Integrated test device for rail bearing of rail locomotive

Abstract

The invention provides an integrated test device for a rail bearing of a rail locomotive. The device is composed of a mechanical supporting main body, a driving system, a tested wheel rail-bearing-axle, a loading system and a testing system. According to the invention, radial load, axial load complex load, wheel speed difference of left and right wheels and wheel rail fault simulation during steering of the rail locomotive vehicle are realized, and wheel rail-bearing-axle integrated vibration test is realized at the same time, which is more in line with actual working conditions.

Description

technical field [0001] The invention relates to the field of rail vehicle test equipment. Background technique [0002] Rail rolling stock undertakes the tasks of railway public transportation and inspection and testing, including EMUs, passenger cars, trucks, subways and other mobile equipment, which play an extremely important role in the national economy; while the driving and steering systems of rail vehicles rely on the interaction between wheels and rails, At the same time, the wheels rely on the axles and bearings to support the running and steering of the rolling stock. Therefore, the wheel-rail bearing system plays an important role in the safe running of the rolling stock. It needs to be tested and assessed in engineering applications. [0003] At present, although some test devices for rail locomotive vehicle wheel hubs can be mainly divided into simple component tests, such as bearings (a high-speed train axle box bearing test based on rolling vibration CN2016105...

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Problems solved by technology

[0003] At present, although some test devices for rail locomotive vehicle wheel hubs can be mainly divided into simple component tests, such as bearings (a high-speed train axle box bearing test based on rolling vibration CN201610575039, ultra-high-speed train bearing comprehensive performance test bench CN201410654838, a Railway freight car bearing curve loading test bench CN201810123158.6, rolling bearing comprehensive loading test bench CN 201410191242.3), axle (high-speed train axle damage identification test bench based on vibration response CN201810786109), wheel (independent rotating wheel active guidance model test bench CN201810854621) Bogie wheels (variable gauge bogie wheel set track performance and reliability test bench CN201810813912) and interacting wheel rails (high-speed wheel-rail relationship reliability test bench CN201610195503), gearbox (high-speed train gearbox no-load running combined test bench) and axleboxes with complex systems (high-speed train wheel-to-axlebox device test bench CN201310733003), most of the above-mentioned test devices are for single or several components such as specific bearings, axles, wheel rails, etc., and cannot be truly simulated and used for track research The interaction between the rolling stock wheel-rail-bearing-axle, etc., such as the interaction between the wheel-rail and the vibration transmission relationship between the bearing-axle, etc. In addition, the radial load of the bearing cannot be effectively realized, and the axial load is in line with the load simulation, especially not Effectively simulate the state of locomotives when turning in curves (the difference in speed between the inner and outer wheels leads to sliding between the rails and the axial load on the wheel-rail bearing axle when turning), so there is a difference from the actual locomotive motion conditions, so the current Some key component tests such as wheel rails, bearings and axles are still carried out on the overall test bench of rolling stock, while the overall test bench built by Sifang rolling stock has a complex structure and a large overall power, which leads to high energy consumption, so a track is needed Rolling Stock Wheel Rail-Bearing-Axle Integrated Test Device

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