WO2023279588A1 - 一种电机转子、磁钢组装工装及方法和氢能源压缩机 - Google Patents

一种电机转子、磁钢组装工装及方法和氢能源压缩机 Download PDF

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Publication number
WO2023279588A1
WO2023279588A1 PCT/CN2021/127225 CN2021127225W WO2023279588A1 WO 2023279588 A1 WO2023279588 A1 WO 2023279588A1 CN 2021127225 W CN2021127225 W CN 2021127225W WO 2023279588 A1 WO2023279588 A1 WO 2023279588A1
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WIPO (PCT)
Prior art keywords
magnetic steel
foil
sheath
radial
plug
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PCT/CN2021/127225
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English (en)
French (fr)
Inventor
钟仁志
袁军
项懂欣
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鑫磊压缩机股份有限公司
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Publication of WO2023279588A1 publication Critical patent/WO2023279588A1/zh

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
    • F04D29/056—Bearings
    • F04D29/0563—Bearings cartridges
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
    • F04D29/056—Bearings
    • F04D29/057—Bearings hydrostatic; hydrodynamic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C32/00—Bearings not otherwise provided for
    • F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
    • H02K15/03—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H02K5/161—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields radially supporting the rotary shaft at both ends of the rotor

Definitions

  • the invention relates to the field of motor rotors, in particular to a motor rotor, a magnetic steel assembly tool and method, and a hydrogen energy compressor.
  • the motor rotor is the rotating part in the motor.
  • the motor rotor is divided into two types: inner rotor rotation mode and outer rotor rotation mode.
  • the rotation mode of the inner rotor is that the core body in the middle of the motor is a rotating body, which outputs torque (referring to the motor) or receives energy (referring to the generator).
  • the rotation mode of the outer rotor is to use the outer body of the motor as the rotating body. Different ways facilitate the application of various occasions.
  • Chinese invention patent application discloses a motor rotor shaft, a motor and a motor rotor shaft manufacturing method, including a sheath, a magnetic steel, a first shaft end piece and a second shaft end piece,
  • the sheath, the magnetic steel, the first rotating shaft end piece and the second rotating shaft end piece each have an opposite axial first end and an axial second end, and the sheath is set on the outside of the magnetic steel, and the first rotating shaft end piece is located on the magnetic
  • the axial first end of the steel and the axial first end of the sheath are sleeved outside the second axial end of the first shaft end piece, the second shaft end piece is located at the second axial end of the magnetic steel and the shaft of the sheath
  • the second end is sleeved on the outside of the first axial end of the second rotating shaft end piece.
  • the motor rotor shaft also includes a magnet for indicating the magnetization direction of the magnet when the motor rotor shaft is assembled. Magnetic positioning unit.
  • the technical scheme of the invention can avoid the phenomenon of demagnetization of the magnetic steel caused by the high temperature during hot charging in the hot charging process after magnetization first.
  • the prior art has the following deficiencies: when assembling the magnet to the magnet sheath, the magnet sheath is first heated to make it expand, and then the magnet is put into the magnet sheath, and after the magnet sheath cools down, both The interference fit between them realizes the connection between the two; in this way, the magnetic steel and the magnetic steel sheath are only connected by interference fit, and the connection strength is low; when the rotor rotates to a higher speed , The connection between the magnetic steel and the magnetic steel sheath will be loosely connected, which reduces the adaptability of the rotor. At the same time, there is no exhaust channel on the rotor. When the magnet steel is shrunk onto the magnet steel sheath, the air expanded by heat and the heated glue between multiple magnet steels cannot be discharged, which is not conducive to the assembly of the magnet steel.
  • the purpose of the present invention is: in view of the above problems, it is proposed to connect the magnetic steel sheath and the magnetic steel plug by means of interference fit and welding at the same time, so as to ensure that the magnetic steel and the magnetic steel sheath are firmly connected; at the same time, the magnetic steel plug Ventilation holes are arranged on the head to discharge hot air and heated glue, which is beneficial to a motor rotor for magnetic steel assembly, a magnetic steel assembly tool and method, and a hydrogen energy compressor.
