JP7442234B1 - Scaffolding installation equipment and method for installing scaffolding around tubular structures - Google Patents

Abstract

[Problem] A scaffolding installation device that can more efficiently dismantle a cylindrical structure. A scaffold installation device includes a support member welded to the outer peripheral surface of the cylindrical structure and a scaffold bracket, the support member has a bolt hole, and the scaffold bracket has a bolt hole. a horizontal member having a first through hole at one end; a first diagonal member connected to another end of the horizontal member; and a second diagonal member; has a long hole extending along the extending direction of the first diagonal member, the second diagonal member has a second through hole, and the scaffold bracket has a second diagonal member that extends in the extending direction of the first diagonal member. The first diagonal member and the second diagonal member are connected to the support member by fastening with bolts passing through the first through hole and the bolt hole of the support member, and the first diagonal member and the second diagonal member are connected to the second through hole and the bolt hole of the support member. By fastening with bolts passing through long holes, it becomes a single diagonal member whose overall length can be adjusted. [Selection diagram] Figure 9

Description

The present invention relates to a scaffold installation device and a method for installing a scaffold around a cylindrical structure.

When dismantling a cylindrical structure such as a large chimney, first, work scaffolding is installed around the chimney at each predetermined height position. Next, the cylindrical structure is cut at a predetermined length from the top by a worker on the work scaffold. The cut parts will be lifted to the ground by a crane. By repeating this process from the top to the bottom of the cylindrical structure, the cylindrical structure is dismantled.

Recently, in order to install work scaffolding more efficiently, a steel band is installed around the cylindrical structure at a predetermined height position, and the scaffolding bracket is attached to the locking hole provided in the steel band. A method of inserting the .

The scaffolding bracket has a horizontal portion at the top. Therefore, a work scaffold can be constructed around the cylindrical structure by installing a scaffold board over the horizontal portions of a plurality of scaffold brackets installed around the cylindrical structure.

Japanese Patent Application Publication No. 2000-170376

As mentioned above, various methods have been proposed as methods for installing scaffolding for dismantling cylindrical structures.

However, from the viewpoint of efficiency, there is still room for improvement even in the conventional method.

For example, in the method described in Patent Document 1, it is necessary to attach a steel band along the periphery of a cylindrical structure at multiple height positions.

Each steel band is constructed by interconnecting a plurality of band parts arranged along the circumferential direction with bolts. Therefore, as the diameter of the cylindrical structure increases, the number of required band parts increases, and accordingly, a large number of connection operations are required. In particular, in the case of large cylindrical structures over 60m in height, the number of height positions at which steel bands should be installed increases, making it necessary to connect more parts. .

The present invention has been made in view of such problems, and an object of the present invention is to provide a scaffolding installation device that can more efficiently dismantle a cylindrical structure. Another object of the present invention is to provide a method for installing a scaffold that can be carried out more efficiently when dismantling a cylindrical structure.

The present invention provides a scaffold installation device used when installing a scaffold around a cylindrical structure, comprising:
a support member welded to the outer peripheral surface of the cylindrical structure;
scaffolding bracket,
has
The support member has a bolt hole,
The scaffolding bracket has a horizontal member having a first through hole at one end, a first diagonal member connected to another end of the horizontal member, and a second diagonal member,
The first diagonal member has a long hole extending along the extending direction of the first diagonal member, and the second diagonal member has a second through hole,
The scaffold bracket is connected to the support member by fastening with a bolt passing through a first through hole of the scaffold bracket and the bolt hole of the support member,
The first diagonal member and the second diagonal member are fastened with bolts passing through the second through hole and the elongated hole to form a single diagonal member whose entire length can be adjusted. provided.

The present invention also provides a method of installing a scaffold around a cylindrical structure, comprising:
(1) A step of welding a plurality of support members along the periphery of the cylindrical structure at a predetermined height position of the cylindrical structure, each support member having a bolt hole; ,
(2) A step of preparing multiple scaffolding brackets,
The scaffolding bracket has a first member and a second member,
The first member has a horizontal member having a first through hole at one end, and a first diagonal member connected to another end of the horizontal member,
the second member has a second diagonal;
The first diagonal member has a long hole extending along the extending direction of the first diagonal member, the second diagonal member has a second through hole, and the second diagonal member has a second through hole, and the second diagonal member has a second through hole. The diagonal member and the second diagonal member are fastened with bolts passing through the elongated hole and the second through hole to form a single diagonal member, and a scaffold bracket having the single diagonal member is obtained. ,
(3) A step of fastening the scaffold bracket and the corresponding support member with bolts passed through the first through hole and the bolt hole, whereby the the horizontal members of the scaffolding bracket are radially projected;
(4) installing a scaffolding member using the horizontal member of the scaffolding bracket;
has
A method is provided in which the steps (1) and (2) are performed in any order.

