Page 62 - Wire Rope News & Sling Technology - June 2019
P. 62

INVENTOR’S CORNER
         continued from previous page
         ed) and an automatic  control of the rotating means, pref-
         erably thus an automatic control of the electric motor. The
         aforementioned hoisting machine M is arranged to act on
         the traction roping 6 such that it can pull the part of the rop-
         ing on the first side of the hoisting machine (of the traction
         means 5 of it) or the part of the roping on the second side of
         the hoisting machine (of the traction means 5 of it), depend-
         ing on the direction of rotation of the traction means, which
         direction can be selected to be that desired by the action of
         the control of the rotating means. The hoisting machine M
         is preferably arranged to exert via the traction roping 6 a
         downward pulling force on the elevator car 1 or on the coun-  Figure 6: Alternative  placement for the  hoisting machine of the
         terweight 2. The hoisting machine M is preferably disposed   elevator.
         in the proximity of the bottom end of the path of movement
         of the elevator car 1, as presented in the figures. The trac-  ing of the supporting platform  3, the supporting platform
         tion roping 6 is connected both to the elevator car 1 and to   3 is arranged to be supported in its position in the elevator
         the counterweight 2. It is suspended to hang from the el-  hoistway S by locking it in the vertical direction to be sup-
         evator car 1 and from the counterweight 2, in which case a   ported by the guide rails G. Alternatively the means t can
         downward pull is simple to implement.                support the supporting platform 3 in its position in a sup-
           The supporting platform 3 comprises the aforementioned   porting state resting (in the vertical direction) on some other
         means t for vertically supporting the supporting platform   structure installed in the elevator hoistway or an a structure
         3 in its position in the elevator hoistway  S. In the state   of the elevator hoistway itself. In the aforementioned state
         supporting the supporting platform  3 in its position, they   not supporting it in position the means t do not hamper the
         rest (in the vertical direction) preferably supported by the   vertical transfer of the supporting platform in the hoistway.
         guide rails G comprised in the elevator. Thus after the lift-  The means t can be grippers to be manually tightened to
                                                              the guide rails, or they can be means movable between an
                                                              extended and retracted position in the lateral direction, as
                                                              are known in the art.
                                                               The traction roping 6 and the suspension roping 4 each
                                                              comprise one or more ropes, which continues(s) via an open-
                                                              able clamp/openable clamps c to the rope supply storage 13,
                                                              which rope supply storage 13 comprises at least one rope,














                                                              Figure 7: Preferred structure for the rope of the suspension roping
                                                              and/or of the traction roping.

                                                              preferably a plurality of ropes, belonging to the roping in
                                                              question of the length required for the lifting (a jump-lift) of
                                                              the supporting platform 3.
                                                               The suspension roping 4 is preferably connected to the ele-
                                                              vator car 1 and to the counterweight 2 with a 1:1 suspension
                                                              ratio. In this way the suspension roping and the supporting
                                                              platform can be formed to be very simple. The rope supply
                                                              storage 13 can be in connection with the elevator car, where
                                                              it is easily accessible. One end of the roping 4 continues via
                                                              the rope clamp c to the rope supply storage 13 of the elevator
                                                              car, and the other end of the roping 4 is fixed to the coun-
                                                              terweight 2. The traction roping 6 is preferably connected
                                                              to the elevator car 1 and to the counterweight 2 with a 2:1
                                                              suspension ratio. In this way the rope supply storage 13 of
                                                              the traction roping 6 can be easily disposed in a suitable lo-
                                                              cation and roping can be fed into the system simply while
         Figure 5: Diagrammatically presents an elevator arrangement, when   working in the area of the bottom end of the hoistway S. One
         the  elevator car is removed  from the  aforementioned  use and the   end of the roping 6 continues via the rope clamp c to the rope
         supporting platform supporting it  is lifted  higher in the  elevator
         hoistway.                                            supply storage 13 and the other end is fixed to the building,

         62     Wire Rope News & Sling Technology   June 2019
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