JP2024100303A - Chimney demolition system and chimney demolition method - Google Patents

Abstract

To provide a chimney demolition system and a chimney demolition method that enable easy dismantling of chimneys.
[Solution] The chimney demolition system 1 comprises a work vehicle 2 that is installed on the wall surface of the chimney top and crushes the area of the wall surface of the chimney top that is radially opposite the side on which it is installed, a wire rope 3 that has one end connected to the work vehicle 2 via the chimney top and the other end connected to the ground, and suspends the work vehicle 2 from the chimney top, and a pulley 4 that is removably attached to the chimney top and guides the wire rope 3 to prevent it from coming off when it is hung.
[Selected Figure] Figure 1

Description

The present invention relates to a chimney demolition system and a chimney demolition method.

When demolishing chimneys, a widely used method is for workers with crushing tools to reach a high place and crush the chimney little by little from the top. For example, Patent Document 1 discloses a method in which temporary scaffolding is set up around the chimney and workers perform the chimney crushing work on the temporary scaffolding.

JP 2017-31681 A

The method of Patent Document 1 has the problem that it takes a lot of time and effort to assemble and dismantle the temporary scaffolding before and after the demolition work. There is also the problem that it is necessary to prepare a hoist to lower the fragments from the temporary scaffolding and to perform slinging work for the fragments on the temporary scaffolding. For this reason, there is room for improvement in terms of reducing the labor required for the series of work processes involved in dismantling a chimney.

The present invention was made against this background, and aims to provide a chimney demolition system and a chimney demolition method that can easily dismantle chimneys.

In order to achieve the above object, the chimney demolition system according to the present invention comprises:
A crusher is installed on a wall surface of the chimney top and crushes an area of the wall surface of the chimney top that is radially opposite to the side where the crusher is installed;
a rope having one end connected to the crusher and the other end connected to the ground via the chimney top, for suspending the crusher from the chimney top;
A guide means is detachably attached to the top of the chimney and guides the rope so that it does not come off when the rope is hung on the top of the chimney.
Equipped with.

The present invention provides a chimney demolition system and a chimney demolition method that allow chimneys to be easily dismantled.

1 is a diagram showing a configuration of a chimney demolition system according to an embodiment of the present invention. FIG. 1 is a side view showing a configuration of a work vehicle according to an embodiment of the present invention. 1 is a plan view showing a configuration of a work vehicle according to an embodiment of the present invention. FIG. 1A is a diagram showing a pulley according to an embodiment of the present invention attached to the edge of the top of a chimney, and FIG. 1B is a front view showing the configuration of the pulley in FIG. 2 is a flowchart showing the flow of a chimney dismantling method according to an embodiment of the present invention. 1 is a diagram showing the state in which a wire rope and a pulley are attached in a chimney dismantling method according to an embodiment of the present invention. FIG. 1 is a diagram showing a working vehicle climbing up a chimney wall in a chimney dismantling method according to an embodiment of the present invention. FIG. 1 is a diagram showing a state in which a work vehicle crushes the top of a chimney in a chimney dismantling method according to an embodiment of the present invention. FIG. 1 is a diagram showing a state in which a work vehicle moves a pulley attached to the top of a chimney in a chimney dismantling method according to an embodiment of the present invention. FIG. 1 is a diagram showing the state in which a work vehicle has reached the top of a chimney on the crushed side in a chimney dismantling method according to an embodiment of the present invention. FIG. 1 is a diagram showing a state in which a work vehicle moves a pulley attached to the top of a chimney in a chimney dismantling method according to an embodiment of the present invention. FIG. 1 is a diagram showing a state in which a work vehicle crushes the top of a chimney in a chimney dismantling method according to an embodiment of the present invention. FIG. 1 is a diagram showing a state in which a work vehicle moves a pulley attached to the top of a chimney in a chimney dismantling method according to an embodiment of the present invention. FIG.

The chimney demolition system and chimney demolition method according to the embodiment of the present invention will be described in detail below with reference to the drawings. In each drawing, the same or equivalent parts are given the same reference numerals.

As shown in FIG. 1, the chimney demolition system 1 is a system that crushes a part of the chimney top using a work vehicle 2 while the work vehicle 2 is suspended from a wire rope 3 suspended from the chimney top. The chimney demolition system 1 includes the work vehicle 2, a wire rope 3 that is connected at one end to the work vehicle 2 and suspends the work vehicle 2, and a pulley 4 that is detachably attached to the chimney top and on which the wire rope 3 extending upward from the work vehicle 2 is hung. The other end of the wire rope 3 is fixed to the bottom inside the chimney using an anchor (not shown). That is, one end of the wire rope 3 is connected to the work vehicle 2 via the chimney top, and the other end is connected to the chimney bottom.

