CN205670738U - A kind of permanent magnet rotor structure - Google Patents

A kind of permanent magnet rotor structure Download PDF

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Publication number
CN205670738U
CN205670738U CN201620538012.4U CN201620538012U CN205670738U CN 205670738 U CN205670738 U CN 205670738U CN 201620538012 U CN201620538012 U CN 201620538012U CN 205670738 U CN205670738 U CN 205670738U
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China
Prior art keywords
rotor
permanent magnet
core
rotating shaft
partition
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CN201620538012.4U
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Chinese (zh)
Inventor
张绍睿
范超
杜小锋
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XIANGYANG HANGLI ELECTROMECHANICAL TECHNOLOGY DEVELOPMENT Co Ltd
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XIANGYANG HANGLI ELECTROMECHANICAL TECHNOLOGY DEVELOPMENT Co Ltd
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Abstract

A kind of permanent magnet rotor structure, including rotating shaft, it is enclosed within rotating shaft upper rotor part iron core, it is integral that rotor core is connected shape by least 2 sections of core packets through cage bar and end ring, each core packet includes sleeve rotor section, be loaded in sleeve rotor section at least 2 to the permanent magnet of pole, rotor partition, the magnetic pole of the permanent magnet of adjacent two core packets is identical, and sleeve rotor section is formed by stacking by multi-disc rotor punching.The each parts of this utility model rotor become a firm entirety by cast aluminium cage bar and cast aluminium end ring, this structure is when increasing the frictional force of segmented rotor section and rotor partition to overcome rotor to rotate while the centrifugal force of rotor punching and permanent magnet, also increase the starting torque of motor, improve the starting performance of motor.This utility model has that compact conformation, power density be big, dependable performance, the advantage of length in service life.

