JPH0227520B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for stretching a waterproof sheet over the surface of a primary lining after a primary lining is performed in tunnel construction.

Conventionally, when installing a waterproof sheet on the surface of the primary lining, first scaffolding was erected inside the tunnel, a worker climbed on the scaffolding, and the worker manually applied the waterproof sheet to the primary lining and surface. Once that work is completed, the scaffolding will be dismantled. Then, at the next installation site, scaffolding is erected again and the tarpaulin sheet is installed. In this way, conventionally, a waterproof sheet is stretched over the surface of the primary lining. For this reason, the work is troublesome and work efficiency is low.

In view of the above-mentioned points, the present invention aims to provide a waterproof sheet stretching device that is easy to work with and has good work efficiency.

In the present invention, a guide member is equipped on a cart running in a tunnel in a shape similar to the cross-sectional shape of the tunnel, a traveling device is engaged with the guide member, and a hanging scaffold is rotatably pivoted to the traveling device. The supporting device is configured to allow the traveling device to reciprocate along the guide member, to maintain the suspended scaffold in a horizontal state at all times, and to enable the waterproof sheet to be stretched over the surface of the primary lining on the suspended scaffold. do.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Two examples of the waterproof sheet stretching apparatus for tunnel construction according to the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a front view showing a first embodiment of the waterproof sheet stretching device of the present invention.

The waterproof sheet stretching device of the present invention in this embodiment includes a trolley 1, a guide member 2, and a traveling device 3.
It consists of a gondola-shaped suspended scaffold 4, a waterproof sheet supply mechanism 5, a waterproof sheet crimping device 6, and a suspended scaffold moving device 7.

The trolley 1 includes two sets of gate-shaped members 10;
A horizontal joint member 11 and a diagonal joint member 12 that connect two sets of gate-shaped members 10 back and forth by fixing both front and rear ends to the gate-shaped members 10 of the set, and a mounting member 13 fixed to the lower end of the gate-shaped member 10. Consisting of A driving wheel 14 and a driven wheel 15 are rotatably supported on the mounting member 13, and a drive motor 16 is mounted on a portion of the mounting member 13 on the driving wheel 14 side.
A power transmission means 17 consisting of a sprocket, a chain, etc. is interposed between the drive wheel 14 and the drive wheel 14. on the other hand,
A rail clamp 18 is attached to the driven wheel 15 side of the attachment member 13. The driving wheel 14 and driven wheel 15 thus formed are engaged with the rail 19 laid in the tunnel, and the rail clamp 18 is clamped to the rail 19. Thus, by driving the drive motor 16, the truck 1 is moved to the rail 1.
9.

The guide member 2 has a shape similar to the cross-sectional shape of the tunnel, that is, a cross-sectional shape similar to and reduced in cross-section of the tunnel (arch shape). This guide member 2 includes a first rail member 21 having a U-shaped cross section.
and a second rail member 22 having an I-shaped cross section.
The first rail member 21 is installed via vertical members 23 and cross members 24, respectively, so that the first rail member 21 is located inside.

The traveling device 3 includes a traveling section 30, a safety device section 31, and a drive section 32. Said running section 30
is an upper member 300, a lower member 301, a vertical member 302 and a diagonal member 303 whose upper and lower ends are fixed between the upper member 300 and the lower member 301, and these two sets of the upper member 300, the lower member 301, and the vertical member 303. member 302,
Two sets of upper member 300, lower member 301, vertical member 302, and diagonal member 3 are fixed to the diagonal member 303 at both front and rear ends.
It consists of a joint member 304 that connects 03 to the front and back. At both ends of the two sets of lower members 301, the first
a first engagement ring 305 that engages with the rail member 21;
a second engagement ring 3 that engages with the second rail member 22;
06 is provided. The safety device section 31 fixes brackets 310 to both ends of the two sets of lower members 301 of the traveling section 30, and attaches two sets of elliptical cams 311 to the brackets 310 using pins.
It is rotatably mounted at a point eccentric from the center of 1.
A first
Both ends of the lever 312 are fixed with pins. One end of the second lever 313 is fixed to the pin to which the first lever 312 of the upper cam 311 of the two cams 311 is attached, and a tension spring is installed between the other end of the second lever 313 and the bracket 310. 314 is inserted. The two cams 311 are opposed to each other so that the upper horizontal part of the second rail member is vertically sandwiched between the two cams 311. When the chain 324 of the drive unit 32 (described later) is pulled in the forward or reverse direction against the spring force of the tension spring 314, the two cams 311 are disengaged from the second rail member 22, and the running unit 30 runs along the guide member 2. on the other hand,
If the chain 324 of the drive unit 32 becomes loose for some reason and the running unit 30 attempts to fall, the spring force of the tension spring 314 causes the two cams 311 to move to the second position.
It rotates via the lever 313 and the first lever 312 and engages with the second rail member 22, and the running section 30
be constructed to prevent it from falling. The drive unit 32 includes a gear motor 320 mounted on the gate-shaped member 10, twelve driven sprockets 321 rotatably attached to the two sets of gate-shaped members 10 and the two sets of guide members 2, and the gear motor 320 A rotating shaft 322 is connected to the rotating shaft 322, and driving sprockets 323 are provided at both ends of the rotating shaft 322, respectively. These two drive sprockets 323 and one set of 12 sprockets 2
Two chains 324 are wound around each of the set of driven sprockets 321, and both ends of these two chains 324 are fixed to the other end of the second lever 313 of the safety device section 31. The gear motor 32
By rotating 0 in the forward or reverse direction,
The traveling section 30 (and the safety device section 31) can be made to travel along the guide member 2. Although the chain 324 and the sprockets 321, 323 have been described in the drive unit 32 described above, other drive mechanisms such as wires and pulleys may be used.

