1.Composition of belt drive:

Active pulley, driven pulley, drive belt, and frame

2. Working principle: When the driving wheel rotates, the driven wheel is driven to rotate and transmit power through the working surface friction or meshing effect between the belt and the pulley

3. Measures to improve the working ability of belt transmission: u, N, α (package angle)

4. Transmission ratio: i=n1/n2=D2/D1

Forms and Applications of Belt Transmission

There are many types of belt drives, and the commonly used ones are:

1. Flat belt drive - the simplest and most suitable for situations with a large center distance a,

2. V-belt drive - V-belt V-belt drive

3. Multi wedge belt - suitable for transmitting high power and requiring compact structure

4. Synchronous belt drive with meshing transmission, high speed, high precision, suitable for high-precision instrument devices. The belt is relatively thin and light

Characteristics and Applications of Belt Transmission

Advantages:

1) It has overload protection function

2) Has a buffering and vibration absorbing effect

3) Smooth and noiseless operation

4) Suitable for long-distance transmission (amax=15m)

5) The manufacturing and installation accuracy requirements are not high

Disadvantages: 

1) Elastic sliding makes the transmission ratio not constant

2) High tension force (compared to meshing transmission), high pressure on the shaft

3) The structural dimensions are large and not compact

4) Slip reduces the lifespan of the belt

5) Friction discharge occurs between the belt and the pulley, making it unsuitable for high-temperature, flammable, and explosive environments