JP6334121B2 - Wire take-up device - Google Patents

Description

  The present invention relates to a take-up device that pulls a wire connected to an object from the manhole to the ground in order to draw the object into a pipe line connected to the manhole.

  As a conventional wire take-up device, for example, there is one described in Patent Document 1. The wire take-up device includes a frame installed at the lower part of a manhole, a first guide roller and two brace members provided on the frame, two support rods, a work platform installed on the ground (on the wire outlet side) And a second guide roller installed on the work platform. One end of each of the two brace members is connected to the frame, and the other end is abutted against the inner surface of the manhole on the conduit side. As a result, the frame is arranged away from the side wall of the manhole. The support rod is a linear member extending in the depth direction of the manhole, and both ends thereof are coupled to the frame and the work platform. Thereby, the frame and the work platform are connected. The work base is provided with a plurality of fixed legs. The work platform is installed so as to straddle the upper end opening of the manhole by being grounded so that the plurality of fixed legs surround the edge of the manhole.

  In addition, a fixing ring is installed in the upper end opening of the manhole on the wire entrance side of Patent Document 1 instead of the work base. Specifically, a bolt is inserted into the first tubular mounting portion provided inside the fixing ring, and the nut is tightened while the hook portion is locked to the lower surface of the manhole cover receiving ring projection at the manhole opening. By doing so, the fixing ring is fixed to the manhole.

  The wire inserted into the pipe is wound around the first guide roller, and the wire guided upward by the first guide roller is wound around the second guide roller. Then, the wire is wound up by a winch. Although the winch is not shown, it is assumed that the winch is installed at a position away from the manhole. The wire drawn out from the inside of the pipe line is taken up by the winch via the first guide roller and the second guide roller.

Japanese Utility Model Publication No. 6-24191

  By the way, when the wire is wound up, a force is applied from the wire to the first guide roller so as to float upward as a whole of the wire take-up device. Here, the work platform on the wire exit side is installed so as to straddle the upper end opening of the manhole by grounding a plurality of fixed legs so as to surround the edge of the manhole. In other words, the work platform is merely placed so as to straddle the upper end opening of the manhole. Therefore, when the wire is wound up by the hoisting device installed outside, the entire wire take-up device may be lifted by the upward force applied from the wire to the first guide roller.

  In addition, it is possible to prevent the lifting due to the force applied to the guide roller by fixing the fixing ring to the manhole as on the wire entrance side, but according to this method, the fixing ring must be installed directly on the manhole at the site. Therefore, the man-hours for installing and removing the wire take-up device are increased. Furthermore, in the configuration of Patent Document 1, even if the work platform and the fixing ring can be firmly fixed to prevent lifting, if the wire take-up load increases, a reaction force is directly applied to the winch for winding the wire. It must be fixed more firmly, and the man-hour is further increased. Therefore, it becomes difficult to install and remove the wire take-up device in a short time.

  This invention is made | formed in view of the said situation, The objective is to provide the wire pulling apparatus which can perform installation and removal in a short time, and can suppress a float. .

Means for Solving the Problems and Effects of the Invention

  The wire pulling device of the first invention is a wire pulling device that pulls a wire coupled to the pulling object from the manhole to the ground in order to pull the pulling object into a pipe line connected to the manhole. A first structure in which both end portions in the length direction of the pipe line are respectively fixed to an inner surface of the manhole, and the wire inserted into the pipe line is wound around the first structure body. A second guide body having a first guide roller for guiding the wire upward, a ground installation part installed around an upper end of the manhole, and a projecting part that projects to the manhole in an installed state; A rod-like member having one end connected to the first structure and the other end connected to the projecting portion of the second structure and extending vertically along the inner surface of the manhole; Said And a hoisting device that winds up the wire guided by the first guide roller, and at least a part of the hoisting position of the wire of the hoisting device is a member other than the rod-shaped member. It is arrange | positioned at the said protrusion part used as the upper end circumference side of the said manhole from the connection part of an edge part and the protrusion part of the said 2nd structure. The first structure that is “fixed” to the inner surface of the manhole is removable. Here, the projecting portion in the present invention shows the entire portion protruding from the manhole, and the connecting portion to which the other end of the rod-like member is connected refers to a part of the projecting portion.

