The law of mobile phone bracket motor

The mobile phone holder motor is a fixed geared motor. Once the speed ratio is selected, the motor is selected and the final output speed is fixed. But in actual use, there are many occasions to change the speed of the vehicle, such as the speed of the main shaft of the lathe, the speed of the stirring shaft of various agitators, and the conveying speed of different items. How to adjust the speed is a topic that engineers and technicians pay attention to. The following are the speed regulation methods currently used in engineering.

1. The variable speed regulation of the mobile phone holder motor is the simplest and most economical speed regulation method. But limited to small and medium capacity (below 2kW), there are not many occasions. Usually there are only two gear speeds, and the speed ratio that can be achieved is also small (L: 2 6), and the limit is the third gear; in some specific industries, such as lathes, gearboxes with gears are often used for speed adjust. Although children's speed, but the speed range is not large.

2. The stepless speed regulation of mobile phone holder motor can be divided into electromechanical type and electric type. The commonly used method in the past is to insert a mechanical stepless speed regulating device at the connection between the motor and the gearbox (mainly the belt disc type and the friction disc type). Its advantages are stable speed adjustment, uncomplicated structure, and is suitable for harsh environments. The disadvantages are that the speed range is small (generally within 1: LO), and the belt and friction disc are easy to consume and need maintenance and replacement. Regularly the latter is induction motor cascade speed regulation, rotor resistance speed regulation or DC motor speed regulation, etc.