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In May this year at the exhibition of mining equipment in Moscow. Projects of automatic mining dump trucks were presented at the BelAZ booth. It was reported that one of these monsters is already being tested, but still it is built on the basis of the standard giant BelAZ-75131 and the driver's cab has been preserved. But the Japanese from Komatsu are so confident in the accuracy of their automatic systems. career monster that they just took and completely got rid of the cab.
The giant robot was presented at an exhibition in Las Vegas, calling the project Autonomous Haulage Vehicle - "autonomous heavyweight." It distinguishes original design. The body, designed for 230 tons of cargo, is placed above the entire chassis. The main idea is the absence of constant "front and back". Such a giant does not need to turn around, which means that loading and unloading sites can be made more compact. This design feature forced the developers to go for another experiment: all wheels are single-sided (dimension 59/80 R63) and steerable, and their suspension is completely independent.
Suspension of all wheels independent
In each of the wheels are electric motors that receive energy from a diesel engine. Total power 2700 hp Max speed reaches 64 km/h. The dump truck moves along the route completely autonomously with the help of cameras and infrared sensors, it can stop in front of a sudden obstacle. On difficult areas, or during transport manoeuvres, the remote control can also be used.
The operator can control the dump truck remotely from the remote control
Komatsu is already ready to transfer such dump trucks to test operation. According to our information, autonomous monster mining companies in Australia and Chile have already become interested.
In April 2018, Komatsu Ltd. began selling HD1500-8 mechanical mining truck - completely upgraded model, the previous versions of which are actively used in the mining industry.
dump trucks new series equipped with a 50-liter engine (45-liter in previous version), with a net power of 1175 kW (1598 hp). They are also equipped with a retarder with the most high rates in your class. When used in conjunction with the Automatic Speed Deceleration (ARSC) device, the machine is able to move quickly and safely down the side of a pit or mine. As a result of shorter cycle times, productivity is increased.
The dump truck is also equipped traction control Komatsu (KTCS), which implements continuous speed control rear wheels. When excessive slip is detected, the system automatically applies the brakes to maintain optimal tire grip on the road surface. This not only makes it easier to move on slippery or soft surfaces, but also prolongs the life of the tires.
The key components of the machine are the main frame, transmission and rear axle- were reconstructed according to the latest technologies and strength standards. Such upgrades will allow owners to reduce the cost of Maintenance and extend overhaul intervals, reducing the total cost of ownership. The Komatsu HD1500-8 is designed with a range of energy-saving technologies that can, for example, reduce power loss in the hydraulic system.
The HD1500-8 is offered as standard with KomVision (6 cameras around the machine) as well as real-time monitoring thanks to latest version COMTRAX Plus. All data on the operating conditions of the equipment, the duration of operation, as well as service indicators, recommendations for energy saving using the ECO mode indicator are displayed on a seven-inch monitor high definition located above the operator's workplace. The panel in the cab of the dump truck has an ergonomic round shape, the operator's seat is equipped with air suspension, the cab is equipped with a built-in heater and fan to create a comfortable environment in any weather. The stairs leading to the cabin are located diagonally at a slight angle. Such technical solution allows the operator to ascend and descend as comfortably and safely as possible.
The HD1500-8 Mining Truck is built with innovative technology to increase productivity, reliability and safety even in the toughest difficult conditions. On the territory of Kuzbass, Siberia, the Far East and the North-West federal district Komatsu equipment is supplied by Sumitek International. It was there, in the face of tight deadlines and harsh weather conditions, always supports the client with heavy machinery and equipment of proven brands, which are supplied by Sumitek International.
In addition to the headquarters in Moscow, the company is represented by four large branches in Krasnoyarsk, Kemerovo, St. Petersburg and Khabarovsk, and the company's network throughout the country includes 29 representative offices. Sumitek International is more than just a machine supplier. It is a reliable, responsible partner, which through its activities contributes to the efficient functioning of our clients' business.
Without these giants, the development of industry is not possible, the requirements of customers for such special equipment are constantly growing. Manufacturers are consistently increasing capacity, reliability and performance. Consider the popular, 10 models of the most big dump trucks in the world.
