Chainless multi-roller system synchronous transmission device

The utility model belongs to the technical field of conveying mechanisms, and particularly relates to a chainless multi-roller system synchronous transmission device which comprises a base frame and a plurality of transmission rollers, a plurality of transmission boxes are arranged on the outer side of the base frame, and first bevel gears and second bevel gears are symmetrically arranged in the transmission boxes. A third bevel gear is meshed between the first bevel gear and the second bevel gear, a connecting rod is arranged between every two adjacent transmission boxes, the third bevel gear is connected with a transmission rod, the transmission rods are connected with the corresponding transmission rollers, each transmission box comprises a box body, an access door and disassembly doors, the access doors are arranged on the upper side of the box body, and the disassembly doors are arranged on the four side faces of each transmission box. Chain transmission is replaced by gear transmission, transmission sta