GB/T 11798.2-2001 Technical requirements for the verification of motor vehicle safety testing equipment Part 2: Technical requirements for the verification of roller reaction brake test benches
Some standard content:
1Cs 43.020:43.180
National Standard of the People's Republic of China
GB/T 11798. 1--11798. 92001
Motor vehicle safety testing equipment
Technical requirements for verification
Molor yehiele safety testing equipmentTechnical requirements of verificationIssued on April 29, 2001
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
Implementation on December 1, 2001
GB/T 11798.2—2001
This standard is a revision of GB1798.21SR9. In view of the fact that G7258-107 will expand the scope of national road motor vehicles, GB/T11798-20178 will be revised by you
) The general title of this system will be improved by the emergency technical conditions for automobile safety testing equipment inspection and testing equipment of motor vehicle enterprises according to the regulations? Expanded application scope: (/T11798.7, GB/T11798.8/:1733. Part of this standard is related to the second part of the standard. The main differences of this standard 5B-1798.3·1S89 are: 1. Expanded application scope: Applicable to the verification of roller reaction type dynamic table; 2. Added verification of roller parallelism, sand support depth, zero point displacement, daytime missing and current lying system effectiveness. 1. Braking force indication difference is set in, and braking force indication estimation is adjusted according to relevant laws and regulations and standards; 4. Added braking method standard in the verification method of indication difference The test methods are specified to adapt to the development of the inspection technology. Fifth, the electrical system safety requirements and corresponding inspection methods are added to ensure the safety of various components. C118 motor vehicle safety inspection and verification technical conditions include the following parts under the general title: Part 1 (B/T1178.2001), Slide plate type vehicle attachment test and verification technical plan, Part 2 (B/T1178.2-201), Roller brake test bench verification technical conditions Part 3 (B/T11708.3-2001): Gasoline gas analyzer verification technical code: Part 1 (B/T11798.1-2 301): Simple speed test bench calibration technical requirements: Part 5 (ie Gn/T1176.52001: Paper-based test bench calibration technical requirements; Width part (ie 11798, -2301 Symmetrical light detection variable calibration technical system: Side 7 parts (ie (B11708.?: 21): Axle (wheel) instrument calibration technical requirements; Potential% part (mail (H/11798.-2501> Motorcycle wheel deviation tester calibration requirements Part 9 (GB/T11796.2251), Parallel brake test bench calibration technical requirements are not standard A urine standard downgrade,
This standard is for users to implement the F start This standard replaces R11798.2-148! This standard is issued by the Ministry of Public Security of the People's Republic of China. This standard is issued by the Traffic Management Bureau of the Ministry of Public Security. The responsible party of this standard is: Chengyi Automobile Testing Equipment Research Institute: This standard is promoted by: Public Security Traffic Science Research Institute. The main drafters of this standard are: Zeng Xianfang, Zhang Keliu, Man Dajun, Yue Weixing, and Yang Yongnian. This standard was first published in 1.
1 Scope
National Standard of the People's Republic of China
Technical Conditions for the Verification of Motor Vehicle Safety Testing Equipment Part 2; Technical Conditions for the Verification of Roller Reaction Brake Test Benches
Motor Vehicle safety legting test benchTechnical requirements of verification-Part 2:Technical requirements of verification roller reaction brake test bench for rear brake tekterCB/T11798.220G1
#GB11798.21965
This standard specifies the technical requirements and verification methods for the simple reaction brake test bench (hereinafter referred to as the simple reaction brake bench). This standard is applicable to the verification of the cylinder reaction brake test bench for motor vehicle safety inspection. 7 Standard References
The referenced texts are those contained in the following references. The referenced texts are valid for the purposes of this standard and are valid for the time being. All standards are subject to revision. The parties using this standard shall discuss the possibility of updating the following standards: T57.7--198 Basic Safety Standards for Road Traffic Safety 3 Definitions
This standard defines the following.
