JPH0683841U - Structure of doorway frame scaffolding - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent the falling and falling of the building frame during the assembly / disassembly work of the entrance / exit frame scaffolding. A beam frame 6 is bridged over an upper portion of a support frame that is framed at a predetermined interval, and a base frame 7 is externally fitted and held at a predetermined interval in the longitudinal direction of the beam frame 6 by an anti-rotation tool 13. The rotation of the base frame 7 with respect to the beam frame 6 is prevented, the scaffolding plates are installed on the adjacent base frames 7, 7, the building frames are erected on the base frame 7, and the building frames are connected by the reinforcing brace. An entrance is formed between the support frame and the beam frame 6.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a structure of an entrance / exit frame scaffold that forms an entrance / exit by a framework scaffold at a work site.

[0002]

[Prior art]

 In the case of constructing an entrance / exit frame scaffolding as described above, conventionally, a beam frame is bridged over the upper part of a support frame that is framed at a predetermined interval, and a base frame is also spaced at a predetermined interval in the longitudinal direction of the beam frame. The outer frame is fitted and held, the scaffolding boards are installed on the adjacent base frames, the building frames are erected on the base frames, and the building frames are connected by the reinforcing braces to form an entrance / exit between the support frame and the beam frame. Is forming. And dismantling is performed by the reverse procedure.

[0003]

[Problems to be solved by the device]

 However, during the assembly work, before connecting the building frames with the reinforcing brace, and during the dismantling work, after removing the reinforcing brace from the building frame, the base frame rotates with respect to the beam frame, respectively. Along with that, the construction frame fell over unexpectedly and sometimes dropped with the scaffolding plate, which was a drawback of low safety.

The present invention has been made in view of the above circumstances, and an object of the present invention is to prevent falling and falling of a building frame during assembly / disassembly work of a doorway frame scaffolding. To do.

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention bridges a beam frame over the upper part of a supporting frame that is framed at a predetermined interval, and at the same time, installs a base frame at a predetermined interval in the longitudinal direction of the beam frame. It is fitted and held, the scaffolding plate is installed on the adjacent base frames, the building frames are erected on the base frames, and the building frames are connected by the reinforcing braces to form the entrance and exit between the support frame and the beam frame. In the structure of the entrance / exit frame scaffolding, the base frame shall be equipped with a rotation prevention tool for the beam frame.

[0006]

[Action]

 According to the configuration of the structure of the entrance / exit frame scaffolding according to the present invention, during the assembly work, when the base frame is externally fitted and held at a predetermined interval in the longitudinal direction of the beam frame, the rotation prevention tool prevents the base frame from the beam frame. The building frame can be erected on the base frame with the rotation of the frame blocked. On the other hand, during the dismantling work, the rotation preventing tool can keep the rotation of the base frame with respect to the beam frame blocked until the building frame is removed from the base frame.

[0007]

【Example】

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

FIG. 1 is an overall schematic front view showing an embodiment of the structure of an entrance / exit frame scaffold according to the present invention, in which first gate-shaped building frames 1, 1 are installed in parallel, and the first building frames 1, 1 are arranged above them. The scaffolding board 2 is erected, and the first building frames 1 and 1 are reinforced and connected by the first reinforcing brace 3, and they are vertically stacked in three stages, and the supporting frames 4 are framed at predetermined intervals. Has been done.

As shown in the perspective view of the main part of FIG. 2, a ladder-shaped beam frame 6 is extended across the upper portions of the support frames 4 and 4 via a metal fitting 5 fitted and held on the upper portion of the first building frame 1. In addition to being bridged, base frames 7, 7 are externally fitted and held over both beam frames 6, 6 at predetermined intervals in the longitudinal direction.

As shown in the side view of the main part of FIG. 3, locking members 8 for externally fitting and locking the upper frame 6 a of the beam frame 6 are integrally connected to both ends of the base frame 7 in the longitudinal direction by welding. At the same time, a bracket 10 to which a nut 9 is welded is integrally connected to each of the locking members 8 by welding, and a butterfly bolt 11 is screwed to the nut 9 and a butterfly is attached to the bracket 10. A recess 12 into which the tip of the bolt 11 is fitted is formed, and the locking member 8 is fitted and locked on the upper frame 6a of the beam frame 6 to hold the base frame 7 on the beam frames 6 and 6, and then the butterfly The rotation preventing tool 13 is configured to prevent the base frame 7 from rotating with respect to the beam frame 6 by tightening the bolt 11.

As shown in the perspective view of the main part of FIG. 4, second scaffolding plates 14 ... Are laid across the upper parts of the first building frames 1, 1 constituting the support frames 4, 4 and the base frames 7, 7. Further, as shown in the perspective view of the main part of FIG. 5, the second building frame 15 is attached to the upper part of the first building frames 1, 1 and the base frames 7, 7 which form the support frames 4, 4. ... are erected, and the adjacent second building frames 15, 15 are connected to each other via the second reinforcing brace 16.

With the above configuration, the base frame 7 is prevented from rotating with respect to the beam frame 6, and the base frame 7 is maintained in the standing posture even before the second reinforcing braces 16 are connected during the assembly work. In this state, the second building frame 15 can be fitted and held upright and can be erected. In the dismantling work, the base frame 7 can be maintained in the standing posture even after the second reinforcing brace 16 ... Is removed. In this state, the second building frame 15 can be fitted and held, and the second building frame 15 can be reliably prevented from falling or falling.

In the above embodiment, the rotation preventing tool 13 is constituted by the butterfly bolt 11. However, for example, an angle member is attached to the bracket 10 so as to be rotatable around a vertical axis, and is attached to the beam frame 6. By rotating the angle member after the fitting and holding, various structures can be adopted such that the horizontal portion thereof is positioned below the upper frame 6a of the beam frame 6.

[0014]

[Effect of device]

 As described above, according to the structure of the entrance / exit frame scaffold of the present invention, the rotation of the base frame with respect to the beam frame is prevented by the rotation preventing tool during both the assembly work and the disassembly work. Even when the is not connected, the building frame can be maintained in a standing posture, and it can be prevented from falling and falling, improving safety.

[Brief description of drawings]

FIG. 1 is an overall schematic front view showing an embodiment of the structure of a doorway frame scaffold according to the present invention.

FIG. 2 is a perspective view of a main part.

FIG. 3 is a side view of a main part.

FIG. 4 is a perspective view of a main part.

FIG. 5 is a perspective view of a main part.

[Explanation of symbols]

 4 ... Support frame 6 ... Beam frame 7 ... Base frame 13 ... Anti-rotation tool 14 ... Second scaffolding plate 15 ... Second building frame 16 ... Second reinforcing brace

Claims (1)

[Scope of utility model registration request] 1. A scaffold is mounted on an adjacent base frame while the beam frame is bridged over an upper portion of a support frame that is framed at a predetermined interval, and the base frame is externally fitted and held at a predetermined interval in the longitudinal direction of the beam frame. With a structure of a doorway frame scaffolding in which a board is erected, a building frame is erected on the base frame, and the building frames are connected by a reinforcing brace to form a doorway between the support frame and the beam frame. A structure for an entrance / exit frame scaffold, characterized in that the base frame is provided with an anti-rotation tool for the beam frame.