JPH0510480B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a cleaning vehicle for cleaning the inner wall surface of a tunnel.

[Conventional technology]

In the tunnels in which cars drive, lighting is installed on the inner walls, and white-painted interior boards are pasted on the inner walls to improve soundproofing and lighting reflection, but exhaust gas and other substances damage the surfaces of the interior boards. It often becomes contaminated and turns black and must be cleaned.

For this reason, in the past, the inner wall of the tunnel was washed while flowing water using a vertically long rotating brush provided on a tunnel washing vehicle.

[Problem that the invention seeks to solve]

However, when using this method, it is difficult to accurately align the rotating brush along the curved surface of the inner wall of the tunnel, which tends to cause uneven cleaning, and there is a risk of damaging the paint on the surface of the inner wall board. There was a problem.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide an automatic tunnel inner wall surface cleaning vehicle that does not damage the surface of interior panels in a tunnel and can clean the surface evenly.

[Means for solving problems]

As a means for solving the above-mentioned problems, the present invention provides a tunnel inner wall washing vehicle equipped with a device for washing the inner wall surface of a tunnel by spraying high pressure water from a high pressure water injection nozzle onto the wall surface. A stand is rotatably installed on the frame of the vehicle, and a guide rail that guides and moves the nozzle moving cart equipped with a nozzle block for high-pressure water injection in the vertical direction of the inner wall of the tunnel is installed at approximately right angles to the longitudinal direction of the vehicle. The stand is provided via a cylinder so as to be movable on a flat surface, and between the nozzle block and the nozzle moving cart, the nozzle block and the nozzle moving cart are arranged to move on the tunnel inner wall surface according to a preset and memorized shape pattern of the tunnel inner wall surface. A telescopic unit is provided to maintain a constant distance between the nozzle block and the tunnel inner wall surface by expanding and contracting in the right angle direction, and a sensor for detecting the distance between the nozzle block and the tunnel inner wall surface is provided on the guide rail so that the guide rail is always connected to the tunnel wall surface. It is characterized in that the cylinder is controlled so as to be at a constant distance from the inner wall surface of the tunnel.

[Effect]

With this configuration, the guide rail moves vertically along the tunnel inner wall surface, and the nozzle block moves vertically on the guide rail while changing the shape of the tunnel inner wall surface that has been set and memorized in advance. A telescoping unit that expands and contracts in a direction perpendicular to the tunnel inner wall according to a pattern maintains a constant distance from the tunnel inner wall and sprays high pressure water from a high pressure water jet nozzle to clean the tunnel inner wall.

The sensor detects the position of the tunnel inner wall surface, and when the tunnel inner wall surface cleaning vehicle is set at the working position or when the telescopic unit exceeds its allowable range of expansion/contraction after work has started, the cylinder is activated. controlling the guide rail so that it is always at a constant distance from the tunnel inner wall surface by expanding and contracting;
Always keep the distance between the nozzle block and the tunnel inner wall constant.

〔Example〕

Hereinafter, an example of an automatic tunnel inner wall surface cleaning vehicle according to the present invention, which is equipped with a control device that controls the operation of the installed cleaning device in accordance with the cross-sectional shape pattern of the tunnel, will be described based on FIGS. 1 to 3. I will explain.

1 and 2, a cleaning water tank (not shown) and a cleaning device 3 are mounted on a frame 2 of a traveling vehicle 1 with a cab. Swivel bearing 4
a stand 5 rotatably installed on the stand 5; an upper cylinder 6 and a lower cylinder 7 whose proximal ends are rotatably supported on the stand 5, and which are respectively disposed in the left-right direction of the vehicle; and both cylinders 6. . An elevating cylinder 9 connected to the lower cylinder 7 is provided.

