CN112366910B

CN112366910B - Rare earth permanent magnet motor capable of mechanically regulating speed

Info

Publication number: CN112366910B
Application number: CN202011296824.XA
Authority: CN
Inventors: 邹联石
Original assignee: Jiangxi Lima Electromechanical Technology Co ltd
Current assignee: Jiangxi Zhuifeng Compressor Co ltd
Priority date: 2020-11-18
Filing date: 2020-11-18
Publication date: 2021-11-09
Anticipated expiration: 2040-11-18
Also published as: CN112366910A

Abstract

The invention relates to the field of rare earth permanent magnet motors, and provides a rare earth permanent magnet motor capable of mechanically regulating speed. Including motor casing and pivot, the pivot is connected with the inner rotor iron core, the outer rotor iron core that rotates of inner rotor iron core, inner rotor iron core and outer rotor iron core all are equipped with logical groove, logical inslot has placed the magnetic cylinder, the one end and the rotating base contact of magnetic cylinder, the magnetic cylinder internal fixation has the permanent magnet, the other end that leads to the groove is equipped with the capping, capping upper end on the inner rotor iron core is fixed with flabellum I, the upper end of flabellum I is fixed in the support through the connecting rod, outer rotor iron core screwed connection has the screw rod, the support is equipped with sleeve and screw rod screwed connection, telescopic top is supported there is the backplate, the angle such as backplate bottom is equipped with multiunit flabellum II, the end cover is equipped with multiunit instrument hole, be equipped with the arc hole of two centrosymmetries in the middle of the end cover. The rotor core is internally provided with the rotor core and the outer rotor core, and the positions of the permanent magnets can be changed by rotating the inner rotor core and the outer rotor core through a mechanical means, so that the rotating speed of the rotor is adjusted.

Description

Rare earth permanent magnet motor capable of mechanically regulating speed

Technical Field

The invention relates to the field of rare earth permanent magnet motors, in particular to a rare earth permanent magnet motor capable of mechanically regulating speed.

Background

The motor is an electromagnetic device for realizing electric energy conversion or transmission according to the electromagnetic induction law. The main function of the motor is to generate a driving torque as a power source. The speed regulating motor changes the rotation speed of the motor by changing the number of stages, voltage, current, frequency and other methods of the motor, so that the motor achieves higher use performance. The existing speed regulating motor mainly uses an electronic device to realize speed regulation, and the electronic device is easily influenced by the environment and breaks down after being used for a long time.

The advantage of using electronic devices to regulate the speed of the motor is also obvious, namely the electric control is convenient, and the motor can be regulated without stopping. However, the speed change of the motor is not all hard to require the motor to be stopped for adjustment, and a plurality of application scenes can be used for stopping the motor for speed adjustment. However, the existing speed regulating motor is lack of a speed regulating motor using mechanical speed regulation.

Disclosure of Invention

The invention aims to provide a rare earth permanent magnet motor capable of mechanically regulating speed, which is mainly used for solving the problem that the permanent magnet motor lacks a mechanical speed regulation means.

The technical problem of the invention is mainly solved by the following technical scheme: the fan comprises a motor shell, stator teeth are uniformly arranged on the inner wall of the motor shell at equal angles, coils are wound on the stator teeth, a rotating shaft is rotatably connected in the middle of the motor shell and is connected with an inner rotor iron core, an outer rotor iron core is rotatably connected outside the inner rotor iron core, the inner rotor iron core and the outer rotor iron core are respectively provided with a through groove, one end of each through groove is spirally and fixedly connected with a rotating base, a magnetic cylinder is placed in each through groove, one end of each magnetic cylinder is in contact with the rotating base, a permanent magnet is fixed in each magnetic cylinder, the other end of each through groove is spirally fixed with a groove cover, each magnetic cylinder is fixed in each through groove cover, a fan blade I is fixed at the upper end of each groove cover on the inner rotor iron core, the upper end of each fan blade I is fixed on a support through a connecting rod, and a plurality of groups of threaded holes are formed in one side, provided with the groove covers, of the outer rotor iron core, equal screwed connection has the screw rod in the screwed hole, the upper end of screw rod all passes the support, just the support be equipped with the sleeve with screw rod screwed connection, telescopic top is supported there is the backplate, the equal angle in backplate bottom is equipped with multiunit flabellum II, rotate in the middle of the backplate connect in the pivot, the top of connecting rod is fixed in through lock nut the backplate, motor casing is in backplate one side is equipped with the end cover, the end cover is equipped with multiunit instrument hole, the instrument hole with the sleeve position corresponds, be equipped with the arc hole of two centrosymmetries in the middle of the end cover, the arc hole with the pivot is concentric, the connecting rod is located under the arc hole.

