CN203632381U

CN203632381U - Permanent magnet motor rotor iron core

Info

Publication number: CN203632381U
Application number: CN201320604469.7U
Authority: CN
Inventors: 孙德全; 袁静国; 王鹏; 王艳杰; 徐长山
Original assignee: Anhui Mingteng Permanent-Magnetic Machinery & Electrical Equipment Co Ltd
Current assignee: Anhui Mingteng Permanent-Magnetic Machinery & Electrical Equipment Co Ltd
Priority date: 2013-09-27
Filing date: 2013-09-27
Publication date: 2014-06-04
Anticipated expiration: 2023-09-27

Abstract

The utility model discloses a permanent magnet motor rotor iron core. The permanent magnet motor rotor iron core comprises an inner rotor iron core and an outer rotor iron core which sleeves the inner rotor iron core; the outer edge of the inner rotor iron core is provided with a plurality of first grooves; the inner edge of the outer rotor iron core is provided with a plurality of second grooves which are in one-to-one correspondence to the plurality of first grooves; wedge blocks are arranged inside the first grooves and the second grooves which are corresponding to each other; and gaps between the inner rotor iron core and the outer rotor iron core are connected with each other through magnetic isolation layers formed by glass fiber reinforced plastic (FRP). According to the permanent magnet motor rotor iron core of the utility model, the rotor iron core is made into the inner rotor iron core and the outer rotor iron core, and the inner rotor iron core and the outer rotor iron core are connected with each other through the glass reinforced plastic with a magnetic isolation effect in a pouring manner, and therefore, magnetic flux leakage of a rare earth permanent magnet motor with tangentially-arranged magnets can be effectively reduced, and the number of used magnets of the rare earth permanent magnet motor can be decreased, and as a result, manufacturing cost can be reduced. The rotor iron core of the utility model can better withstand a shearing force and a radial force which are generated in the operating process of the rare earth permanent magnet motor, and therefore, the rigidity and integrity of the rotor iron core can be improved.

Description

Permanent magnetic electric machine rotor iron core

Technical field

The utility model relates to a kind of rare-earth permanent magnet motor rotor core structure, belongs to technical field of motors.

Background technology

Modern rare-earth permanent-magnet electric machine all adopts higher magnetic loading, for not making in motor the excessive permanent magnetic material utilance that causes of the magnetic leakage factor of permanent magnet too low, generally can take various every magnetic measure.

Typically every magnetic measure, be every magnetic magnetic bridge, magnetic flux have been reached capacity by setting to limit the effect of leakage field at present.Less every magnetic magnetic bridge width, this position magnetic resistance is just larger, more can limit leakage flux.Make to make the punching mechanical strength variation of rotor but magnetic bridge width is crossed young pathbreaker, and shorten the useful life of punch die.

Also be a critical size every magnetic magnetic bridge length, result of calculation shows, if can not guarantee certain size every magnetic magnetic bridge length, even if magnetic bridge width is little, and also obviously the declining every magnetic effect of magnetic bridge.But after magnetic bridge length reaches certain size, then increase length, no longer include obvious variation every magnetic effect, and excessive magnetic bridge length will make rotor mechanical intensity decline, manufacturing cost improves.

The adopting non magnetic rotating shaft or add in magnetic rotating shaft every magnetic copper sheathing or aluminium cover every magnetic measure the is general of rare-earth permanent-magnet electric machine of tangential excitation, this increases the manufacturing cost of rare-earth permanent-magnet electric machine, and it is complicated that manufacturing process becomes.In recent years, some enterprise has adopted air to add the new technology every magnetic magnetic bridge every magnetic, has obtained certain effect.But in the time that the capacity of rare-earth permanent-magnet electric machine is larger, this structure makes the mechanical strength of rotor core seem not enough, the reliability decrease of rare-earth permanent-magnet electric machine.

Utility model content

In view of the above-mentioned defect existing in prior art, the utility model provides a kind of can improve the rotor core structure of magneto every magnetic property and integral rigidity.

The utility model adopts following technical scheme: a kind of rotor core, formed by internal rotor iron core and the outer rotor iron core being set in outside internal rotor iron core, in the outer rim of internal rotor iron core, be provided with multiple the first grooves, the inner edge of outer rotor iron core is provided with and multiple the first grooves multiple the second grooves one to one, between the first corresponding groove and the second groove, be provided with voussoir, the gap between internal rotor iron core and outer rotor iron core adopts connecting every magnetosphere of fiberglass reinforced plastics (fiberglass) formation.

The second groove is actually dove-tail, forms the force structure of " inlaying " with the part of falling dovetail of the voussoir that is embedded in internal rotor iron core outer rim.

