JP2013108248A - Bolt installation method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bolt installation method which enables bolt installation without requiring time and labor and enables repeated installation.SOLUTION: A bolt installation method includes: a boring step of boring a bolt hole 26 at a predetermined place of a mortar layer 25 of a structure; an insertion step of inserting a bolt 10A into the bolt hole 26 in a state where a head 17 of the bolt 10A is located at the front; a first movement step of moving a hexagon nut 14 axially forward by rotating a shaft 15 in one direction using an engaging part 19; and a fixing step of pressing a cylindrical member 12 to the head 17 by the nut 14 moved axially forward to elastically deform the cylindrical member 12 radially outward, thereby bringing the outer peripheral surface of the cylindrical member 12 into close contact with the inner peripheral surface of the bolt hole 26 to fix the bolt 10A to the bolt hole 26.

Description

  The present invention relates to a method for installing a bolt that is detachably installed at a predetermined location of a new structure or an existing structure.

  The anchor bolt main body is inserted into an anchor hole drilled in a mortar layer or a concrete frame, and is formed from a driving pin having a spiral protrusion at the tip and an anchor bolt main body formed with a pin hole. There is a pin driving type expansion anchor bolt that expands the open leg portion of the main body and fixes it to an anchor hole by driving a driving pin into the pin (see Patent Document 1). An anchor bolt is formed by drilling an anchor hole at a predetermined position of a structure, inserting an anchor bolt body into the anchor hole, driving a driving pin into a pin hole of the anchor bolt body, and opening the anchor bolt body with the driving pin. The leg portion is expanded radially outward, and the open leg portion is brought into close contact with the inner peripheral surface of the anchor hole.

Japanese Patent Laid-Open No. 2003-27599

  In the pin driving type expansion anchor bolt disclosed in Patent Document 1, after the anchor bolt main body is inserted into the anchor hole, the driving pin is driven into the pin hole, and the open leg portion of the anchor bolt main body is expanded radially outward. For this purpose, a driving pin is required separately from the anchor bolt body, and a driving tool must be prepared separately.In addition, a large force is required to drive the driving pin. Cost. Further, after the driving pin is driven into the pin hole and the anchor bolt main body is fixed to the anchor hole, the anchor bolt main body including the driving pin cannot be removed from the anchor hole and cannot be used repeatedly. This pin-in type expansion anchor bolt may damage the mortar layer or concrete frame due to impact when the pin is driven into the pin hole, and a large noise is generated when the driving pin is driven. May cause noise pollution.

  The objective of this invention is providing the installation method of the volt | bolt which can be installed without requiring an effort and labor, and can be installed repeatedly. Another object of the present invention is to provide a method of installing a bolt that can prevent damage to a structure during installation and can prevent generation of a large noise.

  The premise of the present invention to solve the above problems is a method of installing a bolt that is detachably installed at a predetermined location of a new structure or an existing structure.

  The feature of the present invention based on the above premise is that the bolt extends in the axial direction and has a shaft portion with a screw formed on the outer peripheral surface thereof, and is located at the upper end portion of the shaft portion and extends radially outward of the shaft portion. A head portion that is positioned at the lower end portion of the shaft portion, an engagement portion that is used to rotate the shaft portion in one direction or the opposite direction, and a screw portion that is screwed to the shaft portion. A fastening member that can be moved either in the axial direction forward or axially rearward by rotating in one direction or the opposite direction, and between the head and the fastening member extending in the axial direction Is formed by an elastically deformable cylindrical member that is detachably inserted into the shaft portion and covers the outer peripheral surface of the shaft portion, and the installation method drills a bolt hole at a predetermined position of the structure A process, an insertion process of inserting the bolt into the bolt hole with the head of the bolt at the head, and a shaft using the engaging portion The cylinder member is pressed toward the head of the bolt by the first movement step of rotating the fastening member in one direction to move the fastening member forward in the axial direction of the shaft portion, and the fastening member moved forward in the axial direction. And fixing the bolt to the bolt hole by elastically deforming radially outward, bringing the outer peripheral surface of the cylindrical member into close contact with the inner peripheral surface of the bolt hole.

  As an example of the present invention, the cylindrical member is formed with a plurality of cuts extending in the axial direction with a predetermined distance away from each other in the circumferential direction of the cylindrical member. The bolts are fixed to the bolt holes by elastically deforming outwards and bringing the outer peripheral surfaces of these parts into close contact with the inner peripheral surfaces of the bolt holes.

  As another example of the present invention, on the outer peripheral surface of the cylindrical member, a plurality of convex portions extending in the axial direction and spaced apart by a predetermined dimension in the circumferential direction of the cylindrical member, and a plurality of convex portions positioned between the convex portions and extending in the axial direction. In the fixing process, the cylindrical member is elastically deformed outward in the radial direction, and the convex portions or the convex portions and the concave portions are brought into close contact with the inner peripheral surface of the bolt hole to fix the bolt to the bolt hole. To do.

  As another example of the present invention, on the outer peripheral surface of the cylindrical member, a plurality of convex portions extending in the circumferential direction around the cylindrical member with a predetermined distance in the axial direction and a plurality of convex portions positioned between the convex portions and extending in the circumferential direction. In the fixing process, the cylindrical member is elastically deformed outward in the radial direction, and the convex portions or the convex portions and the concave portions are brought into close contact with the inner peripheral surface of the bolt hole to fix the bolt to the bolt hole. To do.

  As another example of the present invention, a plurality of convex portions are formed on the outer peripheral surface of the cylindrical member so as to be spaced apart from each other by a predetermined dimension in the circumferential direction and the axial direction of the cylindrical member. Then, the bolts are fixed to the bolt holes by elastically deforming them in such a manner that the convex portions or the outer peripheral surfaces of the cylindrical members including the convex portions are brought into close contact with the inner peripheral surfaces of the bolt holes.

  As another example of the present invention, the installation method uses a second moving step of rotating the shaft portion in the opposite direction using the engaging portion to move the fastening member axially rearward of the shaft portion, and the fastening member. A releasing step of elastically deforming the cylindrical member radially inward by moving it axially rearward, releasing the tight contact of the outer peripheral surface of the cylindrical member with the inner peripheral surface of the bolt hole, and releasing the fixation of the bolt to the bolt hole; And removing the bolt from the bolt hole after releasing the bolt from the bolt hole.

  As another example of the present invention, the cylindrical member is a rubber tube made of a rubber material or a cloth-wrapped rubber tube made of a rubber material.

  According to the bolt installation method of the present invention, after a bolt hole is drilled at a predetermined position of the structure, the bolt is inserted into the bolt hole with the head of the bolt at the head, and an impact driver, for example, is inserted into the engagement portion. The attachment is attached, the switch of the driver is turned on, the shaft portion is rotated in one direction, the fastening member is moved forward in the axial direction of the shaft portion, and the cylindrical member is attached to the bolt by the fastening member moved forward in the axial direction. By pressing toward the head, the cylindrical member is elastically deformed radially outward, the outer peripheral surface of the cylindrical member is brought into close contact with the inner peripheral surface of the bolt hole, and the bolt is fixed to the bolt hole. Can be fixed in the bolt hole, and the bolt can be installed in the bolt hole without requiring labor and labor. As for the installation method, it is possible to install the bolt in the bolt hole by fitting the impact driver's attachment to the bolt's engagement part and rotating the bolt's shaft part in one direction by the screwdriver. It is possible to prevent damage to the structure and to prevent the generation of large noises. In this installation method, the cylindrical member is elastically deformed radially outward so that the outer peripheral surface of the cylindrical member is firmly attached to the inner peripheral surface of the bolt hole, and the bolt is firmly fixed to the bolt hole. Therefore, even if a strong external force is applied to the shaft part by attaching another machine tool to the shaft part of the bolt exposed from the bolt hole and performing a predetermined work, the bolt is not fixed to the bolt hole. The predetermined work can be safely performed using the bolt fixed to the bolt hole.

  A plurality of incisions extending in the axial direction with a predetermined distance apart in the circumferential direction are formed in the cylindrical member of the bolt, and in the fixing step, the portions of the cylindrical member extending between the incisions are elastically deformed radially outward, and these portions are The method of installing the outer peripheral surface of the cylinder member in close contact with the inner peripheral surface of the bolt hole is such that when the fastening member presses the cylindrical member toward the head of the bolt, the portion of the cylindrical member extending between the notches is radially outward. Because it is easily and orderly elastically deformed, the part of the cylindrical member is firmly and firmly in contact with the inner peripheral surface of the bolt hole, and most of the outer peripheral surface of the cylindrical member can be in close contact with the inner peripheral surface of the bolt hole, The bolt can be firmly fixed to the bolt hole. The installation method can firmly fix the bolt to the bolt hole, so that a strong external force can be applied to the shaft by attaching another machine tool to the shaft of the bolt exposed from the bolt hole. Even if added, the fixing of the bolt to the bolt hole is not released, and the predetermined work can be safely performed using the bolt fixed to the bolt hole.

