Jacking device of reversed loader

The utility model provides a reversed loader jacking device which is arranged behind the tail of a belt conveyor, the top of the reversed loader jacking device is supported on the lower side of a reversed loader head, the reversed loader jacking device comprises a base, two hydraulic jacks are fixedly connected to the base, and the upper ends of the two hydraulic jacks are fixed to shaft ends on the two sides of a roller respectively. Wherein the hydraulic jack comprises a high-pressure liquid tank, a valve bank, a one-way lock, a three-way adapter pipe and a foot lifting jack which are connected through a high-pressure oil pipe, an oil inlet connected with the high-pressure liquid tank is formed in one side of the valve bank, the valve bank is provided with a control handle, and a liquidinlet and a liquid return port are formed in the other side of the valve bank; the one-way lock is internally provided with a liquid inlet and passing cavity, a liquid return and passing cavity and adirection valve core for c