Cable handling system
View Patent ↗A system or apparatus and method for retrieving cable from water during marine operations is provided that reduces damage to the cable from pulling forces during the retrieval. A pulling device distributes the forces and stresses all along the cable components. In one embodiment, the pulling drive comprises a pulling drum powered by a clutching system or by a hydraulic torque conversion system set to slip or stall at a selectable force value. The apparatus may use a see-saw action to maintain the forces below damaging levels. The system may be adapted for deploying cable in marine operations as well.
1. A system for retrieving cable from water during marine operations employing a floating vessel, said system comprising:
a distributor for distributing forces across all components of the cable while pulling said cable;
an adjuster for automatically adjusting the pulling forces on the cable caused by movement of said vessel in the water; and
a holding area on said vessel for said cable, said holding area comprising a cylindrical cage whose outside perimeter has vertical slots from a top edge thereof and whose interior comprises a raceway path and a smaller diameter cylinder about the central point of said cylindrical cage.
2. The system of claim 1 wherein said distributor and adjuster employ a see-saw action in making the adjustments in the pulling forces.
3. The system of claim 1 wherein said distributor and adjuster comprise a pulling drum powered through a hydraulic torque conversion system set to slip or stall at a selectable force value, which if exceeded will allow payback out to lessen forces on the cable.
4. The system of claim 1 wherein said distributor and adjuster comprise a pulling drum powered through a hitching system set to slip or stall at a selectable force value, which if exceeded will allow payback out to lessen forces on the cable.
5. The system of claim 1 wherein said distributor and adjuster comprise a powered pulling drum with regulatable drive torque that may be monitored and adjusted to control the force on the cable.
6. The system of claim 5 wherein said pulling drum is powered by an electric motor.
7. The system of claim 5 wherein said pulling drum is powered by a mechanical motor.
8. The system of claim 5 wherein said pulling drum is powered by a hydraulic motor.
9. The system of claim 5 further comprising
a dampener for dampening stress applied to the cable from movements of said vessel, at least one roller for leading said cable to said pulling drum, and
a guider for guiding said cable over said at least one roller.
10. The system of claim 9 wherein said dampener and said guider comprise a damper arm located in front of said pulling drum at the entry point of the cable on said vessel.
11. The system of claim 9 wherein said dampener keeps tension on said cable constant.
12. The system of claim 1 wherein said distributor and adjuster comprise a pulling drum and a clutching system.
13. The system of claim 1 wherein said distributor and adjuster comprise a pulling drum and a torque conversion system.
14. The system of claim 1 wherein said smaller cylinder is topped with a cone whose base has the same diameter as said smaller cylinder.
15. The system of claim 14 wherein said cone is capped with a suspendably mounted smaller cone attached to a drive motor to rotate said smaller cone on its axis.
16. The system of claim 15 further comprising an arm protruding from said smaller cone for sweeping around and above said smaller cone to direct the cable to be deposited around the cage in the raceway area.
17. The system of claim 15 further comprising a powered drum for delivering the cable from said adjuster to said holding area.
18. The system of claim 17 wherein said powered drum delivers the cable to the peak of said smaller cone.
19. The system of claim 1 wherein said cable comprises attachments and said cylindrical cage comprises a lip extending from its inner wall for holding said cable attachments until the cable attachments fall outside said raceway.
20. The system of claim 19 wherein said raceway is smaller in width than the attachments to said cable.
21. The system of claim 19 wherein said lip directs the cable to fall into said raceway.
22. The system of claim 19 further comprising support brackets outside the cylindrical cage for receiving and holding said attachments to said cable.
23. The system of claim 19 wherein said attachments comprise electrical, electronic, acoustic, or fiber optic instruments or materials.
24. A method for retrieving cable from water in marine operations employing a floating vessel, while monitoring and adjusting the pulling forces on said cable during said retrieval to reduce damage to said cable from said forces during said retrieval, said method comprising pulling said cable with a pulling device that distributes pulling forces and stresses among all of the cable components, and that employs a see-saw action for adjusting said pulling forces to maintain said forces below the damage point for said cable; and depositing cable in a storage area on said vessel, said storage area comprising a cylindrical cage having at least two vertical slots and a central interior cylinder having a conical top and separated from an exterior cylindrical cage wall by a raceway area for the cable, and a conical cap with a protruding arm rotatably mounted on the conical top for receiving and directing cable into the raceway area.
25. The method of claim 24 further comprising delivering the cable from said pullingdevice to said storage area using a powered drum.
26. The method of claim 24 wherein the cable comprises at least one attachment of marine equipment, said method further comprising causing said attachment to fall outside said raceway area while the cable attaching said attachment is directed through said vertical slot into the raceway area.
27. The method of claim 24 wherein said pulling device comprises a pulling drum and a front-mounted damper arm having an adjustable tension range at the entry point of the cable on the vessel, and said method further comprises adjusting said damper arm so as to keep tension constant on the cable during pulling.
28. An apparatus for retrieving and deploying cable in marine operations, said apparatus comprising:
(a) pulley drum assembly comprising a pulling drum capable of pulling the cable while distributing pulling forces across all components of the cable;
(b) powered drive motor with regulatable torque drive for operating the pulling drum and adjusting the forces such pulling exerts on the cable;
(c) front-mounted damper arm with an adjustable tension range positioned prior to the drum pulley assembly to dampen stress on the cable caused by movement of water;
(d) storage system for said cable, said storage system comprising a cylindrical case having a smaller diameter cylinder about its central point and a raceway path in-between the smaller diameter cylinder and the interior wall of the outer-part of the cylindrical cage, wherein said smaller diameter cylinder has a conical top capped with a rotatably mounted cone; and
(e) means for delivering cable from the pulley drum assembly to the storage system.
29. The apparatus of claim 28 wherein said tension exerted by said damper arm on said cable is reduced by lowering said damper arm toward the cable.
30. The apparatus of claim 28 wherein said powered drive motor comprises a hydraulic torque conversion system that slips or stalls at a selectable force value and that allows payback beyond said selectable force value, simulating a see saw action between the apparatus and the cable.
31. The apparatus of claim 28 further comprising at least one slit in said exterior wall.
32. A method for deploying cable employing the apparatus of claim 28 , wherein said means for delivering the cable to the storage system is a powered drum, said method comprising deploying said cable using said powered drum and the cable's own weight.