Rotor device for shock-resistant permanent magnet motor

Abstract

The utility model relates to an anti-vibration rotor device for a permanent magnet motor, which comprises a rotor support, a bearing isolating ring connected to the periphery of the rotor support, a plurality of joining bumps distributed on the bearing isolating ring at intervals, iron core blocks inserted on the joining bumps, and butt joint grooves arranged at the bottom of the iron core blocks and corresponding to the joining bumps. Permanent magnet blocks are inserted between the iron core blocks, positioning grooves are formed in the side faces of the iron core blocks, and combination protruding strips extending outwards are arranged at the corresponding positions of the permanent magnet blocks and inserted into the positioning grooves. Therefore, the iron core block is matched with the connecting convex block in an inserting manner, and the butt joint groove is of an inverted trapezoidal structure, so that effective contact clamping can be realized. The permanent magnet blocks are also combined in an inserting mode, the iron core blocks on the two adjacent sides can be locked in an auxiliary mode, tolerance gaps can be filled, good integrity is achieved after combination is completed, and the anti-seismic requirement in the using period is met. And a screw assembly can be adopted for auxiliary locking, so that the combination integrity is better improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of parts for motor, in particular to a kind of rotor device for shockproof permanent magnet motor. BACKGROUND

[0002] In order to meet the high power density ratio of motor, the rotor device attached thereto often needs to have better waterproof and shockproof effects. However, the magnetic isolation mechanism constructed on the current rotor device has a fitting tolerance, which is prone to shaking during high-speed operation, affecting the stable output of power. In order to reduce this defect, a high-precision rotor support is often needed. At the same time, the isolation ring is set by interference fit, which is prone to wear of the joint surface during assembly, reducing the surface stress resistance effect. After long-term use, local cracks may occur, affecting the service life.

[0003] In view of the above defects, the present design person actively researches and innovates to create a rotor device for shockproof permanent magnet motor, which has more industrial utilization value. SUMMARY

[0004] To solve the above technical problems, the purpose of the utility model is to provide a rotor device for shockproof permanent magnet motor.

[0005] The rotor device for shockproof permanent magnet motor of the utility model comprises a rotor support, wherein: a bearing isolation ring is connected to the periphery of the rotor support, a plurality of connection protrusions are distributed at intervals on the bearing isolation ring, an iron core block is connected to the connection protrusions, a butt joint groove is formed at the position corresponding to the connection protrusion at the bottom of the iron core block, the connection protrusion is embedded in the butt joint groove, a permanent magnet block is connected between the iron core blocks, a positioning groove is formed in the side surface of the iron core block, a combination protrusion extending outward is formed at the position corresponding to the permanent magnet block, and the combination protrusion is inserted into the positioning groove.

[0006] Further, the rotor device for shockproof permanent magnet motor described above, wherein the rotor support and the bearing isolation ring are connected by a screw assembly.

[0007] Further, the rotor device for shockproof permanent magnet motor described above, wherein a positioning hole is formed through the connection protrusion, a locking groove is formed at the corresponding position of the butt joint groove, and a screw assembly is arranged between the positioning hole and the locking groove.

[0008] Further, the rotor device for shockproof permanent magnet motor described above, wherein the cross section of the butt joint groove is inverted trapezoidal.

[0009] Further, the rotor device for shockproof permanent magnet motor described above, wherein a circular arc chamfer is arranged at the bottom of the butt joint groove.

[0010] Further, the anti-vibration permanent magnet motor rotor device, wherein the adapter protrusion is sleeved with an expansion ring, and the periphery of the expansion ring is in contact with the butt joint groove.

[0011] Further, the anti-vibration permanent magnet motor rotor device, wherein the diameter of the expansion ring is 0.5-2.5 mm.

[0012] Further, the anti-vibration permanent magnet motor rotor device, wherein the cross section of the expansion ring is oval.

[0013] Further, the anti-vibration permanent magnet motor rotor device, wherein a rubber coating layer is distributed between the rotor support and the bearing isolation ring.

[0014] Further, the anti-vibration permanent magnet motor rotor device, wherein the top of the permanent magnet block is coated with a resin top seal, and the two ends of the resin top seal are in contact with the iron core block.

[0015] By the above scheme, the anti-vibration permanent magnet motor rotor device has at least the following advantages:

[0016] 1. The iron core block is connected with the adapter protrusion, and the butt joint groove is in inverted trapezoidal structure, so that effective contact and clamping can be achieved.

[0017] 2. The permanent magnet block is also connected in a plug-in manner, and the iron core blocks on the two adjacent sides can be assisted to be locked, so that the tolerance gap can be filled, and after the connection is completed, better integration is achieved, and the anti-vibration requirement during use is met.

[0018] 3. The screw assembly can be used for auxiliary locking, and the integration is better improved.

