Winch device for lifting and lowering display support and public object, has strands mounted on common shaft and motor for driving shaft and winding modules, where each strand releases independently when object contacts bearing

摘要

The device has strands (4) mounted on a common shaft (2), and a motor (1) for rotatably driving the shaft and for driving winding modules (3) of the strands. Each strand is released independently and automatically, when an object is in contact with a bearing. Each module is connected to the shaft by friction under the action of a spring (7) whose pressure defines releasing torque.