The work vehicle 2 is suspended by a wire rope 3 while positioned on the wall side of the chimney top, and is an example of a crusher that crushes a part of the chimney top. The work vehicle 2 travels on the chimney wall and crushes the chimney top while stopped on the chimney wall. The work vehicle 2 is communicatively connected to a controller that can be operated by an operator, and each part is configured to operate based on an operation signal from the controller.

As shown in Figures 2 and 3, the work vehicle 2 is equipped with a working mechanism 21 that crushes the top of the chimney, a traveling mechanism 22 that is provided below the working mechanism 21 and travels on the wall surface of the chimney, and an inclination adjustment mechanism 23 that is connected to the working mechanism 21 and the traveling mechanism 22 and adjusts the inclination of the working mechanism 21 relative to the traveling mechanism 22. Each part of the work vehicle 2 operates with hydraulic pressure supplied from a hydraulic pump installed in the working mechanism 21, and the hydraulic pump operates with power obtained from the engine.

The working mechanism 21 comprises a main body 21a, an arm 21b supported so as to be rotatable relative to the main body 21a, and an attachment 21c detachably attached to the tip of the arm 21b and capable of crushing the top of the chimney. The main body 21a is an example of a work vehicle body in which a hydraulic pump and an engine are mounted on a frame, and may, for example, comprise a cockpit where an operator can operate each part of the work vehicle 2.

Attachment 21c, for example, is capable of crushing the chimney top and is equipped with a pair of gripping members capable of gripping a pulley. One example of such an attachment 21c is a large cutter. The large cutter may be used not only to crush the chimney top, but also to attach and detach the pulley 4 to the chimney top. If at least one of the pair of crushing arms provided on the large cutter is made of an elastic material, the operator can visually check the deformation state of the crushing arm and understand the amount of force being applied to the object to be gripped.

The traveling mechanism 22 comprises a main frame 22a, a pair of crawlers 22b arranged on both sides of the main frame 22a, and a pair of winches 22c provided on the left and right sides of the main frame 22a. The crawlers 22b, also called caterpillar tracks, comprise a deformable circular belt that contacts the traveling surface, and a number of wheels arranged inside the circular belt and rotating the circular belt. The winch 22c is installed behind the main frame 22a and is configured to wind up and pay out the wire rope 3 while it is connected.

The tilt adjustment mechanism 23 includes a rotation support pin 23a that extends in the left-right direction of the work vehicle 2 and rotatably supports the front end of the main body 21a and the main body frame 22a so that the main body 21a can tilt forward, and a hydraulic cylinder 23b that is rotatably connected to the main body 21a and the main body frame 22a and can push the main body 21a up in a direction away from the main body frame 22a.

The work vehicle 2 has the above-mentioned configuration, so that it can ascend toward the top of the chimney while traveling along the chimney wall by rotating the crawler 22b in the forward direction and winding up each wire rope 3 with each winch 22c. On the other hand, it can descend toward the bottom of the chimney while traveling along the chimney wall by rotating the crawler 22b in the backward direction and letting out each wire rope 3 with each winch 22c.

In addition, since the work vehicle 2 has the above-mentioned configuration, when the crawler 22b is in contact with the chimney wall surface, the hydraulic cylinder 23b is operated to tilt the work mechanism 21 forward relative to the traveling mechanism 22, and the attitude can be adjusted so that the main body 21a of the work mechanism 21 is positioned on a substantially horizontal plane. Therefore, when the work vehicle 2 is stopped near the top of the chimney, the arm 21b can be extended in a substantially horizontal direction, and the attachment 21c can reach the side of the chimney top opposite the side on which the work vehicle 2 is positioned.

Returning to Figure 1, the wire rope 3 is a rope made of twisted steel wires, and is suitable for suspending heavy objects. The wire rope 3 is formed so that it can deform along the circumferential surface of the roller of the pulley 4 when it is hung on the pulley 4.