  A plurality of convex portions extending in the axial direction and spaced apart by a predetermined dimension in the circumferential direction and a plurality of concave portions extending in the axial direction between the convex portions are formed on the outer peripheral surface of the cylindrical member of the bolt. An installation method in which the members are elastically deformed radially outward, and the convex portions or the convex portions and the concave portions are in close contact with the inner peripheral surface of the bolt hole. When the tightness of the outer peripheral surface is improved and the fastening member presses the cylindrical member toward the head of the bolt, the cylindrical member is elastically deformed radially outward while the convex portions or the convex portions and the concave portions are Since it is firmly and securely adhered to the inner peripheral surface of the bolt hole, the bolt can be firmly fixed to the bolt hole. The installation method can firmly fix the bolt to the bolt hole, so that a strong external force can be applied to the shaft by attaching another machine tool to the shaft of the bolt exposed from the bolt hole. Even if added, the fixing of the bolt to the bolt hole is not released, and the predetermined work can be safely performed using the bolt fixed to the bolt hole.

  A plurality of convex portions extending in the circumferential direction with a predetermined distance apart in the axial direction and a plurality of concave portions extending between the convex portions and extending in the circumferential direction are formed on the outer peripheral surface of the cylindrical member of the bolt. The installation method of elastically deforming the members radially outward and bringing the convex portions or the convex portions and the concave portions into close contact with the inner peripheral surface of the bolt hole is the outer periphery of the cylindrical member with respect to the inner peripheral surface of the bolt hole by the convex portions. When the tightness of the surface is improved and the fastening member presses the tubular member toward the head of the bolt, the tubular member is elastically deformed radially outward while the convex portions or the convex portions and the concave portions are bolts. Since it adheres firmly and reliably to the inner peripheral surface of the hole, the bolt can be firmly fixed to the bolt hole. The installation method can firmly fix the bolt to the bolt hole, so that a strong external force can be applied to the shaft by attaching another machine tool to the shaft of the bolt exposed from the bolt hole. Even if added, the fixing of the bolt to the bolt hole is not released, and the predetermined work can be safely performed using the bolt fixed to the bolt hole.

  A plurality of protrusions arranged at predetermined distances in the circumferential direction and the axial direction are formed on the outer peripheral surface of the cylinder member of the bolt, and in the fixing step, the cylinder member is elastically deformed radially outward, and these protrusions or these In the installation method in which the outer peripheral surface of the cylindrical member including the convex portion is in close contact with the inner peripheral surface of the bolt hole, the degree of adhesion of the outer peripheral surface of the cylindrical member to the inner peripheral surface of the bolt hole is improved by the convex portion, and the fastening member is When the member is pressed toward the head of the bolt, the cylindrical member is elastically deformed radially outward, and the convex portion or the outer peripheral surface of the cylindrical member including the convex portion is strong against the inner peripheral surface of the bolt hole. Since it adheres reliably, a bolt can be firmly fixed to a bolt hole. The installation method can firmly fix the bolt to the bolt hole, so that a strong external force can be applied to the shaft by attaching another machine tool to the shaft of the bolt exposed from the bolt hole. Even if added, the fixing of the bolt to the bolt hole is not released, and the predetermined work can be safely performed using the bolt fixed to the bolt hole.

  Using the engaging part of the bolt, the shaft part is rotated in the opposite direction, the fastening member is moved rearward in the axial direction of the shaft part, the cylindrical member is elastically deformed radially inward, and relative to the inner peripheral surface of the bolt hole. An installation method including releasing a bolt from the bolt hole by releasing the tight contact of the outer peripheral surface of the cylindrical member and extracting the bolt from the bolt hole includes fitting an impact driver attachment to the engaging portion, for example. , The driver switch is turned on, the shaft portion is rotated in the opposite direction, and the fastening member is moved rearward in the axial direction of the shaft portion, thereby elastically deforming the tubular member radially inward, and the outer peripheral surface of the tubular member Since the contact with the inner peripheral surface of the bolt hole is released and the fixing of the bolt to the bolt hole is released, the bolt can be removed from the bolt hole with a simple operation without requiring labor and labor.In the installation method, since the bolt removed from the bolt hole can be installed again in the bolt hole, the bolt can be used repeatedly, and the waste of the bolt can be eliminated.

  The installation method in which the cylinder member of the bolt is a rubber tube made from a rubber-based material or a cloth-wrapped rubber tube made from a rubber-based material should use a rubber tube or cloth-wrapped rubber tube with a large friction coefficient as the cylinder member Thus, when the fastening member presses the cylindrical member toward the head of the bolt, the outer peripheral surface of the cylindrical member elastically deformed radially outward can be firmly and securely adhered to the inner peripheral surface of the bolt hole. Therefore, the bolt can be firmly fixed to the bolt hole. The installation method can firmly fix the bolt to the bolt hole, so that a strong external force can be applied to the shaft by attaching another machine tool to the shaft of the bolt exposed from the bolt hole. Even if added, the fixing of the bolt to the bolt hole is not released, and the predetermined work can be safely performed using the bolt fixed to the bolt hole.

The perspective view of the volt | bolt shown as an example which can be used in the installation method. The exploded perspective view of a volt | bolt. FIG. 2 is an end view taken along line AA in FIG. 1. The figure explaining the installation method (installation procedure) of a volt | bolt. The figure explaining the installation method of the volt | bolt following FIG. The figure explaining the installation method of the volt | bolt following FIG. The figure explaining the installation method of the volt | bolt following FIG. The figure explaining the installation method of the volt | bolt following FIG. The perspective view of the volt | bolt shown as another example which can be used in the installation method. The side view of the volt | bolt shown in the state fixed to the volt | bolt hole. FIG. 11 is an end view taken along line BB in FIG. 10. The perspective view of the volt | bolt shown as another example which can be used in the installation method. The side view of the volt | bolt shown in the state fixed to the volt | bolt hole. FIG. 14 is an end view taken along the line CC of FIG. 13. The perspective view of the volt | bolt shown as another example which can be used in the installation method. The side view of the volt | bolt shown in the state fixed to the volt | bolt hole. The DD line end view of FIG. The perspective view of the volt | bolt shown as another example which can be used in the installation method. The side view of the volt | bolt shown in the state fixed to the volt | bolt hole. The EE line | wire end view of FIG.

  The details of the bolt installation method according to the present invention will be described below with reference to the accompanying drawings such as FIG. 1 which is a perspective view of a bolt 10A that can be used as an example in the installation method. 2 is an exploded perspective view of the bolt 10A, and FIG. 3 is an end view taken along line AA of FIG. 1 and 3, the axial direction is indicated by an arrow X (excluding FIG. 2), the radial direction is indicated by an arrow Y, and the peripheral direction is indicated by an arrow Z.

  In this installation method, the bolt 10A is detachably installed in a bolt hole 26 drilled in a predetermined location of a new structure or an existing structure. The installation method performs each process of a drilling process, an insertion process, a 1st movement process, a fixing process, a 2nd movement process, a cancellation | release process, and a extraction process. In addition, the bolt 10A can be turned over and used by performing the drilling process, the insertion process, the first movement process, and the fixing process after the extraction process.

  A bolt 10A shown as an example that can be used in this installation method is formed of a bolt body 11, an elastically deformable cylinder member 12, washers 13A and 13B, and a hexagon nut 14 (fastening member). In the bolt 10A, both of the washers 13A and 13B can be omitted, or either one of the washers 13A and 13B can be omitted. The bolt body 11 includes a shaft portion 15 formed in a rod shape that is long in the axial direction, a head portion 17 positioned at the upper end portion 16 of the shaft portion 15, and an engagement portion 19 positioned at the lower end portion 18 of the shaft portion 15. Is formed. As shown in FIG. 2, a cylindrical member 12, washers 13 </ b> A and 13 </ b> B, and a hexagon bolt 14 are provided on the shaft portion 15 of the bolt main body 11 from the head 17 side, such as a washer 13 </ b> A → cylinder member 12 → washer 13 </ b> B → hexagon bolt 14. Installed in order.

  The bolt body 11 is made of steel, but may be made of metal such as stainless steel, aluminum alloy, titanium alloy, or resin in addition to steel. A male screw 22 (screw) is formed on the outer peripheral surface 21 of the intermediate portion 20 of the shaft portion 15. The head portion 17 is formed in a regular hexagonal shape and extends outward in the radial direction of the shaft portion 15. In addition, there is no limitation in particular in the shape of the head 17, The head 17 may be shape | molded by the column shape or the other polygonal column shape, and may be shape | molded by flat plate circle shape or flat plate polygonal shape.

  The engaging portion 19 is shaped into a regular hexagon. The engaging portion 19 may be formed with a hexagonal hole with which the hexagonal bar spanner is engaged. The engaging portion 19 engages a socket wrench bit 28 of an impact driver 27 (electric tool) (see FIG. 6) described later and turns on the driver 27 to turn the shaft portion 15 in the counterclockwise direction ( Used when rotating in one direction) or clockwise direction (opposite direction). When the engaging portion 19 is a hexagonal hole, the socket wrench adapter (socket wrench hexagon bar) of the impact driver 27 is fitted, and the shaft portion 15 is set in either the counterclockwise direction or the clockwise direction. Rotate.