  • a motor rotor the rotor includes magnets, magnet sheaths and magnet plugs; a plurality of magnets are stacked in the axial direction, two magnet plugs are respectively located at both ends of the stacked magnets, and the magnets
  • the inner surface of the plug fits the outer surface of the magnetic steel;
  • the magnetic steel sheath is provided with a sheath inner hole, and multiple magnetic steel and magnetic steel plugs are embedded in the inner hole of the sheath by interference fit;
  • the magnetic steel sheath The two ends of the cover are also connected by welding with the two magnetic steel plugs;
  • the magnetic steel plug is provided with a vent hole, one end of the vent hole communicates with the outside, and the other end of the vent hole passes through the inner surface of the magnetic steel plug.
  • both the magnetic steel sheath and the magnetic steel plug have a chamfered structure at the weld.
  • the magnetic steel sheath is made of titanium alloy.
  • glue is coated between a plurality of axially stacked magnetic steels.
  • the magnetic steel plug is provided with a connection hole
  • the inner wall of the connection hole is provided with internal threads
  • the connection hole is used to connect the motor rotor with other shaft segments.
  • the present invention also discloses a magnetic steel assembly tool, which is used for assembling the magnetic steel and the magnetic steel plug, and includes a magnetic steel positioning plate, jacking screws and jacking blocks;
  • the magnetic steel positioning plate is provided with The screw holes, the horizontal positioning part and the vertical positioning part perpendicular to each other, the upper surface of the horizontal positioning part and the side surface of the vertical positioning part respectively fit the outer surface of the magnetic steel;
  • On the steel positioning plate a plurality of jacking screws are respectively screwed into corresponding screw holes and their tops are connected with one end of the jacking block, and the outer surface of the other end of the jacking block fits with the outer end surface of the magnetic steel plug.
  • the horizontal positioning part and the vertical positioning part are integrally formed by a piece of processing material.
  • the present invention also discloses a magnetic steel assembly method, the method adopts the magnetic steel assembly tool, and the method includes the following steps:
  • the present invention also discloses a hydrogen energy compressor, including a motor barrel, a motor stator, a motor shaft, an air suspension radial bearing, an air suspension axial bearing, and an axial thrust plate;
  • the motor stator is fixedly embedded in the motor barrel , the motor shaft is provided with a motor rotor, and the motor rotor is aligned with the motor stator;
  • two air-suspended radial bearings are sleeved at both ends of the motor shaft to provide support and limit the motor shaft in the radial direction;
  • the axial thrust disc fixed sleeve Located on the motor shaft, the supporting parts of the air suspension axial bearing are located on both sides of the axial thrust disc, and are used for axially limiting the axial thrust disc.
  • the air-suspension radial bearing includes a bearing seat, a radial wave foil, a middle foil, a radial top foil and locking screws;
  • the bearing seat is provided with a bearing hole, a fixing groove and a screw hole, and the radial wave foil, the middle foil and the
  • the radial top foils are all in the shape of an open ring;
  • the radial wave foil is fixedly sleeved on the outer wall of the middle foil, the middle foil is sleeved on the outer wall of the radial top foil, and the outer wall of the radial wave foil is embedded in the bearing hole;
  • the middle foil Both the radial top foil and the radial top foil are provided with fixing parts protruding from their respective outer walls on one side of their respective opening ends, and the fixing parts of the middle foil and the radial top foil pass through the opening ends of the radial corrugated foils and are attached to each other.
  • the fixing part of the middle foil and the fixing part of the radial top foil are both fitted in the fixing groove, the locking screw is screwed into the screw hole, and its top is in contact with the bottom surface of the fixing part of the middle foil to connect the middle foil and the radial
  • the fixing part of the top foil is pressed into the fixing groove.
  • the magnetic steel sheath and the magnetic steel plug are connected by interference fit and welding at the same time, and the welding method has a higher connection strength.
  • the connection between the magnetic steel and the magnetic steel sheath will not In case of loose connection, the adaptability of the rotor is improved.
  • the magnetic steel plug is provided with air holes, and the heated air and the heated glue between multiple magnetic steels can be discharged through the air holes; when the magnetic steel sheath and the magnetic steel plug are welded, the welding place is also avoided.
  • the air holes and virtual welding that occur when the glue is heated and expanded during welding are beneficial to the assembly of magnetic steel.
  • Fig. 1 is a structural schematic diagram of the present invention.
