JPS61207766A - Disassembling of chimney - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a method for dismantling a chimney made of reinforced concrete, concrete, or the like.

<Conventional technology> Conventionally, methods for dismantling this type of chimney include making a chimney into a chimney, or constructing scaffolding around the chimney, and dismantling the chimney by manually breaking it into smaller pieces starting from the top. .

However, the former demolition method requires a large open space around the chimney, and has the disadvantage that when the chimney falls, it causes large shocks and vibrations, and is dangerous as concrete and earth scatter. . In addition, the latter dismantling method does not require an open space around the chimney, but it also requires assembly of scaffolding,
Demolition costs a lot of money and takes a long time, and in addition, demolition requires people to climb to the top of the chimney, making it dangerous and inefficient.

<Object of the invention> Therefore, the object of this invention is to eliminate the need for a large open space,
Also, there is no need for scaffolding, and people do not have to climb to the top of the chimney.
To provide a method for dismantling chimneys that can safely, inexpensively, and quickly dismantle chimneys.

<Structure of the invention> In order to achieve the above object, the chimney solution of this invention! + Shisha I) The concrete crusher is equipped with a television camera that captures images of the side surface of the part to be crushed, and the concrete crusher is moved horizontally. A crane is used to raise and lower a platform that can be freely rotated, while the crane and concrete crusher are operated based on image information of the part to be crushed that is displayed on a television receiver installed in the operation section. The concrete crusher is characterized in that by vertically moving and rotating the concrete crusher, the position and posture are controlled, the part to be crushed is held between the parts, and the crushing movement is performed.

<Example> Hereinafter, the present invention will be explained in detail with reference to illustrated embodiments.

In Figure 1, ■ is a chimney, 2 is a traveling crane equipped with a boom 3 that is taller than the chimney 1, 5 is a stand suspended from the boom 3, and 6 is rotatable on the stand 5. 7 is a television camera (hereinafter referred to as a television camera) installed in the concrete crusher 6; 11 is a television receiver installed in the driver's cab of the crane 2 (hereinafter referred to as a television receiver); 12 is a television receiver installed in the operation room 13 on the ground of the concrete crusher 6.

As shown in FIG. 2, the concrete crusher 6 has a rotary table I7 fixed to a rotating shaft 16 hanging from the table 5, and a motor 18 fixed on the table 5 moves the rotating shaft 16 into a worm gear. It rotates via a mechanism 21 so that the turntable 17 can be rotated.

A fixed crushing arm 22 having an abbreviated shape is suspended from the rotary table 17 by a hydraulic cylinder 23 and a link 24 for tilting posture control. The hydraulic cylinder 23 and link 24 are approximately parallel, and the fixed crushing arm 2
The tip 22a of the chimney l is connected to the outer peripheral surface 28 of the crushed part 28
It is arranged so that it can be placed parallel to a. A movable crushing arm 26 is attached to a shaft 25 provided at the center of the horizontal part of the fixed crushing arm 22.
It is pivoted at one end. The upper end of the fixed crushing arm 22 and the center of the movable crushing arm 26 are connected by a hydraulic cylinder 2 for crushing motion.
7, and when the hydraulic cylinder 27 expands and contracts, the distal end 22a of the fixed crushing arm 22 and the distal end 26a of the movable crushing arm 26 move toward and away from each other, thereby crushing the portion to be crushed 28. There is. The protrusion 55 on the tip 22a of the fixed crushing arm 22 and the protrusion 56 on the tip 26a of the movable crushing arm 26 apply intensive force to the crushed portion 28 during crushing, thereby promoting destruction.

Further, at the tip of the fixed crushing arm 22, as shown in FIG. 2-3, there is an elastic resin plate 3 wider than the fixed crushing arm 22.
5 is made to protrude toward the movable crushing arm 22 side, and an elastic steel plate 36 having the same width and slightly protruding from the tip of the fixed crushing arm 22 is superimposed on the elastic resin plate 35 from the rear surface. The elastic resin plate 35 and the elastic steel plate 3
6 is fixed to the fixed crushing arm 22 with a presser plate 37 and bolts. The elastic resin plate 35 and the elastic steel plate 36 are elastically deformed and come into close contact with the outer circumferential surface 28a of the portion to be crushed 28,
Moreover, it covers both horizontal sides and the upper part of the fixed crushing arm 22 to guide crushed pieces of concrete or the like into the chimney l.

