双吊点塔式起重机起重力矩曲线的确定

针对目前双吊点臂塔机起重力矩曲线的理论值与实测值误差较大的现实 ,根据塔式起重机力矩限制器的作用机理 ,指出常用起重机起重力矩特性方程的局限性 ,对双吊点吊臂塔式起重机是不准确的 .笔者通过力学分析提出双吊点吊臂塔式起重机的起重力矩特性的计算方法 ,并由程序实现之 ,从而解决了双吊点塔机的起重力矩曲线绘制的理论 ,并提出了实际应用中对理论曲线调整的方法 ,最后作为实例给出了用程序和常规算法计算 42m双吊点臂QTZ31 5塔机的起重力矩特性表 .

The Method of Determining Tower Crane Lifting Torque Curve With Double-Suspension

For the tower crane with double_suspension jib, there exists a large error between the theoretical torque value obtained from the lifting torque curve and the actual measuring, which stems from the fact that the lifting torque equation commonly used is not suitable for it according to the torque limiters operational mechanism. In response to it, this paper analyses the forces exerted on the tower crane with double_suspension jib and proposes a better method for determining its lifting torque curve, and finally gives two kinds of lifting torque curve for the QTZ315 tower crane with 42_meter jib.