JPS6233385B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a building demolition device suitable for demolishing high-rise reinforced concrete buildings and the like.

``Conventional technology'' Traditionally, the demolition of reinforced concrete buildings was carried out by suspending a steel ball using a mobile crane and swinging it against concrete walls and columns, smashing or overturning the walls and columns. was. However, this method causes problems such as scattering of concrete pieces when steel balls are struck, vibrations when demolished objects fall over, other dust, noise, etc., and is highly dangerous during work, so it is not practical. is subject to many conditions.

For this reason, recently, demolition equipment using a crusher that crushes concrete using hydraulic pressure has been used. If this disassembly equipment is used, the occurrence of vibrations, dust, debris, etc. during work will be greatly reduced.

``Problems to be Solved by the Invention'' However, conventional demolition equipment has a structure in which a crusher is set at the end of the arm of the hydraulic excavator as a type of attachment for the hydraulic excavator.
It had the following drawbacks.

Working lift height and radius are small. Furthermore, if the lifting height is large, the operator will have to work close to his head, increasing the risk of falling crushed objects.

Due to its heavy weight, it is impossible to install it directly on the slab of a typical building without reinforcement.

A separate crane is required for lifting work such as removing demolished objects.

This invention was made in view of the above circumstances,
The work lift height and radius are sufficiently large to ensure operator safety, and the building can be demolished without the weight of the equipment acting on the building, and it is also possible to quickly switch from demolition work to lifting work. Another object of the present invention is to provide a building demolition device in which hydraulic piping connected to a hydraulic crusher does not interfere with work.

"Means for Solving the Problems" In order to solve the problems described above, the present invention provides a crane boom that is provided in the vicinity of a building to be demolished so as to be able to swing and raise and lower, and that includes the entire building within its working lifting range; A suspension wire supported by a boom so as to be freely paid out, a hydraulic crusher suspended from the tip of the suspension wire via a hook, and a hydraulic drive for the crusher disposed along the crane boom and the suspension wire. and a tag line device that is attached to the crane boom and around which the flexible hose is wound for feeding out and returning the flexible hose, and the tag line device is attached to the crane boom. The flexible hose is provided with a plurality of drums that are rotatably supported at a distance from each other, and the flexible hose is installed in the middle of the crane boom.
Wrapping it over the plurality of drums,
At least one of the drums is supported so as to be movable along the crane boom, and the drum is moved along the crane boom while adjusting the distance from the other drums in accordance with changes in the length of the flexible hose. It is a moving drum.

"Embodiment" Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

The building to be demolished in this example is a power plant building, and this building has an SRC structure,
Examples include high rises, open ceilings, and extremely large structural members. In this invention, as shown in FIG.
is installed, and a hydraulic crusher 3 is suspended from the hook 2 of the tower crane 1. On the other hand, a hydraulic pump unit 5 for driving the crusher 3 is installed on the ground around the tower crane base 4, and a hydraulic pipe 6 for driving the crusher is launched from the pump unit 5 along the mast 7. , a crane boom 8 and a hanging wire 9 are disposed along the crane boom 8 and the tip thereof is connected to the crusher 3.

Further, the crane boom 8 is provided with a tag line device 10 for letting out and returning the piping 6 according to the vertical movement of the hook 2 to prevent the piping 6 from sagging. Regarding the piping 6, the part along the mast 7 of the tower crane 1 is a fixed pipe, and the part along the crane boom 8 and wire 9 is a flexible hose so that it can follow the vertical movement and rotation of the crusher 3. do. Furthermore, if the crane boom 8 has a turning angle of 360 degrees or more, a swivel joint may be used at the connection between the fixed pipe and the flexible hose. In the figure, reference numeral 11 indicates an operation panel for operating the crusher 3, and reference numeral 12 indicates a cable for operating signals, which is connected to the hydraulic pump unit 5.

Next, the tag line device 10 will be explained with reference to FIGS. 2 to 4.

In FIG. 2, the right side is the tip side of the crane boom 8, and the left side is the base end side of the crane boom 8. Since the crane boom 8 is always held at an elevation angle of 30 degrees or more, The tagline device 10 is provided on the crane boom 8 in the following manner, with the distal end facing upward and the proximal end facing downward.

