TW201909523A - High-speed asynchronous motor rotor structure and motor comprising same - Google Patents
High-speed asynchronous motor rotor structure and motor comprising same Download PDFInfo
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- TW201909523A TW201909523A TW107123895A TW107123895A TW201909523A TW 201909523 A TW201909523 A TW 201909523A TW 107123895 A TW107123895 A TW 107123895A TW 107123895 A TW107123895 A TW 107123895A TW 201909523 A TW201909523 A TW 201909523A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K17/00—Asynchronous induction motors; Asynchronous induction generators
- H02K17/02—Asynchronous induction motors
- H02K17/16—Asynchronous induction motors having rotors with internally short-circuited windings, e.g. cage rotors
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Abstract
Description
本發明關於電機技術領域,尤其關於一種高速非同步電機轉子結構和包含該轉子結構的電機。 The present invention relates to the field of motor technology, and more particularly to a high speed non-synchronous motor rotor structure and a motor including the same.
非同步電動機是由氣隙旋轉磁場與轉子繞組感應電流相互作用產生電磁轉矩,從而實現機電能量轉換為機械能量的一種交流電機。在現有的各類電機應用中,非同步電機需求量較大。目前,非同步電機的應用趨向於高速化和小型化,然而,在高速運轉時,非同步電機的導條和轉子端環受到離心力的作用,導條或端環容易出現斷裂失效的現象,嚴重時,斷裂的導條會飛出,刮傷定子、傷害定子絕緣,造成定子短路,從而使得電機燒毀損壞。 A non-synchronous motor is an AC motor that converts electromechanical energy into mechanical energy by an electromagnetic variable that interacts with the induced current of the rotor winding to generate electromagnetic torque. In the existing various types of motor applications, the demand for non-synchronous motors is large. At present, the application of non-synchronous motors tends to be high speed and miniaturization. However, at high speeds, the bars and rotor end rings of non-synchronous motors are subjected to centrifugal force, and the bars or end rings are prone to breakage failure. When the broken guide bar will fly out, the stator is scratched, the stator insulation is damaged, and the stator is short-circuited, so that the motor is burned and damaged.
出於安全的考慮,現有技術中,在轉子端環處增加護環結構,但是,此方案需要額外加工製造,增加了生產成本,且增加了電機的裝配時間。現有技術中,還包括在轉子鐵心和轉子端環之間設置一高強度鋼製轉子端環,但是,這種高強度鋼製轉子端環,通常厚度大於3mm,衝壓製造難度大,且精度難以保障,模具壽命短,此外,由於其屈服強度很高(通常大於600MPa),因此,衝壓的鋼製轉子端環的模具製造難度大,成本高,精度要求也非常高,對於生產廠商來說是很大 的挑戰,很難實現高強度鋼製轉子端環的批量生產。由此可知,在轉子鐵心和轉子端環之間設置一高強度鋼製轉子端環的技術方案,成本高,實用性差。 For safety reasons, in the prior art, a retaining ring structure is added at the rotor end ring. However, this solution requires additional processing and manufacturing, increases production costs, and increases the assembly time of the motor. In the prior art, a high-strength steel rotor end ring is disposed between the rotor core and the rotor end ring. However, the high-strength steel rotor end ring is usually thicker than 3 mm, which is difficult to manufacture and has difficulty in precision. Guarantee, mold life is short, in addition, because of its high yield strength (usually greater than 600MPa), the stamping of the steel rotor end ring mold manufacturing is difficult, high cost, precision requirements are also very high, for the manufacturer is A big challenge is that it is difficult to achieve mass production of high-strength steel rotor end rings. It can be seen that the technical solution of providing a high-strength steel rotor end ring between the rotor core and the rotor end ring has high cost and poor practicability.
本發明所要解決的技術問題在於,提供一種高速非同步電機轉子結構和包含該轉子結構的電機,在保證非同步電機電磁性能的同時提高了電機高速運行下的機械強度和安全可靠性,從而使得電機更適合於運行在高轉速下。 The technical problem to be solved by the present invention is to provide a high-speed non-synchronous motor rotor structure and a motor including the same, which can improve the mechanical strength and safety reliability of the motor under high-speed operation while ensuring the electromagnetic performance of the non-synchronous motor. The motor is more suitable for operation at high speeds.
本發明的另一目的在於,由兩種不同性能的矽鋼片材料,使電機的電磁性能和機械性能可以同時兼得。同時矽鋼片衝壓精度高、模具壽命長,更易實現規模化生產。 Another object of the present invention is to provide electromagnetic properties and mechanical properties of the motor at the same time by two different properties of the silicon steel sheet material. At the same time, the steel sheet has high stamping precision and long mold life, making it easier to achieve large-scale production.
