| 摘要 |
PROBLEM TO BE SOLVED: To provide a multi-row chain capable of sealing between an outer peripheral surface of a pin and an inner peripheral surface of a bushing from both ends without changing a lateral pitch and also capable of improving a mechanical strength against flexure or twisting.SOLUTION: This invention is constituted in such a manner that a cylindrical bushing 3 having a length size over several rows of inner link units 2a and 2b is slidably and outwardly installed at pins 1 arranged in a lateral direction of a multi-row chain and at the same time outer plates 9 opposing against intermediate plates 7 and 8 connecting inner plates 4 and 5 among the inner link units 2a and 2b in the several rows are placed at both ends of the pin 1 in the width direction and fixed to the pins 1 and also seal rings 10 enclosing the pins 1 are present among the inner plates 4 and 5 and the outer plates 9.SELECTED DRAWING: Figure 1 |
