JP2002146737A - Tunnel upper surface cleaning device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tunnel upper surface cleaning device capable of being efficiently cleaned even if the upper surface of a road tunnel has a curved surface and, at the same time, preventing the scattering of dust or polluted water in the case of cleaning. SOLUTION: The tunnel upper surface cleaning device 2 mounted on a working vehicle 1 includes a support 3 erected on a base 2a, an expansion boom 4 mounted on the support 3 in a turnable manner in the vertical direction and in the horizontal direction, a bracket 5 mounted on the front end of the expansion boom 4 around a pivot in a rotatable manner, a brush cover 6 mounted to the bracket 5 in a rotatable manner and a rotational brush 8 mounted to the brush cover 6 in a state capable of being pivoted. Throating channels 6c and 6d are mounted to the end of an opening of the brush cover 6, water injection nozzle pipes 7a and 7b are provided to the inside thereof, and water is injected on a tunnel upper wall surface to make wet cleaning by the rotational brush 8. The polluted water is discharged to the side of a road by a drain pipe 21 connected to the brush cover 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a road tunnel cleaning apparatus, and more particularly to a vehicle-mounted tunnel top cleaning apparatus for cleaning a tunnel upper wall surface.

[0002]

2. Description of the Related Art Road tunnels have dirty inner walls due to exhaust gas, dust and the like of passing automobiles, and the degree of contamination is particularly high in highway tunnels with heavy traffic. If the degree of contamination on the inner wall of the tunnel increases, the inside of the tunnel becomes darker, the illuminance of the lighting equipment drops, the visibility becomes poor, and a traffic accident may occur. In order to prevent such a situation, the road manager cleans the inner wall of the tunnel, but it is not preferable to perform the cleaning manually from the viewpoint of work safety and efficiency. Car cleaning has been implemented.

[0003] As this type of work vehicle, for example, a work vehicle provided with a rotating brush on the side of the work vehicle is conventionally known, and the work vehicle is driven at a low speed along the inner wall surface of the tunnel by a rotating brush. The inside wall of the tunnel is cleaned.

[0004]

According to the above-mentioned conventional tunnel cleaning device, the side wall surface of the tunnel can be cleaned, but the upper wall surface (ceiling surface) cannot be cleaned, and the cleaning by the rotating brush is of a dry type. A large amount of dust or dust scatters during cleaning, and the dust deteriorates visibility in the tunnel and pollutes air in the tunnel.
As a countermeasure against such dust, for example, there is a work vehicle equipped with a dust collecting device in association with a rotating brush and immediately sucking dust generated during cleaning to prevent scattering, but a satisfactory result is not always obtained. There is no present.

[0005] On the other hand, there has been proposed a work vehicle in which a rotating brush is movably mounted by a telescopic boom so that the upper wall surface of a road tunnel can be cleaned, but the upper wall surface of the tunnel is flat, that is, parallel to the road surface. Can be cleaned,
When the upper wall surface is a curved surface, that is, a non-parallel surface to the road surface, there is a problem that cleaning cannot be sufficiently performed. That is, as shown in FIG. 10, the rotating brush A is usually cylindrical, and
Is a curved surface, the contact area with the rotating brush A is significantly reduced.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned conventional problems, and it is possible to efficiently clean even if an upper wall surface of a road tunnel is a curved surface, and to prevent scattering of dust during cleaning. It is an object to provide a cleaning device.

[0007]

SUMMARY OF THE INVENTION As a technical means for achieving the above-mentioned object, the present invention relates to a tunnel cleaning device mounted on a working vehicle, comprising: a column erected on a base; Telescopic boom mounted to be pivotable up and down and left and right, and a bracket rotatably mounted on the distal end of this telescopic boom about a pivot, and pivotable up and down with respect to this bracket The present invention provides a tunnel top surface cleaning device including a brush cover attached to a brush cover and a rotary brush attached to the brush cover so as to be rotatable about its axis. In this tunnel upper surface cleaning device, the brush cover holds a horizontal position in conjunction with the vertical rotation of the telescopic boom, and the brush cover is formed in a bucket shape that opens upward, A drain channel is attached along the brush cover, and the rotating brush is housed in such a manner that a rotating shaft is supported by both side plates of the brush cover and a part of the outer peripheral surface protrudes above the opening end of the brush cover. A drain hole is provided at the bottom of the brush cover, and a water injection nozzle tube is provided inside the brush cover. When the rotating brush rotates to clean the upper wall surface of the tunnel, water is directed toward the upper wall surface. A drain pipe is connected to a drain hole of the brush cover, and the drain pipe drains sewage collected at the bottom of the brush cover to the side of the road; Later, a water truck is connected and run, and water is supplied from the water vehicle to the water injection nozzle pipe. When the work vehicle is forwarded, the connection of the water vehicle is released and a telescopic boom is provided on the base. And rotating the brush cover downward to hold the rotating brush backward, that a base is formed detachably with respect to the carrier part of the work vehicle, and that the work vehicle is driven by a drive source. The operation of the telescopic boom and the brush cover is performed by a hydraulic cylinder, and the rotation of the rotating brush is performed by a hydraulic motor. The hydraulic oil is supplied to these hydraulic cylinders and the hydraulic motor from the hydraulic outlet of the working vehicle via piping. That is, it is characterized.

