Hydraulic clamping repaking machine

The utility model discloses a hydraulic clamping repaking machine which comprises a repaking clamping device, a cross beam track and a hoisting balance device, wherein guide wheels are arranged at the upper parts of two clamping arms of the repaking clamping device, the cross beam track is clamped between the guide wheels, the hoisting balance device is fixed above the middle of the cross beam track, gear rack swing hydraulic cylinders are arranged on the two clamping arms of the repaking clamping device and can drive a flap gate to rotate by 180 degrees from a horizontal state or return to the horizontal state, the two clamping arms can move along the cross beam track by a synchronous chain and a signal cylinder so as to realize clamping or loosening on sand moulds or sand boxes with different spans, and the hoisting balance device is used for adjusting the gravity center balance of the sand moulds or the sand boxes with different spans. Compared with the existing repaking machine, the hydraulic clamping rep