JP2000291392A - Waterproof sheet stretching apparatus and waterproof sheet stretching method - Google Patents

Abstract

(57) Abstract: A waterproof sheet stretching apparatus A used when a waterproof sheet 3 wound around a sheet roll 4 is rewound and stretched on a tunnel inner wall B, wherein the tunnel inner wall B is used.
At least one pair of rail members 2 provided on the work cart 1 in a substantially arched shape along with at least one pair of wheel members 6 provided movably on these rail members 2, respectively;
A shaft member 5 attached to the wheel member 6 and rotatably supporting the sheet roll 4; [Effect] The sheet roll can be smoothly transported along the inner wall of the tunnel without using a special driving device, and the durability of the device is excellent. The stretching work can be performed, and the work efficiency of the entire sheet stretching work can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterproof sheet stretching apparatus provided in a work cart used for stretching a waterproof sheet on the inner wall of a tunnel during a tunnel excavation-related operation, and a waterproof sheet using the apparatus. The present invention relates to a method for stretching a waterproof sheet stretched on an inner wall of a tunnel.

[0002]

2. Description of the Related Art Conventionally, during work related to tunnel excavation, a waterproof sheet has been provided on the inner wall of a tunnel to prevent water from the ground from leaching into the tunnel. Is being done. When the waterproof sheet is stretched, a work vehicle equipped with a waterproof sheet stretching device is used, and the work vehicle equipped with such a conventional waterproof sheet stretching device is a truck rail installed on the ground in a tunnel. A stair that connects a work floor on each floor and a work floor on the upper and lower floors for performing seating work, which includes a wheel traveling on the top and a bogie section running in a tunnel by a self-propelled device for rotating the wheel. A working scaffold consisting of Then, in this waterproof sheet stretching apparatus, a pair of rail members provided on the work cart in an arch shape along the tunnel inner wall, and a waterproof sheet are wound,
The sheet rewinding is performed while transferring the sheet roll having the sheet leading end fixed at the sheet stretching start position on the inner wall of the tunnel from one lower end of the arched rail material to the lower end on the opposite side along the rail material. Roll driving mechanism.

Conventionally, various mechanisms have been adopted as a waterproof sheet stretching apparatus. Here, a roll driving mechanism of the waterproof sheet stretching apparatus as an example is as follows.
A wire rope is used, and a hook member fixed at several places on the lower surface side of the pair of rail materials and a winding drum fixed at both ends of each rail material are respectively used to form arch-shaped rail materials. A pair of wire ropes is stretched along the pulleys, and a pair of front and rear pulleys are held as a set, and the sheet roll is held on a pair of roll drive mechanisms each wound with each wire rope several times, and each wire rope is wound on a winding drum. Thus, the sheet roll is transferred as described above to rewind the sheet.

However, in the case of the conventional waterproof sheet stretching apparatus using the above-mentioned wire rope, the wire rope is often caught when winding up or rewinding, and the transfer of the sheet roll and the rewinding of the sheet are performed smoothly. It is difficult to use a sheet roll having a relatively small sheet width (for example, about 2 to 3 meters) in consideration of the load resistance of the wire rope and the operability of winding and rewinding the wire rope. Preferably, the sheet width is relatively large (for example, 4 to 5 meters), it is difficult to use a relatively heavy (for example, about 100 kg) sheet roll as the sheet roll, and it has not been easy to improve the efficiency of the sheet stretching operation. . In addition, depending on the device, if the wire rope end is not properly treated, the wire rope may be caught when moving the work cart or seating work, and there is room for improvement in safety in the work. . In addition, none of the mechanisms using other mechanisms sufficiently satisfied the operability and safety.

The present invention has been made in view of the above circumstances, and has good operability in transferring a sheet roll and rewinding a sheet from the sheet roll without using a complicated device, and has a high safety at a work site. It is an object of the present invention to provide a waterproof sheet stretching apparatus and a waterproof sheet stretching method which are excellent in performance.