The hanging scaffold 4 includes four long horizontal frame members 40,
Eight short horizontal frame members 41 and six vertical frame members 42
and an appropriate number of round bar members 43 constitute a rectangular parallelepiped-shaped framework, and the two long horizontal frame members 4 of this framework
A floor plate 44 is fixed to zero and six short horizontal frame members 41.

The waterproof sheet supply mechanism 5 is connected to the traveling device 3.
Two rotating shafts 50 are provided at both ends of two sets of upper members 300.
is rotatably supported at both ends by bearings 51, and a roll of a waterproof sheet 52 is fitted around the two rotating shafts 50. This waterproof sheet 52 is a synthetic resin sheet, for example, a polyethylene sheet, and has a thickness of about 1 to 2 mm and a width of 1000 to 1500 mm.

The waterproof sheet crimping device 6 has base ends of four main arms 60 rotatably attached to both ends of the two rotating shafts 50 of the waterproof sheet supply mechanism 5, and four main arms 60 at the tips of the four main arms 60. The base ends of the auxiliary arms 61 are rotatably attached to each other with pins, and a compression coil spring 62 is interposed between the tips of the auxiliary arms 61 and the main arm 60.
1 is always urged in the direction of the arrow, that is, in the direction facing the surface of the primary lining 8 of the tunnel. Both ends of two waterproof sheet pressing rollers 63 are rotatably attached to the tips of these four auxiliary arms 61. Both ends of four hydraulic cylinders 64 are rotatably attached between the tips of the four main arms 60 and the traveling device 3 with pins, and the installation angle of the pressure roller 63 with respect to the traveling device 3, that is, the tunnel It can be adjusted according to the size of the cross-sectional shape.

In the suspended scaffold moving device 7, the bottom sides of two first hydraulic cylinders 71 are attached to the lower ends of the two sets of central vertical members 302 of the traveling device 3. When the main body sides of the two second hydraulic cylinders 72 are fixed to the outside of the two central vertical frame members 42 of the suspended scaffolding 4, both of the two central vertical frame members 4 of the suspended scaffolding 4 are also fixed.
A hanging fitting 70 is slidably inserted into the housing 2 in the longitudinal direction. The tip of the piston rod of the first hydraulic cylinder 71, the tip of the piston rod of the second hydraulic cylinder 72, and the tip of the hanging scaffold 70 are rotatably attached with pins 73, so that the hanging scaffold 4 is always kept horizontal. Configure to maintain That is, the floor plate 44 of the suspended scaffold 4 always maintains a horizontal state with respect to the direction of gravity even when the traveling device 3 travels along the guide member 2, as shown by the solid line and the two-dot chain line in FIG. . In addition, the first
By expanding and contracting the hydraulic cylinder 71, the suspended scaffold 4 can be moved forward and backward in the longitudinal direction of the central vertical member 302 of the traveling device 3. On the other hand, by expanding and contracting the second hydraulic cylinder 72, the suspended scaffold 4 can be moved forward and backward in the longitudinal direction of the central vertical member 302 of the traveling device 3.
can move forward and backward in the direction of gravity.

The waterproof sheet stretching apparatus of the present invention in this embodiment has the above-mentioned configuration, and its operation will be explained below.

First, the trolley 1 is run along the rail 19,
The waterproof sheet tensioning device of the present invention is positioned at the place where the waterproof sheet is to be stretched. Next, the trolley 1 is fixed to the rails 19. Next, the gear motor 320 is driven to cause the traveling unit 30 of the traveling device 3 to travel, for example, from the lower right to the lower left in FIG. While the waterproof sheet 52 is pressed onto the surface of the primary lining by the left waterproof sheet crimping device 6, the edge of the crimped waterproof sheet 52 and the edge of the already stretched waterproof sheet 52 are welded.
In this way, the traveling section 30 of the traveling device 3 is
Move the waterproof sheet 52 from the bottom right to the bottom left of the diagram.
Once the waterproof sheet 52 is stretched, the running section 30 is moved from the lower left to the lower right in FIG. The waterproof sheet 5 is crimped and stretched on the surface of the primary lining of the tunnel using the device 6.
2.

