JP2017082487A - Lining material removal apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a removal apparatus not only capable of reducing a work burden on a worker but also capable of more efficiently removing a lining material of a chimney.SOLUTION: A lining material removal apparatus installed on an inner wall of a chimney includes a gondola which is ascendably/descendably arranged within the chimney, and a backhoe which is arranged on the gondola and which has a breaker installed within an arm part.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a lining material removal device, and more particularly to a lining material removal device installed on an inner wall of a chimney.

  Generally, a lining material such as a castable is installed on an inner wall of a chimney to protect a structural member (metal or reinforced concrete cylinder) from exhaust gas. When the chimney is dismantled, the lining material is removed from the inner wall of the chimney (so-called “swing” operation). This is because the lining material has a large specific gravity, and if the lining material is left installed, the chimney is heavy and dismantling is difficult. That is, by first removing the lining material from the inner wall of the chimney, the chimney becomes lighter and the subsequent disassembly work becomes easier.

  Usually, such a lining material removal operation is performed manually using an apparatus called a breaker. More specifically, a gondola that can be raised and lowered is suspended inside the chimney, and the lining material is removed by a plurality of workers.

  As described above, the operation of removing the chimney lining material is usually performed by a worker using a breaker.

  However, such a method is a heavy labor for workers and has a problem in terms of work efficiency. In particular, in the case of a large chimney whose height exceeds, for example, 60 m, it takes a considerable period of time to remove the lining material from the chimney.

  The present invention has been made in view of such a problem, and in the present invention, a removal device capable of reducing the work burden on the worker and more efficiently removing the lining material of the chimney. The purpose is to provide.

In the present invention,
A lining material removal device installed on the inner wall of a chimney,
Inside the chimney, a gondola arranged to be movable up and down,
A backhoe disposed on the gondola, and a backhoe in which a breaker is installed in the arm part;
The removal apparatus characterized by having is provided.

  According to the present invention, it is possible to provide a removal device that can reduce the work burden on the worker and can more efficiently remove the lining material of the chimney.

It is the figure which showed typically the example of 1 structure of the removal apparatus of the lining material by one Embodiment of this invention. It is the side view which showed roughly the gondola of the removal apparatus arrange | positioned inside the chimney. FIG. 3 is a simplified top view of the first floor portion of the gondola shown in FIG. 2. FIG. 3 is a simplified top view of the second floor portion of the gondola shown in FIG. 2. It is the figure which showed roughly the flow at the time of removing the lining material of a chimney using the lining material removal apparatus by one Embodiment of this invention.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

(Lining material removing apparatus according to an embodiment of the present invention)
FIG. 1 shows a lining material removing apparatus (hereinafter simply referred to as “(in accordance with the present invention) removing apparatus”) according to an embodiment of the present invention. FIG. 1 shows a state in which the removing device is installed in a chimney for dismantling.

  As shown in FIG. 1, in the illustrated example, the chimney 10 for dismantling is a steel tower support type chimney, and a steel tower 50 for supporting the chimney 10 is disposed around the chimney 10. However, this is merely an example, and the chimney 10 may be an independent self-supporting chimney.

  The chimney 10 has a cylindrical body 15, and a lining material 20 is installed on the inner wall of the cylindrical body 15. An opening 70 is provided at the bottom of the chimney 10.

  On the other hand, the removing device 100 includes a gondola 110 disposed inside the chimney 10, a gondola beam 170, and a gondlauinch 180 installed on the ground 1.

  The gondola inch 180 has two gondola wires 190 that are coupled to the gondola 110. The gondola beam 170 has a role of supporting the two gondola wires 190 on the upper part of the chimney 10. The gondola 110 is suspended inside the chimney 10 by the two gondola wires 190 so as to be movable up and down.

  In FIG. 2, the side view of the gondola 110 of the removal apparatus 100 arrange | positioned inside the chimney 10 is shown schematically. FIG. 3 schematically shows a simplified top view of the first floor portion of the gondola 110. Further, FIG. 4 schematically shows a simplified top view of the second floor portion of the gondola 110.

  As shown in FIGS. 2 to 4, the removal apparatus 100 according to the present invention has a feature that a backhoe 150 is disposed on a gondola 110. The backhoe 150 has a breaker 152 attached to the arm portion.

