RELEASE DETECTION APPARATUS FOR BOLT AND NUT USING SPRING WASHER AND CONDUCTOR

摘要

The present invention relates to an apparatus for detecting the loosening of a bolt and a nut using a spring washer and a conductor. The apparatus comprises: a loosening measuring unit which measures a loosening state between a bolt and a nut that are fastened to each other; and a data analyzing unit which determines that the bolt and the nut are loosened when no sensing signal measured by the loosening measuring unit is inputted. The loosening measuring unit comprises: first and second washers which include first and second conductors that come in contact with each other in order to output a sensing signal when the bolt and the nut are fastened; and a spring washer which blocks the output of the sensing signal by separating the first and second washers in order to separate the first and second conductors from each other when the bolt and the nut are loosened. Therefore, the apparatus for detecting the loosening of a bolt and a nut can determine a loosening state between a bolt and a nut by sensing the loosening state using a spring washer and a conductor unlike existing methods such as a visual inspection, and by analyzing the sensing signal, and can accurately detect the position of the loosened bolt and nut. In particular, the apparatus can accurately detect the loosening state between the bolt and the nut at a part which is difficult to be visually inspected.