JPH0257182B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to an apparatus for roughening concrete walls and floors, such as the inner surface of tunnels, by chipping.

``Prior Art'' Conventionally, the present applicant has previously provided, for example, a device for roughening concrete surfaces for pouring joints, etc.
No. 253659)), there is a roughening device R shown in FIGS. 8 and 9. This roughening device R is used by being attached to the tip of the swinging arm a of the hydraulic excavator Z, and presses the main body frame b against the concrete wall d using teeth c while maintaining a predetermined interval. A chisel hammer e that is movably attached to b is moved back and forth by an air cylinder operated by pneumatic pressure, and a chisel f at the tip of the chisel f is used to roughen the surface of the concrete wall d. It is.

According to this roughening device R, uniform roughening can be carried out continuously and efficiently while the chisel hammer e moves within the main body frame b along the concrete wall d.

"Problems to be Solved by the Invention" However, since the roughening device R as described above is used by being attached to the tip of the swing arm a of the hydraulic excavator Z, the roughening work is performed. Sufficient work space was required around the concrete wall d, including the installation space for the hydraulic excavator Z.

For this reason, for example, when roughening the inner wall surface of a tunnel, especially a tunnel with a small cross section, there has been a problem that the above-mentioned roughening device R cannot be used due to installation space constraints.

Conventionally, therefore, the work of chipping the inner walls of tunnels had to rely on the manual labor of workers, which was inefficient and difficult to roughen uniformly.

This invention has been made in view of the above circumstances, and is a roughening device that does not require much installation space, can be installed, for example, inside a tunnel with a small cross section, and can perform efficient and uniform roughening. The purpose is to provide

``Means for Solving the Problems'' This invention provides a cart movable at least in the front-back direction along a wall surface, a vertical frame provided on the cart, and an axis extending in the front-back direction on the vertical frame. As well as being rotatably mounted as a center,
A rotating frame configured to be movable in at least one of an up-down direction or a direction toward and away from a wall surface, a chisel movably attached to the rotating frame, and a first drive mechanism that rotates the rotating frame. and a second drive mechanism that moves the rotary frame in at least one of the vertical direction or the direction toward and away from the wall surface, and a third drive mechanism that moves the hoist along the rotary frame. It is what it is.

"Operation" The roughening device of the present invention moves at least along a wall surface and is placed at a work place, the rotating frame rotates and moves to face the chipping machine against the wall surface, and the chipping machine moves along the wall surface. While doing so, roughen the wall surface.

"Embodiment" An embodiment of the present invention will be described below with reference to FIGS. 1 to 6.

First, with reference to FIGS. 1 and 2, the schematic structure of the roughening device of this embodiment will be described. In these figures, reference numeral 1 indicates a truck. Trolley 1
is shown in FIG. 1 by its wheels 2... P,
It is movable in the Q direction.

A pair of vertical frames 3, 3 are erected on the upper surface of both ends of the truck 1 in the P and Q directions, facing each other. The vertical frames 3, 3 each include a base 3a placed on the trolley 1, a pair of vertical members 3b, 3b whose lower ends are fixed to the base 3a, and a horizontal frame mounted on the upper ends of the vertical members 3b, 3b. It is constituted by a fixed horizontal member 3c. At the base 3a of this vertical frame 3, in FIG.
A screw hole is provided that penetrates in the illustrated RS direction (a direction perpendicular to the PQ direction in the horizontal plane), and threaded rods 4, 4 are screwed into this screw hole. Threaded rod 4,4
is connected at one end to a rotating shaft of a hydraulic motor 5 fixed to the truck 1, and at the other end is rotatably supported by a support member 6. This threaded rod 4 and hydraulic motor 5 are connected to a rotating frame 1 which will be described later.
0 constitutes the second drive mechanism 7, which allows the vertical frames 3, 3 to rotate when the threaded rods 4, 4 are rotated by the rotational driving force of the hydraulic motors 5, 5.
The base 3a can move in the illustrated RS direction by sliding the upper surface of the truck 1.

In addition, the vertical members 3b of the vertical frames 3, 3,
3b, the lower end is the base 3a.
A hydraulic cylinder 8 fixed to is erected.
At the tip (upper end) of the piston rod 8a of this hydraulic cylinder 8, there is a shaft 1 of a rotating frame 10, which will be described later.
Bearing members 9, 9 supporting 1 are fixed, and these bearing members 9, 9 can move up and down along the vertical frames 3, 3 by the action of a hydraulic cylinder 8. This hydraulic cylinder 8 is a second drive mechanism (vertical movement mechanism) of the rotating frame 10, which will be described later.
This is the result.

