JP2020159059A - Tunnel ceiling surface grinding/cleaning method and grinding/cleaning device - Google Patents

Abstract

To provide a tunnel ceiling surface grinding/cleaning method capable of efficiently and speedily grinding and cleaning a ceiling surface of a relatively small tunnel through which a transport vehicle cannot pass.SOLUTION: Provided is a tunnel ceiling surface grinding/cleaning method using a tunnel ceiling surface grinding/cleaning device 1 in which a ceiling surface 50a of a tunnel 50 is ground and cleaned by repeating the following steps for each movement span SP of a base frame 2: a fixing step of fixing the base frame 2 that moves a prescribed movement span SP corresponding to a movable range of the tunnel 50 in an extending direction (longitudinal direction) along a movement rail 3 of a dry grinding/cleaning apparatus 4; and a grinding/cleaning step of moving the dry grinding/cleaning apparatus 4 along the movement rail 3 of the base frame 2 fixed in the fixing step in the extending direction (longitudinal direction) of the tunnel 50 and in the lateral direction orthogonal thereto, to grind and clean the ceiling surface 50a of the tunnel 50.SELECTED DRAWING: Figure 1

Description

The present invention relates to a tunnel ceiling surface cleaning method and a cleaning device for cleaning the ceiling surface of a box culvert type tunnel with a dry sweeper.

For example, many box culvert type tunnels have been constructed on highways and other general roads, and many of them have been in service for more than 30 years. For this reason, various repair works are being carried out on old tunnels, including prevention of concrete pieces from falling off. For example, when performing surface treatment work (ground adjustment work) by cleaning the inner wall surface of a tunnel as this repair work, it is common to carry out the work while restricting the use of the road with at least one lane of the road in service. It is necessary to carry out the work efficiently and speedily within a limited time.

Therefore, for example, Patent Document 1 proposes a tunnel ceiling surface cleaning device capable of efficiently and speedily cleaning the ceiling surface of a box culvert type tunnel. This tunnel ceiling surface sweeping device includes an elevating mechanism, a dry sweeper installed on the elevating mechanism so as to be movable in the front-rear direction (extending direction of the tunnel) and the width direction (lateral direction), and the elevating and lowering. It is configured to include an outrigger for adjusting the height of the mechanism, and performs the required cleaning work while mounted on the transport vehicle. Specifically, with the transport vehicle moving in the tunnel stopped at a predetermined cleaning work position, the dry sweeper of the tunnel ceiling surface sweeper mounted on the transport vehicle is moved in the front-rear direction and the width direction. While moving in the (horizontal direction), the work of sweeping the tunnel ceiling surface with the dry sweeper is repeated.

Japanese Unexamined Patent Publication No. 2017-040103

However, the tunnel ceiling surface cleaning device proposed in Patent Document 1 is limited to use in a relatively large box culvert type tunnel capable of carrying a transport vehicle, for example, a transport vehicle such as a drainage ditch travels. There is a problem that it cannot be used for relatively small box culvert type tunnels that cannot be used.

The present invention has been made in view of the above problems, and an object of the present invention is to efficiently and speedily clean the ceiling surface of a relatively small box culvert type tunnel through which a transport vehicle cannot pass. The purpose is to provide a tunnel ceiling surface cleaning method and a cleaning device.

The method of the present invention is a tunnel ceiling surface cleaning method using a tunnel ceiling surface cleaning device for cleaning the ceiling surface of a box culvert type tunnel with a dry sweeper, and is the tunnel ceiling surface polishing method. The sweeping device can move along the base frame portion that can move in the tunnel and the moving rail portion attached to the upper surface portion of the base frame portion in the extending direction of the tunnel and the lateral direction orthogonal to the extension direction. The dry sweeper and a traveling moving member attached to the lower end of the base frame portion to move the base frame portion along the bottom surface of the tunnel in the extending direction of the tunnel. The fixing step of fixing the base frame portion and the fixing step of moving a predetermined moving span corresponding to the movable range of the tunnel in the extending direction of the tunnel along the moving rail portion of the dry sweeper. Along the moving rail portion of the base frame portion fixed in the process, the dry sweeper is moved in the extending direction of the tunnel and the lateral direction orthogonal to the extension direction to clean the ceiling surface of the tunnel. This is a method of cleaning the ceiling surface of the tunnel by repeating the cleaning step for each movement span of the moving frame.