Furthermore, the present invention provides a method for installing a scaffold around a cylindrical structure, comprising:
(1) A step of welding a plurality of support members along the periphery of the cylindrical structure at a predetermined height position of the cylindrical structure, each support member having a bolt hole; ,
(2) A step of preparing a plurality of first members and second members for the scaffold bracket,
The first member has a horizontal member having a first through hole at one end, and a first diagonal member connected to another end of the horizontal member,
the second member has a second diagonal;
The first diagonal member has a long hole extending along the extending direction of the first diagonal member, and the second diagonal member has a second through hole;
(3) A step of fastening the first member for the scaffold bracket and the corresponding support member with bolts passed through the first through hole and the bolt hole, whereby the cylindrical the horizontal member protrudes radially from the periphery of the structure;
(4) fastening the first diagonal member and the second diagonal member using bolts passing through the second through hole of the second diagonal member and the elongated hole of the first diagonal member; , completing a scaffolding bracket having a single diagonal having a desired overall length;
(5) installing a scaffolding member using the horizontal member of the scaffolding bracket;
has
A method is provided in which the steps (1) and (2) are performed in any order.

ADVANTAGE OF THE INVENTION According to this invention, the scaffold installation device which can dismantle a cylindrical structure more efficiently can be provided. Furthermore, the present invention can provide a method for installing a scaffold that can be performed more efficiently when dismantling a cylindrical structure.

FIG. 2 is a diagram schematically showing an example of a cylindrical structure. FIG. 2 is a schematic perspective view of a support member included in a scaffold installation device according to an embodiment of the present invention. FIG. 1 is a schematic exploded perspective view of a scaffold bracket included in a scaffold installation device according to an embodiment of the present invention. 1 is a diagram schematically showing a flow of a method for constructing a scaffold around a cylindrical structure using a scaffold installation device according to an embodiment of the present invention. In the scaffold installation device according to one embodiment of the present invention, it is a diagram schematically showing a state in which a support member is installed around a cylindrical structure. In the scaffold installation device according to one embodiment of the present invention, it is a diagram schematically showing a state in which a scaffold bracket is attached to a support member. In the scaffold installation device according to one embodiment of the present invention, it is a diagram schematically showing a state in which flooring is installed on the horizontal member of the scaffold bracket. FIG. 2 is a side view schematically showing a scaffolding bracket installed at a location where the outer peripheral surface of the cylindrical structure extends in the vertical direction. FIG. 2 is a side view schematically showing a scaffolding bracket installed at a location where the outer circumferential surface of the cylindrical structure is inclined by +θ (to the left) with respect to the vertical direction. FIG. 3 is a side view schematically showing a scaffolding bracket installed at a location where the outer peripheral surface of the cylindrical structure is inclined by −θ (to the right) with respect to the vertical direction. FIG. 3 is a diagram schematically showing the flow of another method for constructing a scaffold around a cylindrical structure using a scaffold installation device according to an embodiment of the present invention.

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

(Scaffold installation device according to an embodiment of the present invention)
In one embodiment of the present invention, a scaffold installation device is provided that is used when installing a scaffold around a cylindrical structure.

FIG. 1 schematically shows an example of the form of a cylindrical structure 1 to be installed by a scaffold installation device according to an embodiment of the present invention.

In the example shown in FIG. 1, the cylindrical structure 1 is composed of a steel chimney. Although the height of the cylindrical structure 1 is not particularly limited, the height may be, for example, 60 m or more, 100 m or more, or 200 m or more.

In addition, in FIG. 1, a steel tower 20 is shown around the cylindrical structure 1. When the cylindrical structure 1 is a tall steel chimney, it is difficult to make the cylindrical structure 1 independent, so such a steel tower support type is generally adopted.

However, as a method for installing a scaffold for dismantling the steel tower 20, a conventional method can be adopted. Therefore, in the present application, a description of the method for installing a scaffold for dismantling the steel tower 20 will be omitted. In addition, when generally dismantling the steel tower supporting type cylindrical structure 1, both the cylindrical structure 1 and the steel tower 20 are dismantled simultaneously. That is, both are dismantled from the top, with the height level decreasing in the same way.

