| 摘要 |
The present invention concerns an arrangement for a hoist to secure safety zones in case persons should be outside the hoist cage in a hoist shaft, comprising a means of identifying risk situations and mechanical means of limitation that can enter into the path of the hoist cage arranged at a distance from the upper and lower end limits of the hoist cage during normal operation in order to form an upper and a lower safety end limit, mechanically securing the said safety zones. The arrangement involves that striking surfaces are arranged to tilt between an inactive state outside the path of the hoist cage and an active state in the path of the hoist cage forming the said safety end limits, that the striking surfaces are so balanced that they strive to take their respective active states and that a retaining device is arranged on each striking surface to keep the striking surfaces in an inactive state during normal operation and to release the striking surface in a risk situation so that they take their respective active states. <IMAGE> |
