Page 64 - Wire Rope News & Sling Technology - August 2019
P. 64

INVENTOR’S CORNER
         continued from previous page                         one end of the first threaded rod 27 is fixedly connected to the
                                                              first tensioning sliding block 25, the first threaded rod 27 is
                                                              rotated to drive the first tensioning sliding block 25 to move
                                                              along the rail, to tension the steel wire rope hooked on the
                                                              third hook 34B and the fourth hook 34D, and the first side
                                                              plate 39 and the second side plate 39B slide up and down on
                                                              the bare shaft sliding rails 37, so that a curvature of the steel
                                                              wire rope pressed on the reel can be adjusted, and friction
                                                              performance related to layer-to-layer transition of the steel
                                                              wire rope in a curved state can be detected.
                                                               The steel wire rope loading assembly is used to exert a
                                                              pressure in a vertical direction to a to-be-measured  steel
                                                              wire rope, and includes a press plate 31 and a middle plate
         Figure 8: Schematic top view of the detection device.  30; four identical sliding blocks 9 are mounted on an exter-
         support for the tensioning sliding block 25B. One side of the   nal side of the press plate 31, the sliding blocks 9 are sleeved
         tensioning sliding block 25B is fixedly connected to the second
         threaded rod 38, an internal thread matching the threaded
         rod 38 is disposed on the support device 36, and when the
         second threaded rod 38 is rotated to drive the tensioning slid-
         ing block 25B to slide on the guide rail of the support device
         36. The other side of the tensioning sliding block 25B is con-
         nected to the tension and compression sensor 35. The first
         hook 34A is disposed on the tension and compression sensor
         35, and the first hook 34A is used to retain one end of the
         steel wire rope 32. The second hook 34C is fixed to the other
         end (right end) of the steel wire rope tensioning plate 29, and
         retains the other end of the steel wire rope 32. The other end
         of the steel wire rope tensioning plate 29 is connected to the
         second middle-side plate 41B via the static torque sensor 28.
         The tension and compression sensor 35 can measure, in real   Figure 10: Schematic side view of an embodiment of a first tensioning
         time, tension and compression force acting on the steel wire   sliding block, a guide device, and a side plate of a curvilinear
         rope. The static torque sensor 28 measures, in real time, stat-  tensioning assembly.
         ic torque acting on the steel wire rope.
           The curvilinear tensioning assembly includes bare shaft   on four identical vertical bare shaft guide rails 4, so that the
         sliding rails 37, fixable sliding blocks 40, a first side plate 39,   press plate 31 can slide up and down freely within a range
         a second side plate 39B, a third hook 34B, a fourth hook 34D,   along the vertical bare shaft guide rail 4; a middle part of the
         a guide device 26, a first tensioning sliding block 25, and a   press plate 31 is connected to the middle plate 30 via a bolt,
         first threaded rod 27; there are four bare shaft sliding rails   two symmetric arc-shaped slots 21 are formed on the press
                                                              plate  31,  and the  press plate  31  and the middle plate  30
                                                              are connected by using the two arc-shaped slots 21; and the
                                                              middle plate 30 can rotate horizontally relative to the press
                                                              plate 31 by a particular angle, to implement different-angle
                                                              friction between the steel wire rope hooked on the hooks and
                                                              the steel wire rope on the reel.
                                                              Multi-cable subsea lifting system
                                                              Pat. 10,294,088 U.S. class B66C 13/02 Int. class B66D 1/52
                                                              Inventor: David Cannell, Insch Aberdeenshire, GB., Ramesh
                                                              Babu Kante, Westhill Aberdeenshire, GB., David Fraser, Ab-
         Figure 9: Schematic top view of an embodiment of a first tensioning   erdeen Aberdeenshire, GB.
         sliding block, a guide device, and a side plate of a curvilinear   Assignee: TECHNIP FRANCE, Courbevoie, FR.
         tensioning assembly.
                                                               A multi-cable subsea lifting system including two or more
         37, which are provided as two groups each with two bare shaft   load-cable lifting  apparatus; a load cable extending from
         sliding rails and respectively fixed to a first middle-side plate   each  load-cable  lifting  apparatus  to  a  subsea  attachment
         41 and a second middle-side plate 41B of a middle plate 30,   point; a torque measuring device associated with each load
         the first side plate 39 and the second side plate 39B are re-  cable; one  or  more subsea anti-cabling devices,  each  anti-
         spectively sleeved on the bare shaft sliding rails 37 via two   cabling device including a motor connected to a respective
         fixable sliding blocks 40, and the first side plate 39 and the   load cable; and a controller in communication with each mo-
         second side plate 39B may slide up and down along the bare   tor and torque measuring device; wherein the controller is
         shaft sliding rails 37 as a whole, and are fixed via the fixable   configured to actuate each motor to impart a rotational force
         sliding blocks 40; the guide device 26 is fixed to the second   to its respective load cable in response to measurements
         side plate 39B, a rail is disposed inside the guide device 26,   obtained from the torque measuring device with the aim to
         and a groove on the first tensioning sliding block 25 match-  limit cabling, remove cabling or control heading either auto-
         es with the rail, so that the first tensioning sliding block 25   matically or from external control.
         can slide along the guide device 26; the first threaded rod 27   Referring  to  figure  11,  a  multi-cable  subsea  lifting  sys-
         matches with a threaded hole on the second side plate 39B,   tem in accordance with the invention is shown. The lifting

         64     Wire Rope News & Sling Technology   August 2019
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