Mining dump truck 7540 BelAZ - specifications, features and reviews

2024 Author: Erin Ralphs | [email protected]. Last modified: 2024-02-19 11:42

The rapidly developing mining industry over the past decades has become an impetus for the manufacture of quarry vehicles capable of transporting not only very heavy, but also bulky goods. Among all the manufacturers that have ever produced mining equipment, BelAZ is the most advanced enterprise. Cars of this brand can make a strong impression with their dimensions, as well as technical characteristics. BelAZ-7540 is distinguished not only by its huge cross-country ability, but also has a serious carrying capacity.

These machines operate in the most difficult conditions, access to which is very difficult, and climatic conditions are not the most favorable. The machines are widely used around the world in the mining industry, as well as in the construction of large facilities for various purposes. BelAZ-7540 is the standard of power and high reliability.

HowBelAZ was created

The history of this plant, and with it the car, dates back to the post-war period. In the difficult and distant 1948, a machine-building peat plant was built in the city of Zhodino, Minsk region.

The first years it practically did not work, but in 1958 the production of dump trucks with a carrying capacity of 25 tons MAZ-525 was transferred from the Minsk Automobile Plant. Although these products did not differ in quality, the production of these cars was carried out for a long time. At the same time, new models were developed. So, in the 61st year, the BelAZ-540 with a carrying capacity of 27 tons rolled off the assembly line of the plant. At the same time, the plant's designers created a machine with a fantastic carrying capacity of 40 tons.

The plant has repeatedly been distinguished by various high awards, including at international exhibitions. But this is not the limit for BelAZ. In 1969, a 75-ton quarry BelAZ-549 appeared, and in 1978, model 7419, capable of carrying up to 110 tons of cargo. Further, the plant produced BelAZ-75211 with a carrying capacity of 170 tons.

The BelAZ-7540 model has been produced by the plant since 1992. The dump truck is considered one of the best in the world. The car is the smallest among serial cars, but its characteristics are not comparable with the features and capabilities of other trucks from world manufacturers. This dump truck has been designed to transport rock from the mining point to storage or processing facilities.

Car Features

The conditions in which such transport is operated are by no means easy. Even if you do not take into accountsmall distances (and this is from 1 to 5 km), these vehicles have to move through difficult sections. The roads are characterized by a variable profile, a large number of turns. Often, temporary roads are created in quarries, the coverage of which is unsatisfactory. In addition, the roads are an alternation of ups and downs of various lengths. Therefore, a mining truck must have serious technical characteristics.

It should be noted that BelAZ-7540 is a whole family of models. As for the operating parameters, they are the same in all modifications. The difference between them is only in the engines. Also, these cars are equipped with a torque converter gearbox, two types of brakes, a comfortable cab with climate control and other features.

Modifications and engines

The characteristics of BelAZ-7540 depend on the engine that is installed in the car. The 7540A models are equipped with the YaMZ-240 PM2 engine. The maximum net power of this unit is 420 liters, while the crankshaft speed will not be higher than 2100 rpm. This diesel unit has a volume of 22.3 liters, and the cylinders are arranged in a V-shape. The engine is not turbocharged. Cooling system - liquid type. The maximum torque is 1491 Nm at 1600 rpm.

A motor of the YaMZ-240M2-1 series is installed on the 7540V modification. This model differs only in the presence of a turbocharger and a pre-cooling airflow system.

Model 7540C is equipped with MMZ D-280 units. The power of such an engine is 425 hp. at a crankshaft speed of 2100 rpm. This motor has 8 cylinders with a V-shaped arrangement. Engine capacity is 17.24 liters. The maximum torque is 1913 Nm at a crankshaft speed of 1300. The motor is equipped with a gas turbine pressurization system. At the same time, there is an intermediate air cooling system.

7540 D series is equipped with imported Deutz BF8M1015 eight-cylinder engines. The power of such a unit is 350 horsepower at a crankshaft speed of 2050 rpm. The working volume of the cylinders is 16 liters. The maximum torque is 1835 Nm. Along with these models, there are other modifications in the series. They are equipped with engines from the American manufacturer Cummins.

Fuel consumption

As you can see, all engines are quite large. How much does a BelAZ-7540 car consume? It is worth considering one point - this is a career technique. Fuel consumption here is not for kilometers, but for hours. So, in one hour, models A, B, and E consume 55.3 liters of fuel according to the passport. Model C - 59, 77 l / h. Belaz D series needs 60.89 liters for one hour of engine operation.

automatic transmission

Regardless of the configuration, as well as modification, each machine from this series is equipped with a torque converter automatic transmission. The transmission is distinguished by the presence of a three-shaft matching gearbox. Also in the design there is a single-stage torque converter. Transmission -four-shaft, equipped with friction clutches and an electric-hydraulic control drive. The transmission allows five forward gears and two reverse gears.

To work in light conditions, dump trucks can be equipped with automatic transmission with four gears. Three are for forward and one for reverse.

Loading platform

The dump truck has a bucket type platform. It is welded and has a protective visor. Additionally, it can be heated from the energy of exhaust gases. The platform is equipped with a special device to lock it in the raised position.

Rama

Chassis - welded, made of the most durable types of low-alloy steels. The spars have a box section and vary in height. Spars are connected by crossbars.

The scheme of BelAZ-7540 is practically no different from other trucks, except for other overall dimensions.

Cab and equipment

The car is equipped with a single all-metal cab. It is located above the power unit. To get into the car, the driver needs to climb the stairs. There are two of them in the car - on the right and left sides. The salon is equipped with everything necessary for comfortable work behind the wheel. The seat is equipped with a cushioning system - so the driver can more easily endure shaking and vibration. Indeed, despite the large wheels, the car behaves very harshly on bumps - reviews say. The chair is adjustableheight as well as length. There is an adjustable backrest.

Control devices are located directly in front of the driver's eyes. This greatly simplifies the monitoring of key indicators and vehicle systems. The dashboard has a tachometer, speedometer, brake pressure gauge, voltmeter and hour meter. Mirrors give you full control of everything that happens behind the car.

This specialized machine is designed to operate in all areas, in all climates. Therefore, the cabin has a system that maintains a comfortable microclimate. Reviews say that driving a BelAZ is quite comfortable.

Dump truck undercarriage

BelAZ-7540 suspension - dependent for each axle. It has pneumohydraulic cylinders filled with nitrogen and oil. Two of them are located on the front axle, two on the rear axle. Cylinder strokes - from 205 to 265 mm.

Brake system

The BelAZ-7540 mining dump truck is equipped with a working drum-type brake system with a pneumatic drive. There is also a handbrake controlled from the passenger compartment. In addition, there is a spare and retarder. The system has a separator to discharge condensate, which periodically accumulates in the air system of the truck.

Repair and service

Maintain the machine after a certain number of engine hours. It is necessary to carry out service activities regularly, otherwise the car may fail. TO-1 is producedevery 100 hours or 2,000 kilometers. TO-2 - after 500 hours or 20 thousand kilometers. The cost of spare parts and components is very high, and in the event of a breakdown, the repair of BelAZ-7540 can cost serious amounts. But in general, the car is reliable, because it was designed to work in difficult conditions. Some models have been successfully used for 25 years without a major overhaul.