Efficient block mining machine

Abstract

The invention relates to coal-mining tunneling equipment for mines and particularly relates to an efficient block mining machine. The mining machine comprises a machine body, wherein the machine body comprises a machine frame, a guide device and a travelling device. The efficient block mining machine further comprises an impact blanking mechanism, wherein the impact blanking mechanism comprises a shovel head or a chisel head; the impact blanking mechanism further comprises an impact stroke device and an impacting device; the impact stroke device is in slide connection with the guide device; the guide device is arranged on the impacting device and / or the machine frame; the impact stroke device slides forwards and backwards along the guide device; the shovel head or the chisel head is arranged at the front part of the impact travelling device; the impacting device impacts the impact stroke device and the shovel head or the chisel head; the impact blanking mechanism is arranged on the machine body; and the travelling device drives the machine body to travel.

Description

technical field [0001] The invention relates to a mine coal mining excavation equipment, in particular to a high-efficiency block mining excavator. Background technique [0002] The currently widely used coal mining excavation equipment is mainly the drum shearer. Its working principle is milling type blanking, which determines that the crushing of this coal mining method is relatively large, especially in the state of compressive stress, which consumes a lot of energy, reduces productivity and block rate, and produces a lot of dust during the crushing process, causing Problems such as harsh mining environment and potential safety hazards have been eliminated. To sum up, the currently commonly used drum shearer mainly has the following defects in the process of use: (1) low lump material rate; (2) much dust, polluting the environment; (3) milling of the cutting part is relatively broken, power consumption Larger, there is a lot of resource waste, low work efficiency, and h...

AI Technical Summary

Problems solved by technology

Its working principle is milling type blanking, which determines that the crushing of this coal mining method is relatively large, especially in the state of compressive stress, which consumes a lot of energy, reduces productivity and block rate, and produces a lot of dust during the crushing process, causing The poor mining environment and other problems and potential safety hazards

To sum up, the currently commonly used drum shearer mainly has the following defects in the process of use: (1) low lump material rate; (2) much dust, polluting the environment; (3) milling of the cutting part is relatively broken, power consumption Large, there is a lot of waste of resources, low work efficiency, high cost

Its defect is: when one impact arm fixes one impact head, one impact head has no wide shovel surface and thus cannot rush out of a wider coal mining face, so the coal mining body cannot pass through to realize continuous coal mining , when driving multiple impact heads for reciprocating impact, the multiple impact heads need to be set on the connecting rod hinged with the crankshaft, the rotation of the crankshaft drives the multiple impact heads to reciprocate impact, and the multiple impact arms form a long length perpendicular to the same crankshaft The reaction force of multiple shearing and twisting arm of the hinged connecting rod, impacting the coal seam, etc. directly acts on multiple connecting rods perpendicular to the crankshaft and hinged with the crankshaft, so that the connecting rods shear and twist the crankshaft, causing the transmission mechanism to deform easily. In addition, the rear part of the impact head has no shape and structure for large-scale cleaning of the coal mining surface. The arrangement and shape of its multiple impact heads are too large for coal mining. The structure of multiple impact heads Complicated operation is difficult to control, too many reaction force points cause high damage frequency, and in actual use, the maintenance time is longer than the working time, resulting in a great waste of manpower, material resources, time, etc.

Its working principle is drilling tunneling, which determines that the grinding and crushing of this tunneling method is relatively large, especially in the state of compressive stress, which consumes a lot of energy and reduces the productivity of tunneling. The advancement of the drill bit is completed by the walking of the fuselage , in order to make the drill bit drill quickly and speed up the progress of the excavation, the thrust of the fuselage is continuously increased, causing greater damage to the fuselage. The fundamental defect is that the drill bit only grinds and drills and cannot impact the excavation.

[0006] The patent application number is 201210006183.9, and the name is "reciprocating impact drilling machine". , the kinetic energy absorption of reciprocating impact consumes a lot, so the energy consumption is too large, the practical work is small, and because the drill bit slides back and forth, the forward propulsion force is weakened during the rotation of the drill bit, which reduces the effect of part of the rotating action on the material , causing the drilling force of the drill bit to decrease during the return stroke of the reciprocating impact action

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