Climbing scaffold

Abstract

To provide a climbing scaffold capable of providing a movable temporary scaffold on the outer side of a structure and moving a scaffold for performing work on the inner side upward.SOLUTION: A climbing scaffold 1 is moved upward by lifting a scaffold mounting frame body 11 having a length extending over a plurality of floors of a building M. The scaffold is provided with: a pair of opening / closing type scaffold plates 21 rotatably mounted to the scaffold mounting frame body at intervals in a horizontal direction; a diagonal member part 22 detachably connecting an overhanging edge of the opening / closing type scaffold plate facing an interior side MB of the building and the scaffold mounting frame body, below the opening / closing type scaffold plate; and bridge plates 23, 24 passed between the opening / closing type scaffold plates. Here, a thickness of the opening / closing type scaffold plate when housed is set to be smaller than a gap between the building and the scaffold mounting frame body.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a climbing scaffold that is moved upward by lifting a scaffold mounting frame.

Background Art

[0002] As disclosed in Patent Documents 1 and 2, there is known a climbing scaffold that can slide upward and is used for constructing the outer wall surface of a building such as a super high-rise building. This climbing scaffold lifts and moves a temporary scaffold upward as the building rises.

[0003] On the other hand, as disclosed in Patent Documents 3 and 4, there is known a hanging scaffold device (registered trademark: column stage) that is fixed to a hook of a column that is erected in advance. By using this hanging scaffold device, work such as welding or bolting of beam members to column members inside the building from the outer wall surface of the building, and welding of column members to each other can be performed.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Patent Document 3

Patent Document 4

Summary of the Invention

Problems to be Solved by the Invention

[0005] Here, in the case of a climbing scaffold, for the work on the outer side of the building, with a temporary scaffold that moves upward as the building rises, even for high-rise buildings, the work can be carried out efficiently. However, for a suspended scaffold device fixed to the column materials used for the work on the inner side, if the floor construction does not progress to a height at which the suspended scaffold device can be removed even after the work is completed, it cannot be removed.

[0006] Therefore, an object of the present invention is to provide a climbing scaffold that can provide a movable temporary scaffold on the outer side of a building and can also move the scaffold for the work on the inner side upward.

Means for Solving the Problems

[0007] To achieve the above object, the climbing scaffold of the present invention includes a scaffold mounting frame having a rail portion extending in the vertical direction with a length spanning a plurality of floors of a building, and a support device that projects outward from different heights of the building and detachably supports the scaffold mounting frame. The climbing scaffold moves upward by lifting the scaffold mounting frame, and includes a pair of opening and closing scaffold plates rotatably attached to the scaffold mounting frame at intervals in the horizontal direction, a diagonal member portion that detachably connects the overhanging edge portion of the opening and closing scaffold plate facing the inside of the building and the scaffold mounting frame below the opening and closing scaffold plate, and a bridging plate spanned between the opening and closing scaffold plates. The thickness of the opening and closing scaffold plate when stored is smaller than the gap between the building and the scaffold mounting frame secured by the support device.

[0008] Here, it can be configured to include a handrail portion that is detachable from the opening and closing scaffold plate. Also, the pair of opening and closing scaffold plates can be configured to be arranged sandwiching the column material of the building when deployed, and the bridging plate can also be arranged on both sides sandwiching the column material. Further, a plurality of sets of the pair of opening and closing scaffold plates, diagonal member portions, and bridging plates can be arranged at intervals in the height direction with respect to the scaffold mounting frame.

Effects of the Invention

[0009] The climbing scaffold of the present invention configured as described above includes a pair of opening / closing scaffold boards rotatably attached to a scaffold attachment frame, and a detachable diagonal member portion that supports the opening / closing scaffold boards from below. And the thickness when the opening / closing scaffold boards are stored is set to be smaller than the gap between the structure secured by the support device and the scaffold attachment frame.

[0010] Therefore, when moving the climbing scaffold upward, by storing the opening / closing scaffold boards, it can be moved upward without contacting the structure. In this way, if the scaffold for performing the work on the inner side can also be moved upward, there is no need to uselessly install the suspended scaffold device after the work is completed, and costs such as lease fees can be reduced. Also, since the work of removing the suspended scaffold device becomes unnecessary, the construction period can be shortened.

Brief Description of the Drawings

[0011]

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Embodiments for Carrying Out the Invention

[0012] Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an explanatory view showing an overview of the climbing scaffold 1 of the present embodiment.