  In the present invention, the first guide roller for guiding the wire upward is provided, the first structure fixed to the inner surface of the manhole, the ground installation portion installed around the upper end of the manhole, and the manhole installed And a second structure having a projecting portion that projects to the outside are integrated by a bar-like member extending in the vertical direction along the inner surface of the manhole. In addition, a hoisting device for winding the wire is installed in the second structure, and this hoisting device is connected to the manhole by a connecting portion between the other end of the rod-like member and the projecting portion of the second structure. It arrange | positions at the said protrusion part used as the upper end circumference side. Accordingly, the wire is wound up around the upper end of the manhole from the connecting portion between the other end of the rod-shaped member and the projecting portion of the second structure. Accordingly, when the wire is wound up, the second structure is opposed to the upward force applied from the wire to the first guide roller at the connecting portion between the other end of the rod-shaped member and the protruding portion of the second structure. A downward force is generated from the body. Therefore, the wire take-up device can be prevented from rising.

  Moreover, since it is not necessary to fix the second structure, the number of man-hours required for installation work at the site can be minimized. Therefore, installation and removal can be performed in a short time.

  The wire pulling device of the second invention is a wire pulling device that pulls a wire connected to the pulling object from the manhole to the ground in order to pull the pulling object into a pipe line connected to the manhole. A first structure in which both end portions in the length direction of the pipe line are respectively fixed to an inner surface of the manhole, and the wire inserted into the pipe line is wound around the first structure body. A first guide roller that guides the wire upward, a ground installation part installed around the upper end of the manhole, and a second structure having a projecting part that projects to the manhole in the installed state, A rod-like member having one end connected to the first structure and the other end connected to the projecting portion and extending in the vertical direction along the inner surface of the manhole, and the second structure In A second guide roller around which the wire guided by the first guide roller is wound, and a hoisting device installed on the second structure and winding up the wire guided by the second guide roller And at least a part of the second guide roller is disposed in the protruding portion that is on the peripheral side of the upper end of the manhole from the connecting portion between the other end of the rod-shaped member and the protruding portion. It is characterized by being.

  In the present invention, the first guide roller for guiding the wire upward is provided, and the first structure fixed to the inner surface of the manhole and the second guide roller around which the wire guided by the first guide roller is wound. And a second structure having a ground installation portion installed around the upper end of the manhole and a projecting portion that projects to the manhole in the installed state, extends vertically along the inner surface of the manhole. It is integrated by a rod-shaped member. The second structure is provided with a hoisting device for winding the wire. Furthermore, the 2nd guide roller provided in the 2nd structure is arrange | positioned from the connection part of the other end part of a rod-shaped member, and the protrusion part of a 2nd structure at the upper end circumference side of a manhole. Therefore, the wire is wound up through the second guide roller installed on the peripheral side of the upper end of the manhole from the connecting portion between the other end portion of the rod-shaped member and the protruding portion of the second structure. Accordingly, when the wire is wound up, the second structure is opposed to the upward force applied from the wire to the first guide roller at the connecting portion between the other end of the rod-shaped member and the protruding portion of the second structure. A downward force is generated from the body. Therefore, the wire take-up device can be prevented from rising. Here, the projecting portion in the present invention shows the entire portion protruding from the manhole, and the connecting portion to which the other end of the rod-like member is connected refers to a part of the projecting portion.

  Moreover, since it is not necessary to fix the second structure, the number of man-hours required for installation work at the site can be minimized. Therefore, installation and removal can be performed in a short time.

