JP2005121041A - Friction damper gear - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a friction damper gear capable of providing a stable frictional force by reducing a fluctuation in a bolt tightening axial force. <P>SOLUTION: A sliding plate 13 joined to the other portion of a structure is installed between two flange plates 11 and 12 joined to one portion of the structure, an opening part 11a is formed in one flange plate 11 at a tightening position, and a pressuring plate 14 having a bolt hole is fitted to the opening part 11a. A disc spring 15 and a nut 16 are stacked on the outer part of the pressuring plate 14, friction materials 18 are installed between the sliding plate 13 and the pressuring plate 14 and between the sliding plate 13 and the other flange plate 12, and the other flange plate 12 and the pressuring plate 14 are tightened with a tightening bolt 19. Since the bolt tightening axial force does not affect the rigidity of the flange plate 11, a fluctuation in the bolt tightening axial force is less and the stable frictional force can be provided. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention is an apparatus used in the field of civil engineering, architecture, or machinery, and is used to connect different members in various structures and machines and suppress vibrations generated in the structures and machines due to frictional forces. Belongs to the technical field of friction damper devices.

  Conventionally, as this type of friction damper device, in order to increase the stability of the frictional force, a device that uses the elasticity of a disc spring to suppress fluctuations in tightening load is known (for example, Patent Documents). 1).

A friction damper device disclosed in Patent Document 1 includes a sliding plate (friction sliding plate) connected to a structural member, a friction material that presses against the sliding plate to generate a frictional force, and tightens the friction material. It consists of a flange plate (a metal plate to be tightened), the above-mentioned slide plate for fastening them, and a bolt and a nut penetrating the flange plate. The slide plate is provided with bolt sliding holes, and the slide plate is inside the nut. Are provided with a disc spring for preventing fluctuations in the tightening axial force of the bolt that occurs when the screw slides, and a pair of washers sandwiching the disc spring.
JP-A-8-193635

  In the friction damper device described in the prior art, fluctuations in the bolt tightening axial force are alleviated by a disc spring disposed inside the nut. The bolts for tightening are directly tightened from the surface of the flange plate. However, when the bolts for tightening are directly tightened from the surface of the flange plate in this way, there is a problem that when the rigidity of the flange plate is large, the tightening axial force of the bolt is affected and easily fluctuates. This tendency is particularly strong when the binding force is strong, for example, the flange plate has a box shape. In addition, when the structure is relatively displaced and the friction damper device is inclined, there is a problem that the bolt tightening axial force is easily affected.

  The present invention has been made in view of such problems, and an object of the present invention is to provide a friction damper device that can reduce fluctuations in bolt tightening axial force and obtain stable frictional force. It is in.

  In order to achieve the above object, a first type of friction damper device according to the present invention is a friction damper device that pressurizes a friction surface by a combination of a tightening bolt and a disc spring, and is connected to a part of a structure. A slip plate connected to the other part of the structure is installed between the flange plates, and an opening is provided at a tightening position in one flange plate and a pressure plate having a bolt hole is fitted in the opening, A disc spring and a nut are stacked on the outside of the pressure plate, friction materials are provided between the slide plate and the pressure plate, and between the slide plate and the other flange plate, and the other flange plate and the pressure plate are tightened with a tightening bolt. It is characterized by that.

  In order to achieve the same object, a second type of friction damper device according to the present invention is a friction damper device that pressurizes a friction surface by a combination of a tightening bolt and a disc spring, and is coupled to a structure portion. A slip plate connected to the other part of the structure is installed between the two flange plates, an opening is provided at the tightening position of one flange plate and a washer is fitted into the opening, and the slide plate and A disc spring, a friction material, a pressure plate having a bolt hole, and a disc spring are sequentially stacked between the washers, and a friction material is provided between the slide plate and the other flange plate. It is characterized by tightening between the pressure plates.

