【摘要】 为了实现桥式起重机小车的准确定位和尽快消除吊重摇摆,研究吊重摇摆的规律和影响因素.根据小车吊重系统三维动力学方程建立了吊重二自由度摆角的数学模型.动态仿真结果表明:小车运行加(减)速度对摆角的影响比绳长显著,加(减)速度增大1倍时,摆角和摆速分别约增大0.12 rad和0.164 rad/s;绳长增加2 m时,摆角和摆速无明显变化,吊重自由摆动周期约增加1.3 s.更多还原

【Abstract】 To precisely position the load and promptly stop load swing for overhead and gantry cranes,the swing of load and the influencing factors were investigated.A 2-degree of freedom model of load swing angel was derived based on 3-dimensional dynamic equations of the trolley-load system.Dynamic simulation results show that the trolley acceleration has greater effect on the swing angel of load than the rope length,with the swing angle and the angular velocity of swing increasing 0.12 rad and(0.164 rad/s,)respectively,with an increase of 1 times in the acceleration of the trolley;and there is no obvious change in the swing angle and the angular velocity of swing,but the cycle of swing increases 1.3 s,with an increase of 2 m in the rope length.更多还原