FIELD: mechanical engineering.
SUBSTANCE: group of inventions relates to working body assemblies having a system for protection of an edge. The system for protection of an edge for a working body contains: an edge casing containing an upper arm, a lower arm, and a wedge-shaped part connecting the upper arm to the lower arm, and a protrusion for a lever, designed to be placed between the edge casing and the working body, and having an upper side located so that to face the edge casing, a lower side, and a set of side surfaces, while the set of side surfaces form an outer perimeter of the protrusion for the lever. The upper arm, the lower arm, and the wedge-shaped part form a hole for placement of the edge casing on a front edge of the working body. Moreover, the upper side of the protrusion for the lever has an upper surface, which contains at least one surface for the lever, designed to engage with a lever instrument for pushing, under the action of the lever, of the protrusion for the lever from the working body. At least one surface for the lever has an orientation transverse to the upper surface, and it is located relatively to the periphery inside an outer perimeter of the protrusion for the lever. Moreover, the set of side surfaces contains a front surface and a rear surface, and at least one of the upper side or the lower side has an inclined profile between the front surface and the rear surface.
EFFECT: provision of simplification of dismounting.
10 cl, 13 dwg
