摘要
本文将塔式起重机水平动臂的拉杆作为一弹性体支承,利用挠曲线的微分方程分析并推导出动臂在不同连接型式下的纵横弯曲的计算公式。由此提出动臂最佳吊点的确定原则,是在上述支承条件下动臂的平面弯曲强度与纵横弯曲强度相等。
This paper considers the pull rod for the tower crane as an elastic support, and optimizes the pull point on the jib by using the vertical and horizontal bending theory in various connection forms. Only on condition that the plane bending stress of the jib is equal to the vertical and horizontal bending stress can the optimal pull point be determined.
关键词
塔机
水平动臂
吊点
纵横弯曲
optimal pulling pointion level jib of tower crane
differential equation of flexural curve
vertical and horizontal bending
