May 25, 2023

How to Adjust the Speed of Gear Reduction Motor?

The geared motor includes a motor and a reducer. The motor is used for transmission. After the power is turned on, the motor runs. The reducer and the motor are connected through gears, which can be used to change the speed of the motor. The gear mesh ratio is the distance between the motor and the reducer. The speed ratio, so the motor can change the running speed of the motor through the reducer. However, the speed changed here is not speed regulation, but deceleration. The deceleration and speed regulation of the gear reduction motor are two different things. Speed regulation refers to changing the power supply voltage of the DC motor to achieve the purpose of adjusting the speed, and deceleration refers to installing a reducer with a certain speed ratio on the output shaft of the DC motor to achieve deceleration.

Generally speaking, there are two types of drives for geared motors: built-in and external. Most of the built-in drive motors cannot adjust the speed. Whether the external drive can adjust the speed depends on the structure of the drive.

Electric Speed Reducer

How to adjust the speed of the gear 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 still many occasions where the speed is required to be changed, and the speed needs to be adjusted. There are two methods for speed adjustment of the gear reduction motor.

1. Stepped speed regulation is the simplest and most economical speed regulation method, but it is only limited to occasions with small and medium capacity (below 2 kW) and a small number of starts, and usually only has two speeds, which can reach The speed regulation ratio is also small (1:2-6), and the limit is three gears. In some specific industries, such as lathes, etc., gear boxes with gears are often used for step-by-step speed regulation. Although there are second-speed speeds, the speed regulation range is not large.

2. Stepless speed regulation
Stepless speed regulation methods can be divided into two types: mechanical and electrical. The common method of mechanical type is to insert a mechanical stepless speed regulation device (mainly belt pulley type and friction disk type) at the connection between the motor and the gearbox. The advantages are: The speed regulation is stable, the structure is not complicated, and it is suitable for harsh environments. The disadvantage is that the speed regulation range is small (generally within 1:10), and the belt pulley and friction disk are consumable parts, which need regular maintenance and replacement.

The electrical type is for cascade speed regulation of asynchronous motors, rotor resistance speed regulation or voltage regulation for DC motors.

When the speed of the geared motor needs to be adjusted, an appropriate speed adjustment method can be selected according to the adjustment needs and the application occasion.