How to choose gear reducer
齿轮减速机的选择原则，主要是根据齿轮减速机本身和负载的特点，以及电源的性质来选用。在使用过程中，不可随意更换与齿轮减速机铭牌不相符的电动机。
1. Choose according to the power supply
There are two types of power supply for the motor: single-phase and three-phase. Most single-phase power supplies are 220 volts, and in many occasions, 12,24,36,42, 110, 100, 220 or 380 volts are also used.In foreign countries, there are also 36,42 volts or 220 volts.Three-phase motors mostly use three-phase 50 volt power, but some use 60, 5 or XNUMX volt three-phase power.In terms of frequency, my country and some countries use XNUMX Hz, and some countries in the world, such as Europe and the United States, also use XNUMX Hz.Therefore, before use, you should first recognize whether the motor's operating voltage (nameplate rated voltage) and frequency are consistent with the power supply. If the power supply voltage is too much higher or lower than the motor's operating voltage, the motor will be burned.When providing the design, the allowable power supply voltage fluctuation of the motor ±XNUMX% does not affect the normal operation of the motor.In order to ensure that the motor can work normally, it does not change its performance.Slime dryer
2. Choose according to the starting situation of the motor
For a motor that starts frequently, that is, the starting frequency is 10-20 times/min, a larger capacity motor should be appropriately selected when selecting a motor.Because the starting current of the motor is relatively large when starting, the corresponding input power is relatively large. Therefore, the selection of a larger power motor will make the load power smaller than the motor power, so the temperature rise of the motor will not be too high.
3. Choose according to the matching situation with the load
When using a capacitor to run an asynchronous motor, its power should be roughly the same as the load power, and there should not be too much margin, because the loss of a capacitor running motor at or near no load is relatively greater, so the temperature rise is also It is relatively high. If it is operated for a long time under this condition, the temperature of the motor may exceed the allowable temperature rise, which will accelerate the insulation aging of the motor, and may cause the motor to burn out in serious cases.
4. Choose according to the over torque of the load
In the case of frequent load over-torque, it is not advisable to use single-phase electric limit start asynchronous motor and capacitor start asynchronous motor, because when the load torque is greater than the rated torque of the motor, the speed of the motor may be reduced to 75 %-80% synchronous speed or lower, at this time the centrifugal switch of the motor may be closed again.If this happens more frequently or the time lasts longer each time, the starter winding will be put into work again.In the design, the starting winding of the motor is only used for a short time, and the current density is selected relatively high. If the working time is too long, the starting winding may be burned out, so only other types of motors can be used.
