JPH11324305A - Handrail for h-frame scaffold - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the safety of work and lessen a sensation of fear in a handrail to be fitted to an upper stage of an H-frame by removing it from above a ledger plate below one step, not from above the uppermost ledger plate. SOLUTION: In a handrail having pin holes 3a-3d passing pins Pa-Pd of an H-frame H in an H-frame scaffold, at least the right and left pin holes 3a, 3b of the upper stage are provided with enlarged hole parts ka, kb in the same directions, which are capable of passing the pins Pa, Pb. In this case, as the lower ends of the enlarged hole parts ka, kb are opened, the work efficiency can be made more excellent than that in the case where the lower ends of the enlarged hole parts ka, kb are closed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a handrail of an H-frame scaffold temporarily provided on an outer periphery of a building or the like, and more particularly, to devising a pinhole shape of the handrail.

[0002]

2. Description of the Related Art In recent years, H-frame scaffolds, which are a type of framework scaffolds, have been widely used in construction work and the like. Here, the H-frame scaffold is a frame using an H-frame instead of a torii-shaped building in a normal framed scaffold. As shown in FIG. 7, an H-frame H is a frame in which bars are connected in an H-shape. , H are connected by laying a cloth plate B between these intermediate bars,
Further, a handrail T is attached to the side surface of the passage using the pins P of the H frame H.

FIGS. 8 and 9 show a procedure for attaching the handrail T to the side of the passage using the pin P. FIG. First,
When the pin P has a normal spring-type projection S as a stopper (see FIG. 8A), if the pin hole O of the handrail T is inserted through the pin P, the projection is acted on by the action of the spring. When the pin S is automatically retracted into the pin P (see FIG. 2B) and the pin hole O passes through the projection S, the projection S automatically protrudes again by the action of the spring, and the handrail T
Are fixed to the H frame H (see FIG. 3C). When the pin P has a manual lever L as a stopper, the lever L is first set horizontally (see FIG. 9A), and the pin hole O of the handrail T is pinned. The handrail T is fixed to the H frame H when the lever L is tilted vertically by hand (see FIG. 3C).
Accordingly, the pin holes O are formed in all the pins P by such a procedure.
Is inserted to construct an H-frame scaffold. The handrail T can be removed from the H frame H by following the above procedure in reverse.

[0004]

However, when a handrail is actually attached to an H-frame scaffold at a site, there are the following problems. That is, a pair of H frames H,
H is provided with two upper and lower handrails T1 and T2 per side surface (see FIG. 7). Among the upper handrails T1, an operator places the upper handrail T1 on the uppermost cloth board Bu with the side surface opened. It must be mounted on the H frame H (see FIG. 10). This is because, in the case of the pin P having the ordinary spring-type projection S as a stopper, the cloth board B at the next lower stage is used.
d from above, the pin holes O of the handrail T1 correspond to the upper pins Pa and Pb of the pins P corresponding to the upper handrail T1.
This is because it is difficult to insert a and Ob, and in the case of a pin P provided with a manual lever L as a stopper,
From above the cloth board Bd, the worker's hand holds the pins Pa, P
b, the handrails T1 cannot be attached by releasing the pins Pa and Pb from releasing.
Therefore, when the upper handrail T1 is attached, the work must always be performed from the uppermost cloth board Bu, so that the worker may fall, causing a greater fear of working and a poor working efficiency. There is. This problem also occurs when the upper handrail T1 is removed from the H frame H.

[0005] Accordingly, the present invention provides an H frame H with an upper handrail T1.
In order to mount the upper handrail T1 from the H frame H and remove the upper handrail T1 from the H frame H, the shape of the pin hole O of the handrail T is set so that the work can be performed not only from the uppermost fabric board Bu but also from the next lower fabric board Bd. The above problem was solved by making improvements,
It is intended to improve the safety and workability of the construction and dismantling work of the H frame scaffold.

[0006]

That is, the invention according to claim 1 is a handrail having a pin hole inserted into a pin of an H frame in an H frame scaffold, wherein at least the upper and lower pin holes on each of the right and left sides are provided. An H-frame scaffolding handrail, characterized in that it has enlarged holes in the same direction, into which the pins can be inserted without releasing the pins from coming off.

