JP3858070B2 - Temporary structure for incinerator dismantling - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a small and medium-sized incinerator, and relates to a temporary structure used for dismantling these incinerators.
[0002]
[Background]
As is well known, there are many small and medium-sized incinerators that have been used for waste treatment in the past. Inside these small and medium-sized incinerators are dioxins, mercury, cadmium, lead, second Chromium, arsenic, and selenium remain, so if you dismantle on the ground, these environmental pollutants are scattered around and pollute the surrounding environment.
[0003]
For this reason, when disassembling a small and medium-sized incinerator that cannot be left unattended, it is necessary to perform the dismantling work by placing the incinerator in a temporary structure that can be isolated from the surrounding environment. Is constructed using a rigid material such as a scaffolding pipe to form a temporary structure, and the dismantling process is performed inside the temporary structure.
That is, a conventional temporary structure for dismantling is composed of a rigid structure of a pipe for scaffolding and an airtight sheet that covers the entire structure, and is maintained at a negative pressure by an exhaust fan in which an internal space is additionally provided and scattered inside. Dust and environmental pollutants are collected and removed.
[0004]
[Problems to be solved by the invention]
Therefore, since such a conventional temporary structure is constructed each time according to the size of the furnace body at the site of the incinerator to be demolished, a considerable time is required for construction and removal, and the construction period becomes long.
In addition, a temporary structure that matches the work site has a high labor cost for construction and removal, and there is a problem in terms of work safety.
[0005]
The object of the present invention is adjusted according to the size of the furnace body to be dismantled in view of the current state of the temporary structure for dismantling of conventional incinerators as described above and the large number of incinerators to be dismantled. It is possible to obtain a temporary structure for dismantling an incinerator that can be assembled and removed quickly and easily.
[0006]
[Means for Solving the Problems]
According to the present invention, the object includes a rigid structure that surrounds the incinerator furnace body to be disassembled separately and an airtight sheet that covers the entire structure, and collects and exhausts dust in the internal space. In the temporary structure for incinerator dismantling, the temporary structure that surrounds the periphery of the incinerator furnace body, and a canopy frame that is placed on top of the temporary structure body and closes the upper side of the incinerator furnace body, the temporary structure, Numerous struts installed at intervals, stretchable pantograph members that can be attached to the brackets of these struts at both ends, and walls that connect the adjacent struts horizontally to maintain the spacing between the struts A temporary structure for dismantling an incinerator having a bracelet, the canopy frame having parallel elongated beam members fixed at both ends to the temporary structure and a plurality of reinforcing bars connecting the beam members. Achieved by .
[0007]
In the description of the preferred embodiments of the invention described below,
1) The strut can be connected in a vertically continuous state so as to correspond to the height of the incinerator furnace body,
2) The beam member of the canopy frame includes a plurality of short hollow members and a joint member inserted and connected to the hollow members, and the reinforcing bar is fixed to the beam member through the joint members. Structure,
3) A structure is described in which a telescopic cylinder communicating with the interior space is provided at the upper part of the temporary structure, and the entire chimney extending from the incinerator furnace body is located inside the telescopic cylinder.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the details of the embodiments of the present invention will be described with reference to the drawings.
1 and 2 show an incinerator A to be dismantled, a temporary structure 10 installed in a state surrounding the incinerator A, and an entire crane 40 used for dismantling.
[0009]
Four sides of the furnace body A2 of the incinerator A to be dismantled are surrounded by a temporary structure 10A constituting the temporary structure 10, and a canopy frame 10B constituting the ceiling of the temporary structure 10 is placed on the temporary structure 10A. The internal space of the temporary structure 10 is sealed from the external environment space by the airtight sheets 51, 52, 53 covering the outer surface of the temporary structure 10A and the upper surface of the canopy frame 10B.
[0010]
That is, as shown in FIG. 3, the temporary structure 10A shown in the figure has a plurality of vertical columns 11 installed at intervals and a pantograph member 12 having both ends attached to joint brackets 11a of these columns 11. Have
That is, since the pantograph member 12 can freely expand and contract in the horizontal direction, the interval between the support columns 11 can be set by adjusting the pantograph member 12, but the interval between the adjacent support columns 11 extends in the horizontal direction above and below the support column 11. Maintained by the wall brace 13.
