JP3389495B2 - Waterproof sheet stretching equipment for tunnel construction - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tunnel construction in which a waterproof sheet is stretched on an inner wall surface of a primary lining concrete lined on an excavation surface in a tunnel construction or an inner wall surface of a segment arranged inside the excavation surface. The present invention relates to a waterproof sheet tensioning device.

[0002]

2. Description of the Related Art In tunnel construction, rock is excavated by an excavator, a primary lining concrete is sprayed on the excavated surface, and a waterproof sheet is stretched on the inner wall surface of the primary lining concrete in the circumferential direction. Arch concrete is placed inside the tarpaulin. In addition, a waterproof sheet may be stretched in the circumferential direction on the inner wall surface of the segment arranged inside the excavated surface of the tunnel, and arch concrete may be placed inside the waterproof sheet. Conventionally, in order to stretch a tarpaulin, a scaffold is built in a tunnel, and an operator rides on the scaffold and manually stretches the tarpaulin in the circumferential direction of the inner wall surface of the tunnel or segment to attach tacks or pins. After driving in and fixing and finishing the work at that place, disassemble the scaffolding once, reassemble the scaffolding at the next work place, put the waterproof sheet next to the waterproof sheet that was stretched last time, and fix it as in the previous time. 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, such a manual stretching of the waterproof sheet is inefficient in working because the scaffolding is repeatedly assembled and disassembled as described above.

Therefore, the present inventor previously developed a waterproof sheet tensioning device for tunnel construction as shown in FIG. 10 and applied for a patent (Japanese Patent Application No. 58-121576). This tensioning device is patented as Japanese Patent No. 1,602,575. This waterproof sheet tensioning device for tunnel construction includes a carriage A traveling in the tunnel, an arcuate guide member B equipped on the carriage A, and a reciprocating movement along the guide member B by its drive mechanism, as shown in FIG. A traveling device C that is capable of traveling, a suspension scaffold D that is rotatably attached to the traveling device C so that the floor is always held horizontally, and a waterproof sheet pull-out mechanism E equipped on the traveling device C. While the traveling device C is traveling along the guide member B, the waterproof sheet F is pulled out from the sheet material wound in a roll by the waterproof sheet pulling-out mechanism E, and the pulled-out waterproof sheet F is described above. An operator on the suspension scaffold D can be fixed to the inner wall surface of the primary lining concrete with tacks or pins.

[0004]

The waterproof sheet tensioning device shown in FIG. 10 can sufficiently function with this, and there is no particular problem, but if forcedly cited, there were the following problems. ．
The drive mechanism for traveling the traveling device C is a gear motor H in which drive sprockets G are attached to both ends of the rotary shaft.
And a set of 12 driven sprockets J rotatably attached to each of the two guide members B, a drive sprocket G, and a chain K hung on the driven sprocket J. Fixed to traveling device C,
Since the traveling device C can be reciprocated along the guide member B by switching and rotating the gear motor H in the forward direction or the reverse direction,
Since there are many constituent members, the structure becomes complicated and the cost becomes high. ． Since the traveling device C is suspended by the chain K, when the worker moves on the suspension scaffold D attached to the traveling device C, the traveling device C swings, and the suspension scaffold D also swings accordingly. Work is difficult because it does. ． In order to secure the safety of work, it is necessary to make the chain K thick and to have excellent strength, which increases the cost and the size of the mechanism.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a waterproof sheet tensioning device for tunnel construction which has a simple structure, is low in cost, and is excellent in safety.

[0006]

[0007]

The first invention of the present application is a moving body that moves in the circumferential direction of a tunnel on a guide rail of a bogie arranged in the tunnel, and a waterproof sheet is provided in the tunnel or in a segment provided inside the tunnel. A waterproof sheet tensioning device for tunnel construction, comprising a waterproof sheet tensioning mechanism that can be stretched in a circumferential direction on a wall surface, and a work table on which a worker can ride and work is provided on a moving body. ,
The first driving body is provided ahead of the moving direction of the moving body, and the second driving body is provided at the rear side thereof, and the first driving body is provided with the first locking member capable of locking / releasing it on the guide rail. The second driving body is provided with a second locking tool capable of locking / unlocking it on the guide rail, and the first locking tool and the second locking tool can be locked / unlocked separately. .