Here, a traveling guide rail member is laid on the bottom surface of the tunnel along the extending direction of the tunnel, and the traveling moving member is guided along the traveling guide rail member to guide the traveling guide rail member. It is preferable that the base frame portion moves in the extending direction of the tunnel.

Further, the traveling guide rail member may be composed of channel steel laid with the opening surface facing upward, and the traveling moving member may be composed of a chill tank that moves along the traveling guide rail member. ..

Further, the traveling guide rail member may be made of angle steel laid with a corner as a top, and the traveling moving member may be made of a door roller member.

Then, the traveling guide rail member is configured by connecting a plurality of unit rail members in the extending direction of the tunnel, and the unit rail member at the rear end portion through which the base frame portion has passed is removed and the unit rail member is removed. A method of moving the base frame portion along the traveling guide rail member may be adopted by repeating the work of connecting the unit rail member at the front end portion to the front.

Further, the base frame portion includes a jack member capable of extending in the lateral direction, and the base frame portion is generated by a reaction force received from the inner surface of the side wall when the pressing surface of the jack member is pressed against the inner surface of the side wall of the tunnel. May be fixed.

The apparatus of the present invention is a tunnel ceiling surface sweeping device for sweeping the ceiling surface of a box culvert type tunnel with a dry sweeper, and is a base frame portion that can move in the tunnel and the base frame. The dry sweeper that can move in the extending direction of the tunnel and the lateral direction orthogonal to the extension direction of the tunnel along the moving rail portion attached to the upper surface portion of the portion, and attached to the lower end portion of the base frame portion. The base frame portion is configured to include a traveling moving member that moves the base frame portion along the bottom surface of the tunnel in the extending direction of the tunnel, and the base frame portion is orthogonal to the extending direction of the tunnel. It is a device provided with a jack member capable of extending in the lateral direction.

Here, the base frame portion may be provided with a height adjusting mechanism capable of adjusting the height from the traveling moving member.

According to the present invention, since the dry sweeper can be moved in the tunnel without using a transport vehicle, even a relatively small box culvert type tunnel through which the transport vehicle cannot pass can efficiently use the ceiling surface. It can be sharpened well and speedily.

It is a side view of the tunnel ceiling surface cleaning apparatus which concerns on Embodiment 1 of this invention. FIG. 1 is a cross-sectional view taken along the line AA of FIG. It is sectional drawing BB of FIG. It is a top view of the tunnel ceiling surface cleaning apparatus which concerns on Embodiment 1 of this invention. It is a figure which shows the dry type sweeper of the tunnel ceiling surface sweeping apparatus which concerns on Embodiment 1 of this invention, (a) is a side view, (b) is a rear view, (c) is a plan view. It is an enlarged detailed view of part C of FIG. It is a figure (plan view) in the arrow D direction of FIG. It is a side view of the tunnel ceiling surface cleaning apparatus which concerns on Embodiment 2 of this invention. 8 is a cross-sectional view taken along the line EE of FIG. FIG. 9 is an enlarged detailed view of part F in FIG. FIG. 10 is a view (plan view) in the direction of arrow G in FIG. It is a flowchart which shows the procedure of the cleaning work by the tunnel ceiling surface cleaning method which concerns on this invention.

Embodiments of the present invention will be described below with reference to the accompanying drawings.

[Tunnel ceiling surface cleaning device]
<Embodiment 1>
First, the configuration of the tunnel ceiling surface cleaning device according to the first embodiment of the present invention will be described below with reference to FIGS. 1 to 7.

1 is a side view of the tunnel ceiling surface cleaning device according to the first embodiment of the present invention, FIG. 2 is a sectional view taken along line AA of FIG. 1, FIG. 3 is a sectional view taken along line BB of FIG. 1, and FIG. Is a plan view of the tunnel ceiling surface sweeper, FIG. 5 is a view showing a dry sweeper of the tunnel ceiling surface sweeper, (a) is a side view, (b) is a rear view, and (c). ) Is a plan view, FIG. 6 is an enlarged detailed view of part C in FIG. 2, and FIG. 7 is a view (plan view) in the direction of arrow D in FIG.

The tunnel ceiling surface cleaning device (hereinafter, simply referred to as “cleaning device”) 1 according to the present embodiment is the ceiling of a relatively small box culvert type tunnel 50 such as a drainage ditch in which a transport vehicle cannot be carried. This is a device for cleaning the surface 50a (see FIGS. 1 to 3).

