| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve the accuracy of abnormality detection of a double row conical bearing 3 for supporting an axle 1 in a bearing box 2a. <P>SOLUTION: A potation speed sensor 27a, a temperature sensor 29a, and a vibration sensor 44 are held in a sensor holder 43. The existence of the abnormality of the double row conical bearing 3 is determined based on detection signals of the temperature sensor 29a and the vibration sensor 44. The threshold for abnormality determination is altered based on a detection signal of the rotation rate sensor 27a. This constitution allows detection of the abnormality occurring at a low speed time. <P>COPYRIGHT: (C)2008,JPO&INPIT |
