According to different transmission principles, belt transmission can be divided into friction type and meshing type.
Belt drive type
Friction belt drive is the most common type of belt drive. Friction belt drive can be divided into flat belt drive, V belt drive, multi-wedge belt drive and circular belt drive according to the section shape of belt.
Flat belt transmission
Friction is produced when the inner ring surface of the belt and the outer surface of the pulley are pressed together. Flat belt drive has simple structure, good belt flexibility and easy manufacturing of pulleys. It is mostly used in occasions with large transmission center distance.
V belt drive
The two sides of V-belt drive strap and the side of groove are compressed to produce friction. Compared with I flat belt drive, when the pressure of belt to pulley is the same, the friction force of V belt drive is greater, so it can transmit larger power, compact structure, and V belt has no joints, transmission is more stable, so V belt drive is the most widely used.
Multi-wedge belt drive
Multi-wedge belt (also known as composite v-belt) transmission works by friction between multiple belts and the wedge of the pulley. It has the advantages of both flat belt and V belt, and is suitable for situations requiring compact structure and high power transmission, especially for transmission requiring more V belt elements or vertical pulley axis to the ground.
Circular belt drive
The circular belt drive generates friction by compacting the belt with the groove. It is used for low-speed and low-power transmission, such as sewing machine, tape drive, etc.
Meshing belt drive
The meshing belt drive has only one kind of synchronous belt, which is meshed by the teeth inside the belt and the synchronous pulley. It is suitable for medium and small power transmission with accurate transmission ratio, such as electronic computer, grinder, textile machinery and tobacco machinery.