上翻式驴头大多用于驴头悬点负载较小的游梁式抽油机上。1980年以来,一些制造厂家参照国外一家公司的抽油机设计,把上翻式驴头结构用于悬点负载较大的抽油机上(如CYJ10—3—26B、CYJ10—3—37B等)。由于忽略了在结构设计、材料选择、焊接工艺、安装和使用方法上存在的差异,这类抽油机的驴头在使用中发生了不同程度的损坏,掉驴头的 Flip-up donkeys are mostly used for donkey head hanging load smaller beam pumping unit. Since 1980, some manufacturers refer to the design of a pumping unit of a foreign company, and use the upside-down donkey head structure for a pumping unit with a large hanging point (such as CYJ10-3-26B, CYJ10-3-37B, etc.) . Due to ignoring the structural design, material selection, welding process, installation and use of the differences exist in the use of such a donkey head in varying degrees of damage, out of donkey head