JPH02272170A - Demolition of building - Google Patents

Abstract

PURPOSE:To attain demolishing work safety without pollution by a method in which a holder hung down from each crane and a cutter are operated on remote control basis, and the constituents of building are cut while being held and moved to the surface of land. CONSTITUTION:A cutter 5 consisting of a prime mover such as engine, a radio operator, and an oil-pressure slewing and tilting cutter is hung down from a crane 2. Also, a holder 105 consisting of an oil-pressure hook device to be opened or closed from the surface of land is hung down from a crane 102. Television cameras are also set on the tips and cutters of the cranes. The constituents 200a of building are held by the holder 105, cut off by the cutter 5, and moved to the surface of land by the cranes. Operations can thus be safely made without vibration, noise, and dust and also without scaffold.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a method for dismantling a building by cutting and separating the constituent members of the building and moving them to the ground.

<Conventional technology> In the conventional method of demolition of a building, a scaffold for demolition is first erected near the building, and a worker climbs up to the top of this scaffold and separates the building components from the building by gas-cutting them. After cutting,
The above components are allowed to fall to the ground as they are.

<Problems to be Solved by the Invention> However, the conventional building demolition method described above has a problem in that when the separated structural members are dropped, the impact of the fall generates vibrations, noise, and dust. Furthermore, it takes time and effort to prepare a special scaffold for disassembly, and moreover, since the workers work at a high place on this scaffold, there is a risk that the workers may lose their balance and fall.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a method for demolishing a building that is vibration-free, noise-free, dust-free, does not require the provision of scaffolding for demolition, and can be carried out safely.

<Means for Solving the Problems> In order to achieve the object described in item 1, the building dismantling method of the present invention grips the structural members constituting the building with a gripping device operated by remote control, and the gripping device was suspended by a crane, a cutting device operated by remote control was suspended by the crane, and the above-mentioned component was cut and separated from the building by this cutting device, and then this component was grasped by the above-mentioned gripping device. It is characterized by being able to be moved to the ground using a crane.

Further, it is preferable that the component is gripped and suspended at a plurality of locations by a plurality of the gripping devices.

<Operation> In addition to cutting and separating with a cutting device, the cut and separated components are not dropped as they are, but are suspended and moved to the ground by a crane, which eliminates the generation of vibration, noise, and dust.

In addition, since the worker does not directly cut and separate, there is no need to provide a special scaffold, and since the worker does not have to work at a high place, there is no risk of the worker falling.

In addition, when the component is gripped and suspended at multiple locations using a gripping device, the lower end of the main shaft 35 provided at the main shaft 35 when moving this component to the ground is compared to the case where the component is gripped and suspended at one location. A rotating frame 34 is attached to the. This main shaft 35
can be freely rotated in forward and reverse directions by a hydraulic motor 27 via bevel gears 37 and 38. A first bracket 41 is fixed to the center of the rotating frame 34. The upper end of an L-shaped second bracket 43 is rotatably connected to the lower end of the first bracket 41 via a pin 42. Both ends of an elevation hydraulic cylinder 47 are connected to the left end of the first bracket 41 and the right end of the second bracket 43 via pins 45 and 46. The second bracket 43 can be freely raised or lowered by extending or contracting the raising/lowering hydraulic cylinder 47. A main body 52 of a cutter device 51 is fixed to the lower end of the second bracket 43. A substantially central portion of a scissor-shaped cutter 5556 is rotatably attached to this main body 52 via pins 53 and 54. A rod at the tip of a hydraulic cylinder 6162, which is pin-coupled to the main body 52, is pin-coupled to the upper end of the cutter 55, 56, so that the cutter 55, 56 can perform the cutting operation as shown by the arrow X, reducing the possibility of the cutter being removed. This makes it possible to work more safely and reliably.

<Example> Hereinafter, the building demolition method of the present invention will be explained in detail with reference to illustrated examples.

First, the cutting device and gripping device used in this invention will be explained in order.

As shown in FIG. 2.3, this cutting device 5 is mounted on a stand 21 that also serves as an oil tank, with an engine 22 and a hydraulic pump 26.
It is equipped with a hydraulic motor 27, an engine-equipped generator 31, and a radio control device 32. The engine 22 and the hydraulic pump 26 are arranged coaxially, and the rotational force of the engine is transmitted to the hydraulic pump 26 via the reduction gear device 23. 1. The hydraulic pump 26 and the hydraulic motor 27 are connected by a hydraulic pipe (not shown). The engine-equipped generator 31 supplies power to a radio control device 32 having an antenna 33, a television camera 7, etc., which will be described later. The platform 21 is suspended from the crane 2 by a rope 6 connected to a hanging ring. I try to have 21 tables. Therefore, this cutter device 51 can be rotated around the vertical axis as shown by the arrow Y by rotating the swing frame 34 with the hydraulic motor 27, and the hydraulic cylinder 4 for elevation can be rotated.
By activating 7, it is possible to freely raise the cutting position as shown by arrow Z and locate the desired cutting position, and in this state, by activating hydraulic cylinders 61 and 62, cutting operation can be performed as shown by arrow X. It is. The hydraulic cylinders 61, 62 and the elevation hydraulic cylinder 47 are connected to the hydraulic pump 26 by oilfield piping (not shown). A television camera 7 is attached to a portion projecting downward from the end of the rotating frame 34 in order to monitor the cutter device 51. Further, a television camera 57 is attached to the boom 3 of the crane 2 for monitoring the entire cutting device 5.

Note that 29 is a rotary joint.

