JPH06307071A - Frame scaffold - Google Patents

Abstract

PURPOSE:To facilitate stretching a handrail and to prevent a worker from falling by providing a handrail on a cross brace in such a manner that one end thereof is fixed by a shaft and the other end thereof is slidably engaged. CONSTITUTION:A horizontal material 1b is connected to the centers of right and left on-ground erecting materials 1a to construct a building frame 1 as a H-shaped frame on the whole. Subsequently, A U-shaped bracket 10 for shaft- fixing is provided in the vicinity of the upper end of one bar 3a of the cross brace 3, and the end of a handrail 9 is fixed through the bracket 10. Subsequently, building frames 1 for forming the upper stage are added to the upper ends of the building frames 1 by connecting pins, the folded brace 3 is expanded like an X-shape in such a manner as to put up the whole of the brace overhead by gripping the vicinity of the lower ends with hands, locking projections 7 of the on-ground erecting material 1a are inserted in through holes 8 to install the brace 3 on the upper stage, and a cloth plate 2 for the upper stage is stretched. Thus, fitting of the handrail 9 can be facilitated, and the upper half parts of the on-ground electing material 1a are erected above the cloth plate 2 so that the handrail 9 is fitted thereto so as to prevent a worker from falling.

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, in frame scaffolding, as shown in FIG. 10, 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 pipe and a horizontal member lb made of steel pipe connecting the building materials 1a at their upper ends, and the cloth plate 2 is hooked at the ends (not shown). No.) is suspended between the horizontal members lb 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.

If the building frame 1 as shown in FIG. 4 is an H-shaped frame in which the centers of the left and right building materials 1a are connected by horizontal members lb, the uppermost floor is located on the side of the cloth plate 2 on the side. Since the upper half of this building material 1a is projected, a handrail is to be handed over this, and when the handrail is to be attached or detached, the upper half of this building material 1a should be used for the safety of workers. It can also be used as an anchorage for the lifeline from the obi.

However, since the use of the safety belt is an absolute condition as described above, it is not troublesome and the work efficiency is poor if the life belt is restrained.

The object of the present invention is to eliminate the inconveniences of the above-mentioned conventional examples, to allow the handrails to be easily straddled or removed at the same time as the bracing, and this work can be performed safely even overhead. The purpose is to provide a framework scaffold that eliminates the need for workers to use safety belts.

[0012]

Means for Solving the Problems In order to achieve the above-mentioned object, according to the present invention, in a frame scaffold that connects between building frames with a cloth plate whose ends are hung on the building frames and cross braces, one end has one cross bracing. A handrail that is pivotally attached near the upper end of the bar and has the other end slidably engaged with the upper half of the other bar is provided with crossed streaks, and the frame connects the center of the column with beam members. The gist is that it is an H-shaped frame formed by.

[0013]

According to the first aspect of the present invention, when the cross braces that are folded so as to overlap each other are spread out to form an X shape, one end of the handrail incorporated in the cross braces also rotates. Then, the other end slides along the upper half of the other bar of the braces, is extended from the state of overlapping the braces, and is horizontally hung on the upper part of the braces. Therefore, if the cross braces are attached between the frames, the handrail will be set at the same time. If the above operation is performed by gripping the vicinity of the lower end of the folded cross braces with a hand and holding the whole above the head, the cross braces and the handrail can be set at the overhead position. The dismantling operation may be performed in the reverse order.

According to the second aspect of the present invention, in addition to the above-described action, the frame is an H-shaped frame, so that the upper half portions of the left and right columns of the frame stand upright from the cloth plate. Cross braces and handrails are attached here to prevent falling, and an upper frame is added to the upper part of this frame. Can be done from The operation in the case of disassembling is also the same, and the disassembling of the upper part is always performed inside the cross streaks and the handrails of the lower part.

[0015]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a side view showing an embodiment of the framework scaffold of the present invention.

In the frame scaffolding of the present invention, as in the conventional example shown in FIG. 10, 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 building frame 1 will be described. As shown in FIG. 5, the building frame 1 is integrally constructed of left and right building materials 1a made of steel pipe and a horizontal member lb made of steel pipe connecting the building materials 1a at their upper ends. However, this horizontal member lb connects the centers of the left and right building materials 1a to form an H-frame as a whole.