  The hexagon nut 14 is detachably screwed to the male screw 22 of the shaft portion 15 of the bolt body 11. The hexagon nut 14 is made of steel, but may be made of metal such as stainless steel, aluminum alloy, titanium alloy, or resin. The hexagon nut 14 moves forward in the axial direction (moves from the side of the engaging portion 19 toward the head 17) by rotating the shaft portion 15 (including the head portion 17) counterclockwise. 15 (including the head 17) is moved in the axial direction by rotating clockwise (including the head 17) (moved from the side of the head 17 toward the engaging portion 19). In addition, although the hexagon nut 14 is used as a fastening member, in addition to the hexagon nut 14, a cylindrical nut and other polygonal column nuts can also be used.

  The cylindrical member 12 is formed in a hollow cylindrical shape that is long in the axial direction, and is disposed between the head 17 (washer 13) A and the hexagon nut 14 (washer 13B) of the bolt body 11. The cylindrical member 12 is inserted into the central portion 20 of the shaft portion 15 of the bolt main body 11 and covers the entire outer peripheral surface 21 of the shaft portion 15. The washer 13 </ b> A is disposed between the head 17 of the bolt main body 11 and the upper end 24 of the cylindrical member 12. The washer 13 </ b> B is disposed between the lower end 23 of the cylindrical member 12 and the hex nut 14. In the bolt 10 </ b> A, about half of the central portion 20 of the shaft portion 15 is exposed from the cylindrical member 12.

  For the cylindrical member 12, a rubber tube made of a rubber material or a cloth-wrapped rubber tube made of a rubber material is used. Examples of rubber materials include natural rubber (NR), isoprene rubber (IR), butadiene rubber (BR), styrene butadiene rubber (SBR), nitrile butadiene rubber (NBR), chloroprene rubber (CR), ethylene propylene rubber (EPM, EPDM), chlorosulfonated polyethylene (CSM), urethane rubber (U), acrylic rubber (ANM, ACM), silicon rubber (Q) and the like can be used.

  FIG. 4 is a diagram for explaining an installation method (installation procedure) of the bolt 10A, and FIG. 5 is a diagram for explaining an installation method of the bolt 10A continued from FIG. FIG. 6 is a diagram for explaining a method for installing the bolt 10A continuing from FIG. 5, and FIG. 7 is a diagram for explaining a method for installing the bolt 10A continuing from FIG. FIG. 8 is a diagram for explaining a method of installing the bolt 10A continuing from FIG.

  As shown in FIG. 1, the hexagon nut 14 is screwed onto the male screw 22 of the shaft portion 15 and the upper end 24 of the tubular member 12 is the washer before the bolt 10A is installed (before fixing) in the bolt hole 26. The washer 13B is in contact with the lower end 23 of the cylindrical member 12 and the nut 14 is in contact with the washer 13B, but the nut 14 is moving the cylindrical member 12 toward the head 17 through 13A. The cylindrical member 12 is not pressed and is not elastically deformed radially outward.

  In the description of the installation procedure of the bolt 10A, it is assumed that the bolt 10A is installed on the mortar layer 25 or the concrete layer 25 (concrete frame) at a predetermined location on the wall of the new structure or the existing structure. The bolt 10A can be installed not only on a wall but also on a pillar, beam, slab, or ceiling. In addition to the mortar layer 25 and the concrete layer 25 at those locations, the bolt 10A is a base material that can be drilled with bolt holes 26. If available, it can also be installed on wood, metal, and plastic that make up the structure.

  First, a cylindrical bolt hole 26 (anchor hole) is drilled in the mortar layer 25 and the concrete layer 25 at the location of the structure where the bolt 10A is to be installed by a vibration drill (power tool) (not shown) (a drilling step). The depth dimension of the bolt hole 26 is not particularly limited, but the bolt 10A in the state of FIG. 1 has a depth dimension equal to or greater than the length plus at least the head 17 and the cylindrical member 12 (the head of the bolt 10A). It is necessary that the depth is greater than or equal to the depth dimension in which the portion 17 and the cylindrical member 12 can be inserted. After drilling the bolt hole 26, the bolt 10A is inserted into the bolt hole 26 (insertion step). As shown in FIG. 4, the washer 13 </ b> A, the cylindrical member 12, the washer 13 </ b> B, and the hexagon nut 14 are inserted into the bolt hole 26 in this order from the head 17 starting with the head 17 of the bolt body 11.

  When the washers 13A and 13B are omitted, the cylindrical member 12 and the hexagon nut 14 are inserted in this order from the head 17. When the washer 13A is omitted, the cylindrical member 12, the washer 13B, and the hexagon nut 14 are inserted in this order from the head 17. When the washer 13B is omitted, the washer 13A, the cylindrical member 12, and the hexagon nut 14 are inserted in this order from the head 17.

  As shown in FIG. 5, the bolt 10 </ b> A inserted into the bolt hole 26 comes into contact with the bottom surface of the bolt hole 26, and the cylindrical member 12 and the hexagon nut 14 (washer 13 </ b> A, 13B) and a part of the intermediate portion 20 of the shaft portion 15 are located inside the bolt hole 26. In the state where the bolt 10 </ b> A is inserted into the bolt hole 26, at least the head portion 17 and the cylindrical member 12 of the bolt 10 </ b> A may be positioned inside the bolt hole 26.

  After the bolt 10A is inserted into the bolt hole 26, as shown in FIG. 6, the socket wrench bit 28 of the impact driver 27 (electric tool) is fitted into the engaging portion 19 of the bolt body 11, and the driver 27 is turned on. Then, the shaft portion 15 of the bolt 10A is rotated in the counterclockwise direction (one direction), and the hexagon nut 14 is moved forward in the axial direction (first moving step). When the shaft portion 15 (including the head portion 17) is rotated in the counterclockwise direction, the hexagonal nut 14 gradually moves forward on the male screw 22 of the shaft portion 15 in the axial direction as indicated by an arrow X1 in FIG. It moves (moves toward the head 17 from the engagement portion 19 side), and the nut 14 gradually presses the tubular member 12 toward the head 17.

  The cylindrical member 12 pressed toward the head 17 of the bolt body 11 by the hexagon nut 14 is elastically deformed radially outward as indicated by an arrow Y1 in FIG. 6, and its outer peripheral surface 29 is radially outward. Swells gradually. When the cylindrical member 12 is elastically deformed, the outer peripheral surface 29 comes into contact with the inner peripheral surface 30 of the bolt hole 26, and in this state, the cylindrical member 12 is fixed to the bolt hole 26, and free rotation of the cylindrical member 12 is restricted. At the same time, the hexagonal nut 14 that is in close contact with the lower end 23 of the cylindrical member 12 is fixed to the cylindrical member 12 via the washer 13B, so that the so-called nut 14 in which the nut 14 rotates together with the shaft portion 15 is eliminated.

  When the shaft portion 15 of the bolt main body 11 is further rotated counterclockwise by the impact driver 27, the hexagon nut 14 further moves the shaft portion 15 forward in the axial direction, and as shown in FIG. Is further elastically deformed radially outward, most of the outer peripheral surface 29 of the cylindrical member 12 is in close contact with the inner peripheral surface 30 of the bolt hole 26, and the bolt 10A is fixed to the bolt hole 26 (fixing step). The hexagon nut 14 is firmly fixed to the cylindrical member 12, and the portion near the upper end 24 and the portion near the lower end 23 of the cylindrical member 12 are firmly attached to the shaft portion 15 of the bolt main body 11. 15 (including the head 17) is fixed.

  The shaft portion 15 of the bolt main body 11 is sufficiently rotated counterclockwise to bring the outer peripheral surface 29 of the cylindrical member 12 into close contact with the inner peripheral surface 30 of the bolt hole 26, and then the socket wrench bit 28 of the impact driver 27 is attached to the bolt main body. As shown in FIG. 8, the bolt 10 </ b> A is firmly fixed to the bolt hole 26 (the mortar layer 25 and the concrete layer 25). In the state of FIG. 8, another machine tool is attached to the shaft portion 15 of the bolt body 11 exposed from the bolt hole 26 to perform a predetermined operation.

  In order to remove the bolt 10A from the bolt hole 26 from the state shown in FIG. 8, the socket wrench bit 28 of the impact driver 27 is again fitted into the engaging portion 19 of the bolt main body 11, the switch of the driver 27 is turned ON, and the bolt main body 11 is turned on. Is rotated in the clockwise direction (opposite direction), and the hexagon nut 14 is moved rearward in the axial direction (second movement step). When the shaft portion 15 (including the head portion 17) is rotated in the clockwise direction, the hexagon nut 14 moves rearward in the axial direction on the male screw 22 of the shaft portion 15 (from the head portion 17 side to the engaging portion 19). And the pressing of the nut 14 against the cylindrical member 12 is gradually released.

  When the pressing of the cylindrical member 12 by the hexagon nut 14 is released, the cylindrical member 12 is elastically deformed radially inward, the outer peripheral surface 29 of the cylindrical member 12 is recessed radially inward, and the inner peripheral surface of the bolt hole 26 The tight contact of the outer peripheral surface 29 of the cylindrical member 12 with respect to 30 is released, the fixing of the bolt 10A to the bolt hole 26 is released (release process), and the state returns to the state of FIG. The socket wrench bit 28 of the impact driver 27 is removed from the engaging portion 19 of the bolt body 11, and the bolt 10A in the state of FIG. 5 is extracted from the bolt hole 26 (extraction process). The removed bolt 10 </ b> A is repeatedly used by performing a drilling process, an insertion process, a first movement process, and a fixing process.

