JP3050777U - Waterproof sheet stretching device for tunnel construction - Google Patents

Abstract

(57) [Summary] [PROBLEMS] A conventional stretching device has a complicated structure and a high cost. A moving body (1) is driven by a driving body (2) to move on a guide rail (4) of a truck (3) provided in the tunnel in a circumferential direction of the tunnel, and a waterproof sheet stretching mechanism (5) provided on the moving body (1). An operation in which a waterproof sheet 6 is stretched on an inner wall surface 7 such as a tunnel or a segment provided inside the tunnel in a circumferential direction thereof, and an operator fixing the waterproof sheet 6 to the inner wall surface 7 on the moving body 1 can ride thereon. In the waterproofing sheet stretching apparatus for tunnel construction provided with a stand 8, the moving body 1 can be locked / released on the guide rail 4 and can fix the moving body 1 to the guide rail 4 when locked. A locking member 9 is provided, and the driving body 2 is capable of locking and releasing the driving body 2 to and from the guide rail 4 and fixing the driving body 2 to the guide rail 4 when locked. 10 is provided, a moving body locking device 9 and the driving body locking member 10 can be locked and released individually.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a waterproof sheet stretching device for tunnel construction, in which a waterproof sheet is stretched on an inner wall surface of a primary lining concrete covered on an excavation surface in a tunnel construction or an inner wall surface of a segment arranged inside the excavation surface. Things.

[0002]

[Prior art]

 In tunnel construction, rock is excavated with an excavator, primary lining concrete is sprayed on the excavated surface, and a waterproof sheet is stretched in the circumferential direction on the inner wall surface of the primary lining concrete. Arch concrete is cast. In some cases, a waterproof sheet is stretched in the circumferential direction on the inner wall surface of the segment located inside the excavation surface of the tunnel, and arch concrete is cast inside the waterproof sheet. Conventionally, in order to install a waterproof sheet, a scaffold is assembled in a tunnel, and an operator rides on the scaffold and manually stretches the waterproof sheet in the circumferential direction of the inner wall surface of the tunnel or segment and attaches tacks or pins. When the work is completed at that location, disassemble the scaffold once, reassemble the scaffold at the next work place, and stretch the waterproof sheet next to the waterproof sheet stretched last time in the same way as before. After fixing, the same work was repeated in the depth direction of the tunnel, and a waterproof sheet was stretched over the entire inner wall surface of the tunnel or segment. However, as described above, the work of stretching the waterproofing sheet by hand involves repeated assembling and disassembling of the scaffold, and thus the working efficiency is poor.

Accordingly, the present inventor has previously developed a waterproofing sheet stretching apparatus for tunnel construction as shown in FIG. 8 and applied for a patent (Japanese Patent Application No. 58-121576). This stretching device is patented as Patent No. 1602575. As shown in FIG. 8, the waterproof sheet stretching device for tunnel construction includes a truck A traveling in a tunnel, an arc-shaped guide member B mounted on the truck A, and a reciprocating motion along the guide member B by a driving mechanism thereof. The traveling device C comprises: a traveling device C capable of traveling; a hanging scaffold D rotatably mounted on the traveling device C so that the floor is always kept horizontal; and a waterproof sheet pull-out mechanism E provided on the traveling device C. The waterproof sheet F is pulled out from the rolled sheet by the waterproof sheet pull-out mechanism E while running the traveling device C along the guide member B, and the pulled-out waterproof sheet F is used as described above. The worker on the suspension scaffold D can fix it to the inner wall surface of the primary lining concrete with tacks or pins.

[0004]

[Problems to be solved by the invention]

 The waterproof sheet stretching apparatus shown in FIG. 8 functions sufficiently with this, and there is no particular problem. . A drive mechanism for running the traveling device C includes a gear motor H having drive sprockets G attached to both ends of a rotating shaft, and a set of 12 drive mechanisms rotatably attached to each of the two guide members B. , A driven sprocket J, a driving sprocket G, and a chain K hung on the driven sprocket J. Both ends of the chain K are fixed to a traveling device C, and the gear motor H is switched in a forward or reverse direction to rotate. By doing so, the traveling device C can reciprocate along the guide member B, so that there are many components, the structure becomes complicated, and the cost increases. . Since the traveling device C is suspended on the chain K, when the worker moves on the suspension scaffold D attached to the traveling device C, the traveling device C swings, and accordingly, the suspension scaffold D also swings. It is difficult to work because it moves. . In order to ensure the safety of the work, the chain K must be made thick and have excellent strength, which increases the cost and the size of the mechanism.

[0005]

[Means for Solving the Problems]

 An object of the present invention is to provide a waterproofing sheet stretching apparatus for a tunnel construction, which has a simple structure, is low in cost, and is excellent in safety.

