Rotor mounting structure of synchronous reluctance motor

Abstract

The utility model belongs to the technical field of synchronous reluctance motors, and particularly relates to a synchronous reluctance motor rotor mounting structure which comprises a main shaft, two symmetrically arranged limiting clamping blocks are arranged on the peripheral wall of the cylindrical surface of the main shaft, a bottom plate is fixedly sleeved on the main shaft, the front end of the bottom plate is fixedly connected with four threaded columns, and the threaded columns are fixedly connected with two ends of the main shaft. The main shaft is slidably sleeved with a pressing plate, the pressing plate is located in front of the bottom plate, the four threaded columns penetrate through the pressing plate and are slidably connected with the pressing plate, the four threaded columns are sleeved with first nuts, the four first nuts are located at the front end of the pressing plate and attached to the pressing plate, and a plurality of rotor laminations are arranged between the pressing plate and the bottom plate. According to the utility model, the rotor laminations can be tightly attached through the pressing plate 5 and the bottom plate 3, the rotor iron core can better drive the main shaft 1 to rotate during rotation through the limiting of the four threaded columns 4 and the two limiting clamping blocks 2, and the modularized detachable design of the bearing 15 is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of synchronous reluctance motors, in particular to a rotor installation structure of a synchronous reluctance motor. Background Technique

[0002] A synchronous reluctance motor is a kind of electric motor, whose working principle is different from that of traditional asynchronous motors. It uses the relative change of magnetic reluctance of the magnetic field to achieve rotation. The key to the rotor design of a synchronous reluctance motor lies in its simple and effective magnetic reluctance characteristics. The rotor is usually designed to have multiple grooves, called air magnetic barriers, which can increase the variation range of the rotor magnetic reluctance, thereby improving the performance and torque density of the motor.

[0003] In the existing synchronous reluctance motor rotor, the rotor laminations are formed into a rotor core through sealant. This method requires prior sealant processing of the rotor laminations during installation, which not only has cumbersome processes but also has too high installation and processing costs.

[0004] Therefore, we propose a rotor installation structure of a synchronous reluctance motor to solve the above problems. Content of the Utility Model

[0005] The purpose of the utility model is to solve the deficiencies existing in the prior art, and to propose a rotor installation structure of a synchronous reluctance motor.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A rotor installation structure of a synchronous reluctance motor includes a main shaft. On the outer peripheral wall of the cylindrical surface of the main shaft, there are two symmetrically arranged limiting blocks. A bottom plate is fixedly sleeved on the main shaft. Four threaded columns are fixedly connected to the front end of the bottom plate. A pressing plate is slidably sleeved on the main shaft. The pressing plate is located in front of the bottom plate. The four threaded columns all penetrate through the pressing plate and are slidably connected thereto. Four first nuts are sleeved on the four threaded columns. The four first nuts are all located at the front end of the pressing plate and are in contact with it. Several rotor laminations are arranged between the pressing plate and the bottom plate.

[0008] Preferably, several first limiting holes are opened on the several rotor laminations. The shape of the first limiting holes corresponds to the shapes of the main shaft and the two limiting blocks. The main shaft and the two limiting blocks penetrate through the first limiting holes. Four second limiting holes are opened on the several rotor laminations. The four threaded columns respectively penetrate through the four second limiting holes on each rotor lamination.

[0009] Preferably, several air magnetic barriers are opened on each rotor lamination. Several magnetic steel grooves are opened on each rotor lamination. Magnets are installed in each magnetic steel groove.

[0010] Preferably, limiting bars are fixedly connected to the four side walls, namely the upper, lower, left and right sides, of the bottom plate and the pressing plate.

[0011] Preferably, bearing columns are provided at both the front and rear ends of the main shaft. At one end of each of the two bearing columns close to the main shaft, a mounting block is fixedly connected, and bearings are mounted on both of the two bearing columns.

[0012] Preferably, mounting holes are formed in both of the two mounting blocks, mounting grooves are formed at both the front and rear ends of the main shaft, two bolts are provided on the main shaft, the two bolts respectively penetrate through the two mounting grooves, both of the two bolts penetrate through the main shaft, and second nuts are threadedly sleeved on both of the two bolts.

[0013] Compared with the existing technology, the advantages of this device are as follows:

[0014] 1. The rotor laminations 7 are squeezed tightly by the pressing plate 5 and the bottom plate 3 to form a rotor core. Through the limitation of the four threaded columns 4 and the two limiting blocks 2 on the first limiting hole 8 and the second limiting hole 9, when the rotor core rotates, it drives the main shaft 1 to rotate. At the same time, each limiting bar 13 respectively blocks the corresponding magnet slot 11, preventing the magnets 12 in the magnet slots 11 from falling off accidentally, thus affecting the normal operation of the rotor.