As described above, the waterproof sheet stretching device of the present invention in this embodiment can be applied to a trolley 1 traveling in a tunnel.
A guide member 2 is equipped with the guide member 2, and the traveling device 3 is run along this guide member 2 to stretch the waterproof sheet 52 on the surface of the primary lining, so it is not necessary to erect or dismantle conventional scaffolding. It is easier to work with and has good work efficiency compared to other products. In addition, the suspended scaffold 4 is attached to the traveling section 30 of the traveling device 3, and the floor plate 4 of the suspended scaffold 4 is
4 is configured so that it is always kept horizontal with respect to the direction of gravity, so a worker can easily get on the suspended scaffold 4 and perform repair work such as welding the waterproof sheet 52 or fixing wrinkles in the waterproof sheet 52. can. Furthermore, in this embodiment, since the waterproof sheet crimping device 6 is provided, the waterproof sheet 52 can be neatly crimped onto the surface of the primary lining without wrinkles. Furthermore, in this embodiment, since the suspended scaffold moving device 7 is provided, the suspended scaffold 4 can be moved to a predetermined position by operating the first hydraulic cylinder 71 and the second hydraulic cylinder 72. For example, if the suspended scaffold 4 is located on both the left and right sides of the tunnel, the suspended scaffold 4 can be moved vertically and horizontally, and if the suspended scaffold 4 is located at the top of the tunnel, the suspended scaffold 4 can be moved up and down. Further, when the suspended scaffold 4 is located diagonally above the left and diagonally above the right of the tunnel, the suspended scaffold 4 can be moved diagonally up and down and to the left and right. In this embodiment, since the hydraulic cylinder 64 is interposed between the traveling section 30 of the traveling device 3 and the main arm 60 of the waterproof sheet crimping device 6, the waterproof sheet 52 of the waterproof sheet crimping roller 63
The crimping position can be adjusted to match the cross-sectional size of the tunnel, making it versatile for installing waterproof sheets.

FIG. 8 is a partial front view showing a second embodiment of the waterproof sheet stretching device of the present invention. In this embodiment, the waterproof sheet tensioning device of the present invention has an engagement ring 30 attached to the lower edge of two plate-shaped skaters 301'.
2' is provided, and this engagement ring 302' is engaged with the guide rail 22 of the guide member 2. Said skater 3
01' and an engaging ring 302', the suspended scaffold is rotatably attached to the traveling section 30', that is, the floor of the suspended scaffold 4 is always maintained in a horizontal state, and a waterproof sheet 52 is attached to the traveling section 30'. A device 5 for supplying is provided. This running section 30' is pulled and run by a chain 324 that is wrapped around a sprocket 321 of the drive section. The waterproof sheet stretching device of the present invention in this embodiment can achieve the same effects as those described above.

As is clear from the above embodiments, the waterproof sheet tensioning device of the present invention is provided by equipping a trolley running in a tunnel with a guide member, engaging a traveling device with the guide member, and guiding the traveling device. Since the tarpaulin sheet is stretched along the surface of the primary lining by running along the members, the work is simpler than the conventional method of erecting and dismantling scaffolding to stretch the tarpaulin sheet. Good work efficiency. In addition, since the suspended scaffold is attached to the traveling device so that the floor of the suspended scaffold is always kept horizontal, it is easy for workers to ride on the suspended scaffold and perform work such as welding and repairing the tarpaulin sheet. It has the following effects:

Note that, as a matter of course, the waterproof sheet stretching apparatus of the present invention is not limited to the above-mentioned embodiments.

[Brief explanation of drawings]

1 to 7 show a first embodiment of the waterproof sheet stretching device of the present invention, FIG. 1 is a front view, and FIG.
The figure is a side view, Figure 3 is a front view of the running section, Figure 4 is a front view of the waterproof sheet supply mechanism and waterproof sheet crimping device, Figures 5, 6, and 7 are plan views of the suspended scaffold. They are a front view and a side view. FIG. 8 is a partial front view showing a second embodiment of the waterproof sheet stretching device of the present invention. DESCRIPTION OF SYMBOLS 1... Trolley, 2... Guide member, 3... Travel device, 4... Hanging scaffold, 5... Waterproof sheet supply mechanism, 6... Waterproof sheet crimping device, 7... Hanging scaffold moving device.

Claims (1)

[Scope of Claims] 1. A bogie that travels in a tunnel, a guide member that has a shape similar to the cross-sectional shape of the tunnel and is equipped on the bogie, and a bogie that engages with the guide member and travels back and forth along the guide member. tunnel construction, comprising: a traveling device for moving the vehicle; a hanging scaffold rotatably supported on the traveling device so as to keep the floor always in a horizontal state; and a waterproof sheet supply mechanism equipped on the traveling device. Tarpaulin sheet tensioning equipment. 2 The traveling device includes a main arm whose base end is rotatably attached to the traveling device, an auxiliary arm whose base end is rotatably attached to the tip of the main arm, and a rotatable arm at the tip of the auxiliary arm. A pressure roller attached to the
Claim 1, further comprising a waterproof sheet crimping device comprising an elastic member interposed between the front main arm and the auxiliary arm to constantly urge the crimping roller toward the tunnel. waterproof sheet tensioning equipment for tunnel construction. 3. A waterproof sheet stretching device for tunnel construction according to claim 1, characterized in that a suspended scaffold moving device comprising a cylinder or the like is provided between the traveling device and the suspended scaffold.