Braking device for a lift

B - Operations – Transporting – 66 – B

Patent

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Details

B66B 5/22 (2006.01)

Patent

CA 2408024

The invention relates to a brake device (6), acting upon a guide rail (2) and comprising a housing (9) arranged on the yoke (4, 5), which serves as support for spring assemblies (10) and/or for adjustment assemblies (11). The housing (9) also serves as support and guide for V-guide elements (12), which in turn fix and guide brake wedges (13) with brake linings (14). Connecting rods (15) are connected at one end to the brake wedges (13) and are connected at the other to an operating fork (8.2). During braking, the operating fork (8.2) is displaced at the connecting rod end in the direction of the braking device (6). The guided brake wedges (13) with brake linings (14) slide in the brake device (6). At the same time the brake linings (14) are moved onto the guide web (2.1) of the guide rail (2). The brake wedges (13) are moved in the brake device (6) and the spring- and adjuster-assemblies (10, 11) are put under load, which generates a braking force for stopping of a lift cabin or a counterweight.

L'invention concerne un dispositif de freinage (6) agissant sur un rail de guidage (2) et comprenant un bâti (9) monté sur le châssis (4, 5) et servant de support pour des blocs-ressorts (10) et/ou des pièces d'ajustage (11). Ce bâti (9) sert également de support et de guide pour des éléments de guidage de coins (12), qui maintiennent et guident des coins d'écartement de frein (13) pourvus de garnitures de frein (14). Des bielles (15) sont reliées d'un côté aux coins d'écartement de frein (13) et de l'autre à une fourchette d'actionnement (8.2). Pendant le freinage, cette fourchette d'actionnement (8.2) est déplacée, côté bielles, en direction du dispositif de freinage (6). Les coins d'écartement guidés (13) glissent avec les garnitures de frein (14) dans le dispositif de freinage (6). Les garnitures de frein (14) sont déplacées simultanément sur l'âme (2.1) du rail de guidage (2). Les coins d'écartement de frein (13) sont déplacés dans le dispositif de freinage (6) et les blocs-ressorts et pièces d'ajustage (10, 11) sont contraints. Une force de freinage est alors produite pour arrêter une cabine d'ascenseur ou un contrepoids.

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