Method and device for measuring conveyor belt elongation, method and device for measuring conveyor belt wear extent, method and device for measuring conveyor belt temperature, rubber magnet sheet, and method of producing rubber magnet sheet

摘要

Methods and devices for measuring elongation, wear, and internal temperature of a conveyor belt to catch signs of conveyor belt failure such as breakage by detecting a magnetic field from a magnetic body by using a magnesium sensor, as well as a rubber magnet sheet as a magnetic body and a method of producing the sheet, the rubber magnet sheet being able to be used while it is embedded in the conveyor belt. To measure elongation of a running conveyor belt ( 11 ), a magnetic field of a magnetic body ( 2 ) embedded in the belt ( 11 ) is detected by a magnetism sensor ( 3 ) fixed to the earth, and elongation of the belt ( 11 ) is calculated from temporal variation of the detected magnetic field.