  The inner diameter S1 (see FIG. 3) of the cylindrical member 12 is approximately the same as the outer diameter S2 of the shaft portion 15 (the outer diameter of the male screw 22) of the bolt body 11 or 0.1 to 2 mm than the outer diameter S2 of the shaft portion 15. large. When the inner diameter S1 of the cylindrical member 12 is smaller than the outer diameter S2 of the shaft portion 15, the inner peripheral surface of the cylindrical member 12 is in close contact with the outer peripheral surface of the shaft portion 15, the cylindrical member 12 is fixed to the shaft portion 15, and the first In the moving process, only the shaft portion 15 cannot be rotated separately from the cylindrical member 12. When the inner diameter S1 of the cylindrical member 12 exceeds 2 mm with respect to the outer diameter S2 of the shaft portion 15, in the fixing step of fixing the bolt 10A to the bolt hole 26, a portion near the upper end 24 and a portion near the lower end 23 of the cylindrical member 12 Can not be sufficiently adhered to the outer peripheral surface of the shaft portion 15, the shaft portion 15 is not fixed to the cylindrical member 12, and the shaft portion 15 is inadvertently moved in the installed state of the bolt 10 </ b> A with respect to the bolt hole 26. There is.

  Since the inner diameter S1 of the cylindrical member 12 is in the above range with respect to the outer diameter S2 of the shaft portion 15, the shaft portion 15 of the bolt body 11 can be rotated separately from the cylindrical member 12 in the first movement step, and the bolt In the installation state in which 10A is fixed to the bolt hole 26, the shaft portion 15 can be firmly fixed to the cylindrical member 12, and inadvertent play of the shaft portion 15 can be prevented.

  The outer diameter S3 (see FIG. 3) of the cylindrical member 12 is substantially the same as the inner diameter S4 (see FIG. 4) of the bolt hole 26 or 0.2 to 4 mm smaller than the inner diameter S4 of the bolt hole 26. If the outer diameter S3 of the cylindrical member 12 is larger than the inner diameter S4 of the bolt hole 26, the cylindrical member 12 cannot be inserted into the bolt hole 26 in the insertion process. When the outer diameter S3 of the cylindrical member 12 exceeds 4 mm with respect to the inner diameter S4 of the bolt hole 26, the cylindrical member 12 is pressed by the hexagon nut 14, and the cylindrical member 12 is elastically deformed outward in the radial direction. In the fixing step of fixing to the bolt hole 26, the outer peripheral surface 29 of the cylindrical member 12 may not be sufficiently adhered to the inner peripheral surface 30 of the bolt hole 26, and the bolt 10A is firmly fixed to the bolt hole 26 in the fixing step. Sometimes it cannot be fixed.

  Since the outer diameter S3 of the cylindrical member 12 is within the above range with respect to the inner diameter S4 of the bolt hole 26, the bolt 10A fitted with the cylindrical member 12 can be inserted into the bolt hole 26 in the insertion step, and the bolt 10A can be In the installation state fixed to the hole 26, the outer peripheral surface 29 of the cylindrical member 12 can be sufficiently adhered to the inner peripheral surface 30 of the bolt hole 26, and the bolt 10A can be firmly fixed to the bolt hole 26 in the fixing process. it can.

  The length dimension T1 (see FIG. 2) in the axial direction of the cylindrical member 12 is in the range of 30 to 70%, preferably in the range of 40 to 60% of the length dimension T2 of the shaft portion 15. When the length dimension T1 of the cylindrical member 12 is less than 30% of the length dimension T2 of the shaft portion 15, the outer periphery of the cylindrical member 12 with respect to the inner peripheral surface 30 of the bolt hole 26 in the installed state in which the bolt 10A is fixed to the bolt hole 26. There are cases where the contact area of the surface 29 is small and the bolt 10A cannot be firmly fixed to the bolt hole 26 in the fixing step. When the length dimension T1 of the tubular member 12 exceeds 70% of the length dimension T2 of the shaft portion 15, the hex nut 14 presses the tubular member 12 toward the head 17 depending on the hardness of the tubular member 12. Sometimes, the cylindrical member 12 cannot be elastically deformed radially outward.

  Since the length dimension T1 of the cylindrical member 12 is in the above range with respect to the length dimension T2 of the shaft portion 15, when the cylindrical member 12 is pressed toward the head 17 by the hexagon nut 14, the cylindrical member 12 is The outer circumferential surface 29 of the cylindrical member 12 has a sufficient area with respect to the inner circumferential surface 40 of the bolt hole 26 in the fixing step in which the bolt 10A can be reliably elastically deformed radially outward. The bolt 10A can be firmly fixed to the bolt hole 26.

  The thickness dimension S5 between the inner peripheral surface and the outer peripheral surface 29 of the cylindrical member 12 is in the range of 30 to 150%, preferably in the range of 50 to 100%, of the outer diameter S2 of the shaft portion 15 of the bolt body 11. . If the thickness dimension S5 of the cylindrical member 12 is less than 30% of the outer diameter S2 of the shaft portion 15, the strength of the cylindrical member 12 is reduced, and in the installed state where the bolt 10A is fixed to the bolt hole 26, the shaft portion 15 has another machine. When the work is performed with the appliance attached, the cylinder member 12 may be inadvertently damaged, and the work may not be performed safely. When the thickness dimension S5 of the cylindrical member 12 exceeds 150% of the outer diameter S2 of the shaft portion 14, depending on the hardness of the cylindrical member 12, the hexagon nut 14 presses the cylindrical member 12 toward the head 17 depending on the hardness. In some cases, the cylindrical member 12 cannot be sufficiently elastically deformed radially outward.

  Since the thickness dimension S5 of the cylindrical member 12 is within the above range with respect to the outer diameter S2 of the shaft portion 15, the cylindrical member 12 can be sufficiently elastically deformed radially outward by the hexagon nut 14, and in the fixing step. The bolt 10A can be firmly fixed to the bolt hole 26, and the cylinder member 12 is not inadvertently damaged, and the operation can be performed safely.

  The installation method is to insert the cylindrical member 12 covering the head portion 17 and the shaft portion 15 of the bolt body 11 and the hexagon nut 14 (including washers 13A and 13B) into the bolt hole 26 and then impact the engaging portion 19. The socket wrench bit 28 of the driver 27 is fitted, the switch of the driver 27 is turned on, and the shaft portion 15 is rotated in the counterclockwise direction (one direction). The outer circumferential surface 29 of the cylindrical member 12 is brought into close contact with the inner circumferential surface 30 of the bolt hole 26 by elastically deforming the cylindrical member 12 outwardly in the radial direction thereof, and the bolt 10A is brought into the bolt hole 26. Since it fixes, the volt | bolt 10A can be fixed to the volt | bolt hole 26 by simple operation | work, and it can install without requiring an effort and labor.

  The installation method is such that the socket wrench bit 28 of the impact driver 27 is fitted into the engagement portion 19 of the bolt body 11 and the shaft portion 15 is rotated counterclockwise by the driver 27, whereby the bolt 10 </ b> A is inserted into the bolt hole 26. Since it can be installed, it is possible to prevent damage to the mortar layer 25 and the concrete layer 25 of the structure at the time of installation, and to prevent generation of large noises, which does not cause noise pollution.

  The installation method is to elastically deform the cylindrical member 12 outward in the radial direction so that the outer peripheral surface 29 of the cylindrical member 12 is firmly attached to the inner peripheral surface 30 of the bolt hole 26, and the bolt 10 </ b> A is attached to the bolt hole 26. Even if a strong external force is applied to the shaft portion 15 by attaching another mechanical device to the shaft portion 15 of the bolt main body 11 exposed from the bolt hole 26 and performing a predetermined work, the bolt 15 can be firmly fixed. 10A does not come off from the bolt hole 26, and a predetermined work using the bolt 10A can be performed safely.

  In the installation method, when the shaft portion 15 is rotated in the clockwise direction (opposite direction) using the engaging portion 19, the hexagon nut 14 is moved rearward in the axial direction of the shaft portion 15, and the cylindrical member 12 is thereby changed in diameter. The bolt 10A can be removed from the bolt hole 26 by a simple operation without requiring labor and labor since it can be elastically deformed inward in the direction and the fixing of the bolt 10A to the bolt hole 26 can be released. In the installation method, since the bolt 10A extracted from the bolt hole 26 can be installed again in the bolt hole 26, the bolt 10A can be used repeatedly, and waste of the bolt 10A can be eliminated.

  FIG. 9 is a perspective view of a bolt 10 </ b> B shown as another example that can be used in the installation method, and FIG. 10 is a side view of the bolt 10 </ b> B shown fixed to the bolt hole 26. FIG. 11 is an end view taken along line BB of FIG. In FIG. 9, the axial direction is indicated by an arrow X, the radial direction is indicated by an arrow Y, and the peripheral direction is indicated by an arrow Z.

  The bolt 10B is different from that shown in FIG. 1 in that a plurality of cuts 31 extending in the axial direction are formed in the cylindrical member 12 with a predetermined distance in the circumferential direction. In addition, since the other structure of the volt | bolt 10B is the same as those of the volt | bolt 10A of FIG. 1, while attaching | subjecting the same code | symbol as FIG. 1, and using the description of FIG. Detailed description is omitted.

