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         linear. Because a gas cylinder does not have linear force vs.
         displacement, it is much more difficult for the manufacturer
         to create an inline device with ratings that conform to the API
         2C standard, because the standard only accounts for linear
         (spring-like) behavior in the official formula for Cv. Cv=1+Vr
         Sqrt[k/g/SWLH]-k is the effective composite vertical stiffness
         of everything between the payload and the earth. The stan-
         dard has no concept of the non-linear response of the gas-cyl-
         inder type devices.
         Guide rail rope deflection inhibition mechanism and
         method for parallel soft cable suspension system
         Pat. 9,689,257  U.S. class B66B 17/00  Int. class B66B 17/00
         Inventor: Guohua Cao, Jiangsu, CN., Jinjie Wang, Jiangsu,   Figure 19: Schematic structural diagram of the connection between
         CN.,  Zhencai  Zhu,  Jiangsu,  CN.,  Weihong  Peng,  Jiangsu,   the rotary frame and the chucks.
         CN.,  Yangdong  Wang,  Jiangsu,  CN.,  Lei  Zhang,  Jiangsu,   porting rod; a third end of the upper Y-shaped bracket 2-1
         CN., Gang Shen, Jiangsu, CN., Shanzeng Liu, Jiangsu, CN.
         Assignee: CHINA UNIVERSITY OF MINING AND TECH-       and a third end of the lower Y-shaped bracket 2-2 are pro-
         NOLOG0Y, Jiangsu, CN.                                vided with a hollow steel part 2-3 respectively, the hollow
                                                              steel part 2-3 has a bolt hole 2-5, and a fastening bolt 2-4 is
           As shown in figures 18 and 19, the guide rail rope deflec-  arranged in the bolt hole 2-5.
         tion inhibiting mechanism for a parallel flexible cable sus-  The chuck 4 comprises an upper chuck 4-1 and a lower
         pension system according to the present invention comprises   chuck 4-2, and both the upper chuck 4-1 and the lower chuck
         a T-shaped mounting support 1, a rotary frame 2, a hydrau-  4-2 comprise a a V-shaped chuck 4-3 and a round steel part
         lic supporting rod 3 and a chuck 4. The T-shaped mount-  4-4, the V-shaped chuck 4-3 is arranged with a snap groove
         ing support 1 comprises a longitudinal supporting rod and a   that can embrace the guide rail rope 5, one end of the round
         transverse supporting rod, the longitudinal supporting rod   steel part 4-4 is fixed to the V-shaped chuck 4-3, and the
         is fixed on the shaft wall 8, and one end of the transverse   other end of the round steel part 4-4 extends into the tube of
         supporting rod is fixed to the center of the longitudinal sup-  the hollow steel part 2-3 and is fixed by a fastening bolt 2-4,
         porting rod. The hydraulic supporting rod  3 comprises an   and thereby the upper chuck 4-1 and lower chuck 4-2 are
         upper hydraulic supporting rod 3-1 and a lower hydraulic   fixed to the third end of the upper Y-shaped bracket 2-1 and
         supporting rod 3-2, one end of the upper hydraulic support-  the third end of the lower Y-shaped bracket 2-2 respectively,
         ing rod 3-1 is hinged to the upper end (end A in the figures)   so that the rotary frame 2 and the chuck 4 are connected
         of the longitudinal supporting rod, and one end of the lower
                                                              together. During use, the length of the round steel part 4-4
                                                              extending into the hollow steel tube 2-3 can be adjusted to
                                                              regulate the extension length of the upper chuck 4-1 and the
                                                              lower chuck 4-2, so as to secure the guide rail rope 5.
                                                               As  shown  in  figure  20,  when  the  rotary  frame  2  rotates
                                                              around the other end of the transverse supporting rod to a
                                                              position where the lower chuck 4-2 is in a horizontal state,
                                                              the upper chuck  4-1 will be in an up-tilting state. At this
                                                              point, both the upper hydraulic supporting rod 3-1 and the
                                                              lower hydraulic supporting rod 3-2 are in maximum exten-
                                                              sion state; in addition, since the hydraulic supporting rod 3
                                                              provides persistent and steady pushing force, the moment of
                                                              resistance to the other end of the transverse supporting rod of
                                                              the T-shaped mounting support 1 is negative (here, the mo-



         Figure 18: Schematic structural diagram of the guide rail rope deflection
         inhibiting mechanism for a parallel flexible cable suspension system.

         hydraulic supporting rod 3-2 is hinged to the lower end (end
         B in the figures) of the longitudinal supporting rod.
           The rotary frame 2 comprises an upper Y-shaped bracket
         2-1  and  a  lower  Y-shaped bracket  2-2,  and  the  upper  Y-
         shaped bracket 2-1 and lower Y-shaped bracket 2-2 are in
         the same structure. One end (end C in the figures) of the
         upper Y-shaped bracket  2-1 is hinged to the other end of
         the upper hydraulic supporting rod 3-1, one end (end D in
         the figures) of the lower Y-shaped bracket 2-2 is hinged to
         the other end of the lower hydraulic supporting rod 3-2, the
         other end of the upper Y-shaped bracket 2-1 is fixed to the   Figure 20: Schematic diagram illustrating a state in which the moment
         other end of the lower Y-shaped bracket 2-2 and hinged to   of resistance is negative during  the movement of the deflection
         the other end (end E in the figures) of the transverse sup-  inhibiting mechanism.

         66     Wire Rope News & Sling Technology   August 2017
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