JP3144559U - Scaffolding structure of tower-supported chimney - Google Patents

Abstract

An object of the present invention is to provide a steel tower-supported chimney scaffolding structure that can perform work safely and easily, is not limited in the flow line of work, and can be reliably cured.
A horizontal plate 16 constituting a tower 11 is provided with a cover plate 19 and a single-tube scaffold 12 is constructed on a horizontal member 20 made of H-shaped steel fixed on the cover plate 19. The horizontal member 20 is arranged in a direction perpendicular to the horizontal beam 16 with a predetermined interval in the axial direction of the horizontal beam 16. A horizontal member 21 made of H-shaped steel is also arranged in parallel with the horizontal beam 16 between the horizontal members 20 arranged in a direction orthogonal to the horizontal beam 16. The single-pipe scaffolding 12 includes a single building pipe 22 erected on the horizontal member 20, a horizontal single pipe 23 that extends between the single building pipe 22 and extends in the horizontal direction, and is slanted in the vertical plane. The muscular single tube 24 arranged in the direction is coupled by a clamp 25, and a scaffold plate is laid on the horizontal single tube 23.
[Selection] Figure 2

Description

The present invention relates to a scaffolding structure for a tower-supported chimney in which a steel tower that supports the chimney cylinder is constructed around the chimney cylinder.

Conventionally, for tower-supported chimneys where steel towers have been built around high-rise chimneys exceeding 100 m, when using a lifting equipment construction method or location scaffolding to check the soundness of tower members, repair towers, or repaint chimneys, etc. And a gondola combined method was used. For example, in Patent Document 1, all members necessary for a predetermined construction are loaded on a scaffolding device that is suspended from the top of a tower-like high-rise structure with a wire rope and lifts and lowers the inside of the tower-like high-rise structure with a lifting equipment. A method is disclosed in which an operator rides and raises a scaffold device to a predetermined construction site, and the worker attaches a member to a tower-like high-rise structure on the scaffold device.

JP 2000-282691 A

However, in the case of a gondola scaffold as described in Patent Document 1, the location where the construction member is taken in is limited to the vicinity of the lower part of the suspension device that suspends the gondola. For this reason, it is necessary to laterally move the construction member using human power or other devices. In addition, the work on the suspended gondola is very dangerous because it requires a lot of work to get out of the gondola and transfer to existing members. Furthermore, in the case of the gondola scaffolding, there is a problem that the scattering curing cannot be performed sufficiently.

The present invention has been made in view of such circumstances, and it is an object of the present invention to provide a tower-supported chimney scaffolding structure that can perform work safely and easily, is not limited in the flow of work, and can be reliably cured. To do.

In order to achieve the above object, the present invention is a tower-supported chimney scaffolding structure comprising a chimney cylinder and a steel tower built around the chimney cylinder and supporting the chimney cylinder. A single building pipe is erected on a horizontal member fixed on a cover plate wrapped around a horizontal beam that constitutes a single horizontal pipe, and a single horizontal pipe is installed between the single building pipes. It is characterized by a scaffold board laid on top.
In the present invention, a horizontal pipe is fixed on a cover plate wrapped around a horizontal beam that constitutes a steel tower, and a single pipe scaffold is constructed on the cover plate, and an aerial scaffold consisting of a single pipe is constructed on the steel tower. By doing so, the work member can be easily taken in and down, and the work flow line is not limited. Therefore, the work efficiency can be improved and the work period can be shortened. Further, since the work can be performed in a stable posture, the safety during the work is improved. Furthermore, scattering curing can be reliably performed by installing a curing sheet on the outer peripheral surface of the single tube scaffold. In addition, since the horizontal member is fixed to the horizontal beam via the cover plate, the single pipe scaffold can be constructed and disassembled without damaging the steel tower.

Further, in the tower-supported chimney scaffolding structure according to the present invention, the jack base that supports the single building pipe may be fixed on the horizontal member by a vise clamping jig, At least a part of the single building pipe and / or the single horizontal pipe may be fixed to a gusset plate installed in the tower via a catch clamp.
In this configuration, the jack base supporting the single building pipe is fixed on the horizontal member by a vise clamping tool, and at least a part of the single building pipe and / or the horizontal single pipe is attached to the gusset plate. Since it is fixed via the catch clamp, the steel tower is not damaged, the construction and dismantling of the single pipe scaffold is facilitated, and the construction period can be shortened.

