In the 1970s, the Soviet Union rose sharplythe question of creating very powerful cars that can help in the construction of a variety of large-scale energy facilities. As a result, the machines which load-carrying capacity exceeded 40 tons gained the greatest popularity, and their technical characteristics enabled them to move around their quarries without any problems. One of such widely sought-after dump trucks was the BelAZ 7547, which will be discussed in this article.
Appointment
Powerful car produced in Belarus.Mining dump truck BelAZ 7547 was created for transportation of various mountain masses in loose condition along special roads in open pit conditions. The machine can be used during the construction of large-scale industrial, hydraulic facilities, as well as during the construction of road complexes. In addition, the truck is actively involved in enterprises associated with the processing of raw materials. The car can overcome significant inclines, almost not susceptible to the road surface and, one can say, irreplaceable during the transportation of raw materials from quarries with a high degree of water inflow.
Engine
The dump truck BelAZ 7547 is equipped with a four-stroke,diesel engine, the cylinders in which are located V-shaped. The incoming air is cleaned using dry filters (two-stage or three-stage), equipped with pollution sensors.
Engine lubrication system - mixed type,fluid circulates in it under compulsion. The motor also has pre-heating, which is carried out by the fluid system. In addition, in the presence of electric starter and pneumostarter start system.
Transmission Description
Dump truck gearbox completein the hydromechanical version it has four shafts and six friction-type couplings, with the help of which the switching takes place. The gearbox provides 5 speeds for driving forward and 2 speeds back. Also there is a brake with blades. Hydromechanical transmission is associated with the main power unit and drive axle using a pair of open-ply universal joints.
Wheelset
On the truck are tires with pneumatic pressure andtread pattern career performance. A second version of the wheels is also provided - metal cordless tubeless. Both options without problems can withstand the load within 14,500 kilograms per wheel, which made it possible to increase the efficiency of the entire machine. High throughput and high load capacity of the car made it possible for many industrial facilities to abandon the use of expensive domestic railway lines in servicing.
Brake system
BelAZ 7547 is equipped with shoe brakes withseparate pneumatic drive for front and rear wheels. Type of brakes - drum. However, the designers also provided for the presence of dry single-disk (in some cases, multi-disk) brakes.
Mounted on the main drive shaftparking brake permanently closed type with pneumatic control. In the role of the spare brake is applied the circuit of the working brake system, which is in working condition. The gearbox drive shaft is equipped with a hydrodynamic retarder with electric control.
Driver's cabin
The BelAZ 7547 has a single driver's cabin,which has an adjustable seat. It is fixed on a torsion or air spring. Available as an auxiliary side seat. At the request of the customer in the cabin can be installed air conditioning. Available heaters are made in the liquid version, and on the rear-view mirrors electric heating is provided. The steering system provides a hydraulic drive.
Technical specifications
The BelAZ 7547, the characteristics of which are listed below, can operate in an ambient temperature range from - 50 to + 50 degrees Celsius.
Specifications dump truck following:
- engine type - YaMZ-240NM2;
- power - 500 horsepower;
- torque - 1600 revolutions per minute;
- maximum speed of movement - 50 km / h;
- dead weight - 33 tons;
- the machine is able to transport 45 tons of rock;
- turning radius - 10.2 meters;
- tires - 21.00 –35;
- platform volume indicator - 19 cubic meters;
- truck length - 8.09 meters;
- width - 4.62 meters;
- height - 4.39 meters;
- fuel consumption indicator - 224 liters for every 100 kilometers traveled;
- the rear axle is equipped with a bevel differential and planetary wheel gears.
Design Features
БелАЗ 7547 оснащен сварной высокопрочной Platform - a bucket with a special visor to protect the driver's cab. The bucket, together with the cargo, rises to full unloading in 25 seconds, and lowers - in 20. Three-stage telescopic hydraulic cylinders provide bucket movements.
