A high-speed motor rotor winding anti-throwing device

Abstract

The present invention discloses a high-speed motor rotor winding anti-swing device, comprising a rotor core (1), a winding right end (2), a winding left end (3), a right end anti-swing ring (4), and a left end anti-swing ring (5). The device is characterized in that the right end anti-swing ring comprises a first ring portion (6) and a second ring portion (7), the first ring portion being made of a rigid metal material, and the second ring portion being made of an elastic metal material. When the motor is stationary, the second ring portion is in a first position, curved, and in contact with the outer peripheral surface of the winding right end; when the motor is at its highest speed, the second ring portion is in a second position, horizontal, and parallel to the rotation axis of the motor rotor; when the motor is between stationary and at its highest speed, the second ring portion is substantially in contact with the outer peripheral surface of the winding right end. The present invention can reduce the unbalance amount of the high-speed motor rotor during operation while ensuring winding anti-swing, thereby reducing the vibration of the motor.

Description

Technical Field

[0001] The present invention relates to the technical field of high-speed motors, and in particular to a high-speed motor rotor winding anti-throwoff device. Background Art

[0002] In order to prevent the radial displacement of the winding ends under the action of centrifugal force, an anti-swing ring is often used in the prior art. The prior art CN201528235U discloses an anti-swing device for the ends of the generator pole coils, and CN204179788U discloses a starter armature that prevents the windings from being thrown off.

[0003] For high-speed motor rotors, as the motor speed increases, the probability of radial displacement at the ends of the windings on both sides increases, and the gap or fitting tolerance between the winding ends and the anti-swing ring changes, which will cause the imbalance of the high-speed motor rotor to increase and cause the vibration of the motor to increase. Summary of the Invention

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a high-speed motor rotor winding anti-swing device, which comprises a right-end anti-swing ring including a first ring portion and a second ring portion, wherein the first ring portion is made of a rigid metal material and the second ring portion is made of an elastic metal material. When the motor is between a stationary state and a maximum speed, the second ring portion basically fits in contact with the outer peripheral surface of the right end portion of the winding, thereby ensuring the anti-swing of the winding while reducing the imbalance of the high-speed motor rotor operation and reducing the vibration of the motor.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] A high-speed motor rotor winding anti-swing device comprises a rotor core (1), a winding right end portion (2), a winding left end portion (3), a right end anti-swing ring (4), and a left end anti-swing ring (5), wherein the outer circumference of the winding right end portion is provided with the right end anti-swing ring, and the outer circumference of the winding left end portion is provided with the left end anti-swing ring, and the right end anti-swing ring and the left end anti-swing ring have the same structure, and is characterized in that: the right end anti-swing ring (4) comprises a first ring portion (6) and a second ring portion (7), the first ring portion is made of a rigid metal material, and the second ring portion is made of an elastic metal material, when the motor is stationary, the second ring portion is in a first position, and is curved and fits the outer circumference of the winding right end portion; when the motor is at the highest speed, the second ring portion is in a second position, and is horizontal, and the horizontal shape is parallel to the rotation axis of the motor rotor; when the motor is between stationary and at the highest speed, the second ring portion is basically fitted with the outer circumference of the winding right end portion.

[0007] Furthermore, the first ring portion (6) includes a step lower portion (8) and a step upper portion (9), the step lower portion is arranged to fit the outer peripheral surface of the right-end anti-swing ring, and the step upper portion is arranged to fit the outer peripheral surface of the rotor core, the first ring portion and the second ring portion are welded together, and the right-end anti-swing ring and the left-end anti-swing ring are welded together; it can increase the connection strength between the anti-swing ring and the motor rotor and achieve the fastening of the rotor core.

[0008] Furthermore, the first ring portion (6) and / or the second ring portion (7) are provided with through holes (10), and a plurality of through holes are distributed along the circumferential direction, and the through holes can increase the heat dissipation effect of the motor rotor.

