A calculation method of crane deflection considering the boom gap

The traditional analytical method has low precision and narrow application range. The calculation process of the finite element method is complex. And the deflection calculation methods, which are widely used in current, do not take the vertical offset produced by the boom gap into account. This paper puts forward a calculation method of crane deflection considering boom gap. Firstly, the decomposition of the crane load is carried out along the radial and tangential direction of the boom, and the deflection produced by each component force is respectively calculated with Moore integral. Then the influence of the boom gap on the crane deflection is analyzed. And the deflection correction method when considering boom gap is put forward. Finally the total deflection of the boom and the hook location considering boom deflection can be obtained. This calculation method can improve the precision of the deflection calculation. And it can be applied to the lifting simulation platform. The experimental results indicate that the accuracy of deflection calculation is improved by this method.