| 摘要 |
A balanced lifting and suspending device (10) has a motor drive (12), a device (13) for continuously sensing the forces during all movements, and a regulating device (R) which regulates and reduces the weight of the object to a preadjustable value. Due to an external force, the object is moved by the resulting power surplus. The motor drive (12) is directly connected to the object via a rope (14), and the device for sensing the forces senses the rope force, the regulating device (R), after regulating the preadjustable weight value, switches over to a control system which moves the object as a function of the change in the rope force. This ensures that a natural working rhythm can be retained and yet a favourable rope-tackle technique can be used. <IMAGE> |
