TPU reinforced long-life shield tail brush and test system

By using a TPU-reinforced tail brush structure and a four-dimensional monitoring system with integrated sensing modules, the problem of rapid wear of the tail brush in high Cl- environments was solved, enabling efficient and accurate life assessment and parameter optimization, improving testing efficiency and reducing costs.

CN120990614APending Publication Date: 2025-11-21BEIJING JIAOTONG UNIV
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Patent Information

Application Number
CN202510910278.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-07-02
Publication Date
2025-11-21

AI Technical Summary

Technical Problem

Existing shield tail brush materials wear out rapidly in groundwater environments with high Cl- concentrations, resulting in a shortened service life, and there is a lack of effective dynamic monitoring and evaluation systems.

Method used

It adopts a TPU-reinforced shield tail brush structure, combined with laser scanning, thermal imaging and Cl-/SO2 sensors, and integrates a sensing module for four-dimensional high-frequency monitoring. The acquisition frequency is adjusted through the linkage unit, and the performance degradation is evaluated by the monitoring module. The control module automatically adjusts the operating parameters and generates a wear-resistance and corrosion coupling matrix.

Benefits of technology

It accurately captures the performance degradation of TPU materials under high corrosion and high wear conditions, increases data acquisition density by 40%, reduces evaluation error to ±12%, improves testing efficiency by 30%, and reduces costs by 25%.

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Abstract

The invention relates to the technical field of shield tail brush material performance, and discloses a TPU reinforced long-life shield tail brush and a test system. The system comprises a sensing module, a judgment module, an alarm module, a monitoring module, a control module and a message module. The sensing module dynamically adjusts the acquisition frequency based on the equipment position through the linkage unit, the monitoring module establishes a recession evaluation model by combining the wear depth, the corrosion degree, the temperature and the gas concentration, and the control module optimizes the experimental parameters according to the evaluation result. Through multi-dimensional dynamic monitoring and intelligent regulation and control, high-precision performance evaluation of the shield tail brush in the abrasion and corrosion coupling environment is achieved, compared with a traditional testing scheme, the testing efficiency is improved by 30%, the evaluation error is reduced to + / -12%, the actual working condition of tunnel construction is effectively simulated, and data support is provided for TPU material optimization.
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