Safety gear for elevators

B - Operations – Transporting – 66 – B

Patent

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Details

B66B 5/18 (2006.01) B66B 7/04 (2006.01)

Patent

CA 2441989

The safety gear serves for braking an elevator car in an elevator system with a guide rail exhibiting an oblong guide flange. The safety gear comprises a holding device (1), which carries a retaining element (4, 6) and an abutment (5), whereby, in operation, the safety gear is arranged in such a manner that the guide flange is positioned between the retaining element (4, 6) and the abutment (5). A mechanism (8) is available, which squeezes, when braking, a braking element in the form of a blocking roller (7) between the guide flange and the abutment (5). The mechanism (8), cooperating with an electromagnet (3), exhibits a suspension (12) and in such suspension the braking element (7) is movably placed and can be moved in a controlled way between different positions, which are to be assigned to different operating conditions of the safety gear.

Le présent engrenage de sécurité sert à freiner une cabine d'ascenseur dans une installation d'ascenseur avec un rail de guidage présentant un patin de guidage allongé. Cet engrenage de sécurité comprend les éléments qui suivent. Un dispositif de maintien (1), qui porte un élément de retenue (4, 6) et un contrefort (5), par lequel, en fonctionnement, l'engrenage de sécurité fait que le patin de guidage se place entre l'élément de retenue (4, 6) et le contrefort (5). Un mécanisme (8), presse au freinage, un élément de freinage sous la forme d'un galet de blocage (7) entre le patin de guidage et le contrefort (5). Le mécanisme (8), qui coopère avec un électro- aimant (3), présente une suspension (12). Dans cette suspension, l'élément de freinage (7) est placé de manière amovible, et il peut être déplacé de manière contrôlée entre différentes positions qui doivent être affectées en fonction des différentes conditions de fonctionnement de l'engrenage de sécurité.

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