Page 63 - Wire Rope News & Sling Technology - February 2020
P. 63

INVENTOR’S CORNER


                                     Adolf Bleichert &
                                     Co. celebrated its
                                     50th Anniversary in
                                     1924. By the time
                                     of this occasion,
                                     the company
                                     had constructed
                                     3,000 miles of
                                     wire ropeways at
                                     landmark points
                                     around the globe, and
                                     designed and built
                                     the world’s record-
                                     holding systems:
                                     Longest and highest
              elevation (Argentina); Length of system over water
              (New Caledonia); Steepest (Tanzania); Highest
              capacity (France); Northernmost (Norway); and,
              Southernmost (Chile).
              Adolf Bleichert & Co.’s Wire Rope Systems:
              Written by the great-great grandson of the
              company’s founder, this book includes over 100
              pictures and detailed engineering drawings that
              explore the legendary company’s history.
                    Available at Amazon.
                    com for your Kindle or in   ‘Like’ it on
                    paperback.               Facebook.




         In the crane of figure 5, the boom 22 connects to the suspen-  60 has a boom hoist line reeved between the fixed mast 60
         sion assembly 36 through multiple pendants 38 at different   and an equalizer 66 coupled to the suspension assembly 62
         locations on the boom 22.                            configured to adjust the distance between the fixed mast 60
           Figure 6 illustrates the mobile lift crane of figure 5 having   and the hoist end of the boom 22 thereby adjusting the boom
         a fixed mast 60 in place of the live mast 28. The fixed mast   angle. The suspension assembly 62 is made up of the boom
         60 is connected to the boom 22 through suspension assembly   strap sections.
         62. The suspensions assembly 62 is connected to the boom   Figure 7 illustrates a detailed view of the first and sec-
         22 at the hoist end near the top of the boom and at an in-  ond strap segments of first strap assembly connected to the
         termediate location through a pendant 64. The fixed mast   three-way connector 367. The first end of each strap segment
                                                              has an aperture sized and shaped to receive a pin. The three-
                                                              way connector 367 has a thickness that is similar to a thick-
                                                              ness of the strap segments. Three apertures are disposed in
                                                              the three-way connector 367 with each aperture sized and
                                                              shaped to receive a pin. A pair of connector plates 368, 370
                                                              is disposed about the first end of a strap segment with an
                                                              aperture 372 of the connector plates 368, 370 aligning with
                                                              the aperture of the strap segment. A pin (not shown) is in-
                                                              serted through the aperture 372 of the connector plates 368,
                                                              370 and the aperture of the first end of the strap segment,
                                                              coupling the strap segment to the connector plates 368, 370.
                                                              The connector plates 368, 370 are positioned on each side of
                                                              the three-way connector 367 with a second aperture 374 of
                                                              the connector plates aligned with an aperture of the three-
                                                              way connector 367. A pin (not shown) is inserted through the
                                                              aperture 374 of the connector plates 368, 370 and through
                                                              the aperture of the three-way connector 367, coupling the
                                                              connector plates 368, 370 to the three-way connector 367.
                                                              The process is repeated for the remaining strap segment
                                                              364 such that two strap segments are coupled to the three-
                                                              way connector 367. With the strap segments coupled to the
         Figure 9: Illustrates a detailed perspective view of the bottom end of   three-way connector 367, the strap assembly is ready to be
         the pendant being connected to the boom insert.                                       continued on next page

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