為了解決上述技術問題,本發明提供了一種高速非同步電機轉子結構,其包括:轉子鐵心,其中心設置有軸向通孔;由高屈服強度矽鋼片製成的第一轉子端環,其緊貼所述轉子鐵心,設置在轉子鐵心兩端;第二轉子端環,其緊貼第一轉子端環端部設置;轉子導條,其設置在所述轉子鐵心、第一轉子端環、第二轉子端環的外周;以及轉軸,其設置在所述軸向通孔中。 In order to solve the above technical problem, the present invention provides a high speed non-synchronous motor rotor structure, comprising: a rotor core, the center of which is provided with an axial through hole; and a first rotor end ring made of a high yield strength silicon steel sheet, which is tight The rotor core is disposed at two ends of the rotor core; the second rotor end ring is disposed adjacent to the end of the first rotor end ring; the rotor bar is disposed at the rotor core, the first rotor end ring, and An outer circumference of the rotor end ring; and a rotating shaft disposed in the axial through hole.
進一步的,所述轉軸與所述轉子鐵心以過盈配合的方式相結合。 Further, the rotating shaft is combined with the rotor core in an interference fit manner.
進一步的,所述轉軸沿軸向設置有凸起的軸肩, 所述軸肩與第一轉子端環相接觸。 Further, the rotating shaft is axially provided with a convex shoulder, and the shoulder is in contact with the first rotor end ring.
進一步的,所述轉子鐵心、第一轉子端環和第二轉子端環的外周沿周向設置有用於安裝轉子導條的導條孔,所述轉子導條***所述導條孔。 Further, the outer circumferences of the rotor core, the first rotor end ring and the second rotor end ring are circumferentially provided with a guide hole for mounting the rotor bar, and the rotor bar is inserted into the bar hole.
進一步的,所述導條孔沿所述轉子鐵心、第一轉子端環和第二轉子端環的周向均勻分佈。 Further, the guide bar holes are evenly distributed along the circumferential direction of the rotor core, the first rotor end ring and the second rotor end ring.
進一步的,所述轉子鐵心由多片高導磁性矽鋼片衝壓後疊壓而成。 Further, the rotor core is formed by laminating a plurality of high-conductivity silicon steel sheets.
進一步的,所述第一轉子端環由多片高屈服強度矽鋼片衝壓後疊壓而成。 Further, the first rotor end ring is formed by laminating a plurality of high yield strength silicon steel sheets.
進一步的,所述高導磁性矽鋼片的屈服強度範圍為330MP-400MP,所述高屈服強度矽鋼片的屈服強度高於600MP。 Further, the high permeability magnetic silicon steel sheet has a yield strength ranging from 330 MP to 400 MP, and the high yield strength silicon steel sheet has a yield strength higher than 600 MP.
進一步的,所述高導磁性矽鋼片的厚度為0.2mm~0.5mm,所述高屈服強度矽鋼片厚度為0.5mm~1mm。 Further, the high magnetic conductive silicon steel sheet has a thickness of 0.2 mm to 0.5 mm, and the high yield strength silicon steel sheet has a thickness of 0.5 mm to 1 mm.
進一步的,所述轉子導條和所述第二轉子端環由高導電率的無氧銅或銅合金製成。 Further, the rotor bar and the second rotor end ring are made of a high conductivity oxygen-free copper or copper alloy.
進一步的,所述轉子導條和所述第二轉子端環固接在一起。 Further, the rotor bar and the second rotor end ring are fixed together.
進一步的,所述轉子導條和所述第二轉子端環採用焊接的方式固接在一起。 Further, the rotor bar and the second rotor end ring are fixed together by welding.
根據本發明的另一方面,提供了一種非同步電機,包括所述轉子結構。 According to another aspect of the invention, a non-synchronous electric machine is provided comprising the rotor structure.
本發明與現有技術相比具有明顯的優點和有益效 果。借由上述技術方案,本發明一種高速非同步電機轉子結構和包含該轉子結構的電機可達到相當的技術進步性及實用性,並具有產業上的廣泛利用價值,其至少具有下列優點: The present invention has significant advantages and benefits over the prior art. According to the above technical solution, the rotor structure of the high-speed non-synchronous motor and the motor including the rotor structure of the invention can achieve considerable technical progress and practicability, and have extensive industrial use value, and at least have the following advantages:
1、轉子鐵心由高磁導性矽鋼片製成,保證了電機的高電磁性能。 1. The rotor core is made of high magnetic permeability silicon steel sheet to ensure the high electromagnetic performance of the motor.
