| 摘要 |
A brake cylinder for pneumatically actuated vehicle brakes, especially for utility vehicles, including a spring-loaded brake section for carrying out parking braking processes by way of a cylinder spring, and an operating brake section for carrying out operating braking processes actuated by compressed air. The spring-loaded brake section and the operating brake section are combined to form a structural unit in a housing. The housing is divided into two chambers by a piston, one of the chambers is used as a pressure chamber for actuating the operating brake section. The cylinder spring of the spring-loaded brake section is arranged in the other chamber on the opposite side of the piston. The cylinder spring acts on another spring-loaded piston in the chamber, which can be blocked in relation to the first piston by a pneumatically actuated locking mechanism, and can be released from the first piston by the releasing action of the blocking mechanism. Following the release of the blocking mechanism, the cylinder spring acts between the two pistons and moves the two pistons in relation to each other during a parking brake process. The pneumatically actuatable blocking mechanism acts only in an expansion direction of the spring.
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