Voussoir material adopts non-magnet material to make, and non-magnet material is aluminium alloy, copper alloy or stainless steel.

Compared with prior art, the feature of rotor core of the present utility model and rare-earth permanent-magnet electric machine is:

1, rotor core is made internal rotor iron core and outer rotor iron core two parts by the utility model, inner and outer Rotator iron core pours connection by having every the fiberglass of magnetic effect, effectively reduce the rare-earth permanent-magnet electric machine leakage field that tangential magnet-steel is arranged, reduce rare-earth permanent-magnet electric machine magnet steel consumption, thereby reduced manufacturing cost.

2, rotor core of the present utility model can better bear the tangential force and the radial load that in rare-earth permanent-magnet electric machine running, produce, has improved rigidity and the globality of rotor core.

Accompanying drawing explanation

Fig. 1 is rotor core schematic diagram of the present utility model;

Fig. 2 is the internal rotor iron core schematic diagram that forms the utility model rotor core;

Fig. 3 is the outer rotor iron core schematic diagram that forms the utility model rotor core;

Fig. 4 is the voussoir schematic diagram of the utility model rotor core.

Description of reference numerals

1-outer rotor iron core 2-internal rotor iron core

3-first groove 4-the second groove

5-voussoir 6-fiberglass

Embodiment

Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, but not as to restriction of the present utility model.

As shown in Figure 1, a kind of rotor core of the utility model embodiment, comprises internal rotor iron core 2 and is set in the outer rotor iron core 1 outside internal rotor iron core 2, is arranged in addition voussoir 5 between internal rotor iron core 2 and outer rotor iron core 1 and every magnetosphere fiberglass 6.

Shown in Fig. 1,2,3, in the outer rim of internal rotor iron core 2, be provided with multiple the first grooves 3, after internal rotor iron core 2 laminates, voussoir 5 is embedded in the first groove 3, expose voussoir 5 one end simultaneously.The inner edge of outer rotor iron core 1 is provided with multiple the second grooves 4, the first groove 3 is consistent with quantity, the relative position of the second groove 4, outer rotor iron core 1 is set in outside internal rotor iron core 2, the first groove 3 is alignd one by one with the second groove 4, one end that voussoir 5 exposes is simultaneously set in the second groove 4, but does not contact with the second groove 4 peripheries.Adjust the concentricity of internal rotor iron core 2 and outer rotor iron core 1, fixing, now, between internal rotor iron core 2 and outer rotor iron core 1, between voussoir 5 and outer rotor iron core 1, there is a space, filling glass steel 6 in this space, forms every magnetosphere.

The second groove is actually dove-tail, and one end that voussoir 5 exposes is the voussoir of falling dovetail, and these two parts are inlayed the force structure that formation " is inlayed " mutually.

In the present embodiment, voussoir 5 materials are aluminium alloy.

The rotor core of the present embodiment and motor, rotor core is made to internal rotor iron core and outer rotor iron core two parts, inner and outer Rotator iron core pours connection by having every the fiberglass of magnetic effect, effectively reduce the rare-earth permanent-magnet electric machine leakage field that tangential magnet-steel is arranged, reduce rare-earth permanent-magnet electric machine magnet steel consumption, thereby reduced manufacturing cost.The rotor core of the present embodiment can better bear the tangential force and the radial load that in rare-earth permanent-magnet electric machine running, produce, has improved rigidity and the globality of rotor core.

Above embodiment is only exemplary embodiment of the present utility model, is not used in restriction the utility model, and protection range of the present utility model is defined by the claims.

Claims

1. permanent magnetic electric machine rotor iron core, it is characterized in that, comprise internal rotor iron core and be set in the outer rotor iron core outside described internal rotor iron core, in the outer rim of described internal rotor iron core, be provided with multiple the first grooves, the inner edge setting of described outer rotor iron core and multiple described the first groove multiple the second grooves one to one, between corresponding described the first groove and the second groove, be provided with voussoir, gap between internal rotor iron core and outer rotor iron core, all adopt fiberglass reinforced plastics to solidify together with the gap around voussoir, form fiberglass every magnetosphere.

2. permanent magnetic electric machine rotor iron core according to claim 1, is characterized in that, described voussoir adopts non-magnet material to make, and non-magnet material is aluminium alloy, copper alloy or stainless steel.

3. permanent magnetic electric machine rotor iron core according to claim 1, it is characterized in that, described second groove of outer rotor iron core inner edge setting is actually dove-tail, forms the force structure of " inlaying " with the part of falling dovetail of the voussoir that is embedded in internal rotor iron core outer rim.