JP2008069949A - Repair device - Google Patents

Abstract

The present invention relates to a repair device that presses a repair member against an inner peripheral wall of a branch pipe branched from a main pipe and lines the inner peripheral wall with the repair member, and the inner peripheral wall of the branch pipe is lined with a repair member without any trouble. A repair device capable of repairing is provided.
A main body is disposed in a main pipe and supplied with pressurized fluid. A repair member is held on an outer peripheral surface of the main body, and the main body is supplied with pressurized fluid. The advancing part 12 that advances from the side toward the branch pipe 91 and presses the repair member 50 against the inner peripheral wall 91a of the branch pipe 91 in the branch pipe 91, and the respective one ends 141 are connected to different positions of the advancing part 12. The other end 142 is connected to one place of the main body part 11 directly or through the intermediate member 15, and supports the advancing part 12 that has advanced into the branch pipe 91 in a tensioned state. The striate body 14 is provided.
[Selection] Figure 3

Description

  The present invention relates to a repair device that presses a repair member against an inner peripheral wall of a branch pipe branched from a main pipe and lines the inner peripheral wall with the repair member.

  Some underground pipes such as sewer pipes are damaged by aging, land subsidence, or fluctuations in ground pressure. When repairing damaged pipes, non-open cutting is preferable from the viewpoint of reducing repair costs and minimizing traffic problems.

  By the way, there is a branch pipe that branches off from the main pipe. As an example of this branch pipe, a sewer pipe will be described as an example. An attachment pipe attached to a sewer main that connects a public sewer and the sewer main may be mentioned. Some of the mounting pipes are damaged due to aging, and some of the mounting pipes are damaged due to land subsidence or ground pressure fluctuation.

Therefore, various techniques for pressing a repair member against the inner peripheral wall of the branch pipe and lining the inner peripheral wall with the repair member have been proposed as non-open-cut repair methods for branch pipes such as attachment pipes (see, for example, Patent Document 1). . Patent Document 1 discloses a non-opening repair method using a repair device that has a convex portion that is disposed in a main pipe and protrudes from a main body portion to which a pressurized fluid is supplied and whose outer peripheral surface is formed of rubber. That is, in the non-open repair method disclosed here, a convex portion having a repair member wound around its outer peripheral surface is disposed in the branch pipe, and rubber is stretched and expanded in the branch pipe by the pressurized fluid supplied to the main body. The repair member is pressed against the inner peripheral wall of the branch pipe by making the diameter. A plate-like frame is provided at the tip portion in the convex portion disclosed in Patent Document 1, and the frame and the main body are connected by four chains. The convex portion arranged in the branch pipe is supported by these four chains in a tensioned state. The four chains are grouped two by two and are connected to two portions of the main body portion, that is, a portion upstream of the main pipe and a portion downstream of the main pipe.
Japanese Patent Laying-Open No. 2005-90546 (FIG. 6)

  However, the branching direction of the branch pipe branched from the main pipe is inclined to the upstream side or the downstream side of the main pipe, or the opening of the branch pipe in the main pipe is provided at various positions in the circumferential direction of the main pipe. It has been. For this reason, in the repair apparatus described in patent document 1, it cannot respond | correspond firmly especially to the branch direction of a branch pipe, and a convex part cannot be correctly arrange | positioned in a branch pipe depending on the branch direction of a branch pipe. There is a case. Further, when a repair member impregnated with a resin that is cured by heating is impregnated, the repair device described in Patent Document 1 is not provided with a special heating means. Even if it tries to heat resin with a pressurized fluid, it will fall into insufficient heating, and it will take a long time for the resin to harden, and repair work will be prolonged. Furthermore, in the repair device described in Patent Document 1, the chain is connected to a plate-shaped frame, and when the pressurized fluid is supplied, the rubber that forms the outer peripheral surface of the convex portion extends. Easy to tilt. If the pressurized fluid is further supplied in a state where the frame is inclined, the rubber may be locally pulled and the rubber may be broken.

  An object of this invention is to provide the repair apparatus which can back the inner peripheral wall of the branch pipe branched from the main pipe with the repair member without the malfunction in view of the said situation.

