JPH06307073A - Frame scaffold - Google Patents

Abstract

(57) [Abstract] [Purpose] The handrail can be installed in advance, and since this handrail can be used as it is as a bracing, the safety of work is improved and the use of a safety belt for workers is unnecessary. . [Structure] In a frame scaffolding in which the building frames 1 are connected to each other by a cloth plate 2 that hangs the ends of the building frames 1 and cross braces 3, the cross braces 3 center the intersection overlapping portions of the bars 3a.
And each bar 3a is provided with a bendable portion below the insertion position of the center ring 15, and the building frame 1
The conversion metal fitting 9 for vertically supporting the end portion of the bar 3a is attached to and detached from the building material 1a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a frame scaffold as a temporary material used in construction sites of construction and civil engineering.

[0002]

2. Description of the Related Art As is well known, as shown in FIG. 9, in a frame scaffold, torii-type and gate-type building frames 1 are juxtaposed at appropriate intervals, and the building frames 1 are connected to each other by a cloth board (scaffold board) 2 and braces. Connected with 3.

More specifically, the building frame 1 is integrally constructed of left and right building materials 1a made of steel pipes and a horizontal material 1b made of steel pipes connecting them at the upper end, and the cloth plate 2 is hooked at the ends (not shown). No.) is hung between the horizontal members 1b of the building frames 1 arranged side by side.

Further, the building material 1a of the building frame 1 has locking projections projecting from the side portions thereof, and the braces 3 are bars having through holes into which the locking projections are inserted. By hooking the ends on the locking projections, the braces 3 are hung on the side surfaces between the building frames 1 arranged opposite to each other.

Not only a single bar combination is attached to the braces 3, but two bars are axially attached to each other at the center,
There is also a cross streak that is pre-assembled into an X shape.

Further, the building frames 1 are not only laterally arranged at intervals, but also the building material 1 is provided with connecting pins for inserting the ends thereof.
By combining the upper and lower ends of a, the height is increased by stacking in the vertical direction, and accordingly, the cloth plate 2 serving as a work passage also forms a floor of a plurality of floors.

[0007]

By the way, such a frame scaffold is very dangerous because there is no fall prevention device on the side of the cloth plate 2 on the uppermost floor during assembly or disassembly.

Therefore, a method of separately setting up the master rope support 4 and passing the master rope 5 to this is also taken, but it is troublesome because of a large number of members and work. Moreover, the use of the safety belt is an absolute requirement, and the work efficiency is poor if it is restrained by the lifeline hung on the master rope 5.

The object of the present invention is to eliminate the inconveniences of the above-mentioned conventional example, to provide a handrail in advance, and since the handrail can be used as a bracing as it is, the safety of the work is improved and the worker's safety is improved. It is to provide a framed scaffold that eliminates the need to use safety belts.

[0010]

In order to achieve the above-mentioned object, the present invention is directed to a frame scaffold for connecting the building frames with a cloth plate for hanging the ends of the building frames and the cross bars, and the cross bars are bars. The intersecting overlapped portions are restrained by a center ring, and each bar has a bendable portion below the insertion position of the center ring, and the bar ends are vertically supported by the building material of the building frame. Attaching and detaching the diversion metal fitting, and the bendable part of the bar is composed of the mutual shaft attachment part and the sliding sheath tube surrounding it. Furthermore, the diversion metal fitting is built in the lower part of the plate whose upper part is bifurcated. The gist is that a clamp metal fitting for connecting the frame to the building material is provided, and the locking projections at the end of the bar and the clamp metal fitting at the position above it are provided on the vertical line at each upper branch portion. Is.

[0011]

According to the present invention, prior to the addition of the upper building frame, the diversion metal fitting is attached to the building material of the building frame of the floor so that the bar end is vertically supported and the bar is Refract at a right angle on the way. The two horizontal bars bent at right angles are overlapped with each other so that the two bars stand upright as a U-shaped handrail.

