| 摘要 |
The lift system comprises a lift cage, a roller arrangement and a support and/or drive and/or guide element in the form of a belt (30). The roller arrangement comprises two rollers (10, 20) with axes (12 or 22) of rotation which are approximately parallel. The rollers (10, 20) have structured circumferential surfaces (13, 23) with parallel roller ribs (17.1) and roller grooves (17.2) and rotate in opposite sense when the lift cage is moved. The belt (30) forms an under-looping for support of the lift cage. It runs directly from the roller (10) to the roller (20). The belt (30) has a structured belt main surface (33) which is complementary to the structures of the rollers (10, 20). In a region (A) disposed between the two rollers (10, 20) the belt (30) is twisted about the longitudinal axi s (32) thereof so that the belt main surface (33) comes into engagement with the circumferenti al surfaces (13, 23) of the two rollers (10, 20) when the belt (30) runs over the roller s (10, 20) rotating in opposite sense. |