In the first invention of the present application, the moving body 1 is provided on the moving body 1 by being driven by the driving body 2 to move on the guide rail 4 of the bogie 3 installed in the tunnel in the circumferential direction of the tunnel. An operation of stretching the waterproof sheet 6 in the circumferential direction on an inner wall surface 7 such as a tunnel or a segment provided inside the tunnel by a waterproof sheet stretching mechanism 5 and fixing the waterproof sheet 6 to the moving body 1 on the inner wall surface 7 In the waterproofing sheet stretching apparatus for tunnel construction provided with a worktable 8 on which a rider can ride, the movable body 1 can be engaged / released with the guide rail 4 and guides the movable body 1 when locked. A moving body lock 9 that can be fixed to the rail 4 is provided. The driving body 2 is capable of being locked and released by the guide rail 4 and is capable of fixing the driving body 2 to the guide rail 4 when locked. A locking device 10 is provided The moving body locking tool 9 and the driving body locking tool 10 can be locked and released individually.

In the second invention of the present application, the moving body 1 is provided on the moving body 1 by being driven by the driving body 2 to move in the circumferential direction of the tunnel on the guide rail 4 of the bogie 3 provided in the tunnel. An operation of stretching the waterproof sheet 6 in the circumferential direction on an inner wall surface 7 such as a tunnel or a segment provided inside the tunnel by a waterproof sheet stretching mechanism 5 and fixing the waterproof sheet 6 to the moving body 1 on the inner wall surface 7 In the waterproofing sheet stretching apparatus for tunnel construction provided with a worktable 8 on which a rider can ride, the movable body 1 can be engaged / released with the guide rail 4 and guides the movable body 1 when locked. A moving body lock 9 that can be fixed to the rail 4 is provided. The driving body 2 is capable of being locked and released by the guide rail 4 and is capable of fixing the driving body 2 to the guide rail 4 when locked. A locking device 10 is provided The moving body 1 is driven by the driving body 2 locked and fixed to the guide rail 4 and moved on the guide rail 4 in a state where the locking of the moving body 1 to the guide rail 4 by the moving body locking tool 9 is released. In this state, the driving body locking member 10 is unlocked by the guide rail 4, and is driven by the driving body 2 to be locked and fixed to the guide rail 4 by the moving body locking member 9. The moving body 1 approaches or moves away from the moving body 1.

A third invention of the present application relates to a structure in which a moving body locking detector 11 for detecting locking of the moving body locking tool 9 to the guide rail 4 and a driving body locking tool 10 to the guide rail 4. A driving body locking detector 12 for detecting stop is provided, and if the one detecting body 11 or 12 does not detect the locking of the one locking tool 9 or 10, the other locking tool 10 or 9 is stopped. The lock is not released.

In the fourth invention of the present application, two or more moving body locking detectors 11 are provided in the moving body locking tool 9, and two or more driving body locking detecting bodies 12 are provided in the driving body locking tool 10. If the two or more moving body locking detectors 11 do not detect the locking of the moving body locking tool 9 to the guide rail 4, the locking of the driving body locking tool 10 to the guide rail 4 is released. However, if all of the two or more driving body locking detectors 12 do not detect the locking of the driving body locking tool 10 on the guide rail 4, the moving body locking tool 9 will be locked on the guide rail 4. Is not canceled.

A fifth invention of the present application is to push the work table 8 toward the inner wall surface 7 such as a tunnel or a segment, or to pull the work table 8 back toward the guide rail 4 so that the work table 8 can be moved between the work table 8 and the inner wall surface 7. Is provided with an interval adjuster 13 for adjusting the distance between the two.

In a sixth invention of the present application, the waterproof sheet stretching mechanism 5 supports a waterproof sheet roll 60 formed by winding the waterproof sheet 6 in a roll shape, and a rotatably supported support 61, and the support 61 supports the waterproof sheet roll 60. A folding tool 63 for folding the waterproof sheet 6 drawn from the waterproof sheet roll 60 to the inner wall surface 7 side of the tunnel, and attaching the waterproof sheet 6 folded by the folding sheet 63 to the inner wall surface 7 side of the tunnel. It is provided with a pusher 62 that projects.

[0012]

First Embodiment of the Invention A first example of an embodiment of a waterproofing sheet stretching device for tunnel construction according to the present invention will be described in detail with reference to FIGS. 1 to 6. The figures shown in these figures are examples in which a waterproof sheet 6 is stretched on the inner wall surface 7 of the tunnel. 1 is a bogie 3 movable in the axial direction (depth direction) of the tunnel, a guide rail 4 provided on the bogie 3, and a movable rail on the guide rail 4. A movable body 1, a waterproof sheet stretching mechanism 5 provided on the movable body 1, a worktable 8 rotatably attached to the inner wall surface 7 side and the guide rail 4 side of the tunnel on the movable body 1, And a driving body 2 for moving the moving body 1 along the guide rail 4.

