DN single hydraulic prop is widely used in mining and other aspects, it improves the safety performance of mining equipment, and it has a large working stroke and low safety management cost. High safety and reliability. Long service life and easy operation and maintenance.
DN single hydraulic prop is a kind of constant resistance supporting equipment commonly used in coal mining face of coal mine in China. It is widely used in metal mechanized coal mining face or comprehensive mechanized coal mining face in combination with metal roof beam Ends or heading heads are used for temporary support, which has a good effect on improving safety operations and work efficiency.
The DN single hydraulic prop is characterized by its own pump and oil. When it is supported, it can be quickly raised by the hand crank to shake the column. When the column is lowered, the working fluid is not discharged. It can better protect the working environment, and it is convenient to use and flexible to manage. The equipment is simple.
Working principle of DN internal injection single hydraulic prop
The working fluid of the DN internal injection type single hydraulic prop is No. 5 hydraulic oil. When returning to the column, the hydraulic oil in the oil cylinder flows back to the inner cavity of the living column to form a closed cycle; no pump station and pipeline system are required, less supporting equipment, and low cost; It is used in places where there is no power supply and pumping station. It has great flexibility, convenient and simple management. Because the working fluid is a closed cycle, the hydraulic oil flows back to the inner cavity of the active column when the pillar returns to the column, and the closed circuit of the hydraulic oil of the pillar itself is realized. The hydraulic oil consumption is very low; the hydraulic system of the prop is a closed system, the hydraulic oil does not overflow, does not pollute the environment, is conducive to environmental protection, and has little impact on the production of the working surface, the working surface environment is better maintained, and the working conditions are better; The valves are all installed in the inner cavity of the pillar, the possibility of being polluted by the outside world is small, and the reliability is high.
