Structural improvement of carrier roller assembly of crawler excavator

The utility model discloses a structural improvement of a carrier roller assembly of a crawler excavator. The structural improvement of the carrier roller assembly of the crawler excavator comprises a wheel shaft, a wheel body, a pressing cover and an oil sealing cover. One end of the wheel shaft is an installing end, the other end of the wheel shaft is a working end, the wheel body is arranged on the working end, the pressing cover and the oil sealing cover are respectively arranged on the two opposite end faces of the wheel body, therefore, the working end is sealed in the wheel body, the installing end passes through the oil sealing cover and stretches out of the wheel body, and the installing end and the oil sealing cover are assembled together in an interference fit mode. According to the structural improvement of the carrier roller assembly of the crawler excavator, when the installing end is fixed on a chassis of the crawler excavator, crawler belts of the crawler excavator press the wheel body, due to