In order to achieve the above object, a first repair device of the present invention is a repair device in which a repair member is pressed against an inner peripheral wall of a branch pipe branched from a main pipe and the inner peripheral wall is lined with the repair member.
A main body disposed in the main pipe and supplied with pressurized fluid;
The repair member is held on the outer peripheral surface, and the pressurized fluid is supplied to the main body to advance from the main pipe side toward the branch pipe, and the repair member is placed inside the branch pipe in the branch pipe. An advancing part that presses against the peripheral wall,
Each one end is connected to a different position of the advancing portion, and the other end with respect to the one end is connected to one place of the main body portion directly or through an intermediate member, and the advancing portion that has advanced into the branch pipe is strained It is characterized by comprising three or more filaments having the same length and being supported in a state.

  The repair member referred to here may be a cylindrical body, or may be a member obtained by rolling a sheet into a cylindrical shape so that the end portion wraps, and further, the peripheral length of the inner peripheral wall of the branch pipe The sheet body may be shorter (hereinafter the same).

  According to the first repair device of the present invention, since the three or more striates are connected to one place of the main body, even if the branching direction of the branch pipe is inclined to the upstream side of the main pipe Even if it is inclined to the downstream side or the opening of the branch pipe in the main pipe is provided at various positions in the circumferential direction of the main pipe, it is easy to accurately place the advancing portion in the branch pipe.

  In addition, it is more preferable that the intermediate member is swingable by 360 ° with respect to the main body.

In order to achieve the above object, the second repair device of the present invention presses a repair member impregnated with a resin whose hardening is accelerated by heating against the inner peripheral wall of a branch pipe branched from the main pipe. In the repair device that is lined by the repair member,
A main body disposed in the main pipe and supplied with pressurized fluid;
A rubber forming an outer peripheral surface, a base disposed inside the rubber and extending in the tube axis direction of the branch pipe, and a heating element disposed between the rubber and the base, the repair member on the outer peripheral surface When the pressurized fluid is supplied to the main body, the rubber advances from the main pipe side toward the branch pipe, and the rubber extends in the branch pipe by the pressurized fluid supplied to the main body. By expanding the diameter and pressing the repair member against the inner peripheral wall of the branch pipe, and an advancing portion that promotes the curing of the resin by heat from the heating element,
Each end is connected to a different position of the base in the advance direction of the advancement portion, and the other end of the base is connected to the main body, and the advancement portion that has advanced into the branch pipe is in tension. And three or more filaments that are equal in length to each other.

  According to the second repair device of the present invention, the heating element can be arranged by providing the base part extending in the tube axis direction of the branch pipe in the advance part, and the extension part is arranged by the heat generator. It is possible to heat the entire outer peripheral surface. As a result, the resin is reliably cured in a short time, and the repair work is shortened. In addition, one end of each of the three or more striated bodies is connected to the leading end portion of the base in the advancing direction in spite of providing the base extending in the tube axis direction of the branch pipe. Therefore, compared with the case where the base is connected to the rear end portion of the advancing portion in the advancing direction, the base is less likely to be tilted, and the rubber is pulled locally and the rubber is broken. Is done.

A third repair device of the present invention for achieving the above object is a repair device in which a repair member is pressed against the inner peripheral wall of a branch pipe branched from the main pipe and the inner peripheral wall is lined with the repair member.
A main body disposed in the main pipe and supplied with pressurized fluid;
A rubber that forms an outer peripheral surface, and a cylindrical frame that is disposed inside the rubber and extends in the tube axis direction of the branch pipe, holds the repair member on the outer peripheral surface, and pressurized fluid is supplied to the main body portion. By being supplied, it advances from the main pipe side toward the branch pipe, and the rubber is expanded and expanded in diameter by the pressurized fluid supplied to the main body in the branch pipe, so that the repair member is moved to the branch pipe. An advancing part that presses against the inner peripheral wall of the pipe;
One end of each of the advancing portions is connected to a different position on the radially outer side of the cylindrical frame with respect to the cylindrical frame, and the other end with respect to the one end is connected to the main body portion to advance into the branch pipe. It is characterized by comprising three or more striate bodies having the same length to support the advancing portion in a tensioned state.

  If the center of the force applied by supplying pressurized fluid to the advancing portion is inside the connection point of each of the three or more filaments with the advancing portion, the cylindrical frame is inclined. No, the more these connection points are on the outside, the more the cylindrical frame is prevented from tilting. In the third repair device of the present invention, one end of each of the three or more filaments is connected on the radially outer side of the cylindrical frame with respect to the cylindrical frame. Compared with the case where one end of each strip is connected to the cylindrical frame, the cylindrical frame is less likely to tilt. As a result, even when a pressurized fluid is supplied, the rubber is locally pulled and the rubber is ruptured.

