Balanced actuator device and hoisting and transporting...

B - Operations – Transporting – 66 – F

Patent

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Details

B66F 7/10 (2006.01) B66F 7/02 (2006.01) B66F 7/28 (2006.01)

Patent

CA 2687417

A balanced actuator device for lifting and transporting apparatus comprises a bearing frame (3), means (4) for supporting an external load (L), substantially vertical guide means (5) associated with said frame (3) to guide said support means (4), drive means (6) operating on said support means (4) to move them along said guide means (5) by a predetermined stroke (c) between a lower end position (A) and a upper end position (B). The drive means (6) include at least one preloaded elastic actuator element (7) which is designed to exert a sufficient balancing force (F) on said support means (4) to at least partially balance the load (L) thereby allowing minimization of the size of the drive means (6).

La présente invention concerne un dispositif d'actionneur équilibré pour un appareil de levage et de transport. Ledit dispositif comprend un cadre porteur (3), des moyens (4) pour supporter une charge externe (L), des moyens de guidage sensiblement verticaux (5) associés au dit cadre (3) pour guider lesdits moyens de support (4), des moyens d'entraînement (6) agissant sur lesdits moyens de support (4) pour les déplacer le long desdits moyens de guidage (5) selon une course prédéterminée (c) entre une position d'extrémité inférieure (A) et une position d'extrémité supérieure (B). Les moyens d'entraînement (6) comprennent au moins un élément d'actionneur élastique préchargé (7) qui est conçu pour exercer une force d'équilibrage suffisante (F) sur lesdits moyens de support (4) pour équilibrer au moins partiellement la charge (L), permettant, de ce fait, la réduction de la taille des moyens d'entraînement (6).

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