  According to a third aspect of the present invention, there is provided the wire guide device according to the first or second aspect, wherein the first guide roller is provided at an end portion of the first structure opposite to a connection portion between the manhole and the conduit. Is attached.

  In this invention, the 1st guide roller is attached to the edge part on the opposite side to the connection part of a manhole and a pipe line of a 1st structure. Therefore, the first guide roller is located in the vicinity of the inner surface of the manhole on the side opposite to the conduit. Thereby, the to-be-drawn object connected to the wire can be drawn to the vicinity of the inner surface of the manhole on the side opposite to the duct.

  According to a fourth aspect of the present invention, there is provided the wire take-up device according to any one of the first to third aspects, wherein the first structures are arranged in a length direction of the pipe line, and the one end portions of the rod-shaped members are respectively arranged. It has a plurality of connecting portions that can be connected.

  Here, when the first structure has only one connecting portion, for example, when the side wall of the manhole is an inclined wall inclined with respect to the vertical direction, the rod-shaped member interferes with the inclined wall. It may not be possible to connect.

  In the present invention, the first structure has a plurality of connecting portions that are arranged in the length direction of the pipe line and that can connect one end portions of the rod-shaped members. Therefore, for example, even if the manhole is an inclined wall, a connecting portion that can be connected to the rod-shaped member among the plurality of connecting portions can be selected and connected.

  In the wire take-up device according to a fifth aspect of the present invention, in any one of the first to fourth aspects of the invention, the bar-shaped member has a bending direction opposite to each other in a plane including the bar-shaped member in the middle in the length direction. It is characterized by having two bent parts.

  In the present invention, the rod-shaped member has two bent portions whose bending directions are opposite to each other in a plane including the rod-shaped member, in the middle in the length direction. Therefore, for example, even when the manhole is an inclined wall, the rod-shaped member can be installed along the side wall of the manhole. Thereby, a wide working space can be secured in the manhole after the wire take-up device is installed.

It is sectional drawing along the vertical plane containing the length direction of a pipe line which shows the state in the pipe line after repair. It is a figure which shows drawing-in of the lining material using a wire pulling apparatus. It is an enlarged view of the A section of FIG. It is AA sectional drawing of FIG. (A) is a perspective view of a 1st rod-shaped member, (b) is a perspective view of a 2nd rod-shaped member. It is a top view of the 2nd structure shown in FIG. 4, and a winding apparatus. FIG. 4 is a cross-sectional view corresponding to FIG. 3 in a form in which a second rod-like member is applied when the manhole is an inclined wall. FIG. 4 is a view corresponding to FIG. 3 in a form in which a second guide roller is installed in the second structure.

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

  FIG. 1 shows a state after a pipe line P such as a sewer pipe buried in the ground is repaired by a lining material 1. The pipe line P is connected to the ground via manholes M1 and M2.

  When repairing the pipe line P with the lining material 1 made of a hard thermoplastic resin such as vinyl chloride, first, the pipe line P connected to the manholes M1 and M2 while heating the lining material 1 wound around the reel 2 It is drawn in and inserted into a predetermined section so that both end portions thereof protrude into the manholes M1 and M2, respectively. After being inserted into the pipe P, sealing tools (not shown) for sealing the lining material 1 are attached to both ends of the lining material 1, respectively. After attaching the sealing tool (not shown), steam is supplied into the lining material 1 and the lining material 1 is heated and pressurized to expand the outer periphery of the lining material 1 to a size corresponding to the inner periphery of the pipe P. Diameter. Then, the lining material 1 is re-solidified by supplying pressurized air, exhausting the steam, and cooling for a certain period of time. Thereafter, the sealing tool (not shown) is removed, and the lining material 1 protruding from the end of the pipe P to the manholes M1 and M2 is cut out.

