Temporary structure`s e.g. stage, assembly hooking and maneuvering mechanism, has spring mechanism connecting movable frame and assembly on which mechanism is situated, and device to vary position of frame with respect to assembly

摘要

The mechanism has a spring mechanism connecting a movable frame (d) and an assembly on which the mechanism is placed. The spring mechanism transmits a force on the frame to maintain the frame in an unhooked position. A device varies a position of the frame based on the assembly, where the device is controlled either by the action of tension or release of a rope (h) at a preset load, or by the control and handling without using the rope.