阅读说明：本技术 永磁直流电动机 (Permanent-magnet DC motor ) 是由 刘成福 于 2018-07-26 设计创作，主要内容包括：本发明公开了一种永磁直流电动机,属于永磁直流电动机领域。它的技术贡献在于：定子的机壳用铝合金制成圆筒形,中部圆周有四个间距及大小尺寸相同的孔洞。四个“凸”形软铁磁极内外为弧形,装在机壳的四个孔洞中,内弧配合转子。四个分别装有内外弧形铁板的弧形永磁铁,安装在四个软铁磁极的外弧上面。四个长方形铝合金隔条,安装在机壳外部的四个永磁铁之间。四个长方形导磁板安装在隔条外部及两磁极外弧形铁板之间；采用普通四极直流电动机转子为四极永磁直流电动机转子；用两个直流电磁铁配置在永磁铁的内外弧形铁板的两端,采用相吸的方式,安装、拆卸永磁铁很方便,因此可以制造大功率的四极永磁直流电动机。(The invention discloses a permanent magnet direct current motor, and belongs to the field of permanent magnet direct current motors. The technical contribution of the method is as follows: the casing of the stator is made of aluminum alloy into a cylinder shape, and the circumference of the middle part of the casing is provided with four holes with the same space and size. The four convex soft iron magnetic poles are arc-shaped inside and outside and are arranged in four holes of the casing, and the inner arcs are matched with the rotor. Four arc permanent magnets respectively provided with inner and outer arc iron plates are arranged on the outer arcs of the four soft iron magnetic poles. And the four rectangular aluminum alloy division bars are arranged among the four permanent magnets outside the shell. The four rectangular magnetic conduction plates are arranged outside the division bars and between the two magnetic pole outer arc iron plates; the common four-pole DC motor rotor is a four-pole permanent magnet DC motor rotor; two direct current electromagnets are arranged at two ends of the inner arc iron plate and the outer arc iron plate of the permanent magnet, and the permanent magnet is convenient to mount and dismount by adopting a mutual attraction mode, so that the high-power quadrupole permanent magnet direct current motor can be manufactured.)

1. A permanent magnet direct current motor is composed of a stator and a rotor, and is characterized in that: a casing (1) of a permanent magnet direct current motor is made into a cylinder by aluminum alloy, the circumference of the middle part of the cylinder is provided with four rectangular holes with the same space and size, a soft iron magnetic pole (2) is punched into a convex shape by a silicon steel sheet, the large and small cross sections are arc-shaped and are overlapped, the small cross section is an outer arc, the large cross section is an inner arc, the total number of the small cross sections is four, the outer arcs are outwards and respectively installed in the rectangular holes in the middle part of the inner circle of the casing (1), the inner and outer sides of the permanent magnet (3) are arc-shaped, the two ends and the two sides are plane-shaped, the total number of the four permanent magnets is four, two poles of each permanent magnet (3) are provided with an inner arc-shaped iron plate (4) and an outer arc-shaped iron plate (5), the inner arc-shaped iron plate (4) and the outer arc of the soft iron magnetic pole (2) are assembled and, the magnetic conduction plates (13) are pressed into arcs by rectangular iron plates, the total number of the magnetic conduction plates is four, the magnetic conduction plates are arranged between two magnetic poles of the outer arc iron plates outside the division bars (12), the base (6) is made of cast iron and fixed outside the two outer arc iron plates (5) at the lower part of the shell by a screw rod, a front end cover (7) and a rear end cover (9) are both made into a disc shape by cast iron, the rotor adopts a common four-pole direct-current motor rotor, a rotor iron core, a coil (15) and a commutator (16) are arranged on a rotor shaft (14) together, and four electric brush assemblies are arranged on the inner side of the rear end cover (8) and are matched with. The front end cover (7) and the rear end cover (8) are mounted in the same way as a rotor of a common direct current motor; two direct current electromagnets are arranged at two ends of the inner arc iron plate and the outer arc iron plate of the permanent magnet, and the permanent magnet is installed and disassembled in a mutual attraction mode.