A rotating frame 10 is disposed between the vertical frames 3, 3. rotating frame 10
As shown in FIGS. 1 and 2, a pair of square side frames 10a, 10a are connected by connecting members 10b so as to face each other using channel-like members made of steel or the like. In addition, brace members 10c, 10c are attached to the side frames 10a, 10a, and reinforcing plates 10d, 10d are fixed at positions where the brace members 10c, 10c intersect. Further, in this reinforcing plate 10d, shafts 11, 11 are attached to the rotating frame 10 at the position where the above-mentioned brace members 10c, 10c intersect with each other, that is, at the position of the axis of the rotating frame 10 in the PQ direction.
0 protrudes outward and is fixed, and this shaft 11, 11
is rotatably supported by a bearing member 9 fixed to the piston rod 8a of the hydraulic cylinder 8.

Furthermore, a sprocket 12 is attached to one side of the shaft 11, and this sprocket 12
is connected by a chain 14 to a rotating shaft of a hydraulic motor 13 fixed to the bearing member 9. This sprocket 12, hydraulic motor 1
3. The chain 14 constitutes the first drive mechanism 15 of the rotating frame 10, and as a result, the rotating frame 10 is driven by the hydraulic cylinder 8 as described above.
It is possible to move in the vertical direction (TU direction in FIGS. 1 and 2) by the action of , and also rotate in the VW direction shown in FIG. 2 about the shaft 11 as the hydraulic motor 13 rotates. .

Further, a movable frame 16 is provided between the pair of connecting members 10b, 10b of the rotating frame 10.
is freely spanned. Near the center of the long sides 16a, 16a of this moving frame 16,
Side frames 10a, 10a of rotating frame 10
A screw hole is provided for threading the threaded rod 17 that extends between them, and a hole through which two guide rods 18, 18 that extend parallel to the threaded rod 17 are inserted. It is provided. This threaded rod 17
is connected to the rotating shaft of the hydraulic motor 19, and as the threaded rod 17 rotates with the rotation of the hydraulic motor 19, the moving frame is connected to the connecting member 10.
b, 10b in the PQ direction shown in the figure.

Furthermore, the long side 16 of this moving frame 16
A, 16a, a mounting base 21 to which a chisel hammer 20 is attached is swingably mounted, and the long side portion 16a of the movable frame 16 is attached to this mounting base 21.
A threaded hole is provided which extends parallel to the threaded rod 23 and is threaded into the threaded rod 23 which is rotated by the hydraulic motor 22. As a result, the mounting base 21 moves in the vertical direction (TU direction shown) as the hydraulic motor 22 rotates.
It can be moved freely. Above chisel hammer 2
0 consists of a cylindrical frame 20a and a plurality of chisels 20b built into the frame 20a and reciprocated by an air cylinder (not shown) operated by compressed air. .

Accordingly, as the hydraulic motor 19 and the hydraulic motor 22 rotate, the lifting hammer 20 moves in the PQ direction and the TU direction along the surface formed by the connecting members 10b, 10b of the rotating frame 10 and one side of the side frames 10a, 10a. It can be moved freely. That is, the hydraulic motors 19 and 22 and the threaded rods 17 and 23 constitute a third drive mechanism 24.

Based on the above configuration, this roughening device is configured so that after the trolley 1 moves in the PQ direction shown in the figure and is placed at a predetermined position, the rotating frame 10 moves in the RS direction shown in the figure and in the TU direction.
The chisel hammer 20 can be opposed to the surface of the workpiece by moving in the direction and rotating in the VW direction shown in the figure. And the chisel hammer 20 is
While moving along the surface on which the chisel hammer 20 of the rotary frame 10 is attached, the surface of the workpiece can be continuously roughened and roughened uniformly.

Next, a method of using this roughening device to roughen the inner surface of a concrete wall of a tunnel will be explained with reference to FIGS. 3 to 6.

First, FIG. 3 shows a state in which this roughening device is placed in a tunnel A and is roughening the vertical portion _A1 of the inner wall thereof. That is, after arranging the roughening device approximately at the center of the bottom surface of the tunnel A along the axial direction, the vertical frame 3 is moved in the direction R shown in the figure, and the lifting hammer 20 is applied to the vertical portion A ₁ to set a predetermined spacing dimension. Keep and face. Then, while operating the chisel hammer 20, the chisel hammer 20
vertically along the rotary frame 10 and in the direction along the axis of the tunnel A.
The entire part of _A1 facing the rotating frame 10 is roughened.

Next, when roughening the curved part _A2 at the upper part of the inner surface of the tunnel A, as shown in FIGS. By rotating the chisel hammer 10 in the direction W shown in the figure, the axis of the chisel hammer 20 faces the inner wall surface of the tunnel A in a substantially perpendicular manner, and roughening is performed in the same manner as described above. Here, the hanging hammer 20 is connected to the rotating frame 10.
As it moves along the tunnel, the position of the rotating frame 10 is adjusted so that the chisel hammer 20 always maintains a constant distance from the tunnel inner wall surface and its axis is always perpendicular to the inner wall surface.

Further, when roughening the bottom surface _A3 of the tunnel A, as shown in FIG. 6, the rotary frame 10 may be rotated so that the chisel hammer 20 faces the bottom surface _A3 .