  • FIGS. 1 and Figure 3 are structural schematic diagrams of the magnetic steel assembly tooling.
  • Fig. 4 is a schematic structural diagram of a hydrogen energy compressor.
  • Fig. 5 and Fig. 6 are structural schematic diagrams of air suspension radial bearings.
  • a motor rotor as shown in Figure 1 the rotor includes a magnetic steel 1, a magnetic steel sheath 2 and a magnetic steel plug 3; a plurality of magnetic steel 1 is stacked in the axial direction, and the two magnetic steel plugs 3 are respectively located The two ends of the stacked magnetic steel 1, and the inner surface of the magnetic steel plug 3 and the outer surface of the magnetic steel 1; They are all embedded in the inner hole 21 of the sheath by means of interference fit; the two ends of the magnetic steel sheath 2 and the two magnetic steel plugs 3 are also connected by welding; the magnetic steel plug 3 is provided with a vent hole 31 , one end of the vent hole 31 communicates with the outside, and the other end of the vent hole 31 passes through the inner surface of the magnetic steel plug 3 .
  • the magnetic steel sheath and the magnetic steel plug are connected by interference fit and welding at the same time, and the welding method has a higher connection strength.
  • the magnetic steel and the magnetic steel shield There will be no loose connection in the connection of the sleeve, which improves the adaptability of the rotor.
  • magnetic steel plug 3 is provided with air vent 31, and the air heated to expand and the heated glue between a plurality of magnetic steels can be discharged through air vent 31; It avoids air holes and virtual welding due to thermal expansion of glue during welding, which is beneficial to the assembly of magnetic steel.
  • Both the magnetic steel sheath 2 and the magnetic steel plug 3 have a chamfered structure at the weld, thereby increasing the contact area between the two during welding and ensuring firm welding.
  • the magnetic steel sheath 2 is made of titanium alloy. Titanium alloy material has the characteristics of low density, high strength and high heat resistance; compared with other materials, titanium alloy with the same volume is lighter, which can reduce the weight of the rotor and increase the speed of the rotor.
  • Glue is coated between multiple axially stacked magnetic steels 1 to ensure that multiple magnetic steels 1 are connected more closely.
  • the magnetic steel plug 3 is provided with a connection hole 32 , the inner wall of the connection hole 32 is provided with an internal thread, and the connection hole 32 is used for connecting the motor rotor with other shaft sections.
  • a magnetic steel assembly tool is used to assemble the magnetic steel 1 and the magnetic steel plug 3, including the magnetic steel positioning plate 4, the jacking screw 5 and the jacking block 6
  • the magnetic steel positioning plate 4 is provided with a screw hole 40, a mutually perpendicular horizontal positioning portion 41 and a vertical positioning portion 42, and the upper surface of the horizontal positioning portion 41 and the side surfaces of the vertical positioning portion 42 are respectively attached to the outer surface of the magnetic steel 1
  • a plurality of screw holes 40 are respectively located on the magnetic steel positioning plate 4 outside the two ends of the magnetic steel 1, and a plurality of tightening screws 5 are respectively screwed together with the corresponding screw holes 40 and its top is connected with one end of the tightening block 6, and the top
  • the outer surface of the other end of the tight block 6 fits with the outer end surface of the magnetic steel plug 3 .
  • the horizontal positioning part 41 and the vertical positioning part 42 are integrally formed by a piece of processing material.
  • the integrally formed horizontal positioning part 41 and vertical positioning part 42 avoid the assembly error when two parts are respectively used and are assembled with screws, and the precision is high, which can ensure the concentricity when the magnetic steel 1 and the magnetic steel plug 3 are positioned.
  • the present invention also discloses a magnetic steel assembly method, the method adopts the magnetic steel assembly tool, and the method includes the following steps:
  • a hydrogen energy compressor as shown in Figure 4 includes a motor barrel 61, a motor stator 62, a motor shaft 620, an air suspension radial bearing 63, an air suspension axial bearing 64 and an axial thrust plate 65;
  • the motor stator 62 is fixed Embedded in the motor barrel 61, the motor shaft 620 is provided with a motor rotor, and the motor rotor is aligned with the motor stator 62; two air-suspended radial bearings 63 are sleeved on both ends of the motor shaft 620 for aligning the motor shaft in the radial direction.