According to the present invention, the rotating brush is housed in the brush cover with a part thereof protruding from the opening end of the brush cover, and is rotated together with the brush cover around the pivot shaft of the bracket to be inclined. Therefore, even if the upper wall of the road tunnel has a curved surface, the contact area with the curved surface is increased by rotating the rotating brush by a predetermined angle, whereby the upper wall can be efficiently cleaned. In addition, since the dust is not scattered because it is covered with a bucket-shaped brush cover during cleaning, wet cleaning can be performed by spraying water toward an upper wall portion from a water spray nozzle tube provided inside the brush cover. It is possible. Sewage generated by wet cleaning can be drained to the side of the road by a drain pipe connected to a drain hole provided at the bottom of the brush cover.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a preferred embodiment of a tunnel top surface cleaning apparatus according to the present invention will be described with reference to the accompanying drawings. FIG. 1 is a side view showing a tunnel upper surface cleaning device 2 mounted on a work vehicle 1, and FIG. 2 is a plan view thereof.
a.

The work vehicle 1 includes a hydraulic device and a power take-off device (PTO) as drive sources. These devices use the engine of the work vehicle 1 as a power source, and when the tunnel top surface cleaning device 2 is mounted. No other power source is required.

The structure of the tunnel upper surface cleaning device 2 will be described. A column 3 is erected on the base 2a, and a telescopic boom 4 is provided at the upper end of the column 3 via a first hydraulic cylinder S1. As shown by an imaginary line in FIG. 1, a predetermined angle in the vertical direction (preferably 75 °: 45 ° above the horizontal position)
°, downward 30 °), and a predetermined angle (preferably 60 °) in the left-right direction via the second hydraulic cylinder S2 as shown by a virtual line in FIG.
(°: 30 ° left and right from the center position).

The telescopic boom 4 has a double structure having a telescopic part 4a at the tip end, and can be expanded and contracted by a hydraulic cylinder (not shown) built in a base part to extend and retract (the maximum stroke is (About 1300 mm). At the distal end of the telescopic part 4a of the telescopic boom 4, a U-shaped brat 5 is connected via a third hydraulic cylinder S3 as shown in FIG.
As shown by an imaginary line, it is mounted to be rotatable around a pivot shaft 5a within a predetermined angle (preferably 70 °: 35 ° vertically from a horizontal position).

A bucket-shaped brush cover 6 that opens upward is pivotally supported at the tip end of the bracket 5 and is attached to the bracket 5 so as to be rotatable in the vertical direction. A fourth hydraulic cylinder S4 is mounted between the brush cover 6 and the bracket 5, so that the brush cover 6 can be always held at a horizontal position when the telescopic boom 4 turns vertically. That is, the fourth hydraulic cylinder S4 is connected to the fifth hydraulic cylinder S5 attached in association with the telescopic boom 4 to form a hydraulic closed circuit. The configuration is such that the hydraulic cylinders are linked.

Inside the open end of the brush cover 6, water jet nozzle pipes 7a and 7b are provided along the width direction of the brush cover 6, and drain ends are provided at both ends of the bottom formed in a substantially ship bottom shape. A hole 6a is provided. A cylindrical rotary brush 8 is rotatably accommodated in the brush cover 6, and the outer peripheral portion of the rotary brush 8 partially projects upward from the open end of the brush cover 6. The rotating brush 8 is rotated by a hydraulic motor 9 (FIG. 4) attached to one end of the bracket 5.

