JPH0242828Y2 - - Google Patents

Description

[Detailed explanation of the invention] Industrial field of use In a construction method that compacts poured concrete by applying vibration to the formwork using a vibrator,
This invention relates to a formwork fastening hardware that prevents the butterpipe and the formwork fastening hardware from loosening due to vibration.

Conventional technology This is an unprecedented technology.

Problems that the invention aims to solve When compacting the fresh concrete by applying vibration to the formwork after pouring fresh concrete, loosening occurs between the batapipe that tightens the formwork and the metal fittings used to fasten the formwork. However, to eliminate the loosening, you can manually tighten the nut again.
The disadvantage is that the concrete surface is not flat and uneven due to the different degrees of tightening.

The present application is an invention to solve this loosening problem.

Means to Solve the Problem: A body made of resilient rubber or synthetic resin is used at both ends of the main body, which fastens the butterpipe to the formwork, with a long arc shape on the outside, a roughly three-shape shape on the inside, and a roughly arc shape in cross section. By fixing an elastic material such as M.I.C. or the like protruding from the inner end surface, the elastic material is brought into contact with the butterfly pipe, and a tightening bolt is tightened with a nut to form a formwork.

Example: The outside has a long arc shape 1a, and the inside has a nearly 3-shaped shape 1b
In the main body 1 which is cut into a shape and press-worked to have a cross-section having a substantially semicircular arc shape 1c, an elastic material such as a hard or relatively hard resilient material made of rubber or synthetic resin is placed inside both ends of the main body 1. 2 protrudes from the inner end surface and is fixed.

A hole 4 is drilled in the center of the main body 1, into which the tightening bolt 3 is inserted, and a nut 5 is screwed into the hole 4, and the threaded end of the tightening bolt 3 is crushed to tighten the nut. 5 is prevented from falling out.

3a is a nut part for attaching a round separator, a P connector, a wooden connector, etc.

6 is Bata pipe, 7 is vibrator, 8 is Bata material, 9
indicates the formwork.

Function The formwork 9 is assembled through the bata material 8 and the bata pipe 6, and finally the two recesses in the shape of the three-figure 1b of the main body 1 are inserted into the tightening bolts 3 protruding from between the two bata pipes 6. are brought into contact with the butterfly pipes 6, respectively, and tightened and fixed with the nuts 5. Therefore, the main body 1 does not come into direct contact with the Bata pipe 6, but the elastic material 2 comes into contact with the Bata pipe 6 and is tightened. 1 and the nut 6 that fixes it will not loosen.

Effects of the invention By tightening the nut by bringing the batapipe into contact with the main body through an elastic material, the nut does not loosen even when vibrations are applied, and it is possible to perform complete compaction using the vibrator. be.

[Brief explanation of the drawing]

Figure 1 is a perspective view of the formwork fastening hardware of the present application;
The figure is a sectional view taken along the - line in FIG. 1, and FIG. 3 is an explanatory view of the state of use.

Claims (1)

[Scope of utility model registration request] The outside of the Bata pipe is fastened to the formwork.The outside has a long arc shape, the inside has an approximately three-shape shape, and the cross section is approximately a semicircular arc.Both ends of the main body are made of elastic material such as rubber or synthetic resin. A formwork fastening hardware that protrudes from the end face and is fixed.