Species of small size, capture domain, a strong locking force in space orbit is repeated locking means

The present invention relates to a kind of small size, capture domain, a strong locking force in space orbit is repeated locking means belonging to the body of the aerospace and electromechanical technical field. The apparatus comprises a drive assembly, a locking mechanism and reduction mechanism, wherein the speed reduction mechanism by engaging with the worm wheel steel steel worm mutually changing the rotational direction of the output power drive assembly, and the deceleration achieved by force output; double four-bar linkage locking mechanism tandem configuration. In the locking process, the left driven four-bar linkage locking points along the D-shaped trajectory, realize a large capture range and direction of movement locking force actuator; the right link mechanism for achieving the torque amplifying to reducing the torque required to the motor input; when the device reaches the locking position, the right angle mechanical advantage in the design of the four-bar linkage, having a magnification appropriate torque; when the locking means, the locking means may be repeated by the right four self-locking dead center link, and a self-locking worm brake locking function remains powered-down.