JPH0539672A - Drop preventing structure and drop preventing method for scaffold - Google Patents

Abstract

PURPOSE:To prevent the dropping of a worker and roofing tiles and prevent the scattering of a spraying material. CONSTITUTION:A flexible vertical sheet material 11 and a horizontal sheet material 12 are connected to form a drop preventing sheet 1, and multiple brattice brackets B are fitted to a scaffold main body A1 at the proper interval. Horizontal support bars 2 are provided between stanchions A2 of the scaffold main body A1 and between the brattice brackets B, and both the upper and lower end sections and connection sections of the drop preventing sheet 1 are fitted to the horizontal support bars 2. The drop preventing sheet 1 is stretched into an L-shape on the scaffold main body A1 and the brattice brackets B.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a scaffold fall prevention structure and a fall prevention method used in construction sites such as general houses.

[0002]

2. Description of the Related Art In a conventional scaffold fall prevention structure, as shown in FIG. 10, a mesh sheet 10 is provided outside a scaffold body 10a.
It was constructed by stretching b. However, with such a configuration,
Although it is possible to prevent the spraying material from scattering, there is a problem that it is not very useful for preventing the worker or the roof tile from falling.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and it is an object of the present invention to provide a fall prevention structure for a scaffold and a fall prevention structure capable of preventing an operator or a roof tile from falling. It is to provide a prevention method.

[0004]

In order to achieve the above object, the scaffold fall prevention structure according to claim 1 is provided with a fall prevention sheet by combining a flexible vertical sheet material and a transverse sheet material. On the other hand, a plurality of overhang brackets are attached to the scaffold body at appropriate intervals, and horizontal support bars are installed between the columns of the scaffold body and between the overhang brackets. And a coupling portion is attached, and the fall prevention sheet is configured to be stretched in an L shape on the scaffold body and the overhang bracket.

The scaffold fall prevention method according to claim 2 is
A plurality of overhanging brackets are attached to the scaffolding body at appropriate intervals, then horizontal support bars are installed between the columns of the scaffolding body and between the overhanging brackets, and then each horizontal support bar has flexible fall prevention. It is characterized in that the fall prevention sheet is stretched in an L-shape by attaching the upper and lower end portions and the intermediate portion of the sheet.

[0006]

According to the configuration of the present invention, the lateral sheet material of the fall prevention sheet can be projected from the scaffolding body to the side of the building by using the overhang bracket, and therefore, the worker or the like falls from the roof or the like. Also, it is possible to prevent the vertical sheet from jumping out of the scaffolding, or the horizontal sheet to prevent falling.

Further, since the fall prevention sheet is supported by the horizontal support bar, the support structure can be made strong.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a scaffold fall prevention structure of the present invention will be described below with reference to the drawings. The one-sided scaffold A is configured by attaching an overhanging bracket B to the scaffold body A1.
As shown in FIG. 4, the overhang bracket B is composed of a horizontal member B1 made of a large-diameter pipe, a diagonal member B2 made of a small-diameter pipe, and a vertical member B3. Attachments B4 and B5 are attached to the front end and the base end of the horizontal member B1, respectively, and the attachment B4 is attached to the building A2 to project the overhanging bracket B from the scaffold body A1 toward the building 100. I am trying. Although the fixtures B4, B5 are shown as having a clamp structure in the drawing, it goes without saying that the design can be changed appropriately to various structures such as a wedge type structure.

Reference numeral 1 denotes a fall prevention sheet made of a flexible mesh material, which is constituted by integrating a vertical sheet material 11 and a horizontal sheet material 12. The upper and lower ends of the fall prevention sheet 1, the vertical sheet material 11 and the horizontal sheet material 12
Cylindrical support bar attachment portions 13, 14, 15 are formed in the joint portion of the above along the entire length of the fall prevention sheet 1.
The material of the fall prevention sheet 1 is not limited to the mesh.

Reference numeral 2 is a horizontal support bar made of a metal pipe for supporting the fall prevention sheet 1. Flat portions 21 are provided at both ends of the horizontal support bar 2, and insertion holes 22 are formed in these flat portions 21. Has been done.

Reference numeral 4 denotes a locking tool attached to the overhanging bracket 3. The locking tool 4 is constructed by attaching a hook-shaped projection 4b to the outer peripheral surface of the short body 4a, and the inside of the projection 4b. A retaining member 4c is provided on the protrusion, and the retaining member 4c is biased by a spring in the protruding direction. The locking tool 4 configured in this way is held by the mounting tool B5 at the tip of the overhang bracket 3. The locking tool 4 may be directly fixed to the tip of the overhang bracket 3 without using a clamp.

