摘要
叉车转向桥桥体是叉车实现转向功能的关键零部件,其结构的设计是否满足要求将直接影响叉车的使用安全。为此,基于虚拟样机技术,利用ADAMS对叉车转向桥进行多体动力学仿真分析,获得转向桥桥体所受载荷随时间变化规律。利用Ansys Workbench对叉车转向桥桥体进行静力学分析和谐响应分析,根据静力学分析结果进行安全强度校核。根据谐响应分析的变形频率响应曲线找出桥体谐响应振幅最大时的频率,计算出最大频率下的应力和应变云图。结果表明,其强度满足国家安全评估标准,桥体引起共振的频率为700Hz,远远大于路面引起的共振频率,所设计桥体满足设计标准要求。
Steering axle body of forklift truck is the key component to realize steering of forklift truck. Whether its structural design meets the requirements will directly affect the safety of forklift truck. Therefore, based on the virtual prototype technology, ADAMS is used to carry out multi-body dynamics simulation analysis on the forklift steering bridge, and the variation rule of load on the steering axle with time is obtained. Ansys Workbench is used to carry out static analysis and harmonious response analysis on forklift steering bridge body, and safety strength check is carried out according to static analysis results. According to the deformation frequency response curve of harmonic response analysis, the frequency when the harmonic response amplitude of the axle is maximum is found, and the stress and strain diagram at the maximum frequency is calculated. The results show that its strength meets the national safety assessment standard. The resonance frequency caused by the axle body is 700 Hz, which is far greater than the resonance frequency caused by the road surface. The designed axle body meets the requirements of the design standard.
作者
于河山
叶俊
张增密
吴波
Yu Heshan;Ye Jun;Zhang Zengmi;Wu Bo
出处
《起重运输机械》
2019年第7期82-86,共5页
Hoisting and Conveying Machinery
关键词
转向桥桥体
虚拟样机
多体动力学
有限元分析
谐响应分析
steering axle body
virtual prototype
multibody dynamics
finite element analysis
harmonic response analysis