  • the axial thrust plate 65 is fixedly sleeved on the motor shaft 620, and the supporting parts of the air suspension axial bearing 64 are located on both sides of the axial thrust plate 65, which are used to axially limit the axial thrust plate 65 .
  • the air suspension radial bearing 63 includes a bearing seat 71, a radial wave foil 72, a middle foil 73, a radial top foil 74 and a locking screw 75;
  • the bearing seat 71 is provided with a bearing hole 711,
  • the fixing groove 712 and the screw hole 713, the radial wave foil 72, the middle foil 73 and the radial top foil 74 are all in the shape of an open ring;
  • the radial wave foil 72 is fixedly sleeved on the outer wall of the middle foil 73, and the middle foil 73 is sleeved On the outer wall of the radial top foil 74, and the outer wall of the radial wave foil 72 is embedded in the bearing hole 711;
  • the middle foil 73 and the radial top foil 74 are provided with fixing parts protruding from their respective outer walls on the side of their respective opening ends 741, the fixing part 741 of the middle foil 73 and the fixing part 741 of the radial top
  • the assembly of the radial wave foil 72, the middle foil 73 and the radial top foil 74 is pressed into the fixing groove 712 by the top of the locking screw 75.
  • the radial wave foil 72, the middle foil 73 or the radial When the top foil 74 is damaged and needs to be replaced, it is only necessary to remove the locking screw 75 to disassemble the assembly of the radial wave foil 72, the middle foil 73 and the radial top foil 74, without replacing the bearing seat 71; Thereby reducing the number of parts that need to be replaced and reducing the maintenance cost of the bearing.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Manufacture Of Motors, Generators (AREA)