[0006]

In order to achieve the above object, the present inventor has set forth the following objects. (1) A waterproof sheet used when rewinding a waterproof sheet wound around a sheet roll and stretching it on an inner wall of a tunnel. A tensioning device, at least one pair of rail members provided on the work carriage in a substantially arch shape along the tunnel inner wall, at least one pair of wheel members provided movably to these rail members, and A waterproof sheet stretching apparatus, comprising: a shaft member that is attached and rotatably supports the sheet roll; and (2) waterproofs the waterproof sheet wound around the sheet roll according to (1). A method of stretching the inner wall of a tunnel using a sheet stretching device, wherein the shaft member is inserted into the sheet roll, and the shaft member is connected to the wheel portion. By mounting these wheel members near the substantially arched apex of the rail material respectively, after attaching the sheet roll to the waterproof sheet stretching apparatus, rolling the wheel member along the rail material. And a method for stretching the waterproof sheet, wherein the waterproof sheet stretched out from the sheet roll is stretched.

Here, it is more preferable that the rail member is provided with a stopper mechanism, and it is further preferable that a belt is passed through the sheet roll and the rolling speed of the wheel member is controlled by the belt. .

According to the waterproof sheet stretching apparatus of the present invention, when the wheel member on which the shaft member supporting the sheet roll on which the waterproof sheet is wound is mounted on a rail material, the wheel member is mounted on the inner wall of the tunnel. Rolling on the rail material formed in an arch shape along with, the sheet roll rotates with it, and the waterproof sheet wound around it is fed out, so the waterproof sheet is extended along the inner wall of the tunnel I can go.

In the case of the present invention, the wheel member falls on the substantially arch-shaped rail member due to the weight and the weight of the waterproof sheet, and the sheet roll is transferred along the rail member. It is not necessary to use a wire rope to wind it up or use a special driving device, not only there is no complicated device or complicated work,
The waterproof sheet can be easily pulled out from the sheet roll, and excellent in operability and safety when the waterproof sheet is stretched.

Here, if the rail member is provided with a stopper mechanism, the wheel member rolling on the rail member can be stopped halfway, so that excessive acceleration is prevented, and the waterproof member pulled out from the sheet roll is prevented. Since the sheets can be sequentially stretched on the inner wall, it is more preferable.

According to the waterproof sheet stretching method of the present invention using the waterproof sheet stretching apparatus, the shaft member is inserted into a sheet roll around which the waterproof sheet is wound, and the wheel member is mounted on the shaft member. After mounting the sheet roll on the waterproof sheet stretching apparatus by mounting the wheel members near the substantially arched apex of the rail material, rolling the wheel members along the rail material. So, for example, if the waterproof sheet is wound with so-called eyeglasses using two sheet rolls, a special driving force can be obtained by pulling out the waterproof sheet simultaneously as described above or one by one as described above. The tarpaulin can be stretched along the tunnel inner wall without the need for By Kukoto, easily, and safely can be stretched a tarpaulin. In addition, if the waterproof sheet is normally wound using one sheet roll, two of these are prepared, and the ends are fixed in advance by appropriate means such as welding, and then If it is expanded in the same manner as in the case of eyeglass winding, it can be easily installed on the inner wall of the tunnel.

Further, a belt is passed through the sheet roll,
If the rolling speed of the wheel member is controlled by the belt, for example, even if the sheet roll is relatively heavy, it is possible to suppress excessive acceleration or to spread the sheet in accordance with the progress of the waterproof sheet stretching operation. Therefore, it is more preferable.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in more detail with reference to the drawings.

FIGS. 1 and 2 illustrate an example of the configuration of the present invention. FIG. 1 is a schematic front view of a work vehicle in a tunnel in which a waterproof sheet stretching apparatus A is installed, and FIG. It is explanatory drawing which expanded and showed the wheel member and the shaft member mounted on the rail material of the waterproof sheet stretching apparatus A. This device A
1 are supported on the work cart 1 so as to form a substantially arched shape along the tunnel inner wall B as a pair (one pair in the drawing) as shown in FIG. 1 and a pair of sheet rolls 4 for unwinding a waterproof sheet 3 wound around a pair of eyeglasses along the rails 2 and 2. The shaft 4 is composed of a total of four shafts (shaft members) 5 inserted from both ends of the shaft 4, and bearings (wheel members) 6, 6 through which the shaft members 5 are respectively inserted.