  As described above, conventionally, an operation for removing a chimney lining material has been performed by a worker using a breaker. However, such a method is a heavy labor for workers and has a problem in terms of work efficiency. In particular, in the case of a large chimney whose height exceeds, for example, 60 m, there is a problem that it takes a considerable period of time to remove the lining material from the chimney.

  On the other hand, in the removing apparatus 100 according to the present invention, the lining material 20 is removed by the backhoe 150 on the gondola 110.

  In this case, when the lining material 20 of the chimney 10 is removed, the worker only needs to operate the backhoe 150, and it is not necessary for the worker himself to remove the lining material 20 using the breaker as in the conventional case. . Therefore, when the removal apparatus 100 according to the present invention is used, the work load on the worker is significantly reduced. Moreover, it becomes possible to remove the lining material 20 of the chimney 10 more efficiently than in the past.

  For example, in the conventional method, in the case of a large chimney 10 having an inner diameter of about 5 m, the daily removal amount of the lining material 20 is only about 4 m to 5 m corresponding to the height of the chimney, even with six workers. . On the other hand, when the removal apparatus 100 is used, it is possible to realize a work speed of about 10 m / day at the height of the chimney, for example.

  As described above, the removal apparatus 100 according to the present invention can reduce the work burden on the worker and can increase the efficiency of the lining material removal work.

(Detailed configuration of removal apparatus 100 according to the present invention)
Next, a detailed configuration of the removing apparatus 100 according to the present invention will be described. In the following description, the reference numerals used in FIGS. 1 to 4 are used for explaining each member for the sake of clarity.

(Gondola 110)
As shown in FIG. 2, the gondola 110 has a two-story structure, and has a bottom floor 120 at the bottom and an upper floor 122 at the top. The bottom floor 120 and the top floor 122 are horizontally coupled to each other by a suspension pillar 125. Further, a roof 130 is installed on the upper part of the upper floor 122. 3 and 4 described above, the roof 130 is omitted.

  A backhoe 150 is placed on the bottom floor 120. On the other hand, various devices and the like are installed on the upper floor 122. An operator may be arranged on the upper floor 122. An operator may monitor or assist various operations.

  Moreover, the roof 130 is installed in order to prevent the member from dropping from the upper part. The form of the roof 130 is not particularly limited, and the roof 130 may cover a part or the whole of the upper floor 122 as viewed from above.

  The shapes of the bottom floor 120 and the upper floor 122 are not particularly limited. These may be, for example, a substantially circular shape concentric with the inside of the chimney 10 (see, for example, FIGS. 3 and 4).

  The upper floor 122 and / or the roof 130 are members that are arbitrarily installed and are not necessarily required members. Therefore, for example, the gondola 110 may have a first floor structure having only the bottom floor 120. Alternatively, the gondola 110 may have a bottom floor 120 and a roof 130 installed on top of the bottom floor 120.

(Fixing means)
The gondola 110 may have fixing means for suppressing the swing of the gondola 110. By providing the fixing means, it is possible to suppress the swing of the gondola 110 particularly during the operation of the backhoe 150, that is, during the removal work of the lining material 20.

  For example, in the example shown in FIGS. 2 to 4, the gondola 110 includes a hydraulic unit 132 and a hydraulic cylinder 135 as fixing means.

  In the example shown in FIGS. 2 to 4, the hydraulic unit 132 is arranged on the upper floor 122, but the arrangement location is not particularly limited. Similarly, the hydraulic cylinder 135 is installed on the bottom floor 120 of the gondola, but the installation location is not particularly limited.

  The hydraulic cylinder 135 is driven by the hydraulic unit 132 so that the overall length changes. More specifically, the hydraulic cylinder 135 can extend outward or shrink inward along the radial direction of the chimney 10. Therefore, for example, during operation of the backhoe 150, the gondola 110 can be fixed by pressing the tip of the hydraulic cylinder 135 against the inner wall of the chimney 10.

  The number of hydraulic cylinders 135 is not particularly limited, and the number of hydraulic cylinders 135 may be two, three, four (example of FIG. 3), or more, for example.

  Note that the configuration of the fixing means is not limited to such a combination of the hydraulic unit 132 and the hydraulic cylinder 135. That is, as long as the gondola 110 can be prevented from shaking, any configuration of fixing means may be used. For example, you may use the rod-shaped member which can be expanded-contracted manually as a fixing means. Various other forms are also conceivable.