As shown in FIG. 2, the bogie 3 is composed of two portal frame members 14 as shown in FIG. 1, which are spaced apart in front and rear in the axial direction of the tunnel so as to face each other. As shown in FIG. 2, the lower end is connected by a lower end connecting member 16, the lower end is connected by a lower end connecting member 16, and the upper and lower connecting members 15, 16 are connected by a reinforcing member 17 arranged obliquely therebetween. Running wheels 18 are respectively attached below both ends in the longitudinal direction of the lower connecting member 16 so that each running wheel 18 can run on a rail 19 laid along the axial direction at the bottom of the tunnel. It is. One of the running wheels 18 is provided with a drive mechanism 20 as shown in FIG. As shown in FIG. 1, the driving mechanism 20 includes a motor 21, a pulley 22 for transmitting the driving force of the motor 21 to the traveling wheels 18, and a transmission belt 23. The rotation of the motor 21 is controlled by the pulleys 22 and The traveling wheel 18 is transmitted to the traveling wheel 18 by the transmission belt 23 to rotate the traveling wheel 18, and the carriage 3 is moved along the rail 19 in the axial direction of the tunnel. Rail clamps 24 for holding the rails 19 from both sides are attached to the running wheels 18 on which the driving mechanism 20 is not provided, as shown in FIG. After being moved to the place where the waterproof sheet 6 is stretched, the bogie 3 is fixed at that position so that the bogie 3 does not move during the work.

As shown in FIG. 1, two elongated bar-shaped joint members 26 projecting toward the inner wall surface 7 side of the tunnel are provided on the outer sides of the legs 25 on both sides of the front and rear portal frames 14 respectively. Similar joint members 26 are protruded above the cross members 27 of the gate frame member 14, and the distal end of each joint member 26 has a tunnel end as shown in FIGS. An arcuate guide rail 4 formed in an arch shape is attached along the inner wall surface 7. As shown in FIGS. 4 and 5 (a) and (b), the guide rail 4 is formed with an upper plate 28, a vertical plate 29, and a lower plate 30 narrower than the upper plate 28 into an H-shaped steel shape. A steel material is used, and insertion holes 31 are opened in the longitudinal direction at regular intervals on both sides in the width direction of the upper plate 28 as shown in FIG.

As shown in FIG. 3, the moving body 1 has roller mounting plates 32 projecting downward at front and rear ends of both sides in the width direction of the plate-shaped base material 30, and the inside of each roller mounting plate 32. The upper support roller 33 and the lower support roller 34 are rotatably supported above and below, respectively, and the upper plate 28 of the guide rail 4 is sandwiched between the upper support roller 33 and the lower support roller 34 from above and below. 4 is movable.

In front of the moving body 1 (on the left side in FIG. 3), a moving body locking member 9 capable of locking and releasing the moving body 1 to and from the guide rail 4 is connected. Specifically, as shown in FIG. 3, one end of the connector 36 is rotatably fixed to the rear connecting plate 35 of the moving body locking tool 9 by a fixing pin, and the other end is fixed to the front connecting plate 37 of the moving body 1. The movable body 1 and the movable body locking tool 9 are connected by a pivot pin so as to be rotatable.

As shown in FIGS. 1 and 4, the moving body locking device 9 has a hydraulic cylinder 39 erected at the center of the upper surface of a box-shaped housing 38 having a downward opening, and is shown in FIGS. 4 and 5 (a). As described above, a board 41 is attached to the end of the rod 40, and two locking pins 42 are protruded in parallel on the lower surface on both sides in the width direction of the board 41, and when the rod 40 of the hydraulic cylinder 39 is lowered, 2 The locking pin 42 descends and is inserted into the insertion hole 31 of the guide rail 4 so that the moving body locking tool 9 is locked and fixed to the guide rail 4 and connected to the moving body locking tool 9. The moving body 1 is fixed to the guide rail 4. When the rod 40 of the hydraulic cylinder 39 is pulled up and the locking pin 42 is pulled out from the insertion hole 31, the locking to the guide rail 4 is released and the movable body 1 is in a free state in which it can move on the guide rail 4. Become. The movable body locking detector 11 is provided on the substrate 41 as shown in FIG. A proximity switch is used for the movable body locking detector 11, and when the board 41 is lowered and the locking pin 42 is inserted into the insertion hole 31 to a predetermined position, the moving body locking detector 11 is activated. When the upper plate 28 of the guide rail 4 approaches, it is possible to detect that the moving body locking tool 9 is securely locked to the guide rail 4. The proximity switch can be a limit switch, a pressure-sensitive switch, or the like.

