Heading machine cutting part with high-strength telescoping mechanism

Abstract

The invention discloses a heading machine cutting part with a high-strength telescoping mechanism. The heading machine cutting part comprises a cutting head, a cutting reducer, a cutting motor, a cutting arm, a motor rack, a cutting motor sleeve and a telescopic cylinder, wherein the cutting motor is arranged in the motor rack; the cutting arm comprises a cutting spindle; the cutting head is rigidly connected with the cutting spindle of the cutting arm by virtue of a high-strength bolt; the cutting arm is connected to the cutting reducer by virtue of a connecting bolt; a cylinder seat of the telescopic cylinder is arranged on the motor rack, and a piston rod of the telescopic cylinder is connected with an outer arm of a cutting motor sleeve; the cutting motor is fixedly arranged in the cutting motor sleeve; the cutting motor sleeve is arranged in the motor rack in a sleeving manner; and the cutting motor sleeve can slide along the axis of the motor rack. According to the heading machine cutting part disclosed by the invention, the cutting motor, the cutting reducer, the cutting arm and the cutting head form a complete transmission system, the cutting motor sleeve and the motor rack form a high-strength telescoping mechanism, telescoping is realized under the action of the telescopic cylinder, the reliability is high, and the dynamic and static load resistance is high.

Description

technical field [0001] The invention relates to a cutting part of a roadheader, in particular to a cutting part of a roadheader with a high-strength telescopic mechanism. Background technique [0002] The design concept of the cutting part of the soft rock roadheader is mainly based on improving the cutting efficiency and shipping efficiency. Its telescopic mechanism limits the cutting hardness of the cutting part. The cutting efficiency of the cutting part is aimed at improving the cutting hardness of the cutting part. As a result, in actual production conditions, the cutting part of the soft rock roadheader encounters hard rock, the cutting efficiency drops greatly, and the telescopic part fails The efficiency is improved, and the service life of the whole machine is greatly reduced. However, when the cutting part of the hard rock roadheader encounters soft rock, the cutting efficiency cannot be improved. The main structure of the cutting part of existing telescopic form ...

AI Technical Summary

Problems solved by technology

The relative telescopic movement of the cutting spindle and the spline sleeve ensures the continuity of the transmission system, and the three-layer sleeve structure is the holding structure of the telescopic part, and the three-layer telescopic sleeve structure is limited by the size of the cutting head, so it cannot be increased. Thick, complex internal structure, resulting in the size of the large bearing structure in the front section of the telescopic part cannot be enlarged, which becomes a weak link in the transmission system. Under extremely harsh working conditions, the telescopic sleeve has insufficient holding force and is easy to deform or assemble Failure, resulting in shortened or damaged life of the large bearing in the front section, causing the transmission system of the entire telescopic part to fail

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