Laser point fixing device for fast centering in PCCP (prestressed concrete cylinder pipe)

The laser positioning device can quickly and accurately determine the center axis of the PCCP pipe, solving the problems of low measurement accuracy and low efficiency in traditional methods, and improving construction efficiency and quality.

CN224416039UActive Publication Date: 2026-06-26CHINA HYDROPOWER FOURTH BUREAU (QINGHAI) TESTING TECHNOLOGY CO LTD +1
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Patent Information

Application Number
CN202521978703.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-09-15
Publication Date
2026-06-26
Estimated Expiration
2035-09-15

AI Technical Summary

Technical Problem

Traditional methods for determining the centerline of PCCP pipes suffer from low measurement accuracy, complex operation, and low efficiency, making it difficult to meet the high precision and high efficiency requirements of modern engineering construction.

Method used

A laser positioning device is used to determine the center point by the intersection of the laser beam emitted by the laser emitter and the inner wall of the PCCP pipe. Combined with the pipe level and power supply box, the operation process is simplified and the measurement accuracy and efficiency are improved.

Benefits of technology

It enables rapid and accurate determination of the PCCP pipe's center axis, reducing installation errors, improving construction efficiency and quality, and reducing rework costs.

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Abstract

A laser point fixing device for rapid centering in a PCCP comprises a ruler body, and the ruler body comprises a rectangular frame, a back plate installed on the back face of the rectangular frame and a cover plate installed on the front face of the rectangular frame. A tubular water level is mounted at the central position above the rectangular frame; a laser point fixing device is fixedly mounted in the center of a lower panel of the rectangular frame, and the central axis of the laser point fixing device is coaxial with the central line of the tubular spirit level; a power supply box is fixedly mounted in the rectangular frame and located on a back plate of a right side panel, a power supply switch protruding out of the right side panel of the rectangular frame is arranged on the right side of the power supply box, and the laser point fixing device is electrically connected with the power supply box; the device is simple in structure and convenient to operate, the ruler body can be rapidly placed at the inner end opening of the PCCP and adjusted to be in the horizontal state, the power switch is turned on, the center line of the PCCP can be rapidly determined through laser beams emitted by the laser emitter, the follow-up measurement precision is remarkably improved, the pipeline installation error is effectively reduced, and the pipeline installation quality is improved.
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