| 摘要 |
<p>The present invention relates to a disc brake for use on a railway vehicle. The brake comprises a service brake (5) for normal brake applications and an auxiliary or parking brake (7) which is spring applied and hydraulically or pneumatically released. Known service and auxiliary brake installations are relatively bulky and the main aim of the present invention is to reduce the required installation space.</p><p>The disc brake of the present invention comprises a caliper (1) supporting a service brake actuator (5) and an auxiliary brake actuator (7) arranged to apply opposed friction pads (9, 11) to opposite sides of a braking disc (3). The auxiliary brake actuator (7) comprises one or more spring elements (19) which engage around and grip the caliper (1), the spring elements (19) being releasable by hydraulic or pneumatic means (21, 23; 31; 36; 45, 47) such that the spring force of the spring elements (19) is then reacted through the caliper (1). By this arrangement of spring elements (19), the spring elements (19) being preferably located in grooves (71) on the outer surface of the caliper (1), a compact disc brake construction is achieved.</p> |
