Fixing and releasing device of space manipulator

The invention relates to the technical field of aerospace, and in particular to a fixing and releasing device of a space manipulator. The fixing and releasing device comprises an accepting cone, an upper shell, a lower shell, an actuating assembly, a guiding assembly, a limiting assembly, a compression spring assembly and a firer gird assembly. The fixing and releasing device disclosed by the invention has the functions of electric fixing, electric releasing, firer standby releasing, fixing state manual recovering and the like; the electric fixing and the electric releasing are mainly completed by matching telescopic motion of the actuating assembly with motion of the guiding assembly, the compression spring assembly, the limiting assembly and a latch hook; the firer standby releasing is mainly completed by the firer gird assembly, the guiding assembly and a rocking block; the fixing state manual recovering is completed through motion of the compression assembly, the limiting assembly and the guiding assembly. The fixing and releasing device disclosed by the invention has the advantages of repeatability, backup multiplicity, light and simple structural shape and simpleness and reliability in motion.