SMALL-SIZED FARM TRACTOR Russian patent published in 1994 - IPC

FIELD: vehicles. SUBSTANCE: longitudinal beams carrying additional bearing wheels arranged before the main drive wheels are kinematically connected with levers that carry handles installed on the steering rod for turning in the longitudinal-vertical plane. On each side the additional and main wheels are enveloped by a closed flexible caterpillar track. The above kinematic coupling is effected by means of two tie-rods, adjustable in length and stiffness, and two arms mounted on a single transverse shaft with the levers that carry the handles and can change their angular position relative to the levers and be fixed in the extreme positions by a spring-loaded bar provided with a pulling handle. EFFECT: enhanced reliability. 3 cl, 10 dwg