Further, the guide rail 8 includes a
A nozzle that moves vertically on the guide rail 8 by a roller chain 11 that is wound around and driven by an encoder-equipped electric motor 10 that is disposed on the inside of the guide rail 8, that is, approximately in the vertical center of the left side of the guide rail 8 in FIG. A movable cart 12 is attached to the nozzle moving cart 12, and the washing water from the washing water tank is pressurized by a high-pressure water pump (not shown) installed on the frame 2 and sent out to the outside of the nozzle moving cart 12. A nozzle block 14 that injects high-pressure water toward the inner wall surface 13a of the tunnel 13 is provided via a telescoping unit 15. The tip of the nozzle block 14 is driven to expand and contract by an electric motor 16 so that it can move forward or backward toward or away from the inner wall surface 13a of the tunnel 13.

Further, on the outside of the substantially center of the guide rail 8 in the vertical direction, that is, on the opposite side of the mounting position of the encoder-equipped electric motor 10, there is provided a column 1 having a sensor 17 at its tip.
8 is erected substantially vertically so as not to interfere with the movement of the nozzle moving carriage 12.

This sensor 17 detects the position of the tunnel inner wall surface 13a, and when the tunnel inner wall surface cleaning vehicle is set at the working position and when the telescopic unit 15 exceeds the allowable range of the amount of expansion and contraction, the control device detects the position of the tunnel inner wall surface 13a. The upper cylinder 6 and the lower cylinder 7 are automatically expanded and contracted to control the guide rail so that it is always at a constant distance from the tunnel inner wall surface,
The distance between the nozzle block 14 and the tunnel inner wall surface 13a is always kept constant.

Furthermore, on the frame 2 of the traveling vehicle 1,
An operation panel 19 is installed, which serves as an operation unit for a control device (not shown), which is equipped with a storage device that stores in advance a large number of patterns of tunnel cross-sectional shapes classified according to the radius of curvature of the tunnel, and a processing device that has a comparison calculation function. Although not shown, the operation panel 19 has a section for inputting data on the moving speed of the nozzle moving cart 12 that moves vertically on the guide rail 8, data on the cleaning range in the vertical direction, etc. Digi switch, select switch for changing various states such as data input and stop, operation and stop of the high-pressure water pump, automatic operation and manual operation of the cleaning device 3, work start preparation switch for setting the guide rail 8 in a predetermined position, and nozzle. A start switch for the mobile cart 12 and the like are provided.

Further, the operation panel 19 includes the storage device;
A control panel is provided which selects a tunnel pattern to be cleaned from the pattern data stored in this storage device and also includes a control device for controlling the operation of the cleaning device 3.

FIG. 3 also shows that a nozzle block 20 for an inspection path, which is used when cleaning a tunnel with an inspection path, is attached to a nozzle moving cart 12 which is movable in the vertical direction on a guide rail 8. The inspection path nozzle block 20 is shown attached in place of the nozzle block 14. The inspection path nozzle block 20 is fixed to the tip of the telescopic unit 15, and has two upper and lower legs on the outside of the lower part of an arm portion 20a extending downward from the tip. The handrail 2 is equipped with injection nozzles 20b, 20b, and is connected to the running road surface side of the inspection road 21b provided at the lower part of the inner wall surface 21a of the tunnel 21.
0c, the injection nozzles 20b, 2
0b can be arranged inside the handrail 21c, and by using the nozzle block 20 for the inspection path, even if a handrail etc. is connected to the inspection path 21b, the inner wall surface where the inspection path 21b is provided can be The entire area from the bottom to the top of 21a can be efficiently cleaned.

The cleaning device 3 configured in this way and mounted on the frame 2 of the vehicle 1 has a stand 5 which is rotatably installed upright via the previous bearing 4, and the stand 5 is attached to the swing bearing 4.
The nozzle block 14 is rotated by the pinion gear of the electric motor 22 meshed with the internal gear of the nozzle block 14.
By changing the high-pressure water injection direction by 180°, it is possible to clean the inner wall surface 13a on both the left and right sides with respect to the direction of travel of the vehicle.In addition, by expanding and contracting the depression cylinder 9, for example, the side wall of the tunnel 13 can be cleaned. It can be set at any position on the tunnel wall surface, such as when cleaning a section (as shown in FIG. 1) or when cleaning a ceiling (as shown in FIG. 2).

