| 摘要 |
A modular conveyor belt (10) forming a hinge between consecutive belt rows hingedly connected by a rolling hinge pin pair (34). Hinge eyes (28) along the forward and rearward ends of each row of belt modules include aligned openings (30) for the hinge pins. The belt rows are arranged end-to-end with the hinge eyes of adjacent rows interleaved. The hinge pin pairs (34) are inserted side by side in the passageway formed by the aligned openings (30) of the interleaved hinge eyes (28). The hinge pin pairs include first and second hinge pins (40, 41) having outer contact surfaces. The openings in the hinge eyes are characterized by a narrow end (32) with constraining surfaces for positioning the first hinge pin and flaring out to a wider second end (33) bounded by a roll surface that gives the second hinge pin clearance to roll along the roll surface as the belt articulates. During belt articulation, each hinge pin of the pair rolls against the other and along the roll surfaces instead of sliding against the walls of the openings.
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