MC-BSTP is a world leading bearing operating condition simulation test bench for rail vehicles. It aims to carry out relevant research on dynamics, tribology, structural parameters, assembly conditions and fault diagnosis of bearing in high-speed train, focusing on axle box bearing, gearbox bearing of high-speed train The dynamic performance and failure mechanism of motor bearing under various vibration conditions are analyzed in depth. MC-BSTP has completed the original dynamic loading test mode based on vibration, and realized the system integration of the structure and optimized the structural design under the geometric and load constraints of the vibration table. It can apply radial load (simulate train weight) and track irregularity excitation to the bearing to simulate train weight and track irregularity. The platform can test the performance of bearings with multiple fields such as temperature field, vibration, sound field and visual field, realize the test research of the bearing with known faults, explore the coupling relationship between vibration behavior and bearing service environment, and test the judgment index of the life cycle of the bearing under various stresses.
Functions:
● Performance degradation study. By simulating the evolution law of bearing damage under actual working conditions, the failure process and failure characteristics are analyzed, and then the critical vibration threshold of axle box bearing is proposed.
● Fatigue life research and reliability evaluation.
● Online fault diagnosis and life prediction.
● Performance comparison of different types of bearings (such as fag, SKF, NTN).
● Improve the weakness of the existing bearing and research new bearing products.
● Failure mechanism of surface and subsurface fatigue
● The distribution law of temperature rise in bearing and thermal elastohydrodynamic theory are studied
● Discussion on surface texture of bearing raceway and reasonable modification scheme
● The formation mechanism of pseudo Brinell indentation was studied.
Main technical parameters:
Parameters |
Value |
Parameters |
Value |
Rated sinusoidal exciting force |
200 kN |
resonant frequency |
2.5 Hz |
Rated random excitation force |
200 kN |
Countertop diameter |
650 mm |
Maximum load |
1600 kg |
Equivalent mass of moving parts |
150 kg |
frequency range |
2~2,100 Hz |
Axial stiffness axial stiffness |
120 N/mm |
maximum displacement |
51 mm |
Lateral stiffness |
25000 N/mm |
Maximum speed |
2 m/s |
External dimension |
2100 × 1430 × 1520mm |
Maximum acceleration |
1000 m/s2 |
Weight of platform |
11000 kg |
Simulated maximum speed |
250 km·h-1 |
Bearing size |
130×230×160 or 130×240×160 /mm |
