Page 67 - Wire Rope News & Sling Technology - August 2019
P. 67

                                                              tor are sent through the same link.
                                                               With increasing extension or depth of the load cables 4a,
                                                              4b, and possibly based on sea conditions both above the sur-
                                                              face of the sea 8, (such as the heave of the vessel 6) and in
                                                              the sea 8, the possible or expected locations or areas of the
                                                              risk  of  cabling  may  be  known  or  identifiable  or  otherwise
                                                              predicable. Additionally or alternatively, monitoring of the
                                                              status  of  the  tension  and/or  torsion  of  the  load  cables  4a,
                                                              4b, through the load cell 14, auxiliary measuring devices, or
                                                              one or more other monitors, including visual monitors from
                                                              for example ROVs, can indicate locations or areas of risk of
                                                              cabling during the operation of the lifting system. Thus, it is
                                                              possible for the user or operator of the subsea lifting system
                                                              to activate the anti-cabling device 20 when the onset of ca-
                                                              bling is identified and monitor the effect of the anti-cabling
                                                              device 20 in reducing the possibility of cabling occurring.
         Figure 14:  Exploded  view  of some of the  components of the  anti-
         cabling device.                                      System, apparatus and methods for cord storage reel
         from the torque sensor 22.                           Pat. 10,301,148 U.S. class B65H 75/40 Int. class B65H 75/40
           A processor 34 is provided which is adapted to process the   Inventor: Clayton Buck, Moorseville, NC.
         measured tension and torque characteristics  of each  load-  Assignee: Clayton Buck, Moorseville, NC.
         cable 4a, 4b. The tension and torque characteristics of each   This patent presents a cord reel apparatus for holding and
         load-cable  4a,  4b may  be determined via the load cell  14   winding cords includes a housing, a spool and a handle. The
         and/or  at  least  one  auxiliary  measuring  device  configured   housing and spool further have three outlets to conveniently
         to measure the tension and torque characteristics  of each   access the two plugging ends of the cord. The handle extends
         load-cable 4a, 4b. The auxiliary measuring device(s) may be   from exterior of housing and a crank handle internally con-
         in the form of a second load cell arrangement, accelerometer   nected to spool helps in faster and smoother winding and un-
         and or gyroscope.                                    winding of the cords. Also the cord reel apparatus includes a
           In the embodiment shown, the system comprises an aux-  gear system (outer, central and inner gears) to help in faster
         iliary measuring device in the form of a gyroscope 36. The   winding and unwinding of cords. There are different types of
         gyroscope 36 is configured to continuously feed heading and/  cord and hose management systems. For the purpose of this
         or orientation data to the processor 34. The processor 34 is   application, the term “cord” may refer to a cord, hose, wire
         operably linked to the controller 30 and torque sensor 22, and   rope, fishing line, or other similar type of material.
         the amount of rotational force imparted by the motor(s) will   Figure 15 shows the cord reel system 100. The cord reel
         be determined by the controller 30 based on feedback/infor-  system 100 is mounted on the work bucket 130 via the cord
         mation received from the processor 34. The components of the   reel  housings  compressible  flange  120.  The  compressible
         anti-cabling device 20 associated with a load cable 4a, 4b, i.e.   flange 120 is fabricated from a rigid material so that a rigid
         processors 34, controller 30, auxiliary measuring device etc.,   radial perimeter compressibly expands out the inner pliable
         are in communication with the components associated with   edge of the work bucket 130. The openings on the top, bot-
         another load cable 4a, 4b. The connection between the com-  tom and side of the spool 250 and housing allow one cord end
         ponents may be a wireless connection or a wired connection.  to remain exposed on either side of the reel while the other
           The  anti-cabling  device  20  comprises  a connector in  the   end is wound or unwound. It also allows the user to plug
         form of a pair of base plates  40 depending  from the base   into items inside or outside of the bucket while the reel is on
         thereof to facilitate the connection of the load 10 to the anti-  top of it. The reel does not have to be opened in order to load
         cabling device 20. The lifting system may be configured such                          continued on next page
         that the anti-cabling device 20 is self-controlled or automat-
         ed by incorporating a software run by the processor 34 which
         determines the permitted tension and/or torsion tolerances
         experienced by the load cables 4a, 4b and when the control-
         ler 30 can activate/deactivate the motor(s).
           Alternatively or  in  addition, the  anti-cabling device  20
         may be driven by direct control or wireless control. In such
         an arrangement where the anti-cabling device 20 is driven
         by direct control or wireless control, the anti-cabling device
         20 may be driven from a surface vessel, a remotely operated
         underwater vehicle or subsea communication device.
           In such an arrangement, information about the subsea
         lifting system can be provided to a control or monitor via
         one or more video links, such as from one or more ROVs
         (not shown), to assist with the activation of the anti-ca-
         bling device 20 in response to excessive torsion being ex-
         perience by one or more of the load cables 4a, 4b. Data
         from the processor 34 will be transmitted to the control
         or monitor via a suitable link, for example a wireless link.
         The link is preferably a two way link such that any com-
         mands sent to the processor 34 from the control or moni-  Figure 15: Isometric view of the cord storage reel apparatus.

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