Abstract

本发明涉及电机转子领域，尤其涉及一种电机转子及磁钢组装工装。该转子包括磁钢、磁钢护套和磁钢堵头；多个磁钢在轴向堆叠设置，两个磁钢堵头分别位于堆叠后的磁钢两端，并且磁钢堵头内侧面与磁钢外侧面相贴合；磁钢护套设置有护套内孔，多个磁钢和磁钢堵头都通过过盈配合方式嵌设在护套内孔内；磁钢护套两端与两个磁钢堵头之间还通过焊接方式相连接；磁钢堵头设置有透气孔，透气孔一端与外部相连通，透气孔另一端穿过磁钢堵头的内侧面。该电机转子将磁钢护套与磁钢堵头同时采用过盈配合与焊接两种方式连接，保证磁钢与磁钢护套连接牢固；同时，在磁钢堵头上设置透气孔将热空气及受热胶水排出，有利于磁钢装配。

Description

一种电机转子、磁钢组装工装及方法和氢能源压缩机 技术领域
本发明涉及电机转子领域，尤其涉及一种电机转子、磁钢组装工装及方法和氢能源压缩机。
 背景技术
电机转子是电机中的旋转部件。电机转子分为内转子转动方式和外转子转动方式两种。内转子转动方式为电机中间的芯体为旋转体，输出扭矩(指电动机)或者收入能量(指发电机)。外转子转动方式即以电机外体为旋转体。不同的方式方便了各种场合的应用。
中国发明专利申请（公开号CN105226872B，公开日：20171205）公开了一种电机转子轴、电机和电机转子轴的制造方法，包括护套、磁钢、第一转轴端件和第二转轴端件，护套、磁钢、第一转轴端件和第二转轴端件各自具有相对设置的轴向第一端和轴向第二端，护套套装于磁钢的外部，第一转轴端件位于磁钢的轴向第一端且护套的轴向第一端套装于第一转轴端件的轴向第二端的外部，第二转轴端件位于磁钢的轴向第二端且护套的轴向第二端套装于第二转轴端件的轴向第一端的外部，电机转子轴还包括在电机转子轴装配后用于对磁钢进行后充磁时指示磁钢的充磁方向的充磁定位部。本发明的技术方案可以避免先充磁后热装工艺中因热装时的高温引起的磁钢退磁的现象。
 技术问题
现有技术存在以下不足：将磁钢装配至磁钢护套时，先将磁钢护套加热使其膨胀，而后将磁钢装入磁钢护套，待磁钢护套冷却后利用两者之间的过盈配合实现两者的连接；而此种方式中磁钢与磁钢护套之间只是通过过盈配合的方式相连接，连接强度较低；当转子转动至较高的转速时，磁钢与磁钢护套的连接会出现连接不牢的情况，降低了转子的适应性。同时，转子上没有排气通道，磁钢在热套至磁钢护套时，受热膨胀的空气及多个磁钢之间的受热胶水不能排出，从而不利于磁钢的装配。
 技术解决方案
本发明的目的是：针对上述问题，提出将磁钢护套与磁钢堵头同时采用过盈配合与焊接两种方式连接，保证磁钢与磁钢护套连接牢固；同时，在磁钢堵头上设置透气孔将热空气及受热胶水排出，有利于磁钢装配的一种电机转子、磁钢组装工装及方法和氢能源压缩机。
为了实现上述的目的，本发明采用了以下的技术方案：
一种电机转子，该转子包括磁钢、磁钢护套和磁钢堵头；多个磁钢在轴向堆叠设置，两个磁钢堵头分别位于堆叠后的磁钢两端，并且磁钢堵头内侧面与磁钢外侧面相贴合；磁钢护套设置有护套内孔，多个磁钢和磁钢堵头都通过过盈配合方式嵌设在护套内孔内；磁钢护套两端与两个磁钢堵头之间还通过焊接方式相连接；磁钢堵头设置有透气孔，透气孔一端与外部相连通，透气孔另一端穿过磁钢堵头的内侧面。
作为优选，磁钢护套和磁钢堵头在焊接处都为倒角结构。
作为优选，磁钢护套采用钛合金材料。
作为优选，多个轴向堆叠的磁钢之间涂有胶水。
作为优选，磁钢堵头设置有连接孔，连接孔内壁设置有内螺纹，连接孔用于将电机转子与其他轴段相连接。
另外，本发明还公开了一种磁钢组装工装，该工装用于组装所述的磁钢和磁钢堵头，包括磁钢定位板、顶紧螺钉和顶紧块；磁钢定位板设置有螺钉孔、相互垂直的水平定位部和竖直定位部，水平定位部的上表面和竖直定位部的侧面分别与磁钢外表面相贴合；多个螺钉孔分别位于磁钢两端外侧的磁钢定位板上，多个顶紧螺钉分别与相应螺钉孔相旋合并且其顶端与顶紧块一端相连接，顶紧块另一端外表面与磁钢堵头外端面相贴合。
作为优选，水平定位部和竖直定位部由一块加工材料一体成型。
