MOTOR GRADER Russian patent published in 2017 - IPC E02F3/76 

FIELD: machine engineering.

SUBSTANCE: motor grader includes a wheeled propulsor, an undercarriage frame and a spinal beam, to the front end of which a draft frame with a rotary circle is pivotally connected, to which by means of the cutting angle changing mechanism and the extension mechanism a blade is connected, connected to the hydraulic cylinders of its lifting and lowering, pivotally connected to the spinal beam and the draft frame, wherein the motor grader has a device for changing the distance between the hinge of fastening the draft frame and the turntable and / or the device for changing the distance between the front end of spinal beam and the hinge of fastening the draft frame, wherein the first of which is in the form of a hydraulic cylinder and is equipped with locks of intermediate and final positions, and the second is in the form of a screw mechanism with intermediate and end stop locks or with a self-locking nut.

EFFECT: increasing the smoothness of the planned base, reducing the amount of permissible deviation from the set value.

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