[0009] Furthermore, when the motor is stationary, the second ring portion (7) is in the first position, at which time the axial distance between the right end face of the second ring portion and the right end face of the rotor core (1) is H, the axial distance between the right end face of the winding right end portion (2) and the right end face of the rotor core is also H, and the axial distance between the right end face of the first ring portion (6) and the right end face of the rotor core is h, where h=(0.3-0.6)H.

[0010] The present invention provides a high-speed motor rotor winding anti-swing device, which comprises a right-end anti-swing ring including a first ring portion and a second ring portion, wherein the first ring portion is made of a rigid metal material and the second ring portion is made of an elastic metal material. When the motor is between a stationary state and a maximum speed, the second ring portion basically fits in contact with the outer peripheral surface of the right end portion of the winding, thereby ensuring the anti-swing of the winding while reducing the imbalance of the high-speed motor rotor operation and reducing the vibration of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic structural diagram of the first position of the high-speed motor rotor winding anti-throwoff device of the present invention;

[0012] Figure 2 This is a schematic structural diagram of the second position of the high-speed motor rotor winding anti-throwoff device of the present invention;

[0013] Figure 3 It is a structural schematic diagram of the high-speed motor rotor winding anti-throwoff device of the present invention.

[0014] In the figure: rotor core 1, right end portion of winding 2, left end portion of winding 3, right end anti-swing ring 4, left end anti-swing ring 5, first ring portion 6, second ring portion 7 (7'), step lower portion 8, step upper portion 9, through hole 10. DETAILED DESCRIPTION

[0015] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0016] The present invention will be described in further detail below with reference to the accompanying drawings.

[0017] like Figure 1-3 As shown, a high-speed motor rotor winding anti-swing device includes a rotor core 1, a winding right end 2, a winding left end 3, a right end anti-swing ring 4, and a left end anti-swing ring 5. The outer circumference of the winding right end 2 is provided with the right end anti-swing ring 4, and the outer circumference of the winding left end 3 is provided with the left end anti-swing ring 5. The right end anti-swing ring 4 has the same structure as the left end anti-swing ring 5, and is characterized in that: the right end anti-swing ring 4 includes a first ring portion 6 and a second ring portion 7 (7'), the first ring portion 6 is made of a rigid metal material, and the second ring portion 7 is made of an elastic metal material. When the motor is stationary, the second ring portion 7 is in a first position, and is curved and fits the outer circumference of the winding right end 2. When the motor is at the highest speed, the second ring portion 7' ​​is in a second position and is horizontal, and the horizontal shape is parallel to the rotation axis of the motor rotor; when the motor is between stationary and at the highest speed, the second ring portion 7 basically fits the outer circumference of the winding right end 2.

[0018] For high-speed motor rotors, as the motor speed increases, the probability of radial displacement at the ends of the windings on both sides increases, and the gap or fitting tolerance between the winding ends and the anti-swing ring changes, which will cause the imbalance of the high-speed motor rotor to increase and cause the vibration of the motor to increase.

[0019] The present invention provides a high-speed motor rotor winding anti-swing device, which comprises a right-end anti-swing ring 4 including a first ring portion 6 and a second ring portion 7 (7'), wherein the first ring portion 6 is made of a rigid metal material and the second ring portion 7 is made of an elastic metal material. When the motor is between a stationary state and a maximum speed, the second ring portion 7 basically fits in contact with the outer peripheral surface of the right end portion 2 of the winding, thereby ensuring the anti-swing of the winding while reducing the imbalance of the high-speed motor rotor operation and reducing the vibration of the motor.

[0020] Furthermore, the first ring portion 6 includes a stepped lower portion 8 and a stepped upper portion 9. The stepped lower portion 8 is disposed in contact with the outer circumference of the right-end anti-swing ring 4, and the stepped upper portion 9 is disposed in contact with the outer circumference of the rotor core 1. The first ring portion 6 and the second ring portion 7 are formed by welding or other means, and the right-end anti-swing ring 4 and the left-end anti-swing ring 5 are formed by welding or other means. This can increase the connection strength between the anti-swing ring and the motor rotor and achieve fastening of the rotor core 1.

