CN212343463U

CN212343463U - Screw-free integral rotor

Info

Publication number: CN212343463U
Application number: CN202021864756.8U
Authority: CN
Inventors: 师理智; 曹保林
Original assignee: Shanxi Weida Transmission Technology Co Ltd
Current assignee: Shanxi Weida Transmission Technology Co Ltd
Priority date: 2020-08-31
Filing date: 2020-08-31
Publication date: 2021-01-12
Anticipated expiration: 2030-08-31

Abstract

The utility model provides a screw-free integral rotor, relating to the technical field of permanent magnet synchronous motors; the problems of unstable structure of the conventional rotor caused by a connecting and fixing structure and poor rotor magnetic leakage due to the magnetic isolation effect of the rotor are solved; the permanent magnet rotor comprises a rotating shaft, a rotor support, magnetic poles and permanent magnets, wherein the rotor support is fixedly arranged on the rotating shaft through keys, a plurality of magnetic poles are arranged in the rotor support to form a rotor core, the magnetic poles and the rotor support are fixedly inserted through positioning rods, one end of each positioning rod positioned outside the rotor support is axially positioned through a check ring, and the other end of each positioning rod is clamped at the rotor support; this structure does not adopt any screw connection structure when fixed to the magnetic pole location, has avoided the unstable phenomenon of rotor structure that the structure becomes flexible etc. caused, compares traditional built-in tangential structure, and this rotor stability is reliable, and the magnetic leakage coefficient is little.

Description

Screw-free integral rotor

Technical Field

The utility model relates to a permanent magnet synchronous motor technical field specifically is an exempt from integral rotor of screw.

Background

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 also adopted to reduce iron loss during the operation of the motor. The main difference is that the rotor magnetic circuit structure is different, and the running performance, the control system, the manufacturing process and the application occasion of the motor are also different. The rotor is used as an important part of the permanent magnet motor and has important significance for the operation of the permanent magnet motor. The traditional rotor structure of the permanent magnet synchronous motor adopts an end plate to compress a punching sheet structure, the structure is complex, a plurality of screws are required to be used for compressing tightly in fastening, the screws are easy to loosen, potential safety hazards exist, and meanwhile, the structure is easy to cause the phenomena of poor magnetic isolation effect and rotor magnetic leakage.

SUMMERY OF THE UTILITY MODEL

The utility model overcomes prior art's is not enough, provides an exempt from integral rotor of screw. The problem of the conventional rotor because connect the rotor that fixed knot structure leads to and separate the magnetic effect difference rotor magnetic leakage to and have the potential safety hazard is solved.

In order to achieve the above purpose, the present invention is achieved by the following technical solutions.

A screw-free integral rotor comprises a rotating shaft, a rotor bracket, rotor punching sheets and permanent magnets, wherein the rotor bracket is fixedly arranged on the rotating shaft through keys, a plurality of rotor punching sheets are arranged in the rotor bracket to be assembled into a rotor core, and the permanent magnets are fixedly arranged in an installation groove between two adjacent rotor punching sheets; the rotor punching sheet is fixedly inserted with the rotor support through the positioning rod, one end of the positioning rod positioned outside the rotor support is axially positioned through the check ring, and the other end of the positioning rod is clamped at the rotor support.

Furthermore, the rotor support is provided with a positioning hole, the rotor punching sheet is provided with a connecting hole, the connecting hole and the positioning hole are coaxially arranged, the diameter of the connecting hole is the same as that of the positioning hole, and the positioning rod is inserted into the connecting hole and the positioning hole and is used for connecting the rotor punching sheet and the rotor support.

Furthermore, the cross sections of the connecting holes, the positioning holes and the positioning rods are non-cylindrical and are used for preventing the magnetic poles from axially rotating in the rotor support.

Still further, the non-cylindrical shape is a polygon.

Furthermore, one end of the positioning rod positioned outside the rotor support is of a cylindrical structure, and the other end of the positioning rod is clamped in the rotor support.

Furthermore, the positioning device also comprises a baffle plate, the baffle plate is provided with a through hole corresponding to the cylindrical end of the positioning rod, the cylindrical end of the positioning rod is provided with a retainer ring groove, and the retainer ring is arranged in the retainer ring groove to axially position the positioning rod. Further, the baffle is made of non-magnetic materials.

Further, the upper end face of the permanent magnet is provided with a permanent magnet baffle.

The utility model discloses produced beneficial effect does for prior art.

