Full-seam mining coal mining machine and coal mining method

Abstract

The invention discloses a full-seam mining coal mining machine and a coal mining method, and belongs to the technical field of coal mining. The full-seam mining coal mining machine comprises a main machine frame, an upper cutting device, a lower cutting device and a turning device, the upper cutting device and the lower cutting device are mounted on the main machine frame, the upper cutting deviceis connected with the main machine frame through the turning device, the turning device comprises a power mechanism, a rotating arm is arranged at the output end of the power mechanism, when the coalmining machine cuts coals to the end, the power mechanism acts to drive the rotating arm to rotate, and then, the upper cutting device is driven to rotate together; and the upper cutting device comprises a cutting head, a cutting arm, a telescopic cylinder, angle modulation oil cylinders and a rotating part, the rotating part is connected with the rotating arm, the cutting head is tapered, the rear end of the cutting head is connected with the cutting arm, and the rear end of the cutting arm is connected with the telescopic cylinder. According to the full-seam mining coal mining machine and the coal mining method, turning and moving of a cutting part can be realized by using the turning device, cutter-entering coal cutting can be continuously carried out during returning, cutter-empty return is avoided, reciprocating and bidirectional coal cutting can be realized, the working efficiency is improved, and energy consumption can be reduced.

Description

technical field [0001] The invention belongs to the technical field of coal mining, and in particular relates to a coal mining equipment and a coal mining method. Background technique [0002] At present, my country's coal mechanized mining technology is mainly divided into two categories: top-coal caving and full-height mining. At present, domestic mines mostly adopt the mining method of top-coal caving for coal seams above 4m or medium thickness. For some relatively narrow faults or ultra-short working faces, due to the limited activity space, the original equipment cannot fully function, resulting in a waste of resources to a large extent, and the mining efficiency of the original blast mining method is not high. It also has great damage to people's health. That is, at this stage, there is a lack of a full-height coal mining equipment with a compact and flexible structure, high mining efficiency, and adaptable to narrow and complex environments. Not only that, the exis...

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Problems solved by technology

[0003] Shanxi Coal Group has developed a shearer based on tensile stress coal breaking based on this theory, but its coal mining method is one-way coal cutting, which is less efficient than two-way coal cutting

[0004] To sum up, the existing double-drum shearer is huge in size and clumsy in structure, and it is not easy to enter the narrow working face for coal mining; using the principle of compression and shearing to break coal consumes significantly more energy than using tensile stress to break coal

At present, coal shearers based on tensile stress can only cut coal in one direction, and return to the empty knife after cutting to the end, which is inefficient and needs to be improved in terms of coal mining efficiency and energy consumption.

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