Introduction to Alignment Idlers
Basic Concepts
The alignment idler is a kind of idler used to correct the deviation of the conveyor belt, with the English name "centring idler". It is widely applied in the field of mechanical engineering, especially in the belt conveyor system.
Working Principle
When the center line of the idler is not perpendicular to the center line of the conveyor belt, the idler will move forward at a certain angle. There will be a relative sliding speed and friction between the idler and the belt. This frictional force acts on the belt, generating a lateral force, thus achieving deviation correction.
Structural Features
- Channel-shaped Alignment Idler: It consists of three channel-shaped rollers and two small vertical rollers installed on the upper crossbeam. The lower crossbeam is connected to the intermediate frame, and the upper and lower crossbeam are connected through a rotating shaft. When the deviation is severe, the deviation-preventing vertical rollers can directly prevent and limit the deviation of the conveyor belt.
- Conical Alignment Idler: Two conical rollers are respectively installed on their own rotating shafts, and the two rotating frames are synchronized through a connecting rod mechanism. The crossbeam is directly connected to the intermediate frame. By taking advantage of the different diameters at both ends of the conical roller, a speed difference will be generated at the contact between the roller and the belt when the roller rotates, increasing the lateral thrust and realizing deviation correction.
- Friction Alignment Idler: The channel-shaped rollers and friction rollers are installed on the upper crossbeam, and the lower crossbeam is connected to the intermediate frame. The upper and lower crossbeams are connected through a rotating shaft. Friction discs are added at both ends of the channel-shaped rollers. When the conveyor belt deviates and contacts the friction discs, the frictional resistance will be increased, thereby increasing the lateral thrust applied to the belt by the idler and enhancing the alignment effect.
Product Features
- Automatic Deviation Correction: It can adaptively adjust the axial and angular deviations to ensure the stable operation of the conveyor belt and automatically correct the deviation.
- Smooth Operation: It operates smoothly and there will be no swaying during transportation. It has a small radial runout and rotates smoothly, reducing the manpower and material resources required during transportation.
- Long Service Life: It uses high-precision special steel pipes, with low vibration and low noise. It has multiple labyrinth seals to prevent the intrusion of dust and water, prolonging the service life of the idler alignment bearing housing.
- Strong Adaptability: It has various forms of bearing housings and sealing structures for users to choose from and can be customized according to different working conditions and requirements to adapt to various harsh environments and working conditions.
Application Areas
- Heavy Industry Field: In industries such as metallurgy, mining, power, cement, chemical engineering, building materials, and steel plants, it is used to support the weight of the conveyor belt and materials, meeting the requirements of heavy load and high-speed operation.
- Transportation Machinery Field: It is widely used in loading and unloading equipment in ports and docks, container cranes, bridge construction machinery, etc., ensuring the smooth operation of the conveyor belt and improving the transportation efficiency.
- Transportation Equipment Field: In transportation equipment such as railway locomotives and trains, it is used to support and ensure the stability and safety during the running of the vehicle.
- Other Rotating Equipment: It is suitable for rotating equipment such as bearing brackets, machine tool spindles, and wind turbines, ensuring the stable operation of the rotating parts and improving the overall performance of the equipment.
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