一种基于激光测距的导管内表面缺陷测量装置

By combining a laser ranging device with a support positioning and rotation drive mechanism, the problem of accurately measuring defects on the inner surface of the conduit is solved, providing an accurate, convenient and economical measurement solution.

CN122409698APending Publication Date: 2026-07-17SHENYANG AIRCRAFT CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHENYANG AIRCRAFT CORP
Filing Date
2026-05-14
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing detection methods are insufficient to achieve accurate quantitative measurements on the inner surface of catheters, especially in confined spaces. Optical 3D scanners cannot enter and are complex to operate, while endoscopes rely on human visual observation and cannot provide precise values.

Method used

A laser ranging-based device for measuring defects on the inner surface of a conduit is used. It includes a hollow shaft, a support and positioning mechanism, a measuring head, and a rotation drive mechanism. The device uses a laser displacement sensor in conjunction with an optical camera to obtain the depth or height of defects through rotation and axial movement.

Benefits of technology

It enables precise quantitative measurement of defects on the inner surface of catheters. The device is compact, low-cost, easy to operate, avoids secondary scratches, adapts to different inner diameter specifications, and provides intuitive and accurate measurement results.

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Abstract

本申请公开了一种基于激光测距的导管内表面缺陷测量装置,包括空心轴、支撑定位机构、测量头、旋转驱动机构及控制中心。支撑定位机构由固定盘、滑动盘、弹簧、支撑杆和小支撑臂构成,固定盘固套于空心轴,滑动盘可轴向滑动,弹簧作用于两盘之间,支撑杆首端铰接于固定盘、末端抵接内壁,小支撑臂铰接滑动盘与支撑杆。测量头可转动套于空心轴并设光学相机和激光位移传感器。旋转驱动机构驱动测量头旋转。控制中心电连接各电器件。装置自适应对中,光学相机辅助定位,激光扫查内壁轮廓,依距离转角曲线得出缺陷深度或高度。本申请紧凑便携,适配多管径,解决狭窄内壁缺陷量化测量难题。
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