Push-pull type electro-hydraulic linkage actuator

The utility model relates to a push-pull type electro-hydraulic linkage actuator. Comprising a hydraulic cylinder, a piston rod, a first plunger pump and a second plunger pump, a movable cavity is formed in the hydraulic cylinder, one end of the piston rod is connected with a linkage plate, the linkage plate is slidably connected to the interior of the movable cavity, and a communicating pipe is wound on the outer ring face of the piston rod; one end of the communicating pipe penetrates through the linkage plate and communicates with an upper cavity of the movable cavity, the other end of the communicating pipe is located in a lower cavity of the movable cavity and is connected with a first oil outlet, the first oil outlet penetrates through the hydraulic cylinder and is connected with a first plunger pump, and the other end of the first plunger pump is connected with a first oil inlet through a first connecting pipe; the first oil inlet penetrates through and extends into the lower cavity of the movable cavi