Importance

Loading Importance Indicators...

Abstract

An arrangement for a hoist secures safety zones in case persons should be outside the hoist cage in a hoist shaft. The arrangement can identify risk situations and includes mechanical limitation devices that can enter into the path of the hoist cage. The limitation devices are arranged at a distance from the upper and lower end limits of the hoist cage during normal operation in order to form upper and lower safety end limits, thereby mechanically securing the safety zones. 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 safety end limits. The striking surfaces are balanced so that they strive to take their respective active states. 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 surfaces in a risk situation so that it takes its respective active state.

Loading the Abstract Image...

First Claim