BELT INSPECTION METHOD OF BELT CONVEYER

摘要

PROBLEM TO BE SOLVED: To provide a belt inspection method of a belt conveyer which performs the measurement of a belt thickness of a cover rubber covering a steel cord inside the belt.SOLUTION: An X-ray transmission image of a belt 11 is created from a position in the advancing direction of the belt 11 which measures the signal of an X-ray strength distribution outputted for every fixed time from an X-ray line sensor 21 and the position in the advancing direction of the belt 11 having measured the X-ray strength distribution by arranging an X ray generator 19 on one side of either the upper side or the lower side of the belt 11 which is in a horizontal state and moving and the X-ray line sensor on the other side. The presence or absence of a reduced thickness of the cover rubber 14 is obtained from the presence or absence of a brightness increase part in the X-ray transmission image, and a generation position of the reduced thickness of the cover rubber 14 is obtained from the position in the X ray transmission image of the brightness increase part during the presence of the brightness increase part, respectively. A residual thickness of the cover rubber 14 of the brightness increase part is obtained by applying a brightness value of the brightness increase part to a determination relation.