On June 27, 2019, the CR240E electric mining dump truck was taken offline at CRRC Datong Company. This mining truck is a type of off-road vehicle mainly used in open-pit mines, water conservancy and hydropower projects, etc. It is an exclusive transport vehicle for traveling between mining and unloading points, with a maximum load capacity of 240 tons and a maximum speed of 57 kilometers per hour. It has strong maneuverability and high efficiency. Adopting MacPherson front suspension and four-bar linkage rear suspension, and using high-strength alloy steel plate as the frame manufacturing material, the reliability of the steering system and components is effectively enhanced. The anti roll and anti fall design of the cab has been verified through experiments and has a panoramic window view, making the driving environment safer and more comfortable. At the same time, using LNG and diesel dual fuel drive can reduce vehicle usage costs by 8% to 15% and reduce greenhouse gas emissions such as carbon dioxide by about 20%, with significant green benefits.
At the same time, CRRC Datong Company continues to promote the localization process of mining cars and has developed the CR330E electric mining dump truck. This mining truck is a heavy-duty dump truck used in open-pit mines to complete rock and soil stripping and ore transportation tasks. It has a rated load capacity of 300 tons, a stacking capacity of 210 cubic meters, and a maximum speed of 58 kilometers per hour. The soul of the research and development of CR330E mining dump truck lies in its localization and localization. The core components of CR330E mining dump truck, such as the converter cabinet, resistor cabinet, wheel reducer, main generator, and traction motor, are all internally matched by CRRC, with a matching rate of 94%. This achieves the independent controllability of key core components, which not only ensures the safety and smoothness of the product, but also enhances the ability to guarantee the entire life cycle. The main frame adopts a lightweight design and is welded from formed plates, castings, etc. The front axle adopts MacPherson suspension, the wheel rims and hubs are connected by bolts, and the rear axle housing adopts a cast welded structure combining formed plates and castings. It is connected to the frame through an A-frame, wet disc braking, and the cab has anti rolling/anti falling object protection structure. Equipped with MTU and Cummins engines, the vehicle's electrical system has good scalability and reserves expansion interfaces for other systems such as remote monitoring and diagnosis, wiring, and autonomous driving. The various components of the vehicle are designed with standardization and modularity, equipped with a main and auxiliary integrated inverter, water-cooled heat dissipation, high heat exchange efficiency, and enhanced green efficiency of the entire vehicle when fully loaded and sloping. It can adapt to the transportation needs of various complex working conditions.
On June 19, 2024, the first batch of CR240EG plateau type electric drive mining dump trucks independently developed by CRRC Datong were officially delivered in Lhasa, Xizang. The electric transmission system of plateau mining cars is derived from mature rail transit electric transmission technology, in which key components such as converter cabinets, resistor cabinets, wheel reducers, main generators, and traction motors are jointly developed by CRRC internal enterprises. It is an important measure for CRRC to cultivate and develop new quality productivity. This mining truck is a mining transportation product designed by CRRC Datong Company for high-altitude areas, with a rated load capacity of 220 tons and a total load capacity of 400 tons. Its power system adopts an electronically controlled high-pressure common rail injection system and intake chamber direct injection technology for high-altitude engines, equipped with four turbochargers and a preheating system, to obtain greater power and torque while ensuring that the mining car can start quickly in high-altitude environments. The hydraulic system adopts full hydraulic constant pressure variable pump power supply braking control technology and dual gear pump parallel power supply electric control lifting technology, equipped with hydraulic temperature control valve, which can effectively cope with changes in high-altitude air temperature and pressure, ensuring that the mining car can maintain optimal transportation performance in extreme environments above 5400 meters above sea level. The cargo compartment adopts an "I" - shaped skeleton and differentiated wear-resistant plate layout. The bottom of the cargo compartment has a "V" - shaped protrusion, which can improve stress, enhance the rigidity of the cargo compartment, and overall increase the service life of the cargo compartment. The cab is equipped with a diffusion type oxygen machine and a parking heating device. The mining car can provide heating for more than 3 hours when parked, providing a comfortable and safe working environment for the driver.
CRRC Datong Company seizes opportunities, responds to challenges, deepens and expands the industrial layout of "one body, two wings, and one pillar", takes mining equipment business as "one wing", scientifically plans, and firmly commits to continuously strengthening, optimizing, and expanding the mining car industry. With the direction of intelligent manufacturing, the company has established a flexible production line for mining trucks and achieved improvements in product quality, cost, and production efficiency through digital and information technology. Intelligent navigation, digital welding, electronic distribution and other platforms have improved the research and development efficiency and quality of mining car products, enhanced the traceability management of process parameters, increased the "one-stop" material distribution rate, and achieved refined, automated and on-time production. At the same time, we will layout an innovative chain around the mining car industry chain, drive industrial upgrading with innovative development, help achieve green development of resources, and tailor electric mining dump trucks according to customer needs, truly realizing fully independent matching of core components, technical support throughout the life cycle, tracking of the entire after-sales service process, and full coverage of mainstream products, providing a complete and reliable solution for building digital mines and smart mines.