JPH0318580Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a handrail for preventing falls of scaffolding stairs at construction sites, which prevents scaffolds installed at construction sites from falling from the openings of the stairs.

Scaffolding installed at construction sites has stairs connecting to each floor, and since scaffolding boards cannot be laid in the areas corresponding to these stairs, these areas become openings, which can cause damage to workers and workers. Accidents such as materials falling from openings occurred.

Therefore, handrails are installed around such openings, but because the pipes that make up the scaffolding are attached with various parts such as scaffolding boards, there is little space to install and support the handrails, and the places where they need to be installed are different. Since there are a large number of them corresponding to the staircase part, the installation work requires a lot of effort.

In view of such drawbacks, the present invention provides a handrail for preventing falls on scaffolding stairs at a construction site, in which the handrail body is intersected and latched between the ends of the short rods forming both ends of the opening corresponding to the stairs built on the scaffolding. Extend the end of the main frame attached to the short rod on the upper side to the front side of the lower side, fix a vertical rod to the end of the main frame vertically, and horizontally move the lower end of the vertical rod to the lower side. The side frame is rotatably supported on the vertical lever, and the lower end of the side frame is attached to the short lever when rotated toward the opening. A relief part is provided at the side corner, and a triangular plate corresponding to the relief part is attached between the side frame and the lower part of the upright rod so that it can be raised and lowered freely through a pin, and a side plate is attached to the upright rod through a collar. It is an object of the present invention to solve the above-mentioned drawbacks by providing a handrail for preventing falling of scaffolding stairs at a construction site, which is rotatable integrally with the frame and covers the relief part by folding the plate toward the relief part. An embodiment of the present invention will be described below based on the drawings. 1 is a scaffold at a construction site, and 1 is an opposing scaffold.
Pairs of columns 2, 2a are erected at predetermined intervals, horizontal bars 3, 3a are connected to the columns 2, 2a in a crosswise manner, and short bars 4 are connected between the front and rear horizontal bars 3, 3a facing each other. , 4a..., and between each floor there are stairs 5, 5 corresponding to approximately 2/3 of the width of the short rods 4, 4a...
A... is erected in an inclined manner, and scaffolding boards 7, 7a... are fitted and placed between the short rods 4, 4a... at each step except for the openings 6 corresponding to the erection points of the stairs 5, 5a... It's forcing me.

8 is a handrail body attached to each opening 6;
It consists of a main frame 9 and a side frame 10, each of which is a bent pipe body. A passing section 14 is formed by extending horizontally from the mounting section 12 toward the lower side 13 by a width that allows a worker coming up the stairs 5, 5a, etc. It is raised diagonally upward to a safe height, and extends horizontally to the rear to form an end 15 in front of the lower side 13, to which a vertical rod 16 is fixed vertically. Incidentally, reference numeral 17 denotes an auxiliary rod interposed between the inclined portion of the main frame 9 and the vertical rod 16.

Further, the lower end of the vertical rod 16 extends horizontally toward the lower side 13, and an attachment portion 18 to the short rod 4a on the lower side 13 is formed at the end.

Attachment parts 12, 1 formed at both ends of the main frame 9
8 is composed of a ∩-shaped fitting piece 19 that fits into the short rods 4, 4a and a triangular plate-shaped wedge body 20, and the fitting piece 19
The main frame 9 is fixed to the short rods 4, 4a by inserting the wedges 20 into holes 21, 21a which are provided through holes 21, 21a corresponding to the wedges 20 at opposing positions on both sides of the lower part. In addition, the side frame 10 allows the pipe body to be bent into a square shape, and the auxiliary rod 2 is inserted from the intermediate position.
The end of the auxiliary rod 22 and the upper end of the side frame 10 are rotatably attached to the vertical rod 16 of the main frame 9 via collars 23, 23a, and the lower end of the side frame 10 A clamp 24 for attachment to the short rod 4a is fixed to the portion.

In addition, the side frame 10 has a vertical rod 16 as shown in FIG.
The clamp 24 is fixed to the short rod 4a with the clamp 24 rotated 45 degrees toward the opening 6 about the center, and a triangular relief part 25 is provided at the corner of the lower side 13 of the opening 6. are doing.