In addition, 23 is a gutter part cleaning nozzle that cleans the gutter part 13b of the tunnel 13 by jetting high-pressure water while swinging, and 24 is the gutter part cleaning nozzle for cleaning the gutter part 13b of the tunnel 13.
This is a lighting fixture installed on the inner wall surface 13a of No. 3.

Next, the operation of this embodiment configured as described above will be explained.

In the cleaning operation, the vehicle 1 equipped with the cleaning device 3 is placed on standby on the road surface at a position close to the inner wall surface 13a of the tunnel 13 to be cleaned. After selecting the desired pattern and inputting data such as the moving speed of the nozzle moving cart and the cleaning range in the vertical direction, and specifying the automatic operation mode with the select switch, when the work start preparation switch is turned on, the upper cylinder 6, The lower cylinder 7 and the depression cylinder 9 each operate to move the guide rail 8 to which the nozzle moving cart 12 is attached.
is automatically set in a predetermined position so as to face the wall surface to be cleaned.

At this time, the pillar 18 erected on the guide rail 8
A sensor 17 at the tip of the nozzle block 14 detects the position of the inner wall surface 13a, and controls the nozzle block 14 provided on the nozzle moving cart 12 to be at a predetermined distance from the inner wall surface 13a.

Next, when the nozzle moving cart start switch on the operation panel 19 is turned on and the drive switch of the high-pressure water pump is also turned on, the nozzle moving cart 12 starts moving on the guide rail at the set moving speed. While reciprocating the cleaning range in the vertical direction and repeating upward and downward movements, the nozzle moving cart 1
The nozzle block 14 installed in the tunnel 13 via the telescopic unit 15 always maintains a constant distance from the inner wall surface 13a by expanding and contracting the telescopic unit 15 according to a preselected pattern, and adjusts the radius of curvature of the tunnel 13. The nozzle block 14 moves along the nozzle block 14, and high-pressure water is injected toward the inner wall surface 13a from the tip of the nozzle block 14 to clean the inner wall surface 13a evenly and evenly. The inner wall surface 13a of the tunnel 13 is automatically cleaned while traveling at low speed.

Further, the gutter portion 13b of the tunnel 13 is cleaned by spraying high-pressure water downward from the gutter portion cleaning nozzle 23 provided on the frame 2 of the traveling vehicle 1 while swinging the gutter portion cleaning nozzle 23 to clean the inner wall surface 13a. This is done in parallel and at the same time as the cleaning. Further, although not shown, a post-washing device is provided which sprays washing water from a shower type nozzle to wash away dirt adhering to the cleaning surfaces of the inner wall surface 13a and the gutter portion 13b.

When the vehicle 1 that is traveling at low speed meandering while performing the cleaning work, the sensor 17 that comes into contact with the inner wall surface 13a detects the nozzle block 1.
4 and the inner wall surface 13a is wider than a predetermined value,
Alternatively, the distance between the nozzle block 14 and the inner wall surface 13a becomes constant by detecting that the nozzle block 14 has become narrower, measuring the displacement from the set distance, and automatically expanding and contracting the upper cylinder 6 and the lower cylinder 7. control to prevent uneven cleaning.

Further, when cleaning a tunnel with an inspection path, the nozzle block 20 for the inspection path can be attached in place of the nozzle block 14, and cleaning work can be carried out in substantially the same manner.

Although this embodiment describes the case of cleaning the inner wall surface of a tunnel with a circular cross section, the automatic tunnel inner wall surface cleaning vehicle according to the present invention can similarly perform cleaning work on the inner wall surface of a tunnel with a rectangular cross section. can be done.

Further, the operation panel 19 may be arranged inside the cab of the traveling vehicle 1. Furthermore, if the traveling vehicle 1 is equipped with a hydraulic motor for traveling during work in addition to the engine for general driving, the traveling speed during work can be made extremely low. Furthermore, it is possible to equip a detergent spraying device, an abrasive device, etc. for cleaning stubborn dirt on the inner wall surface 13a, as well as a road white line cleaning device,
Attachments such as a guardrail cleaning device, a ground covering cleaning device, a handrail cleaning device, and a handheld gun cleaning device can also be installed as appropriate.

