JP2006283473A - Disassembling system and disassembling method of tower structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a disassembling system of a tower structure for efficiently performing disassembling work, without arranging a duct connected to a dust collector in a high position, without scattering dust generated in crushing to the periphery. <P>SOLUTION: This disassembling system of the tower structure is used when demolishing, for example, a chimney 10 as the tower structure by crushing the chimney downward from an upper end part while absorbing the generated dust by a dust collecting means 15. The dust collecting means 15 is composed of the dust collector 14 adjacently arranged to the chimney 10, and a suction duct 19 having one end part connected to the dust collector 14, extended upward by being introduced inside the chimney 10 via a duct hole 17 penetratingly formed in a height position h1 in the approximation to the ground surface 16 around the chimney 10 and arranging the other end part having a dust sucking-in part 18 in a corresponding height position h2. Disassembling work is performed while dropping crushed chips 13 of the chimney 10 crushed by a crusher 12 arranged in an upper end part of the chimney 10 inside a lower part of the chimney 10. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a dismantling system and a disassembling method for a tower-like structure, and in particular, a hollow cylindrical tower-like structure represented by a chimney is directed downward from the upper end while absorbing generated dust by a dust collecting means. The present invention relates to a tower structure dismantling system and a disassembling method used when dismantling by crushing.

  In recent years, for example, work to remove an aging garbage incinerator has been actively carried out, and along with this, work to dismantle a chimney that is a hollow cylindrical tower-like structure with a high height occurs. The chimney is made of reinforced concrete, bricks, etc. Especially when it becomes a large one with a diameter of about 3-10m and a height of about 30-200m, it cannot be simply laid down and disassembled, and consideration for the surrounding environment Since it is necessary, for example, the crushing device is lifted using a heavy lifting machine such as a crane and installed at the upper end of the chimney, while crushing debris is dropped into the chimney and crushing sequentially from the upper end to the lower side A method of dismantling the chimney is adopted.

In addition, when a hollow cylindrical tower structure such as a chimney made of reinforced concrete or brick is crushed and dismantled, there is a problem that the generated dust or dioxins contained in it may contaminate the surrounding environment. For example, as shown in FIG. 4, a duct 52 is attached to a dust suction port 51 formed so as to penetrate the lower side surface of the tower-like structure 50, and the duct 52 is connected to a dust collector 53. By operating the dust collector 53, the air in the tower is sucked to generate an air flow from the outside of the tower through the upper end opening of the tower-like structure 50 to the inside of the tower, and the generated air flow. A technique is also disclosed in which dust generated by being placed is drawn into the tower and accumulated in the dust collector 53 (see, for example, Patent Document 1).
JP 2000-345721 A

  According to the dismantling method of the hollow tower structure described in Patent Document 1, dust is scattered around by generating an air flow from outside the tower through the upper end opening of the tower structure 50 toward the inside of the tower. Therefore, it is possible to effectively accumulate in the dust collecting device 53 without causing it to occur. On the other hand, the duct 52 connected to the dust collector 53 is attached to the dust suction port 51 formed at a position slightly higher than the root at the lower part of the tower-like structure 50, so that the tower-like structure 50 is disassembled. As the process proceeds, the dust suction port 51 is blocked by the crushing dust 54 accumulating in the lower part. When the dust suction port 51 is blocked by the accumulated crushed debris 54, the dismantling operation is interrupted each time, and the crushed debris 54 is unloaded from, for example, a discharge opening 55 formed on the lower side surface of the tower-like structure 50. Thereafter, the tower-like structure 50 is crushed from the upper end until the dust suction port 51 is closed again. Since the dismantling method of the hollow tower structure of Patent Document 1 needs to repeat the operation of crushing such a tower structure 50 and the operation of carrying out the crushing waste 54 many times, the work efficiency is inferior. There was a need to improve this.

  On the other hand, the dust suction port 51 is formed at a high position on the side surface of the tower-like structure 50 and the duct 52 is attached. Although it may be increased, the duct 52 attached to the dust suction port 51 is exposed at a high position outside the tower-like structure 50, and for example, the crushed debris 54 has fallen down on the outside of the tower-like structure 50. At this time, the shredded waste 54 may fly to a place away from the tower-like structure 50 and may affect the surrounding environment by jumping on the duct 52 exposed at a high position.