  According to the repair device of the present invention, the inner peripheral wall of the branch pipe branched from the main pipe can be backed by the repair member without any trouble.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a perspective view of a packer which is an embodiment of the repair device of the present invention.

  The packer 1 shown in FIG. 1 is a repairing device used when repairing a sewer pipe by non-open cutting. That is, the repair member is pressed against both the inner peripheral wall of the sewer main pipe and the inner peripheral wall of the mounting pipe connected to the hole opened in the inner peripheral wall of the sewer main pipe, and the inner peripheral wall of the sewer main pipe and the inner peripheral wall of the mounting pipe are integrally backed by the repair member. This is a repair device. The packer 1 has a main body part 11 and an advancing part 12. The main body 11 is disposed in the sewer main and is supplied with pressurized air, and the outer periphery thereof is hermetically covered with a rubber 13. The advancing section 12 advances from the sewer main side toward the attachment pipe by supplying pressurized air to the main body section 11, and the pressurized air is discharged from the main body section 11 to discharge from the attachment pipe to the sewer main pipe. It is retracted toward the side and stored in the main body 11. FIG. 1 shows a state in which the advancing unit 12 is stored in the main body unit 11. Further, the front end surface 12a and the outer peripheral surface 12b in the advancing direction in the advancing portion 12 are formed by a rubber 13 'integrated with the rubber 13 covering the outer periphery of the main body portion. A fixing bolt 120 and a fixing plate 121 for fixing the rubber 13 ′ are disposed at the front end side of the advancing portion 12 in the advancing direction. Further, on the left side of FIG. 1, power is supplied to electrical components such as a supply hose 111 that supplies pressurized air to the main body 11, a discharge hose 112 that discharges pressurized air from the main body 11, and a planar heater described later. An electrical cable 113 for supplying is shown. Further, on the right side of FIG. 1, a rotating device 2 for rotating the packer 1 in the circumferential direction of the sewer main is shown.

  FIG. 2 is a perspective view showing a state where the advancement portion of the packer shown in FIG. 1 has advanced.

  When pressurized air is supplied to the main body 11, the rubber 13 extends and expands in the radial direction of the sewer main. Further, the advancing portion 12 advances from the state stored in the main body portion 11 shown in FIG. 1, and the rubber 13 'forming the outer peripheral surface of the advancing portion 12 expands in the radial direction of the mounting tube. FIG. 2 shows a state in which the diameters of the rubbers 13 and 13 'are expanded. FIG. 1 referred to above shows a state where the diameters of the rubbers 13 and 13 ′ are reduced.

  Although not shown in FIGS. 1 and 2, the packer 1 and the rotating device 2 are provided with wheels and a sled member so that the inside of the sewer main can be smoothly moved.

  Next, the internal structure of the packer 1 shown in FIG. 2 will be described.

  FIG. 3 is a diagram schematically showing the internal structure of the packer shown in FIG.

  First, the repair member will be described before the internal structure of the packer 1 is described. FIG. 3 shows the repair member 50. The repair member 50 is made by impregnating a glass mat with an epoxy resin or the like that is cured by heating. The repair member 50 shown in FIG. 3 has a cylindrical part 51 and a flange part 52 provided at one end of the cylindrical part 51. The tubular portion 51 serves to line the inner peripheral wall 91a of the attachment tube 91. The repair member 50 also has a cylindrical main pipe repair portion 53 connected to the flange portion 52. The flange portion 52 and the main pipe repair portion 53 line the inner peripheral wall 90a of the sewer main pipe 90. The flange portion 52 is a mounting hole in the sewer main pipe inner peripheral wall 90a to which the mounting pipe 91 is attached. It corresponds to the portion lining the periphery of 90b. The repair member 50 is formed by integrally forming the cylindrical portion 51, the flange portion 52, and the main pipe repair portion 53.

  Now, the internal structure of the packer 1 will be described. FIG. 3 shows a main body frame 115 constituting the main body 11. A main body frame 115 shown in FIG. 3 is a cylindrical metal member, and the advancing portion 12 is stored in the central portion in the axial direction. Therefore, a large notch 115a is provided in the central portion of the main body frame 115 in the axial direction so as not to inhibit the advancement / retraction of the advancement portion 12. A rubber heater 116 is wound around the outer peripheral surface of the main body frame 115 around the entire circumference except for both ends.