Description

A kind of permanent magnet rotor structure
Technical field
This utility model relates to a kind of permanent magnet rotor structure.
Background technology
Permasyn morot is pressed on rotor with or without starting winding, can be divided into without start the motor of winding and have starting around The motor of group, the former is frequently referred to speed governing permasyn morot, and the latter is frequently referred to asynchronous starting permanent magnet synchronous motor.Asynchronous Starting and permanent magnet motor can be not only used for speed governing operation and can utilize again produced by starting winding asynchronous under a certain frequency and voltage Torque starting, when making in the drive system of frequency-adjustable, forms a speed governing permanent-magnet synchronous with damping (starting) winding Motor.
According to permanent magnet in the difference of rotor-position, the rotor magnetic circuit structural figure of permasyn morot generally can be divided into three Kind: surface-type, built-in and Lundell.
In surface-type rotor magnetic circuit structural, permanent magnet is generally in tile shape, and is positioned on the outer surface of rotor core, permanent magnetism Body provides the direction of magnetic flux to be radially.Claw-pole rotor magnetic structure is generally by the ring flange of two band pawls and an annular Permanent magnet is constituted.The p-m rotor manufacturing process of both structures is simple, low cost, applies relatively broad, but because of rotor surface Starting winding cannot be laid, without asynchronous starting capability, it is impossible to for asynchronous starting permanent magnet synchronous motor.
In built-in rotor magnetic structure, permanent magnet is usually located in internal rotor, permanent magnet outer surface and stator core Have in the pole shoe that ferromagnetic material is made between circle, pole shoe has electric conductor play damping and priming, dynamic, steady-state behaviour is good, extensively The general permasyn morot being applied to require asynchronous starting ability.
Built-in rotor magnetic structure can be divided into again radial, tangential and hybrid.Radial rotor magnetic circuit structural is forever Magnet axial inserts permanent magnet trough, and by limiting leakage magnetic flux every magnetic magnetic bridge, but exist when electromotor series is more, radial Structure is not provided that enough every pole magnetic fluxs.Mixed rotor magnetic circuit structural need to use more every magnetic magnetic bridge every magnetic, manufacture work Skill is complicated, and the mechanical strength of rotor punching has declined simultaneously.The available bigger every pole magnetic of tangential rotor magnetic structure Logical, but magnetic leakage factor is relatively big, when general employing is axially inserted into the mounting means of permanent magnet, due to the impact of rotor end ring size, The radial height of permanent magnet is subject to certain restrictions, and the volume of motor so can be made to increase, the manufacturing process of motor and manufacture Relatively costly.
Summary of the invention
Goal of the invention of the present utility model is to overcome the above-mentioned deficiency of prior art to provide a kind of compact conformation, power Density is big, the asynchronous starting permanent magnet synchronous motor magnet steel built-in tangential permanent magnetic rotor structure of dependable performance, length in service life.
The technical solution of the utility model is: including rotating shaft, be enclosed within rotating shaft upper rotor part iron core, rotor core is by least 2 It is integral that section core packet connects shape through cage bar and end ring, and each core packet includes sleeve rotor section, is loaded in sleeve rotor section At least 2 permanent magnets to pole, the magnetic pole of the permanent magnet of adjacent two core packets is identical, and sleeve rotor section is by multi-disc rotor punching superposition Form.
Described rotor core is respectively arranged at two ends with end rotor partition, be provided with between adjacent two core packets center roller every Sheet.
Hold-down bars is plugged on core packet, end rotor partition, center roller partition.
Described end ring is positioned at rotor core two ends, and cage bar runs through rotor core, end ring and cage bar and is fixed into by rotor core One is overall.
Described rotor punching is provided with the peace that rotating shaft installing hole, permanent magnet mounting groove, hold-down bars hole one are corresponding with cage bar Dress hole one, end rotor partition, center roller partition are provided with the peace that rotating shaft installing hole, hold-down bars hole two are corresponding with cage bar Dress hole two, hold-down bars is plugged in hold-down bars hole one, hold-down bars hole two.
Described hold-down bars two ends and the riveting of end rotor partition.
Described permanent magnet mounting groove is connected with rotating shaft installing hole, must use customization frock when installing permanent magnet, will forever Magnet loads the permanent magnet trough of sleeve rotor section from the inner circle of rotor core.
Described rotor core is loaded in rotating shaft through magnetism-isolating loop.
This utility model, by particular design permanent magnet mounting groove and by the way of rotating shaft installing hole assembles permanent magnet, subtracts The leakage magnetic flux of few tangential rotor magnetic structure, reduces magnetic leakage factor, is provided that bigger permanent magnet space simultaneously, improves electronic The power density of machine and the output-constant operation scope of extension motor.By rotor partition and the design of hold-down bars, assembling, increase The strong mechanical strength of p-m rotor, this architecture is in high-speed permanent magnet motor.This utility model tangential permanent magnetic rotor structure By cast aluminium end ring and cast aluminium cage bar, rotor core being compacted into an entity, this structure increases segmented rotor punching and rotor When the frictional force of partition is to overcome rotor to rotate while the centrifugal force of rotor punching and permanent magnet, also increase the starting of motor Torque, improves the starting performance of motor, is suitable for the load behavior requiring starting torque big.Iron core is strained with hold-down bars, Strengthen rotor mechanical strength, simultaneously simple in construction, it is simple to install.
Accompanying drawing explanation
Fig. 1 is rotor punching schematic diagram.
Fig. 2 is rotor partition schematic diagram.
Fig. 3 is the structural representation of rotor core.
Fig. 4 is the sectional view of Fig. 3.
Fig. 5 is schematic diagram of the present utility model.
Detailed description of the invention
In Fig. 1, rotor punching (3) having four built-in tangential permanent magnetic body grooves, cylindrical is evenly equipped with 24 circular cage cylindrical voids, Bottom land does not cuts through rotor punching cylindrical, and rotor punching inner circle is cut through by notch.This structure is provided that bigger permanent magnet space, carries The power density of high motor and the output-constant operation scope of extension motor.Uniform four circular holes in the middle of punching, are used for passing through Hold-down bars (4), rotor punching (3), rotor partition (2) are fixed on one, enhance the machine of rotor core (6) by hold-down bars (4) Tool intensity.Rotor punching (3) uses the ferromagnetic material that magnetic property is good to make.
In Fig. 2, rotor partition (2) cylindrical is evenly equipped with 24 circular cage cylindrical voids, and middle uniform four circular holes, for by solid Fixed rod (4).Rotor partition (2) is similar to rotor punching structure, does not simply process four built-in tangential permanent magnetic body grooves, rotor Partition (2) uses non-magnet material, and rotor core (6) is isolated into 4 sections of rotor units, and rotor partition (2) strengthens rotor structure Intensity while also by permanent magnet (5) isolate, reduce tangential rotor magnetic structure leakage magnetic flux, reduce magnetic leakage factor.
Fig. 3, in 4, it is four sections that rotor punching (3) averagely laminates, and between every section by rotor partition (2) separately, turns when laminating The each fixing a piece of rotor partition (2) in two ends, sub-core packet left and right, rotor axial needs 5 pieces of rotor partitions (2) altogether.Rotor hold-down bars (4) axially across rotor core (6), to strengthen the mechanical strength of rotor, it is adaptable to the rotor of high speed rotating, simple in construction, just In installation, it is ensured that the reliability service of motor.In rotor punching (3), 24 circular cage cylindrical voids use cast aluminium cage bar, after cast aluminium completes The each parts of rotor become a firm entirety by cast aluminium cage bar (1) and cast aluminium end ring (9), and this structure turns in increase segmentation When the frictional force of subelement and rotor partition is to overcome rotor to rotate while the centrifugal force of rotor punching and permanent magnet, also increase Add the starting torque of motor, improve the starting performance of motor, be suitable for the load behavior requiring starting torque big.Then will Hold-down bars (4) passes rotor core (6), rivets tightly in two ends.By the special frock of customization, by permanent magnet (5) from rotor core (6) Inner circle be sequentially placed into permanent magnet trough.
In Fig. 5, rotating shaft (8) uses ordinary steel, to reduce motor cost, but due to the needs every magnetic, in rotor core (6) And between rotating shaft (8), need to increase the magnetism-isolating loop (7) being made up of non-magnet material, a kind of asynchronous starting permanent magnet synchronous motor of composition Permanent magnet rotor structure.Rotor core (6) is installed in the rotating shaft (8) of magnetism-isolating loop (7).
Implementation process is as follows:
By Fig. 1, Fig. 2 processing rotor punching (3) and rotor partition (2), averagely being laminated by rotor punching as shown in Figure 3 is four Section, between every section by rotor partition (2) separately, each fixing a piece of rotor partition (2) in two ends, rotor left and right, rotor axial when laminating Need 5 pieces of rotor partitions (2) altogether.
After having laminated, carry out aluminum process process.In rotor punching (3), 24 circular cage cylindrical voids use cast aluminium cage bar, After cast aluminium completes, rotor unit becomes a firm entirety with rotor partition by cast aluminium end ring (9) and circular cage bar (1).
By hold-down bars (4) axially across rotor core (6), rivet tightly in two ends.Hold-down bars (4) is strong in order to the machinery strengthening rotor Degree, is suitable for the rotor of high speed rotating, it is ensured that the reliability service of motor.
By the special frock of customization, permanent magnet (5) is sequentially placed into each rotor unit from the inner circle of rotor core (6) In permanent magnet trough.
Rotating shaft (8) uses ordinary steel, to reduce motor cost, but due to the needs every magnetic, in rotor core (6) and rotating shaft (8) need between to increase the magnetism-isolating loop (7) being made up of non-magnet material.First magnetism-isolating loop (7) is fixed in rotating shaft (8), then will turn Sub-iron core (6) is installed in the rotating shaft (8) equipped with magnetism-isolating loop (7).

