Magnetic steel assembling structure of permanent magnet rotor

Abstract

The utility model discloses a permanent magnet rotor magnetic steel assembling structure, which is provided with a motor shaft, a rotor key is arranged outside the motor shaft, rotor punching sheets and rotor pressing rings are pressed and placed outside the motor shaft after being laminated, and the rotor pressing rings at the two ends of the rotor punching sheets are respectively abutted against a shaft shoulder of the motor shaft and a rotor stop block. The screw rod penetrates through unthreaded holes of the rotor pressing ring and the rotor punching sheet and then is fixed through a nut, the rotor punching sheet is provided with a V-shaped groove, the magnetic steel is inserted into a V-shaped channel, the rotor punching sheet is provided with a round hole, the rotor tooth pressing plates are placed at the two ends of the rotor punching sheet, and the second bolt penetrates through the rotor tooth pressing plates and the round channel and is fixed through a nut. The motor rotor has the advantages that the rotor tooth pressure plate and the rotor baffle plate are of a split structure, material is saved during blanking, the processing amount is reduced, the deformation amount is reduced, the installation is convenient, and the split structure is adopted, so that the magnetic steel with problems can be taken out from the other end if the magnetic steel is wrongly installed or damaged. The production efficiency is improved, and the installation difficulty is reduced.

Description

Technical Field

[0001] The utility model relates to the field of machinery, in particular to a permanent magnet rotor magnetic steel assembly structure. Background Art

[0002] As the power of motors increases, the difficulty of cutting, processing and assembling motor parts increases accordingly. The installation process of permanent magnet motor magnets has always been the main difficulty in the production of permanent magnet motors. The difficulties encountered in the production process are: the magnet assembly is difficult, and it is easy to make mistakes in the installation of the magnets and damage after installation; the motor parts are too large, which makes processing difficult, and after processing, the deformation is more serious. Utility Model Content

[0003] To solve the above technical problems, after detailed analysis, the purpose of the utility model is to provide a permanent magnet rotor magnetic steel assembly structure, including using a rotor pressure ring and screws, washers, spring washers, and nuts to press and fix the rotor punchings, and then using a split rotor tooth pressure plate to press the outside of the rotor punchings, tighten and fix them with screws, and then use a split rotor baffle to fix the outside.

[0004] The specific technical solutions are as follows:

[0005] A permanent magnet rotor magnetic steel assembly structure is provided with a motor shaft. A rotor key is arranged on the outside of the motor shaft. After the rotor punching is stacked, it is press-fitted with the rotor pressing ring and inserted into the outside of the motor shaft. The rotor pressing rings at both ends of the rotor punching are respectively abutted against the shaft shoulder and the rotor stopper of the motor shaft. After the screw passes through the light holes of the rotor pressing ring and the rotor punching, it is tightened and fixed by nuts. V-shaped grooves are provided on the rotor punching. After the rotor punching is stacked, the V-shaped grooves form V-shaped channels. The magnetic steel is also arranged in a V shape and inserted into the V-shaped channels. Circular holes are also provided on the rotor punching. After the rotor punching is stacked, the circular holes form circular channels. Rotor tooth pressure plates are placed at both ends of the pressed rotor punching. After the second bolt passes through the rotor tooth pressure plate and the circular channel, the two ends of the second bolt are tightened and fixed by nuts.

[0006] The outer shape of the rotor tooth pressure plate is complementary to the outer shape structure of the rotor pressure ring.

[0007] The rotor tooth pressure plate and the rotor pressure ring are located in the same plane.

[0008] A rotor baffle is arranged above the two rotor tooth pressure plates, and two ends of the rotor baffle are respectively fixed on each rotor tooth pressure plate.

[0009] The advantages of the utility model are: the rotor tooth pressure plate and the rotor baffle are split structures, the cutting is simple, the processing is easy, there is no special requirement for the processing equipment, and the parts are basically not deformed after processing; when installing the magnetic steel, only the partial rotor tooth pressure plate and the rotor baffle can be removed to complete the installation of the magnetic steel, and the neatness and integrity of other groove types of the punching sheet can be ensured; if the magnetic steel is installed incorrectly or damaged, the wrong magnetic steel or the damaged magnetic steel can be removed from the other end to reduce the degree of damage to the punching sheet. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0011] Figure 2 It is a schematic diagram of the overall structure with one side of the rotor stopper;

[0012] Figure 3 It is a schematic diagram of the motor shaft structure;

[0013] Figure 4 It is a schematic diagram of the rotor punching structure;

