公开(公告)号：US5295388A

公开(公告)日：1994-03-22

申请号：US828099

申请日：1992-01-30

申请人： Mark W. Fischer ,  James W. Alford ,  George F. Dailey ,  John E. Noll, Jr.

发明人： Mark W. Fischer ,  James W. Alford ,  George F. Dailey ,  John E. Noll, Jr.

IPC分类号： G01M7/08 ,  G01M7/00

CPC分类号： G01M7/08

摘要： Method and apparatus for performing remote impact testing for generator stator wedges and ripple springs. An improved low profile carriage is utilized for correlating wedge displacement data with the force required to displace the wedge. A calibrated test stand, in which exemplary wedges are placed under a known loading via a hydraulic load cell, provides means for generating calibration curve sets. From the graphed forcedisplacement curves generated from wedges placed under a known loading, force and displacement data generated during actual stator testing can be analyzed to measure the tightness or looseness of stator wedges, coils and ripple springs. In the preferred embodiment of the low profile carriage of the present invention, a capacitive sensor is used to directly measure the displacement or vibration of stator wedges as a result of being struck by an impact hammer with a known force.

摘要翻译： 用于对发电机定子楔和波纹弹簧进行远程冲击试验的方法和装置。 使用改进的低轮廓滑架将楔形位移数据与移位楔所需的力相关联。 校准的测试台，其中示例性楔形物通过液压测力传感器放置在已知负载下，提供用于产生校准曲线组的装置。 从在已知负载下放置的楔形产生的图形强制位移曲线中，可以分析在实际定子测试期间产生的力和位移数据，以测量定子楔，线圈和波纹弹簧的紧密度或松动度。 在本发明的低剖面滑架的优选实施例中，电容式传感器用于直接测量定子楔的位移或振动，这是由于以已知的力被冲击锤击打的结果。