Anchor bolt recycling device

Abstract

The invention discloses an anchor bolt recycling device used for recycling mine tunnel support anchor bolts. The anchor bolt recycling device comprises a drill bit of a hollow cone structure and a spiral drill pipe, the spiral drill pipe of a tubular structure is connected to the upper end of the drill bit, a connector is arranged at the top end of the spiral drill pipe, and a convex spiral line is arranged on the outer surface of the spiral drill pipe. A mandrel with the outer diameter smaller than the bore diameter of an anchor bolt is arranged in the spiral drill pipe, the upper end of the mandrel is fixedly connected in the connector, the lower end of the mandrel is arranged to be a flared elastic forky structure, and the elastic forky structure is enabled to be combined to form a stepped tapered structure. By the structure, the anchor bolts can be removed by means of arranging the lower end of the mandrel to be the flared elastic forky structure and enabling the elastic forky structure to be combined to form the stepped tapered structure; the anchor bolt recycling device is simple in design structure, convenient to operate and use and smooth in slag tapping; meanwhile, the anchor bolts can be recycled completely, material reuse rate is increased, production cost is lowered, and raw materials are saved.

Description

[0001] technical field [0002] The invention relates to a bolt recovering device for recovering mine roadway support bolts, which belongs to the technical field of coal mining equipment. Background technique [0003] With the development and wide application of my country's coal mine underground construction technology, mine roadway support bolts are widely used in coal mines, and the safety production of coal mines has been further guaranteed. However, there are Many scrap bolts that have been used, although these bolts can still be reused, cannot be taken out smoothly from coal seams or rock formations, thus causing waste of materials and increased production costs. Contents of the invention [0004] The technical problem to be solved by the present invention is to provide a bolt recovery device with simple structure, convenient operation and use, and capable of completely taking out the bolts in the mine roadway. [0005] In order to solve the above-mentioned technical...

AI Technical Summary

Problems solved by technology

[0003] With the development and wide application of my country's coal mine underground construction technology, mine roadway support bolts are widely used in coal mines, and the safety production of coal mines has been further guaranteed. However, there are Many used and scrap bolts, although these bolts can still be reused, have not been able to be successfully removed from the coal seam or rock formation, resulting in waste of materials and increased production costs

Images