While-drilling casing directional drilling device for soft coal seam under coal mine

Abstract

The invention discloses a while-drilling casing directional drilling device for a soft coal seam under a coal mine. The while-drilling casing directional drilling device for the soft coal seam under the coal mine comprises a casing body. Two vertically distributed lifting vertical plates are symmetrically mounted on the inner side of the top of the casing body. Two gear driving mechanisms which are matched with the lifting vertical plates are symmetrically mounted on the outer side of the top of the casing body. A guide connecting seat is horizontally mounted on the tops of the two lifting vertical plates, and a bit pressure driving seat is mounted on the guide connecting seat. A drilling connection mechanism is vertically mounted at the center of the bottom of the bit drilling pressure driving seat, a drilling rod is connected to the bottom of the drilling connection mechanism, and a guide clamping mechanism is mounted at the bottoms of the lifting vertical plates. The while-drillingcasing directional drilling device for the soft coal seam under the coal mine can automatically apply force to the drilling rod, manpower is saved, meanwhile, different types of drilling rods can be replaced according to the sizes of drilled holes, and under the action of the guiding clamping mechanism, the good positioning guidance effect on the movement of the lower part of the drilling rod is achieved, and the situation that the drilling rod is oblique during drilling is avoided.

Description

technical field [0001] The invention belongs to the field of coal mine equipment, and in particular relates to a directional drilling device for casing while drilling in an underground soft coal seam of a coal mine. Background technique [0002] Coal mines are areas where human beings exploit coal resources in coal-rich mining areas, and are generally divided into underground coal mines and open-pit coal mines. [0003] In the current casing-while-drilling device technology for soft coal seams in coal mines, most of the casings and drill pipes are fixed, and the structure is relatively simple, so that when drilling soft coal seams, not only Manpower is required to apply force, and when drilling, it is not possible to replace different types of drill pipes according to the size of the hole to be drilled, and to limit the bottom of different types of drill pipes, resulting in skewing of the drill pipe when drilling For this reason, we have designed a directional drilling devi...

AI Technical Summary

Problems solved by technology

[0003] In the current casing-while-drilling device technology for soft coal seams in coal mines, most of the casings and drill pipes are fixed, and the structure is relatively simple, so that when drilling soft coal seams, not only Manpower is required to apply force, and when drilling, it is not possible to replace different types of drill pipes according to the size of the hole to be drilled, and to limit the bottom of different types of drill pipes, resulting in skewing of the drill pipe when drilling Therefore, we have designed a directional drilling device for casing while drilling in soft coal seams in coal mines to solve the above problems.

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