Dual-redundancy anti-jamming all-motor electric actuator with lock

The dual-redundancy anti-jamming all-motor electric actuator with the lock, provided by the invention, has the fault-tolerant capability of higher dual-redundancy safety and reliability. According to the technical scheme, a main motor drives a main lead screw barrel sleeved with a spline transmission shaft to rotate and drives a piston rod barrel and an anti-blocking self-locking assembly packaged by a piston head of the piston rod barrel to stretch out in a cylinder barrel transmission cavity, and an auxiliary motor drives the sleeved spline transmission shaft with the free end provided with a circular truncated cone column key; the auxiliary lead screw cylinder is matched with the auxiliary lead screw cylinder to rotate in a circumferential guide key mode and points to the outlet end of the piston rod cylinder along with the sleeved spline transmission shaft; the lead screw cylinder is axially limited at the bottom end of the main lead screw nut through a bidirectional thrust angular contact ball bearing en