Preferably, the arc of the arc-shaped hole is 90 degrees.

Preferably, a rotating cap is arranged at the top of the connecting rod, and the connecting rod is rotated through the rotating cap.

Preferably, the slot cover on the outer rotor core is screwed and fixed at the top of the through slot, and the slot cover on the inner rotor core is screwed and fixed at the top end of the magnetic cylinder. Therefore, the magnetic cylinder on the inner rotor iron core can be ensured to be rotated by the connecting rod connected with the slot cover to change the position.

The invention has the beneficial effects that: the rotor core is internally provided with the rotor core and the outer rotor core, and the positions of the permanent magnets can be changed by rotating the inner rotor core and the outer rotor core through a mechanical means, so that the magnetic field distribution of the permanent magnets on the rotor core can be adjusted, and the rotating speed of the rotor can be adjusted.

Drawings

FIG. 1 is a schematic cross-sectional view of the present invention;

FIG. 2 is a schematic cross-sectional view II of the present invention;

FIG. 3 is a schematic structural view of a component rotor of the present invention;

FIG. 4 is a top view of the present invention;

FIG. 5 is a schematic view of the rotor core of the present invention after the magnetic circuit is adjusted;

description of reference numerals:

1. the novel fan comprises a rotating shaft, an inner rotor iron core 2, an outer rotor iron core 3, a through groove 4, a magnetic cylinder 5, a permanent magnet 6, a threaded hole 7, a groove cover 8, a screw rod 9, fan blades I and I10, a bracket 11, a sleeve 12, a connecting rod 13, a rotating cap 1301, a locking nut 14, a motor shell 15, a stator tooth 16, a coil 17, an end cover 18, a tool hole 19, an arc hole 20, a rotating base 21, a fan blade II and a back plate 23.

Detailed Description

The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings 1-5.

Example 1

The rare earth permanent magnet motor capable of mechanically regulating the speed comprises a motor shell 15, stator teeth 16 are uniformly arranged on the inner wall of the motor shell 15 at equal angles, coils 17 are wound on the stator teeth 16, a rotating shaft 1 is rotatably connected in the middle of the motor shell 15, the rotating shaft 1 is connected with an inner rotor iron core 2, an outer rotor iron core 3 is rotatably connected outside the inner rotor iron core 2, through grooves 4 are formed in the inner rotor iron core 2 and the outer rotor iron core 3, a rotating base 21 is fixedly connected to one end of each through groove 4 in a spiral mode, a magnetic cylinder 5 is placed in each through groove 4, one end of each magnetic cylinder 5 is in contact with the rotating base 21, a permanent magnet 6 is fixed in each magnetic cylinder 5, a groove cover 8 is fixedly arranged at the other end of each through groove 4 in a spiral mode, each magnetic cylinder 5 is fixed in each through groove cover 8, a fan blade I10 is fixed to the upper end of each inner rotor 8 on the iron core 2, the upper end of each fan blade I10 is fixed to a support 11 through a connecting rod 13, a plurality of groups of screw holes 7 are formed in one side, of the outer rotor iron core 3, where the groove covers 8 are arranged at equal angles, equal screwed connection has screw rod 9 in screw hole 7, support 11 is all passed to the upper end of screw rod 9, and support 11 is equipped with sleeve 12 and screw rod 9 screwed connection, sleeve 12's top is supported there is backplate 23, backplate 23 bottom equidistance is equipped with multiunit flabellum II 22, rotate in the middle of the backplate 23 and connect in pivot 1, the top of connecting rod 13 is fixed in backplate 23 through lock nut 14, motor casing 15 is equipped with end cover 18 on backplate 23 one side, end cover 18 is equipped with multiunit instrument hole 19, instrument hole 19 corresponds with sleeve 12 position, be equipped with the arc hole 20 of two centrosymmetries in the middle of the

end cover

18, 20 radians in arc hole are 90, arc hole 20 is concentric with pivot 1, connecting rod 13 is located arc hole 20 under.

Wherein, the top of the connecting rod 13 is provided with a rotating cap 1301, and the connecting rod 13 is rotated through the rotating cap 1301.

Wherein, the slot cover 8 on the outer rotor iron core 3 is fixed on the top of the through slot 4 in a spiral way, and the slot cover 8 on the inner rotor iron core 2 is fixed on the top end of the magnetic cylinder 5 in a spiral way. Thus, the magnetic cylinder 5 on the inner rotor iron core can be ensured to be rotated by the connecting rod connected with the slot cover 8 to change the position.

