| 摘要 |
The chain consists of plastic links having a bearing surface and a connecting system situated under the bearing surface and including two spaced eyes on one side of the link, one eye situated between the spaced eyes on the opposite side of the link. A hinge pin is pivotally interconnecting a pair of successive links, being embraced by the two spaced eyes associated with one of the links of the pair and the one eye, situated between the spaced eyes, associated with the other link of the pair. The bearing surfaces, the hinge pins and the hinge eyes are designed so that the chain can bend not only about the hinge pins but also in the plane of transport formed by bearing surfaces of the successive links. At the underside of the bearing surfaces guide surfaces extend downwards perpendicularly to the plane of transport. The front edge and the rear edge of the bearing surface of the chain link are, respectively, convexly and concavely curved in the plane of the bearing surface. The single hinge eye at the rear edge of the bearing surface has an upper surface that extends in the same plane as the bearing surface and is provided with a convexly curved end, which hinge eye engages in a correspondingly shaped recess in the bearing surface of the adjacent link coupled through the hinge pin, and that the guide surfaces extend under the bearing surface essentially from the front edge to the rear edge. |
