GB/T 28529-2025Platform brake testers (English PDF)

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents". Drafting.

This document replaces GB/T 28529-2012 "Flat-plate Brake Testing Bench". Compared with GB/T 28529-2012, the main differences are in structural adjustments and...

Aside from editorial changes, the main technical changes are as follows.

a) The terms "wheel load," "difference between indicated braking force values," "difference between indicated wheel load values," and "starting force of the brake plate" and their definitions have been added (see 3.3). 3.6, 3.7, 3.9);

b) The terms and definitions for “maximum weighing” and “deflection” have been changed (see 3.5, 3.8, and 3.3, 3.5 in the 2012 edition);

c) The "Classification and Model" section has been changed (see Chapter 4, Chapters 4 and 5 of the 2012 edition);

d) An additional requirement for "environmental adaptability" has been added (see 5.1.1);

e) The requirements for "Technical Specifications" and "Units of Measurement" have been changed (see 5.1.2.1, 5.1.2.2, and 6.1.2 and 6.1.3 in the 2012 edition);

f) The requirements for “resolution” and “discrimination” have been removed (see Table 2 in the 2012 edition);

g) An additional requirement for "display device resolution" has been added (see 5.1.2.2);

h) The requirement for a "flat platform structure" has been added (see 5.1.2.3);

i) The requirement for "functionality" has been added (see 5.2);

j) The requirements for “indication error” and “indication difference” have been changed (see 5.3.1, 5.3.2, Table 2 of the 2012 edition);

k) Added requirements for "braking force repeatability" and "vehicle braking rate repeatability" (see 5.3.3.1, 5.3.3.3);

l) The requirements for "wheel load repeatability" have been changed (see 5.3.3.2, Table 2 of the 2012 edition);

m) The requirements for "zero drift" have been changed (see Table 2 in 5.3.4, 2012 edition);

n) The requirement for "no-load variability" has been added (see 5.3.5);

o) The requirements for "off-center load error" have been changed (see Table 2 in 5.3.6, 2012 edition);

p) Added the requirement for "wheel load overload performance" (see 5.3.7);

q) The requirements for "platform" have been changed (see 5.4.1, 7.4.1 in the 2012 version);

r) The requirements for "flatness" have been changed (see 5.4.2.1, 6.3.1 in the 2012 edition);

s) The requirements for “deflection” have been changed (see 5.4.2.2, 6.3.2 in the 2012 version);

t) The requirement for "starting force of the brake plate" has been added (see 5.4.2.4);

u) The requirement for a "display device" has been added (see 5.4.3);

v) Increased requirements for the electrical system's "braking force, maximum wheel load response time," "inter-channel sampling time difference," and "voltage withstand capability" (see...) 5.4.4.2~5.4.4.4, 5.4.5.1);

w) The requirements for "grounding" of electrical systems have been changed (see 5.4.5.3, 6.5.2 in the 2012 edition);

x) The requirements for "Appearance Quality" have been changed (see 5.5, 6.1.4 in the 2012 version);

y) The requirements for “calibration device” have been changed (see 5.6, 6.7 in the 2012 edition).

Please note that some content in this document may involve patents. The issuing organization of this document assumes no responsibility for identifying patents.

This document was proposed by the Ministry of Transport of the People's Republic of China.

This document is under the jurisdiction of the National Automotive Repair Standardization Technical Committee (SAC/TC247).

This document was drafted by: Chengdu Chengbao Development Co., Ltd., Chang'an University, China Academy of Testing Technology, and Shijiazhuang Huayan Transportation Technology Co., Ltd.

Technology Co., Ltd., Xiamen Institute of Metrology and Testing, and Zhongcheng Ruice Metrology and Testing Co., Ltd.

The main drafters of this document are: Song Xinmin, Gao Jianguo, Shi Peilong, Zhao Jun, Di Jianhui, Jiang Tao, and Luo Wenbo.

This document was first published in 2012, and this is its first revision.

1 Scope

This document specifies the classification and models, technical requirements, test methods, inspection rules, marking, packaging, and transportation of flat-plate brake testing benches. Transportation and storage.

This document applies to the design, production, inspection, and use of flatbed automotive brake testing benches. Flatbed motorcycle brake testing benches are also applicable. use.

2 Normative references

GB/T 191

GB/T 13306

GB/T 13384

GB 38900-2020

GB/T 44411-2024

3 Terms and Definitions

The following terms and definitions apply to this document.

4 Classification and Model

5 Technical Requirements