Anchor bolt recycling device

A technology for recovering device and bolt, which is applied in the installation of bolt, mining equipment, earth-moving drilling, etc., and can solve the problems of increase in height, waste of material production cost, and inability to take out smoothly.

Inactive Publication Date: 2014-01-22
ZHENJIANG ANDA COAL MINE SPECIAL EQUIP
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  • Abstract
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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

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Embodiment Construction

[0011] The anchor rod recovery device of the present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0012] As shown in the figure, the anchor rod recovery device of the present invention includes a drill bit 1 of a hollow conical structure and an auger rod 2 of a tubular structure connected to the upper end of the drill bit. The top end of the auger rod 2 is provided with a connector 3, and the auger rod 2 The outer surface is provided with a raised helix 4; the auger rod 2 is provided with a core rod 5 whose outer diameter is smaller than the inner diameter of the anchor rod, the upper end of the core rod 5 is fixedly connected in the connector 3, and the lower end of the core rod 5 The elastic bifurcation structure is set to expand outwards, and the elastic bifurcation structure is closed to form a tapered structure with steps.

[0013] Further, the surface of the pipe body of the auger rod 2 also...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D20/00
Inventor 朱正东郭建华
Owner ZHENJIANG ANDA COAL MINE SPECIAL EQUIP
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