大吨位铁路起重机新型转台结构研究及有限元分析

The new study and finite element analysis of the structure of large-tonnage railway crane rotating platform

随着中国进入高速铁路时代,铁路的提速对铁路起重机的各项性能有了更高的要求。正是在这样的大背景下,为了满足高铁时代的要求,有必要对铁路起重机的关键结构之—的转台,进行全新结构的设计。通过用箱型结构来代替传统的高墙板结构,将原配重的四边形伸缩臂改为六边形,并采用搭接的方式实现伸缩配重基本臂的作用,以便能更充分的利用材料,提高铁路起重机转台的性能,并达到减轻自重的目的。利用有限元方法,采用板壳单元和实体单元建立有限元模型,运用有限元分析软件ANSYS对新设计的转台结构进行应力、应变计算,得到应力、应变分布情况,从而验证了新型转台结构的可靠性。

With China＇s entry into the era of high-speed railway, the speediness has placed higher demand on the performance of railway cranes. Against this background, it is necessary to redesign the key railway crane structure - the rotating platform, in order to satisfy the requirements of the times on high-speed rail. By means of replacing the traditional wall plate with box column, transforming the original quadrilateral telescopic boom into hexagon one, and via lapping to realize the function of basic boom, the present design intend to take full advantage of materials, improve the performance of rotating platform, and reach the purpose to reduce weight. The reliability of the new mode of rotating platform is verifies by finite element method, using shell element and solid element to establish finite element model, and using ANSYS to calculate the amount and distribution of the stress and strain.