  As described above, according to the present invention, in the repair work of the pipe line P using the lining material 1 made of a hard thermoplastic resin, as shown in FIG. 2, the pipe line P connected to the manholes M1 and M2 is disposed in the pipe line P. This is a wire pulling device 100 for pulling the wire 3 connected to the tip of the lining material 1 from the manhole M2 to the ground when the lining material 1 is drawn. As shown in FIG. 3, the wire take-up device 100 is provided with a first guide roller 16, a first guide roller 16, a first structure 10 installed in the manhole M <b> 2, and installed around the upper end of the manhole M <b> 2. The second structure 30 and the roller 35a are provided, the hoisting device 35 installed on the second structure 30, and both ends thereof are connected to the first structure 10 and the second structure 30, respectively. And a rod-like member extending in the vertical direction along the side wall of M2. As the rod-shaped member, the first rod-shaped member 20 or the second rod-shaped member 21 is appropriately selected and used according to the shape of the side wall of the manhole M2. In the present embodiment, first, a case where the side wall of the manhole M2 is parallel to the vertical direction and the first rod-like member 20 is applied as the rod-like member will be described.

  First, the first guide body 16 and the first guide roller 16 provided in the first structure 10 will be described.

  As shown in FIG. 4, the first structure 10 includes two frame parts 11, a first connection member 12, a second connection member 13, and a third connection member 14.

  The frame portion 11 includes a bent cylinder 11a, a screw rod 11b, a nut member 11c, a first pressure receiving plate 11d, and a second pressure receiving plate 11e. The tube 11a is formed with a bent portion 11f from a substantially central portion in the length direction to one end. A screw rod 11b is inserted into one end portion of the bent portion 11f. A nut member 11c is screwed to one end of the screw rod 11b. A first pressure plate 11d is attached to one end of the screw rod 11b. A second pressure receiving plate 11 e is attached to the other end portion of the frame portion 11. The two frame portions 11 can adjust the lengths of the screw rods 11b protruding from one end of the cylinder 11a by rotating the nut member 11c.

  The two frame portions 11 are connected by the first connection member 12, the second connection member 13, and the third connection member 14. The first connection member 12 and the second connection member 13 are connected to the other end portions of the two frame portions 11. Therefore, the first connection member 12 and the second connection member 13 are arranged at the end of the first structure 10. The first connecting member 12 and the second connecting member 13 are arranged so as to be the first connecting member 12 and the second connecting member 13 in order from the other end side of the two cylinders 11. The third connection member 14 is connected to the bent portion 11 f of the two frame portions 11.

  The first connecting member 12 is provided with a first connecting portion 12a at a substantially central portion in the length direction. This 1st connection part 12a is for inserting the one end part of the 1st rod-shaped member 20 mentioned later, The magnitude | size and shape of the inner periphery are the outer periphery of the one end part of the inserted 1st rod-shaped member 20 Corresponds to the size and shape. Moreover, the 1st connection part 12a is provided with the bolt hole 12b in the two mutually opposing side walls, respectively. A plurality of the bolt holes 12b may be provided so as to be arranged in the length direction of the first connecting portion 12a.

  The first connecting member 12 is provided with a first guide roller 16 at a substantially central portion in the length direction on the lower side with the first connecting portion 12a. The first guide roller 16 is rotatably supported by a first roller support portion 16 a provided on the first connection member 12. The wire support portion 16b of the first guide roller 16 is arranged in a state of protruding to the second pressure receiving plate 11e side with respect to the first connection member 12.

  Moreover, the 2nd connection member 13 is provided with the 2nd connection part 13a in the length direction substantially central part similarly to the 1st connection part 12a. Further, on the side surface of the second connecting portion 13a, bolt holes 13b are provided in two opposite side walls. A plurality of bolt holes 13b may be provided so as to be aligned in the length direction of the second connecting portion 12a.

