BelAZ 7547: brief information about the dump truck

In the 1970s, the question arose in the Soviet Union of creating very powerful cars capable of helping to build a variety of large-scale energy facilities. The greatest popularity as a result have found the cars which carrying capacity exceeded 40 tons, and the technical characteristics of them enabled them to move without problems in quarries. BelAZ 7547 became one of such widely demanded dump trucks, which will be discussed in this article.

Appointment

A powerful car is produced in Belarus. BelAZ 7547 mining dump truck is designed for transportation of various mountain masses in loose condition on special purpose roads in conditions of open quarries. The machine can be used during the construction of large-scale industrial, hydraulic facilities, as well as during the laying of road complexes. In addition, the truck is actively involved in enterprises involved in the processing of raw materials. The car can overcome significant biases, almost not susceptible to the surface of the road and, it can be said, indispensable during transportation of raw materials from quarries with a high degree of water inflow.

Engine

BelAZ 7547 dump truck is equipped with a four-stroke, diesel engine, the cylinders in which are located V-shaped. Cleaning of incoming air is carried out with dry filters (two-stage or three-stage), equipped with pollution sensors.

The lubricating system of the engine is of a mixed type, the liquid circulates in it compulsorily. The motor also has pre-heating, which is carried out by the liquid system. In addition, there is an electric starter and pneumatic starter system.

Transmission Description

The dumper gearbox is made in a hydromechanical version and has four shafts and six friction clutches, with which the switching takes place. The gearbox provides 5 speeds for forward and 2-reverse. Also there is a brake with blades. Hydromechanical transmission is interfaced with the main power unit and the driving bridge with the help of a pair of open cardan.

Wheel Wheels

On the truck there are tires with a pneumatic paddle and a pattern of a tread protector. There is also a second version of the wheels - metal cordless tubeless. Both variants can withstand the load of 14,500 kilograms per wheel without problems, which made it possible to increase the efficiency of the entire machine. High cross-country ability and high carrying capacity of the car allowed to refuse many industrial objects from using expensive domestic railways.

Brake system

BelAZ 7547 is equipped with shoe brakes with a separate pneumatic drive for the front and rear wheels. Type of brake - drum. However, the designers also provided for the presence of dry single-disk (in some cases, multi-disc) brakes.

The parking brake of permanently closed type with pneumatic control is mounted on the main drive shaft of the main drive . In the role of a spare brake, the contour of the operating brake system is applied, which is in working order. The drive shaft of the gearbox is equipped with a hydrodynamic retarder brake with electric control.

Driving cab

BelAZ 7547 has a single driver's cabin, in which an adjustable seat is installed. It is fixed to the torsion bar or pneumatic spring. There is also an auxiliary side seat. At the request of the customer in the cabin can be installed air conditioning. The available heaters are made in the liquid version, and the rear view mirrors provide electric heating. The steering system provides a hydraulic drive.

Technical specifications

BelAZ 7547, the characteristics of which are indicated below, can operate in the ambient temperature range from -50 to +50 degrees Celsius.

The technical data of the truck are as follows:

• Engine type - YaMZ-240NM2;
• Power - 500 horsepower;
• The torque is 1600 rpm;
• The maximum speed of movement is 50 km / h;
• Own weight of the truck - 33 tons;
• The machine is capable of transporting 45 tons of rock;
• Turn radius - 10.2 meters;
• Tires - 21.00 -35;
• The volume of the platform is 19 cubic meters;
• Length of truck - 8.09 meters;
• Width - 4.62 meters;
• Height - 4.39 meters;
• The fuel consumption indicator is 224 liters for every 100 kilometers of the track traveled;
• The rear axle is equipped with a tapered differential and planetary wheel gears.

Design Features

BelAZ 7547 is equipped with a welded high-strength platform - bucket with a special visor to protect the driver's cab. The bucket, together with the load, rises to full discharge in 25 seconds, and falls - for 20. Bucket movements are provided by three-stage telescopic hydraulic cylinders.