  In order to achieve the same object, a third type of friction damper device according to the present invention is a friction damper device that pressurizes a friction surface by a combination of a tightening bolt and a disc spring, and is coupled to a structure portion. A slip plate connected to the other part of the structure is installed in the box-shaped member in a penetrating state, and an opening is provided on the flange surface of the box-shaped member parallel to the surface of the slip plate and a washer is fitted to the opening. In addition, a disc spring, a pressure plate having a bolt hole, and a friction material are sequentially stacked between the washer and the sliding plate, and the pressure plate and the base plate of the box-shaped member are tightened with a tightening bolt.

  In order to achieve the same object, a fourth type of friction damper device according to the present invention is a friction damper device that pressurizes a friction surface by a combination of a tightening bolt and a disc spring, and is applied to a structure portion. At the other end of the brace material having a hollow cross-section with one end joined, a slip plate with one end joined to the other part of the structure is fitted in, and an opening is provided on the flange surface of the brace material and at the opening. A washer was fitted, and a disc spring, a pressure plate with bolt holes, and a friction material were sequentially stacked between the washer and the sliding plate, and tightened between the pressure plate and the flange surface on the opposite side of the brace material with a tightening bolt. It is characterized by that.

  In the friction damper device according to the first aspect of the present invention, since the bolt tightening axial force does not affect the rigidity of the flange plate, there is little fluctuation in the bolt tightening axial force and a stable friction force can be obtained. . Further, since the displacement in the direction perpendicular to the axis of the tightening bolt is restrained by the flange plate, the pressure plate does not move even when the sliding plate slides. Further, when the device is subjected to bending deformation, the deformation can be absorbed by the clearance between the opening of the flange plate and the pressure plate, so that it is possible to suppress the generation of excessive stress in the device.

  The friction damper device according to the second aspect of the invention has a structure in which the disc spring is housed inside the flange plate in addition to the effect exhibited by the first aspect of the invention, so that it is less susceptible to external damage. There is an effect.

  In the friction damper device according to the third aspect of the present invention, since the bolt tightening axial force does not affect the rigidity of the box-like member, the bolt tightening axial force hardly fluctuates and a stable friction force can be obtained. it can. Moreover, since the friction part is box-shaped, the horizontal rigidity is high, the structure is simple, and the cost is high. Moreover, since the box-shaped cross section has high strength, a relatively large opening can be provided on the flange surface, and by making the opening larger than the diameter of the disc spring, the disc spring can be inspected and replaced from the opening. .

  In the friction damper device according to the fourth aspect of the present invention, since the bolt tightening axial force does not affect the rigidity of the brace material having a hollow cross section, the bolt tightening axial force hardly fluctuates and a stable friction force is obtained. Can be obtained. Further, since the brace material is formed of a square steel pipe, a large buckling prevention effect is obtained with a small amount of steel material, which is economical. Moreover, since the friction part has a hollow cross section, the rigidity is high, simple and economical. Further, since the hollow cross section has high strength, a relatively large opening can be provided on the flange surface, and by making the opening larger than the diameter of the disc spring, the disc spring can be inspected and replaced from the opening.

  Next, specific examples will be given for each type of friction damper device, and the embodiments of the present invention will be described based on them.

  1 is a cross-sectional view showing an example of a first type of friction damper device according to the present invention, FIG. 2 is a plan view of FIG. 1, and FIG. 3 is a cross-sectional view taken along line AA of FIG.

  This first type friction damper device has a structure in which two flange plates 11 and 12 are joined to a structure portion via a joining plate 10 and sandwiched between the two flange plates 11 and 12. And a sliding plate 13 coupled to the other part of the object. The joining plate 10 is sandwiched between two flange plates 11 and 12, and the flange plates 11 and 12 are attached from bolts 10 a passing through these and nuts 10 b with washers, and bolt holes for attaching to the structure portion. 10c on the opposite side. Further, the sliding plate 13 has a bolt hole 13a for coupling to the other part of the structure.