The second invention of the present application is a moving body that moves in the circumferential direction of a tunnel on a guide rail of a truck arranged in the tunnel, and includes a waterproof sheet inside the tunnel or a segment provided inside the tunnel. A waterproof sheet tensioning device for tunnel construction, comprising a waterproof sheet tensioning mechanism that can be stretched in a circumferential direction on a wall surface, and a work table on which a worker can ride and work is provided on a moving body. ,
The first driving body is provided ahead of the moving direction of the moving body, and the second driving body is provided at the rear side thereof, and the first driving body is provided with the first locking member capable of locking / releasing it on the guide rail. The second driving body is provided with a second locking tool capable of locking / unlocking it on the guide rail, and the moving body is locked and fixed to the guide rail by the first or second locking tool. Alternatively, the second or first locking member is driven by the second driving body to move on the guide rail, and the second or first locking member is driven by the second or first driving body to approach the moving body during movement of the moving body. It is designed to be separated from the moving body.

The third invention of the present application is claim 1 or claim.
The waterproof sheet stretched apparatus for tunnel construction in claim 2 Symbol mounting a first locking detection member for detecting the locking of the first locking means of the guide rails, to guide rails of the second fastener locking Is provided, and if the first or second locking detection body does not detect the locking of the first or second locking tool, the locking of the other locking tool is released. It is something that is not done.

The fourth invention of the present application is the waterproof sheet tensioning device for tunnel construction according to any one of claims 1 to 3 , wherein the workbench is pushed to the inner wall surface side of the tunnel or segment, or An interval adjuster for adjusting the distance between the workbench and the inner wall surface is provided by pulling back to the guide rail side.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first example of the embodiment of the waterproof sheet tensioning device for tunnel construction of the present invention will be described in detail with reference to FIGS. What is shown in these figures is an example in which the waterproof sheet 6 is put on the inner wall surface 7 of the tunnel. Figure 1
The waterproof sheet tensioning device for tunnel construction shown in Fig. 2 is a bogie 3 movable in the axial direction (depth direction) inside the tunnel, a guide rail 4 provided on the bogie 3, and a movable body movable on the guide rail 4. 1, a waterproof sheet tensioning mechanism 5 provided on the moving body 1, and a work table 8 rotatably attached to the moving body 1 on the inner wall surface 7 side of the tunnel and the guide rail 4 side.
And a driving body 2 for moving the moving body 1 along the guide rails 4.

As shown in FIG. 2, the trolley 3 is provided with two portal frame members 14 as shown in FIG. As shown in FIG. 2, rod-shaped upper connecting members 15 are connected, and lower ends are connected by lower connecting members 16.
6 are connected by a reinforcing member 17 arranged obliquely between them, and traveling wheels 18 are attached below both ends in the longitudinal direction of the two lower connecting members 16 on the left and right, and each traveling wheel 18 has its axis at the bottom of the tunnel. Rail 19 laid along the direction
It is designed to be able to run on. One of the traveling wheels 18 is provided with a drive mechanism 20 as shown in FIG. This drive mechanism 20 has a motor 21 as shown in FIG.
And a pulley 22 and a transmission belt 23 for transmitting the driving force of the motor 21 to the traveling wheels 18, and the rotation of the motor 21 is the pulley 22 and the transmission belt 2.
The vehicle 3 is transmitted to the traveling wheels 18 by means of 3 to rotate the traveling wheels 18, and the carriage 3 is moved along the rails 19 in the axial direction of the tunnel. As shown in the figure, rail clamps 24 capable of holding rails 19 from both side surfaces are attached to the traveling wheels 18, and after moving the carriage 3 along the rails 19 to the place where the waterproof sheet 6 is stretched, Same trolley 3
Is fixed to that position so that the carriage 3 does not move during the work.

As shown in FIG. 1, on the outside of each of the legs 25 on both sides of each of the front and rear gate frame members 14, two slender rod-like joint members 26 projecting toward the inner wall surface 7 of the tunnel project vertically. A similar joint member 26 is provided above the cross member 27 of the portal frame member 14, and the front and rear joint members 26 have tip ends of the tunnel as shown in FIGS. 1 and 2. Arc-shaped guide rails 4 formed in an arch shape along the inner wall surface 7 are attached so as to face each other. This guide rail 4 is shown in FIG.
And an upper plate 28 and a vertical plate 2 as shown in FIGS.
9 and a lower plate 30 narrower than the upper plate 28 are used in the form of an H-shaped steel, and the upper plate 28 has a constant widthwise direction on both sides in the width direction as shown in FIG. Insertion holes 31 are opened at intervals.

As shown in FIG. 3, the movable body 1 is a plate-shaped base material 30.
Roller mounting plates 32 projecting downward are provided at the front and rear end portions of both side surfaces in the width direction of the shaft, and upper and lower support rollers 33 and 34 are rotatably provided on the inner and lower sides of the respective roller mounting plates 32. Support the left and right upper support rollers 33
The upper plate 28 of each guide rail 4 facing each other by the lower support roller 34 and the lower support roller 34 is sandwiched from above and below to be movable on the guide rail 4.

