| 摘要 |
Centrifuges are known which have a working head placed on a shaft driven by a motor, and in which a longitudinally slotted sleeve is disposed between the shaft and a central bore in the working head. This sleeve is expanded against the bore by a conical spreader driven by a threaded element screwed onto the end of the drive shaft. To create a tight and wobble-free coupling between the working head and the drive shaft of the centrifuge which will be secure even after long use and frequently changing torque, but which will assure easy release, the shaft has a tapered end and on this end, which reaches into the central bore of the working head, is seated the spreader, which is in the form of a bushing with a tapering bore, and the threaded element has on its outer circumference projections which engage indentations in the spreader. |