Each of the rail members 2 is supported on the work carriage 1 at several locations by support brackets 2a. Since the waterproof sheet device A is configured symmetrically, the left side of the drawing is partially omitted in FIG. In the drawing, stopper mechanisms 2b, 2b are provided on each pair of front and rear rail members 2 at a plurality of positions (two positions in FIG. 1) at the same position on the rail in the middle of the length direction. Provided. This stopper mechanism 2b
The configuration of the rail member 2 is not particularly limited as long as the rotation of the bearing 6 rolling on the rail member 2 can be stopped. For example, as shown in FIG. Holes with a diameter of about 8 mm are provided at the top and bottom,
A stopper mechanism for stopping a bearing 6 rolling on the rail member 2 by inserting a steel material 8 having a diameter of about 6 mm formed into a U-shape in accordance with the position of the hole and inserting the steel material 8 into the hole as described later. Can be.

In the case of the waterproof sheet stretching apparatus A, as shown in FIG. 2, the rail member 2 has a concave cross section, and the shaft (shaft member) 5 is connected to each end of the sheet roll 4 as described above. The sheet roll 4 is rotatably supported as a set of two rolls. In the case of the present invention, the shaft is not a pair of two, but one long shaft is prepared, and may be used by being inserted from one end side of the sheet roll to the other end side. Considering the nature, it is preferable to use them as a pair.

In this case, the length of the shaft 5 is determined by the width of the sheet roll 4, the weight of the wound waterproof sheet 3,
It can be appropriately selected according to the material and diameter of the shaft 5, and for example, the total weight of the waterproof sheet 3 wound around the glasses and the two sheet rolls 4 is 100 to 150 kg, and the width of the sheet roll 4 is 3 to 4 m. If the shaft 5 is a rod made of aluminum and the diameter is 5 to 8 cm, the length (L in the figure) that can be inserted into the sheet roll is preferably about 1 to 2 m, more specifically. For example, if the total weight is 110 to 120 kg, the roll width is 3.6 m, and the shaft diameter is about 6 cm, L in the drawing is preferably about 1.5 m.

The shaft 5 may have a simple rod shape, but when the rail member 2 has a concave cross section as shown in FIG. 2, two concave strips 5a, 5a are formed in accordance with the width of the rail member 2.
Is formed along the circumferential direction, it is possible to effectively prevent the sheet roll 4 from swaying due to lateral sway of the bearing 6 at the time of transfer.

In the case of the present invention, the shaft member and the wheel member may be integrally rotated like the shaft 5 and the bearing 6 in FIG. 2, or may be separately rotated. Further, as long as the shaft member rotatably supports the sheet roll, the sheet roll and the shaft member may rotate integrally, or may rotate separately. You may.

The material of the shaft 5 is not particularly limited as long as it has such a strength that a roll body of 30 kg or more can be supported in a pair.
For example, a rod or tube made of aluminum as described above,
Then, a metal rod or tube such as an iron rod or tube can be suitably used.

The material of the bearing 6 is not particularly limited. For example, high carbon chromium steel, high speed steel, stainless steel, carbon steel, chromium molybdenum steel or the like can be used. The material of the rail member 2 is not particularly limited, and the same material as the above-described device using a conventional wire rope can be used.

Further, in the case of the device A, it is more preferable that the danger prevention jig 7 is attached to the end of the shaft 5 penetrating to the outside of the bearing 6 as shown in FIG. The danger prevention jig 7 is preferably formed of a steel material in a cross shape or a round shape. If such a danger prevention jig 7 is attached, even if one of the two shafts 5, 5 runs out of control and the bearing 6 falls off, the danger prevention jig 7 is attached. Is caught on the rail member 2, so that the roll body (the sheet roll 4) can be prevented from dropping from the rail member 2.