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A movable blade 32 for cutting horizontal reinforcing bars is provided at the back near the axis 25 of 6. Furthermore, the fixed crushing arm 22 has a fixed blade 33 for cutting vertical reinforcing bars projecting horizontally, while the movable crushing arm 26 has a movable blade 34 for cutting vertical reinforcing bars projecting horizontally.

On the other hand, a horizontal arm 41 is provided on the rotary table 17 so as to be swingable in the horizontal direction, and a vertical arm 42 is provided at the tip of the arm 41 so as to be tiltable in the vertical direction. has been established. The horizontal arm 41 can be freely pivoted horizontally by a hydraulic cylinder 43, and the vertical arm 42 can be freely swung vertically by a hydraulic cylinder 44. Therefore, the television camera 7 can image the side surface (radial cross section) of the crushed portion 28 of the chimney l by controlling its position using the hydraulic cylinders 43, 44. Further, the television camera 7 can be rotated in the X direction by means not shown, and the lens 49 of the television camera can be moved in the optical axis direction.

On the other hand, a driver 51 in the cab of the crane 2 and an operator 52 in the operation room 13 of the concrete crusher 6 can communicate with each other through a voice communication device 53.

Incidentally, a sand mat 55 is provided around the chimney 1 to prevent falling objects such as concrete pieces from scattering from the upper part of the chimney 1. Further, a plurality of chains 40 are suspended from the fixed crushing arm 22 of the concrete crusher 6 in a curtain-like manner to prevent crushed pieces from scattering. Note that instead of this, a net-like object may be hung.

Using the concrete crusher 6 or the like having the above configuration, the chimney I is dismantled as follows.

First, the crane 2 lifts the platform 5 and the concrete crusher 6 higher than the top of the chimney l, and the operator 52 of the concrete crusher 6 pulls in and operates the crushing hydraulic cylinder 27 while watching the television 41112. , the movable crushing arm 26 is operated to open. Thereafter, the driver in the cab of the crane 2 lowers the concrete crusher 6 while watching the television receiver ti, and inserts the part to be crushed 28 between the fixed crushing arm 22 and the movable crushing arm 26. Then, the hydraulic cylinder 43 for horizontal movement and the hydraulic cylinder 44 for vertical movement are operated to adjust the position and attitude of the television camera 7, so that the television camera 7 can move the side surface of the part to be crushed 28 into the concrete crusher 6. To enable imaging without being disturbed. Next, the operator 52 of the concrete crusher 6 presses the tip 2 of the fixed crushing arm 22 while watching the television receiver 12.
The hydraulic cylinder 23 is telescopically operated so that the hydraulic cylinder 2a comes into contact with the outer circumferential surface 28a of the portion to be crushed 28 in parallel. At this time,
The elastic resin plate 35 and the elastic steel plate 36 are elastically deformed as shown by the dashed line in FIG. invite.

The operator 52 also operates the projection 5 at the tip of the fixed crushing arm 22.
5 and the protrusion 56 at the tip of the movable crushing arm 26
The rotary table 17 is rotated by the motor 18 so as to hit the outer circumferential surface 28a of the rotary plate 8 at right angles. In this way, the position and posture of the concrete crusher 6 can be controlled by the driver 51 and the operator 5.
After making adjustments while communicating with each other through the voice communication device 53, the crushing hydraulic cylinder 27 is extended and the fixed crushing arm 22 and the movable crushing arm 26 crush the crushed portion 28. The thus crushed concrete pieces are guided into the chimney 1 by an elastic resin plate 35 and an elastic steel plate 36. Therefore, concrete pieces and the like are prevented from falling outside the chimney, and safety is ensured. Further, if concrete fragments are scattered outward, this is prevented by a curtain-like chain 40 suspended from the fixed crushing arm 22. Part to be crushed 2
By lowering the concrete crusher 6, the horizontal reinforcing bars and vertical reinforcing bars inside 8 are cut by a fixed blade 31 for cutting the horizontal reinforcing bars at the back,
Movable blade 32, fixed blade 33 for cutting vertical reinforcing bars, and movable blade 3
4, an elastic resin plate 35 and an elastic steel plate 36
is guided into the chimney 1.

