JPH0450359Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a metal fitting for connecting steel scaffolding boards that are erected along the periphery of a building.

Prior Art When constructing a building, a working scaffold is constructed along the periphery of the building, but for safety reasons, it is preferable that adjacent scaffolding boards be connected to each other.
As in the invention of Publication No. 157649, a pair of cross-sections in which a through hole is bored near the center of each end of the adjacent scaffolding board, and the main parts of the metal fittings are arranged opposite to each other. However, there is a method in which scaffold boards are fastened together using a metal fitting that has a connecting rod passed through the hole and tightened with nuts from both ends of the connecting rod.

Problems that the invention aims to solve Since the work of constructing a work scaffold involves work at height, it is desirable that the attachment and detachment of the scaffold plate connecting fittings be as simple as possible. In a structure that requires tightening, when the nut is rotated when attaching or removing the metal fittings, the connecting rods may rotate together, which is time consuming and dangerous as the work must be done by one person at height. If the nut falls off, the main body of the metal fitting, connecting rod, and nut will fall apart, and each part may be lost.

Means for Solving the Problems In view of the above points, the present invention is an improvement on the conventional one, in which a pair of metal fittings having a cross-section shape of [2] are placed facing each other on both sides of the ends of adjacent scaffolding boards. In the scaffold board connecting fitting configured to tighten the fitting main body by passing both ends of the connecting rod through a through hole drilled near the center of the metal fitting main body, the through hole of the metal fitting main body is While the connecting rod has a polygonal shape, one end portion of the connecting rod is formed into a polygonal shape having a cross section of approximately the same shape as the through hole, and a locking piece is provided at the tip thereof, and the other end of the connecting rod To provide a scaffold board connection fitting characterized in that a removable retaining pin is provided at the tip of a threaded portion at the end.

Example An example of the present invention will be described based on the drawings.
1 is a connection fitting for connecting the scaffolding board A; 2,
2' is mainly a metal fitting with a cross-sectional shape, and the recesses are placed facing each other so that the scaffolding board A is fitted from both sides, and the connecting rod 4 is inserted into the through hole 3 drilled in the center to connect it. It is integrated by doing. The through hole 3 drilled in the center of the metal fitting main body 2, 2' has a polygonal shape (square in the figure) to prevent the connecting rod 4 from rotating.
It is as follows. In addition, if a step is created at the end of the scaffold board A due to the frame body B attached to the end of the scaffold board A, the center part of the metal fittings main body 2, 2' may be bulged to remove the scaffold board A. This allows it to be held without wobbling.

At one end of the connecting rod 4 that connects the metal fitting main bodies 2, 2', a detent portion 5 having substantially the same shape as the polygonal through hole 3 bored in the metal fitting main bodies 2, 2' is formed. The connecting rod 4 is engaged with the peripheral edge thereof to prevent rotation of the connecting rod 4, and a locking piece 6 for preventing the metal fitting main body 2 from coming off is provided at its tip. Further, a threaded portion 7 is formed at the other end of the connecting rod 4, and a nut 8 is screwed into the threaded portion 7 that passes through the through hole 3 of the metal fitting main body 2'.
A removable retaining pin 9 is provided at the tip of the nut 8 to prevent the nut 8 from coming off, so that the parts do not come apart and get lost when the connecting fitting 1 is attached or detached or transported.

Function: To attach the connecting fitting 1 to the scaffolding board, as shown in Fig. 4, fit the fitting bodies 2, 2' into the ends of the adjacent scaffolding boards A, A, and then tighten the nuts 8 in the tightening direction. The connecting rod 4 can be easily installed by simply rotating it.

In addition, in order to attach and detach the connection fitting 1, use the nut 8.
It can be easily attached and detached by rotating it in the loosening direction and bringing it close to the retaining pin 9.

Effects of the Invention As described above, the scaffold board connection fitting of the present invention can be easily attached to and removed from the scaffold board, making it easy to handle when working at heights, and the connection part also has sufficient strength.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention, FIG. 2 is a side view, FIG. 3 is a sectional view taken along the line C--C in FIG. 1, and FIG. 4 is a perspective view showing the state of use. 1... Connection fittings, 2, 2'... Main fittings, 3
...Through hole, 4...Connecting rod, 5... Rotation stopper, 6
...Locking part, 7...Screw part, 8...Nut, 9...
...Keeping pin, A...Scaffolding board.

Claims (1)

[Scope of utility model registration request] A pair of metal fittings having a cross-section of approximately [] are placed facing each other on both sides of the ends of adjacent scaffolding boards, and both ends of the connecting rod are passed through a through hole drilled near the center of the metal fittings. , in the scaffold board connection fitting configured to tighten the metal fitting main body, the through hole of the metal fitting main body is polygonal, and one end of the connecting rod is polygonal having a cross section approximately the same shape as the through hole. A metal fitting for connecting a scaffold board, characterized in that it forms a rotation prevention part, a locking piece is provided at the tip thereof, and a removable retaining pin is provided at the tip of the threaded part at the other end of the connecting rod. .