3.1 Rated load
The maximum load allowed by the brake load. 3.? When the vehicle is braking, the reverse force transmitted between the wheel and the roller is measured. 3.3 Wheel braking force indicator sight a luca f wheel braking torque The effective indication value that the brake rig can display. 3.4 Equivalent system efficiency is the test capability of the brake rig. It is the ratio of the maximum braking force that the brake rig can measure to the wheel load:
3.3 Value between values of diierence Jorro The absolute value of the left and right brake indication error. 4 Technical requirements
4.7 General requirements for external accessories
4.1.1 The brake rig should have a clear nameplate indicating the equipment name, equipment model, rated load, factory number, and manufacturer! Name, date; H. General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China Approved on April 29, 2001, Implementation date: December 1, 2001
GE/T11798.2-2C01 Www.bzxZ.net
4.1.2 All parts such as switches, sockets, terminals, etc. shall be clearly marked with symbols or signs. The symbols and signs shall comply with the provisions of relevant standards: the operation of the parts shall be flexible and reliable. There shall be no movement or stagnation. 4.1.3 For pointer-type meters, the dial shall be smooth and adjustable, without bending, and the rotation shall be smooth and flexible. There shall be no jumping or stagnation. For digital display meters, there should be no distortion that affects the numbers. The digital indication should be within 5 seconds and the indication retention time should be no less than 8 seconds. 4.1.4 The components that make up the brake medium should be complete, correctly installed, connected and positioned properly, and the moving parts should move smoothly and without lag.
4.1.5 The meter should not have any defects that may damage the wheels or affect the measurement. 4.2 Safety of electrical system
4.2-1 The brake platform should have a protective terminal and there should be a clear connection mark next to the terminal. The protective grounding terminal is reliably connected to the protective grounding point through a special yellow-green conductor. The rated operating voltage of the brake system shall not exceed KV as specified in B87.7-1986, and the insulation resistance value shall not be less than: MD: 4.3 micro-
4.3.1 The axis of the roller shall not be parallel to the waste line more than tmm; 4.3.2 The middle section of the roller shall not exceed 1.5% of the total length of the local structure, accounting for 50% of the total length. Note 1: D——Stick sand falling standard body straight cultivation nr., 4.4 Seasonal position error related to zero point ticket shift
4.4.1 Zero signal error does not exceed = 0.2%F.5) 4.4.2 Zero point drift, 30 mim is not more than 0.2% (F.9 Note 2.FS——To show full benefit, the terminal number of benzene cross \full cnle\ 4.5 indicates the error and the difference between the indications
4.51 Indication error: not more than = 4,00: 75G or 5 years. Note 3
1 Fixed medicine
2 Fixed not 30k dynamic, when the energy control force is greater than 0. 0:: G, the indication error water is allowed to exceed three 22. . 4.5.2 The difference between the bearing values shall not exceed 0.095456 or 5, and the difference between the bearing values shall not exceed 0.015G. The display value is 22.5N. 4.5.3 For motor vehicle inspection systems equipped with printing devices or installed on computer systems, only the printed values or online computer display values shall comply with the requirements of 2.5.1 and 4.5.2. 4.6 The braking force of the belt network shall change by 1.>, and the display value shall not change. 4.7 When the equivalent adhesion coefficient of the left and right parts of the system is not less than 0.65, and the difference between the equivalent adhesion coefficients of the left and right parts is less than 0.05,
5 Verification method
51 Environmental conditions
5. 1,1 Short-term: 0-10°C,
5.1.2 Sample temperature 5.
51.3 Voltage 10% of rated voltage.
5.1.4 The test should be carried out in an environment without any visible pollution, noise or interference. 5.2 The instruments for calibration are shown in Table 1: Length measuring vernier scale Inner diameter scale Power screw electric meter (megameter) Special support Code-group Horizontal type Braking force tester Mechanical jack GH/T 11798. 2—2001 Measuring range not less than 100M 3. 1 kg. 3. 2 kg-0. 3 5y. kg-2 kg. 5 kz. 10 kg+20 kg.