另外，本发明还公开了一种磁钢组装方法，该方法采用所述的一种磁钢组装工装，该方法包括以下的步骤：
1）将多个磁钢和磁钢堵头的相应连接侧面涂抹胶水；
2）将多个磁钢和多个磁钢堵头按照安装顺序排列并且其外表面分别贴合水平定位部的上表面和竖直定位部的侧面从而对磁钢和磁钢堵头进行定位；
3）转动多个顶紧螺钉带动磁钢两端的顶紧块移动与磁钢堵头外侧面相接触，进而将多个磁钢压紧；
4）胶水固化后，对磁钢护套加热恒温，将磁钢和磁钢堵头组件固定到磁钢护套内；
5）    采用氩弧焊机将磁钢堵头两端与磁钢护套两端坡口焊接成型。
另外，本发明还公开了一种氢能源压缩机，包括电机筒、电机定子、电机轴、空气悬浮径向轴承、空气悬浮轴向轴承和轴向推力盘；电机定子固定嵌设在电机筒内，电机轴设置有电机转子，电机转子与电机定子相对齐；两个空气悬浮径向轴承套设在电机轴两端，用于对电机轴在径向提供支撑限位；轴向推力盘固定套设在电机轴上，空气悬浮轴向轴承的支撑部位位于轴向推力盘两侧，用于对轴向推力盘进行轴向限位。
作为优选，空气悬浮径向轴承包括轴承座、径向波箔、中箔、径向顶箔和锁紧螺钉；轴承座设置有轴承孔、固定槽和螺钉孔，径向波箔、中箔和径向顶箔都为开口的圆环形状；径向波箔固定套设在中箔外壁，中箔套设在径向顶箔外壁，并且径向波箔外壁嵌设于轴承孔内；中箔和径向顶箔在各自的开口端一侧都设置有凸出于各自外壁的固定部，中箔的固定部和径向顶箔的固定部都穿过径向波箔的开口端并且相互贴合；中箔的固定部和径向顶箔的固定部都嵌合于固定槽中，锁紧螺钉旋合于螺钉孔，并且其顶端与中箔的固定部底面相接触将中箔和径向顶箔的固定部压紧在固定槽内。
 有益效果
本发明采用上述技术方案的一种电机转子、磁钢组装工装及方法和氢能源压缩机的优点是：
磁钢护套与磁钢堵头同时采用过盈配合与焊接两种方式连接，而焊接方式连接强度较高，当转子转动至较高的转速时，磁钢与磁钢护套的连接不会出现连接不牢的情况，提高了转子的适应性。同时，磁钢堵头设置有透气孔，受热膨胀的空气及多个磁钢之间的受热胶水能通过透气孔排出；对磁钢护套与磁钢堵头焊接时，焊接处也避免了由于胶水在焊接时受热膨胀而出现的气孔和虚焊等现象，从而有利于磁钢的装配。
 附图说明
图1为本发明的结构示意图。
图2、图3为磁钢组装工装的结构示意图。
图4为氢能源压缩机的结构示意图。
图5、图6为空气悬浮径向轴承的结构示意图。
L1-锁紧螺钉紧固方向、L2-内转轴转动方向。
 本发明的最佳实施方式
如图1所示的一种电机转子，该转子包括磁钢1、磁钢护套2和磁钢堵头3；多个磁钢1在轴向堆叠设置，两个磁钢堵头3分别位于堆叠后的磁钢1两端，并且磁钢堵头3内侧面与磁钢1外侧面相贴合；磁钢护套2设置有护套内孔21，多个磁钢1和磁钢堵头3都通过过盈配合方式嵌设在护套内孔21内；磁钢护套2两端与两个磁钢堵头3之间还通过焊接方式相连接；磁钢堵头3设置有透气孔31，透气孔31一端与外部相连通，透气孔31另一端穿过磁钢堵头3的内侧面。此种方式中，磁钢护套与磁钢堵头同时采用过盈配合与焊接两种方式连接，而焊接方式连接强度较高，当转子转动至较高的转速时，磁钢与磁钢护套的连接不会出现连接不牢的情况，提高了转子的适应性。同时，磁钢堵头3设置有透气孔31，受热膨胀的空气及多个磁钢之间的受热胶水能通过透气孔31排出；对磁钢护套与磁钢堵头焊接时，焊接处也避免了由于胶水在焊接时受热膨胀而出现的气孔和虚焊等现象，从而有利于磁钢的装配。
磁钢护套2和磁钢堵头3在焊接处都为倒角结构，从而增大了焊接时两者的接触面积，保证焊接牢固。
磁钢护套2采用钛合金材料。钛合金材料具有低密度、强度高和耐热性高的特点；相对比其他材料，相同体积的钛合金重量更轻，可以降低转子重量，提高转子转速。
多个轴向堆叠的磁钢1之间涂有胶水以保证多个磁钢1连接更加紧密。
磁钢堵头3设置有连接孔32，连接孔32内壁设置有内螺纹，连接孔32用于将电机转子与其他轴段相连接。
