JP4253999B2 - Tunnel repair device - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a tunnel repair device, and more particularly to a repair device suitable for repairing the inner peripheral edge of a tunnel such as a sewage pipe in a state where water is flowing.
[0002]
[Prior art]
In some cases, the inner peripheral edge of a tunnel such as a sewer pipe that has deteriorated over time is scraped off, and a corrosion-resistant sheet made of resin or rubber is attached to the exposed inner peripheral surface for repair. In this case, it is common to repair the pipe in a closed state. However, when the pipe cannot be closed due to various circumstances, the work is performed under running water.
[0003]
[Problems to be solved by the invention]
When the inner diameter of the pipe is increased, a work table is required. However, since the work table is installed on the inner peripheral surface of the arc-shaped tunnel, the work table is likely to become unstable, and there is a problem that it takes time to install and move the work table. Further, when the flow rate of water is increased, the work table may be swept away.
[0004]
The present invention provides a tunnel repair device that can be safely repaired without hindrance even when sewage is flowing.
[0005]
[Means, actions and effects for solving the problems]
The present invention is an apparatus used when repairing an inner peripheral surface of a tunnel, and includes a carriage and at least one work box. The bogie has a floor and wheels having a caster function that are suspended from the floor and support the floor substantially horizontally, and each main leg runs on the inner peripheral surface of the tunnel. And at least one driving source for driving at least one of the wheels, and the vehicle runs on its own by this driving source. The work box is attached to the floor so as to be movable up and down, and is formed in a cylindrical shape having upper and lower ends as openings.
[0006]
When the wheel of the carriage is placed on the inner peripheral surface of the tunnel, the weight of the carriage itself is added to the wheel, the wheel is pressed against the inner peripheral surface of the tunnel, and the wheel is caster function, that is, around the axis perpendicular to the rotation axis of the wheel. Since the entire wheel has a function of turning, the wheel is always kept in close contact with the inner peripheral surface of the tunnel even if the tunnel has a curved portion. When the wheels are driven by the drive source in this state, the carriage travels on its own to the place to be repaired.
[0007]
After the trolley arrives at the place to be repaired, the worker performs repair work using the work box. When water is flowing in the tunnel, in order to repair the upper part of the inner peripheral surface of the tunnel above the water surface, the table is placed on the work box and fixed, and the worker works on the table. Or work on the floor. In order to repair the lower part of the inner peripheral surface below the water surface, that is, the part in the water, a sealing material is placed between the lower end of the work box and the inner peripheral surface of the tunnel to keep it in a liquid-tight state. Repair work after pumping out the water inside.
[0008]
Since each wheel of the bogie has a caster function, the wheel rolls on the inner circumferential surface of the tunnel without a rail, and the bogie can travel reliably, so that the movement is easy.
[0009]
Since the wheels roll on the inner peripheral surface of the tunnel regardless of the presence or absence of water such as sewage, extra work such as providing a bypass path can be omitted when water is flowing.
[0010]
When water is flowing, the work box can be lowered into the water and the work can be repaired after the water in the work box is pumped out.
[0011]
In another invention, the carriage has three work boxes. One work box is at the center of the floor, and another work box is at the first side part that is biased from the center of the floor to the side perpendicular to the traveling direction of the carriage. Work boxes are respectively disposed on the second side portions that are offset from the center portion of the floor to the side opposite to the first side portion.
[0012]
On the inner peripheral surface of the tunnel perpendicular to the tunnel axis, one work box is located in the center, another work box is located on one side across the center, and the other is located across the center. Another work box will be located on the side. This is because the three work boxes are substantially present in the underwater portion of the inner peripheral surface of the tunnel, and repair without leakage of the inner peripheral surface of the tunnel is possible.
[0013]
In still another invention, the lower end of the work box has a curved surface that substantially matches the shape of a part of the inner peripheral surface of the tunnel.
[0014]
When water is flowing through the tunnel, to repair the underwater part, a sealing material is placed between the lower end of the work box and the inner peripheral surface of the tunnel to keep it in a liquid-tight state. If it is substantially matched with the shape of a part of the inner peripheral surface of the tunnel, it is easy to maintain a liquid-tight state.
[0015]
In yet another invention, the carriage has a gripper operated by a jack that moves in a direction perpendicular to the traveling direction of the carriage with respect to the floor and takes a reduced storage position and an extended work position.
[0016]
When moving the carriage, the gripper is moved to the storage position. After the movement is completed, move the gripper to the working position.
