Picking claw for hub casting blank and control system thereof

The invention discloses a picking claw for a hub casting blank. The picking claw for the hub casting blank comprises a clamping mechanism, a steering mechanism and a lifting mechanism, wherein the clamping mechanism comprises clamping claws, a piston device and an extending arm; the clamping claws are connected to connecting rods of the piston device which is connected to one end of the extendingarm; the steering mechanism comprises a fixing rack, and a rotating power device which is connected to the fixing rack; a rotating shaft of the rotating power device is connected to the other end of the extending arm; a lifting rod of the lifting mechanism is fixedly connected to the fixing rack. The invention also discloses a control system of the picking claw for the hub casting blank. The control system comprises a main control system and a feedback device, wherein the main control system and the picking claw for the hub casting blank form a closed control system through the feedback device. According to the pickin