Removal device for metal expansion bolt

Abstract

The invention provides a removal device for a metal expansion bolt. The removal device for the metal expansion bolt comprises an operating handle. The lower surface of the operating handle is connected with a threaded ejection rod provided with external threads. The outer side of the middle portion of the threaded ejection rod is connected with an internal threaded sleeve in a threaded mode. Two removal mechanisms are symmetrically hinged to the two sides of the outer circumferential surface of the internal threaded sleeve correspondingly, wherein the outer side edge of the lower portion of the threaded ejection rod is wrapped with the middle portions of the removal mechanisms, the lower portions of the removal mechanisms can be inserted into the space between a bolt part and a sleeve part of the metal expansion bolt mounted in a fixing structure, and the removal mechanisms are used for removing the sleeve part from the fixing structure. The removal device for the metal expansion bolt is simple in structure and convenient to manufacture and use, the expansion bolt can be removed from a mounting position easily and completely, no residue is left, a fracture surface is flush with the structure, and subsequent construction is facilitated.

Description

technical field [0001] The invention relates to a bolt puller. In particular, it relates to a metal expansion bolt puller used for pulling out installed metal expansion bolts. Background technique [0002] Metal expansion bolts are more commonly used installation and fixing devices in industrial sites and daily life. They can be fixed through the cooperation of bolts and outer sleeves, eliminating the need for embedded parts and improving the flexibility of construction. However, in the process of use, once the installation position changes, the expansion bolts need to be removed. In the actual construction process, there is no special tool, which makes it difficult to remove the expansion bolts. The expansion bolts are often left in the structure by cutting them off with a cutting machine. , because a cutting machine is used to cut off the bolts, sharp cuts must be left, and it is difficult to achieve the leveling of the section and the structural surface, which is prone t...

AI Technical Summary

Problems solved by technology

However, in the process of use, once the installation position changes, the expansion bolts need to be removed. In the actual construction process, there is no special tool, which makes it difficult to remove the expansion bolts. The expansion bolts are often left in the structure by cutting them off with a cutting machine. , because a cutting machine is used to cut off the bolts, sharp cuts must be left behind, and it is difficult to achieve the leveling of the section and the structural surface, which is prone to scratches and bumps, which will also interfere with subsequent construction

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