游梁抽油机四腿支架的合理结构

Rational structure of the four-leg post on pumping units

用优化技术和结构分析有限元方法对抽油机3种四腿支架进行了实例计算,并与现用支架作了对比。结果表明,在设计4.7～6.1m高的抽油机四腿支架时,侧面只用斜杆,斜杆从底到顶首尾相接,每根腿杆上的节点数以7个为宜,节点距底面高度为等差级数分布,其承载能力满足要求,可节约型钢40％～46％。

Three kinds of four-leg posts for beam pumping units are studied and optimized by means of finite element method. The result of calculation shows that the steel consumption of a four-leg post of 4.7-6.1 meters high can be reduced by 40-46 percent by reforming the structures of the two flanks, while on the flanks only a number of braces from bottom to top zigzag arranged with seven properly spaced joints on each leg, the post is still provided with the required load capacity.