The pulley 4 is an example of a guide means that is detachably attached to the top of the chimney and guides the wire rope 3 so that it does not come off when it is hung. The pulleys 4 are attached in a line to the edge of the top of the chimney, and the wire rope 3 is hung on each of the pulleys 4. Two pairs of wire ropes 3 and two pairs of pulleys 4 are used to suspend the work vehicle 2. Hereinafter, when it is necessary to distinguish between the two pairs of pulleys 4, the pulleys 4 may be expressed as pulley 4A and pulley 4B. The wire rope 3 hung on pulley 4A may be expressed as wire rope 3A, and the wire rope 3 hung on pulley 4B may be expressed as wire rope 3B.

As an example, in FIG. 4(a), the wire ropes 3A for suspending the work vehicle 2 are hung on two pulleys 4A, and are arranged side by side on the side (near side) of the wall surface of the chimney top where the work vehicle 2 is arranged. The two pulleys 4A are preferably arranged so that the rotation axes of the rollers extending horizontally extend in approximately the same direction. On the other hand, the wire ropes 3B that do not suspend the work vehicle 2 are hung on two pulleys 4B, and are arranged away from the two pulleys 4A so as not to interfere with the suspension of the work vehicle 2. The position and orientation of each pulley 4B are arbitrary as long as they do not overlap the area to be crushed. The area to be crushed is the semicircular area of the chimney top where the four pulleys 4A and 4B are not attached.

The role of each pulley 4A, 4B may be changed by changing the positioning of each pulley 4A, 4B in FIG. 4(a). Specifically, the two pairs of pulleys 4B may be arranged so that the rotation axes of the horizontally extending rollers extend in approximately the same direction, allowing the two pairs of wire ropes 3B to be used to suspend the work vehicle 2. In this case, since the two pairs of wire ropes 3A are not used to suspend the work vehicle 2, each pulley 4A is arranged so as not to overlap the area to be crushed.

As shown in FIG. 4(b), the pulley 4 includes a guide mechanism 41 that guides the wire rope 3 when one wire rope 3 is hung on it, and an attachment mechanism 42 that is connected to the bottom side of the guide mechanism 41 and can be detachably attached to the top of the chimney.

The guide mechanism 41 comprises a C-shaped frame 41a and four rollers 41b rotatably supported by the frame 41a and assembled in a crisscross pattern. One wire rope 3 is inserted into the space surrounded by the four rollers 41b. The mounting mechanism 42 comprises a U-shaped frame 42a and a stopper 42b that sandwiches an object between the frame 42a and the stopper 42b and is supported movably in a direction to press the object against the frame 42a. The frames 41a and 42a are connected rotatably around a rotation axis L that extends in the direction in which they are arranged.

Since the pulley 4 has the above-mentioned configuration, there is no risk of the wire rope 3 falling off while the work vehicle 2 is being suspended. Also, the wire rope 3 can be moved together with the pulley 4 simply by gripping it with the attachment 21c provided on the work vehicle 2. Then, with the mounting mechanism 42 fixed to the chimney top, the guide mechanism 41 can be rotated around the rotation axis L relative to the mounting mechanism 42, thereby appropriately adjusting the orientation of the roller 41b relative to the chimney top.
The above is the configuration of the chimney demolition system 1.

(Chimney dismantling method)
Next, the flow of the chimney dismantling method implemented by the chimney dismantling system 1 according to the embodiment will be described with reference to the flowchart of Fig. 5. In this chimney dismantling method, the chimney is virtually divided into two semicircular regions facing each other in the radial direction, and each semicircular region is dismantled little by little alternately from the top of the chimney to the bottom. Note that the pair of semicircular regions is not necessarily limited to the case where each region has the same shape, and includes the case where each region has a different arc shape.

First, the preparation process for the chimney dismantling is carried out (step S1). The flow of the preparation process is explained below.

(Preparation process)
First, the four pulleys 4 and the auxiliary ropes are transported to the top of the chimney. Specifically, the workers manually transport the four pulleys 4 and the auxiliary ropes to the top of the chimney. The auxiliary ropes are used to pull up the four wire ropes 3 to the top of the chimney.

Next, four pulleys 4 are attached to the edges of the chimney top. As shown in FIG. 4(a), each pulley 4 is attached in a position that does not affect the crushing of the chimney top. Specifically, of the four pulleys 4, two pulleys 4A that will be used to suspend the work vehicle 2 in the next crushing process are arranged side by side so that the rotation axes of the horizontally extending rollers extend in approximately the same direction. In addition, two pulleys 4B that will not be used to suspend the work vehicle 2 in the next crushing process are arranged away from the two pulleys 4A so as not to overlap with the semicircular area to be crushed.