Also, in the tower-supported chimney scaffold structure according to the present invention, the horizontal single pipes suspended from the horizontal beams constituting the steel tower are arranged in a lattice shape in plan view, and the scaffold is placed on the horizontal single pipes. A board may be laid.
In this configuration, the horizontal single tubes suspended on the horizontal beams that make up the steel tower are assembled in a lattice shape in plan view, and a scaffolding plate is laid on top of them. Can be built.

In the tower-supported chimney scaffold structure according to the present invention, a horizontal pipe is fixed on the cover plate that is wrapped around the horizontal beam that constitutes the tower, and a single-tube scaffold is constructed on the cover plate, so that it has a stable posture. Work can be performed, and safety during work is improved. Further, since the work flow line becomes free, work efficiency is improved and the work period can be shortened. Furthermore, since the curing sheet can be installed on the outer peripheral surface of the single tube scaffold, the scattering curing can be performed reliably.
In addition, in the steel tower support chimney scaffold structure according to the present invention, the horizontal single pipe suspended from the horizontal beam constituting the steel tower is assembled in a lattice shape in plan view, and the scaffolding plate is laid on it. An aerial scaffold can be easily constructed on a steel tower.

Next, embodiments of the present invention will be described with reference to the accompanying drawings for understanding of the present invention. In the following description, the tower-supported chimney scaffold structure according to claims 1 to 3 will be referred to as a single-tube scaffold, and the tower-supported chimney scaffold structure according to claim 4 as a suspended scaffold for convenience.

FIG. 1 shows a tower-supported chimney in which a scaffolding structure for a tower-supported chimney according to an embodiment of the present invention is installed. The tower-supported chimney is roughly composed of a chimney cylinder 10 and a steel tower 11 that is built around the chimney cylinder 10 and supports the chimney cylinder 10. The chimney cylinder 10 is made of steel and has a cylindrical shape with the same diameter from the base to the top. The steel tower 11 constructed around the chimney cylinder 10 bears a horizontal force when an external force such as a strong wind or an earthquake acts on the chimney cylinder 10. The steel tower 11 is made of a cylindrical member, and has a structure in which a horizontal beam 16 and an oblique member 18 are arranged between four pillars 17 arranged in a square shape in plan view, and the horizontal section becomes smaller toward the top. It has a shape.

In the present embodiment, a first suspension scaffold 13 is constructed in the lower part of the tower 11, a second suspension scaffold 14 is constructed in the middle part, and a third suspension scaffold 15 and a single pipe scaffold 12 are constructed in the upper part. ing. Hereinafter, the scaffold structure of the steel tower supporting chimney will be described in detail.

FIG. 2 is an elevational view of the foot portion of the single tube scaffold 12. A cover plate 19 is mounted on the horizontal beam 16 constituting the steel tower 11, and the single pipe scaffold 12 is constructed on the horizontal member 20 made of H-shaped steel fixed on the cover plate 19. As shown in FIG. 3B, the horizontal member 20 is arranged in a direction orthogonal to the horizontal beam 16 with a predetermined interval (1.5 to 1.8 m) in the axial direction of the horizontal beam 16. A horizontal member 21 made of H-shaped steel is also arranged in parallel with the horizontal beam 16 between the horizontal members 20 arranged in a direction orthogonal to the horizontal beam 16.

As shown in FIG. 2, the single pipe scaffold 12 is erected on the horizontal member 20, and is constructed between the single building pipe 22 extending in the vertical direction and the single single pipe 22, and extends in the horizontal direction. The existing horizontal ground pipe 23 and the bracing single pipe 24 arranged obliquely in the vertical plane are coupled by a clamp 25, and a scaffold plate 37 (see FIG. 4) is laid on the horizontal ground single pipe 23. It is configured. The single building pipe 22 is erected on the horizontal member 20 arranged in a direction orthogonal to the horizontal beam 16 with a predetermined interval (1.5 to 1.8 m). In this Embodiment, as shown in FIG. 3, the horizontal members 20 and 21 are arrange | positioned only at the outer peripheral part of the steel tower 11. As shown in FIG. A single building pipe 22 is erected on both ends of the horizontal member 20, and the single pipe scaffold 12 is constructed only on the outer periphery of the steel tower 11.
In addition, the code | symbol 36 in FIG. 3 (A) is the horizontal net | network for prevention of fall provided directly under the 3rd suspension scaffold 15. FIG.