2、轉子鐵心兩端的第一轉子端環由高屈服度的矽鋼片製成,提高了轉子結構的機械強度,使轉子結構耐離心力變大,從而提高電機運行轉速。 2. The first rotor end ring at both ends of the rotor core is made of high-yield silicon steel sheet, which improves the mechanical strength of the rotor structure and makes the rotor structure resistant to centrifugal force, thereby increasing the running speed of the motor.
3、轉子鐵心由高磁導性矽鋼片製成,轉子鐵心兩端的第一轉子端環由高屈服度的矽鋼片製成,兩種矽鋼片材料的結合,共同實現電機的電磁性能和機械性能的相互相容,使電機在保證電磁性能和機械性能的前提下,提高電機的最高轉速。 3. The rotor core is made of high magnetic permeability silicon steel sheet. The first rotor end ring at both ends of the rotor core is made of high-yield silicon steel sheet. The combination of two kinds of silicon steel sheet materials can realize the electromagnetic and mechanical properties of the motor. The mutual compatibility makes the motor increase the maximum speed of the motor under the premise of ensuring electromagnetic performance and mechanical performance.
4、同時矽鋼片衝壓精度高、模具壽命長,更易實現規模化生產。 4. At the same time, the steel sheet has high stamping precision and long mold life, which makes it easier to achieve large-scale production.
5、本發明使非同步電機在保證電磁性能前提下,大幅提高轉子的機械強度,進而提高電機的最高轉速,更有利於實現電機設計的高速化和小型化。 5. The invention makes the non-synchronous motor greatly improve the mechanical strength of the rotor under the premise of ensuring electromagnetic performance, thereby increasing the maximum rotational speed of the motor, and is more advantageous for realizing high speed and miniaturization of the motor design.
上述說明僅是本發明技術方案的概述,為了能夠更清楚瞭解本發明的技術手段,而可依照說明書的內容予以實施,並且為了讓本發明的上述和其他目的、特徵和優點能夠更明顯易懂,以下特舉較佳實施例,並配合附圖,詳細說明如下。 The above description is only an overview of the technical solutions of the present invention, and the above-described and other objects, features and advantages of the present invention can be more clearly understood. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments will be described in detail with reference to the accompanying drawings.
1‧‧‧轉子鐵心 1‧‧‧Rotor core
2‧‧‧轉子導條 2‧‧‧Rotor bars
3‧‧‧第一轉子端環 3‧‧‧First rotor end ring
4‧‧‧第二轉子端環 4‧‧‧Second rotor end ring
5‧‧‧轉軸 5‧‧‧ shaft
6‧‧‧軸肩 6‧‧‧ Shoulder
31‧‧‧第一轉子左端環 31‧‧‧First rotor left end ring
32‧‧‧第一轉子右端環 32‧‧‧First rotor right end ring
41‧‧‧第二轉子左端環 41‧‧‧Second rotor left end ring
42‧‧‧第二轉子右端環 42‧‧‧Second rotor right end ring
圖1為本發明一實施例提供的高速非同步電機轉子結構截面示意圖。 1 is a schematic cross-sectional view showing a structure of a rotor of a high-speed asynchronous motor according to an embodiment of the present invention.
圖2為本發明圖1A-A截面示意圖。 Figure 2 is a schematic cross-sectional view of Figure 1A-A of the present invention.
為更進一步闡述本發明為達成預定發明目的所採取的技術手段及功效,以下結合附圖及較佳實施例,對依據本發明提出的一種高速非同步電機轉子結構和包含該轉子結構的電機的具體實施方式及其功效,詳細說明如後。 In order to further illustrate the technical means and efficacy of the present invention for achieving the intended purpose of the invention, a high speed non-synchronous motor rotor structure and a motor including the rotor structure according to the present invention will be described below with reference to the accompanying drawings and preferred embodiments. The specific embodiment and its efficacy are described in detail later.
