CN104767331B - 一种定子可移动式自调速永磁电机 - Google Patents

一种定子可移动式自调速永磁电机 Download PDF

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CN104767331B
CN104767331B CN201510146614.5A CN201510146614A CN104767331B CN 104767331 B CN104767331 B CN 104767331B CN 201510146614 A CN201510146614 A CN 201510146614A CN 104767331 B CN104767331 B CN 104767331B
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CN104767331A (zh
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王贤长
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Ruichang City Sen Aoda Science And Technology Ltd
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Abstract

本发明公开了一种电自调速永磁电机,包括定子、外转子、内转子、以及磁力线调节装置,定子安装在花轴上,内转子和外转子依次在定子外侧,内转子由磁钢和铁芯组成,所述磁力线调节装置使定子和内转子同时产生轴向位移,改变定子、内转子与外转子的耦合长度,调整转子切割磁力线的面积,从而控制转子的转速,实现电机的自调速。具有结构简单、使用和维护方便、节能的特点,且实现了电机无级调速。

Description

一种定子可移动式自调速永磁电机
技术领域
本发明涉及自调速永磁电机技术领域,尤其涉及一种定子可移动式自调速永磁电机。
背景技术
目前,市场上的永磁电机大多为单一结构,包括定子、转子,定子通入交流电,产生旋转磁场,转子切割旋转磁场产生力矩输出动力,永磁电机的调速大多为机械和电控方式实现调速,机械方式的调速如电机输出轴连接齿轮传动达到调速的目的,电控方式的调速如电机控制端设置变频器,通过改变输入交流电的频率达到调速的目的。其存在的不足之处在于,这种机械或电控方式实现的调速其结构复杂、成本高、维护和安装不方便,且不能达到节能的目的。
发明内容
本发明其目的就在于提供一种自调速永磁电机,解决了永磁电机自调速的问题,具有结构简单、使用和维护方便、节能的特点,且实现了电机无级调速。
本发明的技术方案为:
自调速永磁电机包括定子、外转子、内转子、以及磁力线调节装置,定子安装在花轴上,内转子和外转子依次设置在定子外侧,内转子由磁钢和铁芯组成,所述磁力线调节装置使定子和内转子同时产生轴向位移,改变定子、内转子与外转子的耦合长度,实现电机的自调速。
优选地,所述磁力线调节装置为丝杠组件或轴承组件。
优选地,所述外转子和内转子其中一个为“[”形,另一个“]”形。
优选地,所述外转子一端还设有输出轴;
优选地,所述外转子为铜套。
优选地,所述外转子的轴向长度为内转子轴向长度的1-3倍,内转子轴向长度大于等于定子的轴向长度。
优选地,所述花轴上还设有限位部件,限定定子和内转子的轴向位移。
优选地,所述磁力线调节装置包括空心花轴套、丝杆、驱动电机、主动齿轮、从动齿轮、固定盘,其中定子安装在空心花轴套上,空心花轴套内连接花轴,所述内转子经轴承安装在空心花轴套上,花轴一端经轴承连接外转子,所述空心花轴套一侧设有丝杆,丝杆经从动齿轮、主动齿轮连接驱动电机,驱动电机安装在固定盘上。
优选地,所述磁力线调节装置包括驱动电机、主动齿轮、从动齿轮、调速盘、空心花轴套、轴承,花轴连接空心花轴套,定子设置在空心花轴套外周,所述空心花轴套一端经轴承连接调速盘,调速盘经从动齿轮连接主动齿轮,连接驱动电机,磁钢驱动电机安装在固定盘上。
本发明与现有技术相比本发明具有以下优点:
由于采用了磁力线调节装置、定子安装在空心花轴套上,实现了定子可移动的结构设计,调整转子切割磁力线的面积,从而控制转子的转速,因而具有结构简单、使用和维护方便、节能的特点,且实现了电机的无级调速。
附图说明
图1为本发明实施例1的结构示意图;
图2为本发明实施例2的结构示意图。
图中:固定盘1,花轴2,丝杆3,驱动电机4,主动齿轮5,铁芯6,磁钢7,外转子8,定子9,空心花轴套10,轴承11,输出轴12,内转子13,从动齿轮14,轴承15,调速盘16。
具体实施方式
本发明可以通过发明内容中的技术方案具体实施,通过下面的实施例可以对本发明作进一步的描述。
实施例1:
如图1所示,自调速永磁电机包括定子9,定子9外侧设有由磁钢7和铁芯6组成的内转子13,定子9安装在空心花轴套10上,空心花轴套10内连接花轴2,所述内转子13经轴承安装在空心花轴套10上,花轴2一端经轴承11连接外转子8,所述空心花轴套10一侧设有丝杆3,丝杆3经从动齿轮14、主动齿轮5连接电机4,电机4安装在固定盘1上。此外,可在花轴2上设置端部设置限位部件,将定子9和内转子13的轴向位移限定在一定范围内。
当定子9通入交流电时,定子9产生旋转磁场,旋转磁场带动设有磁钢7和铁芯6的内转子13同步运行,内转子13旋转,由于外转子8切割内转子13的旋转磁场,产生环流,在内转子13和外转子8的相互作用下,外转子8也随之转动,输出力矩。
需要调速时,通过驱动电机4,带动主动齿轮5、从动齿轮14和丝杆3动作,使定子9及内转子13产生轴向位移,调整外转子8切割内转子13旋转磁场磁力线的面积,从而控制外转子8的转速,切割内转子13旋转磁场磁力线的面积越大,外转子8的转速就越高,反之,切割内转子13旋转磁场磁力线的面积越小外转子8的转速就越低。
实施例2:
在该实施例中,利用轴承15、调速盘16替代实施例1中的丝杆3,需要调速时,通过驱动电机4,带动主动齿轮5、从动齿轮14和轴承15、调速盘16动作,使定子9及内转子13产生轴向位移,调整外转子8切割内转子13旋转磁场磁力线的面积,从而控制外转子8的转速。
以上使用实施例对本发明的优选实施方式进行了描述,但本发明不限于上述实施例,在不脱离本发明的主旨的范围内可进行各种变更。