As shown in FIGS. 4 and 5 (a), the upper axle 44 penetrates through the front end side and the rear end side of the both side surfaces 43 of the casing 38 of the moving body locking tool 9, respectively. An upper roller 45 is rotatably mounted at the center of the upper axle 44 in the longitudinal direction of the upper axle 44, and a lower axle 46 is provided on the both side surfaces 43 below and below the upper axle 44 in parallel with the upper axle 44. A lower roller 47 is rotatably attached to the inner end, and is sandwiched between the upper plate 28 of the guide rail 4 by the lower roller 47 and the upper roller 45 from above and below, and runs along the upper plate 28 of the guide rail 4. It is possible. As shown in FIGS. 4 and 5B, a side roller 48 is mounted in front of the housing 38. The side rollers 48 are attached to the axle 50 projecting downward from a holding member 49 projecting forward of the housing 38, and the outer peripheral surface of each side roller 48 is formed on the upper plate 28 of the guide rail 4. The upper surface 28 of the guide rail 4 is sandwiched from both outer sides by contacting the outer side surface. The upper plate 28 is pinched from three sides by the pinching of the upper plate 28 from both sides by the side rollers 48 and the pinching of the upper plate 28 by the upper roller 45 and the lower roller 47 from above and below. The body lock 9 can stably travel on the upper plate 28.

A driving body 2 for moving the moving body 1 along the guide rail 4 is connected to the rear of the moving body 1 (right side in FIG. 3). The driving body 2 uses a driving hydraulic cylinder. The driving hydraulic cylinder has a rod 51 whose tip end is rotatably fixed to a rod connecting plate 52 connected to the driving body fixing member 10 by a fixing pin, and a rear end of the hydraulic cylinder is located behind the moving body 1. Is rotatably fixed to a moving body connecting plate 53 provided continuously with a lock pin. The driving body locking tool 10 has the same structure as the moving body locking tool 9 and is provided with a driving body locking detection body 12 similar to the moving body locking detection body 11. The locking of the tool 10 to the guide rail 4 can be detected.

The moving body 1 is provided with a waterproof sheet stretching mechanism 5 for stretching the waterproof sheet 6 on the inner wall surface 7 of the tunnel. The waterproof sheet stretching mechanism 5 is a waterproof sheet roll formed by winding an existing waterproof sheet 6 having a width of about 1.5 m to 2 m or a newly developed wide waterproof sheet 6 having a width of about 6 m around a rod-shaped core material 59. A support member 61 rotatably supporting the support member 60; a pusher 62 for projecting the waterproof sheet 6 drawn from the waterproof sheet roll 60 supported by the support member 61 toward the inner wall surface 7 of the tunnel; 6 comprises a folding tool 63 for turning the waterproof sheet 6 on the inner wall surface 7 of the tunnel with the back surface (stretching surface) of the waterproof sheet 6 facing the inner wall surface 7 of the tunnel.

As shown in FIG. 3, the support member 61 rotatably supports the core member 59 of the waterproof sheet roll 60 on the top end side of the moving body 1 (left side in FIGS. 1 and 3), and on the end of an elongated plate material. An arm 65 having a supporting portion 64 formed thereon is erected in the direction of the inner wall surface 7 of the tunnel.

The pusher 62 is provided on the upper surface of the moving body 1 behind the support 61 and a hydraulic cylinder is erected in the same direction as the support 61, and an idler 66 is rotatably attached to the tip of the rod. The waterproof sheet 6 supplied from the waterproof sheet roll 60 supported by the support portion 64 to the folding tool 63 projects in the direction of the inner wall surface 7 of the tunnel, and the waterproof sheet 6 comes into contact with the folding tool 63. This is to prevent damage. It is not always necessary to provide the pusher 62, and even if it is provided, the waterproof sheet 6 may be provided so as to protrude toward the inner wall surface 7 of the tunnel so that the supplied waterproof sheet 6 does not contact the folding tool 63. The waterproof sheet 6 does not have to be extended to the extent that it comes into contact with the waterproof sheet 6 after installation. The hydraulic cylinder may be a turnbuckle, an electric screw type (screw type) jack, or the like.

The folding tool 63 is formed by attaching a reversing roller 67 to the tip of a turnbuckle 75 projecting obliquely upward from the moving body 1. The waterproof sheet 6 pulled out from the waterproof sheet roll 60 is turned over by the reversing roller 67. Then, the waterproof sheet 6 is folded back to the inner wall surface 7 side of the tunnel so that the back surface (stretched surface) of the waterproof sheet 6 faces the inner wall surface 7 side of the tunnel and is stretched on the inner wall surface 7 of the tunnel. By changing the length of the turnbuckle 75, the length of the folding tool 63 can be changed according to the distance between the guide rail 4 and the inner wall surface 7 of the tunnel. However, the turnbuckle 66 may be a hydraulic cylinder other than the turnbuckle 75, an electric screw type (screw type) jack, or the like as long as the length can be adjusted.

