A crushing device for a coal mine shearer

By designing crushing components on the coal mining machine, high-frequency multi-stage crushing of large coal blocks is achieved, solving the problem of poor crushing effect of drum-type coal mining machines, improving the crushing efficiency and coal transportation efficiency of the coal mining machine, and ensuring the continuity of coal mining operations.

CN121519927BActive Publication Date: 2026-07-14CHINA UNIV OF MINING & TECH +4
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA UNIV OF MINING & TECH
Filing Date
2025-12-01
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

Existing drum-type coal mining machines are ineffective at crushing large coal blocks, resulting in low coal mining efficiency, low coal transportation efficiency, and easy blockage of the conveyor, which affects the continuity of coal mining operations.

Method used

A crushing assembly was designed, including an articulated arm, a hydraulic cylinder, a dual-axis motor, and a crushing roller. Through high-frequency multi-stage crushing, combined with an arc plate and a vibration damper, it achieves multiple impacts and crushing of large coal blocks, enhancing the crushing force and range, and protecting the crushing roller.

Benefits of technology

It improved the crushing efficiency of large coal blocks, reduced blockages, ensured the continuity of coal mining operations and overall mining efficiency, reduced the failure rate during transportation, and improved coal transportation efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present application provides a kind of crushing device for coal mining machine, belong to coal mining technical field.The hinged arm and hydraulic cylinder of hinged in the one side of coal mining machine body are included, the one side of the hinged arm is equipped with connecting block one, the telescopic end of the hydraulic cylinder is hinged with connecting block one, the one end of the hinged arm away from the coal mining machine body is rotatably equipped with double-shaft motor, and one output end of the double-shaft motor is fixed with crushing roller.The present application can carry out high-frequency multistage crushing to large coal block by setting crushing assembly, increase the intensity and range of crushing, improve the crushing efficiency of large coal block, effectively reduce the residue of large coal block, so that the crushed coal block can smoothly pass through scraper conveyor and be transported outward, reduce the failure rate in the process of transportation, improve the coal transportation efficiency, reduce the downtime of coal mining machine body due to large coal block blockage, and ensure the continuity of coal mining operation and overall mining efficiency.
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