At one end of the moving body 1 (on the left side in FIG. 3), a first locking tool 9 capable of locking / releasing the moving body 1 to / from the guide rail 4 is provided.
Are connected. Specifically, as shown in FIG. 3, the connector 3
One end of 6 is rotatably fixed to the rear connecting plate 35 of the first locking member 9 by a stop pin, and the other end is rotatably connected to the front connecting plate 37 of the moving unit 1 by a stop pin. 1 and the first locking device 9 are connected.

As shown in FIGS. 1 and 4, a hydraulic cylinder 39 is erected on the center of the upper surface of a box-shaped casing 38 having a lower opening, as shown in FIGS. 4 and 5A. In this manner, the base plate 41 is attached to the tip of the rod 40, two locking pins 42 are provided in parallel on the lower surfaces on both sides in the width direction of the base plate 41, and when the rod 40 of the hydraulic cylinder 39 is lowered downward, two rods are provided. Locking pin 4
2 descends and is inserted into the insertion hole 31 of the guide rail 4, and the first locking member 9 is locked and fixed to the guide rail 4,
The moving body 1 connected to the first locking tool 9 is fixed to the guide rail 4. When the rod 40 of the hydraulic cylinder 39 is pulled upward 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 becomes a free state in which it can move on the guide rail 4. . Board 41
As shown in FIG. 4, the first lock detection body 11 is provided in the. A proximity switch is used for the first locking detection body 11, the board 41 is lowered, and the locking pin 42 is inserted into the insertion hole 31 to a predetermined position.
When the key approaches the upper plate 28 of the guide rail 4 to a predetermined position, it is possible to detect that the first locking member 9 is locked securely to the guide rail 4 in response to this. The proximity switch may be a limit switch, a pressure sensitive switch, or the like.

As shown in FIGS. 4 and 5 (a), the upper axle 44 is penetrated through the front end side and the rear end side of the both side surfaces 43 of the housing 38 of the first engaging member 9, respectively. An upper roller 45 is rotatably attached to a central portion in the longitudinal direction of the upper axle 44, and a lower axle 46 is provided on both side surfaces 43 below the upper axle 44 in parallel therewith, and an inner end of the lower axle 46 is provided. A lower roller 47 is rotatably attached to the section, and the lower roller 47 and the upper roller 45 sandwich the upper plate 28 of the guide rail 4 from above and below so that the lower roller 47 can travel along the upper plate 28 of the guide rail 4. As shown in FIGS. 4 and 5 (b), a side roller 48 is attached to the front of the casing 38. This side roller 48
Attaches the side rollers 48 to the axle 50 protruding downward from the holding material 49 protruding in front of the housing 38, and the outer peripheral surface of each side roller 48 contacts the outer surface of the upper plate 28 of the guide rail 4. Contact the upper plate 28 of the guide rail 4
Is sandwiched from both outsides. By sandwiching the upper plate 28 from both sides by the side rollers 48 and by sandwiching the upper plate 28 from above and below by the upper roller 45 and the lower roller 47, the upper plate 28 is sandwiched from three sides, and The locking tool 9 is adapted to stably run on the upper plate 28.

A driving body 2 for moving the moving body 1 along the guide rail 4 is connected to the other end (right side in FIG. 3) of the moving body 1. A drive hydraulic cylinder is used for the drive body 2 as shown in FIG. The driving hydraulic cylinder 2 has a rod 51 whose tip is rotatably fixed to a rod connecting plate 52 which is connected to the second locking member 10 by a stop pin, and whose rear end is the moving body 1 It is rotatably fixed to the movable body connecting plate 53, which is continuously provided, by a stop pin. The second stopper 10 is the first stopper 9
A second locking detection body 12 having the same structure as that of the first locking detection body 11 is provided to detect the locking of the second locking tool 10 to the guide rail 4. You can do it.

The moving body 1 is provided with a waterproof sheet tensioning mechanism 5 for tensioning the waterproof sheet 6 on the inner wall surface 7 of the tunnel. This waterproof sheet tensioning mechanism 5 has a width of 1.5 m to 2
Existing waterproof sheet 6 around m and newly developed width 6m
A support 61 for rotatably supporting a waterproof sheet roll 60 formed by winding a wide front and rear waterproof sheet 6 around a rod-shaped core material 59, and a waterproof drawn from the waterproof sheet roll 60 supported by the support 61. The pushing tool 62 that projects the sheet 6 toward the inner wall surface 7 of the tunnel, and the waterproof sheet 6 is folded back so that the back surface (stretched surface) of the waterproof sheet 6 is the inner wall surface 7 of the tunnel.
And a folding tool 63 that stretches the waterproof sheet 6 on the inner wall surface 7 of the tunnel.

