Non-coal underground mine pry bar

By designing a pry bar assembly and safety protection components for non-coal underground mines, the problem of dangerous rocks injuring operators' hands when prying out dangerous rocks from the top of roadways has been solved, achieving safer prying operations.

CN224363950UActive Publication Date: 2026-06-16GUIZHOU UNIV +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
GUIZHOU UNIV
Filing Date
2025-06-16
Publication Date
2026-06-16

AI Technical Summary

Technical Problem

When using existing crowbars to pry out dangerous rocks from the top of the tunnel, falling rocks may injure the operator's hands, and the operator has difficulty maintaining a safe distance due to the limited space in the tunnel.

Method used

Design a pry bar for non-coal underground mines, including a pry bar assembly and a safety protection assembly. The pry bar assembly consists of a bar body and a pry head, with the width of the pry head gradually decreasing. The safety protection assembly consists of a safety protection module and a positioning module connected together. The positioning module is connected to the outer peripheral surface of the bar body, and the safety protection module is positioned close to the pry head to block falling rocks.

Benefits of technology

It effectively prevents falling rocks from injuring operators' hands, and at the same time increases the horizontal distance between operators and rocks when prying them off, thus improving operational safety.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the field of non - coal underground mine dangerous rock prying, more specifically, relate to a kind of non - coal underground mine prying hair pole. Including prying lever assembly, the prying lever assembly includes stem and prying head, the stem is along its length direction one end with the prying head along its length direction one end fixed connection;The prying head gradually decreases along its length direction away from the stem one end width;Safety protection component, the safety protection component includes safety protection module and positioning module;The positioning module is connected with the part outer periphery of the stem;The safety protection module is connected with the part outer periphery of the positioning module;Wherein, the safety protection module is close to the prying head setting.This has solved the problem that existing prying lever is easy to fall along stem when prying dangerous rock in roadway top, possibly to the operator hand cause injury.
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