Further, brush-like drainage channels 6c and 6d (see FIGS. 1 and 2) are attached along the open end of the brush cover 6 so as to surround the open end. The channel 6c is formed of a relatively soft material with a relatively long bristle feet, and the left and right draining channels 6d are formed of a hard material with a relatively short bristle feet. These draining channels 6c, 6d
During cleaning by the rotating brush 8, the gap between the opening end of the brush cover 6 and the tunnel upper surface is closed by contacting the upper surface of the tunnel, and polluted water generated by the rotation of the rotating brush 8 is drained. It works to prevent scattering. As a result, the polluted water does not scatter around and does not contaminate the passing vehicles, the inner wall surface of the tunnel, the road surface, and the like.

The first to third hydraulic cylinders S1 to S3 and the hydraulic motor 9 are supplied with hydraulic oil from a hydraulic oil tank 10 installed on a base 2a by a hydraulic pump 11, a control valve (not shown). ) And supplied via a pipe, respectively, and the hydraulic pump 11 can be driven by the drive source of the working vehicle 1.

An operation seat 12 is provided on the base 2a. An operator operates the operation panel 13 while sitting on the operation seat 12 to move the telescopic boom 4 and the like, thereby controlling the position and attitude of the rotary brush 8. I can do it. The operation seat 12 is formed so as to be slidable along the guide rail 14 as shown in FIG. 2 and has a structure capable of rotating by 180 °.

FIG. 1 shows a state before the work, which is indicated by a solid line, and the telescopic boom 4 is supported in a downwardly inclined state by a holding column 15 erected on the base 2a. When the work vehicle 1 is not working or is being forwarded, the brush cover 6 is rotated to the position indicated by the imaginary line so that the rotating brush 8 faces backward, and the amount of protrusion toward the rear is reduced. This can be easily performed by removing the stop pin P at the end of the fourth hydraulic cylinder S4 and turning the brush cover 6 downward (clockwise). After the rotation, the brush cover 6 is fixed by locking the distal end of the fourth hydraulic cylinder S4 to the distal end of the fastener 6b attached to the side of the brush cover 6 with the stop pin P.

A spring lock 16 is mounted between both sides of the base 2a and the rear wheel shaft of the work vehicle 1. Although this spring lock 16 does not interfere with the rotation of the rear wheel axle, it prevents the spring of the rear wheel from damping to prevent the base 2a from swinging during traveling, thereby stabilizing the tunnel cleaning device 2. Things. In FIG. 1, reference numeral 17 denotes a flexible cable bear (registered trademark) penetrating a hydraulic hose, an electric wiring, and the like, which protects a pipe, a wiring, and the like by following the movement of the rotating brush 8.

Next, a case where the upper wall of the road tunnel is cleaned will be described. At the time of this cleaning, as shown in FIG. 6, a water supply truck 18 is connected after the work vehicle 1 via a towing rod 19 and the like, and the water injection nozzle pipes 7a and 7b of the brush cover 6 and a water supply port of the water supply vehicle 18 are connected. 18a with a water supply hose 20 and a drain hole 6a of the brush cover 6.
Is connected to a Y-shaped drain pipe 21 as shown in FIG. The drain pipe 21 has a required length, and it is preferable that the drain pipe 21 be temporarily fixed to a side portion of the work vehicle 1 and the tip end be directed to the side of the road.

FIG. 3 shows a case where the cross section of the tunnel is rectangular. The posture of the rotary brush 8 is controlled according to the height of the upper wall surface T1 of the tunnel prior to the cleaning operation. In this attitude control, the first hydraulic cylinder S1 is operated from the state shown by the solid line in FIG. 1, and the telescopic boom 4 is turned upward as shown by the phantom line, so that the outer peripheral portion of the rotating brush 8 hits the upper wall surface T1. Stop when touched. Position T1a where upper wall surface T1 is high
, The extendable portion 4a of the extendable boom 4 is extended to bring the rotating brush 8 into contact.

At this time, the fifth hydraulic cylinder S5 is actuated to move the fourth hydraulic cylinder S4 in conjunction with the upward turning of the telescopic boom 4, whereby the brush cover 6 is rotated downward to constantly rotate the brush cover 6. It can be held in a horizontal position. Therefore, the brush cover 6 does not incline and collide with the upper wall surface T1.

