CONNECTING LINK FOR ROUND LINK CHAIN Russian patent published in 1997 - IPC

FIELD: mechanical engineering; traction chains of mine combines, conveyors. SUBSTANCE: connecting link has two identical half-links, and pin connecting the half-links in center. Each half link has alternating projections and cavities arranged on outer portion of inner strand and on inner portion of outer strand, arranged parallel to each other at an angle relative to longitudinal axis of link. These projections and cavities form toothed pairs in link. Width of central projections and cavities exceeds width of extreme projections and cavities. Extreme toothed pairs have clearance between working end face surfaces of projections. Working side and end face surfaces of projections and cavities of outer and inner strands of half-links are made conical and mating with each other. Conical working side surfaces on outer strands are made concave, and conical working end face surfaces are made convex. Conical working end face surfaces on inner strands are made convex and conical working side surfaces, concave. Radii of curvature of convex working end face and side surfaces of corresponding projection and cavity are smaller by the same value in any section over entire perimeter of their contact and are made increasing towards the end of outer strand and decreasing towards the end of inner strand of half link by constant value. Locus of centers of curvature of surfaces of projections and cavities are straight lines passing in parallel with longitudinal axis of link through point of intersection of axis of symmetry of projections and cavities of outer strand and axis of symmetry of projections and cavities of inner strand and plane arranged square to longitudinal axis of link in which cross axis of link is located. EFFECT: enlarged operating capabilities. 6 dwg