Control method for automatic height adjustment of coal cutter rollers

Abstract

The invention discloses a control method for the automatic height adjustment of coal cutter rollers. The method comprises the following steps: a front hydraulic lifting platform is arranged at the front part of a coal cutter body; a rear hydraulic lifting platform is arranged at the rear part of the coal cutter body; a front lifting oil cylinder is arranged below the front hydraulic lifting platform; a rear lifting oil cylinder is arranged below the rear hydraulic lifting platform; a first displacement detection unit is arranged on the front hydraulic lifting platform; a second displacement detection unit is arranged on the rear hydraulic lifting platform; a first height adjustment oil cylinder is arranged on a front swing arm; a rear height adjustment oil cylinder is arranged on a rear swing arm; a first height detection unit is arranged on a front cutting roller; and a second height detection unit is arranged on a rear cutting roller. The height adjustment control method has the advantages of reasonable design, simplicity, fastness and accuracy in the diagnosis of the cutting condition of coal cutters in various exploitation positions, realization of automatic real-time control of the height adjustment of the coal cutter by automatically adopting a corresponding height adjustment control scheme, and realization of remote monitoring of the coal cutter.

Description

technical field [0001] The invention relates to the technical field of coal mining machinery, in particular to a control method for automatic height adjustment of a coal mining machine drum. Background technique [0002] At present, in terms of the automatic height adjustment control of the shearer drum, except for a few advanced shearer manufacturers at home and abroad who use the storage cutting mode for height control, most of them rely on manual operation to adjust the height of the drum, that is, the operator relies on personal vision. , and combined with the cutting noise to judge whether the shearer drum is cutting coal or rock, so as to adjust the vertical position of the drum. [0003] However, due to the large amount of coal dust produced by the shearer during the working process, the visibility of the working face is reduced, and the noise of the machine itself is very loud. It is difficult for the operator to accurately and timely judge the cutting status of the ...

AI Technical Summary

Problems solved by technology

[0003] However, due to the large amount of coal dust produced by the shearer during the working process, the visibility of the working face is reduced, and the noise of the machine itself is very loud. It is difficult for the operator to accurately and timely judge the cutting status of the shearer and make reasonable operations in time

Cutting the rock will reduce the service life of the pick and increase the gangue content in the coal; or reserve too much top and bottom coal, resulting in waste of resources; at the same time, manual operation may make the top and bottom plates uneven, causing frame shifting and Difficulty pushing