ROLLER FOR FLATTENING ROAD BASES Russian patent published in 2010 - IPC E01C19/26 

FIELD: transport.

SUBSTANCE: roller for flattening road bases contains frame of the first stage and frame of the second stage interconnected using articulated joint through which free turning of the first stage relative to the second stage is provided during cornering. The first stage represents double-row pneumatic roller with pneumatic wheels mounted on axles chequerwise so that strips left not flattened by pneumatic wheels of the first row are flattened by pneumatic wheels of the second row. On the frame of the second stage using articulated joints and hydraulic cylinders and via axle steel drum with profile belts mounted on circular surface of drum is installed. Transitions of profile belts working surfaces and steel drum frontal edges have rounded shape and stretch factor of root plants γ is determined as relation of length embracing circular working surfaces of profile belts equal to 2πτ+2 BC and length of profile belts base equal to 4r in cross section. Relation of sizes of heat exchange through frozen water surfaces in profile strips is determined by optimal relation of ε factor: distances between centrelines of profile belts 1 and radii of profile belts r in cross section ε=1/r=8. In front of the first stage of combination roller the planner-leveller is installed using articulated joints and hydraulic cylinders. On the frame of the first stage equipment for hydraulic drive is installed, on the frame of the second stage equipment for electric and heat power generation is installed.

EFFECT: increase in quality and strength of prepared boggy base surface for winter snow roads, in efficiency of flattening process and acceleration of freezing process of flattened boggy surface, simplification of construction design, lowering manufacturing cost and roller operation costs.

1 cl, 6 dwg