[0011]
In the case of the illustrated embodiment, in order to correspond to the height of the furnace body A2, as shown in FIG. 3, the two support columns 11 are connected up and down by the joint tube 11b. Can be determined according to body size.
As shown in FIG. 4, auxiliary struts 15 are provided at positions corresponding to the cruciform canopy frame 10 </ b> B made of a rigid ramen structure so that the distance from the struts 11 is maintained by the spacing braces 14.
[0012]
An auxiliary pantograph member 12A similar to the pantograph member 12 is also disposed between these auxiliary struts 15, but a high rigidity is provided by a diagonal brace 16 that spans between the auxiliary struts 15 facing the auxiliary struts 15. As shown in FIG. 2, each end of the canopy frame 10B is received by these ramen structures.
[0013]
7 to 9 show details of the canopy frame 10B having a ramen structure, and the canopy frame 10B is assembled on the basis of a pair of parallel beam members 21. FIG. That is, these beam members 21 are made to have a required length by bolting a joint member 22 inserted into a short hollow member 21A. Similarly, a plurality of reinforcing bars 23 are bolted to these joint members 22. Stopped.
In addition, the frame-like portion defined by the plurality of reinforcing bars 23 and the beam members 21 is reinforced by bracing braces 24 spanned between the hollow members 21A, thereby forming a rigid ramen structure on site.
[0014]
As shown in FIG. 8, a rigid L-shaped joint plate 25 is fixed with a bolt between the upper end of the column 11 of the temporary structure 10A and the end of the canopy frame 10B, and the temporary structure 10A and the canopy frame 10B. Is prevented from being inadvertently disassembled by strong winds.
[0015]
Further, four exhaust fans 60 and a dust collector 70 are installed on four sides of the temporary structure 10, and the internal space of the temporary structure 10 is kept below atmospheric pressure by the exhaust fan 60, and dust in the internal space And environmental pollutants are removed by a filter in the dust collector 70. Of course, although illustration is omitted, in order to prevent the loss of environmental pollutants and the like to the surrounding environment, a waterproof sheet covering the ground surface in the temporary structure 10 is disposed, and purification treatment of the washing water received by the waterproof sheet is performed. Will do.
[0016]
A reinforcing bar 23 is omitted from the intersection central portion 21 of the canopy frame 10B described above, and the chimney A1 of the incinerator A protrudes out of the temporary structure 10 through the space of the intersection central portion 21. A cylindrical enclosure that can accommodate the entire chimney A1 is installed on 21.
[0017]
In the case of the illustrated embodiment, the telescopic cylinder 30 used as a cylindrical enclosure connects a pair of rigid rings 31 and 32 having a diameter of approximately 3 to 5 times the outer diameter of the chimney A1 and the rigid rings 31 and 32. It consists of the cylindrical flexible sheet 33 (flexible material), and the flexible sheet 33 can be folded in a bellows shape.
[0018]
The illustrated expansion and contraction cylinder 30 constituting the cylindrical enclosure is obtained by connecting two flexible sheets 33 having rigid rings 31 and 32 at both ends. The number of these used is the chimney A1 of the incinerator A to be dismantled. Can be selected according to the height of
The uppermost rigid rings 31 and 32 of the telescopic cylinder 30 are suspended by a hanging metal fitting 60 suspended from the first hook 41 of the crane 40 used together. That is, as shown in FIG. 2, the hanging metal fitting 60 used to suspend the telescopic cylinder 30 is formed in a triangular frame shape so that the cutting block A3 of the chimney A1 can be suspended at the center, and at the apex position of the triangle. The rigid rings 31 and 32 are preferably suspended. Although this triangular frame-shaped hanging metal fitting 60 is suspended from the first hook 41 at an asymmetric position, the hanging metal fitting 60 can be easily kept in a horizontal state by adding a balance weight.
[0019]
A suction port hood capable of adjusting the amount of air sucked into the telescopic cylinder 30 can be provided at the upper end opening of the telescopic cylinder 30. This suction hood is composed of a conical top cloth with an open center, and a slide fastener is provided in the slit formed in the conical cloth, and the chimney is adjusted by adjusting the opening area of the conical cloth by adjusting the slide fastener. The suction air volume can be set to an appropriate value according to the height and outer diameter of A1.