The utility model discloses a permanent magnet pressure equipment instrument permanent magnet pressure equipment to the inslot, magnet steel pressure equipment installation back, the retaining ring is fixed on rotor support for the magnet steel baffle, and the locating lever passes the baffle simultaneously, realizes the axial positioning of magnet steel, prevents the magnet steel axial float, and the magnet steel baffle is non-magnetic material, and rotor support separates magnetic material for high strength, reduces the tip magnetic leakage. This structure is when fixed to the magnetic pole location, does not adopt any screw connection structure, has avoided the unstable phenomenon of rotor structure that the structure becomes flexible etc. caused, compares traditional built-in tangential structure, and this rotor structure mechanical strength is high, and stability is reliable, and material cost is lower, has simple structure, simple to operate, and the magnetic leakage coefficient is little, has reduced manufacturing cost.

Drawings

Fig. 1 is a schematic structural view of the integrated rotor of the present invention;

FIG. 2 is a left side view of FIG. 1;

fig. 3 is a schematic structural view of the rotor support of the present invention;

wherein, 1 is a rotating shaft; 2 is a rotor bracket; 3 is a positioning rod; 4 is a magnetic pole; 5 is a permanent magnet baffle; 7 is a bond; 8 is a baffle plate; 9 is a check ring for a shaft; 10 is a permanent magnet; 12 is a first positioning hole, 13 is a second positioning hole, 14 is a baffle mounting hole, and 15 is an ejection hole.

Detailed Description

In order to make the technical problem, technical scheme and beneficial effect that the utility model will solve more clearly understand, combine embodiment and attached drawing, it is right to go on further detailed description the utility model discloses. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. The technical solution of the present invention is described in detail below with reference to the embodiments and the drawings, but the scope of protection is not limited thereto.

As shown in fig. 1 and 2, the novel screw-free integral rotor structure comprises a rotating shaft 1, a rotor support 2, a positioning rod 3, a magnetic pole 4 with a sector structure, a permanent magnet baffle 5, a key 7, a baffle 8, a shaft retainer ring 9 and a permanent magnet 10. The rotor support 2 is fixedly arranged on the rotating shaft 1 through a key 7 to realize circumferential positioning, the rotor support 2 is made of a high-strength magnetism isolating material, a plurality of first positioning holes 12 and ejection holes 15 are uniformly formed in one end face of the rotor support 2, the first positioning holes 12 and the ejection holes 15 are sequentially arranged at intervals, second positioning holes 13 and baffle mounting holes 14 are uniformly formed in the other end face of the rotor support 2, and the second positioning holes 13 and the baffle mounting holes 14 are also sequentially arranged at intervals; the first positioning hole 12 and the second positioning hole 13 are square holes and correspond to each other in position, and are used for mounting the magnetic pole 4 and inserting the positioning rod 3; the baffle mounting hole 14 corresponds to the ejection hole 15 in position and is used for mounting the permanent magnet 10 between the baffle mounting hole and the ejection hole; the baffle mounting hole 14 is used for mounting the permanent magnet baffle 5, and the ejection hole 15 is used for ejecting the permanent magnet 10 when the permanent magnet 10 is dismounted; . The magnetic pole 4 is embedded between two end faces of the rotor bracket 2 and is provided with a connecting hole, the connecting hole is coaxial with the first positioning hole 12 and the second positioning hole 13, and the cross section of the connecting hole is square. One end of the positioning rod 3 is cylindrical, the main body is square, the end part of the other end is a raised clamping block structure, the cylindrical end of the positioning rod 3 is sequentially inserted into the first positioning hole 12 and the connecting hole and penetrates out of the second positioning hole 13, and the clamping block structure of the positioning rod 3 is clamped into the second positioning hole 13 to connect and fix the magnetic pole 4 and the rotor bracket 2, and the clamping block structure acts on positioning and torque transmission. This particular configuration of the positioning rod 3 prevents relative rotation between the magnetic pole 4 and the positioning rod 3 and the rotor holder 2. The square end of the positioning rod 3 is embedded into the rotor bracket 2 and is positioned through a clamping block structure. The positioning rod 3 is provided with a cylindrical end face with one end extending out of the rotor support 2, a baffle plate 8 made of a magnetism isolating material is arranged on the end face, a through hole corresponding to the cylindrical end of the positioning rod 3 is formed in the baffle plate 8, a retainer ring groove is formed in the cylindrical end of the positioning rod 3, and a retainer ring 9 for a shaft is arranged in the retainer ring groove to axially position the positioning rod 3.

