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在深入研究了全地面起重机超起装置工作原理的基础上,将悬链线理论应用到了超起装置的设计中,建立了超起拉索的线形方程。基于此方程,在ANSYS中用抗弯刚度极弱的梁单元模拟了超起拉索,并建立带超起装置的臂架系统有限元模型,对整个超起臂架系统进行了几何非线性有限元计算。以吊臂整体应力和销孔局部应力为考查点,通过算例定量分析了超起拉索线形对主臂和超起拉索受力影响规律。
On the basis of deeply studying the working principle of all-terrain crane super-lifting device, the catenary theory was applied to the design of super-lifting device, and the linear equation of super-risers was established. Based on this equation, the superstructure cable is simulated in ANSYS with beam elements with very weak bending stiffness, and the finite element model of the boom system with overrun device is established. The finite element model Meta-calculation. Taking the overall stress of the boom and the local stress of the pin hole as test points, a numerical example is given to quantitatively analyze the influence of the super-rise cable linearity on the force of the main boom and the super-rise cable.