Drum shearer cutting part

Abstract

The invention discloses a drum shearer cutting part which comprises a rocker arm shell, a cutting motor, a rocker arm speed reduction box, a planetary gear mechanism and a cutting drum, wherein the cutting motor is directly and transversely arranged in the rocker arm shell, and the motor is fixed in the rocker arm shell through a bolt. A cutting part mechanical transmission comprises a rocker arm speed reduction box and a planetary gear speed reduction mechanism which are independent transmission parts. When a hard waste rock clamping coal bed shearer cutting part works, an output shaft of the cutting motor transmits power to the rocker arm speed reduction box, the power is transmitted to the cutting drum after subjected to speed reduction through a five-grade cylindrical gear and the planetary gear transmission, the cutting drum is linked with an output shaft of the planetary gear speed reducer by adopting a square connecting sleeve, with the advantages of reliability in linkage and convenience for disassembly. The cutting part has a simple and compact integral structure, strong exploitation capacity due to the adoption of the special strong hard waste coal bed clamping coal bed cutting drum, can be used for exploiting a waste coal clamping coal bed with a coal rock firmness exploitation efficiency f of less than 6 and meets the demands of exploitation of an underground hard waste coal clamping coal bed, thus the exploitation efficiency of the hard waste coal clamping coal bed and the exploitation recovery rate of coal resources are increased.

Description

technical field [0001] The invention relates to a cutting part of a coal mining machine, in particular to a cutting part of a mining drum type coal mining machine which is suitable for a hard coal seam with mixed gangue in a coal mine. Background technique [0002] my country is the largest coal producer and consumer in the world. With the economic growth, the demand for coal is increasing. Due to the complex geological structure of our country, the coal is generally poor, the proportion of gangue coal seams and hard gangue coal seams is relatively large, and mining is relatively difficult. Many hard gangue coal seams have not been mined and utilized due to technical reasons, resulting in a waste of coal resources. . At present, the drum of the general drum shearer is cylindrical, and the helical blades are welded on the drum, and the overall rigidity and strength are insufficient, so it is difficult to realize the mining of gangue coal seams. In order to ensure the sustai...

AI Technical Summary

Problems solved by technology

Due to the complex geological structure in our country, the coal is generally poor, the proportion of gangue coal seams and hard gangue coal seams is relatively large, and mining is relatively difficult. Many hard gangue coal seams have not been mined and utilized due to technical reasons, resulting in a waste of coal resources.

At present, the drum of the general drum shearer is cylindrical, and the helical blades are welded on the drum. The overall rigidity and strength are insufficient, and it is difficult to realize the mining of gangue coal seams.

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