| 摘要 |
A high speed textile spindle assembly is provided which includes a spindle adapted to support a yarn package, a spindle support housing, and bearing means rotatably mounting the spindle on the support housing and including a relatively elastic, electrically nonconductive member, and such that the spindle is adapted to be operated at a rotational speed above its critical speed to thereby avoid vibrational resonant conditions. A monitoring circuit is provided for detecting metal to metal contact between the spindle and support housing, which would be indicative of a failure of the elastic member, and which could result in operation at its critical speed and damage to the assembly from the resulting excessive vibrations. Upon the detection of such contact, the monitoring circuit initiates a responsive electrical signal, which preferably terminates rotation of the spindle. The monitoring circuit also includes provision for monitoring its own proper functioning.
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