Motor rotor disc and motor

Abstract

The motor rotor disc comprises a disc body, the disc body is of a split type structure and comprises an inner disc and an outer disc, and the inner disc and the outer disc are detachably connected through a bolt; a rotating shaft connecting part is arranged on the outer disc, and a permanent magnet mounting groove is formed in the inner disc; a plurality of heat dissipation holes are evenly formed in the outer disc in the circumferential direction, and an axial heat dissipation air channel is formed in the center of the inner disc. A dynamic balance adjusting groove is formed in the edge of the outer disc, and a detachable balancing weight is embedded in the dynamic balance adjusting groove. The invention has the advantages of optimized structure, good heat dissipation performance, stable dynamic balance and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and particularly to a motor rotor disk and a motor. Background Art

[0002] The motor rotor disk is a core component in a motor, and its performance directly affects the efficiency and lifespan of the motor. The traditional rotor disk has the following problems:

[0003] 1. The structure is mostly integral, making installation and maintenance inconvenient;

[0004] 2. The heat dissipation design is insufficient, and the temperature rise is likely to be too high during long-term operation;

[0005] 3. It is difficult to adjust the dynamic balance, and vibration is likely to occur during high-speed operation. Summary of the Invention

[0006] In view of the above problems, the present invention provides a motor rotor disk and a motor, which have the advantages of optimized structure, good heat dissipation performance, and stable dynamic balance.

[0007] The technical solution of the present invention is as follows:

[0008] A motor rotor disk includes a disk body;

[0009] The disk body has a split structure, including an inner disk and an outer disk, and the inner disk and the outer disk are detachably connected by bolts;

[0010] A shaft connection part is provided on the outer disk, and a permanent magnet installation groove is provided on the inner disk;

[0011] A plurality of heat dissipation holes are evenly formed in the circumferential direction of the outer disk, and an axial heat dissipation air duct is provided at the center of the inner disk;

[0012] A dynamic balance adjustment groove is provided at the edge of the outer disk, and a detachable counterweight block is embedded in the dynamic balance adjustment groove.

[0013] In a further technical solution, the permanent magnet installation groove has a dovetail groove structure, and a heat-conducting silicone layer is filled in the permanent magnet installation groove.

[0014] In a further technical solution, the heat dissipation holes are spirally distributed, and the axis of each heat dissipation hole is inclined at an angle of 5° - 15° with respect to the radial direction of the disk body.

[0015] In a further technical solution, at least two symmetrically distributed positioning pins and positioning pin holes are respectively provided on the contact surface between the inner disk and the outer disk, and the positioning pins and the positioning pin holes are in interference fit.

[0016] In a further technical solution, the surfaces of the inner disk and the outer disk are both coated with a high-temperature resistant and oxidation-resistant coating, and the thickness of the high-temperature resistant and oxidation-resistant coating is 0.1 mm - 0.3 mm.

[0017] In a further technical solution, the rotating shaft connecting portion is a keyway structure.

[0018] In a further technical solution, the counterweight is made of tungsten alloy and is fixed in the dynamic balance adjustment groove by countersunk head screws.

[0019] The present invention also provides a motor, which is equipped with the above-mentioned motor rotor disk.

[0020] The beneficial effects of the present invention are as follows:

[0021] 1. The disk body of the present invention adopts a split structure, which is convenient for installation and maintenance and reduces the processing difficulty;

[0022] 2. The present invention adopts a composite heat dissipation design, and improves the heat dissipation efficiency and reduces the temperature rise through heat dissipation holes and axial air ducts;

[0023] 3. The dynamic balance of the present invention can be adjusted by counterweights to reduce vibration and noise. Description of the Drawings

[0024] Figure 1 is a schematic structural diagram of the outer disk according to an embodiment of the present invention;

[0025] Figure 2 is a schematic structural diagram of the inner disk according to an embodiment of the present invention.

[0026] Description of the Reference Numerals:

[0027] 10. Outer disk; 11. Dynamic balance adjustment groove; 12. Heat dissipation holes; 13. Rotating shaft connecting portion; 20. Inner disk; 21. Permanent magnet installation groove; 22. Heat dissipation air duct. Detailed Embodiments

[0028] The following further describes the embodiments of the present invention with reference to the drawings.

