Ultralow surface full-hydraulic drill type coal mining machine

Abstract

The invention discloses an ultralow surface full-hydraulic drill type coal mining machine, belonging to the technical field of coal mining machinery. The ultralow surface full-hydraulic drill type coal mining machine comprises an electric control assembly, a hydraulic assembly, a drill assembly, a ventilating device, a transmission device and a frame, wherein the transmission device comprises a driving frame, a front moving box, a motor, a twin plunger pump and a driving motor; the motor is connected with the driving motor by the twin plunger pump; the driving motor is connected with the front moving box by an output shaft; the front moving box is connected with a drill bit; the frame comprises a left side frame, a right side frame, a front frame and a connecting beam; the left side frame and the right side frame are connected with the connecting beam by using high-strength bolts; and the front frame is connected with the left side frame and the right side frame by using pin shafts. The ultralow surface full-hydraulic drill type coal mining machine disclosed by the invention has the advantages of reducing the height of the whole machine, reducing roadway excavation cost, extracting coal rocks without damaging a bottom plate, increasing the utilization rate of coal resources and reducing the cost per ton of mined coal.

Description

technical field [0001] The invention relates to a coal mining machine product, in particular to an ultra-low-surface full-hydraulic drilling coal shearer, which belongs to the technical field of coal mining machines. Background technique [0002] From the perspective of the total coal reserves in the country, thin and extremely thin coal seams are widely distributed in China. More than 80 of the 95 key mining bureaus in the country have thin and extremely thin coal seams. The national key state-owned coal mines are thinner than extremely thin coal seams Reserves are 2.529 billion tons. At present, the equipment used for mechanized mining of thin and extremely thin coal seams mainly includes: 1. Thin coal seam drum shearer: mainly divided into bottom-climbing and riding-sliding shearers, of which riding-sliding The shearer is suitable for thin coal seams with a coal seam thickness greater than 0.8 meters, while the floor climbing shearer body is located in the machine path op...

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Problems solved by technology

[0002] From the perspective of the total coal reserves in the country, thin and extremely thin coal seams are widely distributed in China. More than 80 of the 95 key mining bureaus in the country have thin and extremely thin coal seams. The national key state-owned coal mines are thinner than extremely thin coal seams Reserves are 2.529 billion tons. At present, the equipment used for mechanized mining of thin and extremely thin coal seams mainly includes: 1. Thin coal seam drum shearer: mainly divided into bottom-climbing and riding-sliding shearers, of which riding-sliding The shearer is suitable for thin coal seams with a coal seam thickness greater than 0.8 meters, while the floor climbing shearer body is located in the machine path opened by the drum with a low machine surface height, which can be used to mine thin coal seams of 0.6 to 0.8 meters; The coal machine has poor coal loading effect and complex structure. This equipment is not suitable for extremely thin coal seams below 0.6 meters; 2. Coal plow: its main defect is that the power of the plow is relatively small, and the ability to plow hard coal and soft rock is poor , the operation reliability is low, and the equipment slides seriously when the inclination angle is greater than 10°, and the failure rate and reliability of the coal plow itself have problems; Drive the coupler and drive the form of the reducer, so that the overall height of the machine can reach more than 1.6 meters. Therefore, when mining coal and rock, the height of the roadway must be increased, which increases the cost of roadway excavation.

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