SCRAPER BOWL Russian patent published in 1998 - IPC

FIELD: scraper bowls. SUBSTANCE: scraper bowl has blade thrower with concentrically located fixed and movable casings, front gate, rear movable wall and rear wheels. Bowl side walls are fixed to longitudinal beams of bowl frame. Bottom-gate rests on three transverse beams which are secured to frame longitudinal beams and overturned by two hydraulic drives hinged with their one ends to brackets located on bowl arm, and with their other ends. They are hinged to two braces overturning the bottom-gate. Installed behind bowl is rotor whose diameter is proportional to bowl volume and length corresponding to bowl width. Rotor is rotated by two hydraulic motors with coaxial driving shafts. Rotor may be moved upward and downward to fulfill role of earth cutting member, earth thrower and additional earth unloading and levelling device. Bowl loading and unloading from earth in automatic mode are fulfilled by hydraulic systems controlled by microprocessor. EFFECT: higher efficiency of earth loading due to reduced specific power taken per unit volume of handled earth. 6 dwg