Page 62 - Wire Rope News & Sling Technology - December 2019
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         continued from previous page

                                                              Figure  9: Schematic view of an  electrically driven winch  device
                                                              according to second  embodiment.
         Figure 6: Schematic side view of a mobile crane having an electrically
         driven winch device.                                 the mobile crane 9. That is, the winch drum 2 is mounted
                                                              on the slewing frame 93 in a manner such that the vehicle
         part 22 disposed on both ends of the drum part 21. The winch   width direction and the drum axis coincide with each other.
         drum 2 rotates around a drum axis which is the cylinder cen-  The wire rope W is drawn out from the drum part 21, ex-
         ter of the drum part 21, in order to wind or unwind the wire   tracted through a tip of the boom 94, and hung down from
         rope W. It is to be noted that the winch drum 2 and the wire   the tip of the boom 94 so that the hooking device 95 is hung
         rope  W are represented as a cross section along the drum   therefrom. The winch drum 2 rotates in a winding-up direc-
         axis direction in figures 7 and 9, in order to show the internal   tion which is one rotation direction around the drum axis,
         structure of the winch drum 2.                       so as to wind the wire rope W around the drum part 21 and
           An  unillustrated  shaft  part along  the  drum  axis  is  pro-
                                                              therefore  wind  up  the  hooking  device  95  (the  object  97).
                                                              Moreover, the winch drum 2 rotates in a winding-down di-
                                                              rection which is a rotation direction opposite to the winding-
                                                              up direction, so as to unwind the wire rope W and therefore
                                                              wind down the object 97.
                                                               The driving source 3 is configured to drive the winch drum
                                                              2 to rotate and includes the first electric motor 3A and the
                                                              second electric motor 3B which are a plurality of axial-gap
                                                              electric motors serially connected with each other. Although
                                                              an example in which two electric motors 3A, 3B are connect-
                                                              ed with each other are illustrated here, the driving source
                                                              3 may be constructed by connecting  approximately  three
                                                              to  ten axial-gap electric motors with each other. The first
                                                              electric motor 3A and the second electric motor 3B operate
         Figure 7: Schematic view of the electrically driven winch device.
                                                              when being supplied with electric power, and output torque
                                                              for rotating the winch drum 2 in a winding-up direction at
         jected from both ends of the winch drum 2. A pair of shaft   the time of winding up the object 97. Both of the first and
         support parts (unillustrated)  for  rotatably supporting  the   second electric motors 3A, 3B are disposed on one side in
         shaft part of the winch drum 2 are provided on the slewing   the drum axis direction of the winch drum 2 as illustrated
         frame 93. The pair of shaft support parts are disposed at a   in figures 7 and 9.
         distance from each other in a width direction of the slewing
         frame 93 or, in other words, in a vehicle width direction of   Synthetic rope termination
                                                              Pat. 10,422,411 U.S. class 1/1 Int. class F16G 11/12
                                                              Inventor: Peter VerBrugge, Tulsa, OK.
                                                              Assignee: The Crosby Group LLC., Tulsa, OK.
                                                               This patent presents a rope termination device. The device
                                                              includes a cylindrical body having a first opening in a first
                                                              axial end of the body. A second opening in an opposed, sec-
                                                              ond end of the body is connected by a passageway through
                                                              the body to the first opening. At least one circular channel
                                                              is in communication with the second opening. A continuous
                                                              helical groove is provided around a circumference of the cy-
                                                              lindrical body. An attachment connector is provided near the
                                                              second end of the body.
                                                               Referring to the drawings in detail, figure 10 illustrates
                                                              a perspective view of a first preferred embodiment of a rope
                                                              termination device  10 constructed in  accordance  with the
                                                              present invention. Figure 11 illustrates the device 10 shown
                                                              in figure 10 with a rope or cord 12 fully installed or rigged
                                                              on the termination device  10. Figure 12 illustrates a side
         Figure 8: Schematic perspective view of the electrically driven winch device.  view of the termination device 10 shown in figure 10 before

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