A small-diameter automatic spraying robot

By introducing a control mechanism consisting of a moving ring, a control ring, and a guide column into the spraying robot, the coaxiality and travel resistance problems of rotary spraying in small-diameter pipes were solved, achieving high-efficiency spraying quality and stable operation.

CN224423253UActive Publication Date: 2026-06-30QINHUANGDAO CHENGGENG TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
QINHUANGDAO CHENGGENG TECH CO LTD
Filing Date
2025-07-18
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Existing painting robots lack the ability to autonomously walk in pipes and the precision of automated control. Especially when rotating and spraying in small-diameter pipes, excessive alignment arm structures increase the resistance to passage and affect the ability to overcome obstacles and turn.

Method used

The control mechanism consists of a movable ring, a control ring, an alignment arm, and a guide column. By sliding the guide column in different channels, the alignment arm can be flipped and unfolded to ensure the coaxiality of the rotating spray gun with the pipeline. The lifting mechanism maintains the stable movement of the spraying robot in the pipeline.

Benefits of technology

It improves spraying quality and construction efficiency, reduces resistance when moving inside pipes, enhances adaptability to different pipe diameters, and enables effective storage of the alignment arm, ensuring stable operation of the spraying robot in the pipe.

✦ Generated by Eureka AI based on patent content.

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Abstract

This application relates to a small-diameter automatic spraying robot, which includes a movable base and a body. The body is equipped with: a movable ring rotatably fitted at the front end of the body; a control ring rotatably fitted at the rear end of the body, with a guide post fixed to its inner wall; two alignment arms symmetrically hinged to the outer periphery of the movable ring; a connecting rod, one end hinged to the alignment arm and the other end hinged to the control ring; a first straight groove and a spiral groove, both opened along the axial direction of the body and connected at their ends, both slidably connected to the guide post; when the guide post slides in the first straight groove, the two alignment arms are in a horizontal plane; when the guide post slides at the front end of the spiral groove, the two alignment arms are in a vertical plane; and a control mechanism for driving the guide post to slide along the axial direction of the body towards the front end and controlling the guide post to enter the first straight groove or the spiral groove. This application allows for coaxiality calibration of the two alignment arms in the vertical plane before spraying and provides centering guidance in the horizontal plane during spraying.
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