VARIABLE-SPEED GEARING
Journal Article
·
· Nuclear Eng.
OSTI ID:4316133
In the movement of control rods in one type of nuclear reactor it is required that the rods are withdrawn at one tenth of the speed at which they are inserted. This can be achieved by a gearing in which the input shaft is driven by an electric motor having a sun gear fixed to the shaft snd an output gear wheel meshing with a wheel fixed to rotate with a planet wheel. The planet wheel is rotatable on a carrier in mesh with the sun wheel. A mechanical freewheel device is provided between input shsft and carrier and an electromagnetic brake for restraining the carrier. A single switch with multiple contacts reverses the drive and chsnges the energization of the electromagnetic brake so that the reversal of the rotation of the motor coincides with the change of the speed ratio. (auth)
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-12-003455
- OSTI ID:
- 4316133
- Journal Information:
- Nuclear Eng., Journal Name: Nuclear Eng. Vol. Vol: 2
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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