After adding the building frames of the upper stage, each bar is extended in a straight line, and the bars are set again between the building frames as cross streaks.

[0013]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a front view showing an embodiment of the frame scaffolding of the present invention in the case of using the handrail.

In the frame scaffold of the present invention, as in the conventional example shown in FIG. 9, the building frames 1 are juxtaposed at appropriate intervals, and the building frames 1 are connected to each other by a cloth board (scaffold board) 2 and braces 3. Are the same.

First, the diversion metal fitting 9 which is detachably attached to the building material 1a of the building frame 1 will be described. As shown in FIGS. 3 and 4, the building frame 1 is formed below the plate body 10 whose upper part is bifurcated.
The clamp metal fitting 11 for connecting to the building material 1a is provided.
In this clamp hardware 11, a curved plate 11b whose end portion is rotatable by a hinge 11a is opposed to form a semicircular ring body.
The tip superposed plate 11b was tightened with a thumbscrew 11c.

On each branch 10a on the upper part of the plate body 10, a locking projection 12 to be inserted into the through hole 8 at the end of the bar 3a constituting the braces 3 and a clamp metal piece 13 located above the locking projection 12 are arranged on a vertical line. Set up in. This locking projection 12 is a building material 1 of a building frame 1 described later.
The locking projection 7 is equivalent to the locking projection 7 projecting from the side of a, and the locking projection 12 may have a built-in gravity lock which is a projecting and retracting piece.

Further, the clamp metal piece 13 is configured such that a tip end superposed plate of a semicircular curved plate 11b whose base end is rotatable by a hinge 13a is fastened to the surface of the plate body 10 by a butterfly screw 11c.

Further, a hook-shaped guide metal member 14 hooked from the plate member 10 to the outer periphery of the horizontal member 1b of the building frame 1 is provided at a lower portion of the plate member 10 of the diversion metal fitting 9 and slightly above the clamp metal member 11.

Next, the bracing 3 will be described with reference to FIG.
As shown in FIG. 2, the above-mentioned or later-described locking projections 7,
Two bars 3a each having a through hole 8 into which 12 is inserted are combined, and the intersecting overlapping portions of the bars 3a are surrounded by a center ring 15 to be restrained. In that case, each bar 3a is slidable with respect to the inserted center ring 15, and a stopper 16 formed by a projection is provided on the peripheral surface of one bar 3a.
Is provided.

Further, each bar 3a is provided with a shaft attachment portion 17 which is connected to each other by a pin below the insertion position of the center ring 15, and a sliding sheath tube 18 surrounding the shaft attachment portion 17 is provided.
Are fitted on the outer circumference of the bar 3a, and these shaft-attached portions 17 and sliding sheath tubes 18
The refractable portion is constituted by and.

In this case, one bar 3a near the shaft mounting portion 17 is provided with a protruding stopper 19a to prevent the sliding sheath tube 18 surrounding the shaft mounting portion 17 from moving further, and another bar 3a. One bar 3a is provided with a protrusion-like stopper 19b so that the sliding sheath tube 18 that has moved so as to come off the shaft attachment portion 17 does not move further.

Explaining the method of use next, as shown in FIG. 8, first, in the assembly work floor of the scaffold, the diversion metal fitting 9 is attached before the cloth plate 2 which becomes the work floor of the top floor is attached. As shown in FIGS. 3 and 4, the diversion metal fitting 9 has a plate body 10 attached to an upper portion of the building material 1a of the building frame 1 by a clamp hardware 11.

Then, the bar 3 of the bracing 3 is attached to the conversion metal fitting 9.
The end a is attached so that the locking projection 12 is inserted into the through hole 8 and the upper part thereof is fixed by the clamp metal piece 13 so as to be held vertically. It is deviated from the shaft mounting portion 17 and is bent at a right angle at the shaft mounting portion 17 as shown in FIG.

The two bars 3a have a center ring 15
Since the bars 3a are mutually restrained by, the horizontal portions beyond the bent portions are overlapped as shown in FIG. 1 to form a U-shaped handrail as a whole.