FIG. 4 shows the details of the foot portion of the single building pipe 22. The cover plate 19 is composed of a semi-cylindrical main body portion 19a and projecting portions 19b formed on both sides of the main body portion 19a in the material axis direction. It is the same as or substantially the same as the 16 radius of curvature. In order to attach the cover plate 19 to the horizontal beam 16, the horizontal beam 16 is sandwiched from above and below by a pair of cover plates 19, and bolts 30 are inserted into bolt holes (not shown) provided in the projecting portions 19 b of the cover plate 19. And fix. A base plate 27 is fixed to the outer peripheral surface of the cover plate 19 disposed on the upper side of the horizontal beam 16, and the lower flange portion of the horizontal member 20 is fixed to the base plate 27 by field welding.

A jack base 28 for supporting the single building pipe 22 is attached to the lower end portion of the single building pipe 22 that is erected directly above the horizontal beam 16. It is fixed on the upper flange portion of the horizontal member 20 by the fastening jig 29. FIG. 5 shows a jig called Bullman (registered trademark) C-type as an example of a vise type clamping jig 29. The clamping jig 29 has a U-shaped body portion 29a in plan view, and a pair of arm portions 29c projecting across the groove portion 29b at the center of the body portion 29a is pressed against the groove portion 29b. Bolts 31 are respectively screwed. In this clamping jig 29, a protrusion 31 a is formed on the tip surface of the pressing bolt 31, and the protrusion 31 a bites into the object to be joined, thereby strengthening the joining force.

Further, in the present single pipe scaffold 12, at least a part of the building single pipe 22 and / or the horizontal single pipe 23 is fixed to a gusset plate 38 installed in the steel tower 11 via a catch clamp 35 ( (See FIG. 6). As shown in FIG. 6, the catch clamp 35 includes a clamp part 33 that holds the single building pipe 22 or the single horizontal pipe 23, and a clamping part 34 that clamps the gusset plate 38. The clamping portion 34 has a U-shape in plan view, and a pressing bolt 32 that protrudes toward the groove portion 34b is screwed into one arm portion 34a.
In addition, about the location which cannot be fixed to the gusset plate 38, the catch clamp 35 etc. are attached to the raising / lowering trap (not shown) provided in the chimney cylinder 10 or the steel tower 11, and the single building pipe 22 or the horizontal single pipe 23 is attached. Secure to the lifting trap.

Next, the third suspension scaffold 15 is taken as an example, and the suspension scaffold will be described.
FIG. 7 shows a vertical section of the third suspended scaffold 15. The third suspension scaffold 15 is suspended by a suspension chain 40 that is hung around the horizontal beam 16 constituting the tower 11 at a predetermined interval (1.5 to 1.8 m) in the axial direction of the horizontal beam 16. The horizontal single pipe 41 is arranged in a lattice shape in plan view, and a scaffold plate 42 is laid on the horizontal single pipe 41. A single building pipe 43 is erected on the peripheral edge of the third suspension scaffold 15, and a single handrail pipe 44 is installed between the single building pipes 43.
Note that a horizontal net 36 for preventing the fall is stretched directly under the third suspension scaffold 15.

The assembly procedure of the single-tube scaffold 12 and the suspended scaffolds 13, 14, 15 is as follows.
First, the assembly procedure of the single pipe scaffold 12 will be described.
(1) A master rope 26 for hanging a safety belt and a horizontal net 36 for fall prevention are installed at a location where the single pipe scaffold 12 is constructed (see FIGS. 2 and 3A).
(2) Mount the cover plate 19 on the horizontal beam 16 constituting the steel tower 11 with a predetermined interval (1.5 to 1.8 m) in the axial direction of the horizontal beam 16. Then, the horizontal member 20 is disposed on the base plate 27 fixed to the outer peripheral surface of the upper cover plate 19 so as to be orthogonal to the horizontal beam 16, and the lower flange of the horizontal member 20 is welded to the base plate 27 (FIG. 4). reference). Further, a horizontal member 21 is installed between the horizontal members 20 arranged in a direction orthogonal to the horizontal beam 16 so as to be parallel to the horizontal beam 16 (see FIG. 3B).

(3) The jack base 28 that supports the single building pipe 22 is fixed on the horizontal member 20 by using a vise clamping tool 29 (see FIG. 4). Next, the horizontal single pipe 23 is installed between the single building pipes 22 using the clamp 25. Further, the muscular single tube 24 is installed in an oblique direction (see FIG. 2). At this time, at least a part of the building single pipe 22 and / or the horizontal single pipe 23 is fixed to the gusset plate 38 installed in the steel tower 11 via the catch clamp 35.
(4) The scaffolding plate 37 is laid on the horizontal single pipe 23.
The scaffold material is lifted using a lift-up crane (not shown).

