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

FIELD: transportation.

SUBSTANCE: motor grader includes a wheeled propulsor, a sub-engine frame and a center girder, mounted on the propulsor and connected by a hinge and hydraulic rotation cylinders; to the front end of the center girder, a pulling frame with a rotary circle is hingedly mounted, on which a blade with mechanisms for changing the cutting angle and the blade extension and cylinders for lifting and lowering the blade are mounted. The rotation axis of said hinge is located in the vertical plane with an inclination at an acute angle to the support surface of the motor grader, and the hinge body is fixed with the possibility of the compensating movement across the motor frame in the rotation direction in proportion to the value of the center girder rotation.

EFFECT: reducing the negative effect of loads arising when the motion direction of the motor grader changes during the soil displacement by the value of deviation from the specified trajectory.

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