As shown in FIG. 3, the support tool 61 rotatably supports the core material 59 of the waterproof sheet roll 60 at the end of the upper surface of the moving body 1 (on the left side of FIGS. 1 and 3) at the tip of the elongated plate material. The arm 65, which forms the supporting portion 64, is erected in the direction of the inner wall surface 7 of the tunnel.

The pusher 62 comprises a hydraulic cylinder standing in the tunnel in the center of the upper surface of the moving body 1 toward the inner wall surface 7, and an idler 66 rotatably attached to the tip of the rod. To prevent the waterproof sheet 6 supplied from the waterproof sheet roll 60 supported by 64 to the folding tool 63 from projecting toward the inner wall surface 7 of the tunnel and contacting the folding tool 63 and damaging the waterproof sheet 6. belongs to. This pushing tool 62 does not necessarily have to be provided,
Further, even when the waterproof sheet 6 is provided, the waterproof sheet 6 may be extended to the inner wall surface 7 side of the tunnel to the extent that the waterproof sheet 6 does not come into contact with the folding tool 63. It is not necessary to overhang the waterproof sheet 6.
The hydraulic cylinder may be a turnbuckle, an electric screw type (screw type) jack, or the like.

The folding tool 63 comprises a turnbuckle 75 projecting obliquely upward from the moving body 1 and a reversing roller 67 attached to the tip of the reversing roller 67. By folding back to the inner wall surface 7 side of the tunnel, the back surface (tension surface) of the waterproof sheet 6 is stretched on the inner wall surface 7 of the tunnel with the rear surface (tension surface) facing the inner wall surface 7 side of the tunnel. By changing the length of the turnbuckle 75, the folding tool 63 can change its entire length according to the distance between the guide rail 4 and the inner wall surface 7 of the tunnel. However, if the turnbuckle 75 can be adjusted in length, the turnbuckle 7
A hydraulic cylinder other than 5, an electric screw type (screw type) jack, or the like may be used.

The upper end of the moving body 1 (right side of FIGS. 1 and 3)
A workbench 8 is attached to the. As shown in FIGS. 2 and 3, the workbench 8 is a basket with an upper opening that allows several workers to ride at once, and a tunnel is formed between two guide rails 4 facing each other. It is suspended from the moving body 1 so as to be rotatable toward the inner wall surface 7 side and 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 moving body 1 behind the pushing tool 62 by a stop pin, and a slip clutch (not shown) is attached to the other end. ), The workbench 8 can be rotated to the inner wall surface 7 side of the tunnel and the guide rail 4 side, and the movable body 1 is moved to the guide rail 4
The floor of the workbench 8 is always kept substantially horizontal regardless of which position it is moved to. Workbench support arm 68
The attachment end of the above to the workbench 8 is connected to the upper surface of the moving body 1 via the space adjusting tool 13. A turnbuckle is used for the gap adjuster 13. When the turnbuckle is extended, the workbench support arm 68 pivots in the direction of arrow c in the figure to move the workbench 8 toward the inner wall surface 7 of the tunnel. When the turnbuckle is pushed out and the total length of the turnbuckle is shortened, the workbench support arm 68 pivots in the direction of arrow d and the workbench 8 is pulled back to the guide rail 4 side. This turnbuckle can also be a hydraulic cylinder, an electric screw type (screw type) jack or the like if the length can be adjusted.

