High-rotating-speed and high-power motor rotor structure and motor

Abstract

The utility model discloses a high-rotating-speed and high-power motor rotor structure and a motor. The high-rotating-speed and high-power motor rotor structure comprises a rotating shaft, a rotor iron core arranged on the rotating shaft in a sleeving mode, a plurality of conducting bars fixed to the rotor iron core in the circumferential direction and end rings arranged at the two ends of the rotor iron core, and the two ends of each conducting bar protrude out of the two ends of the rotor iron core respectively and are fixedly connected with the end rings. An annular warp-wise groove is formed in the outer circle of the end ring, and the end ring further comprises a fiber line wound in the groove. The end ring is wound with the fiber line, the structure is simple and reliable, the strength is better than that of the end ring or the end ring and alloy sheath structure, and therefore deformation is not prone to occurring, and the throwing failure risk and the falling risk are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a rotor structure and a motor of a high-speed and high-power motor. Background Art

[0002] The rotor structures of existing high-speed and high-power motors mainly adopt copper end rings or a structure of a high-strength forged alloy sheath thermally sleeved on the outer circle of the copper end ring. During the operation of high-speed and high-power motors, the copper end rings often deform under the action of high-speed centrifugal force, resulting in the risk of large-scale failure; when using a high-strength forged alloy sheath thermally sleeved on the outer circle of the copper end ring, the material and manufacturing costs are expensive, and there is also a risk of sheath shedding from time to time.

[0003] Therefore, it is necessary to develop a new rotor structure for high-speed and high-power motors to solve the above technical problems. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a rotor structure and a motor of a high-speed and high-power motor.

[0005] To achieve the above utility model purpose, the utility model adopts the following technical scheme: A rotor structure of a high-speed and high-power motor, which includes a rotating shaft, a rotor core sleeved on the rotating shaft, a plurality of conducting bars circumferentially fixed on the rotor core, and end rings arranged at both ends of the rotor core. Both ends of the plurality of conducting bars respectively protrude from both ends of the rotor core and are fixedly connected to the end rings. An annular radial groove is arranged on the outer circle of the end ring, and the end ring further includes a fiber wire wound in the groove.

[0006] As a further improved technical scheme of the utility model, the fiber wire is a carbon fiber wire or a Kevlar wire.

[0007] As a further improved technical scheme of the utility model, the groove includes an annular concave surface and retaining platforms on both sides, and the fiber wire is wound on the concave surface and limited by the retaining platforms on both sides.

[0008] As a further improved technical scheme of the utility model, the winding height of the fiber wire is less than or equal to the height of the retaining platform.

[0009] As a further improved technical scheme of the utility model, the fiber wire is a carbon fiber wire wound into the groove by wet winding or dry winding.

[0010] As a further improved technical scheme of the utility model, the fiber wire is a carbon fiber wire wound into the groove by the way of semi-laminating with pre-tension.

[0011] As a further improved technical solution of the present utility model, the end ring includes a first end surface fixed to the bar and a second end surface disposed opposite to the first end surface, and an annular dovetail groove is provided on the second end surface.

[0012] As a further improved technical solution of the present utility model, an annular fixing groove for fixing the bar is provided on the first end surface.

[0013] As a further improved technical solution of the present utility model, the end ring includes a copper ring or an aluminum ring, and the fiber wire is wound around the copper ring or the aluminum ring.

[0014] The present utility model also discloses a motor, which includes the high-speed and high-power motor rotor structure as described above.

[0015] The beneficial effects of the present utility model are as follows: The end ring is wound with fiber wire, the structure is simple and reliable, the strength is better than that of the end ring or the structure of the end ring and the alloy sheath, so it is not easy to deform, avoiding the risks of large-scale failure and shedding, and the cost is only about 1 / 4 of that of the alloy sheath. Description of the Drawings

[0016] Figure 1 is a schematic structural view of the high-speed and high-power motor rotor structure of the present utility model;

[0017] Figure 2 is Figure 1 an enlarged schematic view of part A in the middle circle;

[0018] Figure 3 is Figure 2 a schematic view of the part without the fiber wire wound in the middle. Detailed Embodiments

[0019] The present utility model will be described in detail below in conjunction with the embodiments shown in the drawings. Please refer to the drawings, which are the preferred embodiments of the present utility model. It should be noted that these embodiments are not limitations to the present utility model, and any equivalent transformation or substitution in terms of function, method, or structure made by those of ordinary skill in the art based on these embodiments shall fall within the protection scope of the present utility model.