[0013] The climbing scaffold 1 of the present embodiment is used as a scaffold when constructing a building M such as a high-rise building that becomes a structure. The climbing scaffold 1 lifts and moves upward a temporary scaffold 3 (see FIG. 5) for constructing the outer wall surface of a building M such as a super high-rise building from the outside side MA as the building M rises.

[0014] As shown in FIG. 1, the building M described in the present embodiment first raises column materials M1 made of, for example, square steel pipes, and then welds the end faces of beam materials M2 made of, for example, H-shaped steels to the sides of the column materials M1. Near the boundary between the outside side MA and the inside side MB of the building M, an outer edge material M4 is arranged in parallel with the beam material M2, and a floor material M3 is laid on the upper surfaces of the beam material M2 and the outer edge material M4.

[0015] The temporary scaffold 3 arranged on the outside side MA along the outer wall surface position of the building M is, for example, a wedge-fastening type scaffold, and a box-shaped or lattice-shaped framework is constructed by a plurality of steel pipe columns arranged at predetermined intervals and horizontal members connecting between the columns, and various members such as handrails, tread boards, and stairs are attached.

[0016] The temporary scaffold 3 is assembled to a height spanning multiple floors of the building M and can be moved upward after the work on the outer side MA of the building M is completed by being fixed to the climbing scaffold 1.

[0017] FIG. 1 is a side view of the climbing scaffold 1 that supports the temporary scaffold 3. This climbing scaffold 1 extends in the vertical direction with a length spanning multiple floors of the building M. Although not shown here, the temporary scaffold 3 is attached to the outer side MA of the climbing scaffold 1 (see FIG. 5).

[0018] Since the line “FL” shown in FIG. 1 indicates the height of the floor surface of each floor of the building M, it can be said that the length of this climbing scaffold 1 is a length spanning two or more floors of the building M. In this way, the climbing scaffold 1 includes a scaffold attachment frame body 11 that extends in the vertical direction with a length spanning multiple floors of the building M, and a support device 12 (see FIGS. 3 and 4) that projects from different heights (floors) of the building M toward the outer side MA and detachably supports the scaffold attachment frame body 11.

[0019] The climbing scaffold 1 is connected to the columns on the inner side MB of the temporary scaffold 3. For example, as shown in FIG. 5, the temporary scaffold 3 is supported by a plurality of climbing scaffolds 1 arranged at intervals in the horizontal direction along the wall surface position of the building M.

[0020] FIG. 2 is a front view for explaining the configuration of the scaffold attachment frame body 11 of the climbing scaffold 1. FIG. 3 is a plan view for explaining the arrangement relationship between the column member M1, the support device 12, and the scaffold attachment frame body 11. Further, FIG. 4 is an explanatory view showing an enlarged view of the range surrounded by the dashed-dotted line in FIG. 3.

[0021] The scaffold attachment frame body 11 of the climbing scaffold 1 to which the temporary scaffold 3 is attached includes a rail portion 111 of substantially the same length at the center in the width direction as shown in FIG. 2. The rail portion 111 is supported by a rail support frame 113 as shown in FIG. 3, and the rail support frame 113 is fixed to the scaffold attachment frame body 11.

[0022] As shown in FIGS. 2 and 3, the scaffold mounting frame body 11 is assembled into a rectangular parallelepiped-shaped skeleton by columns 114 arranged at corner portions, horizontal connecting members 115 connecting between the columns 114, and reinforcing members 117 such as cross braces. A curing sheet 51 is stretched on the outer periphery of the scaffold mounting frame body 11, and a suspension element 14 such as a long shackle is provided at the upper end of the column 114.

[0023] And at the center of the rectangular parallelepiped-shaped scaffold mounting frame body 11, a rail support frame 113 assembled into a rectangular parallelepiped shape by columns and horizontal members is fixed. The rail portion 111 attached to this rail support frame 113 has a ladder-like configuration in which the backs of a pair of channel steels are opposed to each other in a spaced-apart parallel state and are connected by a plurality of rail girders 112, as shown in FIG. 4.

[0024] The rail girders 112 of the rail portion 111 are arranged at equal intervals in the vertical direction at a predetermined pitch. This pitch is set to be shorter than the interval between the floor on which the support device 12 is arranged and the adjacent other floor.

[0025] And the support device 12 is supported by a protruding piece 13 attached to the side surface of the column member M1, as shown in FIG. 3. For example, a protruding piece 13 that protrudes to the outer side MA by welding or the like is fixed to the side surface of the column member M1 at a height corresponding to each floor of the building M, and the support device 12 is attached to the protruding piece 13.

