美国Pioneer电气制造公司设计了一种新式的抽油机平衡机构(见图),可使抽油机传动装置输出的功率比较均匀,齿轮和轴承所承受的力很小。 这种铰接式游梁平衡机构有一个可转动的平衡重臂。此平衡重臂接在游梁尾端通过一个连杆机构与游梁拉杆臂连接。连杆可随时随地进行调整,以保持准确平衡。位于平衡重臂下端的平衡重始终低于抽油机支架重心,以保证抽油机在运转期间具有较好的稳定性。这种布 Pioneer Electric Manufacturing Company of the United States designed a new type of pumping unit balancing mechanism (see photo), which can make the pumping unit output power more uniform, the gear and the bearing to withstand the force is small. The articulated beam balancing mechanism has a swingable counterweight boom. The balance boom is connected with the trailing arm by a linkage at the end of the beam. Connecting rod can be adjusted anytime, anywhere in order to maintain accurate balance. The balance weight located at the lower end of the balance boom is always lower than the center of gravity of the pumping unit bracket to ensure better stability of the pumping unit during operation. This cloth