  The bolt 10B is formed of a bolt body 11, an elastically deformable cylinder member 12, washers 13A and 13B, and a hexagon nut 14 (fastening member). The bolt body 11 includes a shaft portion 15 formed in a rod shape that is long in the axial direction, a head portion 17 positioned at the upper end portion 16 of the shaft portion 15, and an engagement portion 19 positioned at the lower end portion 18 of the shaft portion 15. Is formed. The shaft portion 15, the head portion 17, the engaging portion 19, the washers 13A and 13B, and the hexagon nut 14 are the same as those of the bolt 10A in FIG.

  The cylindrical member 12 is formed into a hollow cylindrical shape that is long in the axial direction, and is disposed between the head portion 17 (washer 13A) and the hexagon nut 14 (washer 13B) of the bolt body 11. The cylindrical member 12 is inserted into the central portion 20 of the shaft portion 15 of the bolt main body 11 and covers the entire outer peripheral surface 21 of the shaft portion 15. As the cylindrical member 12, a rubber tube made of a rubber-based material or a cloth-wrapped rubber tube made of a rubber-based material is used as in FIG. The cylindrical member 12 is formed with a plurality of cuts 31 extending in the axial direction at equal intervals (predetermined dimensions apart) in the circumferential direction. The notch 31 is formed between the upper end 24 and the lower end 23 of the cylindrical member 12, leaving a portion near the upper and lower ends 23, 24 slightly, and penetrates between the inner and outer peripheral surfaces of the cylindrical member 12.

  In the installation method using the bolt 10B, the bolt 10B can be installed in the bolt hole 26 by performing the drilling process, the insertion process, the first movement process, and the fixing process, as in FIG. Since the procedure is the same as that of the bolt 10A in FIG. 1, the installation of the bolt 10B is performed by using FIGS. 4 to 8 and the installation procedure of the bolt 10A described with reference to FIGS. Description of the procedure is omitted. Moreover, the bolt 10B can be removed from the bolt hole 26 by performing a 2nd movement process, a cancellation | release process, and an extraction process similarly to that of FIG. 1, The removal procedure is the same as that of the bolt 10A of FIG. 4 to 8 and the description of the removing procedure of the bolt 10B is omitted by using the removing procedure of the bolt 10A described based on FIGS. 4 to 8.

  As shown in FIG. 9, the hexagon nut 14 is screwed onto the male screw 22 of the shaft portion 15 and the upper end 24 of the cylindrical member 12 is the washer before the bolt 10B is installed in the bolt hole 26 (before fixing). The washer 13B is in contact with the lower end 23 of the cylindrical member 12 and the nut 14 is in contact with the washer 13B, but the nut 14 is moving the cylindrical member 12 toward the head 17 through 13A. The cylindrical member 12 is not pressed and is not elastically deformed radially outward.

  In the installed state in which the bolt 10B is fixed to the bolt hole 26, as shown in FIGS. 10 and 11, the cylindrical member 12 is elastically deformed radially outward, and the outer peripheral surface 29 of the cylindrical member 12 bulges radially outward. Most of the outer peripheral surface 29 is in close contact with the inner peripheral surface 30 of the bolt hole 26, and the cylindrical member 12 is separated in the circumferential direction at the notch 31, and the shaft portion 15 of the bolt main body 11 is exposed at the notch 31. In the installation method, the bolt 10B is firmly fixed to the bolt hole 26 (the mortar layer 25 and the concrete layer 25), and in the state of FIG. 10, another mechanical device is attached to the shaft portion 15 of the bolt body 11 exposed from the bolt hole 26. Install and do the prescribed work.

  In the bolt 10B, as in the bolt 10A in FIG. 1, the inner diameter S1 of the cylindrical member 12 (referring to FIG. 3) is substantially the same as the outer diameter S2 of the shaft portion 15 of the bolt body 11 (the outer diameter of the male screw 22) or the shaft portion. It is 0.1 to 2 mm larger than 15 outer diameter S2. Since the inner diameter S1 of the cylindrical member 12 is in the above range with respect to the outer diameter S2 of the shaft portion 15, the shaft portion 15 of the bolt body 11 can be rotated separately from the cylindrical member 12 in the first movement step, and the bolt In the installation state in which 10B is fixed to the bolt hole 26, the shaft portion 15 is firmly fixed to the cylindrical member 12, and inadvertent play of the shaft portion 15 can be prevented.

  In the bolt 10B, similarly to the bolt 10A in FIG. 1, the outer diameter S3 (supported in FIG. 3) of the cylindrical member 12 is substantially the same as the inner diameter S4 of the bolt hole 26 (supported in FIG. 4) or 0 than the inner diameter S4 of the bolt hole 26. .2-4mm smaller. Since the outer diameter S3 of the cylindrical member 12 is within the above range with respect to the inner diameter S4 of the bolt hole 26, the bolt 10B fitted with the cylindrical member 12 can be inserted into the bolt hole 26 and the bolt 10B can be In the installation state fixed to the hole 26, the outer peripheral surface 29 of the cylindrical member 12 is sufficiently adhered to the inner peripheral surface 30 of the bolt hole 26, and the bolt 10B can be firmly fixed to the bolt hole 26 in the fixing step.

  In the bolt 10B, similarly to the bolt 10A in FIG. 1, the length dimension T1 (indicated by FIG. 2) in the axial direction of the cylindrical member 12 is in the range of 30 to 70% of the length dimension T2 of the shaft portion 15, preferably 40 It is in the range of ˜60%. Since the length dimension T1 of the cylindrical member 12 is in the above range with respect to the length dimension T2 of the shaft portion 15, when the cylindrical member 12 is pressed toward the head 17 by the hexagon nut 14, the cylindrical member 12 is The outer circumferential surface 29 of the tubular member 12 can have a sufficient area with respect to the inner circumferential surface 40 of the bolt hole 26 in the fixing step in which the bolt 10B can be reliably elastically deformed radially outward. The bolt 10B can be firmly fixed to the bolt hole 26.

  In the bolt 10 </ b> B, the thickness dimension S <b> 5 between the inner peripheral surface and the outer peripheral surface 29 of the tubular member 12 is in the range of 30 to 150% of the outer diameter S <b> 2 of the shaft portion 15 of the bolt body 11, as in the bolt 10 </ b> A of FIG. Preferably, it exists in the range of 50 to 100%. Since the thickness dimension S5 of the cylindrical member 12 is within the above range with respect to the outer diameter S2 of the shaft portion 15, the cylindrical member 12 can be sufficiently elastically deformed radially outward by the hexagon nut 14, and in the fixing step. The bolt 10B can be firmly fixed to the bolt hole 26, and the cylindrical member 12 is not inadvertently damaged, and the work using the bolt 10B can be performed safely.

  The installation method using the bolt 10B has the following effects in addition to the effects of using the bolt 10A of FIG. The installation method is such that when the cylindrical member 12 is pressed toward the head 17 of the bolt main body 11 by the hexagon nut 14, the portion of the cylindrical member 12 extending between the notches 31 is easily and orderly elastic in the radial direction. Since it deforms, the portion of the cylindrical member 12 is firmly and firmly in close contact with the inner peripheral surface 30 of the bolt hole 26, and most of the outer peripheral surface 29 of the cylindrical member 12 is in close contact with the inner peripheral surface 30 of the bolt hole 26. The bolt 10B can be firmly fixed to the bolt hole 26.

  FIG. 12 is a perspective view of a bolt 10 </ b> C shown as another example that can be used in the installation method, and FIG. 13 is a side view of the bolt 10 </ b> C shown in a state of being fixed to the bolt hole 26. 14 is an end view taken along the line CC of FIG. In FIG. 12, the axial direction is indicated by an arrow X, the radial direction is indicated by an arrow Y, and the peripheral direction is indicated by an arrow Z.

  The bolt 10C is different from that shown in FIG. 1 in that a plurality of protrusions 32 extending in the axial direction and spaced apart from the outer peripheral surface 29 of the cylindrical member 12 in the circumferential direction are positioned between the protrusions 32 and the shaft. A plurality of recesses 33 extending in the direction are formed. In addition, since the other structure of the volt | bolt 10C is the same as that of the volt | bolt 10A of FIG. 1, while attaching | subjecting the same code | symbol as FIG. 1, and using the description of FIG. Detailed description is omitted.

  The bolt 10 </ b> C is formed of a bolt main body 11, an elastically deformable cylinder member 12, washers 13 </ b> A and 13 </ b> B, and a hexagon nut 14 (fastening member). The bolt body 11 includes a shaft portion 15 formed in a rod shape that is long in the axial direction, a head portion 17 positioned at the upper end portion 16 of the shaft portion 15, and an engagement portion 19 positioned at the lower end portion 18 of the shaft portion 15. Is formed. The shaft portion 15, the head portion 17, the engaging portion 19, the washers 13A and 13B, and the hexagon nut 14 are the same as those of the bolt 10A in FIG.

