Rope winding system for winding and unwinding steel ropes of cranes
View Patent ↗The present invention relates to a rope winding system ( 1 ) for winding and unwinding a steel rope ( 4 ) of a crane ( 7 ). A rope winding system ( 1 ) according to the present invention has a rope drum ( 6 ), onto which the steel rope ( 4 ) can be wound in a plurality of layers, and a magnetic system ( 7 ) which is configured to generate a magnetic field over a section of the steel rope ( 4 ) with its magnetic flux being deflected by a movement of the steel rope ( 4 ) in such a way that the steel rope ( 4 ) is braked. A crane ( 7 ) is also discloses which is equipped with such a rope winding system ( 1 ) for winding and unwinding a steel rope ( 4 ).
1. A rope winding system ( 1 ) for winding and unwinding a steel rope ( 4 ) of a crane ( 7 ), comprising
the steel rope ( 4 ),
a rope drum ( 6 ) onto which the steel rope ( 4 ) is to be wound in several layers,
a magnetic system ( 3 ) arranged in such a way that it generates a magnetic field around a section of the steel rope ( 4 ) having a magnetic flux which is deflected by a movement of the steel rope ( 4 ) in such a way that the steel rope ( 4 ) is braked, and
a rope guiding apparatus ( 5 ) which includes guiding pulleys ( 2 ) arranged in opposing pairs in front of and behind the magnetic system ( 3 ) in order to guide the steel rope ( 4 ).
2. The rope winding system ( 1 ) according to claim 1 , wherein the magnetic system ( 3 ) is an eddy current brake.
3. The rope winding system ( 1 ) according to claim 1 , wherein the magnetic system ( 3 ) is connected to an electric current supply.
4. The rope winding System ( 1 ) according to claim 1 , further comprising a load detecting means wherein said load detecting means is a sensor.
5. The rope winding System ( 1 ) according to claim 4 , wherein the sensor is mounted on the magnetic System ( 3 ).
6. The rope winding system ( 1 ) according to claim 1 , wherein the rope drum ( 6 ) is a hoist line drum.
7. The rope winding system ( 1 ) according to claim 1 , wherein the rope drum ( 6 ) is hydraulically driven.
8. A crane comprising a rope winding system ( 1 ) said rope winding system ( 1 ) including:
the steel rope ( 4 ),
a rope drum ( 6 ) onto which the steel rope ( 4 ) is to be wound in several layers,
a magnetic system ( 3 ) arranged in such a way that it generates a magnetic field around a section of the steel rope ( 4 ) having a magnetic flux which is deflected by a movement of the steel rope ( 4 ) in such a way that the steel rope ( 4 ) is braked, and
a rope guiding apparatus ( 5 ) which includes guiding pulleys ( 2 ) arranged in opposing pairs in front of and behind the magnetic system ( 3 ) in order to guide the steel rope ( 4 ).
9. The crane according to claim 8 , wherein the crane is a mobile crane.
10. The crane according to claim 8 , wherein the crane is a tower slewing crane.
11. The crane according to claim 8 , wherein the rope winding system ( 1 ) further comprises a rope guiding apparatus ( 5 ).
12. The crane according to claim 11 , wherein the rope guiding apparatus ( 5 ) includes guiding pulleys ( 2 ) arranged in opposing pairs in front of and behind the magnetic system ( 3 ) in order to guide the steel rope ( 4 ).
13. The crane according to claim 8 , wherein the magnetic system ( 3 ) is an eddy current brake.
14. The crane according to claim 8 , wherein the magnetic system ( 3 ) can be connected to an electric current supply.
15. The crane according to claim 8 , wherein the rope guiding means ( 5 ) has a load detecting means to measure a load applied to the steel rope.
16. The crane according to claim 15 , wherein the load detecting means includes a load detector.
17. The crane according to claim 16 , wherein the load detector is integrated into a yoke of the magnetic system ( 3 ).
18. The crane according to claim 15 , wherein the load detecting means is a sensor.
19. The crane according to claim 18 , wherein the sensor is mounted on the magnetic System ( 3 ).
20. The crane according to claim 8 , wherein the rope drum ( 6 ) is a hoist line drum.
21. The crane according to claim 8 , wherein the rope drum ( 6 ) is electrically driveable.
22. The crane according to claim 8 , wherein the rope drum ( 6 ) is hydraulically driveable.
23. A rope winding system ( 1 ) for winding and unwinding a steel rope ( 4 ) of a crane ( 7 ), comprising
the steel rope ( 4 ),
a rope drum ( 6 ) onto which the steel rope ( 4 ) is to be wound in several layers,
a magnetic system ( 3 ) arranged in such a way that it generates a magnetic field around a section of the steel rope ( 4 ) having a magnetic flux which is deflected by a movement of the steel rope ( 4 ) in such a way that the steel rope ( 4 ) is braked wherein said deflection is made without physically contacting said steel rope ( 4 ); and
a rope guiding apparatus ( 5 ) which has a load detecting means to measure a load applied to the steel rope ( 4 ), wherein the load detecting means includes a load detector that is integrated into a yoke of the magnetic system ( 3 ).
24. A rope winding system ( 1 ) for winding and unwinding a steel rope ( 4 ) of a crane ( 7 ), comprising:
the steel rope ( 4 ),
a rope drum ( 6 ) onto which the steel rope ( 4 ) is to be wound in several layers and wherein said rope drum ( 6 ) is electrically driven, and
a magnetic system ( 3 ) arranged in such a way that it generates a magnetic field around a section of the steel rope ( 4 ) having a magnetic flux which is deflected by a movement of the steel rope ( 4 ) in such a way that the steel rope ( 4 ) is braked, wherein said deflection is made without physically contacting said steel rope ( 4 ).
25. A rope winding system ( 1 ) for winding and unwinding a steel rope ( 4 ) of a crane ( 7 ), comprising
the steel rope ( 4 ),
a rope drum ( 6 ) onto which the steel rope ( 4 ) is to be wound in several layers, and
a magnetic system ( 3 ) arranged in such a way that it generates a magnetic field around a section of the steel rope ( 4 ) having a magnetic flux which is deflected by a movement of the steel rope ( 4 ) in such a way that the steel rope ( 4 ) is braked, wherein said deflection is made without physically contacting said steel rope ( 4 ) and wherein the magnetic system ( 3 ) has a means for adjusting a braking force on the steel rope ( 4 ) and therefore the rope load of the steel rope ( 4 ), in order to continuously detect and control the rope load for applying an optimal rope load whenever the steel rope ( 4 ) is wound onto the rope drum ( 6 ).
26. A rope winding system ( 1 ) for winding and unwinding a steel rope ( 4 ) of a crane ( 7 ), comprising
the steel rope ( 4 ),
a rope drum ( 6 ) onto which the steel rope ( 4 ) is to be wound in several layers, and
a magnetic system ( 3 ), said magnetic system being a hysteresis brake that is arranged in such a way that it generates a magnetic field around a section of the steel rope ( 4 ) having a magnetic flux which is deflected by a movement of the steel rope ( 4 ) in such a way that the steel rope ( 4 ) is braked, wherein said deflection is made without physically contacting said steel rope ( 4 ).