  Next, the 1st rod-shaped member 20 is demonstrated. As shown to Fig.5 (a), the 1st rod-shaped member 20 makes | forms linear form. The length of the 1st rod-shaped member 20 is longer than the length from the upper end of the manhole M2 to the lower part of the manhole M2 in which the 1st structure 10 is installed. The thickness of the 1st rod-shaped member 20 respond | corresponds to the inner periphery of the connection part 31 provided in the 1st connection part 12a, the 2nd connection part 13a, and the 2nd structure 30 mentioned later. This thickness can be appropriately selected by changing the inner periphery of the first connecting portion 12a, the second connecting portion 13a, and the connecting portion 31 provided in the second structure 30 described later. The inside of the 1st rod-shaped member 20 is hollow. As for the 1st rod-shaped member 20, the cross section orthogonal to the length direction has square shape. In addition, the cross-sectional shape orthogonal to the length direction of the 1st rod-shaped member 20 is not this limitation. On the side surface of the first rod-shaped member 20, bolt holes 20 a are provided in two opposing side walls. A plurality of the bolt holes 20a are provided in the first rod-like member 20 so as to be aligned in the length direction.

  Next, the winding device 35 provided with the second structure 30 and the roller 35a will be described.

  As shown in FIG. 6, the second structure 30 has a substantially rectangular parallelepiped shape. The second structure 30 is provided with a rectangular hole 30c at one corner (lower left corner in the figure). A hoisting device 35 is placed on and fixed to the second structure 30. The hoisting device 35 is provided with a roller 35a for winding the wire 3 and leading it out by turning. The second structure 30 includes a projecting portion 30a that is a portion protruding from the manhole M2, a ground installation portion 30b that is a portion installed around the upper end of the manhole M2, and a connecting portion 31. Here, the projecting portion in the present invention indicates the entire portion protruding from the manhole M2, and 30a indicates a part of the projecting portion. The shape and thickness of the second structure 30 may be changed as appropriate. The hole 30c only needs to allow the wire 3 guided upward by the first guide roller 16 to pass through the second structure 30, and the shape and size of the hole 30c may be changed as appropriate.

  The protruding portion 30a is provided with the hole 30c described above. The connecting part 31 is installed in the projecting part 30a. The connecting portion 31 is for inserting the other end portion of the first rod-shaped member 20, and the size and shape of the inner periphery thereof is the size of the outer periphery of the other end portion of the inserted first rod-shaped member 20. And corresponds to the shape. Bolt holes 31 a are provided in two side walls facing each other on the side surface of the connecting portion 31. A plurality of bolt holes 31 a may be provided in the length direction of the connecting portion 31. Further, the hoisting device 35 is placed on the projecting portion 30a and the ground installation portion 30b so as to straddle them. The hoisting device 35 is disposed on the periphery of the upper end of the manhole M2 from the connecting portion 31, and the roller 35a of the hoisting device 35 is disposed above the hole 30c.

  Next, an installation method of the wire take-up device 100 will be described.

  First, as shown in FIGS. 2, 3, and 4, the first structure 10 is installed below the manhole M <b> 2. The length of the screw rod 11b of the first structure 10 is adjusted. The first structure 10 is disposed so that the length direction thereof is parallel to the length direction of the pipe line P, and is disposed horizontally so as to cross the manhole M2. Moreover, the 1st structure 10 is installed so that the edge part by the side of the 1st connection part 12 may be on the opposite side to the connection part of the manhole M2 and the pipe line P in the length direction.

  Next, the 1st structure 10 is lengthened gradually by rotating the nut member 11c, respectively. As the length increases, the first pressure receiving plate 11d attached to the first structure 10 is strongly pressed against the inner wall surface of the manhole M2. Accordingly, the second pressure receiving plate 11e is also strongly pressed against the inner surface of the manhole M2. Therefore, both end portions of the first structure 10 can be firmly pressed and fixed to the inner surface of the manhole M2, respectively.