(Guidance means)
The gondola 110 may have guiding means for facilitating the raising and lowering of the gondola 110. By providing the guiding means, it is possible to suppress the swinging of the gondola 110 when it rises and falls.

  For example, in the example shown in FIG. 3, the gondola 110 has a plurality of guide roller assemblies 138 that extend radially toward the inner wall of the chimney 10. Each guide roller assembly 138 has a structure in which the tip can be rotated by a roller.

  Such a guide roller assembly 138 is used with its tip in contact with the inner wall of the chimney 10. For example, when the tip of the guide roller assembly 138 is brought into contact with the inner wall of the chimney 10 when the gondola 110 is raised or lowered along the height direction of the chimney 10, the gondola 110 is shaken by the rotation of the tip roller. The gondola 110 can be smoothly moved up and down.

  Similarly, a second guide roller assembly 139 may be provided on the upper floor 122 of the gondola 110 (see FIG. 4).

  Here, in the example shown in FIGS. 2 to 4, the guide roller assemblies 138 and 139 are fixed types whose total length is not changed, but the guide roller assemblies 138 and 139 are manually or mechanically or electrically operated. The formula may be a variable type whose total length can be changed.

  The number of guide roller assemblies 138, 139 is not particularly limited, and there are, for example, two, three, four (examples of FIGS. 3 and 4) or more guide roller assemblies 138, 139, respectively. May be.

  The configuration of the guide means is not limited to such guide roller assemblies 138 and 139. In other words, any configuration of guiding means may be used as long as it can suppress the swinging of the gondola 110 during raising and lowering.

  However, the guiding means is an arbitrary member and is not necessarily installed.

(Backhoe 150)
The model of the backhoe 150 is not particularly limited, and a commercially available backhoe can be used. In this case, a breaker 152 is attached to the arm portion of the backhoe 150.

  The weight of the backhoe 150 is limited by the load resistance of the gondola 110 (and the gondola beam 170, the gondola wire 190, etc.) and the inner diameter of the chimney 10. For this reason, as the backhoe 150, for example, one having a weight of 3 t or less may be selected.

  The power source of the backhoe 150 is not particularly limited, and the power source may be, for example, an internal combustion engine such as a diesel engine and a gasoline engine, or an electric motor (electric motor). Alternatively, the power source of the backhoe 150 may be a hybrid of an internal combustion engine and an electric motor. In particular, when the power source includes an electric motor, exhaust from the backhoe 150 can be significantly suppressed.

(Chimney 10)
Although the chimney 10 is not included in the removal device 100 according to the present invention, it is a target to which the removal device 100 according to the present invention is applied.

  The form of the chimney 10 is not particularly limited. The chimney 10 has, for example, a chimney having a substantially constant inner diameter as shown in FIG. 1 and extending from the top to the bottom along the vertical direction (hereinafter referred to as a “fixed inner diameter straight chimney”). May be used). Alternatively, the chimney 10 is a chimney that extends from the top to the bottom along the vertical direction in a state where the inner diameter changes (usually increases) from the top to the bottom (hereinafter referred to as “variable inner diameter straight chimney”). May be used). The chimney 10 has a chimney whose inner diameter changes (usually increases) from the top to the bottom and partially extends from the vertical direction (hereinafter referred to as a “variable inner diameter inclined portion-containing chimney”). May be used).

  In the “variable inner diameter inclined portion-containing chimney”, the chimney normally has a shape that spreads toward the bottom. That is, the chimney portion extending in a state inclined from the vertical direction is usually present on the bottom side.

  In addition, various forms of chimney are assumed.

  In any form, the chimney 10 is preferably a large chimney whose height from the ground 1 exceeds 60 m. The height may be in the range of 100 m to 200 m, for example. In this case, the effect of the present invention, that is, the high removal efficiency of the lining material 20 becomes more remarkable.

  Further, the inner diameter of the chimney 10 may be in the range of 3 m to 9 m, for example, in the range of 5 m to 6 m. Here, when the chimney 10 is a chimney whose inner diameter changes depending on the height, such as “variable inner diameter straight chimney” and “variable inner diameter inclined chimney”, the “chimney inner diameter” means the maximum inner diameter. Dimension shall mean.

