A roof fracturing device for coal mining
CN224282628UActive Publication Date: 2026-05-26山东省煤矿和能源安全技术服务保障中心
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Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 山东省煤矿和能源安全技术服务保障中心
- Filing Date
- 2025-06-09
- Publication Date
- 2026-05-26
AI Technical Summary
Technical Problem
Existing roof cracking devices are unstable when installed inside boreholes, resulting in a cumbersome, inefficient, and costly installation process.
Method used
The design employs an installation cylinder and elastic support components. The elastic force of the support components is used to fix the installation cylinder inside the borehole, and the position and fixation of the fracture-inducing body are adjusted and fixed by the support rod and fixing components, simplifying the installation process.
Benefits of technology
This enabled rapid and stable installation of the fracturing material within the borehole, improving installation efficiency and reducing construction costs.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN224282628U_ABST
Abstract
This utility model relates to the field of fracturing device installation technology, specifically a roof fracturing device for coal mining, which solves the problems of low efficiency and high cost of traditional installation methods. It includes an installation cylinder inserted into a borehole, with an elastic support member on the outer wall of the cylinder. The elastic support member expands outwards by its own elasticity to fix the installation cylinder in the borehole. A sleeve is disposed on the installation cylinder. A support rod is installed inside the sleeve, penetrating the sleeve, and can move along its axis within the sleeve to adjust the support height. A support plate is disposed at the top of the support rod for placing the fracturing material. A fixing assembly is disposed on the sleeve for fixing the support rod. The elastic support member is curved, with its middle portion bulging outwards. One end of the elastic support member is fixedly connected to the installation cylinder, and the other end is a free end. An installation groove for installing the elastic support member is provided on the cylinder wall of the installation cylinder.
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