The cleaning device 1 according to the present embodiment basically has a base frame portion (frame) 2 that can move in the box culvert type tunnel 50 and a movement attached to the upper surface portion of the base frame portion 2. A dry sweeper 4 that can move in the extending direction of the tunnel 50 along the rail portion 3 (hereinafter referred to as "front-back direction") and in the lateral direction orthogonal to the extension direction (hereinafter referred to as "front-back direction"), and attached to the lower end portion of the base frame portion 2. The base frame portion 2 is configured to include a door roller member 5 which is a traveling moving member for moving the base frame portion 2 in the front-rear direction (horizontal direction in FIG. 1) along the bottom surface 50b (see FIGS. 1 to 3) of the tunnel 50. ing. As shown in FIGS. 1 to 3, hydraulic jacks 6 as jack members capable of extending in the lateral direction are provided on the left and right of the upper end of the base frame portion 2, and the hydraulic jacks 6 are provided in the tunnel 50. It constitutes a fixing means for fixing the base frame portion 2 that moves in the front-rear direction at a predetermined position (working position).

As shown in FIGS. 1 to 3, the base frame portion 2 is formed of a rectangular parallelepiped hollow frame body made of channel steel or the like. Specifically, the upper frame frame 2A (see FIG. 4) and the lower frame frame 2B forming a rectangular frame structure are connected by three columns (see FIG. 1) 2a erected vertically on both the left and right sides thereof. It is composed of.

Here, as shown in FIG. 1, the three left and right columns 2a are the front ends (left end in FIG. 1) and the rear of the upper frame 2A and the lower frame 2B at the left and right sides of the base frame 2. They are arranged at an end portion (right end portion in FIG. 1) and an intermediate portion in the front-rear direction, respectively. In the base frame portion 2, the three columns 2a erected on the left and right sides of the base frame portion 2 are connected by a total of four reinforcing materials (braces) 2b arranged diagonally to form a truss structure. The entire base frame portion 2 is reinforced by this truss structure.

In the base frame portion 2 configured as described above, the base frame portion 2 is fixed to the upper left and right sides of the front end portion and the rear end portion close to the upper frame frame body 2A to prevent the movement thereof. The hydraulic jacks 6 are arranged respectively. Here, each hydraulic jack 6 is operated by hydraulic pressure supplied from two left and right manual hydraulic pumps 7 installed horizontally at the lower part of the front end of the base frame portion 2. Specifically, if the lever 7a of the manual hydraulic pump 7 is manually operated, each manual hydraulic pump 7 operates to generate hydraulic pressure, and this hydraulic pressure is supplied to each hydraulic jack 6 via a hydraulic hose (not shown). Then, the rods of the hydraulic jacks 6 project outward and press the inner surface 50c of the side wall of the tunnel 50. Therefore, as will be described later, the base frame portion 2 that moves in the front-rear direction in the tunnel 50 is fixed by receiving the reaction force from the side wall inner surface 50c of the tunnel 50, and the movement of the base frame portion 2 is locked.

Further, the moving rail portion 3 is attached to the upper frame frame 2A of the base frame portion 2. Here, the configuration of the moving rail portion 3 will be described below with reference to FIG.

As shown in FIG. 4, the moving rail portion 3 moves the dry sweeper 4 back and forth with three left-right rail members 8 for moving the dry sweeper 4 along the lateral (horizontal) Y. It is configured to include a pair of left and right front and rear rail members 9 that are moved along the direction X. Here, the three left-right direction rail members 8 are erected in parallel in the front-rear direction at appropriate intervals between the two left and right long side portions of the upper frame frame 2A of the base frame portion 2.

On the left-right direction rail member 8, a traverse frame portion 10 formed by laying a pair of left-right front-rear direction rail members 9 is movably placed along the lateral direction Y. A dry sweeper 4 is mounted on the traversing frame portion 10 so as to travel and move in the front-rear direction X along the front-rear direction rail member 9. Here, the traversing frame portion 10 includes a plurality of traveling wheels 11 (see FIG. 2) for traveling and moving the traversing frame portion 10 in the lateral direction Y along the left-right direction rail member 8, and a traveling driving device such as a motor. 12 (see FIGS. 1 to 3) is provided. As shown in FIG. 1, the length in the front-rear direction of the traverse frame portion 10 is set to be longer than the length in the front-rear direction of the base frame portion 2, and the front end portion and the rear end portion of the traverse frame portion 10 are set to be longer. Each of the front and rear ends of the base frame portion 2 protrudes (overhangs) by a predetermined length.