Next, the procedure for assembling the suspension scaffolds 13, 14, and 15 will be described with reference to FIG. 7, taking the third suspension scaffold 15 as an example.
(1) A master rope 26 for hanging a safety belt and a horizontal net 36 for preventing fall are installed at a place where the third suspension scaffold 15 is constructed.
(2) The suspension chain 40 is hung around the horizontal beam 16 constituting the steel tower 11 with a predetermined interval (1.5 to 1.8 m) in the axial direction of the horizontal beam 16. Then, the horizontal single pipe 41 is attached to the lower end of the suspension chain 40, the horizontal single pipe 41 is arranged in a lattice shape in plan view, and is coupled by the clamp 25.
(3) The scaffolding plate 42 is laid on the horizontal single pipe 41.
(4) The single building pipe 43 is erected on the peripheral edge of the third suspension scaffold 15, and the single handrail pipe 44 is installed between the single building pipes 43.

Although one embodiment of the present invention has been described above, the present invention is not limited to the configuration described in the above-described embodiment, and the scope of matters described in the claims of the utility model registration Other embodiments and modifications conceivable in the above are also included. For example, in the above embodiment, the first suspension scaffold is constructed in the lower part of the steel tower, the second suspension scaffold is constructed in the middle part, and the third suspension scaffold and the single pipe scaffold are constructed in the upper part, respectively. The installation location of the scaffold or suspension scaffold is not limited to this, and may be installed at any location. Moreover, in said embodiment, although the single pipe | tube scaffold was constructed | assembled only in the outer peripheral part of the steel tower, you may construct | assemble a single pipe | tube scaffold so that the whole horizontal cross section of a steel tower may be covered. Furthermore, in the above embodiment, the cover plate has a semi-cylindrical shape, but it goes without saying that the shape of the cover plate changes according to the cross-sectional shape of the horizontal beam.

1 is an elevation view of a tower-supported chimney in which a scaffolding structure for a tower-supported chimney according to an embodiment of the present invention is installed. It is an elevational view of the foot portion of the single pipe scaffold. It is a top view of a single pipe scaffold, (A) has shown the arrangement of a single pipe, and (B) has shown the arrangement of a horizontal material. FIG. 3 is a detailed view of part A in FIG. 2. It is detail drawing of a vise type clamping jig. It is explanatory drawing for demonstrating the fixing method by a catch clamp. It is an elevation sectional view of the 3rd suspension scaffold.

Explanation of symbols

10: chimney cylinder, 11: steel tower, 12: single pipe scaffold, 13: first suspended scaffold, 14: second suspended scaffold, 15: third suspended scaffold, 16: horizontal beam, 17: pillar, 18 : Diagonal material, 19: Cover plate, 19a: Main body part, 19b: Overhang part, 20, 21: Horizontal material, 22: Single building pipe, 23: Single pipe, 24: Single muscular pipe, 25: Clamp, 26: Master rope, 27: Base plate, 28: Jack base, 29: Clamping jig, 29a: Main body part, 29b: Groove part, 29c: Arm part, 30: Bolt, 31, 32: Press bolt, 31a: Projection, 33: Clamping part, 34: Clamping part, 34a: Arm part, 34b: Groove part, 35: Catch clamp, 36: Horizontal net, 37: Scaffold plate, 38: Gusset plate, 40: Suspension chain, 41: Single side pipe , 42: scaffolding plate, 43: single building pipe, 44 Handrail single tube

Claims (4)

A scaffolding structure of a tower-supported chimney having a chimney cylinder and a steel tower built around the chimney cylinder and supporting the chimney cylinder,
A single building pipe is erected on a horizontal member fixed on a cover plate wrapped around a horizontal beam that constitutes the steel tower, and a single horizontal pipe is installed between the single building pipes. Scaffolding structure of a tower-supported chimney characterized in that a scaffolding board is laid on the pipe. 2. The tower-supported chimney scaffold structure according to claim 1, wherein the jack base that supports the single building pipe is fixed on the horizontal member by a vise clamping tool. Steel tower-supported chimney scaffolding structure. 3. The tower-supported chimney scaffold structure according to claim 1, wherein at least a part of the single building pipe and / or the single horizontal pipe is caught by a gusset plate installed in the steel tower. A tower-supported chimney scaffold structure characterized by being fixed through a clamp. A scaffolding structure of a tower-supported chimney having a chimney cylinder and a steel tower built around the chimney cylinder and supporting the chimney cylinder,
A tower-supported chimney characterized in that a horizontal single pipe suspended from horizontal beams constituting the steel tower is arranged in a lattice in plan view, and a scaffolding plate is laid on the horizontal single pipe. Scaffolding structure.

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