JPH0280760A - Clamp for handrail pipe connection - Google Patents

Abstract

PURPOSE:To obtain a simple scaffold with good working efficiency by loading a holding metal fixture to the end of a fitting section of a fitting metal fixture, pivoting a fixed bolt clamping the metal fixture on the upper end and forming a mounting section to fix temporarily a handrail pipe to opposite side of a clamp body. CONSTITUTION:A holding metal fixture 12 is pivotted on the lower end of a fitting section 11a of a fitting metal fixture 11 fitting to a scaffold pipe (P) side. A mounting section 2 capable of fixing temporarily a handrail pipe to opposite side of the fitting section 11a of a clamp body 1 pivotting a fixed bolt 13 capable of clamping the holding metal fixture 12 to the fitting metal fixture 11 is formed on the upper end of the fitting section 11a. A temporary stopping piece 24 on the tip of a rod 21 of the mounting section 2 is incorporated into a cut 22 provided on the tip of the rod 21, and a clearance hole 25 provided to the temporary stopping piece 24 is fitted to a pin 23 to prevent the slippage of the handrail pipe. According to the constitution, a projection to accept a fitting hole of the handrail member is metalized, and the metalized projection can be mounted on any part of a scaffolding member so that it is capable of loading and unloading.

Description

[Detailed Description of the Invention] (Object of the Invention) This invention relates to a clamp for assembling scaffolding pipes used at construction sites and civil engineering sites, and in particular, a clamp with a novel structure suitable for a new use of connecting handrail pipes. This is what we are trying to provide.

(Prior art) Scaffolding is a temporary structure or scaffolding that is indispensable when constructing various structures or repairing existing structures. A few years ago, scaffolding was made by combining logs in a lattice pattern and passing scaffolding boards over it, but now, except for small-scale scaffolding, most scaffolding is already gate-shaped or other. It is assembled by connecting framework scaffolds made of processed and assembled pipes, and is now realized by a structure in which single steel pipes of appropriate lengths are combined vertically and horizontally, and the intersections are connected and fixed with clamps. ing.

These scaffolds must guarantee the safety of workers, so the standards for parts and materials and their use are stipulated by the Industrial Safety and Health Act and its regulations, the Japanese Architectural Academy Standard Specifications, the Japanese Industrial Standards, etc. There are detailed standards for structures assembled using this method. According to this standard, reinforcement materials are required to be used to reinforce the skeleton assembled in a lattice shape with the building material (vertical members) and cloth (horizontal members). Bracing materials are installed in the form of battens in each frame of the skeleton part, which is arranged in a grid pattern on the side close to the object and on the side outside the scaffolding board (in order to install the reinforcement materials at designated points on the building site). The protrusions are pre-formed, and the attachment parts on both ends of the brace are fitted into the protrusions.
be attached). As a result, this brace serves not only to reinforce the skeleton, but also to prevent workers moving on the scaffolding from falling.

In this way, reinforcement materials are required for safety reasons, but for workers who work while moving on the scaffolding boards, it is difficult to use materials when moving from the scaffolding boards into the structure. When it is necessary to move equipment or tools, these braces get in the way and hinder smooth work, so the braces are removed from areas that are frequently accessed, ignoring safety regulations. The reality is that the priority is given to smooth work, and guidance from the Labor Standards Inspection Office,
It is also true that actions such as removing the braces are repeated over and over again, ignoring this.

This situation seems to be due to the fact that scaffolding structures have not been considered from both safety and workability perspectives.
In this invention, we have carried out research from various angles in order to adapt to this, and we have found that only the parts where access is necessary (specific parts of the lattice-like skeleton part located on the structure side) are made of braces. By removing the handrail material and instead fixing the handrail material horizontally to the building site as a support, it is possible to realize a scaffold that can perform the fall prevention function without sacrificing much of its reinforcing effect. I found out.

As a method for attaching handrail materials using the building site as a support, for example, as has already been done for installing braces,
It is also possible to provide a protrusion in advance at a predetermined location on the construction part of the scaffolding member, and to fit the protrusion into a fitting hole that is not formed in the handrail material, but this method is also possible. In the case of products, protrusions for this purpose must be formed in advance on all scaffolding members (even though they are only needed for scaffolding members in specific locations), or protrusions for this purpose must be formed in advance on all scaffolding members that have already been purchased. However, this is not necessarily a sufficient solution as there are problems such as it cannot be handled and must be replaced or modified.

Therefore, in this invention, in order to achieve the problem of making it possible to easily attach the handrail material to any required location, the protruding portion that receives the fitting hole of the handrail material is made of metal. , which can be detachably attached to any part of the scaffolding member. The details of the configuration will be explained below based on typical embodiments shown in the drawings.

(Structure of the Invention) The handrail pipe connection clamp of the present invention basically has the following structure.

That is, a clamping metal fitting 12 is pivotally attached to the lower end of the fitting part 11a of the fitting metal fitting 11 that fits into the side surface of the scaffolding pipe P, and a clamping metal fitting 12 is pivotally attached to the lower end of the fitting part 11a of the fitting metal fitting 11 that is fitted to the side surface of the scaffolding pipe P, and a clamping metal fitting 12 is connected to the upper end of the clamping metal fitting 12 at one end of the fitting part 11a. A fitting part 11 of the clamp body 1 is pivotally connected with a fixing bolt 13 that allows the fastening fitting 12 to be tightened to the fitting fitting 11 side.
This clamp for connecting a handrail pipe has a mounting portion 2 to which a handrail pipe 3 can be temporarily attached on a portion opposite to the side where a is formed.

