WORKING MACHINE

摘要

The invention relates to a working machine (1) which is fitted with a wheel assembly (3) adapted to run on a railroad track. The working machine includes, among other things, an excavating device (5) which is pivotally mounted on the chassis of the machine, and tow support legs (6, 6a) that are side-related to the longitudinal extension of the chassis and located inthe proximity of the excavating device. Each support leg is pivotally mounted to the chassis on a respective pivot shaft (7, 7a). The wheel assembly is carried by a frame arrangement (8). The frame arrangement (8) is fixed in relation to the pivot shaft (7, 7a) of the support legs via bearing blocks (8a, 8b). The frame arrangement and the wheel assembly (3) are interconnected by a horizontal pivot shaft (9). A piston-cylinder device (10, 11) acts between the frame arrangement (8) and the wheel assembly (3) to raise the wheels (3a, 3b) from an underlying rail section (13, 13a) or to lower said wheels onto said rail section.