  Next, the 1st connection part 12a and the 1st rod-shaped member 20 are connected. One end of the rod-shaped member 20 is inserted into the first connecting portion 12a. Bolts 15 are inserted into the bolt holes 12 b of the first connecting portion 12 a and the bolt holes 20 a of the first rod-shaped member 20, and are fixed by the nuts 19. Since the 1st connection part 12a is provided in the 1st connection part 12, and the 1st connection part 12 is installed in the longitudinal direction edge part of the 1st structure 10, the 1st rod-shaped member 20 is the inside of the manhole M2. It is installed in the vicinity of the side surface so as to extend in the depth direction of the manhole M2. Therefore, a wide work space can be secured in the manhole M2 after the wire take-up device 100 is installed.

  In addition, when the 1st rod-shaped member 20 cannot be connected with the 1st connection part 12a, the 1st rod-shaped member 20 is connected with the 2nd connection part 13a, and it respond | corresponds.

  Next, as shown in FIGS. 2, 3, and 6, the second structure 30 on which the hoisting device 35 is placed and fixed is placed around the upper end of the manhole M2. The 2nd structure 30 is installed in the state in which the part (protrusion part 30a) protruded to the manhole M2. At this time, a hole 30c provided in the second structure 30 and a roller 35a of the hoisting device 35 placed on the second structure 30 above the first guide roller 16 installed in the first structure 10. And the connecting part 31 is located above the first connecting part 12a.

  Next, the connection part 31 and the rod-shaped member 20 are connected. The other end of the rod-shaped member 20 is fitted into the connecting portion 31, and the bolt 33 is inserted into the bolt hole 31 a of the connecting portion 31 and the bolt hole 20 a of the rod-shaped member 20, and is fixed by the nut 36. Here, the 1st rod-shaped member 20 has the some bolt hole 20a in the length direction. Therefore, by appropriately selecting the bolt hole 20a into which the bolt 36 is inserted, it is possible to deal with manholes having different depths by the single first rod-shaped member 20.

  As described above, after the wire take-up device 100 is installed, the reel 2 around which the lining material 1 is wound is installed around the manhole M1 as shown in FIG. The wire 3 is wound around the roller 35a from the manhole M2 side. Further, the wire 3 is guided below the manhole M2 and wound around the first guide roller 16. Thereafter, the wire 3 is connected to the tip of the lining material 1 wound around the reel 2 through the pipe line P and the manhole M1.

  Next, the pulling of the lining material 1 using the wire pulling device 100 will be described.

  After the wire 3 is pulled out from the inside of the pipe P, it is guided upward by the first guide roller 16 and pulled out via a roller 35a provided in the hoisting device 35. First, the lining material 1 is installed in the vicinity of the manhole M1, and pulled out while being heated and softened from a reel 2 placed in a heating device (not shown). Next, the roller 35a of the hoisting device 35 is rotated, and the wire 3 wound around the roller 35a is manually pulled, whereby the wire 3 is tightly wound around the roller 35a, so that the wire 3 is manhole M2. The tip of the lining material 1 connected to the wire 3 is drawn into the pipe P. The winding is further continued until the leading end of the lining material 1 reaches the position of the first guide roller 16. Note that the hoisting mechanism of the hoisting device 35 may employ, for example, a type in which one end of the wire 3 is fixed to the roller 35a and the wire 3 is wound around the roller 35a.

  In the present embodiment, the first guide roller 16 that guides the wire 3 upward is provided, the first structure 10 fixed to the inner surface of the manhole M2, and the ground installation portion 30b installed around the upper end of the manhole M2. In addition, the second structure 30 including the protruding portion 30a that protrudes into the manhole M2 in an installed state is integrated by the first rod-like member 20 extending in the vertical direction along the inner side surface of the manhole M2. ing. The second structure 30 is provided with a hoisting device 35 that winds up the wire 3, and the hoisting device 35 includes the other end of the first rod-shaped member 20 and the protruding portion of the second structure 30. It arrange | positions from the connection part 31 which connects 30a to the upper end circumference side of the manhole M2. Accordingly, the wire 3 is wound up around the upper end of the manhole M2 from the connecting portion 31. As a result, when the wire 3 is wound up, a downward force is generated from the second structure 30 against the upward force applied from the wire 3 to the first guide roller 16 at the connecting portion 31. Therefore, the wire take-up device 100 can be prevented from floating. In addition, since it is not necessary to fix the second structure 30, the number of man-hours for the installation work at the site can be minimized. Therefore, installation and removal can be performed in a short time.

