| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent breaking of each timing belt in advance so as to attain a long life of the timing belt, to attain simplified structure and improved appearance as well as reduced manpower and cost for production, and to detect elongation of each timing belt etc. accurately and reliably. <P>SOLUTION: A belt monitoring device is equipped with: rotary encoders 7a and 7b, each detecting a rotation position of each of rotation driving portions 4a and 4b; a deviation calculating unit 8 that obtains a deviation Ke between an encoder output value Da put out from one specific rotary encoder 7a and an encoder output value Db put out from the other rotary encoder 7b; an abnormality determining unit 9 that compares the deviation Ke with threshold values Ksf and Kss set in advance and determines that the deviation Ke hits the threshold value Ksf or more and/or the threshold value Kss or more; and an abnormality output unit 10 that outputs at least the determination result of abnormality determining unit 9. <P>COPYRIGHT: (C)2012,JPO&INPIT |