[0014] Figure 5 This is a schematic diagram of the rotor pressure ring structure. DETAILED DESCRIPTION

[0015] A permanent magnet rotor magnetic steel assembly structure is provided, and a motor shaft 1 is provided. A rotor key 2 is provided on the outside of the motor shaft 1. After the rotor punching 3 is stacked, it is press-fitted with the rotor pressing ring 4 and inserted into the outside of the motor shaft. The rotor pressing rings 4 at both ends of the rotor punching 3 are respectively abutted against the shaft shoulder 1a of the motor shaft and the rotor stopper 11. After the screw 5 passes through the rotor pressing ring and the light hole 3a of the rotor punching, it is tightened and fixed by a nut. A V-shaped groove 7 is provided on the rotor punching. After the rotor punching 3 is stacked, the V-shaped groove forms a V-shaped channel. The magnetic steel 8 is also arranged in a V shape and inserted into the V-shaped channel. A circular hole 3b is also provided on the rotor punching 3. After the rotor punching 3 is stacked, the circular hole 3b forms a circular channel. The rotor tooth pressure plate 6 is placed at both ends of the pressed rotor punching 3. After the second bolt 9 passes through the rotor tooth pressure plate 6 and the circular channel, the two ends of the second bolt 9 are tightened and fixed by nuts.

[0016] The outer shape of the rotor tooth pressure plate 6 is complementary to the outer shape structure of the rotor pressure ring 4 .

[0017] The rotor tooth pressure plate 6 and the rotor pressure ring 4 are located in the same plane.

[0018] A rotor baffle 10 is disposed above the two rotor tooth pressure plates 6 , and two ends of the rotor baffle 10 are respectively fixed on each rotor tooth pressure plate 6 .

[0019] The working principle of the utility model is:

[0020] 1) Stack the rotor pressing ring 4 and the rotor punching sheet 3, use a screw to pass through the light holes of the rotor pressing ring and the rotor punching sheet, press them according to the specified size, and then tighten and fix them at both ends of the rotor pressing ring with washers, spring washers and nuts.

[0021] 2) Install and secure the motor shaft and rotor key into the device in step 1).

[0022] 3) Install the rotor tooth pressure plate to the front and rear ends of the stacked rotor punchings, fix it with a second screw and washers, spring washers, and nuts, and use a rotor stopper to install and fix it to prevent the entire rotor core from moving.

[0023] 4) When installing the magnet, remove a piece of rotor tooth pressure plate, install the magnet, and then reinstall the rotor tooth pressure plate after installation, tighten and fix it with the second bolt, and install the magnets in each slot in turn. If the installation is wrong or the magnet is damaged, the rotor tooth pressure plate at the other end corresponding to this slot can be removed, and the wrong or damaged magnet can be removed from the other end. After completion, use the rotor baffle to tighten and fix it with bolts and outer tongue stop washers, and the overall assembly of the rotor is completed.

Claims

1. A permanent magnet rotor magnetic steel assembly structure, a motor shaft is provided, a rotor key is provided outside the motor shaft, the rotor punching is pressed and installed with the rotor pressing ring outside the motor shaft after being stacked, the rotor pressing rings at both ends of the rotor punching are respectively abutted against the shaft shoulder of the motor shaft and the rotor stopper, the screw passes through the light hole of the rotor pressing ring and the rotor punching, and is tightened and fixed by a nut, characterized in that: The rotor punching is provided with a V-shaped groove. After the rotor punching is stacked, the V-shaped groove forms a V-shaped channel. The magnetic steel is also arranged in a V shape and inserted into the V-shaped channel. The rotor punching is also provided with a circular hole. After the rotor punching is stacked, the circular hole forms a circular channel. The rotor tooth pressure plate is placed at both ends of the pressed rotor punching. After the second bolt passes through the rotor tooth pressure plate and the circular channel, the two ends of the second bolt are tightened and fixed by nuts.

2. The permanent magnet rotor magnetic steel assembly structure according to claim 1 is characterized in that: The outer shape of the rotor tooth pressure plate is complementary to the outer shape structure of the rotor pressure ring.

3. The permanent magnet rotor magnetic steel assembly structure according to claim 1 is characterized in that: The rotor tooth pressure plate and the rotor pressure ring are located in the same plane.

4. The permanent magnet rotor magnetic steel assembly structure according to claim 1 is characterized in that: A rotor baffle is arranged above the two rotor tooth pressure plates, and two ends of the rotor baffle are respectively fixed on each rotor tooth pressure plate.

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