JPS5916063B2 - High-rise concrete structure destruction equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a destruction device for destroying and demolishing high-rise concrete structures such as chimneys.

Conventionally, when demolishing a high-rise concrete structure, such as a chimney, a scaffold was built around the chimney, and workers climbed onto this scaffold and used hammers, band breakers, etc. to destroy and demolish the chimney sequentially from the top to the bottom. Another method was to cut off the base of the chimney and demolish it by lowering it to the ground.

However, the former method has the disadvantage that pieces of the chimney are scattered over a wide area, making it dangerous and inefficient, while the latter method causes the chimney, a long object, to fall to the ground, causing an accidental injury to workers. (This is not desirable from a work safety standpoint as it may lead to accidents.)

Furthermore, both methods are disadvantageous in that they involve large noises and vibrations, resulting in pollution problems.

A device that crushes concrete using compressive stress has also been proposed, but its crushing ability is inferior, and because it uses compressive stress, it cannot cut reinforcing bars. The blade must be attached,
In this case, the concrete is crushed in a concrete crushing section and the reinforcing bars are cut in a reinforcing bar cutting section, which is a troublesome and complicated operation.

Under these circumstances, demolition companies for this type of high-rise concrete structures are looking for demolition equipment that can efficiently demolish, ensure work safety, and work with low noise and vibration. It was desired from an early stage.

The present invention has been made in view of the above circumstances, and provides a high-rise concrete structure destruction device that can destroy high-rise concrete structures with high efficiency, and also achieve operational safety, low noise, and low vibration. The purpose is to

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

The cutter device 1 has a scissor-shaped cutter part 2 that can be opened and closed, and the cutter part 2 is made up of a first cutter unit 3 and a second cutter unit 4.

A hydraulic device 6 for opening and closing the cutter part 2 is provided inside the case body 5. It stands out from the outside.

The hydraulic device 6 includes a cylinder body 1 and a piston shaft 8, and the cylinder body 7 is rotatably supported by a mounting piece 10 via a pin 9.

On the other hand, the first cutter unit 3 includes a crank arm 11 and a shaft fitting part 12, which are integrally constructed and constituted as a crank lever 13 as a whole, and the shaft fitting part 12 is connected to the side plate 14 of the case body 5, Crankshaft 15 fixed to 14
Thus, the first cutter unit 3 is rotatably supported by the crankshaft 15.

Further, the crank arm 11 is rotatably supported by the piston shaft 8 via a crank pin 16, and the reciprocating motion of the piston shaft 8 is converted into the rotational motion of the first cutter unit 3. It is rotationally driven by a hydraulic device 6.

The second cutter unit 4 is fixed to the base frame 11.

Both of the two cutter units 3 and 4 are arm-shaped, and cutter blades 18 and 19 are fixed to these, respectively.

At the tip of the cutter portion 2, opposing clamping plates 20 and 21 are provided.
is provided.

Reference numerals 23 and 24 are pressure fluid inlets and inlets to which hoses 37 and 38 are connected, respectively, and the necessary piping for the hydraulic system 6 is provided.

25 is a hanging bracket provided on the case body 5.

In the above configuration, when pressure fluid flows in from the pressure fluid inlet/outlet 23 and the piston shaft 8 moves in the direction of the arrow a in FIG. Then, the first cutter unit 3 performs a closing movement.

By this closing operation of the first cutter unit 3, the concrete is crushed, cut, and destroyed by the action of the cutter blades 18 and 19 due to shear stress.

It is also possible to clamp or crush concrete between the clamping plates 20° and 21.

Pressure fluid flows in from the pressure fluid inlet 24, and the piston shaft 8
When the cutter unit 3 is moved away in a direction opposite to the a direction, the first cutter unit 3 rotates in the opposite direction to the above direction, and the first cutter unit 3 performs an opening movement.

During the opening and closing movement of the first cutter unit 3, the hydraulic device 6
It swings up and down around the center.

As shown in FIG. 1, the cutter device 1 configured as described above is used by being suspended from a telescoping mast 21 of a mobile work machine 26 such as a lift truck.
A pulley 2 is attached to an arm 28 provided at the tip of the mast 2γ.
9 and 30 are pivotally supported, and a winch wire 31 with one end attached to the arm 28 is wound around a movable pulley 32 and guided to the pulleys 2-9 and 30, and is pivotally supported on the chassis 33 of this mobile work machine 26. The other end of the winch wire 31 is attached to a take-up roll 34.