Reference numeral 6 in the drawing denotes a cane-shaped reinforcing member arranged in the lower half portion below the horizontal member lb, and the locking projection 7 protruding from the side of the building material 1a of the building frame 1 is , This is building material 1a
It is arranged to be provided slightly below the upper end and the horizontal member lb. The locking projection 7 may have a built-in gravity lock which is a projecting and retracting piece. The reinforcing member 6 may be an arched member on the left and right as a diagonal member at the corner portion.

On the other hand, as shown in FIG. 2, the braces 3 are cross braces which are pre-assembled into an X-shape, in which bars 3a made of pipes are axially attached to each other at the center, and the ends of each bar 3a are flat. As a plate, a through hole 8 into which the locking projection 7 is inserted is provided here.

Further, a shaft-mounted C-shaped bracket 10 is provided near the upper end of one bar 3a of the cross braces 3.
The end of the handrail 9 is pivotally mounted via the bracket 10. (See Figure 8).

On the other hand, as shown in FIG. 6 and FIG. 7, a wheel 11 is provided at the other end of the handrail 9, and the upper half of the other bar 3a of the cross braces 3 is inserted into the wheel 11. It is slidable along the bar 3a.

In this manner, the handrail 9 is formed by expanding the cross braces 3 in the X-shape as shown in FIG.
When the cross braces 3 are folded, the handrail 9 also fits over the mutually overlapping bars 3a as shown in FIG. 5 when the cross braces 3 are folded.

Next, the usage will be explained. As shown in FIG. 4, the building frame 1 (chain line portion) constituting the upper floor is first connected to the upper end of the building frame 1 by a connecting pin (not shown). . In this case, since the upper half of the building material 1a of the building frame 1 of the floor appears on the cloth plate 2 of the floor, the cross braces 3 and the handrails 9 are attached using this portion. The work of the building frame 1 constituting the upper floor can be performed on the cloth plate 2 and inside the cross braces 3 and the handrails 9.

Next, the cross braces 3 folded in the state as shown in FIG. 3 are grasped near the lower end of the bar 3a with a hand, and the whole bar is held above the head so as to be expanded into an X-shape. The handrail 9 incorporated in the paddle 3 is also separated from the bar 3a as shown in FIG.

In this way, the interlock braces 3 are attached to the upper floor by inserting the locking projections 7 into the through holes 8 and the setting is completed.

Then, the cloth plate 2 on the upper floor is laid over.

In the case of dismantling, the operation is the reverse of the above operation. The cloth plate 2 on the upper floor is removed, the cross braces 3 on the upper floor are removed together with the handrail 9, and the building frame 1 on the upper floor is removed. Since the work can also be performed on the cloth board 2 to which the cross braces 3 and the handrails 9 are attached on the working floor, it is not necessary to use the safety belt.

[0028]

As described above, the frame scaffold of the present invention is
Since the handrails can be easily and easily passed over or removed at the same time as the braces, and this work can be done safely even overhead, work from the floor where the handrails and braces have already been placed to the work above it is possible. This can be done without the need for workers to use the safety belt.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of a framework scaffold of the present invention.

FIG. 2 is a front view of the braces used in the frame scaffolding of the present invention in an unfolded state.

FIG. 3 is a front view of the framework scaffolding of the present invention before the braces are widened.

FIG. 4 is a perspective view of an assembled or disassembled state of the framework scaffold of the present invention.

FIG. 5 is a front view of the braces used in the frame scaffold of the present invention in a folded state.

FIG. 6 is a front view of a handrail end portion.

FIG. 7 is a side view of a handrail end portion.

FIG. 8 is a front view of the other end of the handrail.

FIG. 9 is a front view of a frame used in the frame scaffold of the present invention.

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

[Explanation 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 ... Handrail 10 … Bracket 11… Ring

Front page continued (72) Inventor Masashige Yoneda 1-15-7 Matsushima, Edogawa-ku, Tokyo Edogawa Koki Co., Ltd.

Claims (2)

[Claims] 1. In a frame scaffold that connects between building frames with cloth plates whose ends are hung on the building frames and cross braces, one hand is pivotally attached at one end and the other handrail is slidably engaged with the other handrail. A frame scaffold characterized by being installed in different ways. 2. The building frame is formed by connecting the center of the columns with beam members.
The framework scaffold according to claim 1, which is a formwork.