Brake control method and device, and fault protection method and device for mining vehicle

Abstract

The invention discloses a brake control method and device, and a fault protection method and device for a mining vehicle. The brake control method comprises the following steps of adjusting the rotating speed of a diesel engine to a nonzero assigned rotating speed value; controlling an excitation controller to enter a brake state; adjusting the output voltage of an electricity generator to the voltage corresponding to the rotating speed of the diesel engine; and controlling a transmission control unit to electrically brake a traction motor according to the current rotating speed of the traction motor in a real-time manner. The fault protection method comprises the following steps of monitoring the communication state of a traction system in a real-time manner; and if a communication fault occurs, executing braking according to the brake control method. The brake control device comprises a diesel engine brake control module, an excitation controller brake control module and a traction motor brake control module. The fault protection device comprises a fault monitoring module and the brake control device. According to the brake control method and device, the fault protection method and device for the mining vehicle disclosed by the invention, the brake control is suitable for the mining vehicle, high in environmental adaptability, simple in implementation method and safe and reliable, the fault protection can monitor the faults of the traction system of the mining vehicle in a real-time manner, and safe and effective brake can be executed in time.

Description

technical field [0001] The invention relates to the technical field of mining vehicles, in particular to a braking control method and device for a mining vehicle, and a fault protection method and device. Background technique [0002] Mining vehicles (such as mining electric wheel dump trucks), as a large-scale mine development engineering machinery, have been widely used in various mine sites. Because the vehicle is in the mine site, the operating environment is very harsh, and it often needs to work continuously for a long time, and the mine road environment is complex and changeable, causing the vehicle to vibrate violently and easily cause vehicle failure. Therefore, a safe and effective braking control mechanism is very important for mines. Vehicles are especially important. [0003] CAN (Controller Area Network) was originally designed by Bosch in Germany for vehicle monitoring and control systems. Modern vehicles are increasingly controlled by electronic devices, suc...

AI Technical Summary

Problems solved by technology

The CAN communication bus is the data transmission of the whole vehicle, responsible for the transmission of vehicle control data and status information, but the communication bus is easily interfered by large voltage and strong current in the traction system, and the vibration environment of mining vehicles is harsh, so it is easy to cause communication failures

When the vehicle traction system fails, the equipment will lose control. If the failure cannot be detected in time and effective braking is performed, it is very easy to cause mine personnel and equipment accidents

At present, in the case of communication failure of mining vehicles, because the driver of the driving vehicle loses control of the traction system, usually only the mechanical braking method can be used to stop; and the mechanical braking method, especially when the vehicle is running at high speed, the load of the mining vehicle And the huge self-weight can easily cause the brake disc to burn, which will affect the safety of the whole vehicle and equipment

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