Pneumatically actuable disk brake

Details Pneumatically actuable disk brake Pneumatically actuable disk brake

F - Mech Eng,Light,Heat,Weapons

16

D

F16D 65/14 (2006.01)

Patent

CA 2732688

A pneumatically actuable disk brake, having a brake caliper which engages over a brake disk, having brake linings which can be pressed against the brake disk at both sides and of which a brake-application-side brake lining can be actuated by means of a brake lever, which can be pivoted about an eccentric axis, of a brake application device, wherein a plunger of a brake cylinder which can be acted on with compressed air engages on the brake lever, is designed such that a self-energizing device is provided which has a self-energizing factor selected to ensure that the brake automatically releases after braking events, and such that the brake lever is supported at least on a spherical bearing element which is mounted in the brake caliper and which forms the eccentric rotational axis, and said brake lever bears against a bearing ball which is arranged above the bearing element in the direction of the plunger engagement point, which bearing ball is positioned in a brake ram which is connected to the brake-application-side brake lining.

L'invention concerne un frein à disque actionnable pneumatiquement, avec un étrier de frein (1) enjambant un disque de frein (2), des garnitures de frein (3) pouvant être appliquées de chaque côté contre le disque de frein (2), dont la garniture côté application de la force peut être actionnée à l'aide d'un levier de frein (5) pivotant autour d'un axe excentrique d'un dispositif de serrage. Un coulisseau (19) d'un cylindre de frein (18) pouvant recevoir de l'air comprimé coopère avec le levier de frein (5). Le frein à disque comprend un dispositif d'auto-amplification qui présente un facteur d'auto-amplification choisi de manière à ce que le frein se desserre automatiquement après les freinages. Le levier de frein (5) s'appuie sur au moins un élément d'appui (10) en forme de bille monté dans l'étrier de frein (1) et constituant l'axe excentrique et repose sur une bille d'appui (9) disposée dans la direction du point de contact du coulisseau au-dessus de l'élément d'appui (10) et positionnée dans un piston de frein (6) relié à la garniture de frein (3) côté application de la force.

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