Laser speckle detection device and method for tire of engineering machine

Abstract

The invention discloses a laser speckle detection device and a laser speckle detection method for a tire of an engineering machine. Negative pressure is applied to the external environment of the tire, the tire is horizontally arranged and is driven to rotate, and the inner side and the outer side of the tire are detected by using two probes respectively, so that the detection of defects of a deep layer inside the tire is facilitated; therefore, the defects existing inside the tire and specific positions of the defects are accurately detected, so that the accuracy of flaw detection inside thetire of the engineering machine is improved and optimized. The detection device comprises a vacuum device which forms a negative pressure environment, and a testing device and a rotating device whichare arranged inside the vacuum device, wherein the testing device is used for testing the inner side and the outer side of a detected tire by using a laser speckle technology respectively, and is provided with an inner probe and an outer probe, namely two independently-controlled and operated laser probes which can be moved and positioned along the vertical and horizontal directions; and the rotating device is used for bearing the detected tire and driving the detected tire to synchronously rotate.

Description

technical field [0001] The invention relates to a device and a detection method for laser speckle detection and detection of tires in a rotating state by using inner and outer laser probes, belonging to the fields of rubber machinery and industrial automation. Background technique [0002] With the rapid development of domestic mining, construction and other industries in recent years, higher requirements have been put forward for the use quality of large-scale construction machinery tires. In view of the limitations of the application site environment, excessive load and road surface conditions, construction machinery tires should have relatively high quality. High wear resistance, puncture resistance and high overload performance are particularly important for the inspection of tire internal defects (such as internal air bubbles and quality defects such as delamination). [0003] The existing domestic conventional construction machinery tire inspection method is to impleme...

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Problems solved by technology

[0011] Another object of the invention is to overcome the impact of the strength on different sides of the defect caused by the internal structure of the tire on the detection (the closer the defect is to the tire surface, the easier it is to cause the deformation of the corresponding surface of the tire, and the greater the strength between the defect and the tire surface, the greater the impact on detection. It is difficult to reflect the deformation of defects in different states), and the detection is carried out on the inner or outer side of the tire respectively to improve the accuracy of detection

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