In order to bring the rotating brush 8 into contact with the position T1b near the center of the upper wall surface T1, the second hydraulic cylinder S2 is operated as shown by the phantom line in FIG. It is rotated by a predetermined angle laterally with respect to the traveling direction. At this time, the rotating shaft 8a of the rotating brush 8 is not in a direction perpendicular to the traveling direction of the work vehicle 1 but in an inclined state, but the rotation of the rotating brush 8 is not hindered.

In the positioning of the rotating brush 8 with respect to the upper wall surface T1, the road R is usually provided with a gradient θ (inclined downward from the central region toward both sides) as shown in FIG. Is loose, the rotating shaft 8a of the rotating brush 8 and the upper wall surface T1 are substantially parallel to each other, and there is no gap between the rotating brush 8 and the upper wall surface T1, but when the tunnel is curved, In some cases, the gradient θ becomes steep and a gap may be formed between the rotating brush 8 and the upper wall surface T1. In this case, the third hydraulic cylinder S3 is operated to rotate the bracket 5 around the pivot shaft 5a by a predetermined angle, and the rotating brush 8 is inclined to eliminate the gap generated between the bracket 5 and the upper wall surface T1. can do.

After positioning the rotary brush 8 with respect to the upper wall surface T1, the work vehicle 1 and the water supply vehicle 18 are run at low speed along the side wall of the tunnel in a connected state, and the water injection nozzle pipes 7a and 7b The upper wall surface T1 is cleaned by rotating the rotating brush 8 while spraying water toward T1.

As described above, the rotating brush 8 is covered by the brush cover 6, and the draining channels 6c and 6d at the open end of the brush cover 6 are in contact with the upper wall surface T1, so that the rotating brush 8 scrapes the rotating brush 8 off. Dust and contaminated water are not scattered to the surroundings, and the dust is hardly generated because of the wet cleaning while spraying water. The sewage generated at this time accumulates at the bottom of the brush cover 6 and flows into the drain pipe 21 from the drain hole 6a, and is discharged to the side of the road by the drain pipe 21.

The water jet nozzle pipes 7a and 7b are located before and after the rotary brush 8, and the jet water from the water jet nozzle pipe 7a located in front of the rotary brush 8
Immediately before washing, the upper wall surface T1 is wetted, and the jet water from the water jet nozzle pipe 7b located behind the rotating brush 8 acts to wash the upper wall surface T1 immediately after washing the rotating brush 8. Therefore, the cleaning residue by the rotating brush 8 is washed away without remaining on the upper wall surface T1.

By passing through the tunnel once or twice,
Although cleaning of the upper wall surface T1 corresponding to one lane is completed, it is preferable to perform cleaning work without interrupting traffic in the tunnel as much as possible. Particularly in the case of a highway tunnel, traffic control is performed to avoid danger. Sufficient consideration such as performing is necessary.

FIG. 4 shows a case where the cross section of the tunnel is circular. Also in this case, prior to the cleaning operation, the posture of the rotary brush 8 is controlled according to the height of the curved upper wall surface T2 of the tunnel. That is, the first hydraulic cylinder S1 is actuated to pivot the telescopic boom 4 upward, and the third hydraulic cylinder S3 is actuated to pivot the rotary brush 8 via the bracket 5 to tilt and rotate the rotary shaft. 8a and the tangent L of the curved upper wall surface T2 at that location are positioned so as to be substantially parallel.

The position T2a where the curved upper wall surface is high as shown in FIG.
, The telescopic boom 4 is further extended and positioned so that the rotating brush 8 contacts. In order to bring the rotating brush 8 into contact with the position T2b near the center of the curved upper wall,
By operating the second hydraulic cylinder S2, the telescopic boom 4
Is rotated by a predetermined angle to the side with respect to the traveling direction of the work vehicle 1. At this time, the rotating shaft 8a of the rotating brush 8 is
It is not in a direction perpendicular to the traveling direction but in an oblique state, but the rotation of the rotating brush 8 is not hindered.

In the positioning of the rotary brush 8, even if the road in the tunnel has a slope as described above, the rotary brush 8 via the bracket 5 is used.
By adjusting the angle at the time of turning, it can be easily handled.

The cleaning method using the rotating brush 8 is the same as that in the case of the rectangular tunnel. The work vehicle 1 and the water supply truck 18 are run at a low speed along the side wall of the tunnel in a connected state.
Cleaning is performed by rotating the rotating brush 8 while spraying water from the water spray nozzle pipes 7a and 7b toward the curved upper wall surface T2.

