Adjusting device for a pneumatic disc brake

F - Mech Eng,Light,Heat,Weapons – 16 – D

Patent

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Details

F16D 65/38 (2006.01) F16D 65/14 (2006.01) F16D 65/56 (2006.01)

Patent

CA 2575305

The invention relates to an adjusting device for adjusting the wear of the friction surface on the brake lining and brake disc of a pneumatic disc brake, which has a clamping device that is actuated by a rotary lever and that can be preferably inserted into a rotary spindle of the disc brake. According to the invention, a respective anti-friction body is positioned on both axial sides of a drive element such as a control fork, one of said bodies being configured as a ramp coupling (9) with a freewheeling function. The ramp coupling has coupling bushes (10, 11) and clamping balls (12) and the coupling bush (11) on the driven side is supported on a sprung sleeve (14) for a pretensioning spring (15). A coupling-type conical seat (23, 24) is configured between the coupling bush (11) and the sprung sleeve (14).

L'invention concerne un dispositif pour réajuster l'usure des surfaces de frottement sur la garniture et le disque d'un frein à disque à actionnement pneumatique doté d'un dispositif d'application du frein actionné par un levier pivotant étant de préférence inséré dans une broche de tournage du frein à disque. Des deux côtés d'un élément d'entraînement tel qu'une fourchette de commande se trouve dans l'axe un ensemble éléments de roulement dont un est conçu comme un accouplement à rampe à billes (9) avec fonction roue libre. Cet accouplement à rampe à billes comporte des coussinets d'accouplement (10, 11) et des billes de serrage (12), le coussinet d'accouplement (11) côté sortie appuyant sur une gaine (14) de ressort de précontrainte (15), et une embase conique (23, 24) de type accouplement étant formée entre le coussinet d'accouplement (11) côté sortie et la gaine (14) de ressort.

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