Komatsu 930 E-3 S E
This successful model Komatsu's largest mining truck Japanese manufacturers. The principle position of the company: "to work next to technology." On the base Yaroslavl plant created by Komatsu Manufacturing Rus LLC, many elements of the 930 E-3 S E are supplied for assembly directly from Japan, some are made by us. It is beneficial for Russian customers to work with Komatsu manufacturers, they have moved most of the production to Russia, and have established excellent service.
BelAZ 75 600
The machine of Belarusian manufacturers occupies a worthy place in the market of the largest dump trucks in the world. One of the improvements on this model is the body structure. Now the bodies are supplied from the Kuzbass Carriage Building Company. They are made of strong, durable Hardox-450 steel with the addition of alloying elements. This is one of the most big trucks, which is produced in the post-Soviet territory.
Terex Unit Rig MT 5500
One of the largest trucks in the world of British manufacturers. There are many useful innovations in the design of the car. Consumers appreciate this model for a well-calculated frame design, which, with minimum voltage bears the load. This will allow manufacturers to give a guarantee for 40 thousand hours of operation. Steering based on a continuous bridge design, which reduces the number of moving parts. The tire alignment on the bridge beam does not change, resulting in reduced rubber wear.
Komatsu 960E
Impressive photo of himself big dump truck in the world of Japanese manufacturers, Komatsu, which closely cooperates with Russian consumers. IN Kemerovo region, where more than 400 of the largest Japanese trucks in the world of Komatsu, a service for the maintenance and repair of Japanese equipment has been established. Despite its impressive size and weight, it is clearly visible in the video that Komatsu's largest dump truck is easily controlled. This is achieved by the design features of the bridges and a powerful steering hydraulic system.
BelAZ-75601
The model is one of latest developments plant of the largest BelAZ dump trucks. The video of the largest dump trucks in the world shows that the BelAZ-75601 was created on the basis of the BelAZ-75600. The differences in the photo are almost invisible, they are in individual elements, which are taken from other manufacturers of the largest trucks in the world. MTU 20V4000 engine, 3.75 thousand hp, electric drive transmission, elements electronic diagnostics Siemens. Cab with improved visibility, LCD monitor on the control panel.
Titan 33-19
The uniqueness of the once largest dump truck in the world shown in the photo is that it was released by Terex in single copy. After 13 years of productive work in the quarries of California and other fields, he was scrapped. But in 1993, wise men restored the most big truck and now, as a historical landmark, it is displayed under Sparwood. Tourists are happy to take a photo of the largest mining dump truck in the world in the 70s of the last century.
Liebherr T 282B
The Swiss model of one of the largest dump trucks in the world turned out to be successful, with sales of 75 units per year. Buyers appreciated the diesel-electric transmission joint production Siemens and Liebherr. The carrying capacity of one of the largest dump trucks in the world is 363 tons. The reliability of the brakes has been increased, they are electronically controlled, keeping the colossus on a slope of 15%.
MT6300AC
This model of one of the largest dump trucks in the world includes modern achievements of special equipment of this class. The load capacity of the dump truck is 363 tons, while the chassis is on two axles, so less rubber is required. Electric transmission alternating current. Since 2008, Bucyrus has merged with Liebherr and the Bucyrus line of the largest dump trucks has become known as the UnitRig.
Conclusion
The listed properties of the 10 largest mining trucks in the world show that global manufacturers offer consumers equipment with ample opportunities. Every year, the productivity of dump trucks, labor safety on them, and comfortable conditions for work.
With the release of the new HD 1500-7, Komatsu has expanded its range of rigid mining trucks.
New dump truck with a nominal load capacity of 144 t is equipped with diesel engine SDA12V160 rated at 1048 kW (1406 hp), with hydromechanical transmission and automatic seven-speed transmission, oil-cooled multi-disc brakes with speed retarders on all four wheels and standard system automatic control speed of movement (ARSC).
