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AssigneeBridgestone Corporation
InventorsSatoshi Aizawa, Takahisa Shizuku, Masami Kikuchi, Kenichi Higashi
Estimating the term…
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.
A method of measuring conveyor belt wear extent, wherein when the wear extent of the surface of a running conveyor belt is measured, a magnetic field from a rubber magnet which is provided in a desired portion of conveyor belt and a part of which is exposed on the conveyor belt surface is detected by a magnetism sensor fixed to the earth, and the wear extent of conveyor belt is determined from the magnitude of the detected magnetic field by utilizing a phenomenon that the magnetic field is varied by a decrease in volume of rubber magnet caused by the progress of wear of the desired portion of conveyor belt.
Dependencies are inferred from the claim text.