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汽车行车制动器疲劳强度台架试验方法
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QCT 316-2017
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标准编号: QC/T 316-2017 (QC/T316-2017)
中文名称: 汽车行车制动器疲劳强度台架试验方法
英文名称: Automobile service brake fatigue strength bench test methods
行业: 汽车行业标准 (推荐)
中标分类: T24
字数估计: 12,127
发布日期: 2017-01-09
实施日期: 2017-07-01
旧标准 (被替代): QC/T 316-1999
标准依据: 工业和信息化部公告2017年第2号
范围: 本标准规定了汽车行车制动器疲劳强度试验的试验相关要求和试验方法。
QC/T 316-2017: 汽车行车制动器疲劳强度台架试验方法
QC/T 316-2017 英文名称: Automobile service brake fatigue strength bench test methods
中华人民共和困汽车行业标准
QC/T 316—2017
代替 QC/T 316—1999
汽车行车制动器疲劳强度
台架试验方法
中华人民共和国工业和信息化部
1范围
本标准规定了汽车行车制动器疲劳强度试验的试验相关要求和试验方法。
本标准适用于汽车行车制动器总成。
2符号
下列符号适用于本标准。
车辆满载质量，单位为千克(kg)。
Ga:前桥(轴)满载质量，单位为千克(kg)。
Gf:后桥(轴)满载质量，单位为千克(kg)。
H:车辆满载质心高度，单位为米(m)。
Jc:试验要求的制动减速度，单位为米每二次方秒(m/s²)。
L:车辆轴距，单位为米(m)。
Mf:一个前制动器的制动力矩计算值，单位为牛•米(N・m)。
Mm:一个中桥制动器的制动力矩计算值，单位为牛 ·米(N ·m)。
r:轮胎动态滚动半径，单位为米(m)。
β1:前后制动力分配比设计值。
β2:三轴铰接式客车前轴与中桥的制动力分配比设计值。
β3：三轴铰接式客车前轴与后桥的制动力分配比设计值。的制动力分配比设计值。
3试验相关要求 3.1试验设备
3.1.1试验设备为单扭臂或双扭臂式制动器疲劳试验台或等效装置,其性能指标应满足第4章的 相关要求。
3.1.2试验设备的制动压力施加装置应满足试验过程中制动力矩控制要求，制动力矩控制误差不应超过±5%,
制动压力施加装置的升、降压速率应满足如下要求：
a)气压制动器为(1.5士0.5) MPa/s；
b)液压制动器为(25士5) MPa/s。
3.1.3指示和记录各试验参数的仪器仪表的精度等级不应低于2. 0级。
3.2制动力矩的计算 3.2.1乘用车。
前制动器按式(1)进行计算,后制动器按式(2)进行计算。
3.2.2商用车辆。
3.2.2. 1二轴车辆(含双前轴和双后桥的三轴车辆)。 前制动器按式(3)进行计算,后制动器按式(4)进行计算。
4试验方法
4.1试验准备
4.1.1试验前应根据试验需要测量制动器各部位的有关尺寸并记录。
4.1.2制动器安装到试验台上之前，应去除制动衬片(衬块)和制动鼓(盘)摩擦表面上的油脂、涂料 等其他异物。
4.1.3将制动器样品按实车安装状态安装到试验台上，相关连接螺栓/螺母拧紧力矩为产品技术文 件规定值的下限。
4.2磨合
以相当于3. 5 m/s2制动减速度的制动力矩进行制动试验，制动周期为5 s±0.5 s,制动时间不 应低于1.5 s,
制动鼓(盘)转角不宜小于15°,制动次数为5 000次。当制动力矩稳定时，可以减少磨 合次数。制动鼓(盘)转角、
制动力矩随时间变化的关系应满足图1的要求。
4.3制动器的调整
制动器磨合后，应按产品技术文件要求调整制动间隙(不包括具有间隙自动调整装置的制 动器)。
4.4疲劳强度试验
4.4.1除制动力矩相当于5. 9 m/s²的制动减速度和制动次数按产品技术文件或供需双方协商确 定外，
其余试验要求同4. 2。
4.4.2试验过程中，当制动次数达到5万次时，按如下要求进行第一次检査，此后根据需要进行 检查。
a）鼓式制动器。
1）支承部位（销孔）的变形；
2）制动蹄铁的变形及破损；
3）摩擦衬片的移位；
4）制动底板的变形；
5）安装部位的变形及松动；
6）其他。
b）盘式制动器。
1）制动衬块插入部位的变形；
2）制动钳的变形；
3）制动衬块的变形及破损；
4）安装部位的变形及松动；
5）其他。
QC/T 316-2017
QC
AUTOMOBILE INDUSTRY STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
ICS 43.040
T 24
Replacing QC/T 316-1999
Automobile service brake fatigue
strength bench test methods
ISSUED ON. JANUARY 9, 2017
IMPLEMENTED ON. JULY 1, 2017
Issued by. Ministry of Industry and Information Technology of the
People's Republic of China.
