伸缩臂履带起重机回转时臂架应力状态分析

摘要

When the telescopic boom crawler crane is in slewing process,due to swaying of the lifting objects,the centrifugal force caused by slewing and inertia force generated at start and stop will generate additional impact load,hence to affect the stress state of the boom.The rigid-flexible coupling dynamical model for the whole machine is built for dynamic simulation of the telescopic boom crawler crane in slewing process in RecurDyn,in order to get the effect of slewing accel-eration and mass on the stress state,providing a basis for the crane design.%伸缩臂履带起重机在回转过程中，由于吊重的摆动，回转产生的离心力以及起停时产生的惯性力，会产生附加的冲击载荷，从而影响臂架的应力状态。通过建立刚柔耦合的整机动力学模型，在RecurDyn里面对伸缩臂履带起重机的回转过程进行动力学仿真，得到回转加速度和质量对臂架应力状态的影响，为起重机设计提供依据。