JP2002276166A - Grinding attachment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a grinding attachment for improving efficiency of work such as grinding or the like. SOLUTION: The grinding attachment 10 for grinding the lower surface of a structure includes a vehicle 20, a working section 30 provided to the vehicle 20 in a movable manner at least in the vertical direction, a water jetting device 50 provided to the working section 30 in a movable manner in a direction having a horizontal component and a cover member (a moving area cover member) for covering a moving area to the working section 30 of the water jetting device 50.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grinding device.

[0002]

BACKGROUND OF THE INVENTION For example, when repairing a concrete ceiling surface of a tunnel (providing a reinforcing layer), it is necessary to grind the surface of the ceiling surface by several millimeters before the repair. That work is also called cleaning. Also,
In order to reinforce the surface of a structure such as a concrete pier, when the surface is further covered with concrete, it is necessary to cut the surface of the structure by several centimeters before the reinforcing work. The work is said to be hanging. In this specification, both are collectively referred to as “grinding”.

[0003]

2. Description of the Related Art Conventionally, for example, when cleaning the ceiling surface of a tunnel while a vehicle is running, the following is performed. That is, as shown in FIG.
Sheet 20 so as to partition a predetermined portion of the ceiling surface C
0, and the worker W
The cleaning work is performed manually. That is, the worker W holds the cleaning device from which high-pressure water is ejected from the tip portion, and the cleaning operation is performed by the cleaning device. The partition sheet 200 is for preventing the water spouted from the blasting device from scattering outside (to the side where the vehicle passes).

[0004]

When the tunnel T is being cleaned while the vehicle is passing, the time for the cleaning operation is limited, so that it is required to improve the efficiency of the cleaning. I have. However, the manual cleaning operation as described above is inefficient in itself, and the operation of attaching and detaching the partition sheet 200 is difficult, and in that respect, the cleaning efficiency is not good.

Accordingly, an object of the present invention is to provide an apparatus that can improve the efficiency of surface treatment such as polishing.

[0006]

According to a first aspect of the present invention, there is provided a grinding apparatus for grinding a lower surface of a building, comprising: a vehicle; A work unit movably provided, a nozzle member provided movably in a direction having a horizontal component with respect to the work unit, and spraying water; and And a moving range cover member that covers a moving range for the part.

[0007] The "lower surface" refers to a surface facing in a direction having a lower component. Not only a horizontal lower surface but also an inclined lower surface is included.

[0008] In the grinding device of the present invention, depending on the vehicle,
It is possible to move to a construction point where grinding is performed. Then, in a state where the grinding device (vehicle) is located at the construction point, the working unit is raised toward the lower surface of the structure, and the moving range of the nozzle member with respect to the working unit is covered by the moving range cover member. In this state, the lower surface of the structure is ground by spraying water on the lower surface of the structure while the nozzle member moves in a direction having a horizontal component with respect to the working unit. At this time, the movement range cover member restricts (prevents) the water (water reflected by the lower surface of the structure) jetted from the nozzle member and the grinding swarf from which the lower surface of the structure has been ground to the outside by the moving range cover member. Is done. As described above, this grinding device can be easily moved to the construction point, and the scattering of water and the like to the outside is easily restricted (prevented). For this reason, this grinding device can perform the grinding operation very efficiently.

A second aspect of the present invention is the grinding apparatus according to the first aspect of the present invention, further comprising a water receiving member provided below the moving range cover member, and discharging water from the water receiving member. This is a grinding device having a drainage mechanism for performing the grinding.

According to the grinding apparatus of the present invention, the following operation and effect can be obtained in addition to the operation and effect of the grinding apparatus of the first aspect. That is, water (including grinding swarf on which the lower surface of the structure is ground) sprayed from the nozzle member and reflected by the lower surface of the structure is received by the water receiving member, and the water is discharged by the discharging mechanism. For this reason, in the grinding device of the present invention, the water used for the grinding is restricted (prevented) from flowing out, and the point where the grinding is performed is restricted (prevented) from being flooded.

A third aspect of the present invention is the grinding apparatus according to the first or second aspect of the present invention, further comprising a nearby cover member that covers the vicinity of the nozzle member.

In the grinding apparatus of the present invention, since the vicinity of the nozzle member is covered by the nearby cover member, the water sprayed from the nozzle member is more effectively prevented from being scattered to the outside in combination with the moving range cover member. You.

According to a fourth aspect of the present invention, there is provided the grinding apparatus according to any one of the first to third aspects, wherein a tip of the moving range cover member is formed of an elastically deformable material. A grinding device having a loop-shaped cross-section and provided with an abutting portion that abuts on a lower surface of the building.

In the grinding device according to the present invention, the contact portion provided at the distal end portion of the moving range cover member is formed of an elastically deformable material and has a loop-shaped cross section. For this reason, the contact portion is elastically deformed so that the loop-shaped cross section is compressed, and contacts the lower surface of the building.
Therefore, even when the lower surface of the building has irregularities, scattering of water is effectively restricted (prevented).

