Building material lifting device

The utility model relates to the technical field of material lifting devices, in particular to a building material lifting device which comprises a hopper, a shielding cover, a pressing plate, two connecting ropes, a mounting plate, a vertical plate, two fixing plates, two rotating shafts and two guide wheels. A driving assembly is arranged on the vertical plate; the mounting plate is mounted on the vertical plate, and a winding assembly is arranged on the mounting plate; the two fixing plates are mounted on the shielding cover; the two rotating shafts are rotationally arranged in the two mounting holes respectively; the two guide wheels are respectively mounted on the two rotating shafts; the pressing plate is mounted on the shielding cover; the bottoms of the two connecting ropes are both installed on the hopper. A user accumulates building materials in the hopper, the pressing plate drives the shielding cover to cover the hopper, then the building materials in the hopper are prevented from falling off, mea