Coal mine gas extraction device

By designing a hollow extension rod and drill rod structure, combined with a locking assembly and a motor-driven lifting and rotating assembly, the wear and depth limitations of existing devices were solved, achieving efficient and convenient operation of gas extraction.

CN224282708UActive Publication Date: 2026-05-26GUIZHOU TIANJIAN ENERGY MANAGEMENT CO LTD
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Patent Information

Application Number
CN202520631083.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-03
Publication Date
2026-05-26
Estimated Expiration
2035-04-03

AI Technical Summary

Technical Problem

Existing coal mine gas extraction devices are prone to wear due to friction with the borehole wall during drilling, and lack convenient drill rod extension functions, affecting service life and extraction depth.

Method used

A device comprising a mounting frame, mounting plate, drill rod, extension rod, lifting assembly, and rotating assembly is designed. Through the hollow extension rod and drill rod structure, and by setting first and second locking assemblies, the drill rod length can be flexibly adjusted and quickly assembled and disassembled, preventing friction and increasing the extraction depth.

Benefits of technology

It extends the service life of the extraction pipe, improves the flexibility of drill pipe length and extraction efficiency, enhances the applicability and convenience of the device, reduces space occupation, and is easy to carry.

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Abstract

The utility model provides a coal mine gas extraction device, and relates to the technical field of gas extraction, the coal mine gas extraction device comprises a mounting frame, a mounting plate, a drill rod, an extension rod, a lifting assembly and a rotating assembly, the lifting assembly is arranged on the mounting frame, and the lifting assembly is used for driving the mounting plate to move up and down; the extension rod is rotationally arranged on the mounting plate through a bearing, the rotating assembly is arranged on the mounting plate and used for driving the extension rod to rotate, the drill rod is slidably arranged on the extension rod in a sleeving mode, and a first locking assembly is arranged between the top of the extension rod and the drill rod. A second locking assembly is arranged between the bottom of the extension rod and the drill rod, the interior of the drill rod and the interior of the extension rod are both hollow, and a through hole is formed in the bottom of the drill rod; the hollow extension rod and the hollow drill rod are arranged, and the extraction pipe is inserted into the extension rod and the drill rod, so that friction between the extraction pipe and the hole wall of the drill hole is prevented.
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