Fabricated rotor rare-earth permanent magnet torque motor

Abstract

The invention provides a fabricated rotor rare-earth permanent magnet torque motor. The fabricated rotor rare-earth permanent magnet torque motor comprises a stator, a rotor, an end cover, a hollow rotor shaft, a double-barrel non-magnetic rotor bracket formed by sleeving a small barrel in a big barrel, magnetic pole shoes embedded at the outer edge of the rotor bracket at equal intervals and in a spacing manner and a rare-earth permanent magnet, wherein an upper end plate and a lower end plate both made of a non-magnetic material and used for fixing a permanent magnet are mounted on the two ends of the rotor respectively. Due to such the design, the assembling technology of the motor rotor is better, the rotor is lighter in weight, the rotational inertia is lower, the permanent magnet material is less, the utilization rate of the permanent magnet is higher, the leakage flux is lower, the reliability is higher and permanent demagnetization can be avoided. Therefore, the comprehensive performances of the low-speed high-power torque motor are improved greatly.

Description

technical field [0001] The invention relates to a rare earth permanent magnet torque motor, in particular to a rotor of the rare earth permanent magnet torque motor. Background technique [0002] Rare earth permanent magnet torque motors have attracted great attention from experts at home and abroad for their advantages such as high efficiency and energy saving, high power-to-weight ratio, high overload capacity, high reliability, easy speed regulation, maintenance-free, and long life. However, the existing technology of rare earth permanent magnet torque motors has not fully tapped the potential in the application of high power and high torque. At present, there are still problems such as low utilization rate of motor rotor materials, heavy weight, complex assembly process of surface-mounted magnetic steel, and poor reliability. In addition, there are no more improvements in reducing magnetic flux leakage and permanent demagnetization, thus limiting the development of rare ...

AI Technical Summary

Problems solved by technology

However, the existing technology of rare earth permanent magnet torque motors has not fully tapped the potential in high power and high torque applications. At present, there are still problems such as low utilization rate of motor rotor materials, heavy weight, complex assembly process of surface-mounted magnetic steel, and poor reliability. In addition, there are no more improvements in reducing magnetic flux leakage and permanent demagnetization, thus limiting the development of rare earth permanent magnet torque motors in various fields

For example, in the field of oil production, it is difficult to realize the application of rare earth permanent magnet torque motor direct drag large displacement screw pump oil production technology

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