[0020] Please refer to Figure 1 and Figure 3, the present utility model discloses a high-speed and high-power motor rotor structure 100, which includes a rotating shaft 1, a rotor core 2 sleeved on the rotating shaft 1, a plurality of conducting bars 3 circumferentially fixed to the rotor core 2, and end rings 4 arranged at both ends of the rotor core 2. Both ends of the plurality of conducting bars 3 respectively protrude from both ends of the rotor core 2 and are fixedly connected to the end rings 4. An annular radial groove 41 is provided on the outer circle of the end ring 4, and the end ring 4 further includes a fiber line 42 wound in the groove. The end ring 4 is wound with the fiber line 42, with a simple and reliable structure, and its strength is superior to that of the end ring or the structure of the end ring and the alloy sheath, so it is not easily deformed, avoiding the risks of large-scale failure and falling off, and the cost is only about 1 / 4 of that of the alloy sheath.

[0021] Further, the fiber line is a carbon fiber line or a Kevlar line. The fiber line is a kind of fiber composite material, which improves the strength of the end ring.

[0022] Further, the groove 41 includes an annular concave surface 411 and retaining platforms 412 on both sides. The fiber line 42 is wound around the concave surface 411 and limited by the retaining platforms 412 on both sides. The winding height of the fiber line 42 is less than or equal to the height of the retaining platforms 412, which can prevent the two-side slip failure when the fiber line is wound or in use.

[0023] Further, the fiber line 42 is a carbon fiber line wound into the groove 41 by wet winding or dry winding. The fiber line 42 can be effectively fixed in the groove 41 through wet winding or dry winding. Specifically, the fiber line 42 is a carbon fiber line wound into the groove 41 by the way of pre-tension semi-laminating. A certain pre-tension is set for the fiber line 42 and it is wound by the semi-laminating method, and it can still be stably held in the groove 41 during high-speed use, strengthening the strength of the end ring 4.

[0024] Further, the end ring 4 includes a first end face 43 fixed to the conducting bar 3 and a second end face 44 opposite to the first end face 43. An annular dovetail groove 45 is provided on the second end face 44 of the end ring 4. The annular dovetail groove 45 for balancing is provided on the second end face 44 of the end ring 4 for the dynamic balance of the whole rotor structure 100.

[0025] Further, an annular fixing groove 46 for fixing the conducting bar 3 is provided on the first end face 43. The ends of the plurality of conducting bars 3 are respectively fixed in the fixing groove 46 along the circumference. The end ring 4 includes a copper ring or an aluminum ring, and the fiber line 42 is wound around the copper ring or the aluminum ring. The conducting bar 3 is a copper bar or an aluminum bar. The end ring 4 and the conducting bar 3 are fixedly connected into an integral structure by welding in the fixing groove 46.

[0026] The present utility model also discloses a motor, and the motor includes the high-speed and high-power motor rotor structure 100 as described above. The end ring 4 of the rotor structure 100 is not easily deformed, has a simple structure, relatively high strength, and low cost, so that the motor runs reliably.

[0027] It should be understood that although this specification is described in terms of embodiments, not every embodiment contains only an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0028] The series of detailed descriptions listed above are only specific descriptions of the feasible embodiments of the present invention, and they are not intended to limit the protection scope of the present invention. Any equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-speed, high-power motor rotor structure, characterized in that: It includes a rotating shaft, a rotor core sleeved on the rotating shaft, a plurality of guide bars fixed to the rotor core along the circumferential direction, and end rings arranged at both ends of the rotor core, the two ends of the plurality of guide bars respectively protrude from the two ends of the rotor core and are fixedly connected to the end rings, the outer circle of the end rings is provided with an annular longitudinal groove, and the end rings also include a fiber wire wound in the grooves.

2. The high-speed and high-power motor rotor structure according to claim 1 is characterized in that: The fiber line is a carbon fiber line or a Kevlar line.

3. The high-speed and high-power motor rotor structure according to claim 2 is characterized in that: The groove comprises an annular concave surface and baffles located on both sides, and the fiber line is wound around the concave surface and limited by the baffles located on both sides.

4. The high-speed and high-power motor rotor structure according to claim 3 is characterized in that: The winding height of the fiber line is less than or equal to the height of the baffle.

5. The high-speed and high-power motor rotor structure according to claim 1 is characterized in that: The fiber line is a carbon fiber line that is wet-wound or dry-wound into the groove.

6. The high-speed and high-power motor rotor structure according to claim 1 is characterized in that: The fiber line is a carbon fiber line wound into the groove in a pre-tensioned semi-overlapping manner.

7. The high-speed and high-power motor rotor structure according to claim 1 is characterized in that: The end ring includes a first end face fixed to the guide bar and a second end face arranged opposite to the first end face, wherein the second end face is provided with an annular dovetail groove.

8. The high-speed, high-power motor rotor structure according to claim 7, characterized in that: The first end surface is provided with an annular fixing groove for fixing the guide bar.

9. The high-speed and high-power motor rotor structure according to claim 1, characterized in that: The end ring includes a copper ring or an aluminum ring, and the fiber wire is wound around the copper ring or the aluminum ring.

10. A motor, characterized in that: The motor comprises a high-speed, high-power motor rotor structure as claimed in any one of claims 1 to 9.

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