N locating levers 3 are connected with N magnetic poles 4, fix magnetic poles 4 in the terminal surface location of the rotor support 2 one by one, assemble into the complete rotor core. The magnetic pole 4 is formed by laminating a plurality of rotor punching sheets with certain height and is fixedly penetrated by the positioning rod 3. The magnetic poles 4 are assembled integrally and then installed in the grooves of the rotor support 2. A groove shape is reserved on the left position and the right position of each magnetic pole 4, a permanent magnet fixing groove is formed between two adjacent magnetic poles 4, a notch is formed in the upper portion of the permanent magnet fixing groove, the width of the notch is larger than that of an air gap, and the effect of limiting leakage magnetic flux is achieved. The permanent magnets 10 are pressed into the slots by a special permanent magnet pressing tool, and the permanent magnets 10 are alternately embedded into the permanent magnet slots according to N, S poles to form the whole rotor structure. After the magnetic steel is installed in a press-fitting mode, the baffle 8 is fixed on the rotor support 2 through the shaft retainer ring 9, meanwhile, the positioning rod 3 penetrates through the baffle 8, the axial positioning of the magnetic steel is achieved, the axial movement of the magnetic steel is prevented, and the permanent magnet baffle 5 is made of a non-magnetic conductive material, so that the magnetic flux leakage at the end portion is reduced. The permanent magnet 10 is pressed by the permanent magnet baffle 5, the baffle 8 and the axial retainer ring 9 to prevent axial movement. The axial retainer ring 9 plays a role in axial fixation, avoids screw compression and avoids using screw looseness.

Compared with a traditional built-in tangential structure, the structure has the advantages of high mechanical strength, reliable stability, lower material cost, simple structure, convenience in installation, small magnetic leakage coefficient and reduction in manufacturing cost.

The above description is for further details of the present invention with reference to specific preferred embodiments, and it should not be understood that the embodiments of the present invention are limited thereto, and it will be apparent to those skilled in the art that the present invention can be implemented in a plurality of simple deductions or substitutions without departing from the scope of the present invention, and all such alterations and substitutions should be considered as belonging to the present invention, which is defined by the appended claims.

Claims

1. A screw-free integral rotor comprises a rotating shaft (1), a rotor support (2), magnetic poles (4) and permanent magnets (10), wherein the rotor support (2) is fixedly installed on the rotating shaft (1) through keys (7), a plurality of magnetic poles (4) are arranged in the rotor support (2) to form a rotor core, and the permanent magnets (10) are fixedly arranged in installation grooves between two adjacent magnetic poles (4); the magnetic pole rotor is characterized in that the magnetic pole (4) and the rotor support (2) are fixedly connected through the positioning rod (3) in an inserting mode, one end of the positioning rod (3) located outside the rotor support (2) is axially positioned through the check ring, the other end of the positioning rod (3) is clamped at the position of the rotor support (2), and the rotor support (2_ is made of a high-strength magnetic isolation material.

2. The screw-free integrated rotor according to claim 1, wherein the rotor support (2) is provided with a positioning hole, the magnetic pole (4) is provided with a connecting hole, the connecting hole and the positioning hole are coaxially arranged, and the positioning rod (3) is inserted into the connecting hole and the positioning hole for connecting the magnetic pole (4) and the rotor support (2).

3. A screw-free integrated rotor according to claim 2, wherein the cross-section of the connecting holes, locating holes and locating rods (3) is non-cylindrical for preventing the magnetic poles (4) from rotating axially in the rotor support (2).

4. The screw-free integrated rotor according to claim 3, wherein the non-cylindrical shape is a square or polygon.

5. The screw-free integrated rotor as claimed in claim 3, wherein one end of the positioning rod (3) located outside the rotor support (2) is of a cylindrical structure, the rest is of a non-cylindrical structure, and the end of the positioning rod (3) with the non-cylindrical structure is clamped in the rotor support (2).

6. The screw-free integral rotor according to claim 5, further comprising a baffle (8), wherein the baffle (8) is provided with a through hole corresponding to the cylindrical end of the positioning rod (3), the cylindrical end of the positioning rod (3) is provided with a retainer groove, and a retainer ring is arranged in the retainer groove and used for axially positioning the positioning rod (3).

7. A screw-free integrated rotor according to claim 6, wherein the baffle (8) is of a non-magnetic material.

8. A screw-free integrated rotor according to claim 1, wherein the permanent magnet (10) is provided with a permanent magnet baffle (5) at its upper end face.