Car tyres in the driving will have to wear the wheels of the underground train is no exception, and when the subway train turns the same wheel pair of different wheels are subjected to different forces, the degree of wear and tear is also different, it produces a wheel diameter difference, the wheel diameter difference is too large may lead to abnormal vibration of the underground train, generating noise, it will be necessary to send the underground train into the overhaul room to be repaired or replaced, and then put back into use!

Repaire

Let's go into the maintenance depot

Let's see how the wheels are repaired!

1.Hauling subways requiring wheel repairs to wheel turning beds

2.Fixing the position of the wheel pair to be turned

3.Measurement of the parameters of the wheelset to determine the dimensions to be machined.

4.The lathe trimming tool starts to operate, and the iron filings from the lathe will be sent to the scrap box.

Replaced

When the train wheels have been used to the limit, that is, wear and tear to the limit, the repair will not help, then you need to change the wheels for the underground train.

1.Put the underground train on a crane.

2.The inspectors work with each other to remove the wheels with specialised tools.

3.Putting on new wheels.

The "wheel change" is complete!

Isn't it easier than I thought?