A work table 8 is provided behind the moving body 1 (right side in FIGS. 1 and 3). As shown in FIGS. 2 and 3, the worktable 8 is a basket having an upper opening having a size that allows several workers to ride at one time, and is provided on the upper surface of the moving body 1 on the inner wall surface 7 side of the tunnel. And are rotatably mounted on the guide rail 4 side. Specifically, as shown in FIG. 3, one end of a workbench support arm 68 is rotatably attached to the upper surface of the movable body 1 behind the pusher 62 by a locking pin, and slides on the other end. By attaching the work table 8 via a clutch (not shown), the work table 8 can be turned to the inner wall surface 7 side of the tunnel and to the guide rail 4 side. The floor of the worktable 8 is always kept substantially horizontal even if it moves. The mounting end of the workbench support arm 68 to the workbench 8 is connected to the upper surface of the moving body 1 via the spacing adjuster 13. A turn buckle is used for the spacing adjuster 13. When the entire length of the turn buckle is extended, the workbench support arm 68 rotates in the direction of arrow c in FIG. When the turnbuckle is shortened, the worktable support arm 68 rotates in the direction of arrow d, and the worktable 8 is pulled back to the guide rail 4 side. This turnbuckle may be a hydraulic cylinder, an electric screw type (screw type) jack or the like as long as its length can be adjusted.

Next, the operation of the waterproofing sheet stretching apparatus for tunnel construction according to the above embodiment will be described by taking as an example a case where the apparatus moves on the guide rail 4 from the lower left to the lower right in FIGS. The locking pin 42 (FIGS. 4 and 5a) of the moving body locking tool 9 shown in FIGS. 1 and 3 is inserted into the insertion hole 31 of the guide rail 4 to lock and fix the moving body 1 to the guide rail 4. 1, the locking pin 42 (FIGS. 4 and 5a) of the driving body locking tool 10 is pulled out from the insertion hole 31 of the guide rail 4, and the locking of the driving body 2 to the guide rail 4 is released. In the free state, the rod 51 (FIG. 3) of the driving hydraulic cylinder used as the driving body 2 is pushed out, and the driving body locking tool 10 is moved to the right side in FIGS. At that position, the locking pin 42 of the driving body locking tool 9 is inserted into the insertion hole 31 of the guide rail 4 to lock and fix the driving body 2, and then the locking pin 42 of the moving body locking tool 9. Is pulled out from the insertion hole 31 of the guide rail 4 to release the locking of the moving body 1 and then the rod 51 of the hydraulic cylinder for driving is pulled back. Since the hydraulic cylinder for driving is fixed to the guide rail 4, The moving body 1 moves on the guide rail 4 to the right in FIG. Next, the locking pin 42 of the moving body locking tool 9 is inserted into the insertion hole 31 of the guide rail 4 and locked and fixed to the guide rail 4, and the locking pin 42 of the driving body locking tool 10 is fixed to the guide rail 4. Pull out from the insertion hole 31 of FIG. 4 to release the lock, and then push the rod 51 of the hydraulic cylinder for driving to the right side in FIGS. Hereinafter, the moving body 1 can be intermittently moved from the left end to the right end of the guide rail 4 by sequentially repeating these series of operations. In addition, by performing the reverse operation, the moving body 1 can be intermittently moved from the right end to the left end of the guide rail 4.

These operations are controlled by a hydraulic unit 54 (FIG. 2) installed on the work table 8, and the hydraulic unit 54 is operated by a worker on the work table 8 as desired. The moving body 1 can be moved. In the control unit of the hydraulic unit 54, if one of the moving body locking detector 11 and the driving body locking detector 12 does not detect the locking of one of the locking tools 9 or 10, the other side. The locking of the locking tools 10 or 9 is programmed so as not to be released, and even if the operator performs an operation excessively, the locking of the locking tools 9 and 10 on the guide rail 4 is simultaneously released and the moving body is released. 1 is prevented from slipping. A plurality of the movable body locking detectors 11 or the plurality of driving body locking detectors 12 may be provided for one moving body locking member 9 or one driving body locking member 10, so that the safety can be multiply improved.

