LOGGER RUNNING GEAR Russian patent published in 2013 - IPC B62D55/08 B62D21/14 B60B35/10 

FIELD: transport.

SUBSTANCE: invention relates to logger running gear, primarily, with crawler propulsors to be used in forestry. Proposed system comprises bearing frame 1 to carry rotary support round table 2. Crawler propulsor bearing beams 3, 4 are articulated with bearing frame by device designed to change the running gear track. Drive sprockets with their drives, wheels and track assemblies 5, 6 with their tensioners are coupled with sad beams 3, 4. Said devices designed to change the running gear track comprises pivots 7, 8, 9, 10 to couple beams 3, 4 with sliders 11, 12, 13, 14. Other ends of said sliders are fitted in guides 15, 16, 17, 18 rigidly secured at bearing frame to be displaced thereat by hydraulic cylinders 19, 20, 21, 22. One ends of said hydraulic cylinders are articulated with guides 15, 16, 17, 18 and their opposite ends are hinged to sliders 11, 12, 13, 14.

EFFECT: higher flotation.

3 cl, 1 dwg