  One flange plate 11 has an opening 11a at a tightening position, and a pressure plate 14 having a bolt hole is fitted in the opening 11a. A disc spring 15 and a nut 16 are stacked on the outside of the pressure plate 14 with a washer 17 interposed therebetween, and friction is caused between the slide plate 13 and the pressure plate 14 and between the slide plate 13 and the other flange plate 12. A material 18 is provided, and the space between the other flange plate 12 and the pressure plate 14 is fastened by a fastening bolt 19. The sliding plate 13 is provided with a long hole 13b for sliding the bolt, and the sliding plate 13 can slide along the longitudinal direction of the long hole 13b.

  Note that a brake lining material or the like is used as the friction material 18, and the friction material 18 on the pressure plate 14 side may be fixed to the pressure plate 14. Further, although stainless steel is usually used for the sliding plate 13, only the surface of the sliding plate 13 may be a stainless steel thin plate.

  The friction damper device having such a configuration is used in a state in which different portions of the structure are joined to the bolt holes 13a of the sliding plate 13 and the bolt holes 10c of the joining plate 10. Then, the sliding plate 13 slides with respect to the other flange plate 12 and the pressure plate 14 in accordance with the deformation of the joined structure, thereby generating a frictional force between both the friction members 18 and heat the vibration energy. Dissipate as. At this time, the disc spring 15 absorbs various deformations due to vibration and suppresses fluctuations in the axial force of the tightening bolt 19. However, since the disc spring 15 presses the pressure plate 14 instead of the flange plate 11, The rigidity of the plate 11 does not affect the tightening axial force of the tightening bolt 19. Further, the displacement in the direction orthogonal to the axis of the fastening bolt 19 is restrained by the flange plate 11, and the pressure plate 14 does not move even when the sliding plate 13 slides.

  4 is a cross-sectional view showing an example of a second type friction damper device according to the present invention, FIG. 5 is a plan view of FIG. 4, and FIG. 6 is a cross-sectional view taken along line AA of FIG.

  This second type of friction damper device is structured such that it is sandwiched between two flange plates 21 and 22 joined to a structure portion via a joining plate 20 and the two flange plates 21 and 22. And a sliding plate 23 coupled to the other part of the object. The joining plate 20 is sandwiched between two flange plates 21 and 22, and the flange plates 21 and 22 are attached from bolts 20 a passing through them and nuts 20 b with washers, and bolt holes for attaching to the structure portion. 20c on the opposite side. Further, the sliding plate 23 has a bolt hole 23a for coupling to the other part of the structure.

  One flange plate 21 has an opening 21a at a tightening position, and a washer 24 is fitted into the opening 21a. A friction material 25, a pressure plate 26 having a bolt hole, and a disc spring 27 are sequentially stacked between the slide plate 23 and its washer 24, and the friction material 25 is also provided between the slide plate 23 and the other flange plate 22. The flange plate 22 is clamped between the other flange plate 22 and the pressure plate 26 by a tightening bolt 29 using a nut 28 from the outside of the washer 24. Further, the sliding plate 23 is provided with a long hole 23b for sliding the bolt, and the sliding plate 23 can slide along the longitudinal direction of the long hole 23b.

  Note that a brake lining material or the like is used for the friction material 25, and the friction material 25 on the pressure plate 26 side may be fixed to the pressure plate 26. Further, although stainless steel is usually used for the sliding plate 23, only the surface of the sliding plate 23 may be a thin stainless plate.

  The friction damper device having such a configuration is used in a state where different parts of the structure are joined to the bolt holes 23a of the sliding plate 23 and the bolt holes 20c of the joining plate 20. Then, the sliding plate 23 slides with respect to the other flange plate 22 and the pressure plate 26 in accordance with the deformation of the joined structure, thereby generating a frictional force between the two friction members 25 and generating vibration energy. Dissipate as. At this time, the disc spring 27 absorbs various deformations due to vibration and suppresses fluctuations in the axial force of the tightening bolt 28. However, the washer 24 is cut off from the flange plate 21, and the disc spring 27 is added. Since the pressure plate 26 is pushed, the rigidity of the flange plate 22 does not affect the tightening axial force of the tightening bolt 28. The displacement in the direction perpendicular to the axis of the tightening bolt 28 is restrained by the flange plate 21, and the pressure plate 26 does not move even when the sliding plate 23 slides. In addition, this type of friction damper device has a structure in which the disc spring 27 is housed inside the flange plates 21 and 22 and thus is not easily damaged from the outside.