[0021] Furthermore, through holes 10 are provided on the first ring portion 6 and / or the second ring portion 7 , and a plurality of through holes 10 are distributed along the circumferential direction. The through holes 10 can increase the heat dissipation effect of the motor rotor.

[0022] Furthermore, when the motor is stationary, the second ring portion 7 is in the first position. At this time, the axial distance between the right end surface of the second ring portion 7 and the right end surface of the rotor core 1 is H. The axial distance between the right end surface of the winding right end portion 2 and the right end surface of the rotor core 1 is also H. The axial distance between the right end surface of the first ring portion 6 and the right end surface of the rotor core 1 is h, where h = (0.4-0.5) H, preferably 0.45. The present invention, through the selection of the material for the second ring portion 7 and the design of the axial distances H and h, can effectively ensure that the second ring portion 7 substantially conforms to the outer circumferential surface of the winding right end portion 2 as the motor speed increases / changes. This can thereby reduce the imbalance of the high-speed motor rotor while ensuring winding spin-off resistance and reducing motor vibration.

[0023] The present invention provides a high-speed motor rotor winding anti-swing device, which comprises a right-end anti-swing ring including a first ring portion and a second ring portion, wherein the first ring portion is made of a rigid metal material and the second ring portion is made of an elastic metal material. When the motor is between a stationary state and a maximum speed, the second ring portion basically fits in contact with the outer peripheral surface of the right end portion of the winding, thereby ensuring the anti-swing of the winding while reducing the imbalance of the high-speed motor rotor operation and reducing the vibration of the motor.

[0024] The above-mentioned embodiments are illustrative of the present invention, not limiting thereof. It is understood that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-speed motor rotor winding anti-swing device, comprising a rotor core (1), a winding right end portion (2), a winding left end portion (3), a right end anti-swing ring (4), and a left end anti-swing ring (5), wherein the outer circumference of the winding right end portion is provided with the right end anti-swing ring, and the outer circumference of the winding left end portion is provided with the left end anti-swing ring, and the right end anti-swing ring and the left end anti-swing ring have the same structure, and are characterized in that: The right end anti-swing ring (4) includes a first ring portion (6) and a second ring portion (7), wherein the first ring portion is made of a rigid metal material and the second ring portion is made of an elastic metal material. When the motor is stationary, the second ring portion is in a first position and is curved and fits the outer peripheral surface of the right end portion of the winding; when the motor is at the highest speed, the second ring portion is in a second position and is horizontal, and the horizontal shape is parallel to the rotation axis of the motor rotor; when the motor is between stationary and at the highest speed, the second ring portion fits the outer peripheral surface of the right end portion of the winding. The first ring portion (6) includes a step lower portion (8) and a step upper portion (9), wherein the step lower portion is arranged to fit the outer peripheral surface of the right-end anti-swing ring, and the step upper portion is arranged to fit the outer peripheral surface of the rotor core. The first ring portion and the second ring portion are welded together, and the right-end anti-swing ring and the left-end anti-swing ring are welded together; the connection strength between the anti-swing ring and the motor rotor is increased, and the rotor core is fastened.

2. A high-speed motor rotor winding anti-swing device according to claim 1, characterized in that: The first ring portion (6) and / or the second ring portion (7) are provided with through holes (10), with a plurality of through holes distributed along the circumference, and the through holes can increase the heat dissipation effect of the motor rotor.

3. A high-speed motor rotor winding anti-swing device as claimed in claim 2, characterized in that: When the motor is stationary, the second ring portion (7) is in the first position. At this time, the axial distance between the right end face of the second ring portion and the right end face of the rotor core (1) is H, the axial distance between the right end face of the winding right end portion (2) and the right end face of the rotor core is also H, and the axial distance between the right end face of the first ring portion (6) and the right end face of the rotor core is h, where h=(0.3-0.6)H.

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