[0015]

Next, an embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, a water supply vehicle 100, a high-pressure pump vehicle 110, and a wastewater recovery vehicle 120 are associated with the cleaning device 10 (grinding device).

As shown in FIG. 2, the cleaning apparatus 10 has a vehicle 20. The vehicle 20 is provided with a boom 22 (a base end thereof), and a working unit 30 is provided at a distal end of the boom 22.

The base end of the boom 22 is rotatable around a vertical axis at a base end thereof, and the inclination angle between the boom 22 and the vertical axis is variable. The boom 22 is extendable. The cleaning unit is rotatable with respect to the tip of the boom 22, and the angle of inclination with the boom 22 is also variable.

As shown in FIGS. 3 to 6, the working unit 30
It has the following configuration. The working unit 30 has a rectangular bottom 32, and a column 36 is provided upright at each corner of the bottom 32. A water receiving member 33 is provided on the bottom 32. The water receiving member 33 has a bottom plate portion 34, and a flange portion 35 is formed on a peripheral portion of the bottom plate portion 34.

As shown in FIG. 3 and FIG.
Are connected by a plurality of connecting members (symbols are omitted). The pillar portion 36 is formed such that a small-diameter pipe 37b is inserted into a large-diameter pipe 37a and both are relatively fixed by a screw member 38, and is extendable and contractible.

The vicinity of the upper end of each pillar 36 is connected by a long side connecting member 40a and a short side connecting member 40b. A long hole 48 is formed near each end of the short side connecting member 40b, and the short side connecting member 40b is joined by a screw member 49 screwed to the column 36 through the long hole 48. . Thereby, the short side connecting member 40b is connected to the bottom 3
2 and a state oblique to the bottom 32 (FIG. 7).

As shown in FIGS. 3 and 4, a pair of movable rail members 42 are provided over both short side connecting members 40b. The two movable rail members 42 are arranged in parallel, and both ends thereof are connected by a connecting member 43. Each coupling member 43 is provided with a pair of roller support portions 44, and each roller support portion 44 is provided with a roller 45 rotatably. Each roller 45 is capable of rolling with respect to the outer surface of the short side connecting member 40b. Then, by the movement operation by the operator, each roller 45 rolls with respect to the short side connecting member 40b, and the pair of movable rail members 42 can move.

As shown in FIG. 4, a pair of movable rail members 4
For 2, the water jetting device 50 is movably provided as follows. Two pairs of rollers 51 are provided on opposite outer surfaces of the water ejection device 50, respectively. The two pairs of rollers 51 are rotatably provided so as to sandwich each movable rail member 42. For this reason, the water ejection device 50 can be moved along the length direction of the pair of movable rail members 42 by being moved by an operator.

As shown in FIG. 1 and FIG.
A water supply hose 102 (the base end thereof) is connected to the water tank 101 of No. 0, and the water supply hose 102 is connected to the water jetting device 50 (the water pipe 52 thereof) via the high pressure pump 111 of the high pressure pump vehicle 110. ing.

As shown in FIG. 5, a water pipe 52 is provided inside the water jetting device 50 so as to be rotatable around its own axis. A nozzle member 53 is provided at the tip of the water pipe 52. The nozzle member 53 has a substantially disk shape, and a water passage 54 is formed inside the nozzle member 53. One inflow portion 55 a of the water channel 54 is provided at the center of the base end of the nozzle member 53, the water channel 54 branches inside the nozzle member 53, and the outflow portion 55 b of the water channel 54 is a tip of the nozzle member 53. A plurality of parts are provided in the part (other than the center part).

A motor 56 is disposed inside the water jetting device 50, and a sprocket 57 a provided on a rotating shaft of the motor 56 and a sprocket 57 provided on the water pipe 52.
A chain 58 is bridged between the chain 58 and b. And
The water pipe 52 and the nozzle member 53 rotate based on the driving of the motor 56.

The water jetting device 50 is provided with a cover member 59 (a nearby cover member). The cover member 59 is formed in a flat bottomed cylindrical shape with an open front end side, and covers the vicinity of the nozzle member 53 (behind and peripheral portions).

As shown in FIGS. 3 and 6, the working unit 30 is provided with a cover member 70 (movable range cover member). Most of the cover member 70 is formed by a sheet. The cover member 70 has four side surfaces 71 corresponding to the working unit 30. At least a lower portion of the cover member 70 is disposed inside the working unit 30. The lower part of each side part 71 is not continuous with the adjacent side part 71 (the lower part thereof), and both parts are cut off. A contact portion 72 is provided at the tip of each side surface portion 71 of the cover member 70. The contact portion 72 is formed of rubber and has a loop-shaped cross section.

As shown in FIGS. 2 and 3, the water receiving member 3
3 is a drain hose 122 (drain mechanism) (the base end)
Is connected. Drain hose 122 (the tip)
Is connected to the drainage storage tank 121 of the drainage recovery vehicle 120.

