Novel single push rod electric hydraulic thruster

The utility model discloses a new electric power hydraulic driver unit with single push rod, which is used as a driving device of arrester. An electric motor is arranged below a hydraulic cylinder; a long shaft ends of the electric motor with a through slot is provided externally with a drive retainer with a sliding key; the drive retainer can move up and down along the through slot on the long shaft ends of the electric motor through the sliding key and drive the torque; upper end of the drive retainer is connected with a bearing in a bearing chamber at upper part of a piston; an impeller is connected with the drive retainer through a flat key; two sides of the piston are provided respectively with ascending and descending stepless speed regulating valves; top of the hydraulic cylinder is provided with a high temperature oil expansion chamber consisting of an offsetting spring, an annular piston and a supporting plate. The driver unit has artful and simple structure, good performance and full functions, thus ensuring the safe brake of the main engine in a stead and reliable manner.