Next, the configuration of the dry sweeper 4 will be described below with reference to FIG.

As shown in FIG. 5, the dry sweeper 4 mounted on the traversing frame portion 10 so as to travel in the front-rear direction X is between the traveling base portion 13 and the traveling base portion 13. An air cylinder 16 is interposed between the intermediate plate portion 15 arranged above the traveling base portion 13 with the load cell 14 interposed therebetween and the intermediate plate portion 15 and is further above the intermediate plate portion 15. It includes a sweeper mounting plate 17 and a sweeper main body 18 mounted and supported on the sweeper mounting plate 17.

Guide shafts 19 are vertically erected from the four corners of the traveling base portion 13, and a sweeper mounting plate 17 is inserted and supported vertically in these guide shafts 19 via a linear bush 20. ing. Therefore, the sweeper mounting plate 17 and the sweeper main body 18 mounted on the plate 17 are guided by the four guide shafts 19 as the air cylinder 16 expands and contracts, and moves up and down in a stable state. Can be done.

Here, the sweeper main body 18 can grind a concrete floor surface or the like to form a flat working surface, and is used by appropriately improving various known sweepers. be able to. As such a sweeper, for example, the trade name "new tornado" (manufactured by CRT Co., Ltd.) can be preferably used. The sweeper main body 18 includes a cutting disk 21, a suction dust collector 22, a drive motor 23, and the like. Around the cutting disc 21, a shatterproof member (not shown) made of a flexible spatula member, a brush-like member, or the like is arranged. The scattering prevention member is effective in scattering dust around the cutting disk 21 when the cutting disk 21 is pressed against the ceiling surface 50a of the tunnel 50 with a predetermined force for polishing. Can be prevented.

Rotating traveling wheels 24 are attached to a total of four locations on the front, rear, left, and right sides of the traveling base portion 13 of the dry sweeper 4. Further, a traveling drive device 25 such as a motor is attached to the front end portion of the traveling base portion 13.

Here, the traveling base portion 13 and the sweeper main body 18 installed so as to be able to move up and down are laid on the upper surface of the traverse frame portion 10 in parallel with each other in the front-rear direction, and a pair of left-right front-rear direction rails. It is mounted on the member 9 so as to be travelable via four traveling wheels 24, and the traveling base portion 13 and the sweeper main body 18 are mounted on the front-rear direction rail member 9 by the driving of the traveling driving device 25. It can travel along the front-back direction X. Further, by driving the traveling drive device 12 provided in the traversing frame portion 10, the traversing frame portion 10 is moved in the lateral direction Y along the left-right direction rail member 8 together with the dry sweeper 4 mounted therein. It can be moved. Therefore, the dry sweeper 4 can freely travel and move in any of the front-rear direction X and the left-right direction Y.

By the way, the air cylinder 16 is interposed between the intermediate plate portion 15 of the dry sweeper 4 and the sweeper mounting plate 17, but in the present embodiment, as shown in FIG. 5A. Air cylinders 16 are arranged at the front and rear of the sweeper mounting plate 17, respectively.

Next, a traveling moving member for moving the base frame portion 2 and the dry sweeper 4 on which the base frame portion 2 is mounted in the front-rear direction along the bottom surface 50b of the tunnel 50 will be described.

In the present embodiment, as the traveling moving member, the door roller members 5 attached to the front and rear and the left and right of the lower end portion of the base frame portion 2 are used. The door roller member 5 is configured by rotatably supporting the door roller 5a, and a pair of left and right door rollers 5a are laid parallel to each other along the front-rear direction on the bottom surface 50b of the tunnel 50. By rolling on the traveling guide rail member 26, the base frame portion 2 and the dry sweeper 4 mounted on the base frame portion 2 can move in the front-rear direction along the traveling guide rail member 26.

In the present embodiment, angle steel (angle steel) is used as the traveling guide rail member 26, and angle steel having a predetermined length (length 3 m in the present embodiment) is used as the unit rail member 26a, and a plurality of angle steel members are used. By connecting the ends of the unit rail members 26a of the above, one traveling guide rail member 26 long in the longitudinal direction (front-rear direction) is formed. Here, the laying structure of the traveling guide rail member 26 on the bottom surface 50b of the tunnel 50 will be described with reference to FIGS. 1 to 3, 6 and 7.