Table of Contents
Foreword ... 3
1 Scope ... 11
2 Symbols ... 11
3 Test related requirements ... 12
4 Test methods ... 13
Announcement
of Ministry of Industry and Information Technology of the
People's Republic of China
No.2, 2017
The Ministry of Industry and Information Technology approved 426 industry
standards (see the annex for standard references, names, main content and
dates of implementation) such as “Superconducting magnetic separator”
including 249 mechanical industry standards, 42 automotive industry standards,
10 pharmaceutical industry standards, 106 light industry standards, 4
metallurgical industry standards, 2 chemical industry standards, 7 electronic
industry standards, and 6 communications industry standards.
The above mechanical industry standards were published by the Machinery
Industry Press. Automotive industry standards were published by Science and
Technology Literature Publishing House. Pharmaceutical equipment industry
standards were published by China Planning Press. Light industry standards
were published by China Light Industry Press. Metallurgical industry standards
were published by Metallurgical Industry Press. Chemical industry standards
were published by Chemical Press. Electronic industry standards were
published by the Institute of Electronic Industry Standardization, Ministry of
Industry and Information Technology. Communication industry standards were
published by the People's Posts and Telecommunications Press.
Annex. References, names and dates of implementation of 42 automotive
industry standards.
Ministry of Industry and Information Technology of the People's Republic of
China
January 9, 2017
Annex.
References, names and dates of implementation of 42 automotive industry
standards
No. Standard reference Standard name
Standard
reference being
substituted
Date of
implementation
250 QC/T 776-2017 Motor caravan QC/T 776-2007 2017-07-01
251 QC/T 1051-2017 Coach car 2017-07-01
252 QC/T 1052-2017 Communication vehicle 2017-07-01
253 QC/T 1053-2017 Concrete spraying vehicle 2017-07-01
254 QC/T 1054-2017 Tunnel cleaning vehicle 2017-07-01
255 QC/T 1055-2017 Drainage and rescue vehicle 2017-07-01
256 QC/T 218-2017
Technical
specifications for
steering column
upper combined
switch of automobile
QC/T 218-1996 2017-07-01
257 QC/T 1056-2017
Technical
requirements and test
automotive dual
clutch automatic
transmission
assembly
2017-07-01
258 QC/T 245-2017
Technical
specifications for
isolated plant of
gas (CNG)
automobile
QC/T 245-2002 2017-07-01
259 QC/T 247-2017
Technical
specifications for
isolated plant of
liquefied petroleum
gas
260 QC/T 1057-2017 Car snow chains 2017-07-01
261 QC/T 1058-2017 Car fingerprint identification device 2017-07-01
Foreword
This Standard was drafted in accordance with the rules given in GB/T 1.1-2009
“Directives for standardization - Part 1. Structure and drafting of standards”.
This Standard replaces QC/T 316-1999 “Bench Test Methods of Fatigue
Strength for Automobile Service Brake”. Compared with QC/T 316-1999, the
main changes in this Standard are as follows.
- modified the standard layout format so as to comply with GB/T 1.1 layout
- listed the symbols involved in the standard separately (see Clause 2 of this
Edition);
- combined test equipment and test conditions into test related requirements
(see Clause 3 of this Edition, Clause 2 and Clause 3 of Edition 1999);
- added requirements for brake pressure increase and decrease rates (see
3.1.2 of this Edition);
- added brake torque calculation method for blue-axis plated passenger car
(see 3.2.2 of this Edition);
- added brake duration (see Figure 1 of this Edition, 3.5 of Edition 1999);
- added brake torque stabilization time (see Figure 1 of this Edition);
- deleted the chapter on test equipment and operation methods, and
combined related content into the test methods (see Clause 4 of this
Edition);
- deleted Annex A and Annex B.
This Standard was proposed by and shall be under the jurisdiction of National
Technical Committee on Automobile of Standardization Administration of China
(SAC/TC 114).
Main drafting organizations of this Standard. China First Automobile Co., Ltd.
Longzhong Holding Group Co., Ltd.
Main drafters of this Standard. Lin Dahai, Hu Shuibing, Xiao Shuibo, Shi
Ruikang, Wang Shanghua.
Versions of standard substituted by this Standard are.
Automobile service brake fatigue
strength bench test methods
1 Scope
This Standard specifies test related requirements and test methods of
automobile service brake fatigue strength bench test.
2 Symbols
The following symbols apply to this Standard.
Ga. vehicle full load mass, in kilograms (kg).
Gf. front axle (shaft) full load mass, in kilograms (kg).
Gr. rear axle (shaft) full load mass, in kilograms (kg).
H. vehicle full load center of mass, in meters (m).
Jc. brake deceleration required by the test, in meters per square second (m/s2).
L - vehicle wheelbase, in meters (m).
Mf. brake torque calculation for a front brake in cattle/meter (N•m).
Mr. brake torque calculation for a rear axle brake, in cattle/meter (N•m).
r. tire dynamic rolling radius, in meters (m).
β. front and rear brake force distribution ratio design value.
β1. design value of brake force distribution ratio between front axle and middle
axle of triaxial dumpling passenger car.
β2. design value of brake force distribution ratio between front axle and rear axle
of triaxial dumpling passenger car.
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