Also in this case, the rotating brush 8 is covered with the brush cover 6, and the open end of the brush cover 6 is close to the curved upper wall surface T2, so that the dust scraped off by the rotating brush 8 is removed from the surroundings. The dust is hardly scattered, and the dust is hardly generated due to the wet cleaning while spraying water. The sewage generated by the cleaning is collected at the bottom of the brush cover 6 and discharged to the side of the road through the drain pipe 21 from the drain hole 6a.

The jet water from the water jet nozzle pipe 7a located in front of the rotary brush 8 wets the curved upper wall surface T2 immediately before the cleaning of the rotary brush 8, and the water jet from the water jet nozzle pipe 7b positioned behind the rotary brush 8. Sprays the curved upper wall surface T2 with water immediately after the rotating brush 8 is washed. Accordingly, the cleaning residue by the rotating brush 8 is cleaned without remaining on the curved upper wall surface T2.

After the rectangular or circular tunnel upper wall surface is cleaned, the tow rod 19 and the water supply hose 20 are disconnected to disconnect the water supply truck 18. When the telescopic beam 4 is at the position where the telescopic beam 4 has swung right and left, the second hydraulic cylinder S2 is operated to return to the center position, and the first hydraulic cylinder S1 is operated to pivot downward, It is returned to the state in which it is supported by the holding column 15 (the state shown by the solid line in FIG. 1).

In this state, when the drain pipe 21 is removed from the drain hole 6a of the brush cover 6 and the retaining pin P is removed, the brush cover 6 rotates downward, and the rotating brush 8 is in a rearward state. After the rotation, the brush cover 6 is fixed by locking the distal end of the fourth hydraulic cylinder S4 to the distal end of the fastener 6b attached to the side of the brush cover 6 as described above with the stop pin P. Fix it.

After the tunnel upper surface cleaning device 2 is returned to its original state in this way, the work vehicle 1 and the water supply truck 18 are sent to predetermined locations. The work vehicle 1 and the water vehicle 18 may be kept on standby until the next cleaning request is issued. However, the work vehicle 1 removes the tunnel cleaning device 2 to remove other work devices such as a crane, a backhoe, a mower, Equipped with a sweeper etc., it can be effectively used as a work vehicle for road construction or road maintenance, and the water supply truck 18 can also be used as a watering or high pressure road surface washing vehicle by attaching a water sprayer, a spray gun, etc. it can.

FIG. 8 shows a state in which the tunnel upper surface cleaning device 2 is detached from the work vehicle 1. Jacks J are respectively attached to the four corners of the base 2a, the base Ja of the jack J is grounded, and the handle Jb is attached. Is turned to raise the base 2a, and the joint K between the base 2a and the carrier 1a of the work vehicle 1 is released. At this time, the lock pins 16a and 16b of the spring lock 16 are removed to release the connection with the rear axle.

Thereafter, if the work vehicle 1 is gently advanced, the work vehicle 1 and the tunnel upper surface cleaning device 2 can be completely separated. It is of course possible to reconnect the work vehicle 1 and the tunnel upper surface cleaning device 2 by the reverse procedure. After the separation, the tunnel upper surface cleaning device 2 remains supported by the four jacks J. However, since the stability is not good, it is preferable to insert an appropriate cradle (not shown) or the like to support the base 2a. In FIG. 9, 2
Reference numeral 2 denotes a drainage pipe fixing device provided at the center of the rear end of the base 2a. The drainage pipe 21 when not in use is detachably attached to the drainage pipe fixing device 22.

[0040]

As described above, the present invention relates to an apparatus for cleaning the upper surface of a tunnel mounted on a work vehicle, the rotating brush of which is vertically and / or horizontally rotated through an extendable boom, and is provided with a bracket. By adjusting the inclination angle through the above, the upper wall surface of the tunnel having a rectangular or circular cross section can be efficiently cleaned. The rotating brush is covered by a bucket-shaped brush cover that opens upward, and the drain channel at the opening end of the brush cover contacts the upper wall surface of the tunnel, so that dust and contaminated water generated during cleaning scatter around. This is a wet cleaning in which water is sprayed from a water jet nozzle tube disposed inside the brush cover toward the upper wall surface, and the dust is hardly generated. Sewage generated by the cleaning is expediently discharged from a drain hole formed at the bottom of the brush cover to the side of a road through a drain pipe connected to the drain hole.

