| 摘要 |
PROBLEM TO BE SOLVED: To solve a problem that since a roller is rotatable in a conventional conveyor chain, in contrast thereto, a sleeve is integrated with a bushing and is not rotated, eccentric abrasion is easily generated on the sleeve and it is insufficient as wearing countermeasure. SOLUTION: The chain 1 has outer plates 5a, 5b opposed to each other. Further, the chain 1 has inner plates 3a, 3b opposed to each other similarly. The inner plates 3a, 3b have bushing fitting holes 21a, 21b on ends respectively. Both ends of the bushing 7 are fitted to the bushing fitting holes 21a, 21b respectively and a cylindrical roller 9 is rotatably mounted on an outer periphery of the bushing 7. The cylindrical sleeve 11 is rotatably provided between the bushing 7 and the roller 9, however, since the sleeve 11 is clamped in the inner plates 3a, 3b, rotation of the sleeve 11 is suppressed by the inner plates 3a, 3b. Accordingly, eccentric abrasion is hardly generated on the sleeve 11. COPYRIGHT: (C)2007,JPO&INPIT
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