[0026] The support device 12 includes a pair of guide rollers 121, as shown in FIG. 4. These guide rollers 121 are in contact with the inner peripheral surface of the rail portion 111 having a U-shaped cross section and rotate when the rail portion 111 moves up and down. That is, since the rail portion 111 is in a state of being moored by the guide rollers 121, it is possible to suppress the variation in which the scaffold mounting frame body 11 separates from the outer side MA of the building M during vertical movement.

[0027] Further, the support device 12 includes a main support body 122 that is rotatably supported by a support shaft. The main support body 122 is set such that its upper end side inclines at the center of gravity because the support shaft supports it near the lower end. A recess 122a for fitting the rail girder 112 is provided at the upper end of the main support body 122. By accommodating the rail girder 112 in the recess 122a, the movement of the rail portion 111 and the scaffold mounting frame body 11 fixed thereto downward is restricted and supported.

[0028] On the other hand, when the scaffold mounting frame body 11 including the rail portion 111 moves upward by being lifted, the rail girder 112 accommodated in the recess 122a of the main support body 122 can move upward without being restricted. That is, the scaffold mounting frame body 11 is detachably supported by the support device 12 that projects outward MA from different heights of the building M.

[0029] After the rail girder 112 supported by the recess 122a of the main support body 122 moves upward, the rail girder 112 positioned below it interferes with the lower side of the tip of the main support body 122, so that the main support body 122 rotates upward and restores after the rail girder 112 passes. That is, when the rail girder 112 located above the recess 122a descends, it becomes a state where it can be accommodated and supported in the recess 122a. Details of the relationship between the support device 12 and the rail portion 111 are described in Patent Document 1 (Japanese Patent No. 7304018).

[0030] FIG. 5 is a plan view for explaining the arrangement relationship between the climbing scaffold 1 and the temporary scaffold 3. A plurality of climbing scaffolds 1 configured as described above are arranged at intervals in the horizontal direction along the position of the outer wall surface of the building M, and a temporary scaffold 3 is attached to the outside MA with respect to these climbing scaffolds 1. For example, when the three climbing scaffolds 1 shown in FIG. 5 are simultaneously moved upward, the temporary scaffold 3 supported by them also moves upward.

[0031] On the inner side MB of the building M of the climbing scaffold 1, a spring-down scaffold 2 is attached. FIGS. 6-9 are explanatory diagrams for explaining the configuration of the spring-down scaffold 2. FIG. 6 is a side view for explaining the configuration of the openable and closable spring-down scaffold 2.

[0032] As shown in FIG. 6, the spring-down scaffold 2 includes a pair of openable and closable scaffold plates 21 rotatably attached to a scaffold attachment frame body 11, a diagonal member 22 detachably connecting the overhanging edge of the openable and closable scaffold plate 21 and the scaffold attachment frame body 11 below the openable and closable scaffold plate 21, cross plates 23 and 24 spanned between the openable and closable scaffold plates 21, and a handrail part 25 detachably attached to the openable and closable scaffold plate 21.

[0033] The openable and closable scaffold plate 21 is a rectangular plate-like or panel-like member as shown in the plan view of FIG. 9 and is formed of a metal plate such as aluminum. A hook device 4 is attached to at least one end of the openable and closable scaffold plate 21.

[0034] As shown in FIG. 7(a), the hook device 4 includes a hook body 41 formed to be rotatable with respect to a shaft member (116), and a lock member 42 having a lever for preventing the hook body 41 from coming off when the hook body 41 is fitted to the shaft member (116).

[0035] The lock member 42 is configured to be able to insert and remove the lever while receiving the biasing force of a spring (not shown) built in the base. When the lever is pulled to hook the hook body 41 to the shaft member (116), the lock is automatically engaged and the hook device 4 cannot be detached from the shaft member. When removing the hook device 4, the lock of the lock member 42 is released by pulling the lever, and the hook body 41 can be pulled away from the shaft member. Details of the hook device 4 are described in Japanese Patent No. 4641201.

[0036] As shown in FIG. 11, a plurality of such hook devices 4 are attached at intervals in the width direction of the openable and closable scaffold board 21. Then, as shown in FIG. 6, when the hook device 4 is hooked onto the columnar attachment member 116 fixed horizontally to the scaffold attachment frame body 11, the openable and closable scaffold board 21 can be rotated about the attachment member 116.

[0037] On the other hand, a shaft member 211 oriented in the width direction is attached to the lower surface side of the overhanging edge of the openable and closable scaffold board 21. Then, the shaft member 211 and another attachment member 116 arranged below the attachment member 116 to which the hook device 4 of the openable and closable scaffold board 21 is hooked are connected by a diagonal member 22.