As shown in FIGS. 1 to 3, a plurality of track guides 27 corresponding to railroad sleepers are attached to the bottom surface 50b of the tunnel 50 along the lateral direction at appropriate intervals (3 m intervals in the present embodiment). ing. Here, for example, angle steel having an L-shaped cross section may be used for each track guide 27, and each track guide 27 is tightened with a plurality of bolts (not shown) inserted into the horizontal flange portion 27a. Is fixed to the bottom surface 50b of the tunnel 50 by

As shown in FIG. 6, notches 27A (only one is shown in FIG. 6) are provided at two locations on the left and right of the track guide 27 (two locations corresponding to the door roller member 5 provided on the base frame portion 2). Each is formed. A flange 27b is attached to the front and back of the portion where each notch 27A of the track guide 27 is formed so as to be inclined obliquely by welding or the like.

In order to connect the two unit rail members 26a made of angle steel, each unit rail member 26a should face the notch 27A of the track guide 27 from the lower side with its corner as the top 2 The ends of the unit rail members 26a of the book are butted against each other. Then, from this state, the bolts 28 that are inserted into the flanges 27b of the track guide 27 are screwed into the unit rail members 26a, so that the two adjacent unit rail members 26a are connected to each other. By performing such a connecting operation at the place where each track guide 27 is arranged, a pair of left and right traveling guide rail members 26 made of angle steel are laid parallel to each other along the front-rear direction on the bottom surface 50b of the tunnel 50. Then, the base frame portion 2 can be traveled and moved in the front-rear direction together with the dry sweeper 4 along these traveling guide rail members 26.

By the way, in the present embodiment, as shown in FIG. 1, the carriage 30 is connected to the rear of the base frame portion 2. Like the base frame portion 2, the carriage 30 can be moved along the traveling guide rail member 26 by door rollers 31 provided at four locations in front, rear, left and right below the base frame portion 2, and a dust collector 32 and a control panel are placed on the carriage 30. 33 is installed. Here, the dust discharged from the dust collector 22 provided in the dry sweeper 4 is collected by the dust collector 32 via the dust collection hose 34.

By the way, the tunnel 50 in the present embodiment is used as a drainage ditch, and is smaller in size than a road tunnel through which a vehicle passes. Specifically, the width of the opening of the tunnel 50 is 2.5 m, and the height is 3 m. On the other hand, the width of the base frame portion 2 moving in the tunnel 50 is about 2.1 m, and the length is about 2.6 m.

<Embodiment 2>
Next, the configuration of the tunnel ceiling surface cleaning device according to the second embodiment of the present invention will be described below with reference to FIGS. 8 to 11.

8 is a side view of the tunnel ceiling surface cleaning device according to the second embodiment of the present invention, FIG. 9 is a sectional view taken along line EE of FIG. 8, FIG. 10 is an enlarged detailed view of the F portion of FIG. 9, and FIG. It is a view (plan view) in the direction of arrow G in FIG. 10, and in these figures, the same elements as those shown in FIGS. 1 to 7 are designated by the same reference numerals, and the following will be repeated below. The description of is omitted.

The basic configuration of the cleaning device 1'according to the present embodiment is the same as that of the cleaning device 1 according to the first embodiment, and the journal jack 6'is attached to the jack member as the fixing means of the base frame portion 2. The points used are different from the points in which channel steel (channel steel) is used as the traveling guide rail member 26 and the chill tank 5'is used as the traveling moving member. Further, in the present embodiment, two carriages 30 and 40 that move together with the base frame portion 2 along the traveling guide rail member 26 are connected to the rear of the base frame portion 2. Here, the dust collector 32 is mounted on the one (front) carriage 30, and the wound cable 41 is mounted on the other (rear) carriage 40.

In the present embodiment, chill tanks 5'as traveling and moving members are attached to a total of four locations, front and rear and left and right, of the lower end portion of the base frame portion 2. Further, also in the present embodiment, a pair of left and right traveling guide rail members 26 are laid parallel to each other along the longitudinal direction on the bottom surface 50b of the tunnel 50, but the traveling guide rail members 26 are made of channel steel. It is composed of (channel steel), and this channel steel is laid with the opening surface facing up as shown in FIG.

