02020202 With the continuous development of China's market economy and the continuous improvement of comprehensive national strength, enterprises and institutions have higher and higher requirements for vehicles. Some special vehicles, such as cranes, mobile blood collection and treatment vehicles, communication transit vehicles, emergency command vehicles, large-tonnage dump tankers, motorhomes, food delivery trucks and mobile elevators for airports, etc., all place requirements on stability, and even require adjustment to a horizontal state. The traditional hand-cranked mechanical leg can no longer meet the needs of the market. The use of hydraulic leg systems with high support, strong operability, high safety and low failure rate in vehicles is an inevitable trend, and it is becoming more and more widely used. When in use, the legs extend down and touch the ground, lift the body up, so that most of the weight of the vehicle is supported by the legs, so that the stability of the vehicle body is maintained, and the load of the vehicle spring steel plate is reduced. After use, the support foot is stored upward, and the height is sufficient from the ground to ensure the allowable departure angle and ensure that the safety of driving and equipment is not affected. 02 Shenzhen Liangshan Electromechanical Equipment Co., Ltd. as one of the earliest domestic enterprises engaged in the production and sale of hydraulic leg systems, is committed to improving the technical level of products, perfecting performance and ease of use and reliability. We hope to contribute to the progress and development of society with our own efforts; developed a series of advanced level at home and abroad, especially suitable for domestic vehicles, methods, roads and working habits products.