| 摘要 |
<p>An automatic orbital up-down scaffold, which includes take-up device (4) below the scaffold (3); pre-adjust tense device (1) upside the scaffold (3); a guide chain device (2), which links the impending end of the pre-adjust tense device (1) and the both free end of the take-up device (4) respectively. Said up-down scaffold also includes multifunctional appendiculate support device (6), which is connected with building. The take-up device (4) is fixed to the scaffold (3), the guide chain device (2) and the pre-adjust tense device (1) are adjusted, without moving the up-down device and the point of handing manually. The pre-adjust tense device (1) can automatically adjust the length of both the take-up end and the out-chain end due to the change of angle as moving up and down, in order to the both end can up and down isochronous and can prevent from locking. The pre-adjust tense device (1) can assure the scaffold to endure the even load as up and down.</p> |
