Polyurethane impact idler

The utility model provides a polyurethane impact idler which comprises a fixing ring, a plurality of supporting rods and a plurality of supporting rods, the polyurethane sleeve is arranged on the outer side surface of the fixing ring; the first bearings are fixedly installed at the two ends of the inner side face of the fixing ring respectively. And the rotating shaft is fixedly mounted on the inner side surfaces of the two first bearings. Preferably, the polyurethane sleeve is made of polyurethane ethyl formate. The number of the first bearings is two. Sliding cavities are formed in the two ends of the rotating shaft correspondingly, and limiting plates are fixedly mounted at one ends of the two sides of the inner side face of each sliding cavity correspondingly. The inner side face of the sliding cavity is slidably connected with an extension rod. According to the polyurethane buffer carrier roller provided by the utility model, the structures such as the rotating shaft, the first bearing, the fixing ring a