The other is a mechanical automatic reversingmechanism designed for atmospheric pumps, which adopts involute (zero pressure Angle) CAM mechanism as reversingmechanism.
另一种是为气压泵设计的机动自动换向机构，该机构是利用渐开线(零度压力角)凸轮机构作为换向机构。
2
This pumping unit is made up of supporting frame, ratchet reversing gearbox, touch the pump body, make way for agencies, balance weight protection, brake mechanism.
该抽油机的主要组成结构包括机架，棘轮换向减速箱，碰泵机构，让位机构，平衡重保护装置，刹车机构。
3
The target-driven reversing verification method uses the mechanism of reverse reasoning, and reduces the searching space of attacking trace, meaning high efficiency.