  The present invention has been made paying attention to such a conventional problem, and does not scatter dust generated during crushing to the surroundings, and the duct connected to the dust collector is located at a high position outside the tower structure. It is an object of the present invention to provide a tower-like structure dismantling system and a tower-like structure dismantling method that can efficiently perform the dismantling work by reducing the number of times the dismantling work is interrupted.

  The present invention relates to a tower-like structure dismantling system used for dismantling a hollow cylindrical tower-like structure by crushing it downward from the upper end while absorbing the generated dust by the dust collecting means. The dust collecting means includes a dust collector provided adjacent to the tower-like structure, one end connected to the dust collector, and a ground surface around the tower-like structure. It is introduced into the tower-like structure through a duct hole penetratingly formed at an adjacent height and extends upward, and the other end provided with a dust suction part is installed at a considerable height. A tower-like structure that comprises a suction duct and that dismantles the tower-like structure crushed scraps by a crushing device provided at the upper end of the tower-like structure, while dropping it into the lower part of the tower-like structure. Achieved the above objectives by providing a structure dismantling system A.

  And according to the dismantling system of the tower-like structure of the present invention, the height position close to the ground surface where the duct hole is formed is included in a height region of 15 to 20 m from the ground surface, It is preferable that the considerable height position where the other end of the suction duct is provided is included in a height region of 0.5 to 1 m from the ground surface.

  According to the tower structure dismantling system of the present invention, the substantial height position where the other end portion of the suction duct is provided is the internal volume of the tower structure in the lower part than the height position. However, it is preferable that the height position is set so as to be substantially equal to the total volume in consideration of the dandruff rate of the crushing waste generated from the tower-like structure in the upper part of the height position.

  Further, according to the tower-like structure dismantling system of the present invention, it is preferable that the suction duct extends vertically upward along the inner wall surface of the tower-like structure.

  Still further, according to the tower-like structure dismantling system of the present invention, the upper end of the other end portion of the suction duct provided with the dust suction portion is covered with an obliquely inclined protective roof. preferable.

  Further, the present invention provides a dismantling system for a tower-like structure according to any one of the above, and after disassembling the tower-like structure up to a height position of the other end of the suction duct, The crushing debris accumulated inside is removed from the side of the tower-like structure, the crushing device provided at the upper end of the tower-like structure and the suction duct extending inside the tower-like structure are removed, and then the ground is removed. The object is achieved by providing a method for dismantling the tower-like structure in which the remaining part of the tower-like structure is dismantled by a crushing device installed on the surface.

  According to the tower-like structure dismantling system or tower-like structure dismantling method of the present invention, the dust generated during crushing is not scattered around and the duct connected to the dust collector is disposed outside the tower-like structure. Without disposing at a high position, it is possible to efficiently perform the dismantling work by reducing the number of times the dismantling work is interrupted.

  As shown in FIG. 1, a tower-like structure dismantling system according to a preferred embodiment of the present invention includes, as a hollow cylindrical tower-like structure, for example, a chimney 10 provided in an aged garbage incineration plant, For example, the crushing device 12 lifted by using a lifting heavy machine 11 such as a crane is installed at the upper end of the chimney 10, and the crushing waste 13 is dropped into the chimney 10 using the installed crushing device 12, while the upper end portion Adopted to enable efficient demolition work while collecting dust collected by the dust collector 14 when crushing the chimney 10 sequentially from the bottom to the bottom. It has been done.

  Here, the crushing device 12 is a known device disclosed in, for example, Japanese Patent Laid-Open No. 2000-345721, and for example, as shown in FIG. 2, an oil tank, an engine, a hydraulic pump, A generator, a radio control device, and the like are provided, and a substantially L-shaped fixed crushing arm 12e is attached using a hydraulic cylinder 12c and a link 12d with a turning frame 12b interposed below the base 12a. A movable crushing arm 12f that contacts and separates from the fixed crushing arm 12e is pivotally supported by a rotating shaft 12g and is rotatably attached to the fixed crushing arm 12e. Further, the upper end portion of the fixed crushing arm 12e and the central portion of the movable crushing arm 12f are connected by a hydraulic cylinder 12h, and the distal end portion of the fixed crushing arm 12e and the front end of the movable crushing arm 12f are expanded and contracted by the hydraulic cylinder h. The upper part of the chimney 10 is sandwiched between the parts as a part to be crushed and crushed, and the crushed debris 13 after the crushing is guided to the inside of the chimney 10 where the movable crushing arm 12 is arranged, and below the chimney 10 It can be dropped inside. The fixed crushing arm 12e and the movable crushing arm 12f are provided with a fixed blade and a movable blade for cutting a reinforcing bar.

