The invention discloses a protective device. The protective device comprises a base, a covering part, a pull rope and a rope take-up device, wherein the upper end of the covering part is hinged to the base, and the rope take-up device is fixed relative to the covering part. The rope take-up device comprises a roller capable of rotating around the own axis, and one end of the pull rope is wound on the roller. When the covering part is rotated upwards to be opened, the roller can rotate in the winding direction of the pull rope, and when the covering part is rotated downwards to be closed, the roller can rotate opposite to the winding direction of the pull rope. When the covering part is rotated upwards in the using process, the pull rope is paid off. When the covering part needs to be closed, the covering part is pulled by the pull rope to rotate downwards, at the moment the roller rotates opposite to the winding direction of the pull rope to take up the pull rope, and therefore the pull rope can be prevented from hanging outside the covering part. The protective device can effectively solve the problem that the pull rope hangs below the covering part.
Protective device and high-altitude operation vehicle
2015-12-09
Patent
Electronic Resource
English
IPC: | B66F HOISTING, LIFTING, HAULING, OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD , Hub-, Verhol- oder Schubvorrichtungen, soweit nicht anderweitig vorgesehen, z.B. Vorrichtungen mit unmittelbarer Krafteinwirkung auf die Last |
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