Further, as shown in FIG. 10, two locations on the left and right of the track guide 27 fixed along the lateral direction to the bottom surface 50b of the tunnel 50 (two locations corresponding to the chill tank 5'provided in the base frame portion 2) , As shown in FIG. 10, each of the rectangular notches 27A (only one is shown in FIG. 10) is formed. A vertically standing flange 27c is attached to a portion of the track guide 27 where each notch 27A is formed by welding or the like.

The traveling guide rail member 26 made of channel steel is formed by connecting a plurality of unit rail members 26a to each other, but in order to connect the unit rail members 26a to each other, the track guide 27 is formed. Each unit rail member 26a faces the notch 27A with its opening surface facing upward, and the ends of the two unit rail members 26a to be connected are abutted against each other. Then, from this state, the bolts 28 that are inserted into the flanges 27c of the track guide 27 are screwed into the unit rail members 26a, so that the two adjacent unit rail members 26a are connected to each other. By performing such a connecting operation at the place where each track guide 27 is arranged, a pair of left and right traveling guide rail members 26 made of channel steel are parallel to each other along the front-rear direction on the bottom surface 50b of the tunnel 50. By laying and moving the chill tank 5'in these traveling guide rail members 26, the base frame portion 2 moves in the front-rear direction along the traveling guide rail member 26 together with the dry sweeper 4 and the two carriages 30 and 40. Run move.

[Tunnel ceiling surface cleaning method]
Next, a case where the tunnel ceiling surface cleaning method according to the present invention (hereinafter, simply referred to as “cleaning method”) is used with the cleaning device 1 (see FIGS. 1 to 7) according to the first embodiment will be described. To do. Since the cleaning method using the cleaning device 1'(see FIGS. 8 to 11) according to the second embodiment is basically the same as the method described below, the description thereof will be omitted. ..

In the cleaning method according to the present invention, the base frame portion 2 that moves a predetermined movement span SP (see FIG. 1) corresponding to the movable range in the front-rear direction X along the moving rail portion 3 of the dry sweeper 4 is moved. Along the fixing step of fixing and the moving rail portion 3 of the base frame portion 2 fixed in the fixing step, the dry sweeper 4 is moved in the front-rear direction X and the lateral direction Y to move the ceiling surface 50a of the tunnel 50. This is a method of cleaning the ceiling surface 50a of the tunnel 50 by repeating the cleaning step of cleaning for each movement span SP of the base frame portion 2. In the present embodiment, the moving span SP is set to 2,590 mm.

Here, the cleaning method according to the present invention will be specifically described with reference to the flowchart shown in FIG. In the following description, the description of the carriage 30 (see FIG. 1) connected to the cleaning device 1 will be omitted.

That is, FIG. 12 is a flowchart showing the procedure of the cleaning work by the tunnel ceiling surface cleaning method according to the present invention. As shown in the figure, when the cleaning work is started (step S1), first, The cleaning device 1 is carried into the tunnel 50 (step S2), and the cleaning device 1 is set on the traveling guide rail member 26 laid on the bottom surface 50b of the tunnel 50. Then, the wiring and the piping are connected in this state (step S3), and the cleaning device 1 is moved to a predetermined working position (step S4). In this case, since the cleaning device 1 moves in the tunnel 50 in a state where the lateral direction is accurately positioned along the pair of left and right traveling guide rail members 26, the cleaning device 1 moves in the tunnel 50 while the cleaning device 1 is moving. It can move smoothly without contacting the inner surface 50c of the side wall of the. In the present embodiment, the cleaning device 1 is moved manually, but the cleaning device 1 may be self-propelled by a drive source such as a motor.

When the cleaning device 1 moves to a predetermined working position in the tunnel 50 as described above, the lever 7a of the manual hydraulic pump 7 (see FIGS. 1 and 2) installed at the lower part of the front end of the base frame portion 2 is manually operated. Operate to drive the manual hydraulic pump 7. Then, the hydraulic pressure generated by each manual hydraulic pump 7 is sent to a total of four hydraulic jacks 6 (see FIGS. 1 to 3) via hydraulic hoses (not shown). As a result, the rods of the hydraulic jacks 6 project outward, and the pressing surface at the tip presses the inner surface 50c of the side wall of the tunnel 50. Therefore, the reaction force received from the inner surface 50c of the side wall causes the cleaning device 1 (base frame portion). 2) is fixed at a predetermined working position (fixing step: step S5).