Next, the operation of the waterproof sheet tensioning device for tunnel construction of the above-mentioned embodiment will be described by taking the case of moving on the guide rail 4 from the lower left to the lower right in FIGS.
The locking pin 42 of the first locking device 9 shown in FIGS. 1 and 3 (see FIG. 4,
5a) is inserted into the insertion hole 31 of the guide rail 4 to lock / fix the moving body 1 to the guide rail 4, and the locking pin 42 (FIGS. 4 and 5a) of the second locking tool 10 shown in FIG. ) Is pulled out from the insertion hole 31 of the guide rail 4 to release the locking of the driving hydraulic cylinder 2 to the guide rail 4 to make it free, and the rod 51 (FIG. 3) of the driving hydraulic cylinder 2 is pushed out. (2) The stopper 10 is moved to the right side in FIGS. At that position, the locking pin 42 of the second locking tool 10 is inserted into the insertion hole 31 of the guide rail 4 to lock / fix the drive hydraulic cylinder 2, and then the first locking tool 9 is locked. When the pin 42 is pulled out from the insertion hole 31 of the guide rail 4 to unlock the moving body 1 and then the rod 51 of the drive hydraulic cylinder is pulled back, the drive hydraulic cylinder 2 is fixed to the guide rail 4. Therefore, the moving body 1 moves on the guide rail 4 to the right side in FIG. Next, the first locking device 9
The locking pin 42 of is inserted into the insertion hole 31 of the guide rail 4 and locked and fixed to the guide rail 4, and the second locking tool 10
The locking pin 42 of is pulled out from the insertion hole 31 of the guide rail 4 to release the locking, and then the rod 51 of the driving hydraulic cylinder 2 is pushed out to the right side of FIGS.
Move 0 in the same direction. The mobile body 1 can be intermittently moved from the left end to the right end of the guide rail 4 by sequentially repeating a series of these operations. In addition, the moving body 1 can be intermittently moved from the right end to the left end of the guide rail 4 by performing the operation opposite to the above.

The operation of the drive hydraulic cylinder 2 is controlled by a hydraulic unit 54 (FIG. 2) installed on the workbench 8, and this hydraulic unit 54 should be operated by an operator on the workbench 8. The moving body 1 can be moved as desired. In the control unit of the hydraulic unit 54, if either the first locking detection body 11 or the second locking detection body 12 does not detect the locking of the locking tool 9 or 10, The locking device 10 or 9 is programmed so as not to be unlocked, and even if an operator makes an error, the locking devices 9 and 10 are unlocked from the guide rail 4 at the same time, so that the moving body 1 So that it doesn't slip off. A plurality of first locking detection bodies 11 or second locking detection bodies 12 may be provided for one first locking tool 9 or second locking tool 10 to enhance safety in multiple layers.

[0027]

[Example of use] An example of use of the waterproof sheet tensioning device for tunnel construction according to the present invention is shown in FIG. 1, in which the moving body 1 located at the lower left of the guide rail 4 is moved to the lower right of the guide rail 4. However, a case where the waterproof sheet 6 is stretched on the inner wall surface 7 of the tunnel will be described as an example. The waterproof sheet 6 is formed by laminating and adhering a resin sheet 56 having substantially the same size as the surface of a non-woven fabric 55 having a width of several meters and a length of several tens of meters to several tens of meters. 56 are adhered to each other at a portion slightly inner than both ends in the width direction, and after the nonwoven fabric 55 side is stretched to the inner wall surface 7 of the tunnel,
The widthwise ends of the non-bonded resin sheet 56 are turned over, and a mounting piece 57 made of a thin metal plate is applied to the surface of the non-woven fabric 55 below, and a tack is attached to the inner wall surface 7 of the tunnel from above. When a pin or other stopper 58 is driven in, it can be fixed to the inner wall surface 7. ． The carriage 3 is moved along the rail 19 in the depth direction of the tunnel and installed at the place where the waterproof sheet is stretched. ． When the trolley 3 is installed at 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 attachment piece 57 is applied to the surface of the non-woven fabric 55 under the resin sheet 56.
A stud, a pin or other fastener 58 is driven into the inner wall surface 7 of the tunnel from above 7 to fix the lower end of the waterproof sheet 6 in the longitudinal direction to the inner wall surface 7 of the tunnel. ． After that, move the moving body 1 to the guide rail 4 as described above.
While intermittently moving from the lower left to the lower right, the waterproof sheet 6 pulled out from the waterproof sheet roll 60 is stretched on the inner wall surface 7 of the tunnel by the folding tool 63, and the nonwoven fabrics 55 on both ends in the width direction of the stretched waterproof sheet 6 are stretched. An operator on the workbench 8 applies mounting pieces 57 to the surface of the work piece at a predetermined interval, and fixes the piece 57 to the inner wall surface 7 of the tunnel with a stopper 58 such as a tack or a pin.
(FIG. 6a) The waterproof sheet 6 is stretched on the inner wall surface 7 in the circumferential direction. ． Next, after returning the moving body 1 that has moved to the lower right of the guide rail 4 to the lower left of the guide rail 4, move the carriage 3 to the back of the tunnel and beside the waterproof sheet 6 that was stretched last time, as in the previous time. The waterproof sheet 6 is stretched while moving the moving body 1 from the lower left to the lower right of the guide rail 4. ． Next, while moving the moving body 1 that has moved to the lower right of the guide rail 4 to the lower left of the same guide rail 4, the worker riding on the workbench 8 stretches the resin sheet 56 of the resin sheet 56 of the waterproof sheet 6 stretched this time. The end portion 80 and the end portion 80 of the resin sheet 56 stretched the previous time are heat-welded to connect the adjacent waterproof sheets 6 (FIG. 6b). ． Hereinafter, the above work is repeated in the depth direction of the tunnel to stretch the waterproof sheet 6 on the entire inner wall surface 7 of the tunnel. ． The welding work may not be performed every time the waterproof sheet 6 is stretched, but may be collectively performed after the waterproof sheet 6 is stretched over the entire inner wall surface 7 of the tunnel. ． Further, in the case of a 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 is slackened, and as shown in FIG. Some of the non-woven fabrics 55 are provided with attachment pieces 57 in the vicinity of the center of the back surface of the non-woven fabric 55 in the longitudinal direction at predetermined intervals in advance. 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 the mounting piece 57 comes to a position facing the inner wall surface 7 of the tunnel. An operator fixes the attachment piece 57 to the inner wall surface 7 of the tunnel with a fastener 58 such as a tack or a pin. Also at this time, both widthwise ends 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 A second embodiment of the waterproof sheet tensioning device of the present invention will be described with reference to FIG. The basic configuration of the waterproof sheet tensioning device of this embodiment is the same as that shown in FIG. The only difference is the first locking device 9 and the second locking device 10.
3 is a structure of the hydraulic cylinder 39 in FIG. That is, the hydraulic cylinder 39 is provided with a spring 70 in the cylinder 69 as shown in FIG. 7, the rod 40 is always biased in the direction of arrow a, the tank side valve 72 is closed, and the pump side valve 73 is opened. When oil is injected into the cylinder 69 by the hydraulic pump P, the pressure pushes the rod 40 upward in the direction of arrow b against the spring 70, and the locking pin 42 (not shown) at the tip of the rod 40 is inserted into the guide rail 4. Hole 3
1 is pulled out from 1 to release the lock, and the pump side valve 7
When 3 is closed and the tank side valve 72 is opened, the oil injected into the cylinder 69 is discharged to the tank 74, the pressure inside the cylinder 69 is reduced, and the rod 40 is lowered in the direction of arrow a by the restoring force of the spring 70. I am doing it. By doing so, the rod 40 is normally lowered in the direction of the arrow a, so that the locking pin 42 attached at the tip of the rod 40 is always pressed against the upper plate 28 of the guide rail 4 and the position of the insertion hole 31. Comes into the insertion hole 31 and is locked automatically, unless the operator intentionally operates the hydraulic pump P and the valves 72, 73.
The lock of 2 is not released, and the 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]