Next, four anchors are driven into the bottom of the chimney, and one end of each of the four wire ropes 3 is connected to each anchor. Next, the other ends of the four wire ropes 3 are connected to one end of the auxiliary rope that has been transported to the top of the chimney, and the four wire ropes 3 are pulled up to the top of the chimney by pulling up the auxiliary rope.

Next, a separate wire rope 3 is hung on each pulley 4 attached to the edge of the chimney top, and each wire rope 3 is lowered from the outside of the chimney toward the ground. This completes the setting of the four wire ropes 3A, 3B and the four pulleys 4A, 4B to the chimney top as shown in Figure 6. Note that in Figure 6, two wire ropes 3B are omitted for ease of understanding. Also, reference numeral 5 in Figure 6 denotes an anchor that connects the wire rope 3 to the ground.
The above is the flow of the preparation process.

Next, a first crushing process is carried out in which one of a pair of opposing semicircular regions of the chimney top is targeted for crushing (step S2). The flow of the first crushing process is explained below.

(First crushing step)
First, as shown in Figure 6, the work vehicle 2 is moved to the side opposite to the side where the chimney top is to be crushed, and the two wire ropes 3A hung on each pulley 4A are connected to winches 22c provided on the left and right sides of the work vehicle 2.

Next, as shown in FIG. 7, the work vehicle 2 is moved to the vicinity of the top of the chimney. In this process, the crawler 22b is rotated in the forward direction, and the wire ropes 3A are wound up by the winches 22c provided on the left and right sides of the work vehicle 2, so that the work vehicle 2 travels upward on the chimney wall surface toward the top of the chimney.

When the work vehicle 2 leaves the ground, the front end of the crawler 22b, which has been in contact with the ground, gradually leaves the ground and comes into contact with the chimney wall surface, and then the rear end of the crawler 22b also leaves the ground and comes into contact with the chimney wall surface. At this time, the hydraulic cylinder 23b of the tilt adjustment mechanism 23 is operated to keep the main body 21a of the working mechanism 21 horizontal, and the working mechanism 21 is tilted so that it gradually falls forward relative to the main body frame 22a of the traveling mechanism 22. Through this operation, the main body 21a of the working mechanism 21 is finally tilted in a direction approximately vertical to the main body frame 22a of the traveling mechanism 22.

Next, as shown in FIG. 8, the arm 21b of the work vehicle 2 is extended to the opposite side of the wall on which the work vehicle 2 is placed, and the attachment 21c is used to crush the semicircular area of the top of the chimney on the opposite side of the wall on which the work vehicle 2 is placed. At this time, the two pulleys 4A and the two pulleys 4B are both in positions that do not affect the crushing, so they do not interfere with the crushing of the semicircular area of the top of the chimney.

Next, the two pulleys 4B that were attached using attachments 21c in positions that do not affect the crushing are removed and attached to the edge of the new chimney top on the crushed side as shown in Figure 9. At this time, each wire rope 3B moves together with each pulley 4B. The two pulleys 4B are arranged side by side so that the rotation axes of the horizontally extending rollers extend in approximately the same direction, in order to be used to suspend the work vehicle 2 in the next crushing process.

Next, the work vehicle 2 is returned to the ground, and the wire ropes 3A attached to each winch 22c are removed. In the process of returning the work vehicle 2 to the ground, when the work vehicle 2 is lowered to the ground, the crawler 22b is rotated in the backward direction, and the wire ropes 3A are let out from the winches 22c provided on the left and right sides of the work vehicle 2.
The above is the flow of the first crushing step.

Returning to FIG. 5, a second crushing process is carried out (step S3) in which the other of the pair of opposing semicircular regions on the chimney top is targeted for crushing. The flow of the second crushing process is explained below.

(Second crushing step)
First, the work vehicle 2 is moved to the side where the crushing was performed in the first crushing process, and the two wire ropes 3B hung on the pulley 4B are connected to winches 22c provided on the left and right sides of the work vehicle 2.

Next, as shown in FIG. 10, the work vehicle 2 is moved to the vicinity of the top of the chimney. In this process, the crawler 22b is rotated in the forward direction, and the wire rope 3B is wound up by each winch 22c of the work vehicle 2, causing the work vehicle 2 to travel upward on the chimney wall surface.