The technical field is as follows:

the invention relates to a permanent magnet direct current motor, in particular to a quadrupole permanent magnet direct current motor.

Background

The permanent magnet DC motor is an improvement of the existing dipolar permanent magnet DC motor, and stator dipolar permanent magnet poles are replaced by stator quadrupole permanent magnet poles, thereby shortening the magnetic circuit and enhancing the magnetic force. The invention belongs to a four-pole permanent magnet DC motor, adopts a common four-pole DC motor rotor, and can enlarge the power of the existing two-pole permanent magnet DC motor, and has short magnetic circuit, strong magnetic force and more electric energy saving. In the permanent magnet direct current motor in the prior art, the permanent magnet is usually made into a tile shape, the shell is made into a cylinder shape, the outer arc of the tile-shaped permanent magnet is arranged on the inner wall of the cylinder, and the inner arc is matched with the rotor.

Disclosure of Invention

The invention aims to provide a permanent magnet direct current motor, and belongs to a quadrupole permanent magnet direct current motor in the field of permanent magnet direct current motors. It comprises stator and rotor, and its technical contribution lies in: the casing of the stator is made of aluminum alloy into a cylinder shape, and the circumference of the middle part of the casing is provided with four rectangular holes with the same space and size. The four convex soft iron magnetic poles are arc-shaped inside and outside and are arranged in four holes of the casing, and the inner arcs are matched with the rotor. Four arc permanent magnets with inner and outer arc iron plates are respectively arranged on the outer arcs of the four soft iron magnetic poles, and four rectangular aluminum alloy division bars are arranged among the four permanent magnets outside the casing. The four rectangular magnetic conduction plates are arranged outside the division bars and between the two magnetic pole outer arc iron plates; the rotor of the common four-pole direct current motor is used as the rotor of the four-pole permanent magnet direct current motor; two direct current electromagnets are arranged at two ends of the inner arc iron plate and the outer arc iron plate of the permanent magnet, and the permanent magnet is convenient to mount and dismount by adopting a mutual attraction mode, so that a high-power four-pole permanent magnet direct current motor can be manufactured.

In order to solve the technical problem, the four-pole permanent magnet direct current motor comprises a stator and a rotor. The components that make up the stator include: the magnetic brush comprises a shell, a soft iron magnetic pole, a permanent magnet, an inner arc iron plate, an outer arc iron plate, a base, a front end cover bearing, a rear end cover bearing, a brush assembly, a parting strip, a magnetic conduction plate and the like. The components that make up the rotor include: rotor shaft, rotor core and coil, commutator, etc. The casing is made of aluminum alloy into a cylinder, and four rectangular holes with the same space and size are formed in the middle of the cylinder in the circumferential mode. The soft iron magnetic pole is made of silicon steel sheets into a convex shape, the large and small cross sections are arc-shaped and are overlapped, the small cross section is an outer arc, the large cross section is an inner arc, and the number of the outer arcs is four, and the outer arcs are respectively arranged in a rectangular hole in the middle of the inner circle of the shell. The inner and outer of the permanent magnet are arc, two ends and two sides are plane, four, each permanent magnet is provided with an inner arc iron plate and an outer arc iron plate at two poles, the inner arc iron plate is matched and fixed with the outer arc surface of the soft iron magnetic pole, the inner arc of the soft iron magnetic pole is matched with the rotor, and the soft iron magnetic pole is magnetized into a stator magnetic pole through the permanent magnet. The partition bars are made of aluminum alloy into rectangles, and are arranged between two magnets outside the shell, and the number of the partition bars is four. The magnetic conduction plates are formed by pressing rectangular iron plates into arcs, and are fixed outside the parting strips and between the two magnetic pole outer arc iron plates. The machine seat is made of cast iron and is fixed outside the two outer arc iron plates at the lower part of the machine shell by a screw rod. A front end cover and a rear end cover are both made of cast iron into a disc shape, the outer diameter of a bearing of the front end cover is arranged in a bearing seat of the inner diameter of the front end cover, one end of a rotor shaft is arranged in the inner diameter of the bearing of the front end cover, the inner side of the outer diameter of the front end cover is assembled with the front end of a machine shell, a bearing of the rear end cover is arranged in the bearing seat of the inner diameter of the rear end cover, one end of the rotor shaft with a commutator is arranged in the bearing of the. The rotor adopts a common four-pole DC motor rotor, a rotor iron core, a coil and a commutator are installed on a rotor shaft, and the commutator is installed on the rotor shaft matched with one end of a rear end cover. Four brush assemblies are mounted on the inside of the rear end cap and cooperate with the commutator. Two direct current electromagnets are arranged at two ends of the inner arc iron plate and the outer arc iron plate of the permanent magnet, and the permanent magnet is convenient to install and disassemble in a mutual attraction mode, so that a high-power four-pole permanent magnet direct current motor can be manufactured.

