Integral telescopic structure and telescopic method of cutting mechanism of heading machine

Abstract

The invention belongs to the technical field of cantilever type heading machines, and particularly relates to an integral telescopic structure and method for a cutting mechanism of a heading machine. Comprising a cutting mechanism and a rack, the rack comprises a rack body, two sets of sliding grooves are welded to the left-right symmetrical positions of the front end of the rack body, a lower guide plate and an upper guide plate are installed in the sliding grooves, a telescopic platform is arranged between the sliding grooves in the two sides of the rack body, and an oil cylinder base is arranged at the rear end of the rack body; a telescopic oil cylinder is arranged between an oil cylinder base and a telescopic platform, a slewing mechanism is installed on the telescopic platform through a slewing bearing, slewing oil cylinders are arranged between the two sides of the slewing mechanism and the telescopic platform, the slewing mechanism is hinged to a cutting motor through a pin shaft, the cutting motor is fixed to one end of a connecting cylinder through a bolt, and the other end of the connecting cylinder is connected with a speed reducer. The speed reducer is connected with the cantilever section through a bolt, and the cantilever section is connected with the cutting head. Compared with an original cantilever section telescopic mode, the telescopic device is high in reliability and can be applied to semi-coal rock and rock drifts.

Description

technical field [0001] The invention belongs to the technical field of cantilever roadheaders, in particular to an integral telescopic structure and a telescopic method of a cutting mechanism of a roadheader. Background technique [0002] The cantilever roadheader is a mechanized equipment used for roadway excavation in underground coal mines. The cantilever roadheader relies on the cutting mechanism at the forefront to cut rocks. The legs should be supported on the ground to stabilize the fuselage, relying on the telescopic cantilever section of the cutting part for grooving and swing cutting, but the interior of this telescopic cantilever section is guided by small-sized flat keys. In this case, the cutting part vibrates violently, and the flat key is easily worn and deformed, causing the entire telescopic mechanism to fail. Therefore, hard rock roadheaders are usually not equipped with a telescopic mechanism. When the cutting section is large, it is often necessary to fre...

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Problems solved by technology

[0002]The cantilever roadheader is a mechanized equipment used for roadway excavation in underground coal mines. The cantilever roadheader relies on the cutting mechanism at the front to cut rocks. Forming quality, often before cutting, the loading mechanism and the two rear support legs should support the ground as an auxiliary to stabilize the fuselage, relying on the telescopic cantilever section of the cutting part for slotting and swing cutting, but this telescopic cantilever section uses Small-sized flat key guide, when encountering semi-coal and rock conditions, the cutting part vibrates violently, and the flat key is easily worn and deformed, resulting in failure of the entire telescopic mechanism. Therefore, hard rock roadheaders are usually not equipped with telescopic mechanisms. When the cutting section is large, it is often necessary to frequently adjust the whole machine for cutting, the section is poorly shaped and affects the efficiency of footage

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