This standard specifies the technical requirements and test methods for the speed monitor of grain combine harvesters. This standard applies to speed monitors used to monitor the speed of each shaft of self-propelled and towed grain combine harvesters. JB/T 5670-1991 Field production verification comprehensive tester JB/T5670-1991 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
JB/T 5670-1991
Comprehensive Tester for Field Production Verification
Published on September 13, 1991
Implementation by the Ministry of Machinery and Electronics Industry of the People's Republic of China on July 1, 1992
Mechanical Industry Standard of the People's Republic of China
Comprehensive Tester for Field Production Verification
1 Subject Content and Scope of Application
JB/T 56701991
This standard specifies the technical requirements, test methods and inspection rules for the comprehensive tester for field production verification (hereinafter referred to as the tester). This standard is applicable to comprehensive instruments for testing the "average speed", "operating area", "slip rate", "fuel consumption" and "verification time" of various agricultural machinery.
Reference standards
GB2829
ZBY003
Technical requirements
Periodic inspection counting sampling procedures and sampling tables (applicable to the inspection of the stability of the production process) General technical conditions for instrument packaging
Product label
The tester shall comply with the requirements of this standard and be manufactured according to the drawings and technical documents approved by the prescribed procedures. 3.1 Conditions of use
The tester shall be able to work normally under the following conditions: Ambient temperature: 0~40℃;wwW.bzxz.Net
b. Relative humidity range of air: 30%~85% (no dew drops); Voltage: 12±1.2V.
The measurement range of the tester and the accuracy of each measurement value shall comply with the provisions of the following table. Measurement
Average speed
Operating area
Slip rate
Checking time
Other parameters of the tester
Working frequency: 0~30Hz;
Instrument power consumption: 15W.
Limit value
≤500000
360 000
Parts and components used in the tester (purchased parts, collaborative parts) must have a certificate of conformity. 3.4
3.5The wiring of the tester should be kept clean, firmly welded, smooth and beautiful, without false welding, to ensure reliable contact. 3.6The casing, panel and parts coating of the tester should be uniform in color, without defects such as cracks, blistering, shedding damage, etc. Test method
Approved by the Ministry of Machinery and Electronics Industry on September 13, 1991 and implemented on July 1, 1992
4.1 Conditions of use
Should comply with the provisions of Article 3.1 of this standard.
Test equipment
JB/T5670-1991
Signal generator (frequency stability not less than 10-5)Frequency meter (accuracy 0.5%)
Standard fuel consumption meter and standard fuel consumption sensor (accuracy 0.3%)Regulated power supply
Glass float
Temperature test
Put the tester in a low temperature box, adjust the temperature to -5℃, take it out after 2 hours, and restore it for 2 hours. The tester should work normally. Put the tester in a constant temperature box, adjust the temperature to 50℃, take it out after 2 hours, and restore it for 2 hours. The tester should work normally. 4.4
Humidity test
Put the tester in a humidity chamber and adjust the humidity to 85%. Take it out after 48 hours and immediately check whether the tester is working properly. Vibration test
Fix the tester on the vibration test bench and do not allow the tester to move due to vibration. The vibration frequency is 50Hz, the amplitude is 0.5mm, the acceleration is 5g, and the vibration duration is 15min. The tester should work normally after the vibration test. 4.6 Tester accuracy inspection method
4.6.1 See Appendix A (reference) for the speed slip rate counting accuracy inspection method.
4.6.2 Fuel consumption channel accuracy calibration method
See Appendix A.
: Inspection rules
5.1 Each instrument must be inspected and qualified by the factory quality inspection department before it can leave the factory, and it must be accompanied by a product certificate. 5.2
The inspection items for the device include the following: a. Appearance inspection;
b. Test the tester according to Table 1.
Carry out type test in the following cases:
Trial production of new products.
When changes in design, process and materials affect product performance.
When old products are transferred to other factories.
Products are produced again after one year of suspension.
When evaluating the quality of similar products.
Type inspection includes all test items of this standard. 5.4
The sampling plan for type inspection shall be implemented in accordance with the provisions of GB2829. 5.5
Marking, packaging, transportation and other
Requirements for complete supply of tester
One tester;
Two photoelectric speed sensors;
One five-wheel speed sensor;
One fuel consumption sensor.
JB/T5670-1991
The label of each instrument shall comply with the provisions of JB8, and shall have the following marks: a.
Manufacturer name;
Registered trademark;
Product name and model
Factory number;
Date of production.
Technical documents accompanying the instrument:
Product certificate;
b.Packing list;
Instruction manual.
The packaging of the instrument and its accessories shall comply with the provisions of ZBY003 6.4
Speed ​​slip rate counting accuracy calibration method
JB/T5670-1991
Appendix A
Tester accuracy inspection method
(reference)
Within the range of 1~100Hz, use two signal generators to generate rectangular pulses with an amplitude of 5V to simulate the sensor output of the five wheels and the left and right drive wheels respectively; use a frequency meter with an accuracy of 0.5% to monitor the frequency. The error between the tester's measured result and the frequency meter output should be less than 0.95%. See Figure A1 for the test connection diagram.
Signal generator
Comprehensive tester
Signal generator
Rate meter
Fuel consumption channel accuracy calibration method
According to Figure A2, perform the accuracy calibration of the fuel consumption channel. The measured oil flow is within the range of 0~10mL/s. The measured error between the fuel consumption sensor and the tester and the standard instrument in 4.2c shall comply with the provisions of the fuel consumption accuracy in the table. Fuel pipe
Standard fuel consumption sensor
Standard fuel consumption meter
Measured fuel consumption sensor
Tester
Additional instructions:
JB/T5670-1991
This standard is proposed and managed by the China Agricultural Mechanization Research Institute of the Ministry of Machinery and Electronics Industry. This standard is drafted by the China Agricultural Mechanization Research Institute. The main drafters of this standard are Meng Fanying, Liu Yingjian and Hong Liangchen. People's Republic of China
Mechanical Industry Standard
Comprehensive Tester for Field Production Verification
JB/T56701991
Published and issued by the China Academy of Mechanical Science
Printed by the China Academy of Mechanical Science
(No. 2 Shouti South Road, Beijing
Postal Code 100044)
1/16 Printing Sheet 1/2 Word Count 8.000
Format 880×1230
First Edition in December 1991
First Printing in December 1991
Print Quantity 1-500
Price 0.80 Yuan
Mechanical Industry Standard Service Network: http://www.JB.ac.cn1661_09 F
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