As described above, since the upper and lower pin holes of the H frame scaffolding handrail have the enlarged hole portions, the pins corresponding to the both pin holes are not released from the pin holes so that the two pin holes are not released. The H-frame scaffolding handrail can be temporarily fixed to the H-frame by sliding the H-frame scaffolding handrail through the enlarged hole. Therefore, by utilizing this fact, if the enlarged hole portion is inserted in the above-described manner into the pin located far from the reach of the worker, it is not on the uppermost fabric plate but on the lower fabric plate. Above, H for H frame
The handrails for frame scaffolding can be attached and detached, and the safety and workability of the construction and dismantling work of the H frame scaffold can be improved.

According to a second aspect of the present invention, in the first aspect of the present invention, a lower end of the enlarged hole is opened.

When the lower end of the enlarged hole is open as described above, the open portion is located above the pin, and the handrail for the H frame scaffold is simply lowered and the enlarged hole is brought into contact with the pin. And the handrails for the H frame scaffolding are further easily attached and detached.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. In addition, the same reference numerals are used for the same elements, and duplicate descriptions are omitted.

(1) Embodiment 1 FIG. 1 is a perspective view showing an embodiment of an H frame scaffolding handrail according to the present invention, and also shows a positional relationship between the handrail and the H frame. The H-frame scaffolding handrail 1 shown in FIG. 1 includes a flared torii-shaped frame 2 and pin holes 3a to 3d, and each of the pin holes 3a to 3d has a pin Pa of the H frame H, H. ~ Pd
Is formed at a position and a size corresponding to.

Here, “corresponding position and size” means
The following contents are shown. That is, the pin holes 3c and 3d at the lower left and right of the frame 2 are circular holes as in the related art.
These positions and sizes are exactly the same as in the prior art. On the other hand, the upper and lower pin holes 3a and 3b of the left and right sides of the frame 2 are formed by arranging elongated holes in the shape of a conventional circular hole in one direction in an inverted L-shape as shown in FIG. Has an open lower end. The shape, size and direction of the pin holes 3a and 3b are the same.

First, a procedure for attaching the H frame scaffolding handrail 1 to the H frames H, H will be described with reference to FIG.
First, just above the upper pins Pa and Pb of the H frame H,
In addition, the H-frame scaffolding handrail 1 is arranged such that the open ends of the enlarged holes ka and kb of the pin holes 3a and 3b are located behind the projections Sa and Sb.
Is held (see FIG. 3A), and the H-frame scaffolding handrail 1 is slid downward as it is to insert the pins Pa and Pb into the enlarged holes ka and kb of the pin holes 3a and 3b (see FIG. FIG. Next, after the H-frame scaffolding handrail 1 is slid horizontally as it is (see FIG. 3C), the pins Pc, P
The pin holes 3c and 3d are inserted through the holes d (see FIG. 3D).

By following these procedures, the pin holes 3a, 3
Compared to the case where b is a circular hole similar to the conventional one, despite the work in an unreasonable posture from the cloth plate Bd one step below,
Since the H-frame scaffolding handrail 1 can be easily temporarily fixed to the H-frames H, H, work safety is greatly improved and fear of work is reduced. Note that the same effect can be obtained by removing the H frame scaffolding handrail 1 from the H frames H, H by following the reverse procedure.

Considering the conditions related to the shapes of the pin holes 3a to 3d of the H-frame scaffolding handrail 1 in consideration of the above-described procedure, at least the pin holes 3a and 3b are disengaged from the pins Pa and Pb. The pins Pa, P without releasing the stop
It is necessary to have the enlarged holes ka and kb into which b can be inserted in the same direction. The reason is the same as in the second embodiment, and will be described there. Further, in the present embodiment, since the lower ends of the enlarged holes ka and kb are open, the workability is superior to the case where the lower ends of the enlarged holes ka and kb are closed (FIGS. 2A and 2A). b)).

(2) Embodiment 2 FIG. 3 is a perspective view showing an embodiment of an H frame scaffolding handrail according to the present invention, and also shows a positional relationship between the handrail and the H frame. The H-frame scaffolding handrail 4 shown in FIG. 1 includes a four-sided frame 5, a four-sided frame reinforcing portion 6, and pin holes 7a to 7d. Is formed at a position and a size corresponding to.

