Permanent magnet motor and oil pumping device using same

Abstract

The invention discloses a permanent magnet motor. The permanent magnet motor is characterized by comprising a stator assembly, a rotor assembly and a brake assembly, the rotor assembly comprises a spoke, a plurality of magnets, a silicon steel sheet, a hub, end rings and a conducting bar. The spoke is fixed to the side wall of the annular groove, and the silicon steel sheet is installed in the spoke. Each silicon steel sheet is provided with a plurality of first grooves and second grooves, the guide bars are installed in the first grooves, and the magnets are installed in the second grooves. The hub is fixed to one end of the spoke and installed on the inner side face of the supporting column through a rotating shaft. The end rings are located on the two sides of the silicon steel sheet, the spokes are provided with inclined holes, and positioning columns extend into the end rings from the inclined holes and at least partially extrude the end rings into the silicon steel sheet. The permanent magnet motor adopts an outer rotor permanent magnet synchronous motor structure, is provided with a plurality of pairs of magnets, and can realize low-speed high-torque rotation. The positioning columns extrude the silicon steel sheets while fixing the end rings, and the silicon steel sheets are kept in a compressed state.

Description

technical field [0001] The invention belongs to the application technology of a permanent magnet motor, in particular to a permanent magnet motor and an oil pump using the permanent magnet motor. Background technique [0002] It is known in the prior art that the multi-slot and multi-pole structure can be used to manufacture permanent magnet motors, such as CN110061592A and the like. And this type of permanent magnet motor can be used in pumping units, and its structure is more compact compared with high-speed motors. Refer to the direct traction type pumping unit of the external rotor motor of CN101696624A, but this patent does not disclose the specific structure of its permanent magnet motor . According to the prior art, the working environment of the oil pumping device is harsh, and the structure of the outer rotor makes the rotor more susceptible to external influences. The existing permanent magnet motor is difficult to meet the needs, and it is necessary to provide a...

AI Technical Summary

Problems solved by technology

And this type of permanent magnet motor can be used in pumping units, and its structure is more compact compared with high-speed motors. Refer to the direct traction type pumping unit of the external rotor motor of CN101696624A, but this patent does not disclose the specific structure of its permanent magnet motor

According to the existing technology, the working environment of the oil pumping unit is harsh, and the structure of the outer rotor makes the rotor more susceptible to external influences

The existing permanent magnet motor is difficult to meet the needs, it is necessary to provide a permanent magnet motor with a more reliable structure, which is specially used in the oil pumping unit

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