| 摘要 |
road-building machinery. SUBSTANCE: bulldozer has base tractor and bulldozer equipment with blade, pushing bars hinge-connected by one end with blade and by other end, with tractor frame, and provided with brackets whose lower ends are secured on pushing bars in middle parts, upper end being connected by hydraulic braces with upper edge of blade. Bulldozer has blade lifting/lowering hydraulic cylinders connected with tractor frame, rods of cylinders being connected with blade. Axles of hinge joints connecting blade with pushing bars with blade lifting/lowering hydraulic cylinder rods are located on one straight line. Hydraulic braces are connected with upper edge of blade for bringing the latter in horizontal position, with working surface downwards, for cleaning from stuck soil. EFFECT: facilitated cleaning of blade from stuck soil. 2 dwg
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