A wire 36 is suspended from a hook 35 connected to a movable pulley 32.
One end is locked, and the other end is locked to the hanging bracket 25 of the cutter device 1, so that the hanging wire 3
Via 6, the cutter device 1 is suspended from a mast 21.

And a hose 31 connected to the pressure fluid inlets 23 and 24
At 38, pressure fluid is supplied and discharged from a pressure fluid pump attached to the mobile working machine 26 to open and close the first cutter unit 3, thereby cutting and destroying the high-rise concrete structure.

In this way, the opening/closing operation of the first cutter unit 3 is performed by the mobile work machine 2.
This is done by the operation in step 6.

The mast 21 of the mobile work machine 26 in the illustrated example has a large number of mast-constituting cylinders 27a, 27b, 2γC2... sequentially slidably fitted into each mast-constituting cylinder 27a, 27b.
, 27c, ... between the cylinders 39a,
39b, = and pistons 40a, 40b.

These 40
3° 40b, . . . by protruding and retracting, the length of the mast 21 can be expanded and contracted as desired.

The hanging height of the cutter device 1 can be adjusted by expanding and contracting the length of the mast 2T in this way, but the position of the movable pulley 32 can also be raised or lowered by winding up the winch wire 31 or lowering it in the opposite direction to the winch wire 31. The hanging height of the cutter device 1 can also be adjusted by this.

As shown in FIG. 1, when demolishing the chimney 41, the mast 21 is extended and the cutter device 1 is suspended at the required height, and the upper edge of the chimney 41 is first cut into the first cutter unit 3. The upper part of the chimney 41 is cut and destroyed by the cutter blades 18 and 19 by sandwiching the chimney 41 with the second cutter unit 4 and rotating the first cutter unit 3 to close it.

Furthermore, the upper part of the chimney can be crushed and destroyed using the clamping plates 20 and 21.

By repeating such cutting or crushing operations, the movable pulley 32 is gradually lowered, and the cutter device 1 is shifted to a lower position, while the chimney 41 is successively destroyed from the upper part and the demolition work is proceeded to reach the lower part. It is.

As the demolition work progresses, debris collects around the chimney 41, but the debris can be clamped between the clamping plates 20 and 21, the cutter device 1 can be moved to an appropriate position, and the debris can be loaded onto a transport truck or the like. .

Note that if reinforcing bars are buried in a high-rise concrete structure, the cutter blades 18 and 19 can similarly cut the reinforcing bars.

The present invention is not limited to the case of demolishing the chimney described in the above embodiment, but can be similarly applied to demolishing other buildings such as high-rise buildings.

As explained above, the present invention destroys high-rise concrete structures by crushing and cutting them using shear stress, so the structures can be demolished extremely efficiently, and the debris does not scatter over a wide area, making the work less dangerous. do not have.

Furthermore, since no manpower is required, work costs can be reduced.

Furthermore, since the destruction is done by crushing and cutting using shear stress, the work can be carried out with low noise and vibration without making much noise or vibration, and this invention is also useful from the viewpoint of pollution prevention.

Furthermore, according to the cutter device of the present invention, there is no need to provide separate concrete crushing sections and reinforcing bar cutting sections, so one part of the cutter can crush concrete and cut reinforcing bars at the same time, dramatically improving work efficiency. There is an effect that can be done.

In addition, since the demolition work can be carried out along the vertical direction of the high-rise concrete structure, the work area can be reduced.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is an explanatory diagram of the usage state when the device of the present invention is used for chimney demolition work;
FIG. 2 is a longitudinal sectional view of the cutter device, and FIG. 3 is a perspective view of the cutter device. 1... Cutter device, 2... Part of cutter, 26... Mobile working machine, 2γ... Mast, 41... Chimney.

Claims (1)

[Claims] 1. A cutter device is suspended from a telescoping mast of a mobile work machine in a height-adjustable manner; A high-rise concrete structure destruction device characterized in that the cutter is partially closed by operation of the mobile working machine so that the high-rise concrete structure is crushed, cut, and destroyed by shear stress.