The clamp body 1 consists of two clamp bodies, which have been used to connect and fix two single pipes in a crossed or parallel manner, and are assembled back to back to each other so that the back to back parts can freely rotate. It may be formed to have the same structure as either one of the conventional clamps.

The attachment part 2 may be formed to have an appropriate structure in consideration of the connection structure formed at both ends of the handrail pipe 3 to be connected. Although not particularly shown, for example, the attachment part 2 may be formed on the handrail pipe 3.
In addition to using a structure that holds the holder in place, or using a known attachment structure such as a band fixation structure that is not easy to operate, It is desirable to make it a standard.

(Embodiment 1) As can be clearly understood from the overall perspective view in FIG. 1, the horizontal sectional view passing through the rod axis in FIG. It consists of a rod 21, and at the tip of the rod 21 there is a temporary fixing piece 24 and other known retaining pieces I!
This is a clamp for connecting a handrail pipe in which a top is formed.

Retainer I! The temporary fixing piece 24 shown as a bucket is attached to the rod 21
It is incorporated into the notch 22 provided at the tip of the
If the pin 23 is fitted into the hole 25 provided in the temporary fixing piece 24 and the state shown in FIG. If you slide the hole 25 from the state shown in , shift the entire body, and turn the substantially obliquely formed end side to face the back of the notch 22, the temporary fixing piece 24 will be As shown by the chain line, it forms a straight line with the rod 21 and allows the handrail pipe 3 to be freely attached and detached.

Although not shown in the drawings, other known slip-out prevention ms include a claw piece with a built-in spring built into the tip of the rod 21, and the claw piece is usually in a state of protruding from the outer periphery of the rod, and the handrail pipe 3 is It is possible to adopt a structure in which the claw piece is pushed into the rod 21 against a spring when it is attached and detached.

(Function and Effect) The handrail pipe connection clamp of the present invention having the above-described configuration can be used to connect the scaffolding pipe P at the necessary locations, as shown in the perspective view of the used state shown in FIG. In other words, in the building site located on the side near the wall of a structure, industrial safety regulations stipulate the installation of braces for the purpose of reinforcing the structure and preventing falls. Scaffolding pipe P that corresponds to a position where it is not possible to work with the pipe removed, but it may pose a hindrance to the movement of workers from the scaffolding to the structure or from the structure to the scaffolding, or the loading and unloading of materials.
, P... are arranged and fixed at optimal height positions with the attachment parts 2 facing the side where the scaffolding board is located, that is, the worker's path side, and the attachment parts 2, 2 The handrail pipes 3, 3, . . . are removably fixed using the .

In this way, using the clamp of the present invention, the handrail pipe 3 can be easily connected between the scaffolding pipes P, P, etc., which will serve as the construction site, and as a result, the handrail pipe 3 connected through the clamp can be easily connected between the scaffolding pipes P, P, etc. Pipe 3, 3... are scaffolding pipes P, P...
The handrail pipe 3 is arranged horizontally in a continuous manner, and the handrail pipe 3 is arranged horizontally in an optimal position to prevent workers from falling. Therefore, compared to the previous situation where braces were placed in a batten-like manner within a frame surrounded by the building site and cloth, occupying the same space, The space is wide open, making it extremely easy to move workers and take materials in and out.

In particular, when the attachment part 2 is formed by protruding the rod 21, it is not only easier to manufacture, but also the strength of the metal fitting can be increased, and the handrail pipe 3 can be attached and detached very easily. Moreover, it can exhibit the excellent feature that it can be carried out safely.

As mentioned above, the handrail pipe connection clamp of this invention is
Originally, it would be a violation of regulations to leave the braces partially removed and should not be used as scaffolding. We successfully solved the actual problem of scaffolding, which had to be used with it removed, and created an almost ideal scaffold that is inexpensive, easy to handle, has no structural or safety problems, and has good workability. This is to make it possible to realize it.

[Brief explanation of the drawing]

The drawings are based on representative embodiments of the present invention, and FIG. 1 is a perspective view of the entire structure, FIG. 2 is a horizontal sectional view of the same, FIG. 3 is a plan view, and FIG. It is a state perspective view. DESCRIPTION OF SYMBOLS 1... Clamp body, 11... Fitting metal tool, 12...
...Same clamping fitting, 13...Same fixing bolt, 2...Mounting part, 21...Same rod, 22...Same notch, 23
...Same pin, 24...Same temporary fixing piece, 25...Same hole, 3...Handrail pipe, P...Scaffolding pipe. No.

Claims (1)

[Scope of Claims] 1. A fitting fitting is pivotally attached to the lower end of the fitting metal fitting that fits into the side surface of the scaffolding pipe, and a fitting fitting is pivotally attached to the upper end of the fitting metal fitting that engages with the upper end of the fitting fitting. A mounting part to which a handrail pipe can be temporarily attached is formed on the opposite side of the clamp body from the side where the fitting part is formed of the fitting part, in which a fixing bolt that can be tightened freely is pivotally attached to the fitting part side. A clamp for connecting handrail pipes. 2. The handrail pipe connection clamp according to claim 1, wherein the attachment portion is made of a protruding rod, and a temporary fixing piece or other known retaining mechanism is formed at the tip of the rod.