When dismantling such a cylindrical structure 1, a scaffold installation device according to an embodiment of the present invention is used.

A scaffold installation device (hereinafter referred to as "first device") according to an embodiment of the present invention includes a support member and a scaffold bracket.

Figures 2 and 3 schematically illustrate a support member and a scaffolding bracket, respectively, included in the first device.

FIG. 2 schematically shows an example of the configuration of the support member 110. A schematic perspective view of the support member 110 is shown in FIG.

As shown in FIG. 2, the support member 110 is made of metal and has a substantially block-like or substantially plate-like shape. The support member 110 has a first major surface 112 and a second major surface 114 facing each other, and four side surfaces 116.

A bolt hole 125 is formed in the first main surface 112 of the support member 110 and penetrates to the second main surface 114.

In the example shown in FIG. 2, a single bolt hole 125 is formed approximately at the center of the first main surface 112. However, the number of bolt holes 125 may be plural.

The support member 110 is made of a material, such as steel, that can be welded to the outer peripheral surface of the cylindrical structure.

The dimensions of support member 110 are not particularly limited. For example, the long side dimension of the first main surface 112 of the support member 110 may be in the range of 100 mm to 150 mm, and the short side dimension may be in the range of 75 mm to 100 mm. Further, the thickness of the side surface 116 may be in the range of 9 mm to 12 mm.

FIG. 3 schematically shows an example of the configuration of the scaffolding bracket 140. An exploded side view of the scaffolding bracket 140 is shown in FIG.

As shown in FIG. 3, the scaffolding bracket 140 is constructed by interconnecting a first member 141A and a second member 141B.

The first member 141A includes a horizontal member 144, a vertical member 146, and a first diagonal member 148.

The horizontal member 144 has a substantially prismatic shape extending in one direction. The horizontal member 144 has a first through hole 160 at a first end 142 , and the other end (second end) 143 is joined to a first diagonal member 148 .

The number of first through holes 160 formed in the first end 142 of the horizontal member 144 corresponds to the number of bolt holes 125 in the support member 110. Therefore, when the support member 110 has one bolt hole 125, the number of first through holes 160 is one, and when there are two bolt holes 125, the number of first through holes 160 is also two. , and so on.

Moreover, the shape of the cross section perpendicular to the extending direction of the first through hole 160 and/or the bolt hole 125 is not particularly limited. That is, the cross section of the first through hole 160 and/or the bolt hole 125 may have a shape other than circular, such as an ellipse.

The vertical member 146 has a substantially prismatic shape that extends perpendicularly to the horizontal member 144 . The vertical member 146 is joined to an intermediate portion of the horizontal member 144 in the longitudinal direction.

The first diagonal member 148 has an elongated hole 162 extending along the extending direction of the first diagonal member 148 .

On the other hand, the second member 141B includes a second diagonal member 152 and an abutment member 155. The abutment member 155 is installed at one end of the second diagonal member 152. Furthermore, one or more second through holes 164 are formed at the other end of the second diagonal member 152 .

The contact member 155 is attached to the tip of the second diagonal member 152 so as to be tiltable (in the vertical direction in FIG. 3). For example, a bolt hole 156 may be formed at the end of the second diagonal member 152, and the abutment member 155 may be connected via this bolt hole 156.

As will be described later, when the scaffold bracket 140 is fixed to the support member 110 and the scaffold installation device is configured, the contact member 155 is brought into contact with the outer peripheral surface of the cylindrical structure, and the scaffold It has a role of stabilizing the bracket 140.

The second diagonal member 152 can be connected to the first diagonal member 148 by fastening with bolts passing through the elongated hole 162 of the first diagonal member 148 and the second through hole 164 of the second diagonal member 152. can.
As a result, the first diagonal member 148 and the second diagonal member 152 are integrated, and a single diagonal member (hereinafter also referred to as “integrated diagonal member (159)”) is configured.

That is, the first member 141A and the second member 141B are integrated through the bolt passing through the elongated hole 162 of the first diagonal member 148 and the second through hole 164 of the second diagonal member 152, A scaffolding bracket 140 is configured.

Here, the first diagonal member 148 is provided with an elongated hole 162. Therefore, when integrating the first diagonal member 148 and the second diagonal member 152 via the bolt, the fastening position of the bolt can be changed. Moreover, this makes it possible to change the total length of the "integrated diagonal member" to a desired value.

Each member of the scaffolding bracket 140 may be made of steel, for example.

