Abstract: Aiming at the problems of low accuracy, low automation level in the measurement methods of tip clearance of mine ventilator, a measurement method for tip clearance of mine ventilator based on 2D laser measurement was proposed. The geometric information of tip clearance was collected by a laser profile measurement sensor of LS-100CN, and the high-precision measurement of tip clearance was achieved by technologies of projection transformation and feature extraction. The parameters of form and position deviation of blades, form deviation of ventilator case and comprehensive tip clearance were used, the authentic geometric state of tip clearance was characterized and evaluated, and the more comprehensive and scientific evaluation results were obtained. The results show that the method has the characteristics of high accuracy and noncontact, and it can significantly improve the efficiency, accuracy and intelligent level of measurement.
Key words: 2D laser measurement; mine ventilator; tip clearance; precision optimization; characterization and evaluation