Here, "corresponding position and size" means
The following contents are shown. That is, the pin holes 7c and 7d at the lower left and right of the four-sided frame 5 are circular holes as in the conventional case, and their positions and sizes are exactly the same as those in the conventional case.
Therefore, only when the pins Pc and Pd are horizontal, they can be inserted into the corresponding pin holes 7c and 7d. On the other hand, the upper and lower pin holes 7a and 7b on the left and right sides of the four-sided frame 5 are circular holes having the same size and position as the conventional one, and have relatively large enlarged hole portions ka and kb, respectively. Are added to form an integral body. Specifically, the pin hole 7
The holes a and 7b are provided with regular holes through which only the horizontal pins Pa and Pb can be inserted, and the pins Pa and Pb which are vertically falling (the stoppers are activated). Are formed integrally with each other. Note that the enlarged holes ka, k
b has exactly the same shape for both the pin holes 7a and 7b, and the direction in which they are formed is also the same.

Here, based on FIG. 4, an H frame scaffolding handrail 4 will be described.
The procedure for attaching to the H frames H, H will be described. First, the H-frame scaffolding handrails 4 are applied to the pins Pa and Pb, respectively, in a state where the upper pins H and H of the H-frame H are not released from being detached, that is, while the levers La and Lb are tilted vertically.
Are inserted through the enlarged holes ka and kb of the pin holes 7a and 7b (see FIG. 3A). Next, the H-frame scaffolding handrail 1 is set so that the pins Pa and Pb are located directly above the pin holes 7c and 7d, respectively.
Is slid in the direction of the arrow (see FIG. 3B). The lower pin holes 7c and 7d are inserted into the pins Pc and Pd, respectively.
(See (c) in the same figure), and finally, levers La and Lb
Is tilted vertically to activate the stopper (see (d) in the same figure).

With such a procedure, the pins Pa, Pb
The H-frame scaffolding handrails 4 can be attached to the H-frames H, H without operating the stopper later. In the state shown in FIG. 3 (b), utilizing the fact that the H-frame scaffolding handrails 4 are temporarily fixed to the H-frames H, H, the pins Pa, Pb, which are pins that are out of reach of the worker, are used. If the H frames H, H are assembled without releasing the stopper, and the enlarged holes ka, kb are inserted into the pins Pa, Pb in the above procedure, as shown in FIG. The H-frame scaffolding handrails 4 can be attached to the H-frames H, H not only on the plate Bu, but also on the next lower cloth plate Bd as shown in FIG. 5, and work safety is dramatically improved. The fear of working is reduced. In addition, the handrail 4 for the H frame scaffold is connected to the H frame H,
The same effect can be obtained in the case of removing from H by following the reverse procedure.

The H-frame scaffolding handrail 4 is formed by the above-described procedure.
In order to enable the attachment and detachment of the H-frame scaffolding handrail 4, at least the pin holes 7a and 7b of the pin holes 7a to 7d
However, it is necessary to have enlarged holes ka and kb in the same direction in which the pins Pa and Pb can be inserted without releasing the stopper. The reason is as follows.

First, the enlarged holes ka and kb must be large enough to allow the pins Pa and Pb to be inserted without releasing the release prevention.
This is because the state of FIG. 4A cannot be realized if b is small. Therefore, even if the enlarged holes ka and kb are too large, FIG.
As long as the state of (a) is realized, a problem such as interference with other parts may occur. For example, it is desirable that the size of the enlarged holes ka and kb be small.

Next, the reason why the enlarged holes ka and kb need to be provided in the same direction is that the handrail 4 for the H frame scaffold is slid with respect to the H frames H and H as shown in FIG. Thereby, the H frame scaffolding handrail 4 is temporarily fixed to the H frames H, H. Therefore, as long as the directions in which the enlarged holes ka and kb are formed are the same, there is no limitation on up, down, left and right. However, the enlarged hole k
When a and kb are provided below the pin holes 7a and 7b,
Unless the pins Pa and Pb of the H frame H are improved, the object of the present invention cannot be achieved. This will be described in the following third embodiment.

The requirement that at least the pin holes 7a and 7b have the enlarged hole k is that when only one of the pin holes 7a and 7b has the enlarged hole k, This is because the state in which the handrail 4 for scaffolding of the H frame is temporarily fixed to the H frames H, H (see FIG. 4B) is unstable. Therefore, even when one or both of the pin holes 7c and 7d have an enlarged hole k in addition to the pin holes 7a and 7b, the H-frame scaffolding handrail 4 can be attached and detached in the above-described manner. Applicable. However, in order to attach and detach the H-frame scaffolding handrail 4 in the above-described embodiment, it is sufficient that only the upper left and right upper pin holes 7a and 7b among the pin holes 7a to 7b have the enlarged hole portion k.

