| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a belt drive device capable of automatically restoring running of a belt which stops if there is no abnormality in the belt and a position detection sensor and giving alarm without restoring the belt automatically if it is determined that a belt itself is broken even when a belt breakage prevention means operates and running of the belt stops. <P>SOLUTION: This belt drive device is provided with a means for determining that the belt breakage prevention means operates, a means for storing the number of operation of the belt breakage prevention means, an automatic restoration means for resuming drive of the endless belt, and an abnormality alarm giving means. When the breakage prevention means operates, this device performs automatic restoration operation of the belt and gives alarm for abnormality when the breakage prevention means operates by the specified number. <P>COPYRIGHT: (C)2004,JPO&NCIPI |