The dump truck diesel is characterized by the largest power in its class. In addition, it provides higher acceleration and speed at high specific power (in hp per 1 ton of transported cargo). High torque at low engine speeds, impressive acceleration with low fuel consumption guarantee maximum truck productivity. Engine in standard equipment equipped electronic system Quantum controls, Cummins Cense monitoring and prelubrication systems. The torque converter Komatsu, mounted in one block with a lock-up clutch, has electronic control modes of operation and load.
The automatic gearbox and transmission of the dump truck are installed on elastic rubber cushions that dampen and soften vibration effects from the engine and shock when the machine moves along intra-quarry roads. The hydraulic transmission control circuit consists of separate circuits, each of which is equipped with an additional cooler transmission fluid. The engine and hydraulic transmission provide the speed of the dump truck (empty, with a rolling resistance of 2%) in the range from 11 km/h in 1st gear to 58 km/h in 7th gear, and reversing- 9.4 km/h.
The dump truck is equipped with a spacious cab with circular hermetic glazing made of flat glass with a ROPS/FOPS rollover protection structure, providing an excellent overview of the work front, comfortable and safe working conditions for the driver. To do this, the cab is mounted on the frame of the machine on cushions that absorb engine and transmission vibrations and shocks that occur when the dump truck moves along intra-quarry roads. The dashboard is ergonomic, providing easy readability of instrument readings and easy accessibility in driving a dump truck. Moreover, in order to create safe conditions work, the driver's seat is adjustable in five positions, suspended on damping cushions and equipped with seat belts 78 mm wide, and steering column- telescopic design, with the possibility of adjusting the angle of its inclination.
All wheels of the HD 1500-7 are equipped with wet multi-disc brakes that provide the highest retarding forces in its class. This design of the brakes and fully hydraulic control systems ensure low maintenance and high reliability.
Wet multi-disc brakes and fully hydro-powered brake control systems provide low maintenance and high reliability in operation, as they (brakes) are completely isolated from dirt, which reduces their wear.
The service brakes and retarders are isolated from other truck hydraulic systems to ensure their reliability. The parking brake of the dump truck uses a spring attachment, combined with three dry discs mounted in the form of an input clip to the differential. Fully hydraulic systems brake controls eliminate the use of a pneumatic system: no venting is required, and problems arising from the condensation of water from the air, which can lead to pollution, corrosion and freezing, are completely eliminated.
Efficient and smooth braking performance The dump truck is provided by a hydraulic fluid pressure proportional distribution (PPC) valve system, which very accurately and metered determines the amount of hydraulic fluid pressure on each brake unit of the machine.
On dashboard The cab of the dump truck has an auxiliary button for applying the brakes. Pressing this button activates wet multi-disc brakes on all wheels. Also, thanks to this button, the brakes are automatically activated when the hydraulic fluid pressure drops in brake chain below a certain level.
The dashboard of the dump truck provides constant visual control over the technical condition of the main units and assemblies. In the event of a malfunction or approaching signs of a violation normal mode their work appears on the panel in light and digital form warning signals and information that tells the driver what to do. All malfunctions in the operation of the machine are recorded and stored in coded form for subsequent reading on a laptop service department.
The main feature of the design of the HD 1500-7 is the unusually high completeness of the dump truck various systems automatic control, blocking, diagnostics and maintenance of stable modes of its operation with the specified parameters when moving in specific mining conditions of open pits.
In addition to the above systems and devices, the dump truck is equipped with an ARSC system - automatic maintenance constant speed when the dump truck is moving downhill, which allows the driver to set (assign) a fixed speed using a special joystick, focusing all his attention only on controlling the movement of the dump truck along career exits. The system allows the driver to set speeds, changing them in increments from ±1 km/h to ±5 km/h, by simply pressing the joystick button located on the dashboard, and, ultimately, select optimum speed movement of the dump truck downhill.
At the same time, the system constant control above the temperature of the oil cooling the retarder, so that when the oil is heated above allowable temperature the speed of the dump truck is automatically reduced.
The AISS system is designed for rapid retraction to automatic mode the heat of the engine coolant and the use of this heat to heat (cool) the cab of the dump truck. At the same time, the system ensures the operation of the engine in the mode idle move with a crankshaft speed of 1000 rpm at a coolant temperature of 30°C or lower. If the fluid temperature rises above 30°C, the system reduces the engine speed to 650 rpm.
