Lifting fastener

Abstract

The present invention relates to a lifting fastener comprising: a body through which a mounting hole is formed; a lifting ring which is connected to the body such that a hook of a crane or a rope is latched; and a coupling nut which is provided inside the lifting ring and, if an object to be lifted has a bolt, is coupled to the bolt. According to the present invention, in addition to the basic function of a transformation preventing portion which supports the structure of the lifting ring so as to increase the tensile strength of the lifting ring, considering that the tensile force increases due to the force of lifting the lifting ring and the weight of the object to be lifted during the lifting, the lifting ring can be prevented from transforming due to the pull toward the coupling nut and a space for the rotation of the coupling nut can be acquired. Moreover, if a coupling hole is provided on the object to be lifted, the object to be lifted is coupled by means of a coupling nut mounted on the lifting fastener. And if a bolt is provided on the object to be lifted, the object to be lifted is coupled by means of the coupling nut while the coupling bolt is separated from the liftingfastener. And if the coupling bolt mounted on the lifting fastener or the bolt provided on the object to be lifted is long, the interfering transformation preventing portion is omitted for effective use.

Description

[0001] Field [0002] The present invention relates to a lifting fastener, and more specifically relates to a lifting fastener for connecting a rope, a crane hook, etc., to a lifting object when lifting the lifting object. Background technique [0003] Recently, with the development of various constructions and construction techniques, there are many cases where a concrete structure that is a heavy object is lifted by a crane and the structure is manufactured. [0004] For example, by using a crane, a prefabricated prefabricated concrete structure is placed in the desired position and fastened to the structure. [0005] At this time, in order to move the concrete structure, it is necessary to temporarily fasten the crane and the concrete structure, so the insertion anchor is buried inside the concrete structure, and after a part of the insertion anchor is exposed to the outside of the concrete structure, the connection with When the eyebolts of the ring are in the state, the ...

AI Technical Summary

Problems solved by technology

[0013] However, in the eyebolt having a semicircular head of the prior art 2, as in the prior art 1, the threaded portion 5 is fixed to the object to be lifted while the hook of a crane or the like is hung on the bolt head 2 . However, the load is concentrated on the bolt head 2, so that both side ends of the above-mentioned bolt head 2 are deformed inwardly, and a solution to this is required.

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