1 Method 1, Fang Ran two-bit board saw cross music finger select one of the month of impact, 2k taste code of the effectiveness of the test (i
where: for -
brake table diagram I research -N
: active simple vertical.MT1
special month plus the total length of the river pole, mm
fast fixed point training speed.m
measuring tools must be qualified by the metrology department and used within the validity period. 5. 3 calibration standards
5.3-1 turn on the power: the single throw change appears hot: the instrument should stop working, 5.3.2 instrument bone"\standard\file,
6.4 appearance change a share of requirements for drug inspection
position 0.0:mm
division 0.01mm
c.c2 mm1/m
Through the inspection of the system, the performance and general requirements of the various departments should be in accordance with the provisions of 4.1, 5.5 electrical system safety hazards
C kg-2 +:2 kg12 5.5.1 Manually check the grounding terminal and protective grounding status of the brake platform. They should comply with the requirements of 4.2.1. 5.5.2 Battery resistance test: The brake platform is disconnected from the grid power supply, and the central switch is connected: Use a resistance meter to test between the corresponding terminals of the brake platform and the grid power supply wire and the casing and protective grounding. The test should comply with the requirements of 4.2.2. 5.6 Verification of the brake system
5.6.1 The parallel leakage wires of the rolling element are parallel to the open roller. Verification method is as shown in Figure 1. At the two positions where the inner diameter of the roller is 1, the height of the spacing between the teeth of the two corresponding rollers is measured respectively. The force is: A According to the formula (2 mirror axis parallel 22
Axis parallel bed, L
Yiyin Friendship
GB/T11/98.22001
The distance between the two ends of the collar is measured, m. The distance between the two outer sides of the roller is the distance between the two inner and outer sides. The distance between the two inner and outer sides is m.
Standard, the head is guaranteed to be the same as the inner side. If necessary, the heat can be raised to the bottom of the roller: 2. The diameter of the roller is a minute ruler
Sand-bonded or other surface roughened rollers! . The calibration method is as shown in the figure. Use the inner diameter of the lower minute ruler to stick to the two rollers. The distance between the two ends of the collar is obtained by using the standard caliper. The diameter of the two ends is calculated according to the formula 3:
\I(B, +4) —(. +2
The outer shafts of the two rollers must be measured, mm
F, the distance between the inner shafts of the two rollers is nirm. The diameter of the outer shaft of the roller is mm:
The diameter of the inner shaft of the roller is rmL\a: Measure the parallelism of the two sets of roller shafts separately, and both should comply with the provisions of 4.31. 1. Sticky plan; 2-7 feet
5.6.2 Verification of local grinding of sandpaper roller surface 12
5.6-2.1 Verification with vernier caliper
GB/I 11798.2 2001
Long-term use of standard calipers, respectively, each case with the entire length of the middle of the mountain on the surface of the average Lu diameter, the minimum text diameter, the use of formula (4 calculation of the loss. It should comply with the provisions of 4.3.2.
Where:||tt| ... After the speed of the screen is set, record the zero deviation value of the instrument: this value is the zero point difference, and then stop the motor and start the second test. After three tests, the motor should be in compliance with the provisions of 4.1.1. 5.2 When the motor stops, record the zero deviation value of the instrument: this value is the zero point difference. The zero point difference value of each consecutive test should meet the requirements of 4.4.2. 5.8.1 Cut off the power supply of the load-type thrust type (Figure 3) (Figure 4) optional, the method is as shown in 3, install the special load-leveling solid on the deep cylinder, and adjust the horizontal balance. Method 2 As shown in 4, install the small brake tester on the micro-simple, install the sensor, jack, etc. on the corresponding position, adjust it, and for the dynamic platform that cannot be loaded on the first floor, use the new self-designed model! Only, three connections are missing or. The installation and operation shall be carried out in accordance with the provisions of the equipment instruction card. The standard is: 2 calibration rainbow 3 let the skill: 4 balance money; flow chart GB/T11798.2-2001 1. Standard setting of the brake sensor you compare the frequency of the original wave 4 5.8.2 connection is about 1.5%. 3.5%. 7%. 17%, 25 Xing, 3 5% of the test points can be taken by the method of calculating the mass value of the H code of each test site according to formula (5): and the selected single quantity from the given magnetic code in 1 is close to the calculated value but as the actual magnetic code, according to the variable wind volume value of the uploaded code, the formula (5) is used to calculate the nominal value of the braking force of the test point:
武, m
The first: The test point requires the calculation value of the sand code. kg = 1.2.3. Report diameter,
The braking value of the first test point is the pre-selected value, N
The force length of the turning device, mm
g: The acceleration mass of the calibration location, n/a"F
Where: mr
The first/test point adder is used to recognize the actual position of the crane, : The nominal value of the braking force at the first test point, N. F
When used as compensation, calculate the required adder load at the test point using formula (7). F
The first test point is as required.