Claims (8)

1. a permanent magnet rotor structure, it is characterised in that: include rotating shaft (8), be enclosed within rotating shaft upper rotor part iron core (6), rotor core (6) connected shape by least 2 sections of core packets through cage bar and end ring integral, each core packet include sleeve rotor section, be loaded on hollow On rotor section at least 2 permanent magnet to pole, the magnetic pole of the permanent magnet of adjacent two core packets is identical, and sleeve rotor section is turned by multi-disc Sub-punching (3) is formed by stacking.
Permanent magnet rotor structure the most according to claim 1, it is characterised in that: described rotor core (6) is respectively arranged at two ends with End rotor partition, is provided with center roller partition between adjacent two core packets.
Permanent magnet rotor structure the most according to claim 2, it is characterised in that: hold-down bars 4 is plugged in core packet, end rotor On partition, center roller partition.
Permanent magnet rotor structure the most according to claim 1, it is characterised in that: described end ring is positioned at rotor core two ends, cage Bar runs through rotor core, end ring and cage bar to be fixed integral by rotor core.
Permanent magnet rotor structure the most according to claim 4, it is characterised in that: described rotor punching (3) is provided with rotating shaft peace The installing hole one that dress hole, permanent magnet mounting groove, hold-down bars hole one are corresponding with cage bar, end rotor partition, center roller partition Being provided with the installing hole two that rotating shaft installing hole, hold-down bars hole two are corresponding with cage bar, hold-down bars 4 is plugged in hold-down bars hole one, solid Fixed rod Kong Erzhong.
Permanent magnet rotor structure the most according to claim 3, it is characterised in that: described hold-down bars 4 two ends and end rotor every Sheet rivets.
Permanent magnet rotor structure the most according to claim 5, it is characterised in that: described permanent magnet mounting groove and rotating shaft installing hole It is connected.
Permanent magnet rotor structure the most according to claim 1, it is characterised in that: described rotor core (6) fills through magnetism-isolating loop (7) In rotating shaft (8).
CN201620538012.4U 2016-06-06 2016-06-06 A kind of permanent magnet rotor structure Active CN205670738U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620538012.4U CN205670738U (en) 2016-06-06 2016-06-06 A kind of permanent magnet rotor structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620538012.4U CN205670738U (en) 2016-06-06 2016-06-06 A kind of permanent magnet rotor structure

Publications (1)

Publication Number Publication Date
CN205670738U true CN205670738U (en) 2016-11-02

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107222070A (en) * 2017-06-23 2017-09-29 江苏航天动力机电有限公司 Compact asynchronous starting permagnetic synchronous motor segmented rotor processing technology

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107222070A (en) * 2017-06-23 2017-09-29 江苏航天动力机电有限公司 Compact asynchronous starting permagnetic synchronous motor segmented rotor processing technology

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