JP2670740B2 - Framework scaffolding - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art As is well known, in frame scaffolding, torii-type and gate-type building frames 1 are juxtaposed at appropriate intervals as shown in FIG. 9, 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.

[0004] Further, the building material 1a of the building frame 1 has a locking projection protruding from a side portion thereof, and the brace 3 is a bar having a through hole at an end for inserting the locking projection. By attaching the ends to the locking projections, the struts 3 are bridged on the side surfaces between the mutually adjacent building frames 1.

[0005] In addition, not only a combination of a single bar but also two bars are pivotally attached to the center of the brace 3 at the center.
There are also cross struts pre-assembled in an X shape.

[0006] Further, the building frames 1 are not only arranged side by side at intervals, but also connected by connecting pins whose ends are inserted.
By connecting 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 framework scaffold is very dangerous because the top floor at the time of assembling or disassembling has nothing to prevent it from dropping beside the cloth plate 2.

[0008] Therefore, a method has been proposed in which the master rope support 4 is separately set up and the master rope 5 is handed over, but the number of members and operations are increased, which is troublesome. 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. Each bar is constrained by a center ring, and each bar is provided with a bendable part below the position constrained by this center ring. A clamp metal fitting for connecting the building frame to the building material is provided, and the diversion metal fittings with the locking projections at the bar end and the clamp metal fittings above it on the vertical line are detachable at each branch at the top In addition to the above structure, the refractible portion of the bar is composed of a shaft attachment portion and a sliding sheath tube surrounding the shaft attachment portion.

[0011]

According to the first aspect of 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, and the bar end is clamped with the diversion metal object. By fastening the parts vertically, the bar is supported vertically and the bar is bent at a right angle on the way. And
By overlapping the horizontal portions bent at right angles, the two bars stand upright as a U-shaped handrail. Since this conversion metal fitting is attachable and detachable as it is connected to the building material of the building frame by the clamp metal fitting, it can be detached from the building material when it is removed, and it is convenient to carry and has a good storability.

[0012] On the other hand, after adding the building frame of the upper stage, the end of each bar is removed from the clamp metal object and each bar is extended linearly, and the end of each bar is again locked to the locking projection of the diversion metal object. If this is done, it will be set again between the building frames using this as a crossing streak.

According to the second aspect of the present invention, in addition to the above-mentioned function, the refractable portion of the bar is composed of axially-attached portions of the bars and a sliding sheath tube surrounding the axially-attached portions. By enclosing it with the sliding sheath tube when the section is straightened, it can be restrained from further bending.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below 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 scaffolding 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 plate (scaffolding plate) 2 and braces 3. Are the same.

First, the diversion metal fitting 9 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 at the bottom of 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 portion 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 12 is equivalent to the locking projection 7 protruding from the side of the section a, and the locking projection 12 may have a built-in gravity lock which is a protruding 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 piece 14 hooked from the plate body 10 to the outer periphery of the horizontal member 1b of the building frame 1 is provided so as to project at a lower portion of the plate body 10 of the diversion metal fitting 9 and slightly above the clamp metal article 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 with a pin below the position where the bar 3a is inserted into the center ring 15, and a sliding sheath pipe 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-attaching portion 17 is provided with a stopper 19a having a protruding shape so that the sliding sheath tube 18 surrounding the shaft-attaching portion 17 does not move further. 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 how to use it, first, as shown in FIG. 8, 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 braces 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.
Is added. 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 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.

[0029]

As described above, the framework 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 the 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 board 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 the front page (72) Inventor Masashige Yoneda 1-15-7 Matsushima, Edogawa-ku, Tokyo Edogawa Koki Co., Ltd. (56) References JP-A-2-225767 (JP, A) JP-A 6-63732 (JP, A) JP-A-6-146569 (JP, A) Actually open 6-56316 (JP, U) Actually open 6-56319 (JP, U) Actually open 51-142723 (JP, U) Actual Kohei 4-1242 (JP, Y2) Actual Kohei 4-38029 (JP, Y2)

Claims (2)

(57) [Claims] 1. In a frame scaffolding in which building frames are connected to each other by a cloth plate that hangs the 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 has a bendable part below the restrained position by the center ring, and a clamp metal fitting that joins the building material of the building frame to the building material of the building frame at the lower part of the plate that splits into two forks. The frame scaffolding is characterized in that each of the upper branching parts is detachably attached to each upper branching portion with a locking projection at the end of the bar and a clamp metal fitting located above it on a vertical line. 2. The frame scaffold according to claim 1, wherein the bendable portion of the bar is composed of a shaft attachment portion and a sliding sheath tube surrounding the shaft attachment portion.