  7 is a cross-sectional view showing an example of a third type of friction damper device according to the present invention, FIG. 8 is a cross-sectional view taken along the line A-A in FIG. 7, and FIG. FIG.

  This third type friction damper device includes a box-shaped member 30 coupled to a structure portion, and two sliding plates 31 and 32 that are coupled at one end to the other portion of the structure and pass through the box-shaped member. It has.

  The box-shaped member 30 is a tunnel-type member in which an inverted U-shaped flange plate 34 is erected on the upper side of the base plate 33, and the base plate 33 is attached to the anchor plate 36 fixed to the structure by the stud 35 with bolts 37. By attaching, the box-shaped member 30 is coupled to the structure portion.

  On the other hand, the two sliding plates 31 and 32 are attached to a joining plate 39 erected on a base plate 38 fixed to the structure with anchor bolts (not shown). That is, the sliding plates 31 and 32 are rotatably attached to the joining plate 39 by having one end side thereof positioned on both sides of the joining plate 39 and the hinge pins 40 passing through them. The sliding plates 31 and 32 coupled to the other parts of the structure in this way penetrate the box-shaped member 30 and are bridged at the other end side by a connecting pin 41.

  The box-shaped member 30 is provided with an opening 34 b in a flange surface 34 a parallel to the surfaces of the sliding plates 31 and 32, and a washer 42 is fitted into the opening 34 b, so that the washer 42 and the sliding plate 31 A disc spring 43, a pressure plate 44 having a bolt hole, and a friction material 45 are sequentially stacked, and a friction material 45, an intermediate plate 46 having a bolt hole, and a friction material 45 are sequentially placed between the slide plates 31 and 32. The friction material 45 is installed between the sliding plate 32 and the base plate 33, and the base plate 33 and the pressure plate 44 are tightened from the outside of the washer 42 by the tightening bolts 48 using the double nut 47.

  Note that a brake lining material or the like is used as the friction material 45, and the friction material 45 may be fixed to the pressure plate 44 or the intermediate plate 46. Further, although stainless steel is usually used for the sliding plates 31 and 32, only the surfaces of the sliding plates 31 and 32 may be stainless thin plates 31a and 32a as shown in FIG.

  The friction damper device having such a configuration is used in a state in which the base plate 33 of the box-shaped member 30 and one end side of the slide plates 31 and 32 are joined to different parts of the structure as described above. Then, the sliding plate 31 slides with respect to the intermediate plate 46 and the pressure plate 44 along with the deformation of the joined structure, and the sliding plate 32 slides with respect to the base plate 33 and the intermediate plate 46, whereby both friction materials 45 are obtained. A frictional force is generated between them and the vibration energy is dissipated as heat. At this time, the disc spring 43 absorbs various deformations due to vibration and suppresses fluctuations in the axial force of the tightening bolt 48, but the washer 42 is cut off from the flange plate 34 and the disc spring 43 is added. Since the pressure plate 44 is pressed, the rigidity of the box-shaped member 30 does not affect the tightening axial force of the tightening bolt 48. The displacement in the direction perpendicular to the axis of the tightening bolt 48 is restrained by the flange plate 34 via the washer 42, and the pressure plate 44 does not move even when the slide plates 31 and 32 slide. Since this type of friction damper device has a structure in which the disc spring 43 is housed inside the flange plate 34, it is not easily damaged from the outside.

  10 is a side view showing the fourth type friction damper device according to the present invention in use, FIG. 11 is an enlarged view of the main part of FIG. 10, FIG. 12 is a cross-sectional view taken along the line AA of FIG. It is a BB arrow line view of 12.

