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

FIELD: machine engineering.

SUBSTANCE: working equipment includes a center sill, a traction frame pivotally attached to the center sill, a blade attached to the traction frame by means of a rotary circle, a mechanism for changing the blade cutting angle, and a mechanism for extending the blade relative to the traction frame that includes an extension hydraulic cylinder, a lower guide having a circular cross-section, and an upper guide having a rectangular cross-section, in the upper guide with gaps relative to the upper wall to forms a vertical gap, a rod with elastic limiter of its vertical displacement is vertically arranged in vertical motion and connected to blade rear wall and is relative to the side walls to form a gap in horizontal, wherein sum of gap values in vertical exceeds the sum of gap values in horizontal.

EFFECT: reliability of blade structure and mechanisms connected thereto under effect of extreme peak loads on the blade, including transverse blade movement during motor grader operation if necessary.

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