A safety brake arrangement in a brake actuator

B - Operations – Transporting – 60 – T

Patent

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Details

B60T 13/02 (2006.01) B60T 17/08 (2006.01) B61H 1/00 (2006.01)

Patent

CA 2201330

A brake actuator for delivering a brake force through a brake block or brake pad to a wheel or disc to be braked comprises in a housing (1) a service brake arrangement (3, 5). The actuator also comprises a safety brake arrangement (4, 9) including at least one powerful spring (9), acting in the brake application direction, means for tensioning the spring by the reaction force at a service brake application, and mechanical means (11, 12, 13) for locking the spring to the housing in a tension state. These locking means can be released at will for accomplishing a safety brake application.

Un actionneur de frein conçu pour envoyer une force de freinage par l'intermédiaire d'un patin de frein à une roue ou à un disque à freiner, comprend un dispositif de frein à pied (3, 5) situé dans un logement (1). L'actionneur comporte également un dispositif de frein de sûreté (4, 9) constitué d'au moins un ressort puissant (9) agissant sur l'orientation de l'application du frein, d'un moyen de tension du ressort sous l'effet de la force de réaction au niveau de l'application du frein à pied, et un moyen mécanique (11, 12, 13) conçu pour bloquer le ressort sur le logement à l'état tendu. Ce moyen de blocage peut être relâché à volonté pour l'application du frein de sûreté.

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