剪叉式高空作业平台行走液压系统仿真与试验研究

Simulation and Experimental Research on Traveling Hydraulic System of Scissor-Type Aerial Work Platform

针对剪叉式高空作业平台快速行走启动时压力冲击大、非工作状态溢流损耗大、转弯行走时异响明显等问题,通过增设蓄能缓冲装置、设置旁路卸荷回路、合理设置补油回路,对液压系统进行了优化设计;针对能量损失、优先阀特性、转弯特性等进行理论分析;利用AMESim软件进行仿真分析,最后完成了实车测试。仿真及试验结果表明:优化后,快速行走启动时压力冲击降低约1.5 MPa,非行走状态能耗进一步降低,快速转弯行走时外侧马达补油效果明显,异响问题得到有效解决。该优化设计在一定程度上提高了剪叉式高空作业平台行走液压系统的平稳性和节能性,为进一步优化设计和应用推广提供了理论基础和实践经验。

Aiming at scissor-type aerial work platform′s problems such as large pressure impact when fast walking startup,large overflow loss in non-working state,and obvious abnormal noise when turning and walking,the hydraulic system was optimized by adding energy storage buffer device,setting bypass unloading circuit,and reasonably setting oil make-up circuit.Theoretical analysis was conducted on energy loss,priority valve characteristics,turning characteristics,etc.AMESim software was used for simulation analysis,and finally the real vehicle test was completed.The simulation and test results show that after optimization,the pressure impact at the start of fast walking is reduced by about 1.5 MPa,and the energy consumption in non walking state is also reduced,the oil filling effect of the outside motor is obvious during fast turning and walking,and the abnormal sound problem is effectively solved.The optimized design improves the stability and energy-saving of the walking hydraulic system of the scissor-type aerial work platform to a certain extent,and provides theoretical basis and practical experience for further optimization design and application promotion.