  The cylindrical member 12 is formed into a hollow cylindrical shape that is long in the axial direction, and is disposed between the head portion 17 (washer 13A) and the hexagon nut 14 (washer 13B) of the bolt body 11. The cylindrical member 12 is inserted into the central portion 20 of the shaft portion 15 of the bolt main body 11 and covers the entire outer peripheral surface 21 of the shaft portion 15. As the cylindrical member 12, a rubber tube made of a rubber-based material or a cloth-wrapped rubber tube made of a rubber-based material is used as in FIG. A plurality of convex portions 32 are formed on the outer peripheral surface 29 of the cylindrical member 12 at regular intervals in the circumferential direction (predetermined dimensions apart) and extending in the axial direction from the upper end 24 toward the lower end 23. A plurality of recesses 33 are formed which are positioned at and extend in the axial direction. The convex portion 32 protrudes outward in the radial direction from the outer peripheral surface 29 of the cylindrical member 12. The convex portion 32 and the concave portion 33 reach the upper end 24 and the lower end 23 of the cylindrical member 12.

  In the installation method using the bolt 10C, the bolt 10C can be installed in the bolt hole 26 by performing the drilling process, the insertion process, the first movement process, and the fixing process, as in FIG. Since the procedure is the same as that of the bolt 10A in FIG. 1, the installation of the bolt 10C is performed by using FIGS. 4 to 8 and the installation procedure of the bolt 10A described based on FIGS. Description of the procedure is omitted. Further, similarly to that of FIG. 1, the bolt 10C can be removed from the bolt hole 26 by performing the second moving step, the releasing step, and the extracting step, and the removing procedure is the same as that of the bolt 10A of FIG. 4 to 8 and the description of the removing procedure of the bolt 10B is omitted by using the removing procedure of the bolt 10A described based on FIGS. 4 to 8.

  As shown in FIG. 12, the hexagon nut 14 is screwed onto the male screw 22 of the shaft portion 15 and the upper end 24 of the tubular member 12 is the washer before the bolt 10C is installed (before fixing) in the bolt hole 26. The washer 13B is in contact with the lower end 23 of the cylindrical member 12 and the nut 14 is in contact with the washer 13B, but the nut 14 is moving the cylindrical member 12 toward the head 17 through 13A. The cylindrical member 12 is not pressed and is not elastically deformed radially outward.

  In the installation state in which the bolt 10C is fixed to the bolt hole 26, as shown in FIGS. 13 and 14, the cylindrical member 12 is elastically deformed radially outward, and the outer peripheral surface 29 of the cylindrical member 12 swells radially outward. Most of the outer peripheral surface 29 of the cylindrical member 12 including the convex portion 32 of the cylindrical member 12 or the concave portion 33 together with the convex portion 32 is firmly adhered to the inner peripheral surface 30 of the bolt hole 26. The bolt 10C is firmly fixed to the bolt hole 26 (the mortar layer 25 or the concrete layer 25). In the state shown in FIG. 13, another mechanical device is attached to the shaft portion 15 of the bolt main body 11 exposed from the bolt hole 26 to obtain a predetermined value. Do work.

  In the bolt 10C, as in the bolt 10A in FIG. 1, the inner diameter S1 of the cylindrical member 12 (with the aid of FIG. 3) is substantially the same as the outer diameter S2 of the shaft portion 15 of the bolt body 11 (the outer diameter of the male screw 22) or the shaft portion. It is 0.1 to 2 mm larger than 15 outer diameter S2. Since the inner diameter S1 of the cylindrical member 12 is in the above range with respect to the outer diameter S2 of the shaft portion 15, the shaft portion 15 of the bolt body 11 can be rotated separately from the cylindrical member 12 in the first movement step, and the bolt In the installation state in which 10C is fixed to the bolt hole 26, the shaft portion 15 is firmly fixed to the cylindrical member 12, and inadvertent play of the shaft portion 15 can be prevented.

  In the bolt 10C, as with the bolt 10A in FIG. 1, the outer diameter S3 (including FIG. 3) including the convex portion 32 of the cylindrical member 12 is substantially the same as the inner diameter S4 (in FIG. 4) of the bolt hole 26 or 0.2-4 mm smaller than the inner diameter S4. Since the outer diameter S3 including the convex portion 32 of the cylindrical member 12 is within the above range with respect to the inner diameter S4 of the bolt hole 26, the bolt 10C fitted with the cylindrical member 12 can be inserted into the bolt hole 26 in the inserting step. In the installation state in which the bolt 10C is fixed to the bolt hole 26, the outer peripheral surface 29 of the cylindrical member 12 including the convex portion 32 of the cylindrical member 12 or the concave portion 33 together with the convex portion 32 is sufficiently adhered to the inner peripheral surface 30 of the bolt hole 26. Then, the bolt 10 </ b> C can be firmly fixed to the bolt hole 26.

  In the bolt 10C, similarly to the bolt 10A in FIG. 1, the length T1 (supported in FIG. 2) in the axial direction of the tubular member 12 is in the range of 30 to 70% of the length T2 of the shaft portion 15, preferably 40 It is in the range of ˜60%. Since the length dimension T1 of the cylindrical member 12 is in the above range with respect to the length dimension T2 of the shaft portion 15, when the cylindrical member 12 is pressed toward the head 17 by the hexagon nut 14, the cylindrical member 12 is The outer circumferential surface 29 of the tubular member 12 has a sufficient area with respect to the inner circumferential surface 40 of the bolt hole 26 in the fixing step in which the bolt 10C can be reliably elastically deformed radially outward. The bolt 10C can be firmly fixed to the bolt hole 26.

  In the bolt 10 </ b> C, the thickness dimension S <b> 5 (excluding the convex portion 32) between the inner peripheral surface and the outer peripheral surface 29 of the cylindrical member 12 is the outer diameter of the shaft portion 15 of the bolt main body 11, as in the bolt 10 </ b> A of FIG. 1. It is in the range of 30 to 150% of S2, preferably in the range of 50 to 100%. Since the thickness dimension S5 of the cylindrical member 12 is within the above range with respect to the outer diameter S2 of the shaft portion 15, the cylindrical member 12 can be sufficiently elastically deformed radially outward by the hexagon nut 14, and in the fixing step. The bolt 10C can be firmly fixed to the bolt hole 26, and the cylindrical member 12 is not inadvertently damaged, and the operation using the bolt 10C can be performed safely.

  The installation method using the bolt 10C has the following effects in addition to the effects of using the bolt 10A of FIG. When the cylindrical member 12 is pressed toward the head portion 17 of the bolt main body 11 by the hexagon nut 14, the cylindrical member 12 is elastically deformed outward in the radial direction together with the convex portions 32 or the convex portions 32. The outer peripheral surface 29 of the cylindrical member 12 including the concave portion 33 not only firmly and securely adheres to the inner peripheral surface 30 of the bolt hole 26, but the outer periphery of the cylindrical member 12 with respect to the inner peripheral surface 30 of the bolt hole 26 by these convex portions 32. The close contact degree of the surface 29 can be improved, and the bolt 10 </ b> C can be firmly fixed to the bolt hole 26.

  FIG. 15 is a perspective view of a bolt 10 </ b> D shown as another example that can be used in the installation method, and FIG. 16 is a side view of the bolt 10 </ b> D shown fixed to the bolt hole 26. FIG. 17 is an end view taken along line DD of FIG. In FIG. 15, the axial direction is indicated by an arrow X, the radial direction is indicated by an arrow Y, and the peripheral direction is indicated by an arrow Z.

  This bolt 10D is different from that shown in FIG. 1 in that a plurality of convex portions 34 extending in the circumferential direction are spaced apart from the outer peripheral surface 29 of the cylindrical member 12 by a predetermined distance in the axial direction, A plurality of recesses 35 extending in the direction are formed. In addition, since the other structure of the volt | bolt 10D is the same as that of the volt | bolt 10A of FIG. 1, while attaching | subjecting the same code | symbol as FIG. 1, and using the description of FIG. Detailed description is omitted.

  The bolt 10D is formed of a bolt body 11, an elastically deformable cylinder member 12, washers 13A and 13B, and a hexagon nut 14 (fastening member). The bolt body 11 includes a shaft portion 15 formed in a rod shape that is long in the axial direction, a head portion 17 positioned at the upper end portion 16 of the shaft portion 15, and an engagement portion 19 positioned at the lower end portion 18 of the shaft portion 15. Is formed. The shaft portion 15, the head portion 17, the engaging portion 19, the washers 13A and 13B, and the hexagon nut 14 are the same as those of the bolt 10A in FIG.

  The cylindrical member 12 is formed into a hollow cylindrical shape that is long in the axial direction, and is disposed between the head portion 17 (washer 13A) and the hexagon nut 14 (washer 13B) of the bolt body 11. The cylindrical member 12 is inserted into the central portion 20 of the shaft portion 15 of the bolt main body 11 and covers the entire outer peripheral surface 21 of the shaft portion 15. As the cylindrical member 12, a rubber tube made of a rubber-based material or a cloth-wrapped rubber tube made of a rubber-based material is used as in FIG. On the outer peripheral surface 29 of the cylindrical member 12, a plurality of convex portions 34 that are spaced apart at equal intervals (predetermined dimensions apart) in the axial direction and that extend in the circumferential direction are formed, and a plurality of convex portions 34 that are located between the convex portions 34 and extend in the circumferential direction are formed. The recess 35 is formed. The convex portion 34 protrudes radially outward from the outer peripheral surface 29 of the cylindrical member 12. The convex portion 34 and the concave portion 35 are formed on the entire circumference in the direction around the cylindrical member 12.

