Adjustable outer diameter measuring mechanism for large-diameter pipes

By designing an adjustable outer diameter measuring mechanism, the problems of cumbersome operation and large error in the diameter detection of large-diameter PE pipes have been solved, enabling rapid and accurate diameter and roundness detection, simplifying the operation process, and improving detection efficiency and accuracy.

CN224316975UActive Publication Date: 2026-06-02ANHUI RUIYUAN PIPELINE CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ANHUI RUIYUAN PIPELINE CO LTD
Filing Date
2026-04-14
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

The existing large-diameter PE pipe diameter inspection operation is cumbersome, inefficient, and has large measurement errors, making it difficult to accurately determine whether the roundness meets the standard. Moreover, the existing manual measuring tools cannot conveniently detect the roundness of the pipe.

Method used

An adjustable outer diameter measuring mechanism was designed, including a measuring crossbar, a slider, a positioning block, and a screw. The screw drives the positioning block to abut against the inner wall of the groove to fix the slider position. The diameter is read by the scale. The rotating wheel on the slider reduces friction. The arc strip and the arc groove limit the movement of the slider to achieve stable movement. The spring eliminates the thread gap. The device can rotate around the pipe to detect roundness.

Benefits of technology

It enables rapid and accurate diameter and roundness detection of large-diameter PE pipes, simplifies the operation process, reduces human error, and improves detection efficiency and accuracy.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224316975U_ABST
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Abstract

This utility model discloses an adjustable outer diameter measuring mechanism for large-diameter pipes, relating to the field of pipe diameter detection technology. The utility model includes a measuring crossbar with a fixed rod at its end. A groove is formed on the measuring crossbar, and a slider is placed within the groove. A movable rod is mounted on the slider, which also has a movable groove. A positioning block is placed within the movable groove, and a screw is also present on the slider. The fixed rod and movable rod cooperate, and the screw drives the positioning block to press against the groove for locking, ensuring accurate measurement results. The measuring crossbar has graduations for direct pipe diameter reading, simplifying operation. The slider uses rolling friction, resulting in smooth movement and minimal wear. Combined with the arc strip and arc groove for limiting, the structure is more stable. A spring eliminates thread clearance, improving positioning accuracy and preventing wobbling and idle travel. The device can rotate around the pipe to detect roundness, achieving simultaneous diameter and roundness detection. The overall structure is simple and easy to use, suitable for rapid on-site inspection of large-diameter PE pipes.
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