Abstract: A loader work machine has a base frame including a cabin; a loader work apparatus attached to the base frame; and two traveling apparatuses supporting the base frame, and including: a track frame connected to the base frame; a drive wheel driving a traveling belt; front and rear idlers arranged in a front-back direction below the drive wheel and supported by the track frame; and one or more track rollers arranged between the front and rear idlers and supported by the track frame, the traveling belt stretched around the drive wheel, idlers, and track rollers. The base frame includes: a lower frame connected to two track frames and interposed between the traveling apparatuses; an upper frame provided with the loader work apparatus; and a slewing apparatus connecting the upper and lower frames. The upper frame connected to the lower at an upper frame bottom surface being above the traveling belts.

Abstract: In order to prevent vehicle body of a truck-loader type from causing undesirable vibrations and noises during its running, improvement is effected on its construction, so as to reduce and absorb vibrations and noises. For solving such problem, a truck-roller 1 to be pivotally supported on the truck frame b which is mounted on both left and right sides of the vehicle body a of the truck-loader type vehicle is shaped individually and separately in its inner wheel 1a and outer wheel 1b; then, these inner wheel 1a and outer wheel 1b are formed in a spacer D between an outer peripheral surface of the inner wheel 1a and an inner peripheral surface of the outer wheel 1b, to thereby be assembled into the truck-roller 1. In this way, undesirable vibrations are absorbed by the elastic material 2 filled in the spacer D.