抽油泵游动凡尔罩的受力是比较复杂的 ,其中因抽油杆在上下运动中会产生一个横向载荷 ,这载荷以波的形式向泵上传播 ,最终导致固定凡尔罩受应力过大而疲劳断裂 ,文章就此进行了分析 ,提出了在拉杆上加装尼龙扶正器、应力加长活塞、凡尔罩采用耐腐蚀材料的解决方法 Suction Pump Traveling The force of the bell housing is rather complicated, where a lateral load is generated by the sucker rod during up and down movement, and this load propagates in the form of waves to the pump, eventually resulting in a stress Large and fatigue fracture, the article on this analysis, put forward the rod on the installation of nylon centralizer, stress prolong the piston, the use of corrosion-resistant material Seouler cover solution