BAIJIAN - Third party testing organization
Test items
Construction speed、 axle weight、 self weight、 fixed wheelbase、 wheel diameter、 journal center distance、 side bearing spacing、 central spring transverse spacing、 axle box spring transverse spacing、 braking ratio primary vertical stiffness、 primary positioning stiffness、 primary vertical damping、 secondary vertical stiffness、 secondary lateral stiffness、 secondary vertical damping、 secondary lateral damping、 minimum curve radius、 fatigue reliability、 wheel rail wear and wheel rail force Noise level、 high-frequency vibration absorption Scope of application: Two axle bogies、 three axle bogies、 multi axle bogies、 pull plate bogies、 pull rod bogies、 swivel arm bogies、 frame welded bogies、 three piece bogies、 quasi frame bogies、 etc Relevant Testing Standards
GB/T 40075-2021 General Technical Conditions for Urban Rail Transit Six Axle Articulated Bogies and Light Rail Vehicles
GB/T 39425-2020 General Technical Conditions for Permanent Magnet Direct Drive Bogies of Urban Rail Transit Vehicles
GB/T 25024-2019 Locomotive and Rolling Stock Bogies and Freight Car Bogies
GB/T 3367.3-2018 Vocabulary for Internal Combustion Locomotives Part 3: Vehicle Body Bogies and Braking Devices
GB/T 36225-2018 Silver Bright Steel for Bogies
GB/T 33972-2017 Hot Rolled Steel Plates and Strips for High Speed Train Bogie Frames
GB/T 25332-2010 Technical Conditions for Locomotive Bogies
GB/T 25024-2010 General Technical Conditions for Railway Freight Car Two Axle Bogies
DB43/T 1867-2020 General Technical Conditions for Toothed Rail Bogies
TB/T 3316-2020 Locomotive Bogies and Rolling Stock Bogies and Multiple Unit BogiesRelated IntroductionThe vehicle body is located on a bogie、 which supports the vehicle body. The bogie carries the entire weight of the vehicle body and transmits various loads and forces from the vehicle body to the wheel tracks、 or from the wheel tracks to the vehicle body. When the vehicle begins to enter the curve at a certain speed、 the outer wheel rims of the front wheel pair come into contact with the inner surface of the outer rail、 squeezing each other to generate guidance force、 and the guidance torque is caused by the guidance force、 causing the bogie to rotate relative to the line Precautions for testing report
1. No report& Ldquo; Special seal for research and testing; Rdquo; Invalid official seal、 invalid report without anti-counterfeiting QR code 2. The copied report was not re stamped; Ldquo; Special seal for research and testing; Rdquo; Or the official seal is invalid 3. The report is invalid without the signature of the main inspector、 reviewer、 or approver 4. The report is invalid if altered 5. If there are any objections to the testing report、 they should be raised within 15 days from the date of receiving the report. If the report is overdue、 it will not be accepted
The above article is a partial list. For more testing needs and details、 please consult the online consultant of the free consulting agency: 18501763637
The third-party testing agency of Baijian provides pesticide testing、 fertilizer detection、 pesticide residue testing、 food testing、 drug testing、 toxic and harmful substance testing reports、 etc. Customers who require relevant testing services can leave an online message or directly contact us at 18501763637
Function of testing report:
1. Project bidding: Issue authoritative third-party CMA/CNAS qualification report
2. Online e-commerce platform entry: Quality inspection report recognized by major e-commerce platforms 3. Used as a sales report: issuing legally effective testing reports to make consumers more confident 4. Papers and research: Provide professional personalized testing needs 5. Judicial services: providing scientific、 fair、 and accurate testing data 6. Industrial problem diagnosis: Verify the troubleshooting and correction of industrial production problemsinspection and testing process:
1. Telephone communication and confirmation of requirements
2. Recommend solutions and confirm quotations 3. Mail samples and arrange testing 4. Progress tracking and result feedback 5. Provide reports and after-sales service 6. If urgent or priority processing is requiredTesting and testing characteristics:
1. The testing industry is fully covered、 meeting different testing needs
2. Fully cover the laboratory and allocate localized testing nearby3. Engineers provide one-on-one services to make testing more accurate
4. Free initial testing、 with no testing fees charged
5. Self service order delivery for free on-site sampling
6. Short cycle、 low cost、 and attentive service 7. Possess authoritative qualifications such as CMA、 CNAS、 CAL、 etc 8. The testing report is authoritative and effective、 and is generally used in China