Lubrication apparatus of traveling wheel

The utility model relates to a travelling pulley lubricating device, which belongs to the field of lubricating devices and comprises a pulley shaft with a shaft sleeve. The technical points lie in that at least two oiling holes are axially and horizontally processed at the end of the pulley shaft and are respectively communicated with oil inlet holes which are radially processed on the pulley at the position of the shaft sleeve. After the utility model carries out improvement to the prior art, as the oiling holes are arranged at the end of the pulley shaft, oiling lubrication can be conveniently carried out to the pulley shaft and the shaft sleeve without space limitation of equipment, therefore, the utility model has the advantages of simple structure, being capable of carrying out oiling lubrication to the pulley shaft and the shaft sleeve conveniently and prolonging the service life of the pulley shaft and the shaft sleeve.