[0017]
When the gripper is in the working position, the gripper is pressed against the inner peripheral surface of the tunnel by the jack, and the carriage is firmly fixed, so that the safety of the repair work can be improved.
[0018]
In another invention, it has a plurality of auxiliary legs standing upright from the floor, and each auxiliary leg has means for rolling in contact with the inner peripheral surface of the tunnel.
[0019]
When the carriage is moved, the wheels of the main legs and the rolling means of the auxiliary legs roll on the inner peripheral surface of the tunnel, and the sideways movement of the carriage can be suppressed.
[0020]
In still another invention, the main leg can be expanded and contracted in the vertical direction.
[0021]
When the carriage is to be moved, the main leg is reduced so that there is a clearance between the auxiliary leg and the inner peripheral surface of the tunnel. Thereby, the carriage can be moved without any trouble. When the main leg is extended after moving to a predetermined location, the wheels of the main leg and the rolling means of the auxiliary leg are brought into close contact with the inner peripheral surface of the tunnel, and the carriage is stably held. Also, tunnels with different tunnel diameters can be repaired.
[0022]
In still another invention, the same number of drive sources as the wheels for independently driving the plurality of wheels are provided.
[0023]
Since the plurality of wheels are independently driven and each wheel has a caster function, the movement can be smoothly performed even when moving on the curved inner peripheral surface of the tunnel.
[0024]
DETAILED DESCRIPTION OF THE INVENTION
The apparatus used when repairing the inner peripheral surface 11 of the tunnel 10 is shown in FIG. 1 in a planar state, FIG. 2 cut along a vertical plane including the axis of the tunnel, and FIG. And at least one work box 14.
[0025]
The cart 12 is a caster function that includes a floor 16 and at least three main legs 18 that are suspended from the floor 16 and support the floor 16 substantially horizontally, and each main leg 18 travels on the inner peripheral surface of the tunnel 10. And at least three main legs 18 having wheels 20 having a wheel and a drive source 22 for driving at least one wheel 20.
[0026]
The floor 16 has a substantially flat surface, and a suitable reinforcing material is attached to a horizontally arranged flat steel plate, expanded metal or other flat plate so that the planar shape is rectangular or square. Can do. Four main legs 18 are attached to four locations on the floor 16 and are suspended. At least three main legs 18 are provided, but four or more are preferable. A wheel 20 that rolls on the inner peripheral surface 11 of the tunnel is attached to the lower end of the main leg 18. The floor 16 and the main leg 18 are preferably formed so as to be divided into several parts and assembled so that they can be carried into the tunnel from a human hole.
[0027]
In the illustrated embodiment, the main leg 18 comprises a hydraulic cylinder device known per se having a cylinder and a piston rod connected to the piston. The cylinder of the hydraulic cylinder device is fixed to the floor 16 and the piston rod is connected to the wheel.
[0028]
Referring to FIG. 4 showing details, the bracket 24 is connected to the piston rod 26 of the hydraulic cylinder device. A wheel support 28 having an L-shaped cross section supports the wheel 20 so as to be rotatable around the rotation axis C1. The wheel support 28 is attached to the bracket 24 via a journal bearing 30 and can turn around an axis C2 orthogonal to the rotation axis C1. As a result, the wheel 20 is given a caster function. Each wheel 20 is driven by a hydraulic motor 22 as a drive source. Thus, although it is preferable to drive the wheel 20 of each main leg 18, in order for the trolley | bogie 12 to drive | work, at least 1 wheel 20 is driven. A rubber anti-slip layer 32 is coated on the outer periphery of the wheel 20.
[0029]
As indicated by phantom lines in FIG. 4, the steering device 34 can be attached to the bracket 24 and the wheel support 28 to steer the wheel 20. The steering device 34 is a hydraulic cylinder device including a cylinder and a piston rod connected to the piston, and is used by connecting the cylinder to the bracket 24 and connecting the piston rod to the wheel support 28. When the piston rod is expanded and contracted, the wheel support 28 turns around the axis C <b> 2 and steers the wheel 20. Since the wheel 20 can have a caster function and the wheel 20 can be driven by rolling the wheel 20 on the tunnel inner peripheral surface 11, the steering device is not necessarily required. By providing the steering device, the carriage 12 can be moved more accurately.
[0030]
When the main leg 18 expands and contracts as in the illustrated embodiment, the level of the floor 16 can be adjusted up and down. Accordingly, when the tunnel 10 having a different diameter is repaired or when the water 36 is flowing in the tunnel 10 (FIG. 3), the level of the floor 16 is adjusted according to the height of the water surface S, which is suitable for the work. An environment can be created.
