摘要
根据曲柄群机构中连杆桁架的质心分布特点,利用广义质量替代法将连杆桁架质量向曲柄与连杆桁架的3个铰接点替代,从而将曲柄群机构分解为若干个I类和II类曲柄单元,把曲柄群机构的动平衡问题转化为I类曲柄单元的动平衡问题.计算表明.当I类曲柄单元实现动平衡时,曲柄群机构也实现了动平衡.结论对简化曲柄群机构的结构,减少该机构的基础振动具有较好的指导意义.
According to the distribution characteristics of center of mass of the crank group mechanism,the mechanism is broken into some crank units named class I crank unit or class II crank unit,by generalized mass substitution in which the mass of the connecting rod truss is substituted on the 3 hinged points,and the dynamic balancing of the crank group mecha-nism is converted to the dynamic balance of class I crank unit.The calculation example shows that the crank group mechanism is a dynamic balancing mechanism when each class I crank unit is a dynamic balancing rotor.The conclusions may be helpful for reducing the foundation vibration of the mechanism and simplifying the structure in the design of the crank group mechanism.
出处
《陕西科技大学学报（自然科学版）》
2016年第3期142-145,共4页
Journal of Shaanxi University of Science & Technology
基金
国家自然科学基金项目(51175313)
关键词
曲柄群机构
广义质量替代
曲柄单元
动平衡
crank group mechanism
generalized mass substitution
crank unit
dynamic bal-ancing