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2 communicate with each other using the voice communication device 53,
By operating the crane 2 and the concrete crusher 6, the chimney 1 is sequentially moved downward in a spiral manner.

As described above, according to this chimney demolition method, the fixed crushing arm 22 of the concrete crusher 6 is attached to the outer periphery of the chimney 1,
The movable crushing arm 26 is pressed against the fixed crushing arm 22 by the crushing hydraulic cylinder 27 to crush the crushed portion 28, and the concrete crushed pieces are caused to fall into the chimney l by the elastic resin plate 35 and the elastic steel plate 36. So,
Chimneys can be dismantled safely and quickly, and the trouble of collecting crushed concrete pieces can be saved. In addition, the crane driver 51 took a picture of the side surface of the part to be crushed 28 that was imaged by the television camera 7.
and an operator 52 of the concrete crusher 6 is watching on the ground via television receivers 11 and 12 and an audio communication device 53.
While communicating with each other, the crane 2 and the drive motor 1 of the rotary table 17 check the position and posture of the concrete crusher 6.
8 and the tilting hydraulic cylinder 23 are operated and controlled, and the crushing hydraulic cylinder 27 is operated to crush the portion to be crushed 28 . Therefore, there is no need to install scaffolding around the chimney, and there is no need for workers to climb up the chimney, reducing construction costs, shortening the construction period, and eliminating the dangers of working at heights.

In the above embodiment, a fixed blade 31 and a movable blade 32 for cutting horizontal reinforcing bars are used.
Furthermore, since a fixed blade 33 and a movable blade 34 for cutting vertical reinforcing bars are provided, even a chimney having reinforcing bars can be dismantled efficiently. Also, remove crushed concrete pieces from the chimney! Since an elastic resin plate 35 and an elastic steel plate 36 are provided to guide the inside,
The scattering of concrete fragments, etc. outside the chimney is prevented, safety is increased, and collection of concrete fragments, etc. is facilitated.

The elastic steel plate 36 can guide even heavy crushed pieces into the chimney 1.

In the above embodiment, television receivers were provided both in the cab of the crane 2 and in the operation room 13 of the concrete crusher 6, but in the operation room 13 of the concrete crusher 6 and in the crane 2
The driver's cab may be integrated with the driver's cab, and only one television receiver may be provided. In this case, a voice communication device is not required.

<Effects of the Invention> As is clear from the above, according to the present invention, a crane and a concrete crusher are operated while viewing the side surface of the crushed portion of a chimney captured by a television camera using a television receiver on the ground. The vertical movement, rotational movement, and crushing movement of the concrete crusher are controlled to crush the parts to be crushed, so there is no need for large open spaces, no scaffolding, and no need for workers to work at heights above chimneys. This allows chimneys to be dismantled safely, inexpensively, and quickly.

[Brief explanation of the drawing]

FIG. 1 is a front view of an embodiment of the present invention, FIG. 2 is a front view of a concrete crusher, and FIG. 3 is a sectional view taken along the line ■--■ in FIG. 1... Chimney, 2... Crane, 3... Boom, 5
...stand, 6...concrete crusher, 7...TV camera, 11.12...TV receiver.

Claims (1)

[Claims] (1) A crane is used to suspend a scissor-shaped concrete crusher equipped with a television camera that images the side surface of the chimney to be crushed so that it can rotate horizontally, while a television receiver is installed in the operation section. and operating the crane and concrete crusher based on the image information of the part to be crushed that is displayed on the television receiver,
A method for dismantling a chimney, characterized in that the above-mentioned concrete crusher performs vertical movement, rotational movement, and crushing movement.