(Method of installing a scaffold using a scaffold installation device according to an embodiment of the present invention)
Next, with reference to FIG. 4, a method for constructing a scaffold around a cylindrical structure using a scaffold installation device according to an embodiment of the present invention will be described.

Here, as an example, a method for installing a scaffold around the cylindrical structure 1 using the first device described above will be described.

FIG. 4 schematically shows a flow of a method for constructing a scaffold (hereinafter referred to as the "first method").

As shown in Figure 4, the first method is
(1) A step of welding a plurality of support members along the periphery of the cylindrical structure at a predetermined height position of the cylindrical structure, each support member having a bolt hole ( S110) and
(2) A step of preparing multiple scaffolding brackets,
The scaffolding bracket has a first member and a second member,
The first member has a horizontal member having a first through hole at one end, and a first diagonal member connected to another end of the horizontal member,
the second member has a second diagonal;
The first diagonal member has a long hole extending along the extending direction of the first diagonal member, the second diagonal member has a second through hole, and the second diagonal member has a second through hole, and the second diagonal member has a second through hole. The diagonal member and the second diagonal member become a single diagonal member by fastening with bolts passing through the elongated hole and the second through hole, and a scaffolding bracket having the single diagonal member is obtained, a step ( S120) and
(3) A step of fastening the scaffold bracket and the corresponding support member with bolts passed through the first through hole and the bolt hole, whereby the a step (S130) in which the horizontal member of the scaffolding bracket is radially protruded;
(4) installing a scaffolding member using the horizontal member of the scaffolding bracket (S140);
has.

However, the order of step (1) (S110) and step (2) (S120) may be reversed.

Each step will be described in detail below with reference to FIGS. 5 to 7.

(Step S110)
First, the support member 110 is installed around the cylindrical structure 1 . Each support member 110 may have a configuration as shown in FIG. 2 described above. Each support member 110 is installed on the outer peripheral surface 5 of the cylindrical structure 1 by welding.

The support member 110 is welded to the cylindrical structure 1 such that one side surface 116 contacts the outer peripheral surface of the cylindrical structure 1 .

A plurality of support members 110 are installed along the outer peripheral surface of the cylindrical structure 1 at a predetermined height level. Typically, there are multiple height levels at which the support member 110 is installed. For example, all necessary support members 110 may be installed from the top to the bottom of the cylindrical structure 1 before starting disassembly.

When the support members 110 are installed at multiple height levels of the cylindrical structure 1, the height intervals may range from 5 m to 30 m, for example.

Note that the uppermost support member 110 may be installed at the tip of the cylindrical structure 1 or the top of the steel tower 20.

FIG. 5 schematically shows a state in which the support member 110 is installed around the cylindrical structure 1 at a certain height level.

In the example shown in FIG. 5, twelve support members 110 are installed on the outer peripheral surface 5 of the cylindrical structure 1 at equal intervals. However, the number of support members 110 to be installed is appropriately selected depending on the dimensions of the outer peripheral surface 5 of the cylindrical structure 1.

Typically, at each height level, the support members 110 are installed at intervals of 0.3 m to 1 m from each other along the circumferential direction.

(Step S120)
Next, the first member 141A and the second member 141B for the plurality of scaffolding brackets 140 are prepared. The scaffolding bracket 140 may have a configuration as shown in FIG. 3 described above.

Next, the second diagonal member 148 is attached to the second diagonal member 141 by bolts passing through the elongated holes 162 of the first diagonal member 148 in the first member 141A and the second through holes 164 of the second diagonal member 152 in the second member 141B. 152 is connected to the first diagonal member 148.

Since the first diagonal member 148 has an elongated hole 162, when joining the first diagonal member 148 and the second diagonal member 152, it is possible to change the position of the bolt in the elongated hole 162. , integral diagonal members having various overall lengths can be constructed.

Note that, at this stage, it is often the case that the total length required for the integrated diagonal member is unknown. In such a case, the positions of the bolts may be temporarily determined and the first diagonal member 148 and the second diagonal member 152 may be temporarily fastened.

Through the above steps, a scaffolding bracket 140 having an integrated diagonal member is obtained.

(Step S130)
Next, the scaffolding bracket 140 is fixed to the support member 110 using the bolt holes 125 of the support member 110.

When attaching the scaffolding bracket 140 to the support member 110, the first through hole 160 formed in the first end 142 of the horizontal member 144 of the scaffolding bracket 140 and the corresponding bolt hole 125 of the support member 110 are A bolt is inserted so as to pass through both, with the two facing each other. Further, by attaching a nut to the tip of the bolt, the scaffolding bracket 140 and the support member 110 are bolted together.

