| 摘要 |
This brake/clutch combination with a) the clutch released and the brake in the load-holding position, b) clutch engaged to move the load and the brake released, c) clutch and brake released for free cable (rope) payout, reduces the outlay on construction and space as compared with the hitherto customary embodiments by limiting the number of parts to the minimum. Thus only a single friction disc is used for both the braking and coupling operation. The series arrangements of the clutch and brake makes possible an enforced overlap of the braking and clutch torque, as required for reasons of safety. By displacement of the clutch disc (7) to the left, a clutch torque is built up via the friction disc (11) while, at the same time, the braking torque between the pressure plate (12), the friction disc (11) and the braking surface (8) is reduced. The input shaft (1) thus takes along the output shaft (15) without an interruption to the cable force. By displacement of the sleeve (13) to the left, the transmission of force from the spring element (14) to the braking surface is interrupted and the brake is released to allow free cable payout. The series connection of the brake and clutch permits coupling and brake release with just a single expenditure of force. <IMAGE>
|
