Hook nail for underground roadway midline point

Abstract

The invention is mainly used in the technical field of mining roadway measurement, and particularly relates to a hook nail for the centerline point of an underground roadway, which includes a fixed sleeve, the fixed sleeve includes a conical tube, and the end of the conical tube is provided with a flanging. The steel wire runs through the tapered pipe, and both ends are placed outside the tapered pipe. The bottom of the steel wire is provided with a hanging coil, and the bottom of the hanging coil is provided with an outwardly protruding protrusion. The present invention can change the phenomenon that the iron nails hang on the wires are not firm and easy to fall off, ensure the firmness of the points, reduce the number of times of hanging the wires, and reduce the need to measure the points due to re-hanging the wires, and reduce the workload of the measuring personnel ,Improve work efficiency. The stability of the point is improved, the structure is simple, the manufacture is easy, and the expense is saved.

Description

technical field [0001] The invention relates to a hook nail for a centerline point of an underground roadway, which is mainly used in the technical field of mining roadway measurement. Background technique [0002] When laying control points and centerline points in underground roadways, ordinary iron nails are usually used to hang the wires. When hanging heavy objects or being shaken by blasting, they often fall down and need to be buried again, which increases the workload and causes the resources to be reused. Production costs and labor intensity of workers. And it is necessary to re-measure the points, which increases the inaccuracy, affects the progress and quality of the project, and affects the benefits of the enterprise. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a hook nail for the centerline point of an underground roadway with a simple, reasonable and stable structure, which reduces the workload ...

AI Technical Summary

Problems solved by technology

[0002] When laying control points and centerline points in underground roadways, ordinary iron nails are usually used to hang the wires. When hanging heavy objects or being shaken by blasting, they often fall down and need to be buried again, which increases the workload and causes the resources to be reused. Production cost and labor intensity of workers

And it is necessary to re-measure the points, which increases the inaccuracy, affects the progress and quality of the project, and affects the benefits of the enterprise

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