Third Embodiment of the Invention A third embodiment of the present invention will be described with reference to FIG. The basic construction of this waterproof sheet tensioning device for tunnel construction is the same as that shown in FIG.
The difference is that the moving body 1 and the first locking device 9 are connected by using a hydraulic cylinder similar to the driving hydraulic cylinder 2 instead of the arm-shaped or plate-shaped connector 36.
The first driving body 2a and the second driving body 2b are provided in the forward direction and the second driving body 2b, respectively. The first driving body 2a is provided with the first locking member 9 and the second driving body 2b is provided with the second engaging member 9. That is, the stoppers 10 are integrally provided.

In the waterproof sheet tensioning device for tunnel construction having the above structure, the moving body 1 moves on the guide rail 4 as follows. ． As shown in FIG. 8A, the locking pin 42 of the first locking device 9
Is inserted into the insertion hole 31 of the guide rail 4 and locked / fixed to the guide rail 4, the locking pin 42 of the second locking device 10 is pulled out from the insertion hole 31 to lock the guide rail 4. The second driving body 2b is released so as to be movable, and the rod 82 of the first driving body 2a is pushed out to move the moving body 1 in the arrow X direction in the figure as shown in FIG. 8B. . At this time, the rod 51 of the second driving body 2b is also pushed out at the same time. When the rod 51 is pushed out, the movable second drive body 2b in the free state moves in the direction of the arrow X by the reaction force, and the second locking tool 10 integrated with this also moves in the same direction. ． Next, as shown in FIG. 8C, the locking pin 42 of the second locking tool 10 is inserted into the insertion hole 31 to lock the guide rail 4 and then the locking pin 42 of the first locking tool 9. 42 for insertion hole 31
It is pulled out from the guide rail 4 to release the lock to the guide rail 4, and the first lock 9 is moved to a free state. ． After that, as shown in FIG. 8D, the rod 51 of the second driving body 2b is pulled back into the cylinder to move (pull) the moving body 1 in the arrow X direction in the drawing. At this time, at the same time, the rod 82 of the first driving body 2a is pulled back into the cylinder. When the rod 82 is pulled back into the cylinder, the movable first drive body 2 a moves in the arrow X direction and approaches the moving body 1. ． Next, when the locking pin 42 of the first locking device 9 is inserted into the insertion hole 31 and locked to the guide rail 4, the initial state shown in FIG. 8A is restored. Therefore, the moving body 1 can be moved on the guide rail 4 substantially continuously by repeating the above-described operation. That is, as shown in FIG. 8B, the second driving body 2b moves forward in the moving direction of the moving body 1 in preparation for the next driving while the first driving body 2a is driving the moving body 1. As shown in FIG. 8D, since the first driving body 2a approaches the moving body 1 in preparation for the next driving while the second driving body 2b is driving the moving body 1, both driving bodies 2a 2b has no unnecessary movement, and the moving body 1 can be moved almost continuously.

