INDUSTRIAL TRACTOR Russian patent published in 1994 - IPC

FIELD: vehicles. SUBSTANCE: tractor has a grouser with a removable blade which is vertically and horizontally reciprocated in guides by a drive. The grouser displacement in the vertical plane provides its deepening into the earth and coming out of the earth. The horizontal displacement of the grouser provides tractor movement at increased pulling force by a value of the stroke of a power cylinder rod, and also an idle return of the grouser into the initial position. The main tractor accessories are unloaded. EFFECT: improved structure. 4 cl, 2 dwg