  After the completion of drawing, the wire 3 is removed from the tip of the lining material 1 and the wire pulling device 100 is removed. Thereafter, as described above, the lining material 1 is heated and expanded, cooled and then re-solidified, and then both ends of the lining material 1 are cut off.

  Here, as shown in FIG. 4, since the first connection portion 12 is installed at the end portion in the length direction of the first structure 10, the first guide roller installed at the lower portion of the first connection portion 12. 16 is located at the longitudinal end of the first structure 10. Moreover, the 1st structure 10 is installed so that the edge part by the side of the 1st connection part 12 may be on the opposite side to the connection part of the manhole M2 and the pipe line P in the length direction. Therefore, the lining material 1 connected to the wire 3 can be drawn to the vicinity of the side wall of the manhole M2 on the side opposite to the pipe P. Thereby, when the lining material 1 is excised, more end portions of the lining material 1 can be excised, so that a sufficient sample of the end portion of the lining material 1 can be obtained.

  Further, for example, as shown in FIG. 7, when the manhole M3 is an inclined wall, the second rod-shaped member 21 may be applied instead of the first rod-shaped member 20.

  First, the 2nd rod-shaped member 21 is demonstrated. As shown in FIG. 5 (b), the second rod-shaped member 21 has two bent portions 21b and 21c whose bending directions are opposite to each other in the plane including the second rod-shaped member 21 in the middle in the length direction. A crank shape having The bending angles of the bent portions 21b and 21c may be appropriately selected as long as they are within a range that can withstand the force applied during winding of the wire 3 without breakage. The length of the 2nd rod-shaped member 21 is longer than the length from the upper end of the manhole M1, M2 to the lower part of the manhole M2 in which the 1st structure 10 is installed. The thickness of the 2nd rod-shaped member 21 respond | corresponds to the inner periphery of the connection part 31 provided in the 1st connection part 12a, the 2nd connection part 13a, and the 2nd structure 30. FIG. The inside of the 2nd rod-shaped member 21 is hollow. As for the 2nd rod-shaped member 21, the cross section orthogonal to the length direction has square shape. In addition, the cross-sectional shape orthogonal to the length direction of the 2nd rod-shaped member 21 is not this limitation. On the side surface of the second rod-shaped member 21, bolt holes 21 a are provided in two opposing side walls. A plurality of the bolt holes 21a are provided in the second rod-shaped member 21 so as to be aligned in the length direction.

  Thereby, for example, even if the linear first rod-shaped member 20 cannot be coupled to the first coupling portion 12a and can only be coupled to the second coupling portion 13a, the second rod-shaped member 21 is used. Thus, the second rod-shaped member 21 can be installed on the first connecting portion 12a closer to the side wall along the side wall of the manhole M3. Thereby, compared with the case where the 1st rod-shaped member 20 is applied, a large work space can be ensured in the manhole M2 after the wire take-up device 100 is installed.

  For example, as shown in FIG. 8, in the second structure 30, a second guide roller 34 is provided between the connecting portion 31 and the hoisting device 35, and the wire guided upward from the first guide roller 16. 3 may be sent to the roller 35 a via the second guide roller 34. Even in this configuration, when the wire 3 is wound, a downward force is generated from the second structure 30 against the upward force applied to the first guide roller 16 from the wire 3 in the connecting portion 31. It is possible to prevent the wire take-up device 100 from being lifted up.