As described above, while moving and rotating the rotating frame 10, the vertical part A ₁ of the inner wall surface of the tunnel A,
After continuously roughening the curved part A ₂ , the other vertical part A ₄ , and the bottom surface A ₃ , the roughening device is moved along the axis of the tunnel A (that is, in the direction perpendicular to the plane of the paper), and the above-mentioned By repeating the same procedure, the entire inner surface of tunnel A will be continuously roughened.

The embodiments of this invention have been described above, but
The present invention is not limited to the above-mentioned embodiments, and the shapes and dimensions of the cart, vertical frame, rotating frame, etc. can be varied in various applications depending on the shape and dimensions of the workpiece for which this roughening device is used. is possible. For example, in the above embodiment, the rotary frame is configured to be movable up and down and movable in directions toward and away from the wall surface, but depending on the cross-sectional shape of the tunnel, etc., it may be sufficient as long as it is movable in at least one direction. Further, the trolley may run on rails laid in advance, or may be equipped with a power source for self-propulsion. Furthermore, the movement and rotation of the rotating frame, the movement of the chisel hammer, and its stroke can be automatically controlled according to a preset program or by various sensors. Note that the chisling hammer may be configured to be equipped with a nozzle that spouts high-pressure water or compressed air to clean chipping debris.

Further, in the above embodiment, a chisel hammer is used as the chisel, but instead of the chisel hammer, a water jet nozzle that performs chiseling using an ultra-high pressure jet water stream may be used. 7th
The figure shows an example in which this water jet nozzle 30 is used. In this example, the water jet nozzle 30 is attached to a rotating plate that is rotatably attached to a horizontal table 31 in a horizontal plane. 32 and its horizontal stand 31
A hydraulic cylinder 34 is attached to a guide rail 33 fixed to a mounting base 21 (see FIGS. 1 and 2).
It is attached so that it can be moved back and forth. Further, the water jet nozzle 30 is configured so that the direction of the nozzle tip can be changed upward or downward by a hydraulic cylinder 35. According to this, the water jet nozzle 30 can efficiently and uniformly spray the wall surface by discharging an ultra-high pressure jet water stream in an arbitrary direction depending on the inclination angle of the wall surface.

Note that a plurality of chisels such as chisel hammers and water jet nozzles may be provided on the rotating frame.

"Effects of the Invention" As explained in detail above, according to the present invention, the cart is provided with a vertical frame, and the vertical frame is rotatable and movable up and down or in at least one direction of contacting and separating from the wall surface. Set up a frame,
Since the lifting machine is movably provided on the rotating frame, there is no need for any other moving means such as a hydraulic shovel, and there is an advantage that the installation space is not so large. Further, according to the present invention, it is possible to automate the chisel work, improve work efficiency, and have effects such as uniform roughening.

[Brief explanation of drawings]

1 to 6 are diagrams showing embodiments of the present invention. FIGS. 1 and 2 are diagrams showing the overall schematic structure of the roughening device of this embodiment.
The figure is a front view, and FIG. 2 is a side view. Figures 3 to 6 are diagrams illustrating a method for roughening the inner wall surface of a tunnel using this roughening device.
The figure shows a state where the vertical part of the wall surface is roughened, Figure 4 shows a state where the curved part is roughened, Figure 5 shows a state where the top part is roughened, and Figure 6 shows a state where the bottom surface is roughened. FIG. FIG. 7 is an enlarged side view of the main parts of the embodiment in which a water jet nozzle is used. 8 and 9 are views showing a conventional roughening device, in which FIG. 8 is a side view showing the roughening device attached to a hydraulic excavator and performing roughening, and FIG. The figure is a side view showing a schematic configuration of this roughening device. DESCRIPTION OF SYMBOLS 1... Truck, 3... Vertical frame, 7... Second drive mechanism, 8... Hydraulic cylinder (second drive mechanism), 10... Rotating frame, 11... Axis, 15
... first drive mechanism, 20 ... chisel hammer (chip machine), 24 ... third drive mechanism, 30 ... water jet nozzle (chip machine).

Claims (1)

[Scope of Claims] 1. A device for roughening concrete walls such as the inner surface of tunnels, which comprises a cart movable at least in the front and rear directions along the wall surface, and a vertical frame provided on the cart. , a rotary frame that is attached to the vertical frame so as to be rotatable about an axis along the front-rear direction, and is configured to be movable in at least one of the vertical direction or the direction toward and away from the wall; a movably attached chisel; a first drive mechanism that rotates the rotary frame; a second drive mechanism that moves the rotary frame in at least one of an up-down direction or a direction toward and away from a wall surface; A roughening device for a wall surface such as concrete, comprising a third drive mechanism that moves a chisel along a rotating frame. 2. The device for roughening a wall surface such as concrete according to claim 1, wherein the chisel is a chisel hammer. 3. The roughening device for walls such as concrete according to claim 1, wherein the chisel is a water jet nozzle.