[0027]

【Example of use】

 An example of the use of the waterproofing sheet stretching device for tunnel construction of the present invention is shown in FIG. 1 by moving the movable body 1 located at the lower left of the guide rail 4 to the lower right of the guide rail 4. The case where the waterproof sheet 6 is stretched on the inner wall surface 7 will be described as an example. The waterproof sheet 6 is formed by laminating and bonding a resin sheet 56 having substantially the same dimensions to the surface of a nonwoven fabric 55 having a width of several meters and a length of several tens to several tens of meters. The sheets 56 are adhered to each other at portions slightly inside from both ends in the width direction. After the nonwoven fabric 55 side is stretched on the inner wall surface 7 toward the inner wall surface 7 of the tunnel, both ends of the resin sheet 56 not adhered are bonded. Each part is turned over, and a metal thin mounting plate 57 is applied to the surface of the non-woven fabric 55 thereunder, and a tack, a pin or other stopper 58 is driven into the inner wall surface 7 of the tunnel from above. It can be fixed to the inner wall surface 7. . The trolley 3 is moved along the rail 19 in the depth direction of the tunnel, and is installed at the place where the waterproof sheet is installed. . When the trolley 3 is installed in the place where the waterproof sheet is stretched, the resin sheet 56 at the end of the waterproof sheet 6 is turned over, and the mounting piece 57 is applied to the surface of the nonwoven fabric 55 thereunder. The waterproof sheet 6 is fixed to the inner wall surface 7 of the tunnel by driving a stud, a pin or other stopper 58 into the inner wall surface 7 of the tunnel. . Thereafter, the waterproof sheet 6 pulled out from the waterproof sheet roll 60 is attached to the inner wall surface 7 of the tunnel by the folding tool 63 while the moving body 1 is intermittently moved from the lower left to the lower right of the guide rail 4 as described above. A worker riding on the worktable 8 applies mounting pieces 57 at predetermined intervals to the surfaces of the nonwoven cloth 55 at both ends of the waterproof sheet 6 stretched, and applies the mounting pieces 57 to the tunnel with fasteners 58 such as tacks and pins. The waterproof sheet 6 is fixed to the inner wall surface 7 (FIG. 6A), and the waterproof sheet 6 is stretched around the inner wall surface 7 in the circumferential direction. . Next, the moving body 1 that has moved to the lower right of the guide rail 4 is returned to the lower left of the guide rail 4, and then the carriage 3 is moved to the back of the tunnel, and is placed next to the waterproof sheet 6 that was previously stretched. Then, while moving the moving body 1 from the lower left to the lower right of the guide rail 4, the seat 6 is stretched. . Next, while moving the moving body 1 moved to the lower right to the lower left, the worker who got on the work table 8 extended the widthwise end portion 80 of the resin sheet 56 of the waterproof sheet 6 stretched this time to the front. The end portions 80 of the resin sheet 56 are thermally welded to connect the adjacent waterproof sheets 6 (FIG. 6B). . Hereinafter, the above operation is repeated in the depth direction of the tunnel, and the waterproof sheet 6 is stretched over the entire inner wall surface 7 of the tunnel. . Note that the welding work may not be performed each time the waterproof sheet 6 is stretched, but may be performed collectively after stretching the waterproof sheet 6 over the entire inner wall surface 7 of the tunnel. . Further, in the case of the wide waterproof sheet 6, even if only both ends in the width direction are fixed to the inner wall surface 7 of the tunnel as described above, the central portion sags, so that as shown in FIG. Some of the nonwoven fabrics 55 are provided with mounting pieces 57 near the center in the width direction on the back surface at predetermined intervals in the longitudinal direction thereof. In the case of such a waterproof sheet 6, as shown in the figure, the waterproof sheet 6 is folded back by the folding tool 63, and when the mounting piece 57 comes to a position facing the inner wall surface 7 of the tunnel, the work piece 8 The worker fixes the mounting piece 57 to the inner wall surface 7 of the tunnel with a fastener 58 such as a tack or a pin. At this time, both ends in the width direction of the waterproof sheet 6 are fixed to the inner wall surface 7 of the tunnel in the same manner as described above.

[0028]

