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挖掘机有推压、提升、回转、行走等四个主要传动机构。每个挖掘循环是由推压、提升、回转联合动作完成。在挖掘过程中,外载荷通过铲斗、斗杆及推压机构传递到推压电机上。所以推压机构在挖掘过程中起着重要的作用。挖掘机在工作过程中启动频繁,外载荷变化不定,而且冲击载荷也时时发生。尤其是推压机构转动部分所引起的冲击载荷对工作装置的影响较为明显。因此在设计推压机构时不得不考虑保护环节,以便减小动载荷的影响,提高
Excavators have push, upgrade, rotation, walking and other four major transmission. Each excavation cycle is completed by pushing, lifting, turning the joint action. During digging, the external load is transmitted to the push motor through the bucket, stick and pushing mechanism. Therefore, the pressing mechanism plays an important role in the excavation process. Excavators in the work process to start frequently, the external load changes, and the impact load also occurs from time to time. In particular, the pushing mechanism caused by the impact of the impact load on the working device is more obvious. Therefore, in the design of the pressing mechanism have to consider the protection of links in order to reduce the impact of dynamic load and improve