| 摘要 |
FIELD: electrical engineering.SUBSTANCE: cover device comprises drive drum with resilient web wound thereon and transverse con-rod secured at its end, extra drive and drive pulleys. Load-bearing flexible links are arranged under said resilient web. Draw flexible links are connected with transverse bar via resilient elements. Transverse con-rod is arranged above flexible draw elements to slide thereon. Note here that load bearing flexible links are secured at moving beam by resilient elements. Extra drum diameter equals those of driven drum and drive pulleys.EFFECT: higher reliability and efficiency, longer life.3 dwg |