26 is a plate corresponding to the relief part 25;
A punching metal 28 is stretched in an outer frame 27 made of a pipe body, and this plate 26 is attached between the side frame 10 and the lower part of the upright rod 16 via pins 29, 29a so that it can rise and fall freely. Similarly to the side frame 10, the plate 26 can be rotated integrally with the side frame 10 via a collar 30, and by lowering the plate 26 toward the relief part 25, the relief part 25 can be covered. are doing.

In short, the present invention can be used at a construction site where the handrail body 8 is interposed between the ends of the short rods 4, 4a that constitute both ends of the opening 6 corresponding to the stairs 5, 5a... built on the scaffolding 1. In the scaffold stair fall prevention handrail, the end 15 of the main frame 9 attached to the short rod 4 on the upper side 11 is extended to the front position of the lower side 13, and the standing rod 16 is fixed to the end 15 of the main frame 9. At the same time, the lower end of the upright rod 16 extends horizontally to the lower side 13 and is attached to the short rod 4a, and the side frame 10 is rotatably supported on the upright rod 16 and rotated toward the opening 6 side. Since the lower end of the side frame 10 is attached to the short rod 4a while the main frame 10 is being moved, and a relief portion 25 is provided at the lower corner of the opening 6, the main frame 9 and the side frame 10 are supported at three points. This allows the handrail main body 8 to be stably attached even in a narrow space, thereby preventing accidents of falling from the opening 6 and improving safety during work on the scaffold 1. A triangular plate 26 corresponding to 25 is attached between the side frame 10 and the lower part of the upright rod 16 via pins 29, 29a so that it can rise and fall freely, and is attached to the side frame 10 through a collar 30 to the upright rod 16. Since the plate 26 can be rotated integrally and covers the relief part 25 by falling down toward the relief part 25, the plate 26 allows the relief part 25 to be covered by the relief part 25 when the scaffold is originally narrow. Like the plates 7, 7a..., it becomes a passable part and can widen the scaffolding area, and the attachment parts 12, 18 of the main frame 9 to the short rods 4, 4a are attached to the short rods 4, 4a.
It consists of a ∩-shaped fitting piece 19 that fits into the fitting piece 19, and a wedge body 20 that is inserted through the fitting piece 19, and the attachment part of the side frame 10 to the short rod 4a is made of a clamp 24, so it can be used in narrow spaces. It can be easily attached to the
Its practical effects are great, such as the fact that it can be done with a single touch since it only involves inserting and removing the 0.

[Brief explanation of the drawing]

The figure shows one embodiment of the present invention.
The figure is a front view of the scaffold stair fall prevention handrail at a construction site according to the present invention, Figure 2 is a plan view of the same in the installed state, Figure 3 is a perspective view of the mounting part, Figure 4 is a front view of the foot end, FIG. 5 is a plan view of the same as above. 1...Scaffolding, 4,4a...Short rod, 5,5a...Stairs,
6...Opening portion, 9...Main frame, 10...Side frame, 13...Lower side, 16...Standing rod, 25...Escape portion, 26...Plate.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) Preventing scaffolding stairs from falling at construction sites where the handrail body is intersected and latched between the ends of short rods forming both ends of the opening corresponding to the stairs built on the scaffolding. In the handrail, the end of the main frame attached to the short rod on the upper tier extends to the front position on the lower tier, and a standing rod is fixed vertically to the end of the main frame, and the lower end of the vertical rod is attached to the lower tier. Extends horizontally to the side and attaches to the short rod,
In addition, the side frame is rotatably supported on the vertical rod, and
With the lower end of the side frame rotated toward the opening, attach it to the short rod to provide a relief at the lower corner of the opening, and attach a triangular plate corresponding to the relief to the side frame and the vertical rod. It is attached between the lower part of the plate via a pin so that it can be raised and lowered freely, and the plate can be rotated integrally with the side frame via a collar, and by lowering this plate toward the relief part side, the relief part can be raised and lowered. A handrail for preventing falls on scaffolding stairs at a construction site, characterized in that a part of the handrail is covered. (2) The attachment part of the main frame to the short rod consists of a ∩-shaped fitting piece that fits into the short rod and a wedge inserted through the fitting piece, and the attachment part of the side frame to the short rod consists of a clamp. A handrail for preventing falls on scaffolding stairs at a construction site as set forth in claim 1 of the utility model registration claim, characterized in that the handrail is constructed of: