1. The coefficient of friction refers to the ratio of the frictional force between two surfaces to the straight force acting on one surface. Related to the roughness of the appearance. According to the nature of motion, if two surfaces are stationary relative to each other, a strong bonding force - static friction force - will be formed between the two surfaces at the point of touch. Unless this bonding force is damaged, one surface can move relative to the other. The ratio of the bonding force before motion to the straight force on one surface is called static friction.
The main friction coefficient of a belt conveyor refers to the friction coefficient between the automatic wheel and the inner surface of the belt. The surface friction coefficient of the roller embossing treatment increases. The company's existing belt is made of canvas on the inside, and the friction coefficient should be above 0.8. Friction force is related to the coefficient of friction, belt tension, wrap angle between the belt and the automatic drum, and the surrounding resistance between the belt and the drum.
2. The angle between the inner side of the angle belt and the circular arc section of the automatic roller after being wrapped around it, with the automatic roller as the base.
The corner determines the contact area between the automatic drum and the belt. Usually, the package angle should be ≥ 120 ° and ≤ 230 °. The company's drum adopts the technique of surface rolling to increase the friction coefficient, and the package angle should be within ≥ 120 ° ≤ 180 °.
3. Belt traction force is mainly generated by the weight of the transported goods, the belt itself, and the pressure generated on the drum after tensioning.
4. Motor selection
When selecting the speed ratio, please refer to the speed range of 1250-1350n/min for domestic motors operating at 220V 50HZ.
The transmission power of B is lost, and the power of the motor will be lost by 1/3 after being transmitted through the gearbox. A good gearbox has a transmission power of around 66%.
When selecting the transmission power, reference should be made to the speed ratio, as equipment with higher line speed requires greater motor power. The increase in speed is proportional to the power.
The selection of safety margin should choose a motor with a minimum starting torque more than twice that of the equipment as the power source.
The diameter of the automatic drum is directly proportional to the starting torque. The larger the diameter, the greater the required starting torque.

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