Next, the arm 21b of the work vehicle 2 is extended to the side opposite the wall surface on which the work vehicle 2 is placed, and the two pulleys 4A attached to the portion to be crushed are removed using the attachment 21c. Then, as shown in FIG. 11, they are attached to the edge of the new chimney top obtained by crushing in the first crushing process, which does not affect the crushing. At this time, each wire rope 3A also moves together with each pulley 4A. The two pulleys 4A are positioned away from the two pulleys 4B so as not to overlap with the semicircular area to be crushed, as they will not be used to suspend the work vehicle 2 in the next crushing process.

Next, as shown in FIG. 12, the attachment 21c is used to crush the semicircular area of the chimney top on the opposite side of the wall where the work vehicle 2 is positioned. At this time, the two pulleys 4A and the two pulleys 4B are both in positions that do not affect the crushing, so they do not impede the crushing of the semicircular area of the chimney top. When this process is completed, the remaining semicircular area of the chimney top is also crushed, and the height of the entire circumference of the edge of the chimney top is reduced.

Next, the two pulleys 4A that were attached using attachments 21c in positions that do not affect the crushing are removed, and as shown in Figure 13, the two removed pulleys 4A are attached to the edge of the new chimney top on the crushed side. At this time, each wire rope 3A also moves together with each pulley 4A. The two pulleys 4A are arranged side by side so that the rotation axes of the horizontally extending rollers extend in approximately the same direction, in order to be used to suspend the work vehicle 2 in the next crushing process.

Next, the work vehicle 2 is lowered to the ground, and the wire rope 3B attached to the winch 22c is removed.
The above is the flow of the second crushing step.

Returning to Fig. 5, after the process of step S3 is performed, it is judged whether the chimney top has reached a crushable height on the ground (step S4). If it can be judged that the chimney top has reached a crushable height on the ground (step S4; Yes), a ground crushing process is performed to crush the remaining part of the chimney on the ground (step S5), and all the processes are completed. On the other hand, if it can be judged that the chimney top has not reached a crushable height on the ground (step S4; No), the process returns to step S2 and the chimney height is further lowered.
The above is the procedure for dismantling a chimney.

As described above, the chimney demolition system 1 according to the embodiment includes a work vehicle 2 that is installed on the wall surface of the chimney top and crushes the area of the wall surface of the chimney top that is radially opposite to the side on which it is installed, a wire rope 3 that is connected to the work vehicle 2 and the ground inside the chimney and suspends the work vehicle 2 from the chimney top, and a pulley 4 that is detachably attached to the chimney top and to which the wire rope 3 is hung. This makes it possible to omit time-consuming and labor-intensive tasks such as assembling and dismantling temporary scaffolding, and allows for easy demolition of the chimney.

The present invention is not limited to the above embodiment, and the following modifications are also possible.

(Modification)
In the above embodiment, the vehicle 2 is suspended by two wire ropes 3, but the present invention is not limited to this. For example, the vehicle 2 may be suspended by three or more wire ropes 3. In this case, a number of winches 22c corresponding to the number of wire ropes 3 may be installed on the main body frame 22a of the vehicle 2.

In the above embodiment, a large breaker was used as the attachment 21c, but the present invention is not limited to this. For example, the large breaker may be replaced with a breaker and concrete may be broken down by applying vibrations to it.

In the above embodiment, the attachment 21c is detachably attached to the arm 21b, but the present invention is not limited to this. The attachment 21c may be attached so as not to be detachable from the arm 21b.

In the above embodiment, the work vehicle 2 is suspended from the top of the chimney by the wire rope 3, but the present invention is not limited to this. For example, if the chimney strength is low, the work vehicle 2 may be provided with a mechanism for clinging to the chimney wall. The mechanism for clinging to the chimney wall may be formed to match the curvature of the chimney wall, and a pair of openable and closable gripping arms may be provided rotatably relative to the traveling mechanism 22, so that the pair of gripping arms grip the chimney wall from both sides.

In the above embodiment, the work vehicle 2 is used as the crusher, but the present invention is not limited to this. A crusher other than the work vehicle 2, for example a crusher that does not have running capabilities, may be suspended from the top of the chimney to carry out the crushing operation.

In the above embodiment, a pair of winches 22c are provided side by side on the travel mechanism 22 of the work vehicle 2, but the present invention is not limited to this. For example, a pair of winches may be provided side by side on the main frame 22a of the work mechanism 21.

In the above embodiment, the winch 22c is provided on the work vehicle 2, but the present invention is not limited to this. For example, a winch may be fixed to the ground inside the chimney, and the wire rope 3 may be wound up by the winch fixed to the ground.

