A self-propelled and bi-directional drilling drum shearer

Abstract

The invention discloses a self-walking drum shearer capable of drilling bidirectionally, belongs to the technical field of design and application of shearers, and provides a shearer which has the advantages of easiness in butting a drill rod, high drilling power of a drill bit and capability of drilling bidirectionally in a tunnel. The self-walking drum shearer comprises a frame assembly, a walking device, an electric control assembly, a hydraulic assembly, an electric cutting head, a ventilation device, a spiral transmission device, a propelling arm device and a propelling arm butting and moving device, wherein the walking device comprises a hydraulic motor and a caterpillar; the frame assembly is connected with a frame support frame on the walking device through a connecting and fixing device; the electric control assembly, the hydraulic assembly and an armor disk are connected with the frame assembly through pin shafts respectively; the electric cutting head comprises a drum, crab claw scraping plates, a scrapper, a shearer motor, speed reducers and spiral conveyer motors; two crab claw scraping plates, two speed reducers and two spiral conveyer motors are positioned on both sides of the scrapper in the drum. The self-walking drum shearer is mainly applied to coal mines.

Description

technical field [0001] The invention discloses a self-propelled and bidirectional drilling drum type coal mining machine, which belongs to the technical field of coal mining machine design and application. Background technique [0002] At present, in the mining technology of thin and extremely thin coal seams at home and abroad, there are basically blast mining, high-grade general mining, comprehensive mechanized coal mining with drum shearer, comprehensive mechanized coal mining with coal plow, and auger coal mining. Blast mining, high-grade general mining, comprehensive mechanized coal mining with drum shearers, and comprehensive mechanized coal mining with plows all require workers to enter the working face, and single hydraulic props or hydraulic supports are required to support the roof. The equipment is numerous and complex. Large one-time investment. At the same time, due to the small thickness of thin and ultra-thin coal seams, small working space and poor working e...

AI Technical Summary

Problems solved by technology

In 2008, the Xinwen Mining Bureau imported auger shearers from abroad, and successively conducted auger mining tests in the 1203 west drilling face of Nanye Coal Mine and the 1701 working face of Panxi Coal Mine. Many deficiencies: (1) The docking of the drill pipe is difficult, the docking time is long, and the output is low; (2) The drilling power of the drill bit is provided by the helical drill pipe, the torque is large, and the drilling depth is generally 40-50 meters; (3) It is easy to produce Phenomenon of pressure drilling and buried drilling tools; (4) Easy to fall off between two sections of drill pipe; (5) One-sided mining of roadway, high driving rate of 10,000 tons of coal

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