large railroad maintenance machinery contains systems and components which is made of mechanical components and hydraulic, pneumatic, electrical system, etc .And large railroad maintenance machinery is often out of order due to the high frequency and long time using of the component , such as stamping device, cleaning device, grinding device, stabilizing device, etc.The faulty component often leads to Lead to the vehicle doesn't work. At this point, if we can quickly replace the fault component and repair quickly, customers will save a lot of time in the maintenance operation.
