Motor rotor disc and motor

Abstract

The utility model discloses a motor rotor disc and a motor, the motor rotor disc comprises a disc body, the disc body is 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 utility model has the advantages of optimized structure, good heat dissipation performance, stable dynamic balance and the like.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, and in particular to a motor rotor disk and a motor. Background Technology

[0002] The motor rotor disc is a core component of the motor, and its performance directly affects the motor's efficiency and lifespan. Traditional rotor discs have the following problems:

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

[0004] 2. Insufficient heat dissipation design, which can easily lead to excessive temperature rise during long-term operation;

[0005] 3. Dynamic balance adjustment is difficult, and vibration is easily generated when operating at high speed. Utility Model Content

[0006] To address the aforementioned problems, this utility model provides a motor rotor disk and a motor, which has advantages such as optimized structure, good heat dissipation performance and stable dynamic balance.

[0007] The technical solution of this utility model is as follows:

[0008] An electric motor rotor disc, comprising a disc body;

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

[0010] The outer disk is provided with a rotating shaft connection part, and the inner disk is provided with a permanent magnet mounting groove;

[0011] The outer disk has multiple heat dissipation holes evenly distributed around its circumference, and the inner disk has an axial heat dissipation duct at its center.

[0012] The outer edge of the disc is provided with a dynamic balance adjustment groove, and a detachable counterweight is embedded in the dynamic balance adjustment groove.

[0013] In a further technical solution, the permanent magnet mounting groove is a dovetail groove structure, and the permanent magnet mounting groove is filled with a thermally conductive silicone layer.

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

[0015] In a further technical solution, at least two symmetrically distributed locating pins and locating pin holes are respectively provided on the contact surfaces of the inner and outer disks, and the locating pins and locating pin holes are interference-fitted.

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

[0017] In a further technical solution, the shaft connection part 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 screws.

[0019] This utility model also provides an electric motor equipped with the aforementioned motor rotor disc.

[0020] The beneficial effects of this utility model are:

[0021] 1. The disc body of this utility model adopts a split structure, which is convenient for installation and maintenance and reduces the processing difficulty;

[0022] 2. This utility model adopts a composite heat dissipation design, which improves heat dissipation efficiency and reduces temperature rise through heat dissipation holes and axial air ducts;

[0023] 3. This utility model can adjust the dynamic balance through counterweights, thereby reducing vibration and noise. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the outer disk structure according to an embodiment of the present utility model;

[0025] Figure 2 This is a schematic diagram of the inner disk structure according to an embodiment of the present utility model.

[0026] Explanation of reference numerals in the attached figures:

[0027] 10. Outer plate; 11. Dynamic balance adjustment slot; 12. Heat dissipation hole; 13. Shaft connection part; 20. Inner plate; 21. Permanent magnet mounting slot; 22. Heat dissipation duct. Detailed Implementation

[0028] The embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0029] Example 1:

[0030] An electric motor rotor disc, comprising a disc body;

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

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

[0033] The outer disk 10 is provided with a plurality of heat dissipation holes 12 evenly distributed around its circumference, and the inner disk 20 is provided with an axial heat dissipation air duct 22 at its center.

[0034] The outer disk 10 is provided with a dynamic balance adjustment groove 11 on its edge, 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 the permanent magnet mounting groove 21 is filled with a thermally conductive silicone layer.

[0036] In another embodiment, the heat dissipation holes 12 are spirally distributed, and the axis of each heat dissipation hole 12 is inclined at a 5°-15° angle to the radial direction of the disk.

[0037] In another embodiment, at least two symmetrically distributed locating pins and locating pin holes are respectively provided on the contact surfaces of the inner disk 20 and the outer disk 10, and the locating pins and locating pin holes are interference-fitted.

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

[0039] In another embodiment, such as Figure 1 As shown, the rotating shaft connection part 13 has 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 screws.

[0041] Example 2:

[0042] An electric motor equipped with the motor rotor disk described in the above embodiments.

[0043] The embodiments described above merely illustrate specific implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A motor rotor disc, comprising a disc body, characterized in that: the disc body is a split structure, comprising an inner disc and an outer disc, the inner disc and the outer disc being detachably connected through bolts; a shaft connecting portion is arranged on the outer disc, and a permanent magnet mounting groove is arranged on the inner disc; a plurality of heat dissipation holes are uniformly arranged on the outer disc in the circumferential direction, and an axial heat dissipation air duct is arranged at the center of the inner disc; a dynamic balance adjusting groove is arranged at the edge of the outer disc, and a detachable counterweight block is embedded in the dynamic balance adjusting groove.

2. The motor rotor disc according to claim 1, characterized in that: the permanent magnet mounting groove is a dovetail groove structure, and a heat-conducting silica gel layer is filled in the permanent magnet mounting groove.

3. The motor rotor disc according to claim 1, characterized in that: the heat dissipation holes are distributed in a spiral shape, and the axis of each heat dissipation hole is 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 arranged on the contact surfaces of the inner disc and the outer disc respectively, 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: high-temperature-resistant and oxidation-resistant coating layers are coated on the surfaces of the inner disc and the outer disc, and the thickness of the high-temperature-resistant and oxidation-resistant coating layers is 0.1mm-0.3mm.

6. The motor rotor disc according to claim 1, characterized in that: the shaft connecting portion is a key groove 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 adjusting groove through a countersunk screw.

8. An electric machine characterized by: The motor rotor disc according to any one of claims 1-7.

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