The operation principle of the long-term locked torque motor is the same as that of the general squirrel-cage asynchronous motor, but the structure is different. It uses materials with high resistivity (such as brass, Constantan, etc.) as the guide bar and end ring of the rotor. Here is a simple understanding with Senli Motor Xiaobian!
YLJTorque motorThe rotor resistance is much larger than that of the ordinary squirrel cage motor, and its mechanical characteristics are different from those of the ordinary squirrel cage motor. Because of the different design parameters, the mechanical characteristics and uses of torque motors are divided into two categories: winding characteristics and constant torque characteristics.
Torque motor with winding characteristicsIt is suitable for occasions where the product needs to maintain a constant tension and the product is wound on the roller with a constant line speed in the production process, for example, on printing and dyeing machinery, the roller of winding the fabric, as the fabric continues to be wound on the roller, the diameter of the roller gradually increases, and the load increases accordingly. It can be seen from the mechanical characteristics of the torque motor that the load increases and the speed automatically decreases, thus maintaining a certain linear speed and tension to achieve the process requirements. This kind of torque motor is often used in textile, printing and dyeing, paper making, rubber, wire and cable and other aspects.
Torque motor with constant torque characteristicsIt can make the torque basically constant in the general wide speed range, and it is suitable for transmission occasions where the two speed changes and the constant torque is required. For example, in printing and dyeing machinery, when the fabric is transmitted with a number of rollers, because the fabric is not wound on the roller, but is only attached to the surface of the roller to drive it, the diameter of the roller is not changed, and the constant torque characteristics of the motor should be used on this occasion to ensure that at any speed, the torque is constant and the tension of the fabric is constant.
Torque motor allows long-term low-speed operation (even blocked), its heat is very serious, usually using an external blower forced air cooling. When using the torque motor, we should pay attention to check whether the operation of the blower is good, and there should be a good ventilation environment around it, and dry flammable materials are not allowed. Flammable dust or volatile combustible oil, etc.
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