  FIG. 3 also shows a base body 122 that constitutes the advancing portion 12. The base body 122 is disposed inside the rubber 13 ′ that forms the outer peripheral surface 12 b of the advancing portion 12, and includes a cylindrical frame 1221 and a disk member 1222. The cylindrical frame 1221 extends in the tube axis direction of the attachment tube 91 (the advancing direction of the advancing portion 12). The disk member 1222 is a plate member that is larger than the cylindrical frame 1221 and is concentrically attached to the cylindrical frame 1221 at the upper portion of the cylindrical frame 1221 (the leading end portion in the advancing direction of the advancing portion 12). The rubber 13 ′ forming the outer peripheral surface 12 b of the advancing portion 12 is sandwiched between the disk member 1222 and the fixing plate 121, and a fixing bolt 120 passing through the center of the advancing portion 12 is tightened and fixed to the base body 122.

  Chains 14 are connected to the outer peripheral end of the disk member 1222 every 90 °. That is, the four chains 14 are connected to different positions of the base 122 at the front end portion in the advance direction of the advance portion 12. These chains 14 are equal in length. FIG. 3 shows a state in which the repair member 50 is pressed against both the inner peripheral wall 90a of the sewer main pipe and the inner peripheral wall 91a of the attachment pipe, and the four chains 14 shown in FIG. I support it. The other ends of the four chains 14 each having one end connected to the disk member 1222 are connected to the main body 11.

  Here, the internal structure of the packer 1 shown in FIG. 3 will be described in more detail with reference to FIG.

  FIG. 4 is a diagram showing a connection structure using the four chains shown in FIG.

  A total of four eyebolts 123 are arranged on the surface 1222a of the disk member 1222 on the cylindrical frame 1221 side every 90 ° in the circumferential direction. FIG. 4 shows the tips 1231 of the threaded portions of the four eyebolts 123. Although not shown in FIG. 3, the cylindrical frame 1221 shown in FIG. 4 shows a notch 1221a provided corresponding to the portion where the eyebolts 123 are provided. One eye 141 of one chain 14 is connected to one eyebolt 123. In FIG. 4, for clarity of the drawing, only the two chains 14 on the front side among the four chains 14 are shown, and the two chains 14 on the back side are not shown. As shown in FIG. 4, one end portion of the chain 14 connected to the eyebolt 123 is located outside the cylindrical frame 1221, but the chain 14 passes through the cylindrical frame 1221 from the notch 1221 a and the main body portion. 11 is extended. That is, each of the four chains 14 is connected to positions different from each other on the radially outer side of the cylindrical frame 1221 with respect to the cylindrical frame 1221.

  The other ends 142 of these chains 14 are connected to one place of the main body 11 through the intermediate member 15. The intermediate member 15 has two shackles 151 and a joint portion 152. Four chains 14 are connected to one shackle 151 by two. Each of the two shackles 151 is rotatable in the vertical direction (the advancing / retreating direction of the advancing portion) with the bolt 1511 as a rotation axis (see arrow A) and is also movable in the axial direction of the bolt 1511 (see arrow B). ) Is attached to the joint portion 152. The joint part 152 and the main body part 11 are connected by a ball joint structure. That is, the ball portion 1521 provided in the joint portion 152 enters the receiving portion 117 provided in one place of the main body portion 11, and the intermediate member 15 can swing 360 ° with respect to the main body portion 11.

  FIG. 4 also shows a state in which these four chains 14 are in tension. In the state where the chain 14 is in tension, the center point of the ball portion 1521 (the connection center with the main body portion 11), the connecting portion of the chain 14 with the shackle 151 (the other end 142), and the chain 14 The connecting portion (one end 141) with the eyebolt 123 is arranged in a straight line as shown by a one-dot chain line shown in FIG. Thus, by arranging in a straight line, the base body 122 is less likely to tilt. On the other hand, in the packer 1 in the reduced diameter state shown in FIG. 1, the four chains 14 are completely slackened so as to crawl the bottom of the main body 11. When pressurized air is supplied to the main body part 1 of the reduced-diameter packer 1, the advance part 12 stored in the main body part 11 advances toward the attachment pipe, and the advance part 12 completely enters the attachment pipe. As shown in FIG. 4, the four chains 14 are in a tensioned state and the two shackles 151 are in an upright state, and the advancing portion 12 is supported by these four chains 14.

