B - Operations – Transporting – 66 – B
Patent
B - Operations, Transporting
66
B
187/11
B66B 11/04 (2006.01) B66B 9/02 (2006.01) F16H 25/24 (2006.01)
Patent
CA 2005666
In a screw lift the lift cage (4) is carried by a drive nut (10) rotatably provided on an essentially upright screw (2), the lift cage carrying a bearing means (8) and a drive means (6) for the nut. The screw (2) is supported by several supporting braces (14) attached thereto along the length thereof. The nut (10) has the shape of a spiral having turns, the pitch and axial thickness (a) of which are adapted to the distance (b) between the braces (14) and the dimension (c) of these in the length direction of the screw so as to enable the nut to pass freely past the braces by these passing between the turns of the nut during the passage.
Dans un mécanisme de levage à vis, la cage de levage (4) est portée par un écrou d'entraînement (10) tournant sur une vis essentiellement verticale (2), la cage de levage porte un mécanisme porteur (8) et un mécanisme d'entraînement (6) de l'écrou. La vis (2) est soutenue par plusieurs renforts de support (14) qui sont fixés sur sa longueur. L'écrou (10) a la forme d'une spirale comportant des filets, dont le pas et l'épaisseur axiale (a) sont adaptés à la distance (b) entre les renforts (14) et à la dimension (c) de ces derniers dans le sens de la longueur de la vis de manière à permettre à l'écrou de passer librement au-delà des renforts; ces derniers passant dans les filets de l'écrou.
Alimak Ab
Smart & Biggar
LandOfFree
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