Second Embodiment of the Invention A second embodiment of the waterproof sheet stretching apparatus of the present invention will be described with reference to FIG. The basic configuration of the waterproof sheet stretching apparatus of the present embodiment is the same as that shown in FIG. The difference lies in the structure of the hydraulic cylinder 39 in the moving body locking tool 9 and the driving body locking tool 10. That is, the spring 70 is disposed in the hydraulic cylinder 39 as shown in FIG. 7 and the rod 40 is constantly urged in the direction of the arrow a, the tank-side valve 72 is closed, and the pump-side valve 73 is closed. When the oil is injected into the cylinder 69 by the hydraulic pump P, the rod 40 is pushed up in the direction of the arrow b against the spring 70 by the pressure, and the locking pin 42 (not shown) at the tip of the rod 40 is guided by the guide rail. 4 is pulled out of the insertion hole 31 to release the lock, the pump-side valve 73 is closed, and the tank-side valve 72 is opened. The oil injected into the cylinder 69 is discharged to the tank 74 and The pressure is reduced, and the rod 40 is lowered in the direction of arrow a by the restoring force of the spring 70. By doing so, the rod 40 is normally lowered in the direction of arrow a, so that the locking pin 42 attached to the end thereof is always pressed against the upper plate 28 of the guide rail 4, and the insertion hole 31 When it comes to the position, it is automatically inserted into the insertion hole 31 and locked, and the locking of the locking pin 42 is not released unless the operator operates the hydraulic pump P and the valves 72 and 73 consciously. And safety is further improved. The oil discharged to the tank 74 is returned to the hydraulic pump P through a flow path (not shown).

[0029]

[Other embodiments of the invention]

 Instead of the insertion hole 31, the guide rail 4 may be provided with a notch groove on the side surface of the upper plate 28 of the guide rail 4 at which a locking pin 42 can be locked at a predetermined interval. The arrangement intervals of the insertion hole 31 and the notch groove are substantially the same as the stroke of the driving hydraulic cylinder 49 of the driving body 2. The connection between the moving body 1 and the moving body locking member 9 may be performed not by the connector 36 but by a driving hydraulic cylinder similar to the driving body 2, a turnbuckle other than this, an electric screw type (screw type) jack or the like. it can.

[0030]

[Effect of the invention]

 The first device of the present application has the following effects. . The structure is simpler than the conventional waterproof sheet stretching device for tunnel construction, and the cost can be kept low. . The simple structure reduces the risk of mechanical failure.

The second device of the present application has the following effects in addition to the above effects. . Since one of the moving body locking tool 9 and the driving body locking tool 10 is always locked to the guide rail 4, the moving body 1 does not slide down and the safety is high.

The third device of the present application has the following effects in addition to the above effects. . A moving body locking detector 11 for detecting locking of the moving body locking tool 9 to the guide rail 4 and a driving body locking detecting body for detecting locking of the driving body locking tool 10 to the guide rail 4. 12 is provided so that the lock of the other lock 10 or 9 is not released unless one of the detectors 11 or 12 detects the lock of the lock 9 or 10. The locking of both locking members 9, 10 is not released at the same time due to an erroneous operation, and the safety is further improved.

The fourth device of the present application has the following effects in addition to the above effects. . Two or more moving body locking detectors 11 are provided on the moving body locking tool 9, and two or more driving body locking detecting bodies 12 are provided on the driving body locking tool 10. Does not detect the locking of the locking member 9 or 10 so that the locking of the other locking member 10 or 9 cannot be released. Even when the detection is performed, the locking of the locking tool 9 or 10 is not released, so that the safety is significantly improved.

The fifth invention of the present application has the following effects in addition to the above effects. . Since the interval adjuster 13 that can adjust the position of the worktable 8 is provided, the distance between the worktable 8 and the inner wall surface 7 of the tunnel can always be maintained at a distance where the work is most easily performed.

The sixth device of the present application has the following effects in addition to the above effects. . The waterproof sheet stretching mechanism 5 is provided with a folding tool 63 for turning the waterproof sheet 6 pulled out from the waterproof sheet roll 60 toward the inner wall surface 7 of the tunnel and directing the stretching surface to the inner wall surface 7 of the tunnel. Therefore, there is no need for the operator to turn the waterproof sheet 6, so that the burden on the operator is reduced and the work efficiency is improved. . Since the pusher 62 for extending the waterproof sheet 6 to the inner wall surface 7 side of the tunnel is provided, the waterproof sheet 6 before being stretched out from the waterproof sheet roll 60 may be damaged by contacting the folding tool 63 and others. Absent.

[Brief description of the drawings]

FIG. 1 is a plan view showing an example of an embodiment of a waterproof sheet stretching apparatus of the present invention.

FIG. 2 is a side view showing an example of an embodiment of the waterproof sheet stretching apparatus of the present invention.

FIG. 3 is a side view showing an example of a waterproof sheet stretching mechanism 5.

FIG. 4 is an explanatory view showing a structure of a moving body locking tool 9 and a driving body locking tool 10.

FIGS. 5A and 5B are explanatory views showing the structures of a moving body locking tool 9 and a driving body locking tool 10. FIG.

FIGS. 6A and 6B are partial cross-sectional views showing different examples of a state where a waterproof sheet is stretched.

FIG. 7 is an explanatory view showing a second embodiment of the waterproof sheet stretching apparatus of the present invention.