[0019] 4. The adapter protrusion can be sleeved with an expansion ring, and the deformation generated by the extrusion of the expansion ring can fill the connection gap, and the plug-in solidification is better achieved.

[0020] 5. The overall structure is simple, and the existing bearing isolation ring can be modified, and the implementation is facilitated.

[0021] The above description is only a summary of the technical scheme of the utility model, in order to more clearly understand the technical means of the utility model, and the content of the specification can be implemented, the following preferred embodiments of the utility model are described in detail with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0022] Fig. 1 is a local combination schematic view of the anti-vibration permanent magnet motor rotor device.

[0023] Fig. 2 is a cross-sectional view of the iron core block.

[0024] Fig. 3is a cross-sectional view of a permanent magnet block.

[0025] The meanings of the reference numerals in the drawings are as follows.

[0026] 1 rotor support 2 load bearing spacer ring

[0027] 3 abutment protrusion 4 core block

[0028] 5 abutment groove 6 permanent magnet block

[0029] 7 positioning groove 8 coupling protrusion

[0030] 9 screw assembly 10 expansion ring

[0031] 11 resin seal DETAILED DESCRIPTION

[0032] The specific embodiments of the utility model will be described in further detail below in combination with the drawings and examples. The following examples are used to illustrate the utility model, but are not used to limit the scope of the utility model.

[0033] As Figs. 1 to 3 The rotor device for the anti-vibration permanent magnet motor comprises a rotor support 1, which is different in that a load bearing spacer ring 2 is connected to the periphery of the rotor support 1 to meet the matching needs during subsequent operation. Meanwhile, a plurality of abutment protrusions 3 are distributed at intervals on the load bearing spacer ring 2, and core blocks 4 are connected to the abutment protrusions 3. Specifically, the bottom of each core block 4 is provided with an abutment groove 5 corresponding to the position of the abutment protrusion 3, and the abutment protrusion 3 is embedded in the abutment groove 5. In this way, the core blocks 4 are embedded and positioned, and the bottom of the core blocks 4 will not shake. Furthermore, permanent magnet blocks 6 are connected between the core blocks 4 to realize permanent magnet configuration. During implementation, positioning grooves 7 are formed on the side surfaces of the core blocks 4, and coupling protrusions 8 extending outward from the corresponding positions of the permanent magnet blocks 6 are inserted into the positioning grooves 7. In this way, stable connection can be realized, and the connection can be locked, achieving an effect similar to cross locking, which can better prevent the permanent magnet blocks 6 from shaking during high-speed operation. In addition, the core blocks 4, the permanent magnet blocks 6, and the load bearing spacer ring 2 are all combined by embedding, which can form stress restraint between them and prevent them from loosening.

[0034] In a preferred embodiment of the utility model, the rotor support 1 and the load bearing spacer ring 2 are locked and connected by screw assemblies 9 to achieve auxiliary locking. Meanwhile, in order to better lock the bottom of the core blocks 4, positioning holes are formed through the abutment protrusions 3, and locking grooves are formed in the abutment grooves 5 at corresponding positions, and screw assemblies 9 are arranged between the positioning holes and the locking grooves. Of course, long screws can be used during implementation to consider the abutment and positioning needs of the rotor support 1, the load bearing spacer ring, and the core blocks 4. If there is a coupling tolerance, a gasket can be added to the long screw, which will not be described here.

[0035] Further, in order to let the iron core block 4 and the adapter protrusion 3 during the joint, the combination end face of both has the similar fit of the interference fit, the utility model adopts the inverted trapezoidal cross section of the butt joint groove 5. In this way, in the initial stage of combination, relying on the inverted trapezoidal structure of wide upper and tight lower, certain joint guide can be carried out. At the same time, after the joint is completed, the lower end of the inverted trapezoidal butt joint groove 5 is completely buckled to the adapter protrusion 3. And the bottom of the butt joint groove 5 is provided with a circular arc chamfer, which avoids the jamming due to force error in the initial stage of joint, facilitates the convenient adjustment of the assembly personnel, and ensures the stability of the final joint.

[0036] In combination with the actual implementation, the adapter protrusion 3 is provided with an expansion ring 10, and the periphery of the expansion ring 10 is in contact with the butt joint groove 5. At the same time, the diameter of the expansion ring 10 is 0.5 to 2.5 mm, and the cross section of the expansion ring 10 is oval. In this way, after the joint is completed, the expansion characteristics of the expansion ring 10 can be used to fill the tolerance gap that may exist between the side walls, so that the bottom of the iron core block 4 does not loosen. During use, the effect of 1.5 mm is better.