如图2、图3所示的一种磁钢组装工装，该工装用于组装所述的磁钢1和磁钢堵头3，包括磁钢定位板4、顶紧螺钉5和顶紧块6；磁钢定位板4设置有螺钉孔40、相互垂直的水平定位部41和竖直定位部42，水平定位部41的上表面和竖直定位部42的侧面分别与磁钢1外表面相贴合；多个螺钉孔40分别位于磁钢1两端外侧的磁钢定位板4上，多个顶紧螺钉5分别与相应螺钉孔40相旋合并且其顶端与顶紧块6一端相连接，顶紧块6另一端外表面与磁钢堵头3外端面相贴合。
水平定位部41和竖直定位部42由一块加工材料一体成型。一体成型的水平定位部41和竖直定位部42避免了分别采用两个零件并且用螺钉组装时的装配误差，精度高，能保证磁钢1与磁钢堵头3定位时的同心度。
另外，本发明还公开了一种磁钢组装方法，该方法采用所述的一种磁钢组装工装，该方法包括以下的步骤：
1）将多个磁钢1和磁钢堵头3的相应连接侧面涂抹胶水；
2）将多个磁钢1和多个磁钢堵头3按照安装顺序排列并且其外表面分别贴合水平定位部41的上表面和竖直定位部42的侧面从而对磁钢1和磁钢堵头3进行定位；
3）转动多个顶紧螺钉5带动磁钢1两端的顶紧块6移动与磁钢堵头3外侧面相接触，进而将多个磁钢1压紧；
4）胶水固化后，对磁钢护套2加热恒温，将磁钢1和磁钢堵头3组件固定到磁钢护套2内；
5）    采用氩弧焊机将磁钢堵头3两端与磁钢护套2两端坡口焊接成型。
如图4所示的一种氢能源压缩机，包括电机筒61、电机定子62、电机轴620、空气悬浮径向轴承63、空气悬浮轴向轴承64和轴向推力盘65；电机定子62固定嵌设在电机筒61内，电机轴620设置有电机转子，电机转子与电机定子62相对齐；两个空气悬浮径向轴承63套设在电机轴620两端，用于对电机轴在径向提供支撑限位；轴向推力盘65固定套设在电机轴620上，空气悬浮轴向轴承64的支撑部位位于轴向推力盘65两侧，用于对轴向推力盘65进行轴向限位。
如图5、图6所示，空气悬浮径向轴承63包括轴承座71、径向波箔72、中箔73、径向顶箔74和锁紧螺钉75；轴承座71设置有轴承孔711、固定槽712和螺钉孔713，径向波箔72、中箔73和径向顶箔74都为开口的圆环形状；径向波箔72固定套设在中箔73外壁，中箔73套设在径向顶箔74外壁，并且径向波箔72外壁嵌设于轴承孔711内；中箔73和径向顶箔74在各自的开口端一侧都设置有凸出于各自外壁的固定部741，中箔73的固定部和径向顶箔74的固定部741都穿过径向波箔72的开口端并且相互贴合；中箔73的固定部和径向顶箔74的固定部741都嵌合于固定槽712中，锁紧螺钉75旋合于螺钉孔713，并且其顶端与中箔73的固定部741底面相接触将中箔73和径向顶箔74的固定部741压紧在固定槽712内。此种方式中，径向波箔72、中箔73和径向顶箔74的组合件通过锁紧螺钉75顶端压紧在固定槽712内，当径向波箔72、中箔73或径向顶箔74发生损坏需要更换时，只需要卸掉锁紧螺钉75将径向波箔72、中箔73和径向顶箔74的组合件拆卸即可，而不需要对轴承座71进行更换；从而减少了需要更换零件的数量，降低了轴承的维护成本。

Claims (10)

  1. 一种电机转子，其特征在于，该转子包括磁钢（1）、磁钢护套（2）和磁钢堵头（3）；多个磁钢（1）在轴向堆叠设置，两个磁钢堵头（3）分别位于堆叠后的磁钢（1）两端，并且磁钢堵头（3）内侧面与磁钢（1）外侧面相贴合；磁钢护套（2）设置有护套内孔（21），多个磁钢（1）和磁钢堵头（3）都通过过盈配合方式嵌设在护套内孔（21）内；磁钢护套（2）两端与两个磁钢堵头（3）之间还通过焊接方式相连接；磁钢堵头（3）设置有透气孔（31），透气孔（31）一端与外部相连通，透气孔（31）另一端穿过磁钢堵头（3）的内侧面。
  2. 根据权利要求1所述一种电机转子，其特征在于，磁钢护套（2）和磁钢堵头（3）在焊接处都为倒角结构。
  3. 根据权利要求1所述一种电机转子，其特征在于，磁钢护套（2）采用钛合金材料。
  4. 根据权利要求1所述一种电机转子，其特征在于，多个轴向堆叠的磁钢（1）之间涂有胶水。
  5. 根据权利要求1所述一种电机转子，其特征在于，磁钢堵头（3）设置有连接孔（32），连接孔（32）内壁设置有内螺纹，连接孔（32）用于将电机转子与其他轴段相连接。
