REPLACEABLE SEMI-CATERPILLAR RUNNING GEAR Russian patent published in 2013 - IPC B62D55/04 

FIELD: transport.

SUBSTANCE: invention relates to automotive industry, particularly, to replaceable semi-caterpillar running gears for harvesters. Running gear comprises one or two pairs of caterpillar movers 1 depending upon the number of harvester drive axles 2 and engine of 4 wheeled tractor 5. Every caterpillar mover comprises drive sprocket 6, frame 7 with support guide wheels 9 with tensioners 10 enveloped by endless caterpillar reinforced rubber belt 11, outer crossbar 12 and inner crossbar 13 with rollers 14. Spring is arranged between the supports of outer and inner crossbars 12, 13 and frame 7 and secured by crossbar length adjusting screw 16. Running gear drive sprocket, an optional element of the harvester, and wheeled tractor engine 4 are mounted at the flange 21 of drive axle 2 with the help of spacer 22 composed of squirrel cage. Outer and inner crossbars 12, 13 are interconnected by studs fitted on both tops of drive sprocket teeth and locked by nuts 30 on both sides.

EFFECT: reliable operation, unified design and road and guide rollers.