Thereby, the scaffolding bracket 140 is attached to the support member 110, and the scaffolding bracket 140 can be supported by the support member 110.

Through the above steps, a scaffold installation device is constructed.

FIG. 6 schematically shows a state in which the scaffolding bracket 140 is attached to the support member 110 to form a scaffolding installation device.

As shown in FIG. 6, as a result of mounting the scaffolding bracket 140 using the bolts 170, the horizontal members 144 of the scaffolding bracket 140 may protrude radially from the outer peripheral surface 5 of the cylindrical structure 1.

Here, as described above, at the stage of assembling the scaffolding bracket 140 in step S120, the total length of the integrated diagonal member may not be determined. Therefore, immediately before step S130, the first diagonal member 148 and the second diagonal member 152 may be in a temporarily fastened state.

In such a case, in this step S130, the bolts may be loosened once, the position of the second diagonal member 152 relative to the first diagonal member 148 is changed, and then both may be permanently fastened with the bolt.

This allows the integrated diagonal member of the scaffolding bracket 140 to be adjusted to a predetermined length.

Further, the abutment member 155 of the scaffold bracket 140 can be brought into contact with the outer peripheral surface 5 of the cylindrical structure 1, thereby stabilizing the scaffold installation device.

Note that, for example, when the abutting member 155 is connected to the second diagonal member 152 by a bolt inserted into a bolt hole 156, the abutting member 155 can be rotated about the bolt hole 156. That is, the abutment member 155 can be inclined with respect to the extension axis of the second diagonal member 152. Therefore, in such a configuration, the distal end surface of the abutment member 155 can reliably abut against the outer peripheral surface 5 of the cylindrical structure 1 .

(Step S140)
Next, a scaffolding member is installed on the horizontal member 144 of the scaffolding bracket 140, and the scaffolding is constructed by interconnecting the scaffolding members.

The structure and shape of the scaffolding member are not particularly limited. The scaffolding member may be, for example, an aluminum flooring. For example, a scaffold may be constructed by spanning flooring over the horizontal member 144.

FIG. 7 schematically shows a state in which a flooring material 180 is installed on the horizontal member 144 of the scaffolding bracket 140. By installing the flooring material 180 on the horizontal member 144, a donut-shaped scaffold 185 can be configured over the outer circumferential surface 5 of the cylindrical structure 1.

In the example shown in FIG. 7, the scaffolding 185 is constructed by combining two types of flooring materials 180. However, the scaffold 185 may be configured using more types of floor materials 180.

Scaffolding 185 may further include posts and/or handrails (not shown).

Through the above steps, the scaffold 185 can be installed at a predetermined height level of the cylindrical structure 1.

Here, in the first method, the scaffold 185 can be constructed without using a conventional steel band. In the first installation method, there is no need to connect the band parts to each other, and the scaffold 185 can be installed more efficiently.

Furthermore, in the first method, the scaffolding bracket 140 is fastened to the support member 110 using bolts 170. Therefore, the used scaffolding bracket 140 can be easily recovered by removing the bolt 170. Therefore, the scaffolding bracket 140 can be reused.

Note that the diameter of the outer periphery of the cylindrical structure 1 is not necessarily uniform along the height direction.

That is, in the cylindrical structure 1, the diameter of the outer periphery changes depending on the height level, and as a result, an area (unique area) where the diameter of the outer periphery is narrower or wider than other parts may occur along the vertical direction. .

If the first device is provided in such a "unique area", a problem may arise in that the horizontal member 144 of the scaffold bracket 140 becomes non-horizontal, making it difficult to set up a horizontal scaffold.

However, in the first device, as described above, the overall length of the integrated diagonal made of the first diagonal 148 and the second diagonal 152 can be adjusted to a desired dimension.

In this case, even in a unique region where the diameter of the outer peripheral surface 5 of the cylindrical structure 1 is different from other parts, the horizontal member 144 of the scaffold bracket 140 can be arranged in the horizontal direction. Therefore, the scaffold 185 built on the scaffold bracket 140 can be leveled.

This effect will be explained in detail below with reference to FIGS. 8 to 10.

8 to 10 schematically show aspects of the first device installed on various outer circumferential surfaces 5 of the cylindrical structure 1.

