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装载机驾驶室上的翻车保护结构(ROPS)是针对车辆倾翻时发生连续翻滚而设计的安全保护装置,ROPS的可靠性对司机的生命安全有着不可忽视的作用。建立某型装载机驾驶室ROPS虚拟样机,根据非线性有限元接触理论,对ROPS进行最小侧向承载能力、侧向最小能量吸收能力和最小纵向承载能力有限元分析,分析结果满足国际标准对ROPS性能的要求。在试验室对该型ROPS实体进行试验测试,试验结果和仿真结果基本吻合,验证了理论研究的正确性。相关研究可为装载机ROPS的优化设计提供有效依据,对于提高装载机作业时的安全性具有重要意义。
The rollover protection structure (ROPS) on the loader cab is a safety protection device designed for continuous rollover when the vehicle is tilted. The reliability of the ROPS has a significant impact on the life safety of the driver. Based on the nonlinear finite element contact theory, finite element analysis of minimum lateral load capacity, minimum lateral energy absorption capacity and minimum longitudinal load capacity of ROPS is established. The results meet the requirements of international standards for ROPS Performance requirements. The ROPS entity is tested in the laboratory, and the experimental results are in good agreement with the simulation results, which proves the correctness of the theoretical research. The related research can provide an effective basis for the optimization design of loader ROPS, which is of great significance for improving the safety of loader operation.