| 摘要 |
<p>A laboratory centrifuge comprises a rotor (1) mounted on an upstanding rotary drive shaft (3) with a releasable mechanism which allows the rotor to be removed from the shaft when required and which locks the rotor to the shaft in the working position so that the rotor turns with the shaft and cannot move axially thereon. The mechanism comprises a ring (7) mounted for lateral sliding movement on the rotor and urged by a spring (8) so that when the rotor is pushed far enough down on to the shaft the inner edge of the ring will click into a peripheral recess (11) on the shaft and lock the rotor against axial movement. At the same time a second ring (14) secured to the rotor engages round a lower section of the shaft, the matching cross-sections of ring and shaft constraining the rotor to turn with the shaft. Ring (7) carries and upstanding finger (12) which enables the ring to be pushed laterally against spring (8) to release the locking and allow the rotor to be lifted from the shaft.</p> |
