Speed ​​regulation Method Of Reduction Motor

The gear reduction motor is a fixed speed reduction motor. Once the speed ratio is selected and the motor is selected, the final output speed is fixed. However, in actual use, there are many occasions where the speed is required to change, such as the spindle speed of the lathe, the stirring shaft speed of various agitators, and the conveyor speed when conveying different items. How to adjust the speed is a topic of great concern to engineering and technical personnel. The following is a brief description of various speed regulation methods used in engineering.
1. Stepped speed regulation Variable speed regulation is the simplest and most economical speed regulation method. But it is limited to small and medium capacity (below 2kw) and occasions with few starts. Usually there are only two speeds, and the speed ratio that can be achieved is also small (1:2-6), and the limit is three gears; in some specific industries, such as lathes, gear boxes with gears are often used for stepless speed regulation. Although there are several speeds, the speed regulation range is not large.
2. Stepless speed regulation can be divided into mechanical and electrical types. The former is commonly used to insert a mechanical stepless speed regulation device (mainly belt pulley type and friction disk type) at the connection between the motor and the gear box. Its advantages are stable speed regulation, simple structure, and suitability for harsh environments; its disadvantages are small speed regulation range (generally within 1:10), and the belt and friction disc are consumable parts that require regular maintenance and replacement. The latter is cascade speed regulation of asynchronous motors, rotor resistance speed regulation, or voltage regulation of DC motors.