CN213305082U

CN213305082U - Permanent magnet sealing device of inner rotor permanent magnet motor

Info

Publication number: CN213305082U
Application number: CN202022367140.6U
Authority: CN
Inventors: 王长强; 蔡琦琳
Original assignee: Suzhou Suli Energy Technology Co ltd
Current assignee: Suzhou Suli Energy Technology Co ltd
Priority date: 2020-10-22
Filing date: 2020-10-22
Publication date: 2021-05-28
Anticipated expiration: 2030-10-22

Abstract

The utility model discloses an inner rotor permanent magnet motor permanent magnet sealing device, including the inner rotor, inner rotor terminal surface middle part position runs through fixedly connected with main shaft, inner rotor outer wall fixedly connected with rotor block, a plurality of evenly distributed's fixed slide opening is seted up to rotor block terminal surface both sides middle part position, the rotor block both ends are located fixed slide opening and keep away from main shaft one side and set up the spacing fixed slot that the annular set up, the rotor block both ends are located fixed slide opening and are close to main shaft one side and set up a plurality of evenly distributed's first fixed threaded hole, and are a plurality of first fixed threaded hole is that the annular set up, rotor block both ends position is provided with the fixed end cover that two symmetri. The utility model discloses make permanent-magnet machine's inner rotor permanent magnet sealed up for deposit fixedly, and sealed up for deposit fixedly abundant, not receive temperature and centrifugal force's influence, greatly increased permanent-magnet machine's life.

Description

Permanent magnet sealing device of inner rotor permanent magnet motor

Technical Field

The utility model relates to the technical field of electric machines, especially, relate to an inner rotor permanent-magnet machine permanent magnet sealing device.

Background

The permanent magnet synchronous motor provides excitation by the permanent magnet, so that the structure of the motor is simpler, the processing and assembling cost is reduced, a collecting ring and an electric brush which are easy to cause problems are omitted, and the running reliability of the motor is improved; and because excitation current is not needed, excitation loss is avoided, and the efficiency and the power density of the motor are improved. The permanent magnet synchronous motor is composed of a stator, a rotor, an end cover and the like. The stator is basically the same as a common induction motor, and a lamination structure is adopted to reduce iron loss during the operation of the motor. The rotor can be made into solid or laminated by lamination. The armature winding can adopt a concentrated whole-pitch winding, and can also adopt a distributed short-pitch winding and an unconventional winding.

The connection relation of the inner rotor and the permanent magnet of the permanent magnet motor in the prior art is that a plurality of through holes are formed in the end face of the inner rotor, the permanent magnet is inserted into the through holes, and then resin is injected for fixing, so that heat is generated when the inner rotor rotates for a long time, the permanent magnet is easy to fall off under the action of the heat and centrifugal force, and the motor is damaged.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing an inner rotor permanent magnet motor permanent magnet sealing device.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides an inner rotor permanent-magnet machine permanent magnet sealing device, includes the inner rotor, inner rotor terminal surface middle part position runs through fixedly connected with main shaft, inner rotor outer wall fixedly connected with rotor block, rotor block terminal surface both sides middle part position sets up a plurality of evenly distributed's fixed slide opening, the rotor block both ends are located fixed slide opening and keep away from main shaft one side and set up the spacing fixed slot that the annular set up, the rotor block both ends are located fixed slide opening and are close to main shaft one side and set up a plurality of evenly distributed's first fixed threaded hole, and are a plurality of first fixed threaded hole is the annular setting, rotor block both ends position is provided with the fixed end cover that two.

As a further description of the above technical solution:

two symmetry settings the fixed end cover is close to rotor body one side and is provided with a plurality of evenly distributed's second fixed screw hole near first fixed screw hole position, threaded connection has fixing bolt between first fixed screw hole and the second fixed screw hole between rotor body and the fixed end cover.

