What are the advantages and disadvantages of belt drive compared with gear drive?

Advantages: stable transmission, cushioning and shock absorption, simple structure, low cost, convenient use and maintenance, good flexibility and elasticity, overload and slipping.

Disadvantages: inaccurate transmission ratio, low belt life, large axle load, large overall size of transmission device and low efficiency. Therefore, belt drive is often suitable for large center distance, medium and small power, with belt speed v = 5 ~ 25m/s and i≤7.

Gear transmission is the most widely used transmission form in mechanical transmission. It has the advantages of accurate transmission, high efficiency, compact structure, reliable operation and long service life. At present, the gear technology can achieve the following indexes: peripheral speed v=300m/s, rotational speed n= 105r/min, transmission power P= 105KW, modulus m=0.004~ 100mm, and diameter d =1mm ~.

Belt drive, explanation

Belt transmission is a kind of mechanical transmission that uses flexible belt tensioned on pulley to transmit motion or power. According to the different transmission principles, there are friction belt transmission driven by friction between belt and pulley, and synchronous belt transmission driven by meshing teeth between belt and pulley.

Gear transmission, explanation

Gear transmission is the most widely used transmission form in mechanical transmission. It has the advantages of accurate transmission, high efficiency, compact structure, reliable operation and long service life. At present, the gear technology can achieve the following indexes: peripheral speed v=300m/s, rotational speed n= 105r/min, transmission power P= 105KW, modulus m=0.004~ 100mm, and diameter d =1mm ~.

Gear transmission type

Cylindrical gear drive

Bevel gear drive

Hyperbolic gear transmission device

Cross helical gear drive

worm drive

Circular arc gear transmission

Cycloidal gear drive

planetary gear transmission

Belt drive type

flat belt

Driving v-belt

Drive V-ribbed belt (multi-grooved belt)

Synchronous belt