Solutions To Some Faults Of DC Traction Electric Locomotive

We have a certain understanding of DC traction motor, DC traction motor and other problems. How to use the DC traction motor of battery electric vehicle safely and how to deal with the problems when there are some faults? We are all unfamiliar. Today, the manufacturer of Zhongli electric vehicle will come to you to analyze and solve some faults when using DC traction electric vehicle. Methods, let's look at the following analysis.

First: how to solve the problem of pinion fracture and bearing burning?
Prevent the relaxation of the pinion from the assembly of the motor; if there is no axial transmission of momentum in the armature, it means that the helical gears on both sides are jammed and cannot balance the axial force in the helical gear transmission by axial movement. In the operation process of the locomotive, the pinion on one side will be subjected to a larger axial force, so the pinion may cause relaxation.

Second: how can we solve the problem of commutation?
To reduce the value of EMF, in order to get a good commutation, when designing traction motor, it is hoped that the value of EMF should be as small as possible, so that the commutation EMF needed to offset the EMF is smaller. When the absolute values of these two Electric Locomotive EMFs are reduced, their residual EMFs are reduced accordingly, thus the commutation condition of the motor is reformed. Because of the decrease, it also reduces correspondingly. When the air gap of the reversing pole is small, the magnetic circuit is also guaranteed to be in a low saturation state, so that it can be better offset within the range of load change.

Third: how to deal with the underground mining locomotive not running after the controller is closed?
The contact of the automatic switch is burnt and falls off, the power wire is broken, the connection terminal falls off or the magnetic coil is open circuit. As the main contact and auxiliary contact of the controller fall off or have poor contact, the conductor is broken. Electric Locomotive The safe use of the DC traction motor may be due to the lack of elasticity, which makes the sliding plate not contact with the overhead line, or the power line is broken, and the wiring terminal is loose. DC traction motor has been widely used in metallurgical industry rolling mill, metal cutting machine, paper, dyeing and weaving, printing, cement and other large-scale industries. It has the advantages of simple structure, low cost, convenient maintenance, large transportation capacity, high speed, high power consumption efficiency and low transportation cost. In modern urban rail transit traction locomotive, DC traction motor is our only choice.