Belt transfer and conveyor belt are not the same thing, be careful not to confuse.
A conveyor belt is a type of equipment that is a mechanical transmission that utilizes a flexible belt that is tensioned on a pulley for motion or power transmission.
According to the different transmission principle, there is a friction type belt transmission which is driven by friction between the belt and the pulley, and a timing belt transmission which is driven by the belt and the teeth on the pulley.
Depending on the application, the belt drive can be divided into general industrial drive belts, automotive transmission belts, agricultural machinery transmission belts and household appliance transmission belts.
The friction type transmission belt is divided into a flat belt, a V belt, and a special belt (V-ribbed belt, round belt) according to the sectional shape thereof.
Flat belt drive
There are open drive, cross drive and semi-cross drive, etc., which are adapted to the different relative positions of the drive shaft and the driven shaft and different rotation directions.
The flat belt transmission structure is simple, but it is easy to slip, and is usually used for a transmission with a transmission ratio of about 3.
When the V-belt drive is working, the belt is placed in the corresponding groove on the pulley, and the belt is driven by the friction between the belt and the groove.
The V-belts are usually used in combination with a number of grooves on the pulley.
When driving with a V-belt, the belt is in good contact with the wheel, the slip is small, the transmission ratio is relatively stable, and the operation is stable.
The V-belt drive is suitable for applications with short center distances and large gear ratios (around 7), and works well in vertical and tilted drives.
In addition, because the triangles are used in combination, one of the damages does not cause an accident.
Multi-ribbed belt drive
The flexibility is very good and the back of the belt can also be used to transfer power.
If the containment angle around each driven pulley is large enough, one such belt can be used to simultaneously drive several accessories (alternator, fan, water pump, air conditioning compressor, power steering pump, etc.) of the vehicle.
It has five sections including PH, PJ, PK, PL and PM. The PK section has been widely used in automobiles in recent years.
This belt allows the use of a narrower pulley (diameter dmin ≈ 45 mm) than a narrow triangular belt.
In order to be able to deliver the same power, the pretension of the belt is preferably increased by about 20% compared to a narrow V-belt.
Timing belt drive
The working surface of the belt is formed in a tooth shape, and the surface of the rim of the pulley is also formed into a corresponding tooth shape, and the belt is mainly engaged with the pulley for transmission.
Synchronous toothed belts generally use a thin steel wire rope as a strong layer, and the outer surface is coated with polyurethane or neoprene.
The center line of the strong layer is defined as the pitch line of the belt, and the circumference of the belt line is the nominal length. The basic parameters of the band are the weekly p and the modulus m.