As shown in FIG. 1, a work cart 1 provided with the waterproof sheet stretching device A is a self-propelled device (not shown).
And truck rails 11, 11 installed on the ground in the tunnel
A bogie unit composed of wheels 12 and 12 running on the upper side and work floors on each floor for seating work, and stairs 13 and 13 connecting the work floors on the upper and lower floors, and waterproofing on the top floor of the work bogie 1. A simple tower crane (not shown) for lifting a set of sheet rolls 4, 4 around which a sheet 3 is wound around eyeglasses, and a sheet roll 4 installed on the work floor on the top floor of the work cart 1. , 4 to rail material 2, 2
Lifter 14 for lifting near the substantially arched vertex of
And a work scaffold having the following. Then, as shown in FIG. 1, arrows (X, X) are shown on the work floor on the intermediate floor of the work cart 1 so that the tip is far from the rail material 2.
Floor members 15, 15 that can expand and contract in the direction are provided.

When the waterproof sheet 3 is stretched on the inner wall B of the tunnel by using the waterproof sheet stretching apparatus A having the above structure, first, the sheet rolls 4, 4 on which the waterproof sheet 3 is wound with glasses as described above are not shown. As shown in FIG. 2, after being conveyed to the work floor on the top floor of the work vehicle 1 by a simple tower crane, or before being conveyed, one end of each of the sheet rolls 4 or both the sheet rolls 4, 4 The shafts 5 are inserted from the side, and a pair of shafts 5
After one sheet roll 4 is rotatably supported or before it is rotatably supported by the bearings 6, the shafts 5.
Then, the sheet rolls 4, 4 are placed on the lifter 14, and the lifter 14 is lifted between the substantially arched rail members 2, 2 as described above. , 4 are installed near the substantially arched vertex formed by the rail members 2, 2.

After placing the bearings 6 on the upper surface in the concave shape of the rail member 2 and lowering the lifter 14 slightly to release the support of the sheet roll, the bearings 6 forming a pair move along the rail members. Rolling in parallel,
When the bearing 6 travels in this manner, the sheet roll 4 is rotatably supported by the pair of shafts 5, so that the sheet roll 4 is sandwiched between the substantially arched rail members 2 as the bearings 6 roll in pairs. It is transferred along the inner wall B of the tunnel in the state of being performed. Here, the waterproof sheet 3 is wound around the sheet rolls 4 and 4 with glasses, and an intermediate portion thereof is fixed near the arch-shaped apex of the rail members 2, 2. It is unwound from the roll 4 and is rewound.

When the bearing 6 reaches the position of the stopper mechanism 2b provided on the rail member 2, the running of the bearing 6 is stopped by the stopper mechanism 2b projecting from the upper surface of the rail member 2, so that the bearing 6 is rewound. The worker on the work floor can sequentially attach the waterproof sheet 3 to the tunnel inner wall B. When the mounting work of the worker is completed, the U-shaped steel material 8 of the stopper mechanism 2b that is hooking the bearing 6 is removed and the hook is released, and the bearing 6 rolls again to the position of the next stopper mechanism 2b, Since the waterproof sheet 3 is paid out, the same operation is performed.

Further, in order to stop the transfer of the sheet roll 4 on the middle floor, an extendable floor member 15 provided on the work floor is required.
Can be stopped at each floor irrespective of the stopper mechanism 2b. Further, a belt is passed through the sheet roll 4 in advance, and the belt can be fixed at an arbitrary position similar to the seat belt of an automobile.
The transfer speed can be controlled, ensuring safety even if the bearings deviate from the rail track.

The waterproof sheet stretching apparatus A is particularly useful when the waterproof sheet is wound around a sheet roll with glasses. If the waterproof sheet is stretched as described above using this apparatus A, a wire rope can be used. Unlike the conventional method, the sheet roll does not sway at the time of transferring the sheet roll, and also has excellent load resistance, so that, for example, even when the total weight exceeds 100 kg, it is easy and safe. The work of attaching the waterproof sheet can be performed.

