The problem of the effect of oblique tension link on the derricks' cross section frame in the front leg stability calculation of open front derricks remains unsolved.
在前开口井架前大腿的稳定计算理论中一直没有很好的解决井架横截面框架中斜拉杆的作用。
Through modification of the framework of a beam pumping unit by removing the cross tension link, a great quantity of steel can be saved and the manufacturing cost can be reduced.
采取去掉横拉筋的办法改造抽油机游梁支架，可节省大量钢材，降低制造成本。对改造后的游梁支架进行了动态应力测试、位移测试和稳定性计算。
Through modification of the framework of a beam pumping unit by removing the cross tension link, a great quantity of steel can be saved and the manufacturing cost can be reduced.
采取去掉横拉筋的办法改造抽油机游梁支架，可节省大量钢材，降低制造成本。对改造后的游梁支架进行了动态应力测试、位移测试和稳定性计算。
应用推荐