Large-scale mining operations urge giant mine dump trucks to come out

In the past few years, many mining companies have been tending to larger-scale mining operations in search of better economic returns. It is expected that in the next few years, the output of mineral products of these large companies will reach the peak. A new generation of smart mega-dump dump trucks suitable for on-site needs in the field of road transport has been launched. The mine dump trucks are lighter, larger in capacity, more fuel efficient, and have less tire wear. At the same time, manufacturers have taken some improvement measures for this dump truck, equipped with advanced computer operating systems for maintenance and automated operations. Mine mining dump truck automation is a new and important field for the mining industry. The first generation of intelligent dump trucks are in use around the world. To meet the growing demand, a new generation of intelligent giant dump trucks are emerging. Caterpillar and the Carnegie Mellon University Robotics Institute became partners and they collaborated to develop a large-scale automated haul truck. It is expected that in the next few years, the automatic dump truck will have a carrying capacity of 240 tons or more. The mining giants all want automated dump trucks to be used in mining areas. In the development of iron ore in Bibbana, Australia, Rio Tinto has been using unmanned dump trucks imported from Komatsu Japan. After more than one year of application, Rio Tinto has achieved good results.

Although auto-trucks have experienced problems of one kind or another in other parts of the world when they were first used, people are increasingly feeling that they can be safer, greener, and easier to maintain than traditional dump trucks. .

Each Komatsu mining vehicle is designed using the standards of the Vehicle Health Monitoring System (VHMS) and can be downloaded using any satellite wireless communication system. This model enables technicians to easily check stress using a simple internet interface. , Summarize the previous day's payload and immediately notify the key cause of the failure. Caterpillar's Audi A4 has 50 times the computing power of its predecessor. The new module can monitor more than 30 important engine functions, drive 20 injectors and switches, and more than 100 engine parameters record the health of the engine and help diagnose problems. From the point of view that people want to continuously increase the smart requirements of mining vehicles, this will undoubtedly be the direction of progress. The fact that the scale of mining dump trucks will increase significantly in the coming years will have a profound effect on the future development of automation systems. People are increasingly feeling that automatic dump trucks can be safer and more environmentally friendly. In the future, larger trucks that can be remotely controlled will be popular. One of the main requirements when designing these huge machines is that the total weight of the dump truck cannot exceed the carrying capacity of the tire. Every 1 kg of weight reduction in the vehicle itself can increase the payload of the vehicle. The T282B is 12% lighter than similar mining dump trucks. This is a clear advantage because the light dump truck can also save fuel when the empty car is returned. This will greatly extend the service life of the tire. This will be a major factor. Cost savings because such large tires are worth thousands of dollars each. The vehicle designed by Liebherr is based on the principle of kinematics and is operated by two parallel control rods. When the vehicle turns, the torque and the speed of the traction motor are automatically adjusted by different drive wheel control systems, thereby the tire Wear is minimized. Many manufacturers have also taken this opportunity to sell, boasting how Liebherr has made major improvements to the engine and how its engines are fuel-efficient and low-emissions.

In recent years, in order to adapt to changes in market demand, mining dump trucks have gradually been recognized by users and become the protagonist of mining vehicles in large mines. Several domestic truck manufacturers have also subdivided operating models for such markets as open-pit mines, water conservancy and hydropower projects, and steel mills. Among them, Shaanxi Automobile is the representative. Following the launch of the “mine mine” at the end of 2008, Shaanxi Auto added the “mine conqueror” in 2010, perfectly interpreting the benchmark image of the Shaanxi dump truck. The most important feature of the mining area is the distance, the curve, and the elevation. Due to the heavy weight carried by the mining dump truck, this puts high demands on the engine: high horsepower, good climbing ability, and easy start-up. The mine conqueror equipped the only domestic mature Weichai WD12 high-horsepower mining engine with lower heat load. Fast 10JSD180 large torque transmission gear, gear strength is greatly enhanced, more suitable for mining environment. In particular, the Xuzhou Meixi wheel-side speed reduction axle was equipped with a maximum speed ratio of 11.29 and a minimum ground clearance of 370mm. Good passability and perfect match can meet the current poor road conditions and environment in China's mining areas. The high-pressure oil pump adopts flange gear drive to reduce vibration, and the reliability index of the whole machine is higher than 20% of similar products; the twist angle of the three-point floating support structure with the frame distortion can reach 15°. Imported ZF8098 steering gear with working pressure up to 17MPa right-side power cylinder, better steering stability.

Shaanxi Automobile's "Conqueror" series cabs are all mine-biased. The use of a reinforced, equal-width grooved frame with an outer width of up to 1020mm. The reinforced wide-body welding box-type rigid front axle can fully ensure the vehicle adapts to the harsh working environment. Taking Shaanxi Automobile SX5504ZPT364 as an example, this car adopts a mature Steyr balance shaft suspension, longitudinal semi-elliptical leaf spring, unilateral obliquely mounted four horse riding bolts, and reinforced mine-specific thrust rods and rear stabilizer bars. The vehicle has a stronger carrying capacity. With 14.00-24 steel tires, the stability is good and the bearing capacity is stronger. On the basis of the width of the cargo box is 3000mm, the length of the container has two models of 5400mm and 5700mm, which are subdivided into the mine container and the rectangular container, which can be used by the user to make the most suitable choice. Shaanxi Automobile's "conqueror" uses Weichai's WD12 in-line four-stroke direct injection turbocharged intercooled 12L large-displacement engine, matching a dedicated P12 high-pressure oil pump and high-efficiency supercharger, and fuel injection atomization is better. Weichai WP multi-stage composite dust filter, the separation effect up to 99.5%. The new fuel filtration system and flame preheating device have higher intake efficiency and more complete combustion, are suitable for mine operations, extend filter life, effectively protect engine wear and reduce operating costs. Compared with the WD615, the WD12 diesel engine has a larger area of ​​economic fuel consumption than the WD615, and the economic fuel consumption area basically covers more than 80% of the vehicle's loaded work area. Under the same load conditions, the fuel consumption is significantly reduced by 15%, which can fully save the user's cost.

Compared to ordinary dump trucks, mine dump trucks have wider widths, higher horsepower, and harsher operating environments. This requires mine dumpers to require more "safety." Ultra-wide field of view mirrors eliminate blind spots in all directions; LCD video reversing system fully considers complex road conditions and improves the safety of operation; rear taillight work lights facilitate night-time reversing operation; and the rear of the cab is a coil spring double shock absorber It also effectively mitigates the impact. At the same time, 300mm long wings are extended on both sides of the large box to protect the tires and the fuel tank. The large box that widens and enlarges the visor can cover the cab and protect the cab. 14.00-24 The tire of mechanical engineering shall be equipped with a gas-intake pipe fitting on the inner tyre of the rear axle of the rear axle of the Shaanqi patent to provide longer life and more convenient maintenance. In addition to the competitive advantages of the products themselves, Shaanxi Automobile's after-sales service and service philosophy also maintain its leading position in the industry. For special users, special sites, and sites for all-weather personal service, relying on the geographic advantages of Baotou and Ordos, a service support service group has been specially established, a designated service agency in a specific area, and a one-stop tracking solution to solve the user's worries in the process of use. At the same time, in order to provide high value-added products to the majority of distributors and users, and occupy the high value of the heavy truck industry, Shaanxi Auto's after-sales service has fully implemented “Ultimate Action”, ie, using the shortest time, the most immediate route, the most effective action and The best service quality to serve more Shaanxi Auto users. For special users of heavy trucks, construction sites for special areas (mines, construction sites), all-weather services, and creating a heavy truck service.

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