[0029] Embodiment 1:

[0030] A motor rotor disk includes a disk body;

[0031] As Figure 1 and Figure 2 shown, the disk body is a split structure, including an inner disk 20 and an outer disk 10, and the inner disk 20 and the outer disk 10 are detachably connected by bolts;

[0032] The outer disk 10 is provided with a rotating shaft connecting portion 13, and the inner disk 20 is provided with a permanent magnet installation groove 21;

[0033] The outer disk 10 is circumferentially and uniformly provided with a plurality of heat dissipation holes 12, and the center of the inner disk 20 is provided with an axial heat dissipation air duct 22;

[0034] A dynamic balance adjustment groove 11 is provided at the edge of the outer disk 10, and a detachable counterweight is embedded in the dynamic balance adjustment groove 11.

[0035] In another embodiment, the permanent magnet mounting groove 21 is a dovetail groove structure, and a thermally conductive silicone layer is filled in the permanent magnet mounting groove 21.

[0036] In another embodiment, the heat dissipation holes 12 are spirally distributed, and the axes of the heat dissipation holes 12 are inclined at an angle of 5° - 15° with respect to the radial direction of the disk body.

[0037] In another embodiment, at least two symmetrically distributed positioning pins and positioning pin holes are respectively provided on the contact surface between the inner disk 20 and the outer disk 10, and the positioning pins and the positioning pin holes are in interference fit.

[0038] In another embodiment, the surfaces of the inner disk 20 and the outer disk 10 are both coated with a high-temperature and oxidation-resistant coating, and the thickness of the high-temperature and oxidation-resistant coating is 0.1 mm - 0.3 mm.

[0039] In another embodiment, as Figure 1 shown, the rotating shaft connecting portion 13 is a keyway structure.

[0040] In another embodiment, the counterweight is made of tungsten alloy and is fixed in the dynamic balance adjustment groove 11 by countersunk head screws.

[0041] Embodiment 2:

[0042] A motor is equipped with the motor rotor disk described in the above embodiment.

[0043] The above embodiments only represent the specific implementation manners of the present invention, and the description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A motor rotor disc, comprising a disc body, characterized in that: The disc body is a split structure, including an inner disc and an outer disc, and the inner disc and the outer disc are detachably connected by bolts; A shaft connection part is provided on the outer disc, and a permanent magnet installation groove is provided on the inner disc; A plurality of heat dissipation holes are evenly arranged in the circumferential direction of the outer disc, and an axial heat dissipation air duct is provided at the center of the inner disc; A dynamic balance adjustment groove is provided at the edge of the outer disc, and a detachable counterweight block is embedded in the dynamic balance adjustment groove.

2. The motor rotor disc according to claim 1, characterized in that: The permanent magnet installation groove is a dovetail groove structure, and a heat conductive silicone layer is filled in the permanent magnet installation groove.

3. The motor rotor disc according to claim 1, characterized in that: The heat dissipation holes are spirally distributed, and the axes of the heat dissipation holes are inclined at an angle of 5°-15° with respect to the radial direction of the disc body.

4. The motor rotor disc according to claim 1, characterized in that: At least two symmetrically distributed positioning pins and positioning pin holes are respectively provided on the contact surfaces of the inner disc and the outer disc, and the positioning pins and the positioning pin holes are in interference fit.

5. The motor rotor disc according to claim 1, characterized in that: The surfaces of the inner disc and the outer disc are both coated with a high-temperature and oxidation-resistant coating, and the thickness of the high-temperature and oxidation-resistant coating is 0.1mm-0.3mm.

6. The motor rotor disc according to claim 1, characterized in that: The shaft connection part is a keyway structure.

7. The motor rotor disc according to claim 1, characterized in that: The counterweight block is made of tungsten alloy and is fixed in the dynamic balance adjustment groove by countersunk head screws.

8. A motor, characterized in that: Including the motor rotor disc according to any one of claims 1-7.

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