Page 62 - Wire Rope News & Sling Technology - February 2019
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INVENTOR’S CORNER
         continued from previous page                         specific type of the speed regulating unit is not limited in
         the  friction  force  with  the  first  groove.  It  should  be  noted   the embodiment of the invention. When the speed regulating
         that, in the embodiment of the invention, the synchronous   unit is a manually-controlled brake such as a manual brake,
         rotation of the first turning wheel 8 with the rope 3 refers to   etc., the first control unit of the rope winder according to the
         that the distance the rope 3 moves in the unit time equals   embodiment of the invention will be a manual brake operat-
         to the distance swept over by the wheel rim corresponding   ing handle.
         to the rotation angle of the first turning wheel 8 in the unit   Referring again to figure 4, in a preferred solution of the
         time, that is, no relative movement exists between the first   embodiment  of the invention, the number of the manual
         groove and the rope 3.                               brakes is two, that is, the first manual brake 13 and the sec-
           The electronic counter 10 is connected with the first turn-  ond manual brake 17 respectively, wherein the first manual
         ing wheel 8, for obtaining the number of revolutions of the   brake 13 and the second manual brake 17 are respectively
         first turning wheel 8. The calculating unit is connected with   set on the two ends of the winding drum 2. Correspondingly,
         the electronic counter 10, for calculating the release distance   the number of the manual brake operating handles is also
         and release speed of the rope 3 according to the number of   two, that is, the first manual brake operating handle 12 and
         revolutions of the first turning wheel 8. It is known that,   the second manual brake operating handle 18 respectively.
         the perimeter of the wheel rim of the first turning wheel 8 is   The setting of two manual brakes can attain the object of
         definite, thus the distance swept over by the wheel rim of the   balanced braking. More preferably, the central axis of the
         first turning wheel 8 in a set time range, that is, the release   rack 1, the central axis of the winding drum 2 and the chain
         distance or lifting distance of the rope 3, may be calculated   wheel center at the end of the winding drum 2 are collinear.
         according to the number of revolutions of the first turning   By such an arrangement, the volume of the whole rope wind-
                                                              er can be reduced, and the structure will be more compact.
                                                               The operation of the rope winder according to the embodi-
                                                              ment of the invention is as follows: the winding drum 2 of
                                                              the rope winder releases the rope 3, the first turning wheel
                                                              8 rotates as the rope 3 moves, the calculating unit calculates
                                                              the release distance and the release speed of the rope 3 ac-
                                                              cording to the count of the electronic counter 10, the first
                                                              control unit controls the speed regulating unit to regulate
                                                              the release speed of the rope 3 to a preset safe speed when
                                                              the release distance is greater than or equal to a set safe dis-
                                                              tance so that the salvaging head or the hoisting head driven
                                                              by the rope 3 can be made to approach the target position
                                                              at a preset safe speed. It should be noted that, the set safe
                                                              distance and the preset safe speed are both empirical values
                                                              obtained by one skilled in the art. Wherein, the set safe dis-
                                                              tance refers to a release length that is required to be adapt-
                                                              able to change the speed to a preset safe speed, and when it
                                                              is released to the set safe distance, the release speed has a
                                                              reliable regulation space. The preset safe speed refers to a
                                                              release speed that can avoid impact and damage.

                                                              Wire, rope and cable management
         Figure 4: Stereoscopic structural representation of a rope winder.  Pat. 10,099,895 U.S. class B66B 7/06 Int. class B66B 7/06
                                                              Inventor: Dirk Miseur, Wolvertem, BE., Nicolas Van Der Lin-
         wheel 8 in the set time range. Of course, the release speed or   den, Antwerpen, BE.
         lifting speed of the rope 3 in the set time range may also be   Assignee: Safeworks, LLC., Tukwila, WA.
         calculated. During the salvaging or hoisting of a petroleum   This patent presents an elevator cable management sys-
         instrument, impact and damage tend to occur when the rope   tem to provide constraints on cable movements at a point
         3 is released. Therefore, the calculating unit may only cal-  between the top and bottom of an elevator track. The system
         culate the release distance and release speed of the rope 3.  may include a moving retainer bar with a cradle on top of
           Referring again to figures 1, 3 and 4, the rope winder ac-  an elevator car, and a fixed retainer bar that retains cables
         cording to the embodiment of the invention further includes   when the elevator car is above the fixed retainer bar.
         a displaying and operating platform 5. The displaying and   Figure 5 is a perspective view of a portion of an elevator
         operating platform 5 is used for displaying the calculation   system. An elevator car 102 or cab moves vertically along a
         result of the calculating unit and other parameters (for ex-  track (not depicted) between stations or stops along the track
         ample, the result of the electronic counter 10), which is con-  where humans or other cargo may be added or removed to
         venient for an operator to monitor and operate.      the car 102. Platform 104 is such a stop somewhere midway
           The speed regulating unit is used for regulating the rotat-  along the elevator track. Gate 106 may protect the elevator
         ing speed of the winding drum 2 and thus regulating the re-  shaft and prevent injury or other accidents when the car 102
         lease speed of the rope 3. The first control unit is connected   is not at the platform 104 or when the car 102 is moving
         with the calculating unit and the speed regulating unit, for   near the platform 104. A cable management system may in-
         controlling the speed regulating unit to regulate the release   clude a moving bar 110 and a fixed bar 112 to provide physi-
         speed to  a preset safe  speed when  the  release  distance  of   cal constraints cable movement. Cables 120 and  122 may
         the rope 3 is greater than or equal to a set safe distance. In   move as the elevator car 102 moves through the shaft and
         the embodiment of the invention, the speed regulating unit   along the track. In the embodiment of figure 5, cables 120
         may be a manual brake or a hydraulic brake, etc., and the   are traction cables that provide the force to lift and move the

         62     Wire Rope News & Sling Technology   February 2019
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