| 摘要 |
A roller lifting device for lifting a track roller of a vehicle equipped with tracks, each track being formed by a plurality of chain links connected in twos by means of connectors. This roller lifting device includes a lifting arm, one end of which co-operates with the axis of rotation of a roller mounted in rotary manner on a rocker and the other end of which is mounted pivotally on a shoe fixed temporarily to a connector located on the inside of the said track. This device also includes a second shoe fixed temporarily to that connector which is axially opposed to the connector to which the first shoe is fixed, and a coupling between the first and second shoes to keep the axial spacing between the shoes constant once the latter have been positioned on their respective connector and throughout the lifting operation so that the safety of the operation is ensured. |
