Space-constrained hybrid linear actuator

An electric motor-driven, rolling element screw linear actuator is presented which work in cooperation with an hydraulic actuator and share several components. This is achieved through the integration of a screw-driven integrated nut piston assembly. Combining the use of an electric screw driven actuator can also reduce the need for a redundant hydraulic system, resulting in the elimination of 50% of connections, valves, piping, pumps, filters etc., while still being 100% redundant. An additional advantage is that the two drive systems are technologically independent, and therefore will not both fail because of an identical component flaw or failure point. The systems may also be used at the same time if conditions require force in excess of that generated by the hydraulic actuator alone. 提出了一种电动马达驱动的滚动元件螺杆线性促动器，其与液压促动器协作地工作并共享若干部件。这通过集成螺杆驱动的集成螺母活塞组件来实现。组合电动螺杆驱动促动器的使用也可以降低对冗余液压系统的需求，从而导致消除了50％的连接器、阀、管道、过滤器等，但仍是100％冗余的。附加的优点在于，两个驱动系统在技术上是独立的，因此不会由于相同的部件缺陷或故障点而均故障。如果状况需要的力超过液压促动器单独产生的力，则也可以同时使用这些系统。