  In the installation method using the bolt 10D, the bolt 10D can be installed in the bolt hole 26 by performing the drilling process, the insertion process, the first movement process, and the fixing process, as in FIG. Since the procedure is the same as that of the bolt 10A in FIG. 1, the installation of the bolt 10D is performed by using FIGS. 4 to 8 and the installation procedure of the bolt 10A described based on FIGS. Description of the procedure is omitted. 1, the bolt 10D can be removed from the bolt hole 26 by performing the second moving step, the releasing step, and the extracting step, and the removing procedure is the same as that of the bolt 10A in FIG. 4 to 8 and the description of the procedure for removing the bolt 10D will be omitted by using the procedure for removing the bolt 10A described with reference to FIGS. 4 to 8.

  As shown in FIG. 15, the hexagon nut 14 is screwed into the male screw 22 of the shaft portion 15 and the upper end 24 of the cylindrical member 12 is the washer before the bolt 10D is installed (before fixing) in the bolt hole 26. The washer 13B is in contact with the lower end 23 of the cylindrical member 12 and the nut 14 is in contact with the washer 13B, but the nut 14 is moving the cylindrical member 12 toward the head 17 through 13A. The cylindrical member 12 is not pressed and is not elastically deformed radially outward.

  In the installed state in which the bolt 10D is fixed to the bolt hole 26, as shown in FIGS. 16 and 17, the cylindrical member 12 is elastically deformed radially outward, and the outer peripheral surface 29 of the cylindrical member 12 swells radially outward. Most of the outer peripheral surface 29 of the cylindrical member 12 including the concave portion 35 together with the convex portion 34 or the convex portion 34 of the cylindrical member 12 is firmly attached to the inner peripheral surface 30 of the bolt hole 26. The bolt 10D is firmly fixed to the bolt hole 26 (the mortar layer 25 or the concrete layer 25), and in the state of FIG. 16, another mechanical device is attached to the shaft portion 15 of the bolt body 11 exposed from the bolt hole 26 to obtain a predetermined Do work.

  In the bolt 10D, as in the bolt 10A in FIG. 1, the inner diameter S1 of the cylindrical member 12 (referring to FIG. 3) is substantially the same as the outer diameter S2 of the shaft portion 15 of the bolt body 11 (the outer diameter of the male screw 22) or the shaft portion. It is 0.1 to 2 mm larger than 15 outer diameter S2. Since the inner diameter S1 of the cylindrical member 12 is in the above range with respect to the outer diameter S2 of the shaft portion 15, the shaft portion 15 of the bolt body 11 can be rotated separately from the cylindrical member 12 in the first movement step, and the bolt In the installation state in which 10D is fixed to the bolt hole 26, the shaft portion 15 is firmly fixed to the cylindrical member 12, and inadvertent play of the shaft portion 15 can be prevented.

  In the bolt 10D, similarly to the bolt 10A of FIG. 1, the outer diameter S3 including the convex portion 34 of the cylindrical member 12 (supported in FIG. 3) is substantially the same as the inner diameter S4 of the bolt hole 26 (supported in FIG. 4). 0.2-4 mm smaller than the inner diameter S4. Since the outer diameter S3 including the convex portion 34 of the cylindrical member 12 is in the above range with respect to the inner diameter S4 of the bolt hole 26, the bolt 10D fitted with the cylindrical member 12 can be inserted into the bolt hole 26 in the inserting step. In the installed state in which the bolt 10D is fixed to the bolt hole 26, the outer peripheral surface 29 of the cylindrical member 12 including the convex portion 34 of the cylindrical member 12 or the concave portion 35 together with the convex portion 34 is sufficiently adhered to the inner peripheral surface 30 of the bolt hole 26. Then, the bolt 10 </ b> D can be firmly fixed to the bolt hole 26.

  In the bolt 10D, similarly to the bolt 10A in FIG. 1, the length dimension T1 in the axial direction of the cylindrical member 12 (supported in FIG. 2) is in the range of 30 to 70% of the length dimension T2 of the shaft portion 15, preferably 40 It is in the range of ˜60%. Since the length dimension T1 of the cylindrical member 12 is in the above range with respect to the length dimension T2 of the shaft portion 15, when the cylindrical member 12 is pressed toward the head 17 by the hexagon nut 14, the cylindrical member 12 is The outer circumferential surface 29 of the cylindrical member 12 can have a sufficient area with respect to the inner circumferential surface 40 of the bolt hole 26 in the fixing step in which the bolt 10D can be reliably elastically deformed radially outward. The bolt 10D can be firmly fixed to the bolt hole 26.

  In the bolt 10D, similarly to the bolt 10A of FIG. 1, the thickness dimension S5 (not including the convex portion 34) between the inner peripheral surface and the outer peripheral surface 29 of the cylindrical member 12 is the outer diameter of the shaft portion 15 of the bolt main body 11. It is in the range of 30 to 150% of S2, preferably in the range of 50 to 100%. Since the thickness dimension S5 of the cylindrical member 12 is within the above range with respect to the outer diameter S2 of the shaft portion 15, the cylindrical member 12 can be sufficiently elastically deformed radially outward by the hexagon nut 14, and in the fixing step. The bolt 10D can be firmly fixed to the bolt hole 26, and the cylindrical member 12 is not inadvertently damaged, and the work using the bolt 10D can be performed safely.

  The installation method using the bolt 10D has the following effects in addition to the effects of using the bolt 10A of FIG. As for the installation method, when the cylindrical member 12 is pressed toward the head 17 of the bolt main body 11 by the hexagon nut 14, the cylindrical member 12 is elastically deformed radially outward together with the convex portions 34 or the convex portions 34. The outer peripheral surface 29 of the cylindrical member 12 including the concave portion 35 not only firmly and securely adheres to the inner peripheral surface 30 of the bolt hole 26, but the outer periphery of the cylindrical member 12 with respect to the inner peripheral surface 30 of the bolt hole 26 by these convex portions 34. The close contact degree of the surface 29 can be improved, and the bolt 10 </ b> D can be firmly fixed to the bolt hole 26.

  FIG. 18 is a perspective view of a bolt 10E shown as another example that can be used in the installation method, and FIG. 19 is a side view of the bolt 10E fixed in the bolt hole 26. FIG. 20 is an end view taken along line EE of FIG. In FIG. 18, the axial direction is indicated by an arrow X, the radial direction is indicated by an arrow Y, and the peripheral direction is indicated by an arrow Z.

  The bolt 10E is different from that shown in FIG. 1 in that a plurality of convex portions 36 are formed on the outer peripheral surface 29 of the cylindrical member 12 so as to be spaced apart from each other by a predetermined dimension in the circumferential direction and the axial direction. In addition, since the other structure of the volt | bolt 10E is the same as that of the volt | bolt 10A of FIG. 1, while attaching | subjecting the same code | symbol as FIG. 1, and using the description of FIG. Detailed description is omitted.

  The bolt 10E is formed of a bolt body 11, an elastically deformable cylinder member 12, washers 13A and 13B, and a hexagon nut 14 (fastening member). The bolt body 11 includes a shaft portion 15 formed in a rod shape that is long in the axial direction, a head portion 17 positioned at the upper end portion 16 of the shaft portion 15, and an engagement portion 19 positioned at the lower end portion 18 of the shaft portion 15. Is formed. The shaft portion 15, the head portion 17, the engaging portion 19, the washers 13A and 13B, and the hexagon nut 14 are the same as those of the bolt 10A in FIG.

  The cylindrical member 12 is formed into a hollow cylindrical shape that is long in the axial direction, and is disposed between the head portion 17 (washer 13A) and the hexagon nut 14 (washer 13B) of the bolt body 11. The cylindrical member 12 is inserted into the central portion 20 of the shaft portion 15 of the bolt main body 11 and covers the entire outer peripheral surface 21 of the shaft portion 15. As the cylindrical member 12, a rubber tube made of a rubber-based material or a cloth-wrapped rubber tube made of a rubber-based material is used as in FIG. A plurality of convex portions 36 are formed on the outer peripheral surface 29 of the cylindrical member 12 so as to be equally spaced apart (predetermined dimensions apart) in the circumferential direction and equally spaced apart (predetermined dimensions away) in the axial direction. The convex portions 36 protrude from the outer peripheral surface 29 of the cylindrical member 12 radially outward.

  In the installation method using the bolt 10E, the bolt 10E can be installed in the bolt hole 26 by performing the drilling process, the insertion process, the first movement process, and the fixing process, as in FIG. Since the procedure is the same as that of the bolt 10A of FIG. 1, the installation of the bolt 10E is performed by using FIGS. 4 to 8 and the installation procedure of the bolt 10A described based on FIGS. Description of the procedure is omitted. Moreover, the bolt 10E can be removed from the bolt hole 26 by performing a 2nd movement process, a cancellation | release process, and an extraction process similarly to that of FIG. 1, The removal procedure is the same as that of the bolt 10A of FIG. 4 to 8 and the description of the procedure for removing the bolt 10E is omitted by using the procedure for removing the bolt 10A described with reference to FIGS. 4 to 8.

  As shown in FIG. 18, the hexagon nut 14 is screwed onto the male screw 22 of the shaft portion 15 and the upper end 24 of the tubular member 12 is the washer before the bolt 10E is installed (before fixing) in the bolt hole 26. The washer 13B is in contact with the lower end 23 of the cylindrical member 12 and the nut 14 is in contact with the washer 13B, but the nut 14 is moving the cylindrical member 12 toward the head 17 through 13A. The cylindrical member 12 is not pressed and is not elastically deformed radially outward.