[0038] FIG. 7 is a diagram for explaining the configuration of the diagonal member 22. FIG. 7(a) is a side view with an enlarged end, and FIG. 7(b) is a front view with an enlarged end. As shown in FIG. 7(b), the diagonal member 22 is formed in a ladder shape by a pair of parallel frame members 221, 221 and a cross member 222 connecting between the frame members 221, 221.

[0039] In addition, hook devices 4 are attached to both ends of each frame member 221 in the same manner as the openable and closable scaffold board 21. Then, as shown in FIG. 6, the hook device 4 on the upper end side of the frame member 221 is hooked onto the shaft member 211 of the openable and closable scaffold board 21, and the hook device 4 on the lower end side of the frame member 221 is hooked onto the attachment member 116 fixed horizontally to the scaffold attachment frame body 11. In short, the collapsible outrigger scaffold 2 during deployment is supported by a triangular truss structure formed by the openable and closable scaffold board 21, the diagonal member 22, and the scaffold attachment frame body 11.

[0040] A handrail 25 is detachably attached to the outer edge side of the openable and closable scaffold board 21 by an eyebolt 252 or the like. A chain 251 is stretched between the handrails 25, 25 attached at intervals.

[0041] FIG. 8 is an explanatory view of the retractable scaffold 2 as seen from the outside MA of the building M. As shown in this figure, a pair of opening / closing scaffold boards 21 are arranged at intervals in the horizontal direction. And, bridging boards 23 and 24 are bridged between the opening / closing scaffold boards 21, 21. The bridging boards 23 and 24 are configured to be slidable and have an adjustable length, and are made of a metal plate such as aluminum into a rectangular plate shape or panel shape.

[0042] FIG. 9 is a plan view for explaining the configuration of the retractable scaffold 2 arranged so as to surround the column member M1. As shown in this figure, when the retractable scaffold 2 is deployed, a pair of opening / closing scaffold boards 21, 21 are arranged with the column member M1 of the building M sandwiched therebetween, and the bridging boards 23, 24 are also arranged on both sides sandwiching the column member M1. Specifically, the bridging board 23 is bridged between the edges of the opening / closing scaffold board 21 on the inner side MB from the column member M1, and the bridging board 24 is bridged between the edges of the opening / closing scaffold board 21 on the outer side MA from the column member M1.

[0043] By providing the scaffolds such as the opening / closing scaffold boards 21 and the bridging boards 23, 24 so as to surround the column member M1 in this way, it becomes possible to perform joining operations such as welding of the beam member M2 to the column member M1, bolt tightening, welding operations between the upper and lower column members M1, M1, etc. In short, the work around the column member M1 on the inner side MB from the outer wall surface position of the building M can be constructed using the deployed retractable scaffold 2 as a scaffold.

[0044] When the climbing scaffold 1 is fixed without performing lifting or the like, the outer edge member M4 of the building M and the scaffold mounting frame body 11 are connected by the wall connecting member 52. Also, a vertical sheet 53 is stretched between the outer edge member M4 and the scaffold mounting frame body 11.

[0045] Next, the operations performed when lifting the climbing scaffold 1 of the present embodiment will be described with reference to FIGS. 10 - 13.

[0046] Figure 10 is an explanatory diagram schematically showing the operation of removing the handrail portion 25 of the bounce-down scaffold 2. First, remove the chain 251 (see FIGS. 6 and 8) spanned between the handrail portions 25, 25. At this stage, for the upper floor, the welding work between the column member M1 and the beam member M2 has been completed, and for the lower floor, since the floor member M3 is installed on the beam member M2, a worker standing on the floor of the lower floor can receive and remove the removed handrail portion 25. Also, remove the wall connecting member 52 and the like within the reach from the bounce-down scaffold 2.

[0047] Figure 11 is a plan view for explaining the operation when storing the opening / closing scaffold board 21. Before storing the opening / closing scaffold board 21, remove the transfer boards 23, 24 and the diagonal member portion 22 spanned between the opening / closing scaffold boards 21, 21. The removed handrail portion 25, diagonal member portion 22, etc. are separately carried upward and reinstalled during the operation of deploying the bounce-down scaffold 2.

[0048] Then, as shown in FIG. 12, the worker on the floor of the lower floor rotates the opening / closing scaffold board 21 around the mounting member 116 to hang it downward. Also, remove and hang down the wall connecting member 52 within the reach from the floor.

