| 摘要 |
<p>An actuating device for a vehicle brake rigging, comprising a service brake and a spring parking brake. The device comprises, apart from a service brake cylinder (1) and piston (2) and a parking brake cylinder (15, 17) and piston (12), a ratchet wheel (8) disposed between the two pistons, non-permanent connection means (6, 7) provided between the ratchet wheel and the service brake piston; and further connection means (10, 12) provided between the ratchet wheel and the parking brake piston; the ratchet wheel being controllable in translation and in rotation-translation, depending on whether a chamber (B) of the parking brake cylinder is either emptied or fed.</p> |
