Vibrating type multi-stage coal screening machine

The invention provides a vibrating type multi-stage coal screening machine, and relates to the technical field of coal screening. The multi-stage coal screening machine comprises a screening box, the rear end, close to the upper surface, of the screening box is fixedly connected with a feeding box, the inner wall, close to the rear end of the upper portion, of the screening box is fixedly connected with a material guiding box, and the front end of the interior of the material guiding box is rotationally connected with a first rotating rod; one side of the first rotating rod penetrates through the guide box and the screening box to the exterior of the screening box and is fixedly connected with a first transmission gear and a main gear, the upper end of the outer wall of one side of the screening box is fixedly connected with a first servo motor, and the output end of the first servo motor is fixedly connected with the side, away from the screening box, of the first rotating rod; three second rotating rods are