In the above embodiment, the inclination of the working mechanism 21 relative to the traveling mechanism 22 can be adjusted, but the present invention is not limited to this. The two may be fixed so that the bottom surface of the main body 21a of the working mechanism 21 extends in a substantially vertical direction relative to the main body frame 22a of the traveling mechanism 22.

In the above embodiment, a wire rope 3 is used as the rope, but the present invention is not limited to this. For example, a fiber rope made by twisting together at least one of natural fibers and synthetic fibers may be used.

In the above embodiment, the pulley 4 is used as the guide means, but the present invention is not limited to this. For example, a guide means may be used in which the guide mechanism 41 of the pulley 4 is replaced with a U-shaped member having a U-shaped cross section and movably housing the wire rope 3 inside.

In the above embodiment, the pulley 4 has four rollers arranged in a crisscross pattern, but the present invention is not limited to this. For example, a pulley may be used in which one roller is rotatably supported by a U-shaped support member, and the wire rope 3 is inserted between the roller and the U-shaped support member.

In the above embodiment, the chimney top is virtually divided into semicircular regions, and each region is crushed alternately, but the present invention is not limited to this. It is not necessary to virtually divide the chimney top into semicircular regions, and for example, the chimney top may be virtually divided into three or four arc-shaped regions. In this case, the number of wire ropes 3 and pulleys 4 can be increased or decreased depending on the number of virtually divided chimney tops.

In the above embodiment, the work vehicle 2 is placed on the outside of the chimney and the anchor 5 is driven into the bottom of the inside of the chimney, but the present invention is not limited to this. For example, depending on the size of the chimney, the work vehicle 2 may be placed on the inside of the chimney and the anchor 5 may be driven into the bottom of the outside of the chimney. Also, if the wire rope 3 can be stably hung by the pulley 4, the work vehicle 2 may be placed on the outside of the chimney and the anchor 5 may be driven into the bottom of the outside of the chimney, or the work vehicle 2 may be placed on the inside of the chimney and the anchor 5 may be driven into the bottom of the inside of the chimney.

The above embodiments are examples, and the present invention is not limited to these, and various embodiments are possible without departing from the spirit of the invention described in the claims. The components described in the embodiments and variations can be freely combined. Furthermore, inventions equivalent to the inventions described in the claims are also included in the present invention.

Reference Signs List 1 Chimney demolition system 2 Work vehicle 21a Body 21b Arm 21c Attachment 22 Travel mechanism 22c Winch 23 Tilt adjustment mechanism 3, 3A, 3B Wire rope 4, 4A, 4B Pulley 41 Guide mechanism 42 Mounting mechanism 5 Anchor

Claims (6)

A crusher is installed on a wall surface of the chimney top and crushes an area of the wall surface of the chimney top that is radially opposite to the side where the crusher is installed;
a rope having one end connected to the crusher and the other end connected to the ground via the chimney top, for suspending the crusher from the chimney top;
A guide means is detachably attached to the top of the chimney and guides the rope so that it does not come off when the rope is hung on the top of the chimney.
A chimney demolition system equipped with: The crusher includes a main body, an arm rotatably supported by the main body, an attachment provided at a tip of the arm for crushing the chimney top, and a winch supported by the main body and capable of winding up the rope with the rope connected thereto.
The chimney demolition system according to claim 1. The attachment is configured to be able to grip the guide means,
The guide means includes a guide mechanism for guiding the rope in and out while the rope is hung, and a mounting mechanism connected to the guide mechanism and removably attached to the chimney top.
The chimney demolition system according to claim 2. The crusher includes a traveling mechanism supported by the main body and traveling on the wall surface of the chimney in the longitudinal direction of the chimney.
The chimney demolition system according to claim 2 or 3. The chimney demolition system includes four ropes and four guide means detachably attached to the top of the chimney and through which the ropes are hung;
The crusher includes two winches provided on the traveling mechanism and arranged on the left and right sides of the traveling mechanism,
Two adjacent ropes among the four ropes are detachably connected to each winch.
The chimney demolition system according to claim 4. A chimney dismantling method for virtually dividing a chimney into two semicircular regions facing each other, and dismantling each of the semicircular regions alternately from the top to the bottom of the chimney,
A step of installing a crusher on one semicircular area side of the chimney top;
A first crushing step of crushing the other semicircular region of the chimney top by the crusher;
Installing the crusher on the other semicircular region side of the chimney top;
A second crushing step of crushing one semicircular region of the chimney top by the crusher;
A method for dismantling a chimney, including:

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