A new power saving pumping unit with fan-shaped crown sheave and flexible connecting rod is developed based on the conventional beam pumping unit.

• 在常规游梁式抽油机的基础上,设计了一种新型柔性连杆变矩节能扇形抽油机,其特点是结构简单紧凑,天车轮可以实现大摆角,易实现长冲程,节能效果显著。