在分析的基础上，提出了设计振动冲击夯时应遵循的原则和优化方法。
The design principles and optimal method for vibration-impact rammer were proposed on the base of the analysis.
文中介绍了HCD110型振动冲击夯结构，对其关键件——工作弹簧的设计进行了研究。
This thesis introduces the impact ram structure for HCD110 type and its optimizing design for working springs.
产品以弯曲机、切断机、抹光机、冲击夯、升降机、搅拌机、配料机、振动夯等建筑机械产品！
Products to the bending machine, cutting machine, trowel machine, impact rammer, elevators, mixers, ingredients, vibrating compaction and other construction machinery products!
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