  The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiments and examples, and various design changes can be made as long as they are described in the claims. is there.

  In the above embodiment, the first connecting body 12 is provided with the first connecting portion 12a and the second connecting portion 13a. However, the connecting portion provided in the first structure 10 is, for example, one or its connecting portion. Three or more may be arranged in the length direction.

  Moreover, in said embodiment, although the 1st connection part 12a and the 2nd connection part 13a of the 1st structure 10 are adjoining to the side wall of the manhole M2, the position of a connection part is the side wall of the manhole M2, for example. You may arrange | position in the place away from.

  Moreover, although this invention demonstrates the case where the lining material 1 which consists of a hard thermoplastic resin is applied in this embodiment, the lining material which can apply this invention is not this limitation. In addition, the present invention can be applied to a case where a non-lining material, such as an inspection camera or a cleaning instrument, is drawn into the pipeline.

DESCRIPTION OF SYMBOLS 1 Liner 3 Wire 10 1st structure 16 1st guide roller 20 1st rod-shaped member 21 2nd rod-shaped member 30 2nd structure 30a Projection part 30b Ground installation part 31 Connection part 34 2nd guide roller 35 Hoisting device 35a Roller 100 Wire take-up device P Pipe line

Claims (4)

A wire take-up device for drawing a wire connected to the drawing object from the manhole to the ground in order to draw the drawing object into a pipe line connected to the manhole,
A first structure in which both end portions in the length direction of the pipeline are respectively fixed to the inner surface of the manhole;
Provided at the end of the first structure opposite to the connection portion between the manhole and the pipe line into which the object to be drawn is drawn, and the wire inserted through the pipe is wound around A first guide roller for guiding the wire upward;
The ground connection portion installed around the upper end of the manhole, and a projecting portion that projects to the manhole in the installed state, and the connection portion between the manhole and the conduit into which the object to be drawn is drawn A second structure installed on the opposite side of
A rod-like member having one end connected to the first structure and the other end connected to the projecting portion, and extending vertically along the inner surface of the manhole;
A hoisting device installed on the second structure and winding the wire guided by the first guide roller;
At least a part of the wire winding portion of the hoisting device is disposed in the protruding portion that is on the peripheral side of the upper end of the manhole from the connecting portion between the other end portion of the rod-shaped member and the protruding portion. A wire take-up device. A wire take-up device for drawing a wire connected to the drawing object from the manhole to the ground in order to draw the drawing object into a pipe line connected to the manhole,
A first structure in which both end portions in the length direction of the pipeline are respectively fixed to the inner surface of the manhole;
Provided at the end of the first structure opposite to the connection portion between the manhole and the pipe line into which the object to be drawn is drawn, and the wire inserted through the pipe is wound around A first guide roller for guiding the wire upward;
The ground connection portion installed around the upper end of the manhole, and a projecting portion that projects to the manhole in the installed state, and the connection portion between the manhole and the conduit into which the object to be drawn is drawn A second structure installed on the opposite side of
A rod-like member having one end connected to the first structure and the other end connected to the projecting portion, and extending vertically along the inner surface of the manhole;
A second guide roller provided on the second structure and wound around the wire guided by the first guide roller;
A hoisting device installed on the second structure and winding the wire guided by the second guide roller;
At least a part of the second guide roller is disposed in the protruding portion that is on the peripheral side of the upper end of the manhole from the connecting portion between the other end of the rod-shaped member and the protruding portion. Wire take-up device.   3. The first structure body according to claim 1, wherein the first structure body includes a plurality of connecting portions that are arranged in a length direction of the pipe line and that can connect the one end portions of the rod-shaped members. Wire pulling device. The said rod-shaped member has two bending parts by which the bending direction becomes a mutually opposite direction in the plane containing the said rod-shaped member in the middle part of the length direction, The any one of Claims 1-3 characterized by the above-mentioned. The wire take-up device described in 1.

Images