[0015] 2. The modular detachable design of the bearing 15 is realized. When one of the bearings 15 is damaged and needs to be replaced, only the corresponding bearing column 14 needs to be disassembled and replaced.

[0016] In summary, the utility model can realize the close fitting of each rotor lamination through the pressing plate 5 and the bottom plate 3. The limitation of the four threaded columns 4 and the two limiting blocks 2 enables the rotor core to better drive the main shaft 1 to rotate when rotating, and the modular detachable design of the bearing 15 is realized. Description of the Drawings

[0017] Figure 1 is a perspective view of a rotor mounting structure of a synchronous reluctance motor proposed by the utility model;

[0018] Figure 2 is an exploded view of a rotor mounting structure of a synchronous reluctance motor proposed by the utility model;

[0019] Figure 3 is a disassembled perspective view of the bearing column and the main shaft in a rotor mounting structure of a synchronous reluctance motor proposed by the utility model.

[0020] In the figure: 1 main shaft, 2 limit clamping block, 3 bottom plate, 4 threaded post, 5 pressing plate, 6 first nut, 7 rotor laminations, 8 first limit hole, 9 second limit hole, 10 air magnetic barrier, 11 magnet slot, 12 magnet, 13 limit strip, 14 bearing post, 15 bearing, 16 mounting block, 17 mounting groove, 18 bolt, 19 second nut, 20 mounting hole. Specific implementation manner

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0022] Refer to Figures 1-3 , a synchronous reluctance motor rotor mounting structure, including a main shaft 1. Two symmetrically arranged limit clamping blocks 2 are provided on the outer peripheral wall of the cylindrical surface of the main shaft 1. A bottom plate 3 is fixedly sleeved on the main shaft 1. Four threaded posts 4 are fixedly connected to the front end of the bottom plate 3. A pressing plate 5 is slidably sleeved on the main shaft 1. The pressing plate 5 is located in front of the bottom plate 3. All four threaded posts 4 penetrate through the pressing plate 5 and are slidably connected thereto. Four first nuts 6 are sleeved on all four threaded posts 4. All four first nuts 6 are located at the front end of the pressing plate 5 and are in contact with it. A plurality of rotor laminations 7 are provided between the pressing plate 5 and the bottom plate 3. A plurality of first limit holes 8 are opened on all the rotor laminations 7. The shape of the first limit hole 8 corresponds to the shapes of the main shaft 1 and the two limit clamping blocks 2. The main shaft 1 and the two limit clamping blocks 2 penetrate through the first limit hole 8. Four second limit holes 9 are opened on all the rotor laminations 7. The four threaded posts 4 respectively penetrate through the four second limit holes 9 on each rotor lamination 7. A plurality of rotor laminations 7 are sleeved on the main shaft 1 through the first limit holes 8. At the same time, the four threaded posts 4 respectively pass through the four second limit holes 9 on each rotor lamination 7 to limit it. Each rotor lamination 7 abuts against the bottom plate 3. By tightening each first nut 6, the pressing plate 5 is pressed towards the bottom plate 3 until each rotor lamination 7 is squeezed tightly by the pressing plate 5 and the bottom plate 3 to form a rotor core. Through the limitation of the first limit hole 8 and the second limit hole 9 by the four threaded posts 4 and the two limit clamping blocks 2, when the rotor core rotates, it drives the main shaft 1 to rotate.

[0023] A plurality of air magnetic barriers 10 are opened on each rotor lamination 7. A plurality of magnet slots 11 are opened on each rotor lamination 7. A magnet 12 is installed in each magnet slot 11. Limit strips 13 are fixedly connected to the upper, lower, left, and right four side walls of the bottom plate 3 and the pressing plate 5. Through each limit strip 13, not only can each rotor lamination 7 be better pressed, but also each limit strip 13 respectively blocks the corresponding magnet slot 11 to prevent the magnet 12 in the magnet slot 11 from accidentally falling off, thereby affecting the normal operation of the rotor.