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment of a tunnel upper surface cleaning device according to the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is an explanatory view showing a state in which an upper wall surface of a rectangular tunnel is cleaned.

FIG. 4 is an explanatory view showing a state in which an upper wall surface of a tunnel having a circular cross section is cleaned.

FIG. 5 is an explanatory view showing a state in which a high upper wall surface is also cleaned in a circular tunnel.

FIG. 6 is a schematic diagram showing a state in which a water truck is connected behind a work vehicle.

FIG. 7 is a schematic view of a drain pipe.

FIG. 8 is a schematic side view showing a state when a work vehicle and a tunnel upper surface cleaning device are separated.

FIG. 9 is also a rear view.

FIG. 10 is an explanatory diagram of a conventional technique.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Work vehicle 1a ... Carrying part 2 ... Tunnel upper surface cleaning device 2a ... Base 3 ... Strut 4 ... Telescopic boom 5 ... Bracket 6 ... Brush cover 6a ... Drain hole 6b ... Fasteners 6c, 6d ... Drainage channels 7a, 7b ... Water Injection nozzle tube 8 ... Rotating brush 9 ... Hydraulic motor 10 ... Hydraulic oil tank 11 ... Hydraulic pump 12 ... Operation seat 13 ... Operation panel 14 ... Guide rail 15 ... Holding support 16 ... Spring lock 17 ... Flexible cable carrier 18 ... Water truck 18a ... water inlet 19 ... towing rod 20 ... water supply hose 21 ... drain pipe 22 ... drain pipe fixing device

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Yasushi Kawakubo 1117 Kawamukai-cho, Tsuzuki-ku, Yokohama-shi, Kanagawa Prefecture F-term in Western Corporation (Reference) 3B116 AA36 AB51 BA02 BA14 BA34 BA35 CD22 CD31 3B201 AA36 AB56 BA02 BA14 BA35 BB22 BB92 CB25 CC01 CD31

Claims (9)

[Claims] 1. A tunnel cleaning device mounted on a working vehicle, comprising: a column erected on a base; a telescopic boom attached to the column so as to be pivotable in vertical and horizontal directions; A bracket attached to the distal end so as to be rotatable around a pivot shaft, and a brush cover attached to the bracket so as to be rotatable in a vertical direction,
A rotating brush attached to the brush cover so as to be rotatable about a shaft; 2. The tunnel upper surface cleaning device according to claim 1, wherein said brush cover keeps a horizontal position in conjunction with a vertical rotation of a telescopic boom. 3. The brush cover is formed in a bucket shape that opens upward, a drain channel is attached along an opening end thereof, and the rotating brush has a rotating shaft supported by both side plates of the brush cover. The tunnel top surface cleaning device according to claim 1 or 2, wherein a part of the outer peripheral surface is housed so as to protrude above the opening end of the brush cover, and a drain hole is provided at a bottom portion of the brush cover. 4. A water jet nozzle tube is provided inside the brush cover, and when the rotating brush rotates to clean an upper wall surface of the tunnel, water is jetted toward the upper wall surface. Or the tunnel top surface cleaning device according to 3. 5. The tunnel top surface cleaning device according to claim 1, wherein a drain pipe is connected to a drain hole of the brush cover, and the drain pipe drains sewage collected at the bottom of the brush cover to a side of a road. 6. The tunnel top surface cleaning device according to claim 1, wherein a water vehicle is connected to the work vehicle and the water vehicle is run, and water is supplied from the water vehicle to the water injection nozzle pipe. 7. When the work vehicle is not working or is being forwarded, the connection of the water supply truck is released to fix the telescopic boom to the holding column provided on the base, and the brush cover is rotated downward to rotate the rotating brush. 1, 2, 3,
7. The tunnel top surface cleaning device according to 4, 5, or 6. 8. The tunnel upper surface cleaning device according to claim 1, wherein a base is formed so as to be detachable from the carrier part of the work vehicle. 9. The work vehicle has a drive source, the telescopic boom and the brush cover are operated by a hydraulic cylinder, and the rotary brush is rotated by a hydraulic motor. The hydraulic oil is supplied to these hydraulic cylinders and the hydraulic motor by a work. Claims 1, 2, 3, 4, 5, 6, and 7, which are made through a pipe from a hydraulic pressure outlet of the car.
9. The tunnel top surface cleaning device according to 7 or 8.