MOTOR GRADER Russian patent published in 1995 - IPC

FIELD: earth-moving and transportation machines. SUBSTANCE: motor grader includes wheel mover having balance beams with their axle of rocking and carrying center girder with its rear inclined part, engine bed hinged to each other, and two hydraulic cylinders for turning center girder relative to engine bed. Hinged to front end of center girder is pulling frame. Hinged to center girder and pulling frame are hydraulic cylinders for carrying out pulling frame and lifting and lowering of blade. Angle between plane running through longitudinal axes of hydraulic cylinders for turning center girder and supporting plane of motor grade is within 2-4 deg. Plane running through longitudinal axes of hydraulic cylinders for turning center girder may be parallel to rear part of center girder or run through axis of rocking of balance beams. EFFECT: higher efficiency. 3 dwg