Bearing clearance measuring device and measuring method

Abstract

The invention relates to a bearing clearance measuring device and measuring method, and the measuring device comprises a supporting stand column, a rotating assembly is installed on the supporting stand column, the rotating assembly achieves the rotation between an installation position and a detection position through a rotation driving mechanism, and a wheel set assembly is fixed on the rotating assembly through a fixing device. A supporting piece used for supporting the gearbox in the vertical state is further installed on the rotating assembly, and an axial jacking device is installed at one end of the wheel. The device is simple in overall structure and convenient to operate, the large bearing clearance of the gear box with the wheels can be measured, the problem that the large bearing clearance cannot be detected in the assembling process of the gear box with the wheels is solved, the detection accuracy of the large bearing clearance is improved, and the running safety of a vehicle is guaranteed.

Description

technical field [0001] The invention relates to the technical field of train maintenance, in particular to a device and method for measuring the clearance of a large gear bearing with a wheel gearbox. Background technique [0002] In urban rail vehicles, gearboxes are installed on the axles. The gearbox is an important part of the electric traction system of urban rail vehicles. It transmits the torque transmitted by the motor through the coupling to the axles to drive the wheels to rotate, thereby Drive the vehicle to run. [0003] There are corresponding bearings installed on the large gear side of the gearbox. The bearings generally use tapered roller bearings. Since the gearbox is under variable load and high vibration conditions for a long time, it requires extremely high safety and stability, and the bearings are used as gears. As an important part of the gearbox, the selection and adjustment of the gearbox bearing clearance has a great influence on the life of the be...

AI Technical Summary

Problems solved by technology

However, in the process of maintenance of urban rail vehicles, the gear box needs to be overhauled and the measurement of the large bearing clearance is carried out in the state of the wheels. Due to the large diameter and weight of the wheel, the total weight of the gear box and the wheel set after installation Generally more than 2 tons, and the gap between the gearbox and the wheel is small, the existing detection method cannot be applied to the measurement of the large bearing clearance in the state of the wheel

If the wheel set is kept in a horizontal state, due to the gravity of the gearbox itself, the problem of insufficient bonding of the tapered roller bearing and uneven thrust applied horizontally cannot be avoided, resulting in large deviations in the test results

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