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传统的卸载荷操作是将光杆上的卸载荷卡子下移至光杆的有效冲程内,启动抽油机在光杆卸载卡子运行至井口上方时停机,利用平衡块的惯性,卸载荷卡子与井口撞击后,悬绳器与光杆载荷卡子分离,迅速刹紧刹车,从而达到抽油机卸载荷的目的。但存在多项缺点,表现为卸载荷卡子与井口撞击时对井口形成巨大的冲击、将卸载荷卡子下移至光杆有效冲程内,抽油机毛辫子左右受力不均匀,此外,卡子牙对光杆形成一定的点状损伤,工人技师们通过技术攻关,成功研制新型卸载荷工具,将抽油机载荷的刚性卸载改为柔性卸载,有效地减少了油井刚性卸载造成的弊端,实现了增产增效的目的。
The traditional unloading operation is to move the unloaded load clip on the polished rod down to the effective stroke of the polished rod. The pumping unit is started to stop when the polished rod unloads the clamp to run above the wellhead. By using the inertia of the balance block, , The suspension rope and light lever load clip separation, braking brake quickly, so as to achieve the purpose of the pumping unit unloading load. However, there are a number of shortcomings, such as the unloading of khaki and wellhead impact on the wellhead to form a huge impact, the unloaded load khaki down to the polished rod effective stroke, the pumping machine hair braids around the uneven force, in addition, The polished rod forms a certain spot-like damage. The workers’ technicians have successfully developed a new type of unloading tool through technical research, and changed the rigid unloading of the pumping unit load to flexible unloading, effectively reducing the defects caused by the rigid unloading of the oil well, Effective purpose.