Weight grading and screening device for logistics express

The invention discloses a weight grading and screening device for logistics express. The weight grading and screening device comprises a bottom plate, wherein a rotating cabin is arranged at the top end of the bottom plate and movably connected with the bottom plate through an electric rotating shaft, a collecting box is fixedly arranged at the top end of the bottom plate, and a weight screening mechanism is arranged at the top of the rotating cabin; and a volume screening mechanism is arranged at the top of the collecting box. According to the weight grading and screening device, by arranging the weight screening mechanism, express items are conveyed to a receiving hopper and fall into the receiving hopper, the express items with different weights are pressed on the receiving hopper, the downward moving degrees of an inner rod are different, the inner rod and an electrode column at one end of the inner rod are located in a sleeve, so that the express items with different weights enable the electrode column t