LOGGING TRACTOR Russian patent published in 1994 - IPC

FIELD: forestry. SUBSTANCE: tractor has frame, loading device formed by loading shield 21 and winch 16 whose cable 24 is linked with choking grip. Casings 2 of transmission gears are connected to front ends of support beams 6 of track propellers 9 and pivotally secured to body 1 of main front transmission for turning in the vertical plane by hydraulic cylinder 4 located between casings of main and side transmission gears. Additional frame 12 is T-shaped. Lateral section of the frame is positioned on body 1 of the main transmission, whereas the width of longitudinal section 18 of the frame is smaller than the distance between support beams to ensure travel of this portion of the frame relative to support beams of the propellers. Winch 16 is provided at longitudinal section 18 of the frame to overlie gear box whose output shaft is connected to the main transmission. EFFECT: improved design, more reliable operation. 3 cl, 4 dwg