That is, a fixed drum 13 is rotatably attached to the tip side (upper side) of the crane boom 8, and a guide rail (moving mechanism) 14 is attached along the crane boom 8 to the proximal side (lower side) of the fixed drum 13.
A movable drum 15 is movably provided on the guide rail 14. As shown in FIG. 3, the guide rail 14 is fixed to the crane boom 8 by a support part 16 and a U-bolt 17, and a frame 19 is movably mounted on this guide rail 14 by wheels 18. The movable drum 15 is attached freely. In addition, 20 in the figure
is a stopper for the moving drum 15.

And the flexible hose (hydraulic piping)
6 are alternately passed over both drums 13 and 15 as shown in FIG. By doing so, when the crusher 3 is lowered, the crusher 3 pulls out the flexible hose 6, and accordingly the movable drum 15 of the tag line device 10 moves to the guide rail 1.
4 in the direction of arrow A in FIG. 2, the distance between the movable drum 15 and the fixed drum 13 becomes smaller, and the flexible hose 6 stretched between them is let out. On the other hand, when the lifting wire 9 of the crane is hoisted up and the crusher 3 is raised, the movable drum 1
5 descends on the guide rail 14 due to its own weight, the distance between the movable drum 15 and the fixed drum 13 increases, and the flexible hose 6 stretched between them becomes longer. 6 is renormalized. By moving the movable drum 15 in this manner, the flexible hose 6 can be kept in tension at all times without loosening it. Therefore, the flexible hose 6 does not interfere with other equipment and does not get in the way of work.

By the way, in the actual demolition work, first, the boom 8 is rotated by the operation of the operator M of the tower crane 1, the crusher 3 is lowered from above onto the predetermined demolition equipment, and the worker M on the work scaffold is The crusher 3 is set at the crushing point with the signal and with the assistance of the sling worker. Next, the worker M operates the operation panel 11 from on the scaffolding and directly performs the crushing work while observing the crushing state, thereby dismantling the building A one by one from above. Further, when the dismantling has been completed to some extent, the crusher 3 is removed from the hook 2 of the crane 1, and the dismantled material is removed. Here, since the crusher 3 is suspended via the hook 2, it can be easily removed, and the work of lifting the demolished object can be started quickly.

"Effects of the Invention" As explained above, the demolition apparatus of the present invention is equipped with a crane boom that can cover the entire building to be demolished, and the crusher is suspended from the tip of the crane boom's suspension wire via a hook. Since the crusher can be suspended from above the building and the demolition work can be carried out, the working lifting height and working radius can be made sufficiently large.

Furthermore, the flexible hose installed on the crane boom is wrapped around a plurality of drums installed on the crane boom, and the drums move according to the length of the flexible hose, so that the flexible hose does not become loose. The flexible hose can follow the rotation of the crane boom and the lifting and lowering of the crusher. Therefore, the flexible hose does not interfere with other equipment, which is advantageous in terms of safety, and the crusher can be smoothly moved to every corner of the building to be demolished.

Furthermore, the apparatus of the present invention can be used to demolish buildings of any size because it is installed near the building and the weight of the equipment is not placed on the building, and the crusher can be removed from the demolition work by removing it from the hook. Able to switch to heavy work quickly. Therefore, there is no need to provide a separate lifting machine.

Further, depending on the selection of the crane boom, a large crusher can be used, and the crusher can be freely selected depending on the scale of the building to be demolished.

[Brief explanation of the drawing]

1 to 4 show an embodiment of the device of the present invention, in which FIG. 1 is a side view, FIG. 2 is a side view of the tag line device, and FIG. 3 is a partial sectional view of the tag line. FIG. 4 is a perspective view for explaining the state in which the flexible hose is wound. 1... Tower crane, 2... Hook, 3...
Crushing machine, 6...flexible hose (hydraulic piping), 8...crane boom, 9...hanging wire.

Claims (1)

[Claims] 1. A crane boom that is installed in the vicinity of the building to be demolished so as to be able to swivel and raise and lower, and that includes the entire building within its working lifting range, a hanging wire that is supported by the crane boom so that it can be freely extended, and a hook attached to the tip of the hanging wire. a hydraulic crusher suspended from the crane; a flexible hose for hydraulically driving the crusher disposed along the crane boom and the suspension wire; and a flexible hose attached to the crane boom and wrapped around the flexible hose. and a tag line device for letting out and returning a flexible hose, the tag line device comprising a plurality of drums each rotatably supported by a crane boom at a distance from each other, The flexible hose is wound around the plurality of drums in the middle of the crane boom, and at least one of the drums is supported so as to be movable along the crane boom, and the length of the flexible hose is changed. A building demolition device characterized in that it is a movable drum that moves along with a crane boom while adjusting the distance between it and other drums.