  The tower-like structure dismantling system of this embodiment crushes the chimney 10 as a hollow cylindrical tower-like structure downward from the upper end while absorbing the generated dust with the dust collecting means 15. As shown in FIG. 3, the dust collecting means 15 includes a dust collecting device 14 provided adjacent to the chimney 10, and one end of the dust collecting device 14. The dust suction part 18 is connected to the inside of the chimney 10 through a duct hole 17 penetratingly formed at a height position h1 close to the ground surface 16 around the chimney 10 so as to extend upward. The other end provided is composed of a suction duct 19 installed at a considerable height position h2, and the debris 13 of the chimney 10 crushed by the crushing device 12 provided at the upper end of the chimney 10 Dismantling work while dropping .

  According to this embodiment, the chimney 10 to be dismantled is a large chimney 10 having a diameter of about 3 to 10 m and a height of about 30 to 200 m, for example, and provided as a reinforced concrete structure in which an inner layer is formed of bricks. It has been.

Further, as the dust collector 14 constituting the dust collector 15, for example, various publicly known devices known as dust collectors for civil engineering and construction work can be used, and preferably the trade name “turbo filter”, model / The format SJF900-44 / 20 can be used. The dust collector 14 is equipped with, for example, a filter that can be replaced by a cartridge system, a fan that is rotationally driven by a motor, and the like. The fan is rotationally driven so that the inside of the chimney 10 is disposed via the suction duct 19. Air is taken into the interior, dust contained in the taken-in air is filtered by a filter, and the purified air after filtration is exhausted out of the device 14 through the exhaust port. According to this embodiment, the processing air volume of the dust collector 15 is, for example, 1000 m ³ / min. Moreover, it becomes possible to remove toxic substances, such as dioxin, effectively by interposing activated carbon in the filter.

  The suction duct 19 constituting the dust collecting means 15 is a cylindrical tube made of, for example, a steel tube and having an inner diameter of about 400 to 1000 mm, and is installed on the ground surface 16 adjacent to the chimney 10. One end is connected to the dust collector 15. In addition, the suction duct 19 extends toward the chimney 10 along the ground surface 16, and then penetrates the side surface of the chimney 10 at a height position h 1 close to the ground surface 16. For example, the diameter is about 500 to 1000 mm. It is inserted into the duct hole 17 having a size of 1 mm and introduced into the chimney 10.

  Here, the height position h1 close to the ground surface 16 where the duct hole 17 is formed in the chimney 10 is preferably, for example, the center of the duct hole 17 included in a height region of 0.5 to 1 m from the ground surface 16. Is in position. By forming the duct hole 17 at a height region of 0.5 to 1 m from the ground surface 16, the duct hole 17 can be formed by using a vent provided in a lower part of a normal chimney. In addition, the suction duct 19 can be extended to the chimney 10 at a low height while being along the ground surface 16, so that it is not necessary to expose the suction duct 19 to a high position outside the chimney 10. It is also easy to cover 19 with the covering soil 20 and cover it.

  Further, the suction duct 19 introduced into the chimney 10 through the duct hole 17 preferably extends vertically upward along the inner wall surface of the chimney 10, and is firmly and securely attached to the inner wall surface via the fixing bracket 21. The other end provided with the dust suction part 18 made of, for example, a strainer is installed at a considerable height position h 2 in the chimney 10 while being attached in a stable state.

  Here, the substantial height position h2 at which the other end portion of the suction duct 19 is provided is, for example, a position where the upper end by the dust suction portion 18 is preferably included in a height region of 15 to 20 m from the ground surface 16. Yes. By forming the duct hole 17 at a height region of 15 to 20 m from the ground surface 16, it becomes possible to accumulate the crushed debris 13 to the height of the dust suction portion 18, interrupting the pulverization operation and crushed debris 13. By reducing the number of times of carrying out, it is possible to improve the work efficiency of the dismantling work.