As a further description of the above technical solution:

two symmetries set up the fixed end cover is close to rotor block one side and is located the spacing fixed block that spacing fixed slot position fixedly connected with annular set up, the shape size of spacing fixed block and spacing fixed slot is unanimous, spacing fixed block outer wall and spacing fixed slot inner wall sliding connection.

As a further description of the above technical solution:

two symmetries set up fixed end cover is close to rotor block one side and is located fixed slide opening position and is provided with a plurality of evenly distributed's the slide opening that blocks, and is a plurality of permanent magnet both ends position blocks slide opening sliding connection with corresponding position, and is a plurality of block the slide opening and all be "protruding" shape setting.

As a further description of the above technical solution:

through holes are formed in the middle of the end faces of the two fixed end covers, and the diameters of the through holes are consistent with the diameter of the end face of the inner rotor.

The utility model discloses following beneficial effect has:

the utility model discloses a set up the fixed end cover that two symmetries set up, through in sliding into fixed sliding hole with the permanent magnet, set up fixed end cover lid in rotor block both sides position with two symmetries again, align first fixed screw hole with second fixed screw hole, slide into spacing fixed slot fast with spacing fixed again, make to support tightly permanent magnet both ends and the gliding hole that blocks of fixed end cover, rethread fixing bolt is fixed end cover and rotor block, make the permanent magnet fixed, and make the permanent magnet need not pass through resin seal fixed, do not receive high temperature and centrifugal force's influence, the effectual permanent magnet of having avoided drops and causes permanent magnet motor to damage, great increase permanent magnet motor's life.

Drawings

Fig. 1 is a top view of a permanent magnet sealing device of an inner rotor permanent magnet motor according to the present invention;

fig. 2 is a side sectional view of the permanent magnet sealing device of the inner rotor permanent magnet motor provided by the present invention;

fig. 3 is the utility model provides an inner rotor permanent-magnet machine permanent magnet sealing device's fixed end cover side cut-away view.

Illustration of the drawings:

1. a main shaft; 2. fixing an end cover; 3. a permanent magnet; 4. an inner rotor; 5. fixing the bolt; 6. a fixed slide hole; 7. a first fixing threaded hole; 8. a rotor body; 9. blocking the sliding hole; 10. a second fixing threaded hole; 11. a limit fixing block; 12. and a limiting fixing groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-3, the present invention provides an embodiment: the utility model provides an inner rotor permanent magnet motor permanent magnet sealing device, including

inner rotor

4, 4 terminal surface middle part positions of inner rotor run through fixedly connected with

main shaft

1, 4 outer wall fixedly connected with rotor block 8 of inner rotor, rotor block 8 terminal surface both sides middle part position sets up a plurality of evenly distributed's fixed slide opening 6, rotor block 8 both ends are located fixed slide opening 6 and keep away from main shaft 1 one side and set up the spacing fixed slot 12 that the annular set up, rotor block 8 both ends are located fixed slide opening 6 and are close to main shaft 1 one side and set up a plurality of evenly distributed's first fixed screw hole 7, a plurality of first fixed screw hole 7 are the annular and set up, rotor block 8 both ends position is provided with the fixed end cover 2 that two symmetries set up, can be fixed with 3 both ends of permanent magnet through two fixed end cover 2, make permanent magnet 3.

The fixed end cover 2 that two symmetries set up is close to rotor block 8 one side and is close to first fixed screw hole 7 position and be provided with a plurality of evenly distributed's second fixed screw hole 10, threaded connection has fixing bolt 5 between first fixed screw hole 7 between rotor block 8 and the fixed end cover 2 and the second fixed screw hole 10, it is fixed with fixed end cover 2 and rotor block 8 through fixing bolt 5, make 3 fixed permanent magnets, seal up 3 permanent magnets and keep in rotor block 8, and fix through fixed end cover 2, the effectual permanent magnet 3 that has avoided drops, permanent magnet motor's life has been increased. The fixed end cover 2 that two symmetries set up is close to rotor block 8 one side and is located the spacing fixed block 11 that 12 position fixedly connected with rings of spacing fixed slot set up, and spacing fixed block 11 is unanimous with the shape size of spacing

fixed slot

12, and 11 outer walls of spacing fixed block and 12 inner wall sliding connection of spacing fixed slot carry on spacingly to fixed end cover 2 through spacing fixed slot 12 and spacing fixed block 11.

