Research On The Optimization Of The Combustion Forklift Hydraulic System

Forklift as the most important tool in the warehousing and logistics industry, has been more widely used. With the social development, people get much higher requirements on its comfort, safety and energy saving. Forklift hydraulic system as a key factor to improve the quality of forklift has aroused great attention. The article studies the CLG2030H forklift hydraulic system, and proposes optimization programs. Then the article carries on the simulation analysis and experimental verification.First, the article presents the working principle of the forklift hydraulic system and the pipe rupture valve, and analyze the problem of the designing process of the pipe rupture valve, the pressure loss and the hydraulic impact. Then the article puts forwards to the improvement programs for the problem in the hydraulic system.Second, the article establishes the mathematical mode and AMESim simulation model about the pipe rupture valve and the forklift hydraulic system, and verify the correctness of the model. By the simulation, gets the relationship between the pipe rupture valve’s structure parameters with the pipe rupture’s operating characteristics and the hydraulic system’s operating characteristics, then optimizes the pipe rupture valve’s parameters. Secondly to verify the improved hydraulic system can reduce the pressure loss, the oscillation of the falling velocity, the output torque of the engine, the hydraulic impact.Finally, with the experiment, the article verifies the previous simulation is correct, and in terms of the pressure loss, hydraulic shock, engine output torque, it verifies that the improved forklift hydraulic system is much better than the original hydraulic system.With the simulation and experiment it can be concluded that:the optimization of the pipe rupture’s structure and the hydraulic system can improve the forklifts’performance of the safety, energy efficiency and comfort.