In addition, the dump truck is equipped with an ASR system for automatic control of traction forces developed by the drive wheels. This system supports maximum level traction characteristics by preventing the rear drive wheels from slipping in any direction.
Lubrication of friction pairs and dump truck mechanisms is provided automatic system Lincoln Autolube.
The HD 1500-7 dump truck is characterized by the following series design features. Front wheel suspension - independent, MacPherson type, mounted on A-frame installed between each wheel and the main frame of the dump truck.
The increased distance between the front wheels and the main frame of the dump truck increases the steering angle of the wheels. It is clear that the greater the angle of rotation of the wheel, the smaller the turning radius of the dump truck. Thanks to this design of the front suspension, the minimum turning radius of the dump truck is 12.2 m.
Telescopic dampers independent suspension front wheels provide a smooth ride and comfortable handling dump truck when driving on quarry roads.
elongated wheelbase, wide track and extremely low center of gravity allow the dump truck to develop high working speeds and high productivity in the transportation of quarry cargo.
The large loading area of the body (with its width of 5.70 m and length of 7.67 m) makes the process of loading the dump truck technologically simple - with minimal spillage of rocks through the sides of the body both during loading and when the loaded dump truck moves along the roads. The volume of rock placed in the body (with a "cap") - 78m3.
Equipping the dump truck transmission with the Skip-shift system allows, when a loaded machine is moving uphill, to move at an automatically selected speed in a gear corresponding to the steepness of the road. As a result, while the dump truck is moving uphill, the number of gear changes is optimized, which ensures its smooth running, reduces cargo spillage and increases the comfort of the driver.
The dump truck is equipped with a flat-bottomed body made of high-strength and wear-resistant steel with a hardness of 400 HB, which provides excellent rigidity, large
service life and low operating costs. In addition, the sides and bottom of the body are reinforced with stiffeners. The bottom is made of rolled sheets with a thickness of 19 mm, the front wall is made of sheets of 12 mm, the sides are made of sheets of 9 mm. In winter, the body is heated exhaust gases engine, directed into the cavities of the bottom and sides.
The body of the dump truck during unloading is tilted at an angle of 45 ° using two 3-stage working cylinders new design providing damping of dynamic vibrations, smooth and reliable unloading of cargo. In addition, the structure of the body frame reduces the speed of its lowering after unloading, so as to reduce the dynamic impact on the frame and suspension of the dump truck. The time for lifting a loaded body and lowering an empty one is 15 seconds each.
The tail frame of the dump truck in the area rear axle reinforced console with lights: clearance, brake, flashing and reversing, as well as with sound signal, which is activated when the dump truck is moving in reverse.
All truck hydraulic circuits are equipped with large capacity coolers to improve component reliability during sudden fluid temperature rises. For the same purpose, each hydraulic circuit, in addition to the main filter, has an additional line filter (Pu = 3 min), installed before the control valve of the circuit.
The dump truck is equipped with a VHMS system - for remote monitoring technical condition vital units and components. With this system, designers, factory personnel and distributors can get a complete set of information about the operation of the truck, if necessary.
For the production of the HD 1500-7 dump truck, torque converters, transmissions, hydraulic cylinders and electrical components are manufactured at Komatsu's own factories.
The dump truck is produced in an integrated production system ensuring strict adherence to quality standards in production facilities located in America and in Japan.
Depending on the geographic location of the customer, the production of machines for him will be located where their transportation will require less time and cost. Since the first Russian customers of the HD 15007 are located in the regions of the Far North of Russia, now the dump truck is adapting to work in climatic conditions-40°C. This Special Order for Russia is located at American production facilities. And this is not the limit, because. it is possible to manufacture a dump truck in arctic version, i.e. at -50°C. It should be noted that initially the HD 1500-7 dump truck was designed to operate in temperature and climatic conditions down to -30°C.
If necessary, at the request of customers, the machine can be installed preheater. This option is necessary for the normal operation of dump trucks in areas where there is no equipment maintenance infrastructure.