[0024] Bearing columns 14 are provided at both the front and rear ends of the main shaft 1. At one end of each of the two bearing columns 14 close to the main shaft 1, a mounting block 16 is fixedly connected, and bearings 15 are mounted on both of the two bearing columns 14. Mounting holes 20 are provided on both of the two mounting blocks 16, mounting grooves 17 are provided at both the front and rear ends of the main shaft 1, two bolts 18 are provided on the main shaft 1, the two bolts 18 respectively penetrate through the two mounting grooves 17, and the two bolts 18 both penetrate through the main shaft 1. Second nuts 19 are threadedly sleeved on both of the two bolts 18. The mounting block 16 is rectangular, and the shape of the mounting groove 17 corresponds to that of the mounting block 16. The two mounting blocks 16 are respectively inserted and clamped in the two mounting grooves 17. Subsequently, the two bolts 18 penetrate through the corresponding mounting holes 20, and the corresponding second nuts 19 are tightened, so as to mount the two bearing columns 14 at the front and rear ends of the main shaft 1. When disassembly is required, only the second nuts 19 need to be unscrewed, and the corresponding bolts 18 are pulled out, then the bearing columns 14 can be disassembled, realizing the modular detachable design of the bearings 15. When one of the bearings 15 is damaged and needs to be replaced, only the corresponding bearing column 14 needs to be disassembled and replaced.

[0025] When the present utility model is in use, several rotor laminations 7 are sleeved on the main shaft 1 through the first limiting holes 8. At the same time, four threaded columns 4 respectively pass through four second limiting holes 9 on each rotor lamination 7 to limit them. Each rotor lamination 7 abuts against the bottom plate 3. By tightening each first nut 6, the pressing plate 5 is pressed towards the bottom plate 3 until each rotor lamination 7 is tightly squeezed by the pressing plate 5 and the bottom plate 3 to form a rotor core. Through the limitation of the first limiting holes 8 and the second limiting holes 9 by the four threaded columns 4 and the two limiting blocks 2, when the rotor core rotates, it drives the main shaft 1 to rotate. The two mounting blocks 16 are respectively inserted and clamped in the two mounting grooves 17, and the corresponding second nuts 19 are tightened, so as to mount the two bearing columns 14 at the front and rear ends of the main shaft 1. When disassembly is required, only the second nuts 19 need to be unscrewed, and the corresponding bolts 18 are pulled out, then the bearing columns 14 can be disassembled, realizing the modular detachable design of the bearings 15. When one of the bearings 15 is damaged and needs to be replaced, only the corresponding bearing column 14 needs to be disassembled and replaced.

[0026] The above is only a preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present utility model.

Claims

1. A synchronous reluctance motor rotor mounting structure, comprising a main shaft (1), characterized in that: Two symmetrically arranged limit blocks (2) are provided on the cylindrical outer wall of the main shaft (1); a base plate (3) is fixedly sleeved on the main shaft (1); four threaded columns (4) are fixedly connected to the front end of the base plate (3); a pressure plate (5) is slidably sleeved on the main shaft (1); the pressure plate (5) is located in front of the base plate (3); the four threaded columns (4) all penetrate the pressure plate (5) and are slidably connected thereto; a first nut (6) is sleeved on the four threaded columns (4); the four first nuts (6) are located at the front end of the pressure plate (5) and fit thereto; and a plurality of rotor laminations (7) are provided between the pressure plate (5) and the base plate (3).

2. A synchronous reluctance motor rotor mounting structure according to claim 1, characterized in that: A first limiting hole (8) is provided on each of the plurality of rotor laminations (7), and the shape of the first limiting hole (8) is arranged corresponding to the shape of the main shaft (1) and the two limiting blocks (2). The main shaft (1) and the two limiting blocks (2) pass through the first limiting hole (8). Four second limiting holes (9) are provided on each of the plurality of rotor laminations (7), and the four threaded columns (4) respectively pass through the four second limiting holes (9) on each of the rotor laminations (7).

3. A synchronous reluctance motor rotor mounting structure according to claim 1, characterized in that: A plurality of air magnetic barriers (10) are provided on each of the rotor laminations (7), a plurality of magnetic steel slots (11) are provided on each of the rotor laminations (7), and a magnetic steel (12) is installed in each of the magnetic steel slots (11).

4. A synchronous reluctance motor rotor mounting structure according to claim 1, characterized in that: The four upper, lower, left and right side walls of the bottom plate (3) and the pressing plate (5) are all fixedly connected to the limiting strips (13).

5. The synchronous reluctance motor rotor mounting structure according to claim 1, characterized in that: The front and rear ends of the main shaft (1) are both provided with bearing columns (14); one end of the two bearing columns (14) close to the main shaft (1) is fixedly connected with a mounting block (16); and bearings (15) are both installed on the two bearing columns (14).

6. A synchronous reluctance motor rotor mounting structure according to claim 5, characterized in that: The two mounting blocks (16) are each provided with a mounting hole (20), the front and rear ends of the main shaft (1) are each provided with a mounting groove (17), the main shaft (1) is provided with two bolts (18), the two bolts (18) respectively penetrate the two mounting grooves (17), the two bolts (18) penetrate the main shaft (1), and the two bolts (18) are each threadedly sleeved with a second nut (19).

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