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Permanent magnet high-speed motor, rotor magnetic steel fixing structure and pre-tightening method thereof

A high-speed motor and magnetic steel technology, which is applied in the shape/style/structure of the magnetic circuit, the rotating parts of the magnetic circuit, and the manufacture of the stator/rotor body, etc. Excessive sealing requirements, centrifugal clearance and vibration, etc., to achieve reliable preload, good cooling effect, and eliminate centrifugal clearance and vibration

Pending Publication Date: 2019-06-18
苏州保邦电气有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to solve the technical problems of existing permanent magnet high-speed motors, the preload and preload value of which are preloaded and fixed by the magnetic steel in the rotor structure are small, and the centrifugal gap and vibration are easy to occur
[0010] Another object of the present invention is to solve the existing permanent magnet high-speed motor, the stator and rotor of the existing ultra-high-speed permanent magnet motor adopt water cooling, its structure is complex, and the problem of too high requirements for the tightness of the rotor

Method used

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  • Permanent magnet high-speed motor, rotor magnetic steel fixing structure and pre-tightening method thereof
  • Permanent magnet high-speed motor, rotor magnetic steel fixing structure and pre-tightening method thereof
  • Permanent magnet high-speed motor, rotor magnetic steel fixing structure and pre-tightening method thereof

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Embodiment 1

[0027] Embodiment 1, referring to Fig. 1, has shown the permanent magnet high-speed motor of the present invention among the figure, and it comprises rotor 1, stator 2, machine base 3 (or claim casing), be located at both ends non-drive end cover 41 and The driving end cover 42; wherein, the rotor 1 is arranged on the non-driving end cover 41, the driving end cover 42 and the machine base 3 through the bearing seat, and the non-driving end cover 41 is fixed on the end of the machine base 3, which includes the The cover plate connected to the seat 3 and the stepped two-part sleeve extending outward, the inner end sleeve is provided with a radial bearing 51, and the outer end sleeve is provided with a bearing seat 52 for mounting the bearing 53, A bearing cover 54 is provided outside the bearing 53; the drive end cover 42 has a sleeve part for setting the bearing, and a radial bearing 55, a thrust bearing 56 and a bearing 57 are arranged in sequence from the inside to the outside...

Embodiment 2

[0036] Embodiment 2, see figure 2 , the figure shows the rotor magnet fixing structure of the permanent magnet high-speed motor, which includes a rotating shaft 11, a magnetic steel 13 arranged on the surface of the rotating shaft 11, and a magnetic isolation bridge 16 between adjacent poles; Carbon fiber sleeve 15, the carbon fiber sleeve 15 is used to fix the magnetic steel 13; as described in the above embodiment, the feature of the present invention is that the rotating shaft 11 is used to set the position of the magnetic steel 13, and the tapered section 12 with a large inside and a small outside A tapered taper sleeve 14 with a tapered hole and an interference fit with the taper section 12 is arranged on the tapered section 12. At this time, the magnetic steel 13 is arranged on the outside of the wedged taper sleeve 14 On the surface, the carbon fiber sleeve 15 is located outside the magnetic steel 13 for fixing the magnetic steel; see image 3 , the end of the wedge-s...

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PUM

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Abstract

The invention discloses a permanent magnet high-speed motor which comprises a rotor, a stator, a base and an end cover. The rotor is arranged on the base through a bearing, and the stator is arrangedon the periphery of the rotor; the rotor comprises a rotating shaft, magnetic steel arranged outside the rotating shaft and a carbon fiber sleeve used for fixing the magnetic steel. The permanent magnet high-speed motor is characterized in that the rotating shaft comprises a conical section which is used for arranging magnetic steel and is large in inside and small in outside, a wedge-shaped tapersleeve, which is matched with the conical section and is provided with a taper hole and is in interference fit with the conical section, is arranged outside the conical section, the magnetic steel isarranged on the outer surface of the wedge-shaped taper sleeve, and a carbon fiber sleeve is arranged outside the magnetic steel and used for fixing the magnetic steel. The wedge-shaped taper sleeveis provided with an oil hole extending to the inner surface of the wedge-shaped taper sleeve. The permanent magnet high-speed motor solves the problem that the magnetic steel of the permanent magnet high-speed motor in the prior art is not firmly fixed by adopting a carbon fiber sleeve binding mode, and can eliminate the possibility of centrifugal clearance and vibration generated between the magnetic steel and the rotating shaft when the rotor rotates at a high speed.

Description

technical field [0001] The invention relates to a permanent magnet high-speed motor, a rotor magnetic steel fixing structure of the motor and a pretightening method thereof, belonging to the technical field of motors. Background technique [0002] Permanent magnet high-speed motors can be used in occasions such as aerators, compressors, gas turbine direct-drive power generation systems, etc., to replace the previously commonly used combination of low-speed asynchronous motors and gearboxes. It has the characteristics of high power density, small size, light weight, high efficiency and high reliability. It has unique advantages in all aspects of performance. [0003] The rotor magnets of permanent magnet high-speed motors are generally fixed by carbon fiber winding. However, in the case of high power, there are the following technical difficulties: [0004] First, the problem of magnetic steel fixing: due to the high linear speed of the rotor, the centrifugal force generate...

Claims

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Application Information

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IPC IPC(8): H02K1/27H02K15/03H02K9/19H02K5/20H02K9/06H02K9/193
Inventor 马贤好尚栋饶靖王春彦王华军
Owner 苏州保邦电气有限公司
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