  6. 一种磁钢组装工装，其特征在于，该工装用于组装权利要求1所述的磁钢（1）和磁钢堵头（3），包括磁钢定位板（4）、顶紧螺钉（5）和顶紧块（6）；磁钢定位板（4）设置有螺钉孔（40）、相互垂直的水平定位部（41）和竖直定位部（42），水平定位部（41）的上表面和竖直定位部（42）的侧面分别与磁钢（1）外表面相贴合；多个螺钉孔（40）分别位于磁钢（1）两端外侧的磁钢定位板（4）上，多个顶紧螺钉（5）分别与相应螺钉孔（40）相旋合并且其顶端与顶紧块（6）一端相连接，顶紧块（6）另一端外表面与磁钢堵头（3）外端面相贴合。
  7. 根据权利要求6所述一种磁钢组装工装，其特征在于，水平定位部（41）和竖直定位部（42）由一块加工材料一体成型。
  8. 一种磁钢组装方法，其特征在于，该方法采用权利要求6所述的一种磁钢组装工装，该方法包括以下的步骤：
    1）将多个磁钢（1）和磁钢堵头（3）的相应连接侧面涂抹胶水；
    2）将多个磁钢（1）和多个磁钢堵头（3）按照安装顺序排列并且其外表面分别贴合水平定位部（41）的上表面和竖直定位部（42）的侧面从而对磁钢（1）和磁钢堵头（3）进行定位；
    3）转动多个顶紧螺钉（5）带动磁钢（1）两端的顶紧块（6）移动与磁钢堵头（3）外侧面相接触，进而将多个磁钢（1）压紧；
    4）胶水固化后，对磁钢护套（2）加热恒温，将磁钢（1）和磁钢堵头（3）组件固定到磁钢护套（2）内；
    5）采用氩弧焊机将磁钢堵头（3）两端与磁钢护套（2）两端坡口焊接成型。
  9. 一种氢能源压缩机，其特征在于，包括电机筒（61）、电机定子（62）、电机轴（620）、空气悬浮径向轴承（63）、空气悬浮轴向轴承（64）和轴向推力盘（65）；电机定子（62）固定嵌设在电机筒（61）内，电机轴（620）设置有电机转子，电机转子如权利要求1所述，电机转子与电机定子（62）相对齐；两个空气悬浮径向轴承（63）套设在电机轴（620）两端，用于对电机轴在径向提供支撑限位；轴向推力盘（65）固定套设在电机轴（620）上，空气悬浮轴向轴承（64）的支撑部位位于轴向推力盘（65）两侧，用于对轴向推力盘（65）进行轴向限位。
  10. 根据权利要求9所述一种氢能源压缩机，其特征在于，空气悬浮径向轴承（63）包括轴承座（71）、径向波箔（72）、中箔（73）、径向顶箔（74）和锁紧螺钉（75）；轴承座（71）设置有轴承孔（711）、固定槽（712）和螺钉孔（713），径向波箔（72）、中箔（73）和径向顶箔（74）都为开口的圆环形状；径向波箔（72）固定套设在中箔（73）外壁，中箔（73）套设在径向顶箔（74）外壁，并且径向波箔（72）外壁嵌设于轴承孔（711）内；中箔（73）和径向顶箔（74）在各自的开口端一侧都设置有凸出于各自外壁的固定部（741），中箔（73）的固定部和径向顶箔（74）的固定部（741）都穿过径向波箔（72）的开口端并且相互贴合；中箔（73）的固定部和径向顶箔（74）的固定部（741）都嵌合于固定槽（712）中，锁紧螺钉（75）旋合于螺钉孔（713），并且其顶端与中箔（73）的固定部（741）底面相接触将中箔（73）和径向顶箔（74）的固定部（741）压紧在固定槽（712）内。
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CN111478472A (zh) * 2020-05-20 2020-07-31 北京稳力科技有限公司 一种转子结构及采用该转子结构的电机、空压机
CN112228361A (zh) * 2020-09-18 2021-01-15 益鑫能源科技(上海)有限公司 一种空气悬浮离心鼓风机
CN213402612U (zh) * 2020-11-11 2021-06-08 中山大洋电机股份有限公司 一种高速永磁同步电机的转子结构
CN113489185A (zh) * 2021-07-07 2021-10-08 鑫磊压缩机股份有限公司 一种电机转子、磁钢组装工装及方法和氢能源压缩机

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