吉林大学学报(工学版) ›› 2014, Vol. 44 ›› Issue (5): 1303-1307.doi: 10.7964/jdxbgxb201405013

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Dynamic detection and early-warning strategy of wear of brake shoe of truck

SUN Wen-cai1, LI Jun2, LI Shi-wu1, TIAN Jing-jing3, XU Yi1   

  1. 1.College of Transportation, Jilin University, Changchun 130022, China;
    2.College of Automotive Engineering, Jilin University, Changchun 130022, China;
    3.Research Institute of Highway Ministry of Transport, Beijing 100088, China
  • Received:2013-06-03 Online:2014-09-01 Published:2014-09-01

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Abstract: To realize the dynamic detection and early-warning of wear of brake shoe of truck, the wear rule of S-shaped cam drum brake was analyzed. Then a dynamic detection method of the wear of brake shoe was proposed based on resistance classification. A calculation model of the resistance classification was built to calculate the resistance values of the dynamic detection sensor for wear status of brake shoe with 12 classes. A testing platform was built with Jie-Fang Sailing heavy truck and Freescale microcontrollers and the detection test was carried out. The test results show that the thresholds of change of output voltage between two different early-warning classes was higher than 0.25 V. The wear status of a 12 mm brake shoe can be dynamically detected with 12 grades under the significant level of α = 0.01. The feasibility and accuracy of the dynamic detection method of wear status of brake shoe were verified.

Key words: vehicle engineering, brake shoe, wear status, dynamic detection and early-warning

CLC Number: 

  • U492.8
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