[0049] Figure 13 is an explanatory diagram showing the situation when the climbing scaffold 1 is lifted. The lifting is performed after hooking the hook at the tip of the crane to the hanging point 14 connected to the upper end of the scaffold mounting frame 11.

[0050] As described above, since the rail portion 111 of the scaffold mounting frame 11 engages with the guide roller 121 of the support device 12 protruding from the inner side MB of the building M, the gap between the outer edge member M4 and the scaffold mounting frame 11 is maintained at a substantially constant width. Therefore, set the thickness when storing the opening / closing scaffold board 21 and the wall connecting member 52 to be smaller than this gap.

[0051] By doing so, when moving the climbing scaffold 1 upward along with the completion of the work on the outer side MA and the inner side MB of the building M, the opening and closing scaffold boards 21 and the wall connecting members 52 will not come into contact with the outer edge member M4 and interfere with each other, and the temporary scaffold 3 and the spring-down scaffold 2 can be efficiently moved upward.

[0052] Here, the number of spring-down scaffolds 2 attached to the climbing scaffold 1 is not particularly limited. As shown in FIG. 1, the spring-down scaffolds 2 can be provided respectively at the lower positions of the beam members M2 of multiple floors. Also, the position in the height direction where the spring-down scaffold 2 is attached can be arbitrarily set regardless of the position of the beam member M2.

[0053] Next, the operation of the climbing scaffold 1 of the present embodiment will be described. The climbing scaffold 1 of the present embodiment configured as described above includes a pair of opening and closing scaffold boards 21 rotatably attached to the scaffold attachment frame 11, and a detachable diagonal member portion 22 that supports the opening and closing scaffold boards 21 from below.

[0054] And the thickness of the opening and closing scaffold board 21 when stored is set to be smaller than the gap between the building M secured by the support device 12 and the scaffold attachment frame 11. For this reason, when moving the climbing scaffold 1 upward, by rotating and storing the opening and closing scaffold board 21, it can be moved upward without contacting the outer edge member M4, the floor member M3, etc. of the building M.

[0055] In this way, if the scaffold (spring-down scaffold 2) for performing the work on the inner side MB of the building M can also be efficiently moved upward, there is no need to wastefully install the suspended scaffold device until the floor is laid and can be removed after the work is completed, and costs such as lease fees can be reduced.

[0056] In addition, the climbing scaffold 1 can quickly move the temporary scaffold 3 and the spring-down scaffold 2 upward, and the work of removing the suspended scaffold device becomes unnecessary, so the construction period can also be shortened.

[0057] As described above, the embodiments of the present invention have been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and design changes that do not deviate from the gist of the present invention are included in the present invention.

[0058] For example, in the above embodiment, the scaffold mounting frame 11 and the support device 12 are described by taking the configuration disclosed in Patent Document 1 as an example. However, the present invention is not limited thereto, and even if it is called by another name such as a sliding scaffold, as long as it has a configuration that moves the scaffold upward by lifting, the present invention can be applied.

Explanation of Reference Numerals

[0059] 1: Climbing Scaffold 11: Scaffold Mounting Frame 111: Rail Portion 12: Support Device 21: Openable and Closable Scaffold Board 22: Diagonal Member Portion 23, 24: Transfer Board 25: Handrail Portion M: Building (Structure) MA: External Side MB: Internal Side

Claims

1. A scaffolding mounting frame having a rail portion extending vertically over a plurality of floors of a structure, and a support device that projects outward from different heights of the structure and detachably supports the scaffolding mounting frame, the climbing scaffold being configured to move upward by lifting the scaffolding mounting frame, A pair of opening and closing scaffold boards rotatably attached to the scaffolding mounting frame at intervals in the horizontal direction, A diagonal member portion detachably connecting the overhanging edge of the opening and closing scaffold board facing the inside of the structure and the scaffolding mounting frame below the opening and closing scaffold board, And a bridging board spanned between the opening and closing scaffold boards, The climbing scaffold, wherein the thickness of the opening and closing scaffold board when stored is smaller than the gap between the structure and the scaffolding mounting frame secured by the support device.

2. The climbing scaffold according to claim 1, further comprising a handrail portion detachably attached to the opening and closing scaffold board.

3. The climbing scaffold according to claim 1 or 2, wherein the pair of opening and closing scaffold boards are arranged sandwiching the column member of the structure when deployed, and the bridging board is also arranged on both sides sandwiching the column member.

4. The climbing scaffold according to claim 1 or 2, wherein a plurality of sets of the pair of opening and closing scaffold boards, diagonal member portions and bridging boards are arranged at intervals in the height direction with respect to the scaffolding mounting frame.

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