  As shown in FIG. 10, the fourth type friction damper device includes a brace material 50 having a hollow cross section that joins one end to a structure portion, and a slide plate 51 that joins one end to the other portion of the structure. In the example shown in the figure, the intersections between the pillars P and the beams S are connected.

  The brace material 50 is formed of a square steel pipe, and an end plate 52 and a joining plate 53 are provided on one end side thereof, and the joining plate 53 is attached to a gusset plate 54 of a structure with a hinge pin 55. On the other hand, the sliding plate 51 is installed in a state in which one end side thereof is fixed to the gusset plate 56 at a position facing the gusset plate 54 by a bolt 57 and the other end side is fitted to the end portion on the other end side of the brace material 50. .

  The brace member 50 is provided with an opening 50 b in one flange surface 50 a at the other end, and a washer 58 is fitted into the opening 50 b, and between the washer 58 and the sliding plate 51. A disc spring 59, a pressure plate 60 having a bolt hole, and a friction material 61 are sequentially stacked, and a friction material 61 and a pressure plate 62 having a bolt hole are also installed between the sliding plate 51 and the flange surface 50c to provide a washer. A nut 63 is used from the outside of 58 to fasten between the pressure plate 61 and the slide plate 51 and between the flange surface 50 c on the opposite side of the brace material 50 and the pressure plate 44 by the fastening bolt 64. Further, the sliding plate 51 is provided with a long hole 51a for sliding the bolt, and the sliding plate 51 can slide along the longitudinal direction of the long hole 51a.

  Note that a brake lining material or the like is used as the friction material 61, and the friction material 61 may be fixed to the pressure plates 60 and 62. Further, although stainless steel is usually used for the sliding plate 51, only the surface of the sliding plate 51 may be a thin stainless plate.

  In the friction damper device having such a configuration, as described above, one end side of the brace member 50 is attached to the gusset plate 54 and one end side of the sliding plate 51 is attached to the gusset plate 56, so that the intersection between the column P and the beam S is provided. It is used in the state where it is installed with a tie. Then, the sliding plate 51 slides with respect to the pressure plates 60 and 62 as the pillar P and the beam S are deformed, so that a frictional force is generated between both the friction members 61 and the vibration energy is dissipated as heat. . At this time, the disc spring 59 absorbs various deformations due to vibration and suppresses fluctuations in the axial force of the clamping bolt 64, but the washer 58 is cut off from the flange surface 50 a of the brace material 50, and Since the spring 59 presses the pressure plate 60, the rigidity of the brace material 50 does not affect the tightening axial force of the tightening bolt 64. The displacement in the direction perpendicular to the axis of the tightening bolt 64 is restrained by the flange surface 50a of the brace member 50 via the washer 58, and the pressure plates 60 and 62 do not move even when the sliding plate 51 slides. Since this type of friction damper device has a structure in which the disc spring 59 is housed inside the brace member 50, it is not easily damaged from the outside.

  The embodiment of the present invention has been described in detail above, but the friction damper device according to the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention. It is natural that it is possible.

  For example, in the third type friction damper device, the number of sliding plates may be one or three or more. In this case, it goes without saying that the friction material and the intermediate plate are appropriately arranged according to the number of the sliding plates.

  In the fourth type of friction damper device, an example was given in which a square steel pipe was used as the brace material and the cross section was box-shaped. However, it can also be applied to a brace material having a circular hollow cross section. It is.