[0031]
The carriage 12 preferably includes a plurality of auxiliary legs 40 upright from the floor 16. The auxiliary leg 40 has means 42 that rolls in contact with the inner circumferential surface 11 of the tunnel. In the illustrated embodiment, the rolling means 42 is a wheel formed in the same manner as the wheel 20, but it is not always necessary that the wheel has a caster function. The rolling means 42 may be a cylinder or a truncated cone that can rotate around a vertical axis, or a sphere supported by a spherical surface.
[0032]
Even if the diameter of the tunnel 10 is different, the wheel 12 of the main leg 18 and the rolling means 42 of the auxiliary leg 40 are connected to the inner periphery of the tunnel by providing the auxiliary leg 40 to the carriage 12 and forming the main leg 18 to be extendable and contractible. The carriage 12 can be stably supported by being in close contact with the surface 11.
[0033]
The work box 14 has a cylindrical shape with a horizontal cross section and has an opening at the upper end and the lower end, and has dimensions that allow a worker to enter. The work box 14 is attached to the floor 16 so as to be movable up and down.
[0034]
As shown in FIG. 5 in a cross-sectional state, the work box 14 is inserted into a guide 44 having a quadrangular cross section protruding upward from the floor 16 and a square hole provided in the floor 16, and the guides 44 oppose each other. The hydraulic cylinder device 46 is connected to two hydraulic cylinder devices 46 attached to the piece, and is moved up and down by the hydraulic cylinder device 46.
[0035]
When there is water 36 in the tunnel 10, the work box 14 is lowered as shown by a solid line, and a sealing material 48 is disposed between the lower end of the work box 14 and the tunnel inner peripheral surface 11 to make it liquid-tight. Thereafter, the water in the work box 14 is drawn out, and the tunnel inner peripheral surface 11 is repaired. It is preferable to provide a ladder in which the worker can move up and down inside the work box 14. In order to repair the portion of the tunnel inner peripheral surface 11 above the surface of the water, the work box 14 is lifted as it is or as indicated by the phantom line, the lid is fixed to the work box 14, Work. Or work on the floor 16.
[0036]
The repair device can be provided with one work box 14 by providing the work box 14 substantially at the center of the floor 16 and increasing the width in the direction perpendicular to the axis of the tunnel. It is preferable to have. In this case, as shown in FIG. 1, one work box 14 is biased toward the center of the floor 16, and another one work box 54 is biased from the center of the floor 16 to the side perpendicular to the traveling direction of the carriage 12. On the first side portion, another one work box 56 is disposed on the second side portion that is offset from the center portion of the floor 16 toward the side opposite to the first side portion. The work boxes 54 and 56 are also formed in a cylindrical shape like the work box 14 and are lifted and lowered by a jack.
[0037]
In the embodiment shown in FIG. 6 in a cross-sectional state, the work box 54 is inserted into a guide 58 having a square section protruding downward from the floor 16 and a square hole provided in the floor 16, and the guides 58 oppose each other. The hydraulic cylinder device 60 is connected to two hydraulic cylinder devices 60 attached to a piece to be moved up and down by the hydraulic cylinder device 60. The work box 56 can be attached to the floor 16 in the same manner as the work box 54.
[0038]
The lower ends of the work boxes 14, 54, 56 preferably have a curved surface that substantially matches the shape of a part of the inner circumferential surface 11 of the tunnel. In this way, it is easy to maintain liquid tightness with the sealing material. Referring to FIGS. 5 and 6, the lower end 15 of the work box 14 is a circular arc symmetric with respect to the vertical plane including the axis of the tunnel 10 because the work box 14 is in the center. In contrast, the lower end 55 of the work box 54 is an asymmetrical arc because the work box 54 is biased to the right in the drawing. The lower end of the work box 56 is formed in a circular arc symmetrical to the lower end 55 of the work box 54. The seal material 48 disposed between the lower end 15 of the work box 14 and the tunnel inner peripheral surface 11 and the seal material 62 disposed between the lower end 55 of the work boxes 54 and 56 and the tunnel inner peripheral surface 11 are respectively provided. It is formed in an arc that matches the lower ends 15 and 55.