  Further, according to the present embodiment, the substantial height position h2 at which the other end of the suction duct 19 is provided has an internal volume in the chimney 10 at a lower portion than the height position h2 and the height position h2. It is particularly preferable that the height h2 is set so as to be substantially equal to the total volume of the crushed debris 13 generated from the chimney 10 in the upper part in view of the dandruff rate. Such a height position can be easily obtained by calculation in view of the inner diameter, thickness, height, and the like of the chimney 10. By providing the other end of the suction duct 19 at such a height position h2, the suction duct 19 is provided at the other end of the suction duct 19 until all of the chimney 10 above the height position h2 is crushed. The dust suction part 18 is not buried or clogged with the crushed debris 13 that is accumulated, and the number of times the crushed debris 13 accumulated from the lower part of the chimney 10 is removed can be reduced, so that the dismantling work can be performed more efficiently. To.

  In particular, the considerable height position h2 where the other end portion of the suction duct 19 is provided uses a crushing heavy machine equipped with, for example, a sky arm with a nibler attached as a crushing device installed on the ground surface 16 around the chimney 10. Therefore, the height reaches directly from the crushing heavy machine. Thus, after the dismantling operation of the chimney 10 is performed without interruption by the crushing device 12 provided at the upper end of the chimney 10 up to the height position of the other end of the suction duct 19, from the side surface of the lower part of the chimney 10. By removing the crushing debris 13 accumulated inside, removing the crushing device 12 and the suction duct 19 inside the chimney 10, and then dismantling the remaining part of the chimney 10 by a crushing heavy machine installed on the ground surface 16, The work of removing the crushing waste 13 accumulated from the lower part of the chimney 10 can be completed at once, and the work efficiency can be further improved.

  Furthermore, according to the present embodiment, the upper end of the other end portion provided with the dust suction portion 18 of the suction duct 19 introduced into the chimney 10 and extending vertically upward along the inner wall surface of the chimney 10 is The upper part is covered by a protective roof 22 that is inclined obliquely. The protective roof 22 is made of, for example, an iron plate or the like, and it is effective that the crushed debris 13 whose upper end of the chimney 10 is crushed and falls to the lower inside directly collides with the dust suction part 18 to break the dust suction part 18. Since the upper surface is inclined, the shredder 13 can be smoothly dropped downward without being retained. Further, the suction duct 19 introduced into the chimney 10 is brought close to the inner wall surface and extended upward along the inner wall surface, thereby reducing the collision with the falling crushed debris 13 and the suction duct. It becomes possible to prevent 19 from interfering with depositing the crushing waste 13.

  According to the tower-like structure dismantling system of the present embodiment having the above-described configuration, the chimney 10 crushed by the crushing device 12 provided at the upper end of the chimney 10 while absorbing the generated dust by the dust collecting means 15. The demolition work is performed while dropping the crushed debris 13 into the lower part of the chimney 10, and when the crushed debris 13 accumulates in the chimney 10 to the vicinity of the dust suction part 18, the discharge opening 23 is appropriately formed on the lower side surface of the chimney 10. The cycle of carrying out the crushing waste 13 to the outside and continuing the crushing operation of the upper end by the crushing device 12 is repeated as necessary.

  Further, when the crushing of the chimney 10 has proceeded to the vicinity of the dust suction part 18, the crushing debris 13 accumulated inside is carried out from the carry-out opening 23, and then the suction duct 19 extending inside the chimney 10 is removed, For example, while the dust is sucked by the suction duct 19 left outside the chimney 10, the remaining portion is disassembled by the crushing device 12 provided at the upper end of the chimney 10 or by the crushing heavy machine installed on the ground surface 16.