[0020]
As will be apparent from the following description, when the incinerator A is disassembled, the cutting block A3 of the chimney A1 is suspended from the second hook 42 of the crane 40 used together, and the cutting block A3 is cut and transferred. The upper end and the lower end of the cutting block A3 are sealed to prevent scattering of internal substances using highly airtight sealing paper or the like.
[0021]
Since the temporary structure for incinerator dismantling according to the illustrated embodiment has the above-described structure, the temporary structure 10A is installed around the incinerator A to be disassembled, and then the canopy frame 10B assembled on site is temporarily installed 10A. The temporary structure 10 can be quickly constructed by placing and fixing it on top.
[0022]
That is, after waterproofing the exposed ground around the incinerator A, while adjusting the interval with the pantograph member 12, a plurality of support columns 11 are installed around the furnace body A2, and the interval between these support columns 11 is set. Secure with wall brace 13. Thereafter, the auxiliary support column 15 is installed at a position corresponding to the end portion of the canopy frame 10 </ b> B to be mounted and reinforced with the diagonal braces 16.
[0023]
The canopy frame 10B is assembled separately from the temporary structure 10A. This assembly can be easily and quickly assembled by obtaining the beam member 21 having a required length using the joint member 22 and the hollow member 21A. .
Therefore, after placing the canopy frame 10B on the temporary structure 10A that has been assembled and assembling the temporary structure 10A and the canopy frame 10B with the L-shaped joint plate 25, the telescopic cylinder 30 is attached to the center of the canopy frame 10B. When the entire temporary structure is attached and covered with the airtight sheets 51, 52, 53, preparation for disassembly is completed.
[0024]
Next, the disassembling procedure of the incinerator A will be described. At the start of dismantling, as shown in FIG. 1, the telescopic cylinder 30 is extended so as to surround the entire chimney A1 by the hanging metal fitting 60 of the first hook 41, and the chimney. The upper end of A1 is sealed with sealing paper X1, the upper part of the chimney A1 to be cut is suspended by the second hook 42, and the inside of the temporary structure 10 is brought to a state lower than the atmospheric pressure by starting the exhaust fan 60. Kept.
[0025]
Accordingly, a downdraft as shown by the arrow in FIG. 1 is always generated inside the temporary structure 10, and the downdraft is also formed inside the telescopic cylinder 30 by this downdraft. Since air is always sucked in, the air in the telescopic cylinder 30 is collected in the internal space of the temporary structure 10 without directly going outside.
For this reason, since all the air inside the telescopic cylinder 30 is collected in the temporary structure 10, even if the chimney A1 is cut inside the telescopic cylinder 30, environmental pollutants inside the chimney A1 are scattered to the external environment. Can be prevented. In the case of cutting / disassembling the chimney A1, if the cutting block A3 of the chimney A1 is lowered into the temporary structure 10 using the second hook 42, the chimney A1 is moved inside the temporary structure 10 having a space. It can be crushed and packed in a sealed bag for waste disposal.
[0026]
In the present invention, the chimney A1 can be efficiently disassembled by the following procedure.
First, the upper end portion of the chimney A1 is closed with the sealing paper X1, and the upper end portion is sealed to prevent the environmental pollutant from flowing out from the upper end opening, and the cutting block A3 to be cut is suspended by the second hook 42. .
[0027]
Next, after cutting the cutting block A3, the cutting block A3 is slightly lifted in the telescopic cylinder 30 by the second hook 42, and the sealing paper X2 is placed on the lower end of the cutting block A3 and the upper end of the remaining chimney A1. X3 is applied to seal them.
Subsequently, when the first hook 41 that suspends the uppermost rigid rings 31 and 32 is once lowered to contract the telescopic cylinder 30, and the rigid ring 31 is removed from the hanging metal fitting 60, the hypothetical FIG. As indicated by the line, the cutting block A3 is completely exposed outside the temporary structure 10 and the telescopic cylinder 30. Of course, even in this state, since the internal space of the temporary structure 10 is maintained at a negative pressure, the external flow of environmental pollutants is prevented by the presence of the downdraft inside the contracted telescopic cylinder 30.
[0028]
After the outside of the cutting block is exposed, the cutting block A3 is moved to a place different from the temporary structure 10 by the movement of the boom 43 of the crane 40 while being suspended by the second hook 42, and is transferred by a transfer means such as a truck. The cutting block A3 is moved to a processing factory where final processing is performed.