5.8.3 Test the test points as specified in 5.8.2. Increase the brake force level or then gradually increase the brake force level to a large level, and then gradually increase the brake force level to a small level. Repeat three times, read the brake force level indication of each test point and calculate the arithmetic mean value. 5.4 Calculate the value of each test point: It meets the requirements of 5.1. Calculate the brake force level indication error (H).
GB/T 11798.7—2001
×Juu%
Where,,——Relative indication error of the first test point brake! Also,,: Arithmetic mean of the braking force indication of the auxiliary test point,N Absolute indication error of the braking force is calculated by the formula
4. = X, - F.
Where: 4,---, the indication error of the test point brake or force.N. 5.8.5 Calculation of the indication error of the braking force of each test point shall comply with the provisions of 4.5.2. When using the cabinet to provide the difference, the indication error shall be calculated according to 18n e&e
Wherein:
The indication interval when the first/test point is expressed by phase limit difference: The indication error when the first: test point left wheel braking force is expressed by phase limit difference: The indication error when the first: test point right wheel braking force is expressed by phase limit difference: The indication error when the first: test point right wheel braking force is expressed by phase limit difference: The indication error when the first: test point right wheel braking force is expressed by phase limit difference: The indication error when the first: test point left wheel braking force is expressed by phase limit difference, N: 4| |tt||First: Test point absolute indication error of wheel brake. 5.9 Verification of the test point
Report 5.8.1 method Install the monitoring device on the appropriate position of the brake, select the maximum test load according to the braking load equivalent to 17% of the fixed load, and record the increase of the indication value after the indication value is determined. Then, record the increase or decrease of the indication value. The increase or decrease of the indication value should be less than 4. The standard is. 5.10 When the coefficient of this appendix is verified
5.10.1. Select a vehicle with a non-rotating axle load of at least 7% of the load on the brake rig as the test vehicle. The braking performance of the test vehicle's wheels must be good: the left wheel's brake pads should be relatively flat, the wheel treads of each wheel should be relatively new, and the air pressure should be adjusted to the factory-determined value. 5.10.2 Measure the left wheel's non-steering wheel on the test vehicle. 5.10.3 Place the non-steering wheel of the test vehicle in front of the brake rig that meets the requirements of 1.1~4.. To prevent the occurrence of abnormalities, take the following measures:
6.702 According to the instantaneous operation of the corresponding rig, the driver should start the vehicle and the parking system quickly. The wheel should be on the ground and the maximum braking force of the left wheel should be measured. Repeat six times and take the average value as the braking force measurement value. 6.10.5 Compare 12) (13) to calculate the equivalent coefficient, and calculate the difference of the equivalent coefficient of the left and right parts according to formula (11). All should comply with the provisions of 4.7: side light risk system + side equivalent drop system: left small measured value, N right sword moving J continental value, N, left wheel quantity of the same age vehicle, N; all wheels N: HT11798.2-2DC1 or in: - brake platform in, stone two parts of the equivalent coefficient difference. 6 Secret record Fill in the verification record during verification, its format and record 41 standard verification> table A! .13
Equipment name
Study inspection unit
Immersion equipment type
Quality specification
Safety
Study design and
External decisions
System effect and
When
Guarantee
Zero vortex rise
Zero point displacement
Type dynamic platform
Braking force
GR/T11798.2—2031
Appendix
(Standard appendix) (Request)
Roller stress brake inspection and verification record
This A1 soluble tube force brake inspection station is completed according to the record system
Huanguang single temporary
Issuance number
Pass the ancestral place
Factory export date
Exchange and propose to our car dry school
Dingjing design
Dong issued the completion society
Juemei electric
Instrument shows direct
Planning power
Only show others
Verification date
Technical age
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