Pulse laser irradiation device

The pulsed laser irradiation device addresses health and efficiency issues in bridge girder surface preparation by decomposing materials into fumes and collecting debris, ensuring a safe and efficient process with uniform quality.

JP7750754B2Active Publication Date: 2025-10-07SHIMIZU CORP +1
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Patent Information

Application Number
JP2022004603
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Filing Date
2022-01-14
Publication Date
2025-10-07
Estimated Expiration
2042-01-14

AI Technical Summary

Technical Problem

Conventional surface preparation methods for bridge girder coatings pose health risks to workers due to hazardous substances and dust dispersion, inefficiencies, and quality variations, while existing vacuum blasting devices face material scattering and equipment breakdowns.

Method used

A pulsed laser irradiation device that uses a pulsed laser to decompose target materials into fumes, a scraper to remove adhered materials, and a recovery unit to collect and classify debris, ensuring safe and efficient surface preparation.

Benefits of technology

Ensures a safe working environment, high efficiency, and high-quality surface preparation by minimizing material scattering and quality variations, reducing construction time, and improving worker safety.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

To provide a basis material preparation method that can ensure safe working environment, high efficiency, and high quality basis material preparation surface.SOLUTION: A pulse laser irradiation device includes a pulse laser irradiation unit 11 for irradiating a to-be-removed object 25 adhering to a structure 2 with a pulse laser 11a, a scraper 13 inserted between the to-be-removed object 25 separated from the structure 2 by the irradiation of the pulse laser 11a and the structure 2 and a recovery unit 16 for recovering the to-be-removed object 25 that has been removed from the structure 2.SELECTED DRAWING: Figure 3
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Citation Information

Patent Citations

  • Coating film removal method and laser beam application device

    JP2014079664A

  • Laser decontamination device, laser decontamination system and laser decontamination method

    JP2020016530A

  • Floor slab replacement method and steel girder construction device

    JP2020176420A

  • Bridge floor slab replacement method

    JP2021001536A