〔Effect of the invention〕

As described above, the tunnel inner wall automatic cleaning vehicle according to the present invention has a nozzle moving cart equipped with a nozzle block for high-pressure water injection on a stand that is rotatably installed on the frame of a vehicle equipped with a high-pressure water pump. A guide rail that guides and moves in the vertical direction of the inner wall surface of the tunnel is provided so as to be movable on a plane substantially perpendicular to the longitudinal direction of the vehicle via a cylinder, and a guide rail that is set in advance is provided between the nozzle block and the nozzle moving cart. A telescopic unit is interposed that expands and contracts in a direction perpendicular to the tunnel inner wall surface according to the stored shape pattern of the tunnel inner wall surface to maintain a constant distance between the nozzle block and the tunnel inner wall surface, and a telescopic unit is provided on the guide rail. A sensor is provided to detect the distance to the tunnel inner wall surface, and the cylinder is controlled so that the guide rail is always at a constant distance from the tunnel inner wall surface, so that the guide rail moves vertically along the tunnel inner wall surface. In addition, the nozzle block moves vertically on the guide rail and expands and contracts in a direction perpendicular to the tunnel inner wall surface according to a shape pattern of the tunnel inner wall surface that has been set and memorized in advance. The tunnel inner wall surface can be cleaned by jetting high pressure water from the high pressure water injection nozzle while maintaining a constant distance from the wall surface.Moreover, the position of the tunnel inner wall surface can be detected by the sensor and the tunnel inner wall surface can be cleaned. When the cleaning vehicle is set at the working position or when the telescopic unit exceeds its allowable range of expansion/contraction after work has started, the cylinder is expanded/contracted to keep the guide rail at a constant distance from the tunnel inner wall surface. Since the distance between the nozzle block and the tunnel inner wall surface is always kept constant through such control, the surface of the interior panel inside the tunnel is not damaged and cleaning can always be done evenly and efficiently.

[Brief explanation of drawings]

The figures show an embodiment of an automatic tunnel inner wall washing vehicle according to the present invention. Fig. 1 is a rear view showing a state in which the side wall portion of the tunnel inner wall surface is being cleaned, and Fig. 2 is a rear view showing the condition in which the side wall portion of the tunnel inner wall surface is cleaned. FIG. 3 is a rear view showing a state in which cleaning is performed. FIG. 3 is a rear view showing a state in which a tunnel with an inspection path is cleaned. DESCRIPTION OF SYMBOLS 1... Traveling vehicle, 2... Frame, 3... Cleaning device, 4... Swivel bearing, 5... Stand, 6...
Upper cylinder, 7... lower cylinder, 8... guide rail, 9... depression cylinder, 12... nozzle moving trolley, 13a... inner wall surface of tunnel, 13b...
...Gutter part, 14...Nozzle block, 15...
...Telescopic unit, 17...Sensor, 19...Operation panel, 20...Nozzle block for inspection path.

Claims (1)

[Claims] 1. In a tunnel inner wall cleaning vehicle equipped with a device that cleans the tunnel inner wall surface by spraying high pressure water from a high pressure water injection nozzle onto the wall surface, a stand is rotatably installed on the frame of the vehicle equipped with a high pressure water pump. A cylinder is attached to the stand so that a guide rail that guides and moves a nozzle moving cart equipped with a nozzle block for high-pressure water injection in the vertical direction of the inner wall surface of the tunnel can be moved on a plane substantially perpendicular to the longitudinal direction of the vehicle. The nozzle block is provided between the nozzle block and the nozzle moving cart, and the nozzle block and the tunnel inner wall surface are expanded and contracted in a direction perpendicular to the tunnel inner wall surface according to a shape pattern of the tunnel inner wall surface that is set and stored in advance. A telescopic unit is provided to maintain a constant distance from the tunnel, and a sensor is provided to the guide rail to detect the distance from the tunnel inner wall to control the cylinder so that the guide rail is always at a constant distance from the tunnel inner wall. An automatic tunnel inner wall cleaning vehicle that is characterized by the following features: