Hydraulic supporting device for coal mine

Abstract

The invention discloses a hydraulic supporting device for a coal mine. The hydraulic supporting device comprises a supporting vertical column and a pressurizing device arranged on the supporting vertical column. The supporting vertical column comprises a piston barrel and a piston rod. A water inlet and a water outlet are formed in the side wall of the piston barrel. The pressurizing device comprises a pressurizing device body, a water inflow one-way valve, a water outflow one-way valve and a high-pressure ball valve. The water inflow one-way valve is arranged on a water inlet of the pressuring device body, the water inflow one-way valve is connected with a water inflow connector, the water outflow one-way valve is arranged on a water outlet of the pressurizing device body, the water outlet communicates with the water inlet of the piston barrel, the high-pressure ball valve is arranged on a drainage port of the pressurizing device body, and the drainage port communicates with the wateroutlet of the piston barrel. Water serves as a working medium, a water source in a roadway can be directly adopted, and the hydraulic supporting device is beneficial for working environments. The hydraulic supporting device works by depending on ground pressure, and energy is saved. A motor and other power and control elements do not need to be configured, the structure is simple, and the cost islow. The automatic pressurizing device is adopted, the pressure in the vertical column can be continuously kept stable, and the drilling efficiency of workers is improved.

Description

technical field [0001] The invention provides a support column for coal mines, in particular to a hydraulic support device for coal mines. Background technique [0002] During the coal mine drilling process, columns are often needed for support. At present, most of the support columns on the market use hydraulic oil as the working medium. Once leakage occurs during the working process, the hydraulic oil will flow to the roadway, making the roadway floor wet and slippery, polluting the working environment and causing safety hazards. In addition, during the drilling process, due to vibration and other reasons, the column is prone to loosening and cannot provide support, and the operator needs to manually pressurize it. Contents of the invention [0003] The purpose of the present invention is to provide a hydraulic support device for coal mines with a novel and reliable structure, simple and convenient operation, and automatic pressurization and pressure maintenance for the...

AI Technical Summary

Problems solved by technology

At present, most of the support columns on the market use hydraulic oil as the working medium. Once leakage occurs during the working process, the hydraulic oil will flow to the roadway, making the roadway floor wet and slippery, polluting the working environment and causing safety hazards.

In addition, during the drilling process, due to vibration and other reasons, the column is prone to loosening and cannot provide support, and the operator needs to manually pressurize it

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