1. The core of the intelligent fully mechanized mining face is the hydraulic system of the working face, which is the heart of coal mining and the lifeblood of the entire working face.

Its components include: power source; Implementing Agencies; Terminal signal feedback and processing system.

2. The development of the hydraulic system of fully mechanized mining face of Huahai Company has gone through five stages:

The 1st Generation: Manual Single Pump;

The second generation: double pump linkage, single pump flow rate increases;

The third generation: multi-pump linkage and the introduction of control and protection mechanism, the flow rate of a single pump is increased again;

The fourth generation: the introduction of variable frequency drive technology, systematic monitoring and protection functions, the initial formation of a liquid supply system, the single pump flow rate continues to increase;

The fifth generation: 5G intelligent liquid supply system, drive, control, monitoring, protection, fault diagnosis are all intelligent, and the flow rate of a single pump continues to increase;

3. Advantages of Huahai company's hydraulic system:

The liquid supply speed is fast, the liquid cleanliness is high, the working face pressure is up to the standard and the output is stable, and the reliability of the system operation time is continuously improved;

In order to facilitate the later operation and maintenance management, Huahai's hydraulic system is designed to be composed of 12 subsystems, including 9 subsystems developed by our company and obtained intellectual property rights.