When the cleaning device 1 is fixed at a predetermined working position as described above, the dry cleaning machine 4 installed on the base frame portion 2 of the cleaning device 1 is driven to perform the required cleaning work. Is performed (cleaning step: step S6). That is, the air cylinder 16 shown in FIG. 5 is driven, and the sweeper mounting plate 17 and the sweeper main body 18 installed on the plate 17 are guided by the four guide shafts 19 to rise, and the sweeper main body 18 is lifted. The cutting disk 21 is pressed against the ceiling surface 50a of the tunnel 50 with a predetermined force. The air cylinder 16 raises the sweeper main body 18 so that the pressing force of the cutting disc 21 detected by the load cell 14 against the ceiling surface 50a of the tunnel 50 is, for example, 0.3 to 0.9 MPa.

In the above state, the drive motor 23 is started to rotate the cutting disk 21, and the traveling drive device 12 shown in FIG. 4 is driven to drive the sweeper main body 18 in the transverse frame portion 10. The front-rear direction rail member 9 is laid. It is moved in the front-back direction X along. Then, the ceiling surface 50a of the tunnel 50 is cleaned by the rotating cutting disk 21, but since the movable range of the cutting disk 21 is the span (moving span of the cleaning device 1) SP shown in FIG. 1, the tunnel The ceiling surface 50a of 50 is swept in the front-rear direction X by the length of the span SP with a predetermined width (outer diameter of the cutting disk 21).

Next, the traveling drive device 12 shown in FIGS. 1 to 3 is driven, and the transverse frame portion 10 on which the sweeper main body 18 is mounted moves by a predetermined amount in the lateral direction Y along the left-right direction rail member 8. Be urged. Then, the traveling drive device 25 is driven from this state, and the sweeper main body 18 moves in the front-rear direction X along the front-rear direction rail member 9 of the traversing frame portion 10 in the opposite direction to the previous time, and the sweeper main body The cutting disk 21 of 18 grinds the ceiling surface 50a of the tunnel 50 with a predetermined width (outer diameter of the grinding disk 21) in the front-rear direction X by the length of the span SP. After that, by repeating the same work, the ceiling surface 50a of the tunnel 50 is cleaned over the area of the span SP, and it is determined whether or not this cleaning work is completed in the area of the span SP. (Step S7).

As a result of the above determination, if the cleaning operation has not been completed yet (step S7: No), the cleaning operation in step S6 is repeated. When the cleaning operation is completed (step S7: Yes), it is determined whether or not the ceiling surface 50a of the tunnel 50 has been cleaned over the entire range (step S8). As a result of this determination, when the ceiling surface 50a of the tunnel 50 has not been cleaned over the entire range (steps S8: No), the operations of steps S4 to S7 are repeated. That is, the cleaning device 1 is moved along the traveling guide rail member 26 by the traveling span SP shown in FIG. 1, and the same cleaning operation as described above is performed at the next work position (step S6). In this case, as shown by the chain line in FIG. 1, among the unit rail members 26a of the traveling guide rail member 26, the unit rail member 26a at the rear end portion through which the cleaning device 1 (base frame portion 2) has passed is used. A method of moving the cleaning device 1 (base frame portion 2) along the traveling guide rail member 26 by repeating the work of removing and connecting the removed unit rail member 26a to the front of the unit rail member 26a at the front end portion. May be adopted. By adopting such a method, the quantity of materials can be suppressed to the minimum necessary, and the work cost can be kept low.

On the other hand, when the ceiling surface 50a of the tunnel 50 is cleaned over the entire range (step S8: Yes), the wiring and the piping are separated (step S9), and the cleaning device 1 is moved out of the tunnel 50. Carrying out (step S10) and completing all cleaning operations (step S11).

As described above, according to the cleaning method according to the present invention, the dry type sweeper 4 can be moved in the tunnel 50 without using a transport vehicle, so that the transport vehicle passes through the box culvert type tunnel 50. Even if it is a relatively small object that cannot be formed, the effect of being able to efficiently and speedily clean the ceiling surface 50a can be obtained.

In the above embodiment, the height of the sweeper main body 18 is adjusted only by the air cylinder 16, but the base frame portion 2 of the sweeper 1 has a traveling moving member of the dry sweeper 4. A height adjusting mechanism capable of adjusting the height from (the door roller member 5 in the first embodiment and the chill tank 5'in the second embodiment) may be provided. If such a height adjusting mechanism is provided, the degree of freedom is given to the size of the tunnel in which the cleaning work can be performed by the apparatus and method of the present invention, and thus the versatility is enhanced.

