Load displacement apparatus

B - Operations – Transporting – 66 – F

Patent

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Details

B66F 7/14 (2006.01) B66F 7/28 (2006.01) E04G 1/00 (2006.01) E04G 1/24 (2006.01) F16H 25/22 (2006.01) F16H 25/24 (2006.01)

Patent

CA 2584514

A load displacement apparatus (10) to displace a mobile platform (20) along a structure (22) includes a worm screw (24) mounted on the platform (20) for rotation about its axis (26) that meshes with a plurality of support blocs (28) mounted on the structure (22). The support blocs (28) are spaced apart from one another along the structure (22) to be successively engaged by the worm screw (24). Each support bloc (28) includes at least one bearing ball (34) freely movably supported therein to selectively and movably engage the worm screw (24) over at least an arc segment (33) thereof such that the worm screw (24) is always in meshing engagement with at least one of the support blocs (28). The invention also refers to a scaffolding system (12) incorporating the apparatus (10).

L'invention concerne un appareil de déplacement de charges (10) destiné à déplacer une plate-forme mobile (20) le long d'une structure (22); il comprend une vis sans fin (24) montée sur la plate-forme (20) de manière à effectuer des rotations autour de son axe (26), qui s'engrène avec une pluralité de blocs de support (28) montés sur la structure (22). Les blocs de support (28) sont espacés entre eux le long de la structure (22) pour être mis en prise, l'un après l'autre, par la vis sans fin (24). Chaque bloc de support (28) comprend au moins une bille de roulement (34) montée de manière à pouvoir se déplacer librement dans ledit bloc de support pour pouvoir mettre en prise, de manière sélective et mobile, la vis sans fin (24) sur au moins un segment d'arc de celle-ci (33), de façon que la vis sans fin (24) s'engrène constamment avec au moins un bloc de support (28). L'invention concerne aussi un système d'échafaudages (12) comprenant l'appareil (10).

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