FIG. 8 schematically shows a scaffolding bracket 140 installed at a location where the outer peripheral surface 5 of the cylindrical structure 1 extends in the vertical direction. Further, FIG. 9 schematically shows a scaffolding bracket 140 installed at a location where the outer circumferential surface 5 of the cylindrical structure 1 is inclined by +θ (to the left) with respect to the vertical direction. Furthermore, FIG. 10 schematically shows a scaffolding bracket 140 installed at a location where the outer circumferential surface 5 of the cylindrical structure 1 is inclined by −θ (to the right) with respect to the vertical direction.

In both figures, the scaffolding bracket 140 is fastened to the support member 110 with bolts 170.

As shown in FIG. 8, when the outer peripheral surface 5 of the cylindrical structure 1 extends in the vertical direction, the second diagonal member 152 is inserted into the long hole 162 (not shown) of the first diagonal member 148. It is coupled to the first diagonal member 148 by a bolt 172 located at a first location. This constitutes an integrated diagonal member 159.

The integrated diagonal member 159 has a first overall length L1, and the abutting member 155 at the end of the second diagonal member 152 is exactly in contact with the outer peripheral surface 5 of the cylindrical structure 1. As a result, the horizontal member 144 of the scaffolding bracket 140 can be arranged horizontally.

Next, in the example shown in FIG. 9, the scaffolding bracket 140 is placed in a unique region where the diameter of the outer circumferential surface 5 of the cylindrical structure 1 is larger than other locations.

When the scaffolding bracket 140 is installed at a location where the outer peripheral surface 5 of the cylindrical structure 1 is inclined by +θ with respect to the vertical direction, the second diagonal member 152 is connected to the elongated hole of the first diagonal member 148. 162 (not shown) is coupled to the first diagonal 148 by a bolt 172 located at a second location. This constitutes an integrated diagonal member 159.

The second location where the bolt 172 is installed is located closer to the second end 143 of the horizontal member 144 than the first location shown in FIG. Therefore, the integrated diagonal member 159 has a second overall length L2 that is shorter than the first overall length L1 described above.

In this case as well, the abutment member 155 at the end of the second diagonal member 152 is exactly abutted against the outer circumferential surface 5 of the cylindrical structure 1 . As a result, the horizontal member 144 of the scaffolding bracket 140 can be arranged horizontally.

Next, in the example shown in FIG. 10, the scaffolding bracket 140 is placed in a specific region where the diameter of the outer circumferential surface 5 of the cylindrical structure 1 is smaller than other locations.

When the scaffolding bracket 140 is installed at a location where the outer peripheral surface 5 of the cylindrical structure 1 is inclined by −θ with respect to the vertical direction, the second diagonal member 152 is It is coupled to the first diagonal 148 by a bolt 172 located at a third location in the hole 162 (not shown). This constitutes an integrated diagonal member 159.

The third location where the bolt 172 is installed is located further from the second end 143 of the horizontal member 144 than the first location shown in FIG. Therefore, the integrated diagonal member 159 has a third overall length L3 that is longer than the first overall length L1 described above.

In this case as well, the abutment member 155 at the end of the second diagonal member 152 is exactly abutted against the outer circumferential surface 5 of the cylindrical structure 1 . As a result, the horizontal member 144 of the scaffolding bracket 140 can be arranged horizontally.

In this way, with the first device, a horizontal scaffold 185 can be constructed on the scaffold bracket 140 even in a unique region where the diameter of the outer periphery of the cylindrical structure 1 is different from other locations.

(Another method of installing a scaffold using a scaffold installation device according to an embodiment of the present invention)
Next, with reference to FIG. 11, another method for constructing a scaffold around a cylindrical structure using a scaffold installation device according to an embodiment of the present invention will be described.

FIG. 11 schematically shows the flow of another method for constructing a scaffold (hereinafter referred to as "second method").

As shown in FIG. 11, the second method is
(1) A step of welding a plurality of support members along the periphery of the cylindrical structure at a predetermined height position of the cylindrical structure, each support member having a bolt hole ( S210) and
(2) A step of preparing a plurality of first members and second members for the scaffold bracket,
The first member has a horizontal member having a first through hole at one end, and a first diagonal member connected to another end of the horizontal member,
the second member has a second diagonal;
the first diagonal member has a long hole extending along the extending direction of the first diagonal member, and the second diagonal member has a second through hole (S220); ,
(3) A step of fastening the first member for the scaffold bracket and the corresponding support member with bolts passed through the first through hole and the bolt hole, whereby the cylindrical a step (S230) in which the horizontal member protrudes radially from the periphery of the structure;
(4) fastening the first diagonal member and the second diagonal member using bolts passing through the second through hole of the second diagonal member and the elongated hole of the first diagonal member; , completing a scaffolding bracket with a single diagonal having a desired overall length (S240);
(5) installing a scaffolding member using the horizontal member of the scaffolding bracket (S250);
has.