Two fixed end covers 2 that the symmetry set up are close to rotor block 8 one side and are located 6 positions of fixed slide opening and are provided with the slide opening 9 that blocks of a plurality of evenly distributed, and 3 both ends positions of a plurality of permanent magnets block slide opening 9 sliding connection with corresponding position, and a plurality of slide openings 9 that block all are "protruding" font setting, and slide opening 9 that blocks through "protruding" font setting can be so that permanent magnet 3 is fixed. Through holes are formed in the middle of the end faces of the two fixed end covers 2, and the diameters of the through holes are consistent with the diameter of the end face of the inner rotor 4.

The working principle is as follows: through sliding permanent magnet 3 into fixed slide opening 6, set up two symmetries again and fix end cover 2 lid in rotor block 8 both sides position, align first fixed screw hole 7 with second fixed screw hole 10, slide spacing fixed block 11 again into spacing fixed slot 12 for support tightly permanent magnet 3 both ends and fixed end cover 2 block slide opening 9, rethread fixing bolt 5 is fixed end cover 2 and rotor block 8, makes permanent magnet 3 fixed.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides an inner rotor permanent-magnet machine permanent magnet sealing device, includes inner rotor (4), its characterized in that: inner rotor (4) terminal surface middle part position runs through fixedly connected with main shaft (1), inner rotor (4) outer wall fixedly connected with rotor block (8), rotor block (8) terminal surface both sides middle part position sets up a plurality of evenly distributed's fixed slide opening (6), rotor block (8) both ends are located fixed slide opening (6) and keep away from main shaft (1) one side and set up spacing fixed slot (12) that the annular set up, rotor block (8) both ends are located fixed slide opening (6) and are close to main shaft (1) one side and set up a plurality of evenly distributed's first fixed screw hole (7), and are a plurality of first fixed screw hole (7) are that the annular set up, rotor block (8) both ends position is provided with fixed end cover (2) that two symmetries set up.

2. The inner rotor permanent magnet motor permanent magnet sealing device of claim 1, wherein: two symmetry sets up fixed end cover (2) are close to rotor body (8) one side and are close to first fixed screw hole (7) position and are provided with a plurality of evenly distributed's second fixed screw hole (10), threaded connection has fixing bolt (5) between first fixed screw hole (7) and second fixed screw hole (10) between rotor body (8) and fixed end cover (2).

3. The inner rotor permanent magnet motor permanent magnet sealing device of claim 1, wherein: two symmetries set up fixed end cover (2) are close to rotor body (8) one side and are located spacing fixed block (11) that spacing fixed slot (12) position fixedly connected with annular set up, spacing fixed block (11) are unanimous with the shape size of spacing fixed slot (12), spacing fixed block (11) outer wall and spacing fixed slot (12) inner wall sliding connection.

4. The inner rotor permanent magnet motor permanent magnet sealing device of claim 1, wherein: two symmetries set up fixed end cover (2) are close to rotor block (8) one side and are located fixed slide opening (6) position and are provided with a plurality of evenly distributed block slide opening (9), and are a plurality of permanent magnet (3) both ends position blocks slide opening (9) sliding connection with corresponding position, and is a plurality of block slide opening (9) and all be "protruding" shape setting.

5. The inner rotor permanent magnet motor permanent magnet sealing device of claim 1, wherein: through holes are formed in the middle of the end faces of the two fixed end covers (2), and the diameters of the through holes are consistent with the diameter of the end face of the inner rotor (4).