摘要
根据新型库内桅柱式升降车的设计实践工作,结合该车所用升降机构的结构特点,建立了变截面4节臂倒立桅柱式升降机构的力学模型,对升降机构刚度和强度的设计计算方法进行了分析研究,对影响刚度和强度的设计参数计算公式进行了分析及推导,并结合计算实例以及相关部门的试验检测,证明了变截面4节臂倒立桅柱式升降机构模型的准确性,以及升降机构刚度、强度设计计算方法的合理性,可作为变截面升降机构强度和刚度设计计算的参考依据。
Based on designing of a new in-garage mobile mast elevating plattorm and by taking into consideration the elevating mechanism envisioned for use on the platform, a mechanical model is established for an inverted-mast elevating mechanism featuring a telescopic arm with four variable-cross section sections. Then, an analysis is conducted of the design calculation methods used to determine the mechanism＇s rigidity and strength; calculation formulas are analyzed and deduced for design parameters that may affect the rigidity and strength; and the accuracy of the aforementioned model, along with the validity and rationality of those design calculation methods selected for the elevating meehanism＇s rigidity and strength, is proved through design calculation examples set for the mobile elevating platfrom as well as tests and detections carried out by relevant test agencies. Finally, a conclusion is reached that the design calculation methods discussed herein can be used for reference in design calculation for variable-cross section elevating mechanisms.
出处
《起重运输机械》
2010年第4期18-23,共6页
Hoisting and Conveying Machinery
关键词
变截面4节臂
桅柱式升降机构
强度
刚度
variable-cross section four-section telescopic mast
mast elevating mechanism
strength
rigidity