Note that in the second method as well, the order of step S210 in (1) and step S220 in (2) may be reversed.

Here, step S210 of (1) and step S250 of (5) in the second method are respectively similar to step S110 of (1) and step S140 of (4) in the first method.

Therefore, steps S220 in (2) to S240 in (4) will be described here.

(Step S220)
In the second method, unlike the first method described above, the scaffolding bracket 140 is completed in step S240 of (4).

That is, in the second method, only the first member 141A for the scaffold bracket 140 is fixed to the support member 110 in step S230 of (3).

Thereafter, in step S240 of (4), the second diagonal member 152 in the second member 141B for the scaffold bracket 140 is integrated with the first diagonal member 148 in the first member 141A, and the integrated diagonal member 159 A scaffolding bracket 140 having the following is obtained.

In the second method, after attaching the first member 141A to the support member 110, the integrated diagonal member 159 is constructed, and the scaffolding bracket 140 is completed at this stage.

With this method, there is no need to know the entire length of the integrated diagonal member 159 in advance, and the integration of the first diagonal member 148 and the second diagonal member 152 can be completed in one operation (for example, by bolting). There is an effect that it can be done.

(About the method of dismantling the cylindrical structure 1)
The scaffold 185 constructed as described above may be used to dismantle the cylindrical structure 1.

The cylindrical structure 1 may be dismantled as follows.

First, support members 110 and scaffolding brackets 140 are installed at all necessary height levels on the outer peripheral surface of the cylindrical structure 1, and all scaffolds 185 are constructed.

Next, a worker stands on the first scaffold, which is usually located at the top, and cuts the cylindrical structure 1 across the outer circumferential surface 5 at the first height position. The cut first portion of the cylindrical structure 1 is suspended to the ground by a crane.

Next, the cylindrical structure 1 is cut at the second height position by a worker standing on the second scaffold using the same method. The cut second portion is suspended to the ground by a crane.

The cylindrical structure 1 may be disassembled by repeating such steps.

Alternatively, first, the support member 110 and the scaffolding bracket 140 are installed at one height level on the upper outer peripheral surface of the cylindrical structure 1, and the first scaffolding 185 is configured at the first height level.

Next, a worker stands on the first scaffold 185, and the worker cuts the cylindrical structure 1 across the outer circumferential surface 5 at the first height position. The cut first portion of the cylindrical structure 1 is suspended to the ground by a crane.

A second scaffold 185 is then constructed at a second height level in a similar manner. Further, the cylindrical structure 1 is cut across the outer circumferential surface 5 at the second height position by a worker standing on the second scaffold 185. The cut second portion of the cylindrical structure 1 is suspended to the ground by a crane.

The cylindrical structure 1 may be disassembled by repeating such steps.

In addition, when the steel tower 20 exists around the cylindrical structure 1 as shown in FIG. 2, the cylindrical structure 1 is dismantled simultaneously with the steel tower 20.

Therefore, scaffolding is also constructed around the steel tower 20. The scaffolding for this tower 20 may be configured in any manner.

The method for installing a scaffold according to an embodiment of the present invention has been described above. However, one embodiment of the present invention is not limited to the above aspect.

For example, in the above example, a steel chimney is assumed as the cylindrical structure 1, but the cylindrical structure 1 may be a building such as a tower.

Further, the scaffold 185 does not necessarily need to be used only for dismantling the cylindrical structure 1; for example, the scaffold 185 can also be used when painting or repairing the cylindrical structure 1.

Furthermore, the configuration of support member 110 and scaffolding bracket 140 shown is merely exemplary. Scaffolding bracket 140 may have any configuration as long as it can be bolted to support member 110 and the overall length of the integrated diagonal member can be adjusted.

Various other changes are also possible.

