Coal mining tunneling method
A technology for coal mines and cutting heads, applied in the field of coal mining, can solve problems such as tool wear, and achieve the effect of improving service life and reducing wear and tear.
Pending Publication Date: 2021-05-28
吴华实
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Problems solved by technology
[0005] The invention provides a coal mining excavation device and an excavation method thereof, which have the advantages of light coal mining tool wear and long service life, and solve the problem of severe tool wear
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[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0027] see Figure 1-5 , a coal mining excavation device and its excavation method, comprising a cutting head 1, a drill bit 2 is fixedly installed on the front end of the cutting head 1, a main shaft 3 is set in the middle of the cutting head 1, and a spring 4 is fixedly installed on one end of the main shaft 3, The outer surface of one end of the main shaft 3 is movable with a main shaft sleeve 5, and the outer surfaces of the main shaft 3 and the main shaft...
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The invention relates to the technical field of coal mining, and discloses a coal mining tunneling method. The coal mining tunneling method comprises a cutting head, wherein circular cutters of first pressing cutters are arranged in a splayed shape and are matched with digging cutters in a staggered mode, so that when a cutting head moves towards the periphery to enlarge the diameter of a mine hole, the coal mine is broken to generate a gap under the extrusion action of the circular cutters in the first pressing cutters, the coal mine is dug out through the coal digging action of the digging cutters, abrasion to the cutters is reduced, the service life of the cutting head is prolonged, meanwhile, the coal mine at crushing grooves is not dug, under the action of the cutting head with the conical front end, a spring still makes contact with and collides with the coal mine in the moving process, telescopic vibration is caused, a transmission sleeve is driven to swing, and then second pressing cutters are pushed to stretch out and draw back, and meanwhile, the coal mine in the crushing grooves are crushed and broken, the first pressing cutters arranged on the surface of the crushing grooves crush the coal mine in different directions, so that the coal mine does not need to be excavated in a layer-by-layer grinding mode, and abrasion to cutters is reduced.
Description
technical field [0001] The invention relates to the technical field of coal mining, in particular to a coal mining driving method. Background technique [0002] Coal mine excavation is the basic project of coal production and construction. In recent years, the mechanization of coal mine excavation in my country has been developed rapidly, and the level of equipment has also been greatly improved. The roadheader is mainly used for excavating underground roadways. It is mainly composed of walking mechanism and It is composed of working, shipping and reloading mechanisms. The cutting head at the position of the working mechanism can destroy the coal mine in front, and then excavate and transport the coal mine. [0003] During the working process of the cutting head of the existing roadheader, the main shaft drives the cutting head to rotate, and the drill bits arranged in a spiral shape on the outer surface of the cutting head come into contact with the coal mine layer under the...
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IPC IPC(8): E21C25/06E21C27/20E21C35/00
CPCE21C25/06E21C27/20E21C35/00
Inventor 不公告发明人
Owner 吴华实