(Operation method of removal device)
Next, a method for actually removing the lining material of the chimney using the removing device according to one embodiment of the present invention will be described with reference to FIG.

  FIG. 5 schematically shows a flow of a method of removing a chimney lining material (hereinafter referred to as a “(lining material) removal method”) using the removal device according to the embodiment of the present invention.

As shown in FIG. 5, the method of removing the lining material is
(A) a step of placing the gondola on which the backhoe is placed inside the chimney (step S110);
(B) a step of coupling a gondola wire extending from the gondola inch to the gondola (step S120);
(C) a step of raising the gondola to the top of the chimney (step S130);
(D) a step of removing the lining material of the inner wall of the chimney by a backhoe (step S140);
(E) Lowering the gondola by a predetermined distance and removing the lining material by a backhoe at a new height position (step S150);
(F) a step of repeating the step (e) (step S160);
Have

  Hereinafter, each step will be described. In the following description, the reference numerals shown in FIGS. 1 to 3 are used for representing each member for the sake of clarity.

(Process S110)
First, the gondola 110 is installed inside the chimney 10. For this reason, the opening part 70 is provided in the bottom part of the chimney 10 as needed. However, the chimney 10 may be provided with the opening 70 in advance, and in this case, the work of providing the opening 70 is omitted. Next, the backhoe 150 is placed on the bottom floor 120 of the gondola 110. The backhoe 150 includes a breaker 152 in the arm portion.

  In addition to such a procedure, the backhoe 150 may be previously placed on the gondola 110 outside the chimney 10, and the gondola 110 may be placed inside the chimney 10 with the backhoe 150 placed. .

(Process S120)
Next, the gondola wire 190 is coupled to the gondola 110 via the gondola beam 170. For this reason, the gondola beam 170 is installed above the chimney 10. The gondola beam 170 acts as a fulcrum for the gondola wire 190.

  The gondola wire 190 extends from a gondola inch 180 disposed outside the chimney 10. The number of gondola wires 190 is not particularly limited as long as it is two or more.

  Here, when the chimney 10 is a “fixed inner diameter type straight chimney” as shown in FIG. 1, the gondola beam 170 is installed at the top of the chimney 10.

  On the other hand, when the chimney 10 is a “variable inner diameter type straight chimney” or a “variable inner diameter type chimney containing an inclined portion”, the gondola 110 cannot be raised to the top of the chimney 10 due to the inner diameter of the chimney 10. It can be envisaged.

  In such a case, the gondola beam 170 is installed in the chimney 10 at the uppermost position having an inner diameter where the gondola 110 can be disposed, and the steps after the step S130 described later are performed at a height below the gondola beam 170. The Further, at a position higher than the gondola beam 170, the lining material is removed by a conventional worker's turning operation.

(Step S130)
Next, the gondola wire 190 is wound around the gondola inch 180 to raise the gondola 110 to the “maximum lift position” above the chimney 10.

  As described above, the “maximum ascending position” of the gondola 110 is determined by the position of the gondola beam 170. For example, when the chimney 10 is a “fixed inner diameter type straight chimney”, the gondola 110 can rise to the vicinity of the top of the chimney 10.

  At this time, guide means such as the above-described guide roller assembly 138 and / or the second guide roller assembly 139 are provided so as to suppress the swing of the gondola 110 and enable the gondola 110 to rise smoothly. May be used. That is, the gondola 110 is shaken by raising the gondola 110 while the tips (rotating rollers) of the guide roller assemblies 138 and 139 are in contact with and rotated by the inner wall of the chimney 10 (that is, the surface of the lining material 20). Is suppressed.

  In addition, when the chimney 10 is a “variable inner diameter type straight chimney” and a “variable inner diameter type inclined portion-containing chimney”, the guide roller assemblies 138 and 139 are preferably variable in overall length. When such guide roller assemblies 138 and 139 are used, the tips of the guide roller assemblies 138 and 139 can always be brought into contact with the inner wall of the chimney 10 when the gondola 110 is raised. For this reason, it becomes possible to improve the stability at the time of movement of the gondola 110.

  Thereafter, the gondola 110 is stopped at a predetermined height.

