The Cause Of The Mechanical Travel Of The Electric Locomotive In Series

The reason why the electric locomotive mechanical characteristics of series excitation ideas form this situation is as follows:

One is that the maintenance is not real-time. When the battery locomotive owner handle is in the position of 1-3 (or 1-4), the immovable faults of the motor vehicle (such as: the controller contact is not closed, or the resistor has been burnt, or the circuit is open) is not cleared, so that the resistor of the locomotive is not connected into the motor current circuit, which will cause the resistor to not play the current limiting role.

Second, the driver of the battery locomotive does not operate according to the technical regulations during operation, not turning the main handle of the driver controller step by step, but turning the handle to the normal operation position (i.e. without resistance operation position) at a sudden, which also makes the starting resistance not play the current limiting effect at a certain level, which causes the motor starting current to be too large. Cloud cloud has been running with disease for a long time, and illegal operation will affect its service life.

In the transportation process, the reverse current braking is often applied to the battery locomotive, that is, the emergency braking is often applied to the motor vehicle because of the huge underground consumption conditions and poor transport track quality, and the brake, lamp and alarm bell of the locomotive are not in good condition. Although the braking effect is remarkable, it violates the operation rules, and it will strike the motor car and its motor mechanically and current.

The characteristics of the mechanism of series excitation motor are obvious. The frequent implementation of reverse braking has an effect on the service life of the series excited locomotive, especially when the additional resistance RF does not work.

The electric locomotive is still overloaded, which affects the service life of the motor in the transportation design calculation. As usual, it is calculated according to the temperature rise condition of the traction motor of the battery locomotive, and checked according to the braking conditions and relevant economic factors and technical conditions. However, in the actual transportation process, the driver of the battery locomotive often ignores this and often overloads the operation. For example, some transport teams pull hard when they can pull, and they will be hard pulled with sand if they can not pull. The number of tractors often exceeds the number of tractors calculated according to the adhesion conditions. In this way, the temperature rise of traction motor will be higher than the allowable value. Cloud cloud will run for a long time. The insulation will be reduced and aged due to overheating, thus reducing the service life of the locomotive.