[0037] Further, in order to ensure the stability of the final combination, a rubber coating layer can be distributed between the rotor support 1 and the bearing isolation ring 2 for auxiliary bonding. It can fill the edge gap of the combination surface of the two, increase the elasticity of the rotor support 1 and the bearing isolation ring 2 against shock and displacement. And the top of the permanent magnet block 6 can be coated with a resin sealing 11, and the two ends of the resin sealing 11 are in contact with the iron core block 4. In this way, the top of the permanent magnet block 6 can be combined and sealed, and the top can be prevented from shaking. At the same time, the intrusion of water vapor, dust and other improper foreign matters can be avoided, and the intrusion of corrosive liquid in some special use environment can also be prevented, so that the service life is improved.

[0038] The working principle of the utility model is as follows:

[0039] The user first completes the joint of the adjacent two iron core blocks 4 and the corresponding adapter protrusions 3. Then, the permanent magnet block 6 is pushed into the adjacent two iron core blocks 4, and the joint is realized by the cooperation of the combination protrusions 8 and the positioning grooves 7. The three are stressed and restrained relative to each other, and after all the joints are completed, a complete closed loop structure is formed, which can fill all possible tolerance gaps and has better shock resistance and integration.

[0040] After the joint of the iron core block 4 and the permanent magnet block 6 is completed, the secondary locking can be realized through the screw assembly 9.

[0041] Then, according to the needs, it is selected whether to coat the resin sealing 11 on the top of the permanent magnet block 6.

[0042] Finally, the assembly of the whole rotor device is satisfied.

[0043] Through the above text expression and combining with the drawings, it can be seen that after adopting the utility model, the following advantages are owned.

[0044] 1, the core block is connected with the adapter block, and the butt joint groove is inverted trapezoidal structure, which can realize effective contact clamping.

[0045] 2, the permanent magnet block also adopts the plug-in mode, and the iron core blocks on the two adjacent sides can be assisted to lock, the tolerance gap can be filled, and after the combination is completed, better integration is owned, and the anti-shock requirement during use is met.

[0046] 3, the screw assembly can be used for auxiliary locking, and the combination integration is better improved.

[0047] 4, the adapter block can be sleeved with an expansion ring, and the combination gap is filled by the deformation generated by extrusion, and the plug-in solidification is better realized.

[0048] 5, the overall structure is simple, the existing bearing isolation ring can be modified, and the implementation is convenient.

[0049] In addition, the indicating direction or position relationship described in the utility model is based on the direction or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and is not indicative or suggestive of the device or structure indicated must have a specific direction, or be operated in a specific direction, therefore, it cannot be understood as a limitation of the utility model.

[0050] The above is only the preferred embodiment of the utility model, and is not used to limit the utility model, it should be pointed out that for ordinary skilled person in the art, on the premise of not departing from the technical principle of the utility model, a number of improvements and modifications can be made, and these improvements and modifications should be regarded as the protection scope of the utility model.

Claims

1. A rotor assembly for a vibration-resistant permanent magnet motor, comprising a rotor support, characterized in that: The rotor support is connected to a bearing isolation ring. Several connecting protrusions are distributed at intervals on the bearing isolation ring. Iron core blocks are inserted into the connecting protrusions. A docking groove is opened at the bottom of the iron core block corresponding to the position of the connecting protrusion. The connecting protrusion is embedded in the docking groove. Permanent magnet blocks are inserted between the iron core blocks. A positioning groove is opened on the side of the iron core block. A connecting protrusion extends outward at the corresponding position of the permanent magnet block. The connecting protrusion is inserted into the positioning groove.

2. The rotor device for an anti-vibration permanent magnet motor according to claim 1, characterized in that: The rotor support and the load-bearing isolation ring are connected by a screw assembly.

3. The rotor device for an anti-vibration permanent magnet motor according to claim 1, characterized in that: The connecting protrusion has a positioning hole, the mating groove has a locking groove at the corresponding position, and a screw assembly passes between the positioning hole and the locking groove.

4. The rotor device for an anti-vibration permanent magnet motor according to claim 1, characterized in that: The cross-section of the docking groove is an inverted trapezoid.

5. The rotor device for an anti-vibration permanent magnet motor according to claim 1, characterized in that: The bottom of the docking groove is provided with a rounded chamfer.

6. The rotor device for an anti-vibration permanent magnet motor according to claim 1, characterized in that: The connecting protrusion is fitted with an expansion ring, the outer periphery of which contacts the mating groove.

7. The rotor device for an anti-vibration permanent magnet motor according to claim 6, characterized in that: The diameter of the expansion ring is 0.5 to 2.5 mm.

8. The rotor device for an anti-vibration permanent magnet motor according to claim 6, characterized in that: The cross-section of the expansion ring is elliptical.

9. The rotor device for an anti-vibration permanent magnet motor according to claim 1, characterized in that: An adhesive layer is distributed between the rotor support and the load-bearing isolation ring.

10. The rotor device for an anti-vibration permanent magnet motor according to claim 1, characterized in that: The top of the permanent magnet block is coated with resin, and the two ends of the resin cap are in contact with the iron core block.

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