JPS6038508B2 - Hydraulic concrete demolition machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is a hydraulic concrete demolition machine that is applied to destroy indoor partition concrete walls, etc. with low noise and low vibration during expansion and renovation work of reinforced concrete and steel-framed reinforced concrete buildings. It is related to.

Currently, as the above-mentioned concrete demolition machine (destroying machine), the one illustrated in FIG. 1 is known.

This is achieved by providing a reaction force receiving part c or a fixed chisel on one of the opposing short sides b and b' of a box-shaped frame a whose side surface is approximately U-shaped. A movable chisel d is provided on the other side so as to be movable. According to this demolition machine, when demolishing a concrete wall e, the suspension support method using a rope f etc. is the best method as shown in the figure, and the moving stage in the perpendicular direction is Although it is movable on the rail g, it is common to pull it in the Y direction perpendicular to it by input.

Therefore, it is difficult to determine the direction and position of the demolition machine, and the support is unstable, resulting in low work efficiency and problems such as the disassembly machine swinging greatly due to the reaction force of the chisel during demolition work, which is dangerous. was.

Therefore, as a result of studies in view of the above-mentioned problems, the present invention provides a new hydraulic concrete demolition machine, which is equipped with a fixed chisel on the short side of an L-shaped frame and a movable chisel on the long side. It consists of a demolition machine main body, a sunset table that supports the demolition machine main body and rotates around a vertical axis, and a guide mechanism that slides in two mutually perpendicular directions in a horizontal plane. The gist is that both guide mechanisms are equipped with an overload prevention mechanism that moves in a driven manner when the chisel reaction force exceeds the set load. The chisel can be easily adjusted to any position and direction at the floor height of The purpose of this invention is to prevent such problems and enable demolition work to be carried out with high efficiency and safety.

The present invention will be described in detail below based on drawings showing specific examples of implementation.As shown in FIG. A dismantling machine main body 5 formed with a fixed chisel 2 and a movable chisel 3 on the long side lb so as to be centrifugally movable with respect to the fixed chisel 2 by a drive unit 4, and supporting the dismantling machine main body 5. a turntable 7 that rotates around a vertical shaft 6; a respective guide mechanism 8 that supports the turntable 7 and the demolition machine main body 5 and is slidable in two directions perpendicular to each other in a horizontal plane; 9, and an overload prevention mechanism 10 that moves passively in both of the guide mechanisms when the reaction force of the chisels 2 and 3 during disassembly work exceeds a set load.

In this case, a hydraulic cylinder is used as the drive unit 4, and the drive unit 4 moves the movable chisel 3 to a movable body that engages the furthest side lb of the frame 1 with a flange (not shown). It has been arranged.

The turntable 7 is also rotatably driven by hydraulic pressure, and the guide mechanisms 8 and 9 are formed by slidably engaging fixed parts 8a and 9a and movable members 8b and 9b, respectively. At the same time, the fixed members 8a, 9a and the movable members 8b, 9b are relatively slidably connected by hydraulic cylinders 8c, 9c, etc., so that they can slide independently in two directions perpendicular to each other. .

Further, the overload prevention mechanism 10 controls the movement of the drive unit 4 by the hydraulic cylinder 8c when the reaction force of both chisels 2 and 3 during concrete wall demolition becomes larger than a preset load.
, 9c are provided so as to follow and move.

That is, a hydraulic pressure relief valve 15 is provided in the hydraulic circuit 11 of the hydraulic cylinders 8c, 9c, and the valve is preset to the above-mentioned set load, and the friction force between each member of the guide mechanisms 8, 9 is appropriately generated. By doing so, it is also possible to provide an overload prevention function. Therefore, in the above configuration, when using this to dismantle the concrete wall 12, the steps shown in FIGS.
As shown in the figure, a demolition machine A is supported horizontally on a suitable guiding machine B, such as a forklift.

In this case, since the frame 1 of the demolition machine main body 5 is L-shaped, the short pieces la of the frame 1 protrude forward, and the drive unit 4 and the turntable are mounted in order on the farthest side lb of the frame 1. - Of the bull 7, the X-axis guide mechanism 8, and the Y-axis guide mechanism 9, the lowest Y-axis guide mechanism 9 is supported horizontally on the lift 13 of the instructor B. In this way, since the demolition machine A is supported on one side of the wall 12, the wall 1 is
The short side of the frame 2 is inserted into a pilot hole (not shown) that is closed at 2, and the movable chisel 3 is driven forward by the drive unit, thereby destroying the wall 12 between the chisels 2 and 3.

At this time, when the reaction force of the chisels 2 and 3 exceeds a preset load, the hydraulic cylinder 8c or 9c is activated, so that the guide mechanism 8 or 9 moves the sea bream in the x direction or the Y axis direction. Since it slides, excessive loads will not act on the demolition machine support, ie, the lift of the guide machine B, etc. In other words, when the demolition machine main body 5 is turned by the turntable 7 as shown by the solid line and broken line in FIG.
The direction of the chisel reaction force changes depending on the orientation of the demolition machine main body 5, so depending on the orientation, either one of the guide mechanisms 8
Or 9 or both guide mechanisms 8 and 9 slide.

Further, as shown in FIG. 3, the demolition machine main body 1 can be turned by the turntable 7 by 90 degrees in both left and right directions from the neutral position in the X-axis direction. With the demolition machine A positioned at the corner of the building, it is possible to demolish both walls 12, 12' located at right angles to each other. Further, the operation of the demolition machine A is preferably performed remotely from the operator seat 14 on the instructor machine B.

As explained above, according to the hydraulic concrete demolition machine according to the present invention, the demolition machine main body 5 is constructed by renovating the fixed chisel 2 and the movable chisel 3 on the short side la and long side lb of the L-shaped frame, respectively. By means of the turntable 7 supported around the eccentric vertical axis, the chisel 2 can be supported outside the cross-sectional center of the wall 12, that is, on one side of the wall 12, and can be moved at any position and direction at a predetermined height above the floor surface. , 3 can be easily and accurately adjusted, and if a large chisel reaction force occurs during demolition work, the guide mechanism 8, 9 in the two rut directions can be used.
Since the hydraulic simulated parts of each mechanism are activated and no large load is generated on the demolition machine support equipment, etc., the demolition work can be carried out completely, and the hydraulic drive parts of each part can be controlled remotely. It has good workability and has the advantage of being able to carry out demolition work efficiently and safely.

[Brief explanation of the drawing]

Fig. 1 is a side view showing how a conventional concrete demolition machine is used, Fig. 2 is a side view showing a hydraulic concrete demolition machine according to the present invention, and Figs. 3 and 4 are side views of the same demolition machine. FIG. 2 is a plan view and a side view showing usage patterns, respectively. 1...L-shaped frame, la...short side of the frame, lb...most side of the frame, 2...
Fixed chisel, 3...Movable chisel, 5...
・Electrolyzer body, 6... Vertical moth, 7...
Turntable, 8...×axial guide mechanism,
9...Guiding mechanism in the Y-axis direction, 10...
Overload prevention mechanism. /Gano Sardine/Power 2 Sardine/Gata Sardine'Game Sardine

Claims (1)

[Claims] 1. A demolition machine body having an L-shaped frame and having a fixed chisel on its short side and a movable chisel on its long side, and a turntable that supports the demolition machine body and rotates around a vertical axis. , and two guide mechanisms that slide in two axes perpendicular to each other in a horizontal plane, and when the chisel reaction force during demolition work exceeds the set load, both of the guide mechanisms move voluntarily. A hydraulic concrete demolition machine characterized by being equipped with an overload prevention mechanism.