FIELD: transportation.
SUBSTANCE: invention relates to a device in a forestry machine, wherein the device has a chassis (12), a uniaxial set of rollers pivotally attached to the chassis (12), and at least one auxiliary roller (18) mounted outside the roller set in order to increase the rear chassis (12) bearing capacity. The apparatus further comprises at least one support arm (20) adapted to support the said auxiliary roller (18) at its first end (22), and pivotally attached at its second end (24) to the chassis (12) via a transverse shaft ( 23), a supporting surface (36) attached to the chassis (12) and an opposite surface (38) attached to the said support arm (20) to limit the transverse movement of the support arm (20). The invention also relates to the appropriate forestry machine.
EFFECT: lower surface pressure on the ground and good manipulation.
16 cl, 11 dwg
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