Detection method for fastener and detection device thereof

Abstract

The invention discloses a fastener looseness detection method and a detection device thereof, and the method comprises residual pre-tightening force detection and looseness detection, and the pre-tightening force detection comprises the following steps: step 1, coating the head of a fastener with a luminescent material; and step 2, enabling the mechanoluminescent material to generate strain change. The looseness detection includes the following steps: step 1, enabling the side face of the head of a fastening piece and a base material of a connected piece to be provided with scribed lines; and 2, comparing the lineation on the fastening piece with the lineation on the base material of the connected piece to judge whether relative slip occurs or not. After the fastener is loosened, the loosened fastener is mounted, and in the mounting process, the corresponding wavelength can be compared according to the color emitted by the luminescent material, and then the pre-tightening force is loaded, so that accurate pre-tightening force mounting is realized, a worker does not need to independently check the loosening phenomenon of the fastener. The automatic setting is more convenient and faster, and the labor cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of fastener detection, and in particular relates to a detection method and a detection device for fasteners. Background technique [0002] Loose fasteners are a frequent phenomenon. When loose fasteners occur, it will cause a great safety hazard. Therefore, after a period of time, the staff needs to check the fasteners and check the loose fasteners. Fasteners are reinforced and tightened. This method causes the staff to work harder, and if the staff is not careful, the loosening of the fasteners will not be detected, so the detection effect is poor. Contents of the invention [0003] In order to overcome the deficiencies of the prior art, the invention provides a detection device of a pretightening force detection method. [0004] In order to achieve the above object, the present invention adopts the following technical solutions: a detection method for fasteners, including pre-tightening force detection ...

AI Technical Summary

Problems solved by technology

[0002] Loose fasteners are a frequent phenomenon. When loose fasteners occur, it will cause a great safety hazard. Therefore, after a period of time, the staff needs to check the fasteners and check the loose fasteners. Fasteners are tightened and tightened. This method causes the staff to work harder, and if the staff does not pay attention, the loosening of the fasteners will not be detected, so the detection effect is poor.

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