[0031]

Other Embodiments of the Invention Instead of the insertion holes 31, the guide rails 4 are provided with notch grooves on the side surfaces of the upper plate 28 of the guide rails 4 at which the locking pins 42 can be locked at regular intervals. Good. The arrangement intervals of the insertion hole 31, the notch groove and the like are substantially the same as the stroke of the drive hydraulic cylinder of the drive body 2. The connection between the moving body 1 and the first locking device 9 is a connector 36.
Instead of this, 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 can be used.

The guide rail 4 can be manufactured by a square pipe 90 as shown in FIG. 9 other than that shown in FIG. In order to manufacture the guide rail 4 with such a square pipe 90, the same square pipe 90 is formed along the inner wall surface 7 of the tunnel in an arch shape as shown in FIG. Steel flat plates 91 each having a width of about 70 mm are integrally provided, and the projection holes 92 on both sides of the flat plate 91 are inserted into the insertion holes 3 at regular intervals along the longitudinal direction.
Open 1. In this guide rail 4, the upper roller 45 and the lower roller 47 of the movable body locking tool 9 sandwich the flat plate 91 from above and below, and the side rollers 48 sandwich the flat plate 91 from both outsides. In this embodiment, the square pipe 90 having a length and width of 150 mm is used, but it may be thicker or thinner than this as long as sufficient strength can be maintained. Since the guide rail 4 manufactured by the square pipe 90 has high strength, it is not necessary to provide the gate form member 14 as shown in FIG. 4, and accordingly, the gate form member 14 is provided.
The joint member 26 for connecting the guide rail 4 and the guide rail 4 is also unnecessary. Therefore, as shown in FIG. 2, it is only necessary to place two tunnels facing each other in the axial front-rear direction so as to face each other, and to connect the lower ends to each other by the lower-stage connecting member 16. A traveling wheel 18 that is driven by a drive mechanism 20 and is capable of traveling on a rail 19 laid along the axial direction at the bottom of the tunnel is provided at both ends of each connecting member, and a rail clamp 24 is provided on each traveling wheel 18. And the carriage 3 between the guide rails 4 facing each other are the same as above.

[0033]

The first and second inventions of the present application have the following effects. ． Compared with the conventional waterproof sheet tensioning device for tunnel construction, the structure is simple and the cost can be kept low. ． Since the structure is simple, there is little risk of mechanical failure.

The first and second inventions of the present application have 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 slip off and the safety is high.

The first and second inventions of the present application have the following effects in addition to the above effects. ． Two driving bodies 2a and 2b are provided, and one driving body 2a
Alternatively, while the other driving body 2b or 2a can prepare for the next driving while the other moving body 2 is driving the moving body 1, the moving body 1 can be moved on the guide rail substantially continuously. It is possible and work efficiency is greatly improved.

The third invention of the present application has the following effects in addition to the above effects. ． A moving body locking detection body 11 that detects locking of the moving body locking tool 9 to the guide rail 4, and a driving body locking detection body 12 that detects locking of the driving body locking tool 10 to the guide rail 4. Is provided, and one of the detection bodies 11 or 12 is the locking tool 9 or 10
Since the locking of the other locking tool 10 or 9 is not released unless the locking of the other locking tool 10 or 9 is detected, the locking of both locking tools 9 and 10 may be released at the same time due to a malfunction or an erroneous operation. No, it is more safe.

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

[Brief description of drawings]

FIG. 1 is a plan view showing an example of an embodiment of a waterproof sheet tensioning device for tunnel construction of the present invention.

FIG. 2 is a side view showing an example of an embodiment of a waterproof sheet tensioning device for tunnel construction of the present invention.

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

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

5 (a) and 5 (b) are explanatory views showing structures of a moving body locking tool 9 and a driving body locking tool 10. FIG.