  And according to the dismantling system of the tower-like structure of this embodiment, the suction duct 19 connected to the dust collector 12 is provided at a high position outside the chimney 10 without scattering dust generated during crushing to the surroundings. Therefore, it is possible to efficiently perform the dismantling work by reducing the number of times the dismantling work is interrupted. That is, according to the present embodiment, the other end portion of the suction duct 19 including the dust suction portion 18 is installed at a considerable height position h2, so that more crushed debris 13 can be accumulated in the chimney 10. Thus, it is possible to improve the work efficiency by interrupting the crushing operation and reducing the number of times the crushing waste 13 is carried out from the carry-out opening 23. Further, a duct hole 17 into which the suction duct 19 is introduced is provided at a height position h1 close to the ground surface 16, and the suction duct 19 is provided at a low position near the ground surface 16 outside the chimney 10. Therefore, for example, even when the crushed debris 13 spills out of the chimney 10, it is possible to effectively avoid the crushed debris 13 from splashing to the place where it hits the suction duct 19. Further, the dust collecting means 15 comprising the dust collecting device 12 and the suction duct 19 can smoothly remove dust generated during crushing, and the dust suction part 18 is provided at a high position in the chimney 10, so that the chimney The dust generated by the crushing operation at the upper end of 10 can be strongly sucked at a closer position.

  The present invention is not limited to the above-described embodiment, and various modifications can be made. For example, a suction duct introduced into the inside of a tower structure such as a chimney does not necessarily need to extend vertically upward along the inner wall surface of the tower structure. It is not always necessary to provide an obliquely inclined protective roof that covers the upper end of the other end provided. Moreover, this invention is not limited to the case where a chimney provided in a garbage incineration plant is dismantled, but can also be employed when dismantling and removing other various hollow cylindrical tower-like structures.

It is explanatory drawing which shows the condition which disassembles a chimney by the dismantling system of the tower-shaped structure which concerns on preferable one Embodiment of this invention. It is a front view explaining the structure of a crushing apparatus. It is a fragmentary sectional view explaining the structure of the dismantling system of the tower-like structure which concerns on preferable one Embodiment of this invention. It is explanatory drawing which shows the condition which disassembles a tower-like structure by the conventional dismantling method.

Explanation of symbols

10 Chimney (tower structure)
DESCRIPTION OF SYMBOLS 11 Lifting heavy machine 12 Crushing device 13 Crushing waste 14 Dust collector 15 Dust collecting means 16 Ground surface 17 Duct hole 18 Dust suction part 19 Suction duct 20 Cover soil 21 Fixing bracket 22 Protective roof 23 Unloading opening h1 A duct hole is formed Height position close to the ground surface h2 Height position close to the ground surface where duct holes are provided

Claims (6)

A tower-like structure dismantling system used when dismantling a hollow cylindrical tower-shaped structure by crushing downward from the upper end while absorbing the generated dust with the dust collecting means,
The dust collecting means includes a dust collector provided adjacent to the tower-like structure, a height of one end connected to the dust collector, and a height close to the ground surface around the tower-like structure. A suction duct that is introduced into the inside of the tower-like structure through a duct hole penetratingly formed at a position and extends upward, and the other end provided with a dust suction part is installed at a considerable height position. Become
A tower-like structure dismantling system that performs a dismantling operation while dropping the crushing waste of the tower-like structure crushed by a crushing device provided at the upper end of the tower-like structure into the lower part of the tower-like structure. The height position close to the ground surface where the duct hole is formed is included in a height region of 15 to 20 m from the ground surface, and the corresponding height position where the other end of the suction duct is provided is The dismantling system for a tower structure according to claim 1, which is included in a height region of 0.5 to 1 m from the ground surface.   The substantial height position at which the other end of the suction duct is provided is such that the internal volume of the tower-like structure in the lower part from the height position is the tower-like structure in the upper part from the height position. The tower-like structure dismantling system according to claim 1, wherein the dismantling system is a height position set to be substantially equal to a total volume in consideration of a dandruff rate.   The tower structure dismantling system according to any one of claims 1 to 3, wherein the suction duct extends vertically upward along an inner wall surface of the tower structure.   The tower-like structure dismantling system according to any one of claims 1 to 4, wherein an upper end of the other end portion of the suction duct having the dust suction portion is covered with a diagonally inclined protective roof. After disassembling the tower-like structure up to the height of the other end of the suction duct, the tower-like structure dismantling system according to any one of claims 1 to 5, While removing the crushing debris accumulated inside from the side, the crushing device provided at the upper end of the tower-like structure and the suction duct extending inside the tower-like structure are removed, and then the ground surface A dismantling method for a tower-like structure in which the remaining part of the tower-like structure is dismantled by a crushing device installed in the tower.

Images