Claims (6)

1.一种自调速永磁电机,包括定子(9)、外转子(8)、内转子(13)、以及磁力线调节装置,定子(9)安装在花轴(2)上,内转子(13)和外转子(8)依次设置在定子(9)外侧,内转子(13)由磁钢(7)和铁芯(6)组成,所述外转子(8)和内转子(13)其中一个为“[”形,另一个为“]”形,所述磁力线调节装置为丝杠组件,包括空心花轴套(10)、丝杆(3)、驱动电机(4)、主动齿轮(5)、从动齿轮(14)、固定盘(1),其中定子(9)安装在空心花轴套(10)上,空心花轴套(10)内连接花轴(2),所述内转子(13)经轴承安装在空心花轴套(10)上,花轴(2)一端经轴承(11)连接外转子(8),所述空心花轴套(10)一侧设有丝杆(3),丝杆(3)经从动齿轮(14)、主动齿轮(5)连接驱动电机(4),驱动电机(4)安装在固定盘(1)上,所述磁力线调节装置使定子(9)和内转子(13)同时产生轴向位移,改变定子(9)、内转子(13)与外转子(8)的耦合长度,实现电机的自调速。
2.根据权利要求1所述的自调速永磁电机,其特征在于,所述外转子(8)一端还设有输出轴(12)。
3.根据权利要求1或2所述的自调速永磁电机,其特征在于,所述外转子(8)为铜套。
4.根据权利要求1所述的自调速永磁电机,其特征在于,所述外转子(8)的轴向长度为内转子(13)轴向长度的1-3倍,内转子(13)轴向长度大于等于定子(9)的轴向长度。
5.根据权利要求1所述的自调速永磁电机,其特征在于,所述花轴(2)上还设有限位部件,限定定子(9)和内转子(13)的轴向位移。
6.根据权利要求1所述的自调速永磁电机,其特征在于,所述磁力线调节装置替换为轴承组件,包括驱动电机(4)、主动齿轮(5)、从动齿轮(14)、调速盘(16)、空心花轴套(10)、轴承(15),花轴(2)连接空心花轴套(10),定子(9)设置在空心花轴套(10)外周,所述空心花轴套(10)一端经轴承(15)连接调速盘(16),调速盘(16)经从动齿轮(14)连接主动齿轮(5),连接驱动电机(4),驱动电机(4)安装在固定盘(1)上。
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CN108462367A (zh) * 2018-04-10 2018-08-28 辽宁壮龙无人机科技有限公司 调速器、飞行器调速系统及飞行器
CN108718122A (zh) * 2018-06-06 2018-10-30 林峭 一种兼顾高速和低速性能的电机
CN111216259A (zh) * 2020-03-16 2020-06-02 严东芳 一种水晶加工用切割打磨一体设备

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CN2112903U (zh) * 1991-11-21 1992-08-12 重庆建筑工程学院 电机定、转子轴向相对位置的调节机构
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WO2007128742A1 (de) * 2006-05-04 2007-11-15 Siemens Aktiengesellschaft Elektrische maschine, insbesondere permanenterregter synchronmotor mit einstellbarer feldschwächung
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