The locking tool 5 is constructed by attaching a hook 5b to a mounting portion 5a. A retaining member 5c is provided on the inner side of the hook-shaped protrusion 5b, and the retaining member 5c is biased by a spring in the protruding direction. The locking tool 5 is attached to the building (support) A2 of the one-sided scaffolding body A1. The mounting portion 5a of the locking tool 5 shows a clamp structure in the drawing, but the structure is not particularly limited, and the design can be changed to various structures such as a wedge mounting structure. Of course.

Next, the mounting operation of the fall prevention sheet 1 will be described. First, the plurality of overhanging brackets B and the locking portions 5 are attached near the roof of the building A2 of the scaffolding body A1 (FIG. 3). Next, each support bar mounting portion 13 of the fall prevention sheet 1,
Insert horizontal support bar 2 into 14 and 15 to insert horizontal support bar 2
Both ends of the are projected from the support bar attachment portion 13 (FIG. 3).

Next, the insertion hole 22 of the flat portion 21 of the horizontal support bar 2 is hooked on the projections 4b, 4b of the locking members 4, 5 (FIG. 5), between the building sites A2 of the scaffolding body A1 and between the overhanging brackets B. The horizontal support bar 2 is installed on the. This allows
The fall prevention sheet 1 is stretched in an L shape on the scaffold A (FIG. 1).

As described above, according to the scaffold fall prevention structure of the present invention, the fall prevention sheet 1 can be stretched using the conventional overhang bracket and the scaffold body as they are. Moreover, since the horizontal support bar 2 can be easily attached and detached with the locking members 4 and 5, the work of stretching the fall prevention sheet 1 is facilitated.

FIGS. 6 and 7 show an application example of the locks 4 and 5, in which the projections 4b and 5b of the locks 4 and 5 are formed by straight rods. In addition, the protrusion 4b (5b) is the locking member 4
A pair of right and left may be attached to (5), and the end of the horizontal support bar 2 may be hooked on each protrusion 4b (5b).

8 and 9 show a second embodiment of the scaffold fall prevention structure according to the present invention, which is constituted by a dedicated member for attaching the fall prevention sheet 1. That is,
Fixtures 7a, 7b, 7c for fixing the horizontal support bar 2 are attached to both ends and the bent portion of the L-shaped frame 6, and the back of the vertical frame 6a of the L-shaped frame 6 is fixed to the building A2. The fixing tool 8 is attached. Fixture 7a,
Although 7b, 7c, and 8 show a clamp structure in the drawing, the structure is not particularly limited, and may be a structure that is attached in a wedge manner, for example.

Therefore, the horizontal support bar 2 is attached to the building A2 via the L-shaped frame 6.

[0019]

As is apparent from the above description, according to the configuration of the present invention, the lateral sheet material of the fall prevention sheet can be extended inward from the scaffolding body, so that an operator or the like falls from the roof or the like. Even so, it can be received by the fall prevention sheet, and safety can be improved. Also,
Since the horizontal support bar is supported on the fall prevention sheet,
The supporting state becomes strong, and the safety can be further improved.

[0020]

[Brief description of drawings]

FIG. 1 is a perspective view showing a first embodiment of a scaffold fall prevention structure according to the present invention.

FIG. 2 is a side sectional view showing a first embodiment of the scaffold fall prevention structure of the same.

FIG. 3 is a perspective view showing an assembling operation of the scaffold fall prevention structure of the same.

FIG. 4 is a perspective view of an overhanging bracket used in the scaffold fall prevention structure of the same.

FIG. 5 is a perspective view showing an attaching operation of the horizontal support bar of the above.

FIG. 6 is a perspective view showing an application example of the same locking device.

FIG. 7 is a perspective view showing an application example of the same locking tool.

FIG. 8 is a perspective view showing a second embodiment of the scaffold fall prevention structure according to the present invention.

FIG. 9 is a side sectional view showing a second embodiment of the scaffold fall prevention structure of the same.

FIG. 10 is a perspective view showing a conventional example.

[Explanation of symbols]

 A1 ... Scaffolding body B ... Overhang bracket 1 ... Fall prevention sheet 11 ... Vertical sheet material 12 ... Horizontal sheet material 2 ... Horizontal support bar

Claims (2)

[Claims] A flexible vertical sheet material and a horizontal sheet material are combined to form a fall prevention sheet, and a plurality of overhanging brackets are attached to the scaffold body at appropriate intervals, and between the pillars of the scaffold body. And install horizontal support bars between the overhang brackets, and attach the upper and lower end portions of the fall prevention sheet and the joints to these horizontal support bars so that the fall prevention sheet is extended in an L shape on the scaffold body and the overhang bracket. Scaffold fall prevention structure characterized by being configured. 2. A plurality of overhang brackets are attached to the scaffold body at appropriate intervals, and then horizontal support bars are installed between the columns of the scaffold body and between the overhang brackets, and then each horizontal support bar is flexible. A fall prevention method for a scaffold, characterized in that the fall prevention sheet is stretched in an L-shape by attaching upper and lower end portions and a middle portion of the fall prevention sheet having elasticity.