JB/T 9391-2001 Technical requirements for collision test benches JB/T9391-2001 Standard download decompression password: www.bzxz.net

ICS18.064
Machinery Industry Standard of the People's Republic of China
JB/T9391-2001
Collision Test Bench
Technical Conditions
Specificationsfor bump test machines2001-12-04Published
China Machinery Industry Federation
2002-03-01Implementation
JB/T 93S-2001
This standard adopts the national standard IE68-2-29:19B7 (Environmental test Part 2: Test method Test Eb: Requirements for test load.
This standard is a revision of ZBN73003-90 <Technical requirements for test benches>. The following technical modifications were made to the original standard during the revision: Added the preface: Added the reference introduction in Chapter 2; Revised the peak detection speed, pulse duration and corresponding nominal speed change of the three levels of 5016ms; 50/511m and 1mg11m in Table A1. Newly added the peak detection speed, pulse duration and corresponding nominal speed change of 50ms.6ms. B The frequency characteristics of the measurement system in the 11m level measurement system frequency characteristics requirements: some of the standard provisions have been shortened and revised. This standard will take effect from now on, replacing ZBN73003-90, ZHN73003-90 and the same time. The appendix A and appendix B of this standard are both records of the standard, and the standard is proposed and managed by the National Technical Committee for Standardization of Testing Machines. The originating unit of this standard: Suzhou Testing Instrument Factory, Changquan Testing Machine Research Institute. The main drafters of this standard: Xu Liyi, Wang Xuezhi. This standard was first revised and issued in 1990 as ZBN73003-1990. 1 Specifications
Mechanical Industry Standard of the People's Republic of China
Technical Conditions for Bump Test Benches
Specificatiors for bump testimg machires JB/T 9391—2001
ZBN73003-90
This standard defines the basic parameters, technical requirements, test methods and inspection rules of the collision test bench. This standard is specifically for standard test benches with a load of less than 500kg (hereinafter referred to as collision test benches). 2 Reference standards
The provisions contained in the following standards are all included in this standard through reference in this standard. The version indicated in this standard is effective at the time of publication. The standard will be revised and the current version of this standard will be used. The parties involved should explore the possibility of using the latest version of the following standards. GE.T2611-t992 Testing machine applicable design technical requirements JBIT5147-1992 Testing packaging, packaging marking, pig transport technical requirements 3.1 The manufacturer shall give the following basic parameters in the relevant documents of the chain transport meeting: namely, maximum load: b speed:
recording impact duration:
d number of operations:
ball impact weight frequency.
3.2 light to negative composition:
b total:
heart auxiliary equipment.
4 Technical requirements
4.1 The equipment should be able to work normally under the following conditions: a) The temperature should be between 5°C and 35°C, and the relative humidity should not exceed 90% (25 hours); it should be a corrosive medium and a strong power source; c) the power supply voltage should be within ±10% of the rated voltage. 4.2 Avoidance of shock and vibration
Within the specified working range, the control station should be able to produce a half-sine pulse waveform similar to the nominal acceleration line indicated by the trace in the figure, and the actual pulse waveform should be within the tolerance range indicated by the two lines in the figure. Approved by China Machinery Industry Federation on December 4, 2001 and implemented on March 1, 2002
JB/T 9391—2001
Integral 1.5D
Tolerance of the moment before the ball impact
Impulse energy
Customer difference
A-Nominal impulse return
DNominal pulse duration (standard pulse) Figure 1 Pulse waveform (half-sine) and tolerance range 4.3 Tolerance of pulse velocity variation
The maximum tolerance of the pulse velocity variation of the impact platform should be ±20% of its nominal value. The nominal value is shown in Appendix A (Standard Appendix). 4.4 Transverse feed ratio of the platform
The platform is within the specified working range, and the transverse movement ratio of the platform surface is Not more than 30% (peak acceleration ratio of ball impact). 4.5 Number of continuous collisions
The number of consecutive collisions of the speed avoidance platform is greater than 500 times. 4.6 Error of indication of speed avoidance repetition rate
Within the pulse rate range specified in the contract, the maximum allowable indication error is ±10%. 4.7 Appearance quality
The appearance quality of the speed avoidance platform shall comply with the requirements of Chapter 8 of H/T2611-1992. 4.9 Transport resistance
Under packaging conditions, the speed avoidance platform should be able to withstand the transport chain test without damage. After the test, the collision platform should still meet all the requirements of this standard without adjustment (excluding normal adjustments allowed by the damage order). 4 .Product working procedure
The impact table should give working noise.
5 Inspection method
5.1 Test instruments
Company) Impact measurement system (including accelerometer, charge amplifier, high and low pass filter, multiplier and integrator; or impact measurement with the above functions), its reliability should meet the requirements of Appendix (Appendix of the standard); 6 Three-axis accelerometer, each steering lateral sensitivity is not more than 3%:) Stopwatch with a graduation value of 0.1;
d) Pulse sound level meter with an accuracy of dB;
e) Calcitonin thermometer with a force component of 0.1,
5.2 Test negative peak
Test The test load shall be a symmetrical body made of metal material. Its mass, center of mass height and distance from the center of the test object shall comply with relevant regulations. 2
JB/T9391—2001
5.3 Test of peak velocity change, corresponding impulse duration and impulse shape 5.3.1 Test conditions
Under no-load or full-load conditions, the velocity meter shall be fixed at the center of the workbench or the center of the load, and its output transmission and impact measurement system shall be used.
