ROAD GRADER Russian patent published in 1995 - IPC

FIELD: earth-moving machines. SUBSTANCE: road grader has a propeller and under-engine frame and longitudinal beam installed on it. Longitudinal beam comprises back slope part, intermediate part, and front part. Pull frame and rotary circle are hinged from front end of the front part. A blade with a mechanism to meter cutting angle and a mechanism to extend the blade is attached to the rotary circle. Hydraulic cylinders for rising, lowering and extension of pull frame are hinged from the longitudinal beam. The pull frame is connected to the front part of the longitudinal beam so to install it in parallel with the latter when the pull frame is in limiting upper position. EFFECT: high productivity. 1 dwg