When selecting the pin hole 7 having the enlarged hole k and determining the shape and position of the enlarged hole k, H
Note that when the frame scaffolding handrail 4 is engaged with the H frame H, an inclination angle occurs between the two construction surfaces (see FIGS. 4A and 4B). It is necessary to consider the dimensional relationship. As described above, the conditions related to the shape of the pin holes 7 of the H-frame scaffolding handrail 4 should be determined based on whether the H-frame scaffolding handrail 4 can be attached to and detached from the H-frame H in the above-described manner. Therefore, the handrail for the H-frame scaffold according to the present invention is not limited to the handrail shown in the present embodiment, and various other embodiments can be considered as long as the above criteria are satisfied.

(3) Embodiment 3 FIG. 6 shows a so-called gourd-shaped pin hole formed by providing an enlarged hole k below a regular position of the pin hole, and a pin P having a rivet shape. Such an H-frame scaffolding handrail 8 can be riveted to the upper left and right upper pin holes by inserting the head of the rivet-shaped pin P into the enlarged hole k and then sliding the H-frame scaffolding handrail downward. The shape pin P can be temporarily fixed. As another embodiment, as shown in FIG. 11, an enlarged hole k may be provided above the regular position of the pin hole in the H-frame scaffolding handrail 8. And for other usage procedures, etc.,
Since this is substantially the same as Embodiments 1 and 2 already described, detailed description is omitted here.

[0026]

As described above, H according to the present invention is used.
The handrails for frame scaffolding are not on the uppermost fabric board where the side of the aisle has not been cured during the whole process, but on the safer lower fabric board where the handrail for the H frame scaffold is already attached to the side face of the aisle. Since it can be attached and detached, it is possible to significantly reduce the danger of workers falling and fear of working, and to contribute to improving the safety of construction and dismantling work of H frame scaffolds. In addition, it improves the efficiency of curing work and contributes to the efficiency of construction.

[Brief description of the drawings]

FIG. 1 is a perspective view illustrating an H-frame scaffolding handrail according to a first embodiment of the present invention, and also shows a positional relationship between the handrail and an H-frame.

FIGS. 2A and 2B are a front view and a side view showing a procedure for attaching the H-frame scaffolding handrail shown in FIG. 1 to the H-frame.

FIG. 3 is a perspective view illustrating an H-frame scaffolding handrail according to a second embodiment of the present invention, and also shows a positional relationship between the handrail and the H-frame.

4A and 4B are a front view and a side view showing a procedure for attaching the handrail for the H frame scaffold shown in FIG. 3 to the H frame.

FIG. 5 is a front view illustrating an operation of attaching an H-frame scaffolding handrail to the H-frame.

FIG. 6 is a perspective view showing an H-frame scaffolding handrail according to a third embodiment, and also shows a positional relationship between the handrail and the H-frame.

FIG. 7 is a perspective view illustrating a configuration of an H-frame scaffold and a conventional handrail.

FIG. 8 is an essential part enlarged view showing a procedure for attaching a handrail to the H frame using a pin having a normal spring-type projection as a stopper.

FIG. 9 is an enlarged view of a main part showing a procedure for attaching a handrail to an H frame using a pin provided with a manual lever as a stopper.

FIG. 10 is a front view showing a conventional technique for attaching a handrail to an H frame.

FIG. 11 is an enlarged view of a main part showing another embodiment of the pin holes of the handrail for the H-frame scaffold shown in FIG. 6;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Handrail for H frame scaffolding 2 ... Frame body 3 ... Pinhole 4 ... Handrail for H frame scaffolding 5 ... Square frame 6 ... Square frame reinforcing part 7 ... Pin hole 8 ... Handrail for H frame scaffolding B ... Cloth board H ... H Frame L: Lever O: Pin hole P: Pin S: Projection T: Handrail k: Enlarged hole

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Shinji Yoshida 2-4-102, Shinhama-cho, Ashiya-shi, Hyogo (72) Inventor Yasuo Sakai 7-21-1 Fukakusa Nishiura-cho, Fushimi-ku, Kyoto-shi, Kyoto

Claims (2)

[Claims] 1. A handrail having a pin hole inserted through a pin of an H frame on an H frame scaffold, wherein at least upper and lower pin holes on each of the right and left sides insert the pin without releasing the pin from coming off. A handrail for an H-frame scaffold, characterized in that the handrail has an enlarged hole portion which can be formed in the same direction. 2. The handrail for an H-frame scaffold according to claim 1, wherein a lower end of the enlarged hole is open.