Apparatus and method for lifting aerial cables

B - Operations – Transporting – 66 – F

Patent

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Details

B66F 3/28 (2006.01) B25J 1/04 (2006.01) B66F 11/00 (2006.01) H02G 1/02 (2006.01) H02G 7/00 (2006.01)

Patent

CA 2477123

A portable telescopic lifting apparatus (1) for lifting aerial cables (53). The apparatus (1) comprises a tubular housing (2), first and second telescopic members (3, 4) extendible from and retractable into the housing (2), a drive (5, 60) for extending and retracting the telescopic members (3, 4), and a cable-engaging member (51) attached to the second telescopic member (4) for lifting one or more aerial cables (53). The drive (5, 60) comprises a chain lever block (5) and a pulley arrangement (60). In use, the apparatus (1) is positioned below one or more aerial cables (53), the chain lever block (5) is used to raise the first telescopic member (3), the first telescopic member (3) extends from within the housing (2), the second telescopic member (4) extends from within the first telescopic member (3), and cable-engaging member (51) raises the cable/s (53).

L'invention concerne un appareil de levage télescopique portable (1) servant à hisser des câbles aériens (53). L'appareil (1) comprend un logement tubulaire (2), un premier et un second élément télescopique (3, 4) pouvant s'étendre à partir du logement (2) et se rétracter dans celui-ci, un élément (5, 60) de commande d'extension et d'escamotage des éléments télescopiques (3, 4), et un élément (51) de contact avec le câble fixé au second élément télescopique (4) pour hisser un ou plusieurs câbles aériens (53). L'élément (5, 60) de commande comprend un bloc (5) de levier à chaîne et un mécanisme (60) de poulie. Lors de son utilisation, l'appareil (1) est positionné en dessous d'un ou de plusieurs câbles aériens (53), le bloc (5) de levier à chaîne est utilisé pour hisser le premier élément télescopique (3), le premier élément télescopique (3) s'étend de l'intérieur du logement (2), le second élément télescopique (4) s'étend de l'intérieur du premier élément télescopique (3), et un élément (51) de contact avec le câble hisse le(s) câble(s) (53).

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