At present, China is still a large country of coal production and coal consumption in the world. Coal mining is decentralized and efficiency needs to be improved. Safety accidents in coal areas occur from time to time. For coal enterprises, it is a major challenge to accelerate the intelligent construction of coal mines, deepen the clean, safe, efficient production and utilization of coal, and accelerate the green development of the coal industry.
When you step into the coal mining area, the first scene may not be the endless black coal, but several crisscross "dragons", some several kilometers long, some even tens of kilometers long. These "long dragons" are the transmission lines of coal. Whether underground or open pit, coal mining needs to be transported to the next link through the transmission line for processing or use. Coal transmission line is an important part of coal mining and transportation.
In order to increase the amount of coal transported, the coal transmission line often bears a large load; At the same time, the environment of the mine site is relatively harsh, with more dust. However, most coal mines require 24-hour continuous operation. Therefore, the reliability and stability of the coal transmission line are critical to improve the mining efficiency. Any unexpected shutdown may become a production or operation accident.
Figure 1 Coal Transmission Line
The coal conveying line usually uses integral bearings or ordinary bearing units with seats (the internal bearings are integral bearings) as the support of the roller. The sealing effect is general, and the dust is easy to enter the bearing, which may lead to premature failure of the bearing. At the same time, the bearing unit with seat at the drive roller position of the conveyor line is located between the drive equipment and the roller, and its later maintenance and overhaul are time-consuming and labor-intensive, resulting in a long shutdown time of the conveyor line. The traditional bearing scheme restricts the improvement of coal mining efficiency, and also causes maintenance workers to be exposed to security threats for a long time.
Fig. 2 Ordinary bearing unit with seat
(Internal bearing is integral bearing)
Timken ® The fully split cylindrical roller bearing unit with seat is a new generation of bearing solution. Compared with ordinary bearing units with seats, its internal cylindrical roller bearing is a "two half" structure. At the same time, a "two half" bearing box is added between the bearing and the bearing seat. Therefore, we are also used to call it a fully split bearing unit with seats. The fully split bearing unit with seat is suitable for the occasion with limited bearing installation and disassembly, which perfectly fits the application occasion of the drive roller of the coal conveyor line.
Figure 3 Timken ® Fully split cylindrical roller bearing unit with seat
(The internal bearing is a full split bearing)
The fully split bearing unit with seat is installed and disassembled radially without disconnecting and disassembling the components around the bearing, such as motor, gearbox and coupling, which greatly reduces the downtime caused by bearing maintenance and overhaul. In addition, high performance and various sealing options provide strict protection for the healthy operation of the bearing. The unique design of the cylindrical roller bearing core and the outer spherical bearing box ensures that it has both the centering function and excellent axial floating capacity.
Fig. 4 Application of fully split bearing unit with seat in belt conveyor
The fully split bearing unit with seat can bring considerable operating cost savings. First, it eliminates unexpected downtime and production losses caused by time-consuming installation processes - in some cases, the losses may be huge; Second, the installation cost is greatly reduced. Compared with ordinary bearing units with seats, the full split type installation is faster and simpler; Third, the cost of dismantling and replacing adjacent components is eliminated; Finally, the maintenance cost is reduced. The fully split bearing unit with seat is more convenient for comprehensive inspection, and its maintenance efficiency is extremely high. The use of fully split bearing units with seats can significantly improve the operating efficiency and profitability of coal transmission lines and bearings from the perspective of the whole life cycle, although the cost of early investment is high.
Fig. 5 Operation cost saving of fully split bearing unit with seat
As a bearing manufacturer with a history of more than 120 years, Timken has always been committed to improving equipment efficiency and providing customers with added value by taking advantage of its own engineering technology. We follow the trend of the times, solve engineering problems for customers, and contribute to social progress.
More about VAFEM Wheel Bearing:
A wheel bearing is a circle of ball bearings secured in a ring called a 'race'. This simple yet ingenious design helps your wheels turn with the minimum of friction. VAFEM wheel bearings are for cars, trucks and planes. In cars, wheel bearings rotate on the end of the axles and fit snugly into the wheel hub. The hub is a kind of cup-shaped component found in the centre of each wheel. Located on the hub are lug bolts which are used to hold the wheel in place.
As a precious high quality wheel bearings manufacturer and supplier in China, VAFEM can guarantee the quality and precision of the products through complete testing technology and advanced equipment. Please come to buy wheel bearings at the best price and quality from VAFEM. Please contact us for any questions!
2022-12-18