Carrier roller replacing device for belt conveyor

The invention discloses a carrier roller replacing device for a belt conveyor. The carrier roller replacing device comprises first sliding frames, first connecting plates, second sliding frames, second connecting plates, supporting belt bases, supporting belt base frames, first telescopic arms, second telescopic arms, bases, base rotating tables, large arms, small arms, gripper rotating tables andgrippers; slide ways are arranged on the first sliding frames, the first sliding frames are fixed on maintenance walking mechanisms A for realizing the left-and-right movement of the carrier roller replacing device of the belt conveyor; the first connecting plates are composed of steel plates, and are fixed on the second connecting plates; slide ways are arranged on the back surfaces of the second connecting plates, and the second connecting plates are connected with the first sliding frames; the second sliding frames are fixed on the first connecting plates for realizing the grabbing function and being moved up and