CHAIN TRACK Russian patent published in 2013 - IPC B62D55/104 

FIELD: transport.

SUBSTANCE: invention relates to crawlers for self-propelled harvesters. Chain track comprises a frame 1, endless reinforced rubber caterpillar chain 2, drive sprocket 3, guide wheel 4 with tensioner 5, support rollers, support rollers 6, and road rollers 9. Road rollers 9 are fitted at carriage 20 coupled with crossbar by means of guide bushes 7 and resilient spring 9. Crossbar lengthwise profile features convex side directed upward for rollers 12 to rest upon. Carriage 10 with crossbar 11 is hinged to frame 1 by flexible links 13 and composed of adjustable-length chain. Rollers 12 of crossbar 11 are arranged to run on separated beam 14 attached to frame 1 by bolts 15, nuts 16 and spring 8. Crossbar 11 is welded to carriage 10 to make common perforated base 19 whereto road rollers 9 are attached. Carriage 10 with road rollers 9 runs over caterpillar chain 2 to follow terrain relief.

EFFECT: efficient operation in extreme conditions.

2 cl, 4 dwg