  In order to fix the gondola 110 at the stop position, the aforementioned hydraulic cylinder 135 may be used as a fixing means. In this case, each hydraulic cylinder 135 is extended radially by the hydraulic unit 132 until it contacts the inner wall of the chimney 10. The end of each hydraulic cylinder 135 is strongly pressed against the lining material 20 of the chimney 10, thereby fixing the gondola 110.

(Process S140)
Next, the lining material 20 of the chimney 10 is removed by the breaker 152 attached to the arm of the backhoe 150. The arm of the backhoe 150 can move up and down and can rotate in the horizontal direction around the backhoe 150. For this reason, the lining material 20 can be removed from the inner wall of the chimney 10 over the entire periphery of the backhoe 150 by moving the breaker 152 up and down and rotating.

(Process S150)
When the lining material 20 is removed over the entire periphery of the backhoe 150, the hydraulic cylinder 135 is contracted, and the gondola 110 is released from fixing to the inner wall of the chimney 10.

  Then, by extending the gondola wire 190 from the gondola inch 180, the gondola 110 descends. The descending distance varies depending on the capabilities of the backhoe 150 and the breaker 152, but is, for example, in the range of 1 m to 2 m.

  When the gondola 110 is lowered, the above-described guide roller assemblies 138 and 139 may be used. Thereby, the gondola 110 can be smoothly lowered without causing the gondola 110 to shake much.

  When the gondola 110 is lowered by a predetermined distance, the gondola 110 may be fixed to the inner wall of the chimney 10 again using the fixing means as described above. In this state, the lining material 20 of the chimney 10 is removed by the breaker 152 of the backhoe 150 by the method described in step S140.

(Process S160)
Thereafter, the lining material 20 can be removed along the height of the chimney 10 by repeating the step S150.

  As described above, according to such a method, it is possible to reduce the work burden on the worker and to increase the efficiency of the removal work of the lining material 20.

  The configuration and characteristics of the present invention have been described with reference to FIGS. 1 to 5 by taking the removal apparatus 100 as an example. However, these are merely examples, and the lining material removing apparatus according to the present invention may have other configurations. That is, in the lining material removal apparatus according to the present invention, what is important is a configuration in which a backhoe with a breaker is mounted on a gondola, and any configuration removal apparatus may be used as long as this is satisfied. It is necessary to keep in mind.

DESCRIPTION OF SYMBOLS 1 Ground 10 Chimney 15 Cylindrical body 20 Lining material 50 Steel tower 70 Opening part 100 Removal apparatus 110 Gondola 120 Bottom floor 122 Upper floor 125 Suspension pillar 130 Roof 132 Hydraulic unit 135 Hydraulic cylinder 138 Guide roller assembly 139 2nd guide roller assembly 150 Backhoe 152 Breaker 170 Gondola Beam 180 Gondolouin 190 Gondola Wire

Claims (10)

A lining material removal device installed on the inner wall of a chimney,
Inside the chimney, a gondola arranged to be movable up and down,
A backhoe disposed on the gondola, and a backhoe in which a breaker is installed in the arm part;
The removal apparatus characterized by having. The gondola has a bottom floor and an upper floor;
The removal apparatus according to claim 1, wherein the backhoe is placed on the bottom floor.   The removal device according to claim 1, wherein the gondola has a fixing unit that suppresses shaking of the gondola.   The removal device according to claim 3, wherein the fixing means includes an extendable and contractible hydraulic cylinder arranged to protrude radially from the gondola toward the inner wall of the chimney.   The removal device according to any one of claims 1 to 4, wherein the gondola has guiding means for suppressing shaking of the gondola when the gondola moves up and down. The guide means has a plurality of guide roller assemblies arranged to project radially from the gondola toward the inner wall of the chimney,
6. The removing apparatus according to claim 5, wherein the guide roller assembly has a roller at a tip.   The removal apparatus according to claim 1, wherein the backhoe has a weight of 3 t or less. The removal device further includes:
With gondlauinches,
A gondola beam attached to the chimney;
Have
The gondola is coupled to a plurality of gondola wires extending from the gondola inch through the gondola beam, and is thereby arranged to be raised and lowered in the chimney. The removal apparatus as described in any one.   The removal device according to any one of claims 1 to 8, wherein the chimney has an inner diameter of 3 m or more.   The removing device according to claim 1, wherein the chimney has a height of 60 m or more.

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