5.3.2 Test ball
In the specified working range, measure the peak acceleration of each gear, the duration of the corresponding pulse and the basic impulse wave for several times, and the two measurement results shall meet the requirements of 42.
5.4 Test conditions
Time 53.1,
5.4.2 Test method
In the specified working range, measure the speed change corresponding to the peak acceleration of each gear and its corresponding pulse duration in turn. The actual speed change of the magnetic pull pulse is calculated by formula (1): GAV-AVax100%
Where: AF-actual speed change of magnetic pull pulse, ms. -nominal speed change of the magnetic pull pulse, 9. The calculation of the speed change should be from 0.4D before the pulse to 0.1D after the pulse (see Figure 1). The result should meet the requirements of 4.3. 5.5 Verification of transverse motion ratio
5.5.1 Test system
In the empty or full state, fix the triaxial accelerometer at the center of the table, and connect its output to the impact measuring system. 5.5.2 Test methodbzxZ.net
In the range of the specified velocity and corresponding impact holding time of the impact chamber, measure the peak acceleration values ​​of the pulse in the three directions respectively. The transverse motion ratio T is calculated according to formula (2):
Varta,
Where: A,AY is the peak acceleration in two perpendicular directions perpendicular to the main impact direction,; Az is the pulse value acceleration in the direction of the impact track,. Its result shall meet the requirements of 4,4.
.5.6 Test of the number of continuous collision avoidance
The collision platform is fully loaded, and within the specified pulse repetition rate range, a commonly used reduced acceleration and corresponding pulse duration are continuously collided for more than 5000 times. The platform should be able to work normally. 5.7 Test of the indication error of the collision repetition rate Evenly select more than four repetition rates within the range of the platform repetition frequency, and measure with a stopwatch. The result should meet the requirements of 4.6. 5.8 Test of appearance quality
Test according to the requirements of Chapter 8 of GB/T2611-1992. 5.9 Test of transport shear
The platform is tested in a simulated automobile transport mode or in a field vehicle test under loaded conditions. The simulation conditions are: 4 Road surface: natural road surface of a third-level highway, not including stone roads and dirt roads: b) Mileage difference: 200lom: c) Vehicle speed:30 km/h~40 km/h,
The test results shall meet the requirements of 4.8.
5.10 Determination of working noise level
B/T9391—2001
The noise level of the control tower shall be measured by pulse sound level (4-weighted) at a distance of 1.0m from the image of the control tower and 1.5m above the ground within the specified pulse repetition frequency range and at its allowable maximum peak acceleration and corresponding impulse duration. 6 Inspection rules
Inspection of control units is divided into factory inspection and type inspection: 6.1 Factory inspection
The factory inspection of control units shall be carried out according to the requirements of 4.2.4.3, 4.4.4.6, 4.7, 4.9 and the relevant tests. Only after passing the inspection can the units be approved for production and accompanied by a product quality certificate. 6.2 Type inspection
62.1 Type inspection shall be carried out in the following cases: New product trial production or trial production of old products in factory: 5 After the production is stopped, the structural design, materials and process have been greatly changed, which may affect the performance of the products: c) When the product is discontinued for the first time:
When the batch and mass production are carried out, a regular inspection shall be carried out every year. 6.22 Type inspection items are from 4.2 to 49 days. 6.2.3 The whole batch inspection shall be carried out from the batch of finished products under the condition of one machine, and the sample quantity shall not be less than 2 sets. 6.2.4 If there are 0 or more unqualified products in the sample after inspection, the inspection batch shall be deemed as a qualified batch; if the number of unqualified products is greater than 1, the inspection batch shall be deemed as an unqualified batch. 7 Marking and packaging
7.1 Marking
7.1.1 A nameplate shall be fixed at an appropriate position on each unit. 7.12 The product nameplate shall contain the following contents:
c) Main technical parameters;
d) Manufacturer's name;
Date of manufacture and serial number.
7.1.3 The delivery and receipt marks and the packaging storage and transportation graphic marks of the magnetic selector shall comply with the provisions of 5.1 of JB/T6:47-1992. 7.2 Packaging
7.2.1 The magnetic selector shall be a moisture-proof, anti-corrosion and dust-proof composite protective packaging. 7.22 The packaging of the ground connection device shall comply with the provisions of 4.3.3, 4.4.2.4.4.4 and 4.4.6 of JB/61471992. JET 9391-:2001
(Appendix of the standard)
Peak acceleration, pulse duration and corresponding nominal acceleration change A1 Peak shear velocity, pulse duration and corresponding nominal velocity change Total acceleration ()
Vehicle holding time (D)
The corresponding standard change
The standard characteristics of the measurement system are shown in Figure B1. -43
Insurance Express Limited
J8/T 9391—2001
(Standard Record)
Frequency characteristics of measurement system
Low load and high load frequency
Figure BI frequency characteristics of the system
+24GB energy quality process
Failure:
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