  In the installed state in which the bolt 10E is fixed to the bolt hole 26, as shown in FIGS. 19 and 20, the cylindrical member 12 is elastically deformed radially outward, and the outer peripheral surface of the cylindrical member 12 swells radially outward. Most of the outer peripheral surface 29 of the cylindrical member 12 including the convex portion 36 or the convex portion 36 of the member 12 is in close contact with the inner peripheral surface 30 of the bolt hole 26. The bolt 10E is firmly fixed to the bolt hole 26 (the mortar layer 25 and the concrete layer 25), and in the state of FIG. 19, another mechanical device is attached to the shaft portion 15 of the bolt main body 11 exposed from the bolt hole 26 to obtain a predetermined Do work.

  In the bolt 10E, similarly to the bolt 10A in FIG. 1, the inner diameter S1 (supported in FIG. 3) of the cylindrical member 12 is substantially the same as the outer diameter S2 of the shaft portion 15 of the bolt body 11 (the outer diameter of the male screw 22) or the shaft portion. It is 0.1 to 2 mm larger than 15 outer diameter S2. Since the inner diameter S1 of the cylindrical member 12 is in the above range with respect to the outer diameter S2 of the shaft portion 15, the shaft portion 15 of the bolt body 11 can be rotated separately from the cylindrical member 12 in the first movement step, and the bolt In the installation state in which 10E is fixed to the bolt hole 26, the shaft portion 15 is firmly fixed to the cylindrical member 12, and inadvertent play of the shaft portion 15 can be prevented.

  In the bolt 10E, similarly to the bolt 10A in FIG. 1, the outer diameter S3 including the convex portion 36 of the cylindrical member 12 (supported in FIG. 3) is substantially the same as the inner diameter S4 of the bolt hole 26 (supported in FIG. 4). 0.2-4 mm smaller than the inner diameter S4. Since the outer diameter S3 including the convex portion 36 of the cylindrical member 12 is in the above range with respect to the inner diameter S4 of the bolt hole 26, the bolt 10E fitted with the cylindrical member 12 can be inserted into the bolt hole 26 in the inserting step. When the bolt 10E is fixed to the bolt hole 26, the convex portion 36 of the cylindrical member 12 or the outer peripheral surface 29 of the cylindrical member 12 including the convex portion 36 is sufficiently in close contact with the inner peripheral surface 30 of the bolt hole 26. 10E can be firmly fixed to the bolt hole 26.

  In the bolt 10E, similarly to the bolt 10A in FIG. 1, the length dimension T1 in the axial direction of the cylindrical member 12 (supported in FIG. 2) is in the range of 30 to 70% of the length dimension T2 of the shaft portion 15, preferably 40 It is in the range of ˜60%. Since the length dimension T1 of the cylindrical member 12 is in the above range with respect to the length dimension T2 of the shaft portion 15, when the cylindrical member 12 is pressed toward the head 17 by the hexagon nut 14, the cylindrical member 12 is The outer circumferential surface 29 of the cylindrical member 12 can have a sufficient area with respect to the inner circumferential surface 40 of the bolt hole 26 in the fixing step in which the bolt 10D can be reliably elastically deformed radially outward. The bolt 10E can be firmly fixed to the bolt hole 26.

  In the bolt 10E, similarly to the bolt 10A in FIG. 1, the thickness dimension S5 (not including the convex portion 36) between the inner peripheral surface and the outer peripheral surface 29 of the cylindrical member 12 is the outer diameter of the shaft portion 15 of the bolt main body 11. It is in the range of 30 to 150% of S2, preferably in the range of 50 to 100%. Since the thickness dimension S5 of the cylindrical member 12 is within the above range with respect to the outer diameter S2 of the shaft portion 15, the cylindrical member 12 can be sufficiently elastically deformed radially outward by the hexagon nut 14, and in the fixing step. The bolt 10E can be firmly fixed to the bolt hole 26, and the cylindrical member 12 is not inadvertently damaged, and the work using the bolt 10E can be performed safely.

  The installation method using the bolt 10E has the following effects in addition to the effects of using the bolt 10A of FIG. The installation method is such that when the cylindrical member 12 is pressed toward the head 17 of the bolt body 11 by the hexagon nut 14, the cylindrical member 12 is elastically deformed radially outward while the convex portions 36 or the convex portions 36 are formed. The outer peripheral surface 29 of the cylindrical member 12 that is included not only firmly and securely adheres to the inner peripheral surface 30 of the bolt hole 26, but also the outer peripheral surface 29 of the cylindrical member 12 with respect to the inner peripheral surface 30 of the bolt hole 26 by these convex portions 36. The degree of close contact can be improved, and the bolt 10E can be firmly fixed to the bolt hole 26.

10A bolt 10B bolt 10C bolt 10D bolt 10E bolt 11 bolt body 12 cylinder member 13A washer 13B washer 14 hex nut (fastening member)
DESCRIPTION OF SYMBOLS 15 Shaft part 16 Upper end part 17 Head 18 Lower end part 19 Engagement part 20 Middle part 21 Outer peripheral surface 22 Male screw (screw)
29 outer peripheral surface 30 inner peripheral surface 31 cut 32 convex portion 33 concave portion 34 convex portion 35 concave portion 36 convex portion

Claims (7)

In the installation method of the bolt that is detachably installed at a predetermined location of a new structure or an existing structure,
The bolt extends in the axial direction and has a shaft formed with a screw on its outer peripheral surface, a head located at the upper end of the shaft and extending radially outward of the shaft, An engaging portion that is located at the lower end portion of the shaft portion and is used to rotate the shaft portion in one direction or the opposite direction; and screwed to the shaft portion so that the shaft portion is in one direction. A fastening member that can move to either the axial front or the axial rear of the shaft by rotating in any of the opposite directions; and the head and the fastening member that extend in the axial direction. An elastically deformable tube member that is disposed between and is detachably inserted into the shaft portion and envelops the outer peripheral surface of the shaft portion,
The installation method uses a drilling step of drilling a bolt hole at a predetermined position of the structure, an insertion step of inserting the bolt into the bolt hole with the head of the bolt at the head, and the engaging portion. Then, the shaft member is rotated in one direction to move the fastening member forward in the axial direction of the shaft portion, and the cylinder member is moved to the head of the bolt by the fastening member moved forward in the axial direction. A fixing step in which the cylindrical member is elastically deformed radially outward by being pressed toward a portion, the outer peripheral surface of the cylindrical member is brought into close contact with the inner peripheral surface of the bolt hole, and the bolt is fixed to the bolt hole; The installation method of the volt | bolt characterized by having.   The cylindrical member is formed with a plurality of cuts extending in the axial direction with a predetermined distance apart in the circumferential direction of the cylindrical member, and in the fixing step, a portion of the cylindrical member extending between the cuts is radially outward. 2. The installation method according to claim 1, wherein the bolt is fixed to the bolt hole by elastically deforming to the outer peripheral surface of the portion and contacting the inner peripheral surface of the bolt hole.   Formed on the outer peripheral surface of the cylindrical member are a plurality of convex portions extending in the axial direction and spaced apart by a predetermined dimension around the cylindrical member, and a plurality of concave portions extending between the convex portions and extending in the axial direction. In the fixing step, the cylindrical member is elastically deformed radially outward, and the convex portions or the convex portions and the concave portions are brought into close contact with the inner peripheral surface of the bolt hole to fix the bolt to the bolt hole. The installation method according to claim 1.   On the outer peripheral surface of the cylindrical member, a plurality of convex portions extending in the circumferential direction around the cylindrical member with a predetermined distance in the axial direction, and a plurality of concave portions extending between the convex portions and extending in the circumferential direction are formed. In the fixing step, the cylindrical member is elastically deformed radially outward, and the convex portions or the convex portions and the concave portions are brought into close contact with the inner peripheral surface of the bolt hole to fix the bolt to the bolt hole. The installation method according to claim 1.   A plurality of protrusions are formed on the outer peripheral surface of the cylindrical member so as to be spaced apart from each other by a predetermined dimension in the circumferential direction and the axial direction of the cylindrical member. In the fixing step, the cylindrical member is elastically deformed radially outward. The installation method according to claim 1, wherein the projecting portion or the outer peripheral surface of the cylindrical member including the projecting portion is brought into close contact with the inner peripheral surface of the bolt hole to fix the bolt to the bolt hole.   The installation method uses the engagement portion to rotate the shaft portion in the opposite direction to move the fastening member axially rearward of the shaft portion; and to move the fastening member rearward in the axial direction. The cylinder member is elastically deformed inward in the radial direction by moving to the release direction, and the tightness of the outer peripheral surface of the cylindrical member to the inner peripheral surface of the bolt hole is released to release the fixing of the bolt to the bolt hole. The installation method according to any one of claims 1 to 5, further comprising: a step of extracting the bolt from the bolt hole after releasing the fixing of the bolt to the bolt hole.   The installation method according to any one of claims 1 to 6, wherein the cylindrical member is a rubber tube made of a rubber-based material or a cloth-wrapped rubber tube made of a rubber-based material.

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