The invention belongs to the technical field of mining machinery shell manufacturing, and discloses a mining machinery shell mould feeding device which comprises a feeding pipe, a feeding chute, a screw rod, a concealed box, a movable tank, a hydraulic rod ejection seat and a hydraulic rod device. The feeding chute is formed in the feeding pipe; the screw rod is arranged in the feeding chute; a charging block is arranged on the left side of the feeding pipe; the concealed box is arranged on the left side of the charging block; a horizontal sliding chute is formed in the concealed box; the movable tank is arranged in the horizontal sliding chute; a rotary motor is arranged in the movable tank; a rotary shaft of the rotary motor is connected with the right side of the screw rod; the hydraulic rod device is arranged on the left side of the horizontal sliding chute; a clamping and inserting block is arranged on a hydraulic outer rod; a fixed piece is arranged on an inlet of the horizontalsliding chute; through the clamping and inserting connection of the clamping and inserting block and the fixed piece, the screw rod can be installed and conveniently taken out at the same time; and the rotary motor and the screw rod are connected in a screw-thread meshing way, so that the screw rod is easy to disassemble, convenient to operate, economized on manpower and material resources, and high in working efficiency.