  A rubber heater 124 is wound around the outer peripheral surface of the cylindrical frame 1221 shown in FIG. In FIG. 4, the rubber 13 ′ forming the outer peripheral surface 12 b of the advancing portion 12 is shown by a one-dot chain line, but the rubber heater 124 is disposed between the rubber 13 ′ and the cylindrical frame 1221. There is a function of heating the outer peripheral surface 12b of the advance portion 12. The rubber heater 124 is also provided with a notch that matches the notch 1221a of the cylindrical frame 1221.

  Next, the non-opening repair method using the packer shown in FIG. 1 will be described.

  First, the repair member 50 is attached to the packer 1 in a reduced diameter state shown in FIG. The cylindrical portion 51 of the repair member is fitted on the advancing portion 12, and the advancing portion 12 holds the repair member 50 on the outer peripheral surface 12b. On the other hand, the flange part 52 and the main pipe repair part 53 are in a state of being externally fitted to the main body part 11.

  Next, the packer 1 to which the repair member 50 is attached is carried into the sewer main from the manhole while maintaining the reduced diameter state, and moved within the sewer main by being pulled by a towing vehicle (not shown) to be repaired. To reach. A television camera (not shown) is inserted into the attachment pipe 91 to be repaired from the ground side, and it is confirmed whether the distal end surface 12a of the advancing portion 12 faces the opening 91b of the attachment pipe 91. When the distal end surface 12a of the advancing portion 12 is displaced from the opening 91b of the attachment pipe 91, the packer 1 is moved upstream or downstream of the sewer main pipe 90, or the packer 1 is moved by the rotating device 2 shown in FIG. It rotates in the circumferential direction of the sewer main pipe 90, and adjusts so that the front end surface 12a of the advance part 12 faces the opening 91b of the attachment pipe 91.

  Subsequently, pressurized air is supplied from the supply hose 111 to the main body 11 while gradually increasing. When the compressed air is supplied to the packer 1 in the reduced diameter state, the rubber 13 on the outer periphery of the main body 11 extends and expands in the radial direction of the sewer main 90, and the advancing portion 12 extends from the sewer main 90 side. Advance toward the mounting tube 91. At this time, each of the four chains 14 is pulled by the advancing portion 12 that advances, and gradually becomes tense. According to the packer 1 of the present embodiment, since the four chains 14 are connected to one place of the main body 11, the downstream side even if the mounting direction of the mounting pipe 91 is inclined to the upstream side of the sewer main pipe 90. Even if the mounting portion of the attachment pipe 91 is provided at various positions in the circumferential direction of the sewer main pipe 90, the advancing portion 12 can be easily placed accurately in the attachment pipe 91.

  Further, in the packer 1 in which the rubber 13 ′ forming the outer peripheral surface 12 b of the advancing portion 12 is fixed to the base body 122 by the fixing bolt 120, the base body 122 may be inclined with the fixing bolt 120 as a fulcrum. If the center of the force applied by the supply of pressurized air to the advancing portion 12 is inside the connection point of each of the four chains 14 with the advancing portion 12, the base body 122 will not tilt, The more the connection point is on the outside, the more the base body 122 is prevented from tilting. According to the packer 1 of the present embodiment, one end of each of the four chains 14 is connected to the outer peripheral end portion of the disk member 1222. That is, one end of each of the four chains 14 is connected to the outer side in the radial direction of the cylindrical frame 1221 with respect to the cylindrical frame 1221, so that one end of each of the four chains 14 is connected to the cylindrical frame 1221. Compared to the case, the base 122 is less inclined. In addition, since one end of each of the four chains 14 is connected to the front end portion of the base portion 122 in the advancing direction of the advancing portion 12, it is connected to the rear end portion of the base portion 122 in the advancing direction of the advancing portion 12. Compared to the case where the substrate 122 is present, the substrate 122 is less likely to tilt. Therefore, in the packer 1 of the present embodiment, even when pressurized air is supplied, the rubber 13 ′ forming the outer peripheral surface 12b of the advancing portion 12 is locally pulled and the rubber 13 ′ is broken. Is reduced.

