| 摘要 |
A clutch arrangement for rapid disengagement of two elements in a transmission system when a chosen torque is exceeded. The one element is a conical shaft-end which carries a corresponding sleeve (1). The sleeve carries externally at its ends two mutually separated ball bearings (5) and a force transmission ring (20) disposed therebetween. An annular force transmission body (7) surrounds and is carried by the ball bearings and includes a pressurisable hydraulic chamber which when pressurised through the medium of a valve on said body causes a reduction in the diameter of the inner surface of the body (7) so that said body will be brought into force transmitting engagement with the outer surface of the ring. The sleeve (1) carries a dogging element (14) which is adapted to act on an element (10) carried by the body (7) for depressurising the hydraulic chamber (8) upon relative rotation between the body (7) and the sleeve (1). The arrangement is such that the ring (20) and the body (7) will pass free from each other in the pressureless state of the hydraulic chamber (8). The ring (20) is operatively connected to the sleeve, so that relative rotation between the clutch components will take place between the ring and the body when the clutch is triggered.
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