It is sectional drawing which shows an example of the 1st type friction damper apparatus which concerns on this invention. It is a top view of FIG. It is AA sectional drawing of FIG. It is sectional drawing which shows an example of the 2nd type friction damper apparatus which concerns on this invention. FIG. 5 is a plan view of FIG. 4. It is AA sectional drawing of FIG. It is sectional drawing which shows an example of the 3rd type friction damper apparatus which concerns on this invention. It is AA sectional drawing of FIG. FIG. 9 is a half cross-sectional view in the direction of arrows BB in FIG. 8. It is a side view which shows the 4th type friction damper apparatus which concerns on this invention in use condition. It is a principal part enlarged view of FIG. It is AA sectional drawing of FIG. It is a BB arrow line view of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Joining plate 10a Bolt 10b Nut 10c Bolt hole 11 Flange plate 11a Opening part 12 Flange plate 13 Sliding plate 13a Bolt hole 13b Long hole 14 Pressure plate 15 Disc spring 16 Nut 17 Washer 18 Friction material 19 Tightening bolt 20 Joining plate 20a Bolt 20b Nut 20c Bolt hole 21 Flange plate 21a Opening 22 Flange plate 23 Sliding plate 23a Bolt hole 23b Long hole 24 Washer 25 Friction material 26 Pressure plate 27 Belleville spring 28 Nut 29 Tightening bolt 30 Box-shaped members 31, 32 Sliding plates 31a, 32a Stainless steel thin plate 33 Base plate 34 Flange plate 34a Flange surface 34b Opening 35 Stud 36 Anchor plate 37 Bolt 38 Base plate 39 Joining plate G 40 Hinge pin 41 Connecting pin 42 Washer 43 Belleville spring 44 Pressure plate 45 Friction material 46 Intermediate plate 48 Tightening bolt 50 Brace material 50a Flange surface 50b Opening 50c Flange surface 51 Sliding plate 51a Long hole 52 End plate 53 Joint plate 54 Gusset plate 55 Hinge pin 56 Gusset plate 57 Bolt 58 Washer 59 Belleville spring 60 Pressure plate 61 Friction material 62 Pressure plate 63 Nut 64 Tightening bolt

Claims (4)

  A friction damper device that pressurizes a friction surface by a combination of a clamping bolt and a disc spring, and a slip plate coupled to the other part of the structure is installed between two flange plates coupled to the structure part. An opening is provided at a tightening position in one flange plate, and a pressure plate having a bolt hole is fitted in the opening, and a disc spring and a nut are stacked on the outside of the pressure plate, and between the slide plate and the pressure plate, and the slide plate A friction damper device, wherein a friction material is provided between the flange plate and the other flange plate, and the other flange plate and the pressure plate are tightened with a fastening bolt.   A friction damper device that pressurizes a friction surface by a combination of a clamping bolt and a disc spring, and a slip plate coupled to the other part of the structure is installed between two flange plates coupled to the structure part. An opening is provided at the tightening position of one flange plate and a washer is fitted into the opening, and a disc spring, a friction material, a pressure plate having a bolt hole, and a disc spring are sequentially stacked between the slide plate and the washer. A friction damper device, characterized in that a friction material is provided between the sliding plate and the other flange plate, and the other flange plate and the pressure plate are tightened with a fastening bolt.   A friction damper device that pressurizes a friction surface by a combination of a clamping bolt and a disc spring, and a slip plate coupled to the other part of the structure is installed in a box-like member coupled to the structure part in a penetrating state. An opening is provided on the flange surface of the box-shaped member parallel to the surface of the plate, and a washer is fitted into the opening, and a disc spring, a pressure plate having a bolt hole, and a friction material are sequentially stacked between the washer and the sliding plate. A friction damper device, wherein the friction damper device is provided and tightened between a pressure plate and a base plate of a box-shaped member with a tightening bolt. A friction damper device that pressurizes a friction surface by a combination of a tightening bolt and a disc spring, and has one end at the other end of the brace material having a hollow section in which one end is coupled to the structure portion and the other portion at the structure. Install the combined slip plate in an inserted state, provide an opening in the flange surface of the brace material and fit a washer in the opening, a disc spring between the washer and the slide plate, a pressure plate having a bolt hole, and a friction material The friction damper device is characterized in that a plurality of layers are provided one after another and tightened between the pressure plate and the flange surface on the opposite side of the brace material with a tightening bolt.

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