As service career giant
• How to serve career giant
What will happen to the soles of your shoes, if every day you will need to run on gravel? Yes, even with a heavy load? The answer is obvious. People in such situations helps special shoes. A large rigid dump trucks - special tires. To get acquainted with the work and maintenance of such equipment in extreme conditions, I offer to go to the South Urals.
City Satka in the Chelyabinsk region has been known since the middle of the XVIII century. Then here are based iron-smelting and iron works of Count Stroganov. Today there live 42 thousand people. Forming enterprise in Satka - combine "Magnesite". It supplies raw materials for the metallurgical industry of Russia and many foreign countries.
Satka known the country's largest deposits of magnesite, it opened on Karagai mountain at the end of the XIX century. This refractory material is widely used in metallurgy, production of glass, cement and building materials, as well as in oil refining. Karagayskiy career began work in 1900. Today, it reached a depth of 368 meters!
Clear the way for a century with little from the depths here produced about 120 million tons of magnesite. In a career there are still more than 5 million tons of mineral.
"workhorse" Karagai career. Volvo A40 articulated hauler transports ore and rock.
The weight of the machine itself - 30 tons, and carrying capacity of 9 tons more.
Body Volvo A40 accommodates 24 cubic meters of cargo.
Five to seven buckets - and the body is full.
Articulated Haulers operate in an environment far removed from the greenhouse. Bumps and rough coating is the main "charms" of technological roads. The main blow take on the bus. "Michelin" tires used on today Karagai career. And experience in the latest development of the world-famous companies - tire MICHELIN XTRA DEFEND.
The deep (6, 5 centimeters) tire tread helps to endure the hardships of poor coverage.
In comparison with its predecessors, the new tire has a lot more steel filaments in the frame, it has thicker walls and deeper tread. Yet nothing lasts forever. On Karagai career author of the report had a chance to see an interesting process - change of tires a huge truck.
First of all, the wheel rim richly flavored lubricant.
The weight of the new tires - 620 kilograms. That is why the process can not do without a forklift.
The tire fitted on the rim, the top installers set ring.
on an industrial scale is not only in size and weight. Retail price of a new tire is 350-360 thousand rubles including VAT.
One of the most critical stages of the new wheel assembly - landing of each element, and fixing them.
Volvo A40 - not a racing car. Assembly time and install a new wheel on the truck varies from 20 minutes to several hours, depending on the skill and repair team of technical equipment enterprise.
The wheel assembly weighs about 1, 2 tons.
The tire "Michelin" - tubeless, and stones from the road does not get stuck in the tread and fly at speed.
Volvo A40 dump truck on six wheels. Each nut 24 is attached. Thus, installers need to firmly tighten the nut 144 to fully "pereobut" dumper.
The manual process of pulling a lever with a long someone may seem anachronistic, but it is important in this case - to "feel" the nut that does not always allow for different units.
The maximum speed of Volvo A40 - 57 km / h.
Even ultramodern tire under heavy operating conditions are not immune to punctures and damage. Repairing MICHELIN tire dealers throughout Russia. After repairing the wheels are branded as new.
the previous generation tires were working 10-14 thousand hours. Manufacturers expect that the life MICHELIN® X®TRA DEFEND ™ will grow by 15-20%.
In some companies create supply already assembled wheels with tires, to reduce the term of the service truck service.
The rear pair - the most critical part of the complex wheeled Volvo A40, it accounts the maximum load during the emptying of the body at the dump pit.
Tires are typically used to expose the first belt layer (a steel cord belt) and then sent for recycling.