Automatic control device of half guide rod type bucket body position of hydraulic grab bucket of continuous wall

Provided is an automatic control device of a half guide rod type bucket body position of a hydraulic grab bucket of a continuous wall. The automatic control device of the half guide rod type bucket body position of the hydraulic grab bucket of the continuous wall is characterized by comprising an encoder, a controller, an electromagnetic proportional valve, a bucket body rotary hydraulic motor and a rotary reducer, the encoder is installed on a central shaft of the rotary reducer, a signal output end of the encoder is connected with a corresponding signal input end of the controller, a signal output end of the controller is connected with a corresponding signal input end of the electromagnetic proportional valve, the electromagnetic proportional valve is connected with the bucket body rotary hydraulic motor through a hydraulic circuit, and the bucket body rotary hydraulic motor is connected with the rotary reducer through a connecting shaft. The automatic control device of the half guide rod type bucket body