为保证施工升降机的运行安全,本文对高风险运行工况下施工升降机的刚柔耦合动力学特性进行了分析.首先,建立施工升降机刚柔耦合模型;其次,分析施工升降机的高风险运行位置,并定义传动装置中齿轮与齿条之间的接触力模型;最后,运用ANSYS和ADAMS仿真计算了吊笼的运动状态和附墙架的最大应力节点.结果表明:在高风险位置的上升和下降中,吊笼的加速度和速度均呈正弦波动且快速衰减,分别在0.25 s和0.4 s后趋于稳定;最大应力位于附墙架与导轨架连接的螺栓孔处,分别为49.54和50.20 MPa,均可满足安全强度校核.
In order to ensure the operational safety of construction hoist,this paper analyzes the rigid-flexible coupling dynamic characteristics of the construction hoist under high-risk operation conditions.Firstly,a rigid-flexible coupling model of construction hoist is established;secondly,the high-risk operation position of the construction hoist is analyzed and the contact force model between the gears and the rack in the transmission is defined;finally,the motion state of the cage and the maximum stress node of the wall frame are simulated by ANSYS and ADAMS.The results show that in the rise and fall of the high-risk position,the acceleration and velocity of the cage fluctuate sinusoidal and attenuate rapidly,and tend to be stable after 0.25 s and 0.4 s,respectively;the maximum stress is located at the bolt hole between the attached wall frame and the guideway frame,which is 49.54 and 50.20 MPa respectively,which can meet the safety strength check.