The present invention is not limited to the above configuration. For example, as shown in FIG. 4, the rail member 2 of the apparatus A is formed in a lip groove shape almost following the shape of the bearing 6,
It is also preferable that the shaft 5 is not formed with the concave stripes 5a, 5a, and that the shaft 5 is attached so as not to penetrate to the outside of the bearing 6. In this case, the stopper mechanism 2b
For example, as shown in FIG. 5, a hole having a diameter of about 8 mm is provided on each of the upper and lower sides of the lip groove of the rail material 2 and the steel material 8 formed in a U-shape in the same manner as described above in accordance with the position of the hole. It is preferred to insert each into a hole. Also, as shown in FIG. 6, the rail material 2 of the apparatus A is slightly spaced apart from the above-described lip groove-shaped portion and the portion provided above and below such that the opening having the concave cross-section faces up and down. It is preferable that bearings 6 and 6 attached to the shaft 5 at the above-mentioned intervals are mounted on respective portions, and the bearings 6 and 6 may be variously changed without departing from the gist of the present invention. No problem.

[0030]

According to the present invention, the sheet roll can be smoothly transported along the inner wall of the tunnel without using a special driving device, and the durability of the device is excellent. The sheet stretching operation can be performed using the sheet roll, and the work efficiency of the entire sheet stretching operation can be improved. In addition, since the transfer speed of the sheet roll can be controlled or stopped with high positional accuracy, the operability of the sheet rewinding operation is excellent, and the work efficiency of the sheet tensioning operation itself is improved. Furthermore,
Since the shaft member and the wheel member used in the seat tensioning device are excellent in storage, the safety at the work site is also excellent.

[Brief description of the drawings]

FIG. 1 is a schematic front view of a work cart on which a waterproof sheet stretching apparatus according to a configuration example of the present invention is installed.

FIG. 2 is an explanatory diagram of a wheel member and a shaft member attached to a rail member of the device.

FIG. 3 is an explanatory diagram of a configuration example of a stopper mechanism of the device.

FIG. 4 is an explanatory diagram of a wheel member and a shaft member attached to a rail member of a waterproof sheet stretching apparatus according to another configuration example of the present invention.

FIG. 5 is an explanatory diagram of a configuration example of a stopper mechanism of the device.

FIG. 6 is an explanatory view of a wheel member and a shaft member attached to a rail member of a waterproof sheet stretching apparatus according to still another configuration example of the present invention.

[Explanation of symbols]

 A Waterproof sheet tensioning device B Tunnel inner wall 1 Work cart 2 Rail material 2b Stopper mechanism 3 Waterproof sheet 4 Seat roll 5 Shaft (shaft member) 6 Bearing (wheel member)

Claims (4)

[Claims] 1. A waterproof sheet stretching apparatus used when a waterproof sheet wound around a sheet roll is rewound and stretched on an inner wall of a tunnel, and is provided on a work cart in a substantially arch shape along the inner wall of the tunnel. At least one pair of rail members provided, at least one pair of wheel members movably provided on these rail members, and a shaft member attached to these wheel members and rotatably supporting the sheet roll. A waterproof sheet stretching apparatus characterized by the following. 2. The waterproof sheet stretching apparatus according to claim 1, wherein the rail member is provided with a stopper mechanism. 3. A method for stretching a waterproof sheet wound around a sheet roll on an inner wall of a tunnel using the waterproof sheet stretching apparatus according to claim 1 or 2, wherein the shaft member is attached to the sheet roll. At the same time as inserting, attaching the shaft member to the wheel member, and placing these wheel members near the substantially arched apex of the rail material respectively, after attaching the sheet roll to the waterproof sheet stretching device, A method for stretching a waterproof sheet, comprising rolling a wheel member along the rail material and stretching the waterproof sheet fed from the sheet roll. 4. The method for stretching a waterproof sheet according to claim 3, wherein a belt is passed through the sheet roll, and the rolling speed of the wheel member is controlled by the belt.