Rotating system critical speed whirl damper

Details Rotating system critical speed whirl damper Rotating system critical speed whirl damper

B - Operations, Transporting

04

B

233/8

B04B 9/04 (2006.01) B04B 13/00 (2006.01) F16F 15/00 (2006.01)

Patent

CA 1294936

8D-389 CANADA ROTATING SYSTEM CRITICAL SPEED WHIRL DAMPER Abstract of the Disclosure A centrifuge system includes a drive shaft bearing mounted to a drive shaft for engaging a solenoid actuated plunger in low friction contact over a predetermined angular velocity range of the drive shaft. The drive shaft bearing includes a frustoconical bearing surface that contacts a plunger bearing mounted in an end of the plunger when the solenoid actuates the plunger. The frustoconical bearing surface transforms vibrations of the drive shaft transverse to its axis of rotation into linear motion of the plunger relative to the drive shaft. The plunger is mounted inside the solenoid such that the solenoid, the plunger and the drive shaft are substantially concentric. The plunger is movable in the solenoid in response to application of an appropriate electrical current to the solenoid. However, the plunger fits sufficiently close within the solenoid that the force movement of the plunger arising from contact with the vibrating drive shaft bearing is damped by friction between the solenoid and the plunger.

507746

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