Next, a description will be given of a method of using the cleaning apparatus 10 and the effects thereof. This cleaning device 10 is used for the vehicle 2
By 0, it moves to a predetermined construction point. For example, FIG.
As shown in (2), when the ceiling surface C of the tunnel T is to be cleaned, it moves below the portion of the ceiling surface C to be cleaned. Water supply vehicle 100, high pressure pump vehicle 110, drainage recovery vehicle 1
20 also moves with it.

When the boom 22 is operated, the working section 30 is raised, and the contact section 72 of the cover member 70 is
It comes into contact with the ceiling surface C of the tunnel T.
At this time, the movable range of the water ejection device 50 (nozzle member 53) is covered in a substantially sealed state by the loop-shaped contact portion 72 being elastically compressed.

Then, as shown in FIG. 4, the pair of movable rail members 42 are positioned at predetermined positions by the operation of the worker in the working unit 30. In this state, the water ejection device 50 is moved along the pair of movable rail members 42 by the operation of the worker. With the movement, the water ejection device 50
The high-pressure water is jetted from the nozzle member 53 of. That is,
The nozzle member 53 rotates about its own central axis by driving the motor 56, and water supplied from the water supply vehicle 100 and made high pressure by the high-pressure pump vehicle 110 is jetted from the nozzle member 53.

In this way, high-pressure water is sprayed almost evenly on the ceiling along the locus of movement of the nozzle member 53, and the surface of the ceiling is cleaned. Thus, a part of the surface of the ceiling is polished in a belt shape (the polished part is referred to as a part to be polished).

Next, the movable rail member 42 is moved by a distance corresponding to the width of the above-mentioned strip-like portion to be polished. And
As described above, the high-pressure water is jetted from the nozzle member 53 while the water jetting device 50 (the nozzle member 53) is moved.
By repeating the above operation, the movable range of the polishing apparatus 10 (nozzle member 53) on the ceiling surface C is cleaned.

Next, the movement of the vehicle 20 and / or the boom 2
By the operation 2, the working unit 30 is moved to a position where the next cleaning is performed. Then, by performing the same operation as described above, the movable range of the cleaning device 10 (nozzle member 53) when the working unit 30 is located at that point is cleaned.

By repeating the above operations,
All desired portions of the tunnel T ceiling are cleaned.

As described above, the cleaning apparatus 10 can be easily moved to the construction site by the vehicle 20 and has the following effects. In other words, the water (including the polished scum of the workpiece) spouted from the nozzle member 53 and reflected from the workpiece is prevented from being scattered to the outside by the cover member 59 (prevented), and the cover member 70 is prevented from scattering. Is also restricted (prevented) from flying outside. At this time, in the cover member 70, the contact part 72 formed of rubber and having a loop-shaped cross section is elastically compressed with respect to the lower surface of the building, so that the movement range of the nozzle member 53 is made closer to a closed state. The scattering of water to the outside is more effectively restricted (prevented).

As described above, the water is prevented from being scattered by the cover member 70.
Can be easily performed by raising the working unit 30 toward the lower surface of the building in a state where is located at the construction point.

As described above, the cleaning apparatus 10 can be easily moved and can easily prevent water from scattering to the outside, so that the cleaning operation can be performed more efficiently.

[Brief description of the drawings]

FIG. 1 is a view showing the entirety of a polishing apparatus according to an embodiment of the present invention and an apparatus associated therewith.

FIG. 2 is a perspective view showing a polishing apparatus according to an embodiment of the present invention.

FIG. 3 is an exploded perspective view showing a working unit of the polishing apparatus according to the embodiment of the present invention.

FIG. 4 is a perspective view (a perspective view seen from below) showing a main part of a working unit in the polishing apparatus of one embodiment of the present invention.

FIG. 5 is a cross-sectional view showing a water jetting device in the polishing apparatus of one embodiment of the present invention.

FIG. 6 is an enlarged perspective view showing a part of a working unit in the polishing apparatus according to the embodiment of the present invention.

FIG. 7 is a diagram illustrating a use state of the polishing apparatus according to the embodiment of the present invention.

FIG. 8 is a diagram showing a conventional cleaning method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Polishing apparatus (grinding apparatus) 20 Vehicle 30 Working part 33 Water receiving member 53 Nozzle member 59 Cover member (near cover member) 70 Cover member (moving range cover member) 72 Contact part 122 Drain hose (Drain mechanism)

Claims (4)

[Claims] 1. A grinding device for grinding a lower surface of a structure, comprising: a vehicle; a working unit provided at least vertically movable with respect to the vehicle; and a horizontal component with respect to the working unit. A grinding device comprising: a nozzle member movably provided in a direction to spray water; and a moving range cover member provided in the working unit and covering a moving range of the nozzle member with respect to the working unit. 2. The grinding apparatus according to claim 1, further comprising: a water receiving member provided below the moving range cover member; and a drainage mechanism for discharging water from the water receiving member. apparatus. 3. The grinding device according to claim 1, further comprising a near cover member that covers a vicinity of the nozzle member. 4. The grinding device according to claim 1, wherein the tip of the moving range cover member has a loop-shaped cross section formed of an elastically deformable material. A grinding device provided with an abutting portion that abuts on a lower surface of the structure.