Cutting mechanism of high-pressure water jet assisted heading machine

Abstract

The invention provides a cutting mechanism of a high-pressure water jet assisted heading machine, solving the problems that the design scheme of an existing high-pressure water jet technology is not reasonable and perfect, so that the jetting and the cutting are not well matched, and the excellent auxiliary effect can not be achieved. The cutting mechanism of the high-pressure water jet assisted heading machine comprises a cutting head shaped as a cone body, wherein the top end of the cone body is in a spherical shape, a plurality of cutting teeth are fixedly arranged on the surface of the cutting head, extend along a spiral curve from the top end of the cone body to the back end of the cone body, tooth tips of the plurality of cutting teeth are continuously distributed in a turning direction along the trend of a spiral curve on the conical surface, nozzles are fixedly forwards arranged at root parts of the cutting teeth, which are fixedly connected with the cutting heads, conveying channels communicated with the nozzles are arranged inside the cutting heads, and the jet direction of the nozzles is consistent with the cutting direction of the cutting teeth. According to the cutting mechanism, the stress of the cutting teeth can be reduced, the coal and rock are effectively crushed; the cutting teeth can be cooled, the service life is prolonged; the dust can be reduced, sparks can be inhibited, and the safety is improved; and the lumpiness of coal can be improved, and the economic benefit is increased.

Description

technical field [0001] The invention belongs to the technical field of coal mining equipment, and relates to a cutting device for coal and rock, in particular to a high-pressure water jet auxiliary roadheader cutting mechanism. Background technique [0002] In recent years, with the rapid development of my country's coal industry, the inseparable coal machinery industry has also received increasing attention. The cutting of coal and rock has always been an engineering technical problem. There are many deficiencies in the cutting of existing roadheaders, which are specifically: the pick and the tooth seat are seriously damaged during the operation, resulting in a short service life of the cutting head; And during the operation, the vibration of the fuselage is relatively large, and the dust is relatively large during cutting. These factors restrict the development of coal and rock cutting technology. [0003] High-pressure water jet technology is a new technology developed i...

AI Technical Summary

Problems solved by technology

[0004] However, the design scheme of the high-pressure water jet technology used in the prior art is not reasonable and perfect, so that the jet flow and cutting do not achieve a good cooperation, and the expected auxiliary effect cannot be achieved in the high-speed rotating operation, and the high-pressure water jet flow cannot be fully utilized. Application effect of technology

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