In addition, the present invention is not limited to the embodiments described above, and various modifications can be made within the scope of claims and the technical ideas described in the specification and drawings. Of course.

1,1'Tunnel ceiling surface sweeper 2 Base frame part 3 Moving rail part 4 Dry type sweeper 5 Door roller member (running moving member)
5'Chill tank (running moving member)
6 Hydraulic jack (jack member)
6'Journal jack (jack member)
7 Manual hydraulic pump 8 Left / right rail member 9 Forward / backward moving member 10 Traverse frame part 11 Traveling wheel 12 Traveling drive device 13 Traveling base part 14 Road cell 15 Intermediate plate part 16 Air cylinder 17 Cleaner mounting plate 18 Cleaner body 19 Guide shaft 20 Linear push 21 Cutting disk 22 Suction dust collector 23 Drive motor 24 Travel wheel 25 Travel drive device 26 Travel guide rail member 26a Unit rail member 27 Track guide 28 Bolt 50 Tunnel 50a Tunnel ceiling surface 50b Tunnel bottom surface 50c Tunnel side wall inner surface SP movement span

Claims (8)

This is a tunnel ceiling surface cleaning method using a tunnel ceiling surface cleaning device for cleaning the ceiling surface of a box culvert type tunnel with a dry sweeper.
The tunnel ceiling surface cleaning device is
A base frame part that can move in the tunnel and
The dry sweeper that can move along the moving rail portion attached to the upper surface portion of the base frame portion in the extending direction of the tunnel and in the lateral direction orthogonal to the extending direction of the tunnel.
It is configured to include a traveling moving member attached to the lower end portion of the base frame portion and moving the base frame portion along the bottom surface of the tunnel in the extending direction of the tunnel.
A fixing step of fixing the base frame portion, which moves a predetermined moving span corresponding to a movable range in the extending direction of the tunnel along the moving rail portion of the dry sweeper, and a fixing step of fixing in the fixing step. A sweeping step of moving the dry sweeper along the moving rail portion of the base frame portion in the extending direction of the tunnel and the lateral direction orthogonal to the extending direction of the tunnel to clean the ceiling surface of the tunnel. A tunnel ceiling surface cleaning method for cleaning the ceiling surface of the tunnel by repeating the above for each movement span of the base frame portion. A traveling guide rail member is laid on the bottom surface of the tunnel along the extending direction of the tunnel, and the traveling moving member is guided along the traveling guide rail member to guide the traveling guide rail member to the base frame portion. The tunnel ceiling surface cleaning method according to claim 1, wherein the tunnel moves in the extending direction of the tunnel. The traveling guide rail member is made of channel steel laid with the opening surface facing upward, and the traveling moving member is made of a chill tank that moves along the traveling guide rail member. How to clean the tunnel ceiling surface. The tunnel ceiling surface cleaning method according to claim 2, wherein the traveling guide rail member is made of angle steel laid with a corner as a top, and the traveling moving member is made of a door roller member. The traveling guide rail member is configured by connecting a plurality of unit rail members in the extending direction of the tunnel, and the unit rail member at the rear end portion through which the base frame portion has passed is removed and the front end portion thereof is removed. The tunnel ceiling surface cleaning method according to any one of claims 2 to 4, wherein the base frame portion is moved along the traveling guide rail member by repeating the work of connecting the unit rail member in front of the unit rail member. The base frame portion is provided with a jack member that can project laterally, and the base frame portion is fixed by a reaction force received from the inner surface of the side wall when the pressing surface of the jack member is pressed against the inner surface of the side wall of the tunnel. The tunnel ceiling surface cleaning method according to any one of claims 1 to 5. A tunnel ceiling surface sweeping device for cleaning the ceiling surface of a box culvert type tunnel with a dry sweeper.
A base frame part that can move in the tunnel and
The dry sweeper that can move along the moving rail portion attached to the upper surface portion of the base frame portion in the extending direction of the tunnel and in the lateral direction orthogonal to the extending direction of the tunnel.
It is configured to include a traveling moving member attached to the lower end portion of the base frame portion and moving the base frame portion along the bottom surface of the tunnel in the extending direction of the tunnel.
A tunnel ceiling surface cleaning device provided with a jack member capable of extending in a lateral direction orthogonal to the extension direction of the tunnel in the base frame portion. The tunnel ceiling surface cleaning device according to claim 7, wherein the base frame portion includes a height adjusting mechanism capable of adjusting the height from the traveling moving member.

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