Sliding block self-locking assembly of servo hydraulic machine

The utility model relates to the field of sliding blocks of servo hydraulic machines, in particular to a sliding block self-locking assembly of a servo hydraulic machine, which comprises a servo hydraulic machine body, and a sliding block body is arranged in the servo hydraulic machine body in a sliding mode. The locking mechanisms used for locking the sliding block body are installed on the two sides of the servo hydraulic machine body. By arranging the locking mechanism, when the sliding block body is locked, a servo motor drives a driving bevel gear to rotate, a transmission lead screw is driven to rotate through meshing connection of the driving bevel gear and a driven bevel gear, and then a limiting toothed plate is driven to transversely move and be meshed with limiting teeth through threaded connection of the transmission lead screw and a connecting base; and the purposes of automatically locking the sliding block body and preventing the sliding block body from sliding and falling are achieved, and mea