1 Cylindrical structure 5 Outer surface 20 Steel tower 110 Support member 112 First main surface 114 Second main surface 116 Side surface 125 Bolt hole 140 Scaffolding bracket 141A First member 141B Second member 142 First end 143 Second end 144 Horizontal member 146 Vertical member 148 First diagonal member 152 Second diagonal member 155 Abutting member 156 Bolt hole 159 Integrated diagonal member 160 First through hole 162 Elongated hole 164 Second through hole 170 bolts 172 bolts 180 flooring 185 scaffolding

Claims (12)

A scaffolding installation device used when installing scaffolding around a cylindrical structure,
a support member welded to the outer peripheral surface of the cylindrical structure;
scaffolding bracket,
has
The support member has a bolt hole,
The scaffolding bracket has a horizontal member having a first through hole at one end, a first diagonal member connected to another end of the horizontal member, and a second diagonal member,
The first diagonal member has a long hole extending along the extending direction of the first diagonal member, and the second diagonal member has a second through hole,
The scaffold bracket is connected to the support member by fastening with a bolt passing through a first through hole of the scaffold bracket and the bolt hole of the support member,
The first diagonal member and the second diagonal member are fastened with bolts passing through the second through hole and the elongated hole to form a single diagonal member whose entire length can be adjusted. The scaffold installation device according to claim 1, wherein the support member has a plate-like or block-like form. The second diagonal member of the scaffold bracket has an abutment member that comes into contact with an outer peripheral surface of the cylindrical structure at an end opposite to an end connected to the first diagonal member. Scaffold installation device according to item 1 or 2. The scaffold installation device according to claim 1 or 2, wherein the scaffold bracket further includes a vertical member that fixes the horizontal member and the first diagonal member. The scaffold installation device according to claim 1 or 2, wherein the horizontal member of the scaffold bracket projects radially from the periphery of the cylindrical structure by fastening the support member and the scaffold bracket. The scaffold installation device according to claim 1 or 2, wherein the cylindrical structure is a steel chimney with a height of 60 m or more. A method of installing scaffolding around a cylindrical structure,
(1) A step of welding a plurality of support members along the periphery of the cylindrical structure at a predetermined height position of the cylindrical structure, each support member having a bolt hole; ,
(2) A step of preparing multiple scaffolding brackets,
The scaffolding bracket has a first member and a second member,
The first member has a horizontal member having a first through hole at one end, and a first diagonal member connected to another end of the horizontal member,
the second member has a second diagonal;
The first diagonal member has a long hole extending along the extending direction of the first diagonal member, the second diagonal member has a second through hole, and the second diagonal member has a second through hole, and the second diagonal member has a second through hole. The diagonal member and the second diagonal member are fastened with bolts passing through the elongated hole and the second through hole to form a single diagonal member, and a scaffold bracket having the single diagonal member is obtained. ,
(3) A step of fastening the scaffold bracket and the corresponding support member with bolts passed through the first through hole and the bolt hole, whereby the the horizontal members of the scaffolding bracket are radially projected;
(4) installing a scaffolding member using the horizontal member of the scaffolding bracket;
has
A method in which the step (1) and the step (2) are performed in any order. In the step (2), the first diagonal material and the second diagonal material are temporarily fastened, and during the step (3), the first diagonal material and the second diagonal material are permanently fastened. 8. The method of claim 7, wherein a single diagonal of the desired length is obtained. The method according to claim 7 or 8, wherein the support member has a plate-like or block-like form. The second member has an abutting member that comes into contact with the outer peripheral surface of the cylindrical structure at an end opposite to an end of the second diagonal member that is connected to the first diagonal member. , the method according to claim 7 or 8. The method according to claim 7 or 8, wherein the cylindrical structure is a steel chimney with a height of 60 m or more. A method of installing scaffolding around a cylindrical structure,
(1) A step of welding a plurality of support members along the periphery of the cylindrical structure at a predetermined height position of the cylindrical structure, each support member having a bolt hole; ,
(2) A step of preparing a plurality of first members and second members for the scaffold bracket,
The first member has a horizontal member having a first through hole at one end, and a first diagonal member connected to another end of the horizontal member,
the second member has a second diagonal;
The first diagonal member has a long hole extending along the extending direction of the first diagonal member, and the second diagonal member has a second through hole;
(3) A step of fastening the first member for the scaffold bracket and the corresponding support member with bolts passed through the first through hole and the bolt hole, whereby the cylindrical the horizontal member protrudes radially from the periphery of the structure;
(4) fastening the first diagonal member and the second diagonal member using bolts passing through the second through hole of the second diagonal member and the elongated hole of the first diagonal member; , completing a scaffolding bracket having a single diagonal having a desired overall length;
(5) installing a scaffolding member using the horizontal member of the scaffolding bracket;
has
A method in which the step (1) and the step (2) are performed in any order.

Images