Running attrition testbed compatible with bearing grease uniformizing and non-axle box state idle load of wheel set

Abstract

A running attrition testbed compatible with bearing grease uniformizing and a non-axle box state idle load of a wheel set comprises a platform assembly, a driving device, a driving wheel set, a driving wheel set supporting device, a wheel set cutting mechanism, a process axle box (the wheel set with a bearing and the wheel set with no bearing), a gear box angle measurement device, a coupling adjustment device, a gear box lifting and fixing device, a process axle box fixing device and a hydraulic loading device. Whether temperature changes of an axle box bearing and a gear box bearing are abnormal or too high can be automatically detected, and the temperature difference of two axle box bearings at two ends can be automatically detected. A running attrition curve, a temperature curve and a running attrition result report of a running attrition test can be recorded and printed in real time.

Description

technical field [0001] The invention relates to the field of a test bench for a gear box of a rail vehicle, in particular to a test bench compatible with grease equalization of bearings and a wheel set in a non-axle box state with no load and pressurized running. Background technique [0002] At present, due to my country's implementation of the policy of greatly increasing the speed of railways, the running speed of rail vehicles in my country has been greatly improved, which has also led to the rapid development of high-speed train technology. The maximum speed of high-speed trains already in operation has reached 350km / h, the maximum speed of the newly developed high-speed train set is close to 600km / h. However, the increase of train speed and the increase of vehicle axle load make the vibration between the vehicle and the track intensified, and the safety and stability of vehicle operation are prominent. As one of the important parts of the bogie of high-speed rail vehic...

AI Technical Summary

Problems solved by technology

[0003] At present, there are many ways of gearbox running-in test, some of which are directly assembled on the bogie for running-in, this method is very complicated to disassemble and install when there is a problem with the gearbox system; in terms of axle support devices; End-driven axles are used for running-in. The shaft-end-driven running-in method is suitable for occasions with limited space. Although medium-speed running and testing can also be carried out, but no-load tests are often carried out, which cannot simulate the force of the axle box gear in the current vehicle operation. , and it is easy to damage the shaft end when the shaft end is driven, and it is not suitable for high-speed running; in terms of gear box support, bottom bracket support is often used, which is convenient for hoisting and even distribution. This method cannot guarantee the level of the center line of the gear box Overlapping, easy to lose stability at high speed, easy to damage the gearbox

Therefore, in order to solve a series of technical problems such as the complicated disassembly and installation of the test bench when the diameter of the existing wheel set changes, the damage to the axle shaft diameter, the inability to adjust the loading pressure, and the inability to quickly repair the driving wheel set after wear, it is necessary to design and develop a compatibility comparison Strong train gearbox running-in test bench, used to detect the running-in condition of the gearbox in the no-load state and loaded state, so that the gearbox can meet the technical requirements of the existing high-speed trains

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