Flange stacking device

The invention belongs to the field of article stacking devices, and specifically relates to a flange stacking device comprising a transport vehicle. The transport vehicle is fixedly provided with a first piston cylinder, a second piston cylinder, a baffle and an active plate used for pushing a gear to rotate; the first piston cylinder is provided with a first air hole, and fixedly provided with two fixed rods; the two fixed rods are provided with air bags, lifting rods and gears from bottom to top in sequence, and the gears are engaged with each other; the lifting rods are slidably arranged onthe fixed rods in a sleeving manner; the air bags are fixed to the first piston cylinder and communicate with the first air hole, and one of the lifting rods is connected to a connecting rod of whichthe other end is connected to an extrusion block; the extrusion block is slidably connected to the interior of the second piston cylinder, and a second piston rod is connected to a slide bar; the active plate is provided with