Analysis and comparison for thermal balance of steering hydraulic system of loader

作者：Wang Jianpeng; Qin Sicheng^*; Yang Liguang; Shi Yousheng

来源：Journal of Central South University(Science and Technology), 2016, 47(5): 1527-1532.

DOI：10.11817/j.issn.1672-7207.2016.05.011

• Heat transfer model
• Hydraulic system
• Industrial tests
• Lumped parameter method
• Mode of operations
• Simulation
• Steering systems
• Temperature differences

Based on the lumped parameter method to establish simulation model of heat transfer in the loader full hydraulic steering system, high-speed car test conditions were simulated. For several typical mode of operation, the thermal balance simulation of two kinds of steering hydraulic system was done by using heat transfer model. The loss of two hydraulic steering systems was compared. The results show that the results validated the simulation model is accurately credible. At present, the I-shaped shovel loading cycle is widely used in the thermal balance industrial test of loader, which is not the maximum heat load condition of the hydraulic system of loader. The thermal balance temperature and the ambient temperature difference of the coaxial flow amplifying steering hydraulic system loader in the T-shaped operation is 74.3 ℃;the thermal balance temperature and the ambient temperature difference between the flow amplification and steering hydraulic system loader in the V-shaped operation is 62.64 ℃.

• 出版日期2016