FASTENER FOR ATTACHMENT OF WEARING ELEMENT ON SUPPORT FRONT EDGE Russian patent published in 2022 - IPC E02F9/28 

FIELD: machine building.

SUBSTANCE: invention relates to fasteners for fastening a wearing element on a front edge of a support. Fastener comprises: C-shaped body, a wedge and a screw with a shank containing a first part with a diameter less than the diameter of the head; the second part, diameter of which is greater than the diameter of the first part, a threaded part, and a nut. Screw shank is installed between the wedge and the housing. C-shaped body comprises a C-shaped projection adapted to accommodate the first part of the screw. Height of the projection is equal to the height of the first part. Neither the head nor the second part can pass through the projection. Wedge comprises first ledge and second ledge. Both protrusions have through holes, allowing the threaded part to pass through them and not allowing the nut to pass through them, note here that distance between first ledge and second ledge in axial direction is greater than nut height in axial direction.

EFFECT: protection of screw thread from impact loads acting on wedge.

5 cl, 10 dwg