  When the pressure of the pressurized air is further increased, as shown in FIG. 3, the rubber 13 on the outer periphery of the main body 11 causes the flange portion 52 and the main pipe repair portion 53 of the repair member 50 to be connected to the inner peripheral wall 90 a of the sewer main pipe 90. The rubber 13 ′ forming the outer peripheral surface 12 b of the advancing portion 12 presses the cylindrical portion 51 of the repair member 50 against the inner peripheral wall 91 a of the attachment tube 91. The epoxy resin or the like impregnated in the flange portion 52 and the main pipe repair portion 53 pressed against the inner peripheral wall 90a of the sewer main pipe 90 is cured by heat from the rubber heater 116 wound around the outer peripheral surface of the main body frame 115. It is accelerated and hardens in a short time. Further, the epoxy resin or the like impregnated in the cylindrical portion 51 pressed against the inner peripheral wall 91a of the mounting pipe 91 is also accelerated by heat from the rubber heater 124 wound around the outer peripheral surface of the cylindrical frame 1221. Cures reliably in a short time. If the resin impregnated in the tubular portion 51 is reliably cured within a short time, the end of the tubular portion 51 on the flange portion 52 side hangs down to the sewer main 90 side. It is possible to suppress the occurrence. When the curing of the epoxy resin or the like impregnated in the repair member 50 is completed, the sewer main pipe inner peripheral wall 90a and the attachment pipe inner peripheral wall 91a are integrally backed by the repair member 50. Thus, by lining the both inner peripheral walls 90a and 91a integrally, water entering from the attachment portion of the attachment pipe 91 to the sewer main pipe 90 can be firmly stopped. In addition, since the repair member 50 is impregnated with an epoxy resin or the like having good adhesiveness, the waterstop is further enhanced. Such an integral lining is not limited to repairing a damaged part due to aging, ground subsidence or ground pressure fluctuation, etc., but when the attachment pipe 91 is newly attached to the sewer main 90. It is also effective when repairing defects in the mounting part.

  Finally, the pressurized air is discharged from the main body 11 via the discharge hose 112, and the inside of the main body 11 is further depressurized. The diameter-expanded packer 1 shown in FIG. 3 returns to the diameter-decreasing packer shown in FIG. That is, the advancing portion 12 is reduced in diameter and retracted from the attachment pipe 91 toward the sewer main 90 side and stored in the main body 11. Further, the diameter of the rubber 13 on the outer periphery of the main body 11 is also reduced. When the packer 1 is in a reduced diameter state, the packer 1 is pulled up from the sewer main 90 through the manhole to the ground.

  Next, a modification of the connection structure of the four chains 14 with the main body 11 will be described. In the following description, descriptions overlapping with those described so far will be omitted, and components having the same names as the names of the components described so far will be described with the same reference numerals used.

  FIG. 5 is a diagram schematically showing the internal structure of the packer for explaining the first modification.

  In FIG. 5, the rubber on the outer periphery of the main body 11 and the rubber forming the outer peripheral surface of the advancing portion 12 that is integral with the rubber are not shown. FIG. 5 also shows four chains 14 each having one end 141 connected to the base body 122. The other ends 142 of these chains 14 are connected to one place of the main body 11 through a U-shaped metal fitting 16. That is, each of the other ends 142 of the four chains 14 is connected to one U-shaped bracket 16, and one end 141 of the four chains 14 is given a certain degree of horizontal freedom. Yes.

  Although the U-shaped metal fitting 16 is interposed here, the other ends 142 of the four chains 14 may be directly connected to one place of the main body 11.

  FIG. 6 is a diagram illustrating a second modification of the connection structure of the four chains with the main body.

  The connection structure of the second modified example is different from the connection structure shown in FIG. 4 in the shape of the joint portion 152 of the intermediate member 15. In the joint portion 152 shown in FIG. 6, a hole portion 1522 is provided instead of the ball portion 1521. The support shaft 17 provided in the main body 11 is passed through the hole 1522. The support shaft 17 shown in FIG. 6 extends in a direction (arrow Y direction) orthogonal to the axial direction (arrow X direction) of the main body frame 115 on the horizontal plane. The joint portion 152 shown in FIG. 6 is inclined to the upstream side (one side in the arrow X direction) of the sewer main pipe or the downstream side (the other side in the arrow X direction) with the support shaft 17 as a rotation axis. The main body 11 is pivotally supported so as to be rotatable and movable in the axial direction of the support shaft 17 (arrow Y direction).

