DEVICE AND METHOD FOR MONITORING DEFECTIVE ROTATION OF ROTARY BODY IN WORKING EQUIPMENT

摘要

PROBLEM TO BE SOLVED: To judge the defective rotation of rotary bodies without using the reference rotational speed which is varied depending on the speed of a work. SOLUTION: In the defective rotation monitoring device of the rotary bodies in a working equipment provided with plural rotary bodies 14a, 14b which are revolved by contacting with the work or plural rotary bodies which are rotationally driven for feeding the work, this device is provided with rotational speed detecting parts 33 for respectively detecting the rotational speeds of the plural rotary bodies 14a, 14b and a defective rotation judging part 45 for judging the defects in the rotation of the rotary bodies 14a, 14b. In the defective rotation judging part 45, it is judged as defective rotation in the case that the difference between the rotational speeds of the respective rotary bodies 14a, 14b exceeds a prescribed range.