6A and 6B are partial cross-sectional views showing different examples in which a waterproof sheet is stretched.

FIG. 7 is an explanatory view showing a second embodiment of the waterproof sheet tensioning device for tunnel construction of the present invention.

FIG. 8 is an explanatory view showing a third embodiment of the waterproof sheet tensioning device for tunnel construction of the present invention.

FIG. 9 is an explanatory view showing an example of a guide rail 4.

FIG. 10 is a plan view showing a conventional waterproof sheet tensioning device.

[Explanation of symbols]

1 moving body 2 driver 2a First locking device 2b Second locking device 3 dolly 4 guide rails 5 Waterproof sheet tensioning mechanism 6 tarpaulin 7 Inner wall surface of tunnel or inner wall surface of segment 8 workbench 9 First locking device 10 Second locking device 11 First locking detector 12 Second locking detector 13 Interval adjustment tool

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hitoshi Sumita 1-18-1 Kyobashi, Chuo-ku, Tokyo Shiai Kasei Co., Ltd. (72) Inventor Yuuo Kodama 1-18-1 Kyobashi, Chuo-ku, Tokyo Shiai Kasei Co., Ltd. (56) References JP-A-6-17599 (JP, A) JP-A-8-121093 (JP, A) JP-B-2-27520 (JP, B2) Registered utility model 3050777 (JP, U) (58) ) Fields surveyed (Int.Cl. ⁷ , DB name) E21D 11/38

Claims (4)

(57) [Claims] 1. A moving body (1) that moves in the circumferential direction of a tunnel on a guide rail (4) of a carriage (3) arranged in the tunnel, and a waterproof sheet (6) inside the tunnel or inside the tunnel. A work in which an operator can ride on the moving body (1) to perform work by providing a waterproof sheet tensioning mechanism (5) that can be stretched in the circumferential direction on the inner wall surface (7) of the provided segment or the like. In a waterproof sheet tensioning device for tunnel construction provided with a platform (8), a first driving body (2a) is located ahead of the moving body (1) in the moving direction, and a second driving body (2b) is located behind it.
Are provided respectively, the first driving body (2a) is provided with a first locking tool (9) capable of locking and releasing it on the guide rail (4), and the second driving body (2b) is provided with it. The guide rail (4) is provided with a second locking tool (10) capable of locking and unlocking, and the first locking tool (9) and the second locking tool (10) can be locked and unlocked separately. A waterproof sheet tensioning device for tunnel construction. 2. A moving body (1) that moves in the circumferential direction of a tunnel on a guide rail (4) of a truck (3) arranged in the tunnel, and a waterproof sheet (6) inside the tunnel or inside the tunnel. A work in which an operator can ride on the moving body (1) to perform work by providing a waterproof sheet tensioning mechanism (5) that can be stretched in the circumferential direction on the inner wall surface (7) of the provided segment or the like. In a waterproof sheet tensioning device for tunnel construction provided with a platform (8), a first driving body (2a) is located ahead of the moving body (1) in the moving direction, and a second driving body (2b) is located behind it.
Are provided respectively, the first driving body (2a) is provided with a first locking tool (9) capable of locking and releasing it on the guide rail (4), and the second driving body (2b) is provided with it. The guide rail (4) is provided with a second locking tool (10) capable of locking and releasing the moving body (1), and the moving body (1) has the first or second locking tool (9 or 1).
0) is driven by the first or second driving body (2a or 2b) locked and fixed to the guide rail (4) to move on the guide rail (4), and the second or first locking is performed. The tool (10 or 9) is driven by the second or first driving body (2b or 2a) to move toward or away from the moving body (1) during the movement of the moving body (1). A waterproof sheet tensioning device for tunnel construction, which is characterized by 3. The waterproofing device for tensioning a tunnel according to claim 1 or 2, wherein the first locking detection for detecting locking of the first locking member (9) to the guide rail (4). Body (11)
And a second locking detection body (12) for detecting locking of the second locking tool (10) to the guide rail (4), and the first or second locking detection body (11 or 12). For tunnel construction, wherein the locking of the other locking device (10 or 9) is not released unless the locking of the first or second locking device (9 or 10) is detected. Waterproof sheet tension device. 4. The waterproof sheet stretched apparatus for tunnel construction according to any one of claims 1 to 3, press working table (8) on the inner wall surface (7) side of such tunnel or segment, or Waterproofing for tunnel construction, characterized in that an interval adjuster (13) for adjusting the distance between the workbench (8) and the inner wall surface (7) is provided by pulling back to the guide rail (4) side. Seat tension device.