A cloth board 2 is attached, and a climbing facility (not shown) such as stairs is used to climb to the top floor, and the building frame 1 is used for the upper floor building frame 1.
Add more. In this replenishment, the connecting pin 20 at the upper end of the building material 1a of the building frame 1 has branching portions at the upper portion of the plate body 10 of the diverting metal fitting 9.
Since it is located between 10a, it can be performed without the diversion metal fitting 9 and the bar 3a as the handrail being in the way.

While assembling the building frame 1 in this way, or after the assembly is completed, the end portion of the bar 3a is removed from the diversion metal fitting 9 and locked to the locking projection 7 side of the building frame 1, and the bar 3a is As shown in FIG. 6, it is straight by the shaft attachment part 17 and is surrounded by the sliding sheath pipe 18 so as not to be bent, and as an X-shaped cross bar as shown in FIG. Deploy.

The above is the procedure for assembling the scaffold, but in the case of disassembling, the reverse procedure may be performed to change from the state of the X-shaped cross braces to the U-shaped handrail to ensure safety.

[0028]

As described above, the frame scaffold of the present invention is
Since the handrail can be provided in advance and the handrail can be used as a bracing as it is, the safety of the work is improved and the use of the safety belt for the worker is unnecessary.

[Brief description of drawings]

FIG. 1 shows an embodiment of the frame scaffold of the present invention, and is a front view in the case where the handrail is in use.

FIG. 2 shows an embodiment of the frame scaffolding of the present invention, and is a front view in the case of using braces.

FIG. 3 is a perspective view showing an installed state of a diversion metal fitting.

FIG. 4 is a side view showing an installed state of a diversion metal fitting.

FIG. 5 is a front view showing a refraction state of a refractable portion of a brace bar.

FIG. 6 is a front view showing a straight stretchable state of a bendable portion of a brace bar.

FIG. 7 is a front view of an intersection of bracing bars.

FIG. 8 is a perspective view showing an assembled state of the frame scaffold of the present invention.

FIG. 9 is a perspective view showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Building frame 1a ... Building material 1b ... Horizontal material 2 ... Cloth plate 3 ... Struts 3a ... Bar 4 ... Parent rope 5 ... Parent rope 6 ... Reinforcing material 7 ... Locking protrusion 8 ... Through hole 9 ... Diversion metal fitting 10 ... Plate 10a ... Branch 11 ... Clamping hardware 11a ... Hinges 11b ... Curved plate 11c ... Thumbscrew 12 ... Locking protrusion 13 ... Clamping hardware 13a ... Hinges 13b ... Curved plate 13c ... Butterfly screws 14 ... Guide hardware 15 ... Center Ring 16 ... Stopper 17 ... Shaft attachment part 18 ... Sliding sheath tube 19a, 19b ... Stopper 20 ... Connecting pin

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Masashige Yoneda 1-15-7 Matsushima, Edogawa-ku, Tokyo Edogawa Koki Co., Ltd.

Claims (3)

[Claims] 1. In a frame scaffolding in which building frames are connected to each other by a cloth plate that hangs ends of the building frames and cross braces, the cross braces restrain the intersecting overlapping portions of the bars with a centering ring, and The bar is a frame scaffolding characterized in that a bendable part is provided below the position where the bar is inserted into the center ring, and a diversion metal fitting that vertically supports the bar end is attached to and detached from the building material of the building frame. 2. The frame scaffold according to claim 1, wherein the bendable portion of the bar is constituted by a mutual shaft attachment portion and a sliding sheath tube surrounding the mutual attachment portion. 3. The diversion metal fitting is provided with a clamp metal fitting for coupling a building frame to a building material at a lower portion of a plate whose upper portion is bifurcated, and locking projections at bar ends at respective branch portions of the upper portion. The clamp metal fitting at the upper position is provided on a vertical line.
And the frame scaffold according to claim 2.