Nail puller for wooden formwork of building external wall

Abstract

The invention discloses a nail pulling device for a wooden board. A nail puller for a wooden formwork of a building external wall comprises a U-shaped support, a handle section and a supporting section, wherein the supporting section is rotatably arranged on the support through a hinge pin, a nail pulling part is arranged at the tail end of the supporting section and consists of a connection section and a nail pulling section which are connected mutually, the upper surface of the nail pulling section is a horizontal plane, the lower surface of the nail pulling section is an oblique plane, an acute angle is formed by the horizontal plane and the oblique plane, and an arc-shaped groove for a steel nail body to pass through is formed in the tail end of the nail pulling section in the direction where the end face of the nail pulling section points to the connecting section. Firstly, the sharp ends formed by the upper surface and the lower surface are obliquely inserted into the timber surrounding a steel nail head till most of the nail body is arranged into the arc-shaped groove; secondly, the handle section swings to enable the bottom face of the support to be completely in contact with the surface of a wooden board, a lever principle is utilized to continue to press down the handle section so as to take the whole steel body of the steel nail out of the wooden board completely, and then it is ensured that the wooden board can be repeatedly used. Compared with a traditional nail pulling device, the nail puller is quicker and more efficient.

Description

technical field [0001] The invention relates to the field of recycling wooden formwork for exterior walls, in particular to a wooden nail pulling device. Background technique [0002] When pouring the foundation of a building, wood formwork or steel formwork is required for external fixing and molding, and wood formwork is more widely used than steel formwork because of its lower cost. When the wood formwork is fixed, the drawing screw is mainly used for overall fixing, and the steel nail is used for auxiliary fixing. After the poured concrete is solidified, the wooden formwork needs to be dismantled, but a large number of steel nails will remain on the wooden formwork composed of wooden boards, and many steel nails are easily scratched or nailed during the disassembly process. Wearing the feet of the construction workers on the construction site, and the excessive residue of steel nails are not conducive to the next fixed use of the wooden board. Contents of the inventio...

AI Technical Summary

Problems solved by technology

After the poured concrete is solidified, the wooden formwork needs to be dismantled, but a large number of steel nails will remain on the wooden formwork composed of wooden boards, and many steel nails are very easy to be scratched or nailed during the disassembly process. Wearing the feet of construction workers on the construction site, and too many steel nails are not conducive to the next fixed use of wooden boards

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