FIG. 8 is a plan view showing a conventional waterproof sheet stretching apparatus.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 moving body 2 driving body 3 carriage 4 guide rail 5 waterproof sheet stretching mechanism 6 waterproof sheet 7 inner wall surface of tunnel or inner wall of segment 8 work table 9 moving body locking tool 10 driving body locking tool 11 moving body locking Detecting body 12 Drive body locking detecting body 13 Interval adjustment tool 60 Waterproof sheet roll 61 Support tool 62 Push tool 63 Folding tool

 ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Isao Kodama Inside C-I Chemical Co., Ltd.

Claims (6)

[Utility model registration claims] A moving body (1) is driven by a driving body (2) to move in a circumferential direction of a tunnel on a guide rail (4) of a bogie (3) provided in the tunnel, thereby moving the moving body (1). )
A waterproof sheet (6) is stretched in the circumferential direction on an inner wall surface (7) of a tunnel or a segment provided inside the tunnel by a waterproof sheet stretching mechanism (5) provided on the moving body (1).
And a workbench (8) on which an operator fixing the waterproof sheet (6) to the inner wall surface (7) can be mounted. Is provided with a moving body locking tool (9) which can be locked and released by the guide rail (4) and can fix the moving body (1) to the guide rail (4) when locked. ) Is provided with a driving body locking tool (10) which can be locked and released by the guide rail (4) and can fix the driving body (2) to the guide rail (4) when locked. The waterproofing sheet stretching device for tunnel construction, wherein the stopper (9) and the driving body stopper (10) can be individually locked and released. 2. A moving body (1) driven by a driving body (2) to move on a guide rail (4) of a bogie (3) provided in the tunnel in a circumferential direction of the tunnel, and move the moving body (1). )
A waterproof sheet (6) is stretched in the circumferential direction on an inner wall surface (7) of a tunnel or a segment provided inside the tunnel by a waterproof sheet stretching mechanism (5) provided on the moving body (1).
And a workbench (8) on which an operator fixing the waterproof sheet (6) to the inner wall surface (7) can be mounted. Is provided with a moving body locking tool (9) which can be locked and released by the guide rail (4) and can fix the moving body (1) to the guide rail (4) when locked. ) Is provided with a driving body locking tool (10) which can be locked and released by the guide rail (4) and can fix the driving body (2) to the guide rail (4) when locked. 1)
Is driven by a driving body (2) locked and fixed to the guide rail (4) in a state where the locking to the guide rail (4) by the moving body locking tool (9) is released. 4) The driver (2) is moved upward, and the driver lock (10) is released from being locked to the guide rail (4).
Characterized in that the tunnel is moved closer to or away from the moving body (1), which is driven and driven by the moving body locking tool (9) and is fixedly fixed to the guide rail (4). Construction waterproofing sheet stretching equipment. 3. A moving body locking detector (11) for detecting locking of a moving body locking tool (9) to a guide rail (4);
A driving body locking detector (12) for detecting the locking of the driving body locking tool (10) to the guide rail (4) is provided, and the one of the detecting bodies (11) or (12) is connected to the one of the engagement members. Stopper (9)
Or, if the lock of (10) is not detected, the other lock (1)
The waterproofing sheet stretching apparatus for tunnel construction according to claim 1 or 2, wherein the lock of (0) or (9) is not released. 4. A moving body locking member (9) provided with two or more moving body locking detectors (11), and a driving body locking member (10) having two or more driving body locking detecting members (12). If all of the two or more moving body locking detectors (11) do not detect the locking of the moving body locking tool (9) to the guide rail (4), the driving body locking tool (10) The lock on the guide rail (4) is not released,
If all of the two or more driving body locking detectors (12) do not detect the locking of the driving body locking tool (10) to the guide rail (4), the guide rails (9) of the moving body locking tool (9). 4. The waterproofing sheet stretching device for tunnel construction according to claim 3, wherein the lock to 4) is not released. 5. The work table (8) is pushed toward the inner wall surface (7) of a tunnel, a segment, or the like, or is pulled back toward the guide rail (4), so that the work table (8) is connected to the inner wall surface (7). The waterproof sheet stretching apparatus for tunnel work according to claim 1, further comprising an interval adjuster (13) for adjusting a distance between the waterproof sheet and the tunnel. 6. A waterproof sheet stretching mechanism (5) comprising a waterproof sheet roll (6) formed by winding a waterproof sheet (6) into a roll.
0), and a waterproof sheet roll (60) supported by the support (61).
(63) that folds the waterproof sheet (6) drawn out from the inner wall side (7) of the tunnel, and the foldback (63)
6. A waterproofing sheet for tunnel construction according to claim 1, further comprising a pusher (62) for projecting the waterproof sheet (6) folded back toward the inner wall surface (7) of the tunnel. Stretching equipment.