| 摘要 |
<p>A link of a conveyor chain, comprising means for articulated connection to a similar and adjacent link (1) and a main base body (2) which comprises two shoulders (10a, 10b), which protrude upward from the ends of the transverse sides of the main base body (2) and are arranged parallel to the direction of advancement of the chain, the ends of a pair of first and second shafts (9a, 9b) being associated with the pair of shoulders (10a, 10b), first rollers (14) being rotatably associated with the shafts (9a, 9b). Second rollers (15) are associated on the pair of first and second shafts (9a, 9b), have a smaller diameter than the first rollers (14), and are supported in a loaded condition by at least one pair of first supporting elements (12a, 12b, 12c, 12d), which can be activated when a load passes, protrude from the main base body (2) and lie or not on a same plane which is transverse with respect to the pair of first and second shafts (9a, 9b). The link further comprises a third shaft (9c), with which first rollers (14) are associated rotatably; the third shaft (9c) is supported by at least one pair of second supporting elements (51a, 51b), which protrude from the main base body (2) and lie on a plane which is parallel and distinct with respect to the plane of arrangement of the first supporting elements (12a, 12b, 12c, 12d), the ends of the third shaft (9c) being free.</p> |