The invention will be described in further detail with reference to the drawings attached hereto.

Drawings

FIG. 1 is an axial cross-sectional view of one embodiment of the present invention.

Fig. 2 is a transverse cross-sectional view of one end of the commutator of fig. 1.

In the figure: the motor comprises a machine shell 1, a soft iron magnetic pole 2, a permanent magnet 3, an inner arc iron plate 4, an outer arc iron plate 5, a machine base 6, a front end cover 7, a front end cover bearing 8, a rear end cover 9, a rear end cover bearing 10, an electric brush assembly 11, a parting bead 12, a magnetic conduction plate 13, a rotor shaft 14, a rotor core 15, a coil and a commutator 16.

The specific implementation mode is as follows:

as shown in fig. 1 and 2: the invention relates to a permanent magnet direct current motor, which consists of a stator and a rotor, wherein the components forming the stator comprise: the motor comprises a shell 1, a soft iron magnetic pole 2, a permanent magnet 3, an inner arc iron plate 4, an outer arc iron plate 5, a base 6, a front end cover 7, a front end cover bearing 8, a rear end cover 9, a rear end cover bearing 10, an electric brush assembly 11, a parting strip 12, a magnetic conduction plate 13 and the like. The components that make up the rotor include: 14 rotor shaft, 15 rotor core and coil, 16 commutator, etc. The permanent magnet direct current motor is characterized in that: a casing 1 of a permanent magnet direct current motor is made into a cylinder by aluminum alloy, the circumference of the middle part of the cylinder is provided with four rectangular holes with the same space and size, a soft iron magnetic pole 2 is made into a convex shape by punching silicon steel sheets, the large and small cross sections are arc-shaped and are overlapped, the small cross section is an outer arc, the large cross section is an inner arc, the total number of the four outer arcs are outwards arranged in the rectangular hole at the middle part of the inner circle of the casing 1 respectively, the inner and outer sides of the permanent magnet 3 are arc-shaped, the two ends and two sides are plane-shaped and are four, two poles of each permanent magnet 3 are provided with an inner arc-shaped iron plate 4 and an outer arc-shaped iron plate 5, the inner arc-shaped iron plates 4 and the outer arcs of the soft iron magnetic pole 2 are assembled and fixed, the inner arcs of the soft iron magnetic pole 2 are matched with a rotor 15, a division bar 12 is made into a rectangle by aluminum alloy and is arranged between two, the machine base 6 is made of cast iron and fixed outside two outer arc iron plates 5 at the lower part of the machine shell by a screw, a front end cover 7 and a rear end cover 9 are both made of cast iron into a disk shape, the rotor adopts a common four-pole DC motor rotor, a rotor iron core, a coil 15 and a commutator 16 are installed on a rotor shaft 14, and four electric brush assemblies are installed at the inner side of the rear end cover 8 and matched with the commutator. The front end cover 7 and the rear end cover 8 are installed in the same way as a rotor and a common direct current motor: two direct current electromagnets are arranged at two ends of the inner arc iron plate and the outer arc iron plate of the permanent magnet, and the permanent magnet is installed and disassembled in a mutual attraction mode.