This cutting device 5 operates as follows. This cutting device 5
Move the boom 3 of the crane 2 to position it on the structural member to be cut in the building, send a control command to the antenna 33 of the radio control device 32 via the antenna 71, drive the engine 22, and start the generator with the engine. Drive machine 3I. Then, oil is supplied from the hydraulic pump 26 to the hydraulic motor 27 and the elevating sill 47, the rotating frame 34 is rotated to a predetermined position, and the cutter device 51 fixed to the second bracket 43 is moved as shown by the arrow Z. , the part to be cut is raised and raised at a predetermined angle, and in this state, the cutting hydraulic cylinders 61 and 62 are operated to cut and separate the above-mentioned structural members.

Next, as shown in FIGS. 4(a) and 4(b), this gripping device 105 is equipped with a pair of hooks 155, 156 connected by connecting rods 148, 147, and a U-shaped holder 130. Each pair of arms 1 are rotatably connected at their upper ends by connecting pins 145.
The number is less than 31,132. ”2 Kifu, Tsuku 155, 1
56 are intersected with each other, and the connecting pins 15
3, they are rotatably connected. Then, connect the upper ends of the hooks 155156 to the connecting pins 146.
1 Contract the hydraulic cylinder 161 and hook 155156
close to grip this component.

Using the cutting device 5 and gripping device 105 described above,
Demolish the building as follows:

First, as shown in FIG.
The crane 2 is moved to position it above the component 200a of the building 200 to be cut and separated, and the operating direction of the hydraulic cylinder 161 is controlled on the ground to remove the gripping devices 105, 105.
This component 200a is gripped at two places. Then, while the gripping devices 105, 105 are suspended by the crane 102, the cutting device 5 suspended by the crane 2 is moved to the vicinity of the part of the object 200 to be cut and separated. The cutting device 5 is remotely operated by radio control to cut and separate the structural member 200a from the building 200. Thereafter, the component 200a is moved to the ground by a crane while being held by the holding devices 105, 105.

42, the arms 132 and 131 are rotatably connected to the lower ends of the arms 132 and 131. In addition, the connecting pin 142,
Bracket 144.143 in the center of 14.6 respectively
are attached, and both ends of the hydraulic cylinder +61 are connected to these brackets 144 and 143. This hydraulic cylinder 161 expands and contracts by hydraulic pressure from the ground through hydraulic piping 160.

The entire gripping device 105 is then held in the holder 130.
It is suspended from a crane 102 by a lobe 106 connected to the crane 102. The boom 103 of this crane 102 has
A television camera 157 is attached to monitor the entire gripping device 105.

This gripping device 105 operates as follows. First, this gripping device 105 is positioned on a component of a building to be cut and separated by moving the boom 103 of the crane 102.

Oil is supplied from the ground through the hydraulic piping 160 to extend the hydraulic cylinder 161, open the hooks 155 and 156, and after taking the above-mentioned components into the hooks, lower the hydraulic pressure and repeat this series of operations. 1 Building 200
disassemble.

In this way, the cutting device 5 cuts and separates the structural members 200a, and the cut and separated structural members 200a are not dropped as they are, but are suspended by a crane and moved to the ground, so vibrations, noise, and dust are not generated. You can do it like this. In addition, since workers do not directly cut and separate, there is no need to set up special scaffolding for demolition, and there is no need to work at high places, which eliminates the risk of workers falling and improving safety. improves.

In addition, two gripping devices 105 are used to hold the component part shrine 200a.
．． Since the 105 is gripped and suspended at two locations, there is less chance of this component falling off when moving it to the ground, making it safer than when it is gripped and suspended at one location. Can work reliably. Of course,
It may also be held and suspended from three or more locations.

<Effects of the Invention> As is clear from the following, the building demolition force method of this invention grasps the structural members constituting a building with a grasping device operated by remote control, and suspends this grasping device with a crane. While hanging, the cutting device, which is operated by remote control, is suspended by a crane.
After cutting and separating the component from the building with this cutting device, with this component being gripped by the gripping device,
Since it is moved to the ground using a crane, there is no vibration, no noise, and no dust, and there is no need to set up scaffolding for demolition, making it possible to work safely.

Furthermore, when the component is gripped and suspended at a plurality of locations by a plurality of gripping devices, the work can be carried out more safely and reliably.

[Brief explanation of drawings]

FIG. 1 is a diagram showing a state in which the building demolition method of this invention is being carried out, FIG. 2 is a diagram showing a cutting device used in this invention,
Figure 3 is a diagram showing the main parts of the cutting device, Figure 4 (a)
, (b) is a diagram showing a gripping device used in the present invention. 2102... Crane, 3,103 ・Boom, 5
- Cutting device, 21 - Stand, 22... Engine, 26 -
Hydraulic pump, 31 Generator with engine, 32 Radio control device, 34 Swivel frame, 51 Cutter device, 47 61 62 161 Hydraulic cylinder, 105
...gripping device, 155,156 hook. Patent applicant Nippon Steel Corporation and one other agent Patent attorney Haka Maeda and one other person

Claims (2)

[Claims] (1) Grasp the structural members that make up the building with a gripping device operated by remote control, suspend this gripping device with a crane, and suspend the cutting device operated by remote control with a crane to perform cutting. A method for dismantling a building, the method comprising: cutting and separating the component from the building using a device, and then moving the component to the ground using a crane while holding the component with the gripping device. (2) The method for dismantling a building according to claim 1, characterized in that the structural member is gripped and suspended at a plurality of locations by a plurality of the gripping devices.