JPH0474500B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to the provision of special clamp metal fittings used for connecting hanging chains and single pipes at construction work sites.

"Conventional technology" Traditionally, at construction work sites, etc., for example,
As shown in Fig. 2, there is a case where it is desired to attach the single arm pipe 2 on which the scaffolding board 1 is to be placed over a hanging chain 4, which has sufficient strength and is a flexible longitudinal chord, at the location indicated by the surrounding line 3. be.

``Problems to be solved by the invention'' However, the means of attachment is by winding steel wires for binding, and there is no need for assembly or disassembly.
Changing the attachment position is extremely time-consuming and inefficient, and reliability in terms of strength is not guaranteed, and there are concerns about safety.

In addition, numeral 5 in the figure indicates a handrail single pipe which is connected and arranged by the same means.

"Means for Solving the Problems" The present invention was made in view of the above-mentioned circumstances, and its gist is that a fastening bolt is installed from the back of either one of the clamp-holding arms. , the said fastening bolt is bridged between the upper and lower upright position rings of the suspension chain, and is inserted through a through hole drilled in the middle of the chain restraining channel steel and inside the lying position ring. The present invention provides a special clamp metal fitting which is made to pass through and fasten with a nut, thereby realizing efficiency in assembly, disassembly, and changing of the connection position, as well as reliable mechanical strength of the connection part.

"Effect", "Example" This will be explained in detail below based on the drawings.

Figures 1a, b, and c are a front view, a bottom view, and a detailed view of the parts of the special clamp hardware according to the present invention, and 6 in the figure shows the area between one end of the two holding arms 6a and 6b. A general-purpose single tube 10 holder having a pin 7, a fastening bolt 8 rotatably pivoted 9 on one end between the other ends, and a notch groove for fitting the fastening bolt 8 on the other end. This is a clamp for use.

Reference numeral 11 denotes a fastening bolt that is planted from the back side of the clamp arm 6a. In the illustrated embodiment, the fastening bolt 11 is fixed by welding 12 and is set up, but this is preferable from the viewpoint of preventing it from falling off.

Reference numerals 13 and 14 are channel steels that are fitted between the upper and lower standing position rings 4b and 4b of the lying position ring 4a of the suspension chain 4, and are assembled facing each other to form the rings 4b, 14. 4b, and thus the three rings 4b, 4a, and 4b are restrained in a straight line.

In the illustrated embodiment, the channel steel 13 is the clamp arm 6.
In contrast to a, the clamp 6 is welded 15 in advance in a position orthogonal to the holding single pipe 10, but in this case, it not only prevents it from falling off, but also rigidly restrains the connecting part orthogonally. .

Through holes 13a and 14a for passing through the fastening bolt 11 are bored in the middle of the channel steels 13 and 14, and the fastening bolt 11 is inserted into the prostrate position ring 4a.
A hanging chain 4 is attached by penetrating the inside and using a set latching.
The clamp 6 is connected to the clamp 6.

Therefore, by tightening the nut 16,
The three rings 4b, 4a, 4b described above are sandwiched between the channel steels 13, 14 from both sides and restrained in a straight line.

Therefore, the clamp 6 is fixed to the stable plate base (channel steel 13) while restraining the flexible hanging chain in the shape of a straight bar over a predetermined span.

Note that 17 indicates a spring washer, but channel steel 13, 1
4 is also fastened at the center and has a spring effect, so the nut fastening effect is reliable.

"Effects of the Invention" As described above, according to the present invention, a connection with excellent mechanical strength can be achieved by simply fitting the channel steel against the suspension chain and tightening the nuts, which is suitable for safety, and the work is simple. From this, efficiency in installation, disassembly, and changing of attachment positions can be achieved.

[Brief explanation of drawings]

Figures 1a, b, and c are a front view, a bottom view, and a detailed view of parts in the usage mode of the special clamp hardware of the present invention;
FIG. 2 is an explanatory perspective view of the suspended scaffold. Explanation of symbols, 1...Scaffolding board, 2...Single pipe, 3...
... Surrounding line, 4 ... Hanging chain, 4a ... Prone posture ring, 4b ... Standing posture ring, 5 ... Handrail single pipe, 6 ... Clamp, 7 ... Pin fastening, 8 ... Fastening bolt, 9 ... ...Pivotal stop, 10...Holding single tube, 11
... Fastening bolt, 12 ... Welding, 13, 14 ...
Channel steel, 13a, 14a...through hole, 15...welding, 16...nut, 17...spring washer.

Claims (1)

[Scope of Claims] 1. A fastening bolt is installed from the back of either one of the clamp-holding arms, and the fastening bolt is bridged between the upper and lower standing posture rings of the hanging chain. For connecting a chain and a single pipe, characterized by having a through hole drilled in the middle of a channel steel for restraining a chain that is fitted against each other, and passing through the lying posture ring, and then fastened with a nut. Special clamp hardware. 2. A special clamp metal fitting for connecting a chain and a single pipe as set forth in claim 1, in which a fastening bolt is fixed by welding and planted. 3. A special clamp hardware for connecting a chain and a single pipe according to claim 1, wherein the grooved steel placed on the back of the clamp arm is welded in advance in a direction orthogonal to the holding single pipe.