[0029]
Further, after the cutting block A3 is transferred, the rigid rings 31, 32 of the telescopic cylinder 30 are suspended again from the hanging metal fitting 60 of the first hook 41, and as shown in FIG. 1, the telescopic cylinder is in a state of surrounding the entire chimney A1. 30 is extended, and the above-described procedure is repeated to cut and convey the remaining chimney A1.
[0030]
After the chimney A1 is completely removed, the normal dismantling process of the furnace body A2 of the incinerator A is performed in the internal space of the temporary structure 10, and the temporary structure 10 is demolished after the dismantled piece is carried out. Needless to point out.
[0031]
In the above-described embodiment, the case where the high chimney A1 of the incinerator A is disassembled while being cut has been described. However, the temporary structure of the present invention is not limited to this example. In this case, the chimney is cut from the inside of the temporary structure, the chimney cut by a crane or the like is removed to the outside, and then the hole in the canopy frame where the chimney is located may be closed, and the presence or absence of the telescopic cylinder is limited Not.
[0032]
【The invention's effect】
As is clear from the above description, according to the present invention, a temporary structure according to the size of the incinerator to be demolished can be quickly constructed on site and can be easily withdrawn, thereby shortening the construction period required for dismantling. Not only can this be done, but labor costs required to construct and withdraw temporary structures can be greatly reduced.
[Brief description of the drawings]
FIG. 1 is a vertical cross-sectional view of the entire demolition equipment during dismantling of an incinerator according to the present invention.
FIG. 2 is an enlarged plan view of the dismantling facility shown with a part cut away.
FIG. 3 is an elevation view of a temporary structure used for the dismantling facility.
4 is an enlarged horizontal sectional view taken along line 4-4 of FIG. 3 of the temporary structure.
FIG. 5 is a front view of a spacing brace used for the temporary structure.
FIG. 6 is a front view of a diagonal brace used for the temporary structure.
FIG. 7 is an enlarged plan view of a main part of a canopy frame used for the temporary structure.
FIG. 8 is an enlarged view of a joint portion between the canopy frame and the temporary structure.
9 is an enlarged view of a main part of FIG.
FIG. 10 is a process explanatory diagram showing a chimney dismantling procedure in the dismantling facility.
[Explanation of symbols]
A Incinerator A1 Chimney A2 Furnace A3 Cutting block X1, X2, X3 Sealing paper 10 Temporary structure 10A Temporary structure 10B Canopy frame 11 Column 12 Pantograph member 13 Wall brace 14 Spacing brace 15 Auxiliary column 16 Diagonal brace 21 Beam member 21A Hollow member 22 Joint member 23 Reinforcement bar 24 Bracing brace 30 Telescopic cylinders 31, 32 Rigid ring 33 Flexible sheet 34 Suction port hood 35 Slit 36 Slide fastener 40 Crane 41 First hook 42 Second hook 43 Booms 51, 52, 53 Airtight sheet 60 Ventilator 70 Dust collector

Claims (4)

In a temporary structure for incinerator demolition that has a rigid structure that surrounds the incinerator furnace body to be dismantled separately and an airtight sheet that covers the entire structure, and collects and exhausts dust in the internal space.
A temporary structure that surrounds the periphery of the incinerator furnace body, and a canopy frame that is placed on top of the temporary structure body and closes the top of the incinerator furnace body,
The temporary structure is composed of a large number of struts installed at intervals, an expandable pantograph member that can be attached to both ends of the joint brackets of these struts, and adjacent struts connected in a horizontal direction between the struts. A wall brace that keeps the distance between
The canopy frame has a parallel elongated beam member fixed at both ends to the temporary structure, and a plurality of reinforcing bars connecting the beam members. Temporary structure for incinerator dismantling.   The temporary structure for dismantling an incinerator according to claim 1, wherein the support column can be connected in a vertically continuous state so as to correspond to the height of the incinerator furnace body. The beam member of the canopy frame includes a plurality of short hollow members and a joint member inserted and connected to the hollow members, and the reinforcing bar is fixed to the beam member through the joint members. A temporary structure for dismantling an incinerator according to claim 1 or 2 . The upper part of the temporary structure telescopic tube communicating with the interior space is provided, claims 1 to 3, the entire chimney extending from the incinerator furnace body, characterized in that it is located inside the same extension sleeve The temporary structure for incinerator dismantling as described in any one of these.

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