Whats called Mining locomotive? how many type does it have?
mining electric locomotives, which are divided into overhead trolley locomotive, battery locomotives, lithium battery locomotives, and dual-power industrial and mining electric locomotives. It is mainly transported ores,manpower in underground or roadway with rails. Here is a brief introduction to the working principles and applicable environment of several of them to help you choose products that are more suitable for you.
Trolley mine electric locomotive
1. Working principle: After the high voltage alternating current is stepped down and rectified by the rectifier cabinet, the negative pole is connected to the track, and the positive pole is connected to the overhead wire. The pantograph on the locomotive is connected to the overhead line, and the current is introduced into the car, and then enters the DC traction motor through the automatic switch, controller, and resistance box to drive the motor to run. The electric motor drives the wheels to rotate through the gear transmission device, thereby driving the train to travel. The current from the motor flows back to the converter through the track. Speed control methods are divided into resistance speed control, chopping speed control and frequency conversion speed control.
Applicable environment: mines and tunnels without gas.
Product features: low cost in the later stage and convenient maintenance.
Battery mine electric locomotive
1. Working principle: The battery mining electric locomotive is divided into explosion-proof type and ordinary type. The working method is that the direct current provided by the battery enters the motor through the plug, controller, and resistor to drive the motor to run. The electric motor drives the wheels to rotate through the gear shifting device, thereby pulling the train to travel. Speed control methods are divided into resistance speed control, chopping speed control and frequency conversion speed control. Resistance speed control has been gradually eliminated in coal mines.
Applicable environment: coal mines, metal mines or tunnel construction with gas can be used. Compared with overhead mine electric locomotives, the application range is wider.
Product features: The battery needs frequent maintenance, and needs to be replaced every time, and the later maintenance cost is high.
Lithium battery mine electric locomotive
1. Working principle: The battery mining electric locomotive of the same above is only operated by a direct current traction motor provided by a lithium battery. The motor drives the wheels through a gear transmission device to drive the train.
Applicable environment: any mines and tunnels that do not contain gas. At present, lithium battery mining electric locomotives do not have an explosion-proof certificate, so they cannot be used in coal mines.
Product features: Lithium battery power supply, maintenance-free, ready to use with charging, service life can reach 5-8 years.
Electric locomotive with dual power supply:
1. Working principle: Combine the working reasons of the overhead line mining electric locomotive and the battery mining electric locomotive. When running in the overhead line section, the traction motor mainly depends on the overhead line power supply to drive. At the same time, the battery The power supply device can also use the charging device to obtain energy from the overhead power supply to float the battery, supplement part of the energy consumption of the battery when running in the un-wired area, thereby prolonging the use and maintenance cycle of the battery and reducing the maintenance workload of the battery.
Use environment: coal mines, metal mines with gas or tunnel construction are all possible.
Product features: high efficiency, can be used for continuous transportation at the loading point of the main alley.