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characteristics and application of dc motor

Characteristics and application of dc motor

The dc motor is a mechanical necessity to change the speed and output torque. The dc motor is an important part of the mechanical transmission system. Now, the figure of the dc motor can be seen on all kinds of machinery, transportation industry, construction industry, machinery. In the field of processing, you can see the dc motor. So, what are the benefits of using a dc motor?


1. The use of the dc motor can effectively maintain the role of the dc motor. During operation, the dc motor receives a large torque, and when it is overloaded, it is transmitted to the dc motor as long as the overload is divided by the reduction ratio!
2, saving the cost of use, if directly by the dc motor, it may cause damage to the dc motor. When the overload is very large, the timing is slowed down first, and the dc motor only needs to change the spare parts to be able to resume operation. The cost is relatively low. If the dc motor is directly damaged, the maintenance is relatively slow and the cost is high.
3. Effectively reduce the moment of inertia, the dc motor can control the start and stop and shift in time. Increased torque through the dc motor is equivalent to increasing the input power, which can reduce the power required to input the dc motor (in the place where speed regulation is required). The dc motor in normal condition is more expensive than the dc motor, so it is necessary to use a dc motor. .
4, can effectively save energy, the use of dc motor to make the dc motor meet the output torque current reduction.
5. The speed dc motor can effectively reduce the dc motor speed and increase the torque, and output the corresponding multiplying and reducing ratio according to the dc motor.

6. Effectively reduce the load inertia of the dc motor. In terms of numerical value, the inertia is the square of the reduction ratio. Different dc motor inertia values are different.

characteristics and application of dc motor

Installation arrangement
The characteristics of the geared dc motor are high efficiency and reliability, long working life, easy maintenance and wide application. Its series can be divided into single-stage, two-stage and three-stage geared dc motor. The installation layout mainly includes expansion type, coaxial type and split type.
1. In the expansion type of the two-stage cylindrical geared dc motor, the gear is asymmetrical with respect to the support position. When the shaft is bent and twisted, the load is unevenly distributed in the tooth width, so the shaft should be designed with greater rigidity and make the gear away from the input. End or output.
2. The split type of the two-stage cylindrical geared dc motor: the position of the out-of-shaft of the split-type geared dc motor can be extended from either side, which is convenient for the overall configuration of the machine. The gears of the split-stage are machined into helical teeth, one side is right-handed, one side Left-handed to counteract axial forces. One of the shafts should be allowed to make a slight axial movement to avoid jamming the gears.
3, the characteristics of the coaxial geared dc motor: the radial size is compact, but the axial size is large. Since the intermediate shaft is large, the shaft has a large disturbance when it is loaded, so the load concentration along the tooth width is more serious. At the same time, since the center of the two-stage gear must be consistent, the bearing capacity of the high-speed gear is difficult to fully utilize, and the bearing lubrication in the middle portion of the geared dc motor is also difficult. The input and output ends of the geared dc motor are located at both ends of the same axis, which limits the overall configuration of the transmission.

 

characteristics and application of dc motor

 

 

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