JAW OF WORKING TOOL OF MOTOR GRADER Russian patent published in 2017 - IPC E01H5/06 E02F3/815 

FIELD: mechanical engineering.

SUBSTANCE: invention is relevant to building-road machinery intended for cleaning of road pavements of roads from packed snow formations and ice. For achieving technical result we propose jaw of working tool of motor grader, which includes steel plate with holes intended for fasteners placed on motor-grader dump. Cutting elements mounted at angle to horizontal surface are fastened to the plate lower edge with the aid of holder. At that, holder is equipped with slot on external surface abut to the lower edge of steel plate and connected to it by force of welding joint. In accordance with the invention cutting elements are manufactured in the form of two cutting disks (4) at least provided with cutting edges and mounted on disk holder (3), which is suitable for rotation around its axis at tilt angle of lower base to surface of snow-and-ice swell that is equal to 10° at most. At that, disk holder (3) is manufactured in the form of strip, and welding joint of disk holder with steel plate is manufactured with additional strengthening elements in the form of ribbed stiffeners or angle iron. Disk holder (3) is also provided with holes for bolts (7) intended for nuts (8). Said holes serve for mounting of cutting disks (4) on lower surface of disk holder. At that, intermediate washers (9) are set between disk holder (3) and cutting disks (4) for decreasing friction area.

EFFECT: invention allows simplifying design and increasing efficiency of destruction process for removing snow-and-ice swell.

2 dwg