[0039]
The carriage 12 has a gripper 70 that is operated by a jack 72 that moves in a direction perpendicular to the traveling direction of the carriage with respect to the floor 16 and takes a reduced storage position and an extended work position. The gripper 70 is suspended from the floor 16 by a guide roller 74 disposed in a groove provided in the floor 16 extending in a lateral direction perpendicular to the axis of the tunnel 10 as shown in FIG. Is a flat plate supported by a support roller 76 attached to the floor 16.
[0040]
In the embodiment shown in FIG. 7, two grippers 70 are provided to move in opposite directions with respect to the floor 16. The jack 72 is a hydraulic cylinder device in which one end is connected to the floor 16 and the other end is connected to the gripper 70. Each gripper 70 is operated by two jacks 72 spaced in the axial direction of the tunnel 10. When the gripper 70 is formed of a flat plate, the gripper 70 can be used as a work floor when the gripper 70 takes a work position.
[0041]
In addition to the above-described gripper 70, as shown in FIG. 3, two wires 76 are stretched in the axial direction of the tunnel near the side surface of the tunnel 10 and wire is blocked by a block stop 78 protruding laterally from the carriage 12. It is preferable that the carriage 12 is firmly fixed to a place where the work is to be performed with the 76 interposed therebetween.
[0042]
An auxiliary work box 80 can be provided. The work box 80 is intended to repair a portion of the tunnel inner peripheral surface 11 that is further outward of the work boxes 54 and 56 when the work boxes 54 and 56 cannot repair the portion of the tunnel inner peripheral surface 11 that is underwater. use. As illustrated in FIG. 6, the work box 80 is detachably supported by the slide plate 82. That is, when the work box 80 is inserted into the hole of the slide plate 82, the flange 81 at the upper end of the work box 80 is caught by the edge of the hole and supported by the slide plate 82. The work box 80 is manually pulled out of the hole. The slide plate 82 is movably supported on the floor 16 like the grip 70, and is operated by a jack 84 (FIG. 1) to take a storage position and a work position.
[0043]
A hydraulic unit 90 and other necessary equipment for operating the jack are mounted on the floor 16.
[Brief description of the drawings]
FIG. 1 is a plan view of a tunnel repair device according to the present invention.
FIG. 2 is a cross-sectional view taken along line 2-2 of FIG.
FIG. 3 is a left side view of FIG. 1 with a part shown in cross section and only one work box.
FIG. 4 is a side view, partly in section, showing details of the main legs and wheels.
5 is a cross-sectional view taken along line 5-5 in FIG. 1. The left half shows a repaired state and the right half shows a moving state.
6 is a cross-sectional view taken along line 6-6 in FIG. 1, in which the left half shows a repaired state and the right half shows a moving state.
7 is a cross-sectional view taken along line 7-7 in FIG. 1. The left half shows a repaired state and the right half shows a moving state.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Tunnel 11 Inner peripheral surface 12 Bogie 14, 54, 56 Work box 16 Floor 18 Main leg 20 Wheel 22 Hydraulic motor 40 Auxiliary leg

Claims (7)

A device used when repairing the inner surface of a tunnel,
And at least three main legs hanging from the floor and supporting the floor substantially horizontally, each main leg having wheels having a caster function for running on the inner peripheral surface of the tunnel. Two main legs and a drive source that drives at least one of the wheels, and a cart that travels by itself by the drive source;
A tunnel repair device comprising: a work box attached to the floor so as to be movable up and down, and having at least one work box formed in a cylindrical shape having an upper end and a lower end as openings. A first side having three work boxes, one work box at the center of the floor, and another work box from the center of the floor to a side perpendicular to the traveling direction of the carriage 2. The apparatus according to claim 1, wherein another one work box is disposed on each of the second side parts that are offset from the center part of the floor toward the side opposite to the first side part. Tunnel repair device. The tunnel repair device according to claim 1, wherein a lower end of the work box has a curved surface that substantially matches a shape of a part of the inner peripheral surface of the tunnel. 4. The gripper according to claim 1, wherein the cart has a gripper operated by a jack that moves in a direction perpendicular to the traveling direction of the cart with respect to the floor and takes a reduced storage position and an extended work position. Repair equipment for tunnels as described in 1. The tunnel repair device according to any one of claims 1 to 4, comprising a plurality of auxiliary legs standing upright from the floor, each means having means for rolling in contact with the inner peripheral surface of the tunnel. The tunnel repair device according to claim 5, wherein the main leg is extendable in the vertical direction. The tunnel repair apparatus according to claim 1, comprising the same number of drive sources as the wheels that independently drive the plurality of wheels.

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