The specific speed regulation method comprises the following steps: the screw 9 is rotated to the position of the tool hole 19, and then the screw 9 is separated from the outer rotor core 3 by inserting a wrench into the tool hole 19. Then the rotating shaft 1 is rotated to enable the outer rotor iron core 3 and the inner rotor iron core 2 to rotate mutually, and the relative position of the outer rotor iron core 3 and the inner rotor iron core 2 is changed. Thereby changing the position distribution of the permanent magnets 6 on the outer rotor core 3 and the inner rotor core 2, as shown in fig. 4 and 5. Meanwhile, a wrench can be used for rotating the rotating cap 1301 at the top of the connecting rod 13, and the connecting rod 13 is used for rotating the magnetic cylinder 5 on the inner rotor, so that the magnetic path direction of the permanent magnet 6 on the iron core 2 of the inner rotor is changed. The two mechanical adjusting methods are combined to enable the rotor core to provide magnetic fields with different strengths and different magnetic circuits, and different driving forces can be provided on the whole motor in response.

While the foregoing embodiments are illustrative of the present invention, various modifications and changes may be readily made by those skilled in the art based upon the teachings and principles of this invention, which are intended to be limited not to the details of construction and methods herein shown, but rather to the preferred embodiments described, and therefore all equivalent modifications and changes in light of the above teachings are intended to be included within the scope of the present invention as defined in the appended claims.

Claims

1. A rare earth permanent magnet motor capable of mechanically regulating speed comprises a motor shell (15), wherein stator teeth (16) are uniformly arranged on the inner wall of the motor shell (15) at equal angles, coils (17) are wound on the stator teeth (16), a rotating shaft (1) is rotatably connected in the middle of the motor shell (15), the rare earth permanent magnet motor is characterized in that the rotating shaft (1) is connected with an inner rotor iron core (2), an outer rotor iron core (3) is rotatably connected outside the inner rotor iron core (2), through grooves (4) are formed in the inner rotor iron core (2) and the outer rotor iron core (3), a rotating base (21) is fixedly connected to one end of each through groove (4) in a spiral mode, a magnetic cylinder (5) is placed in each through groove (4), one end of each magnetic cylinder (5) is in contact with the corresponding rotating base (21), a permanent magnet (6) is fixed in each magnetic cylinder (5), and a groove cover (8) is arranged at the other end of each through groove (4), the magnetic cylinder (5) is fixed in the through groove (4) by the groove cover (8), fan blades I (10) are fixed at the upper end of the groove cover (8) on the inner rotor iron core (2), the upper ends of the fan blades I (10) are fixed on the support (11) through the connecting rod (13), a plurality of groups of threaded holes (7) are arranged on one side of the inner rotor iron core (3) with the groove cover (8) at equal angles, screw rods (9) are spirally connected in the threaded holes (7), the upper ends of the screw rods (9) penetrate through the support (11), the support (11) is provided with a sleeve (12) which is spirally connected with the screw rods (9), a back plate (23) is supported at the top end of the sleeve (12), a plurality of groups of fan blades II (22) are arranged at equal angles at the bottom of the back plate (23), the middle of the back plate (23) is rotatably connected to the rotating shaft (1), and the top end of the connecting rod (13) is fixed on the back plate (23) through a locking nut (14), the motor shell (15) is arranged on one side of the back plate (23) and is provided with an end cover (18), the end cover (18) is provided with a plurality of groups of tool holes (19), the tool holes (19) correspond to the sleeve (12) in position, two arc-shaped holes (20) which are centrosymmetric are arranged in the middle of the end cover (18), the arc-shaped holes (20) are concentric with the rotating shaft (1), and the connecting rod (13) is located under the arc-shaped holes (20).

2. A mechanically adjustable speed rare earth permanent magnet machine according to claim 1, wherein the arc of the arc-shaped hole (20) is 90 °.

3. A mechanically adjustable speed rare earth permanent magnet machine according to claim 1, wherein a rotating cap (1301) is arranged on top of the connecting rod (13), and the connecting rod (13) is rotated by the rotating cap (1301).

4. A mechanically speed-adjustable rare-earth permanent magnet motor according to claim 1, wherein the slot cover (8) on the outer rotor core (3) is screwed on the top of the through slot (4), and the slot cover (8) on the inner rotor core (2) is screwed on the top of the magnetic cylinder (5).