Building material lifting device

The utility model discloses a building material lifting device, which relates to the field of lifting devices and comprises a support rod, a connecting plate fixed on the outer wall of the support rod, a support arm rotatably mounted on the inner side of the connecting plate and used for guiding a lifting hook, and an adjusting mechanism distributed at the joint of the connecting plate and the support arm, the adjusting mechanism is used for adjusting the rotating angle of the supporting arm; the adjusting mechanism comprises a limiting unit and a reset unit. By arranging the adjusting mechanism, when the angle of the supporting arm needs to be adjusted, the angle of the supporting arm can be adjusted by pulling the rotating handle, moving out the limiting block and rotating the rotating handle, so that the height of the end part of the supporting arm is increased or decreased, and then the limiting block is pushed into one limiting groove again; and rotation limiting of the supporting arm is completed, the p