  In the description so far, the linear member connecting the advance portion 12 and the main body portion 11 has been the chain 14, but it is not limited to the chain and may be a wire or the like, and the number thereof may be one or two. If it is a book, the posture of the substrate 122 becomes unstable, but if it is three, the posture is stable, and may be five or more.

  Moreover, although the packer 1 demonstrated above was a repair apparatus which repairs a sewer pipe, this invention is applicable also to the repair apparatus which repairs pipes of other uses, such as a gas pipe. Moreover, although the repair member 50 used here has the cylindrical part 51, the flange part 52, and the main pipe repair part 53, it may have only the cylindrical part 51 and the flange part 52. Or it may have only the cylindrical part 51.

It is a perspective view of the packer which is one Embodiment of the repair apparatus of this invention. It is a perspective view which shows the state which the advance part of the packer shown in FIG. 1 advanced. It is the figure which showed typically the internal structure of the packer shown in FIG. It is a figure which shows the connection structure by four chains shown in FIG. It is the figure which showed typically the internal structure of the packer in order to demonstrate a 1st modification. It is a figure which shows the 2nd modification of the connection structure with a main-body part of four chains.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Packer 11 Main body part 12 Advancement part 12a Outer peripheral surface 122 Base 1221 Cylindrical frame 1222 Disk member 124 Rubber heater 13, 13 'Rubber 14 Chain 141 One end 142 Other end 15 Intermediate member 50 Repair member 90 Sewer main pipe 90a Inner peripheral wall 91 Attachment Pipe 91a Inner wall

Claims (3)

In the repair device that presses the repair member against the inner peripheral wall of the branch pipe branched from the main pipe and backs the inner peripheral wall with the repair member,
A main body disposed in the main pipe and supplied with pressurized fluid;
The repair member is held on the outer peripheral surface, and the pressurized fluid is supplied to the main body portion so that the repair member moves from the main pipe side toward the branch pipe, and the repair member is placed inside the branch pipe in the branch pipe. An advancing part that presses against the peripheral wall,
Each one end is connected to a different position of the advancing portion, and the other end with respect to the one end is connected to one place of the main body portion directly or through an intermediate member, and the advancing portion that has advanced into the branch pipe is strained A repair device comprising three or more filaments having the same length and being supported in a state. In the repair device that presses a repair member impregnated with a resin that is cured by heating to the inner peripheral wall of the branch pipe branched from the main pipe, and the inner peripheral wall is lined by the repair member,
A main body disposed in the main pipe and supplied with pressurized fluid;
A rubber forming an outer peripheral surface, a base disposed inside the rubber and extending in the tube axis direction of the branch pipe, and a heating element disposed between the rubber and the base, the repair member on the outer peripheral surface The pressurized fluid is supplied to the main body so that the rubber advances from the main pipe side toward the branch pipe, and the rubber is stretched in the branch pipe by the pressurized fluid supplied to the main body. The repairing member is pressed against the inner peripheral wall of the branch pipe by expanding the diameter, and an advancing portion that promotes curing of the resin by heat from the heating element;
Each one end of the base is connected to a different position of the tip in the advance direction of the advance portion, and the other end with respect to the one end is connected to the main body, and the advance portion that has advanced into the branch pipe is in tension. A repairing device comprising three or more striate bodies that are supported by each other and have the same length. In the repair device that presses the repair member against the inner peripheral wall of the branch pipe branched from the main pipe and backs the inner peripheral wall with the repair member,
A main body disposed in the main pipe and supplied with pressurized fluid;
A rubber that forms an outer peripheral surface, and a cylindrical frame that is disposed inside the rubber and extends in the tube axis direction of the branch pipe; holds the repair member on the outer peripheral surface; By being supplied, it advances from the main pipe side toward the branch pipe, and the rubber is expanded and expanded in diameter by the pressurized fluid supplied to the main body portion in the branch pipe, thereby removing the repair member from the branch pipe. An advancing part that presses against the inner peripheral wall of the pipe;
One end of each of the advancing portions is connected to a different position on the radially outer side of the cylindrical frame with respect to the cylindrical frame, and the other end with respect to the one end is connected to the main body portion and advances into the branch pipe. A repair device comprising three or more striate bodies having the same length to support the advanced portion in a tensioned state.

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