阅读说明：本技术 具有过压补偿的液压致动器 (Hydraulic actuator with overpressure compensation ) 是由 S·阿尔法亚德 M·卡多法基 M·斯莱曼 于 2020-02-25 设计创作，主要内容包括：本发明涉及液压致动器,其包括：可变输送正排量泵(12)；构件(20),该构件允许泵(12)的输送量被连续改变,构件(20)由液压缸(40)致动,液压缸由根据控制致动器(10)运动的命令工作的第一方向控制阀(48)反馈。根据发明,致动器(10)包括根据泵(12)的输出压力(P)被控制的第二方向控制阀(60),第二方向控制阀(60)包括两个位置,其中一者(60a)被称为静止位置,只要泵(12)的输出压力(P)低于预定压力就获得该静止位置,在该静止位置,来自第一方向控制阀(48)的输出被直接传递到双动式液压缸(40),且另一者(60b)被称为工作位置,在该工作位置,泵(12)的输出压力(P)被传递到液压缸(40)而不经过第一方向控制阀(48),以减小泵(12)的输出压力(P)。(The invention relates to a hydraulic actuator comprising: a variable delivery positive displacement pump (12); a member (20) allowing the delivery volume of the pump (12) to be continuously varied, the member (20) being actuated by a hydraulic cylinder (40) fed back by a first directional control valve (48) operating according to a command controlling the movement of the actuator (10). According to the invention, the actuator (10) comprises a second directional control valve (60) controlled according to the output pressure (P) of the pump (12), the second directional control valve (60) comprising two positions, one (60a) of which is called the rest position, which is obtained as long as the output pressure (P) of the pump (12) is below a predetermined pressure, in which rest position the output from the first directional control valve (48) is transmitted directly to the double-acting hydraulic cylinder (40), and the other (60b) is called the working position, in which the output pressure (P) of the pump (12) is transmitted to the hydraulic cylinder (40) without passing through the first directional control valve (48) to reduce the output pressure (P) of the pump (12).)