A hydraulic protection mechanism for a coal mining roadway

By designing a hydraulic protection mechanism for coal mine roadways, the extension and retraction of the transmission column and scissor frame driven by a motor, combined with the meshing of the telescopic rod and toothed plate, solves the problem that existing hydraulic protection mechanisms cannot protect against landslides on both sides of the roadway. It achieves stable support and protection for both sides of the roadway and is adaptable to roadway top protection at different heights.

CN120720042BActive Publication Date: 2026-06-05TAIYUAN INST OF CHINA COAL TECH & ENG GROUP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
TAIYUAN INST OF CHINA COAL TECH & ENG GROUP
Filing Date
2025-08-14
Publication Date
2026-06-05

AI Technical Summary

Technical Problem

The existing hydraulic protection mechanism cannot effectively protect against landslides on both sides of the tunnel; it can only protect against falling rocks and collapses above the tunnel.

Method used

A hydraulic protection mechanism for coal mine roadways was designed, including a support column, a roof plate, a guard plate, a hydraulic rod, and a lateral protection component. The transmission column is driven by a motor to rotate, thereby realizing the extension and retraction of the scissor frame and the raising and lowering of the lifting plate. Combined with the meshing of the extension rod and the toothed plate, it forms stable support and protection for both sides of the roadway.

Benefits of technology

It effectively protects both sides of the tunnel, prevents landslides, enhances the stability and safety of the tunnel, and adapts to the protection needs of tunnel tops at different heights.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application provides a kind of hydraulic protection mechanism for coal mining roadway, belongs to the technical field of underground coal mine hydraulic support, including support column, roof, guard plate and hydraulic rod;The roof is fixed at the top end of the support column, and is rotatably connected with the guard plate through the pivot I on both sides;The two ends of the hydraulic rod are respectively hinged with the support column and the guard plate;The lower portion of the guard plate is provided with a lateral protection assembly;The lateral protection assembly includes a fixed seat, a slide rail I, a transmission column, a motor I, a sliding block, a scissor frame, a cylindrical slider, a slide rail II and a lifting plate.The present application can improve the technical problem that the existing hydraulic protection mechanism cannot effectively protect the landslide on both sides of the roadway.
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Citation Information

Patent Citations

  • Protective device for coal mine fully-mechanized mining hydraulic support

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  • High-stability extension type driving support device for coal mining

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  • Roadway supporting equipment for underground operation of coal mine

    CN118442093A

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    CN215596942U

  • Carrier feeding groove structure with anti-abrasion stainless steel bars

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