現有的非同步電機轉子在工作過程中,轉子導條和轉子端環(此處轉子端環對應本發明中的第二轉子端環4)受到離心力的作用,在高轉速下容易斷裂,本發明提出一種高速非同步電機轉子結構,如圖1和圖2所示,所述轉子結構包括:轉子鐵心1,轉子導條2,第一轉子端環3、第二轉子端環4和轉軸5,其中,所述轉子鐵心1中心設置有軸向通孔,所述轉軸5設置在所述軸向通孔中;由高屈服強度矽鋼片製成的第一轉子端環3,其緊貼轉子鐵心1,設置在轉子鐵心1兩端,作為示例,所述第一轉子端環3與轉子鐵心1鉚接;所述第二轉子端環4緊貼第一轉子端環3,設置在第一轉子端環3的端部;所述轉子導條2設置在所述轉子鐵心1、第一轉子端環3和第二轉子端環4的外周。高屈服強度矽鋼片製成的第一轉子端環3的設置,大幅提高了非同步電機轉子的抗離心能力,提高了非同步電機的轉速,且保證了非同步電機高速運行下的機械強度和安全可靠性。 In the existing non-synchronous motor rotor, the rotor bar and the rotor end ring (where the rotor end ring corresponds to the second rotor end ring 4 in the present invention) are subjected to centrifugal force and are easily broken at high rotation speed, and the present invention A high speed non-synchronous motor rotor structure is proposed. As shown in FIGS. 1 and 2, the rotor structure includes: a rotor core 1, a rotor bar 2, a first rotor end ring 3, a second rotor end ring 4, and a rotating shaft 5, Wherein, the rotor core 1 is centrally provided with an axial through hole, the rotating shaft 5 is disposed in the axial through hole; the first rotor end ring 3 made of a high yield strength silicon steel sheet is closely attached to the rotor core 1, disposed at both ends of the rotor core 1, as an example, the first rotor end ring 3 is riveted to the rotor core 1; the second rotor end ring 4 is in close contact with the first rotor end ring 3, disposed at the first rotor end An end of the ring 3; the rotor bar 2 is disposed on an outer circumference of the rotor core 1, the first rotor end ring 3, and the second rotor end ring 4. The setting of the first rotor end ring 3 made of high yield strength silicon steel sheet greatly improves the anti-centrifugal capability of the non-synchronous motor rotor, improves the rotational speed of the non-synchronous motor, and ensures the mechanical strength of the non-synchronous motor under high-speed operation. Safety and reliability.
在所述轉子鐵心1、第一轉子端環3和第二轉子端環4三者的外周,沿周向設置有用於安裝轉子導條2的導條孔。如本發明圖2所示,在本例中示例性地設置有多個導條孔且相應地具有多個轉子導條2。在本文的闡述中,導條孔貫穿轉子鐵心1、第一轉子端環3和第二轉子端環4,且是設置在所述轉子鐵心1、第一轉子端環3和第二轉子端環4的外周,如此,在轉子導條2***導條孔之後,轉子導條2相應地位於所述轉子鐵心1、第一轉子端環3和第二轉子端環4的外周。特別說明的是,在所述轉子鐵心1、第一轉子端環3和第二轉子端環4三者的外周,沿周向設置導條孔,並不是說導條孔設置在該三者的外側從而使得轉子導條2***導條孔時,轉子鐵心1、第一轉子端環3和第二轉子端環4被包裹在其中,而是:導條孔是穿過轉子鐵心1、第一轉子端環3和第二轉子端環4且是在它們三者的內部且靠近它們三者的外側(該外側是相對於轉子鐵心1位於軸向通孔的那一側而言),而非導條孔位於它們的外側。較佳者,導條孔在轉子鐵心1、第一轉子端環3和第二轉子端環4的外周均勻分佈,相應地,若干轉子導條2沿轉子鐵心1、第一轉子端環3和第二轉子端環4的外周均勻分佈。 On the outer circumferences of the rotor core 1, the first rotor end ring 3, and the second rotor end ring 4, guide bars for mounting the rotor bars 2 are provided in the circumferential direction. As shown in Fig. 2 of the present invention, a plurality of bar holes are exemplarily provided in this example and correspondingly have a plurality of rotor bars 2. In the description herein, the guide bar holes penetrate the rotor core 1, the first rotor end ring 3 and the second rotor end ring 4, and are disposed at the rotor core 1, the first rotor end ring 3 and the second rotor end ring The outer circumference of 4, as such, after the rotor bars 2 are inserted into the guide bars, the rotor bars 2 are correspondingly located on the outer circumferences of the rotor core 1, the first rotor end ring 3 and the second rotor end ring 4. Specifically, in the outer circumferences of the rotor core 1, the first rotor end ring 3, and the second rotor end ring 4, a guide hole is provided along the circumferential direction, not to say that the guide hole is provided in the three When the outer side is such that the rotor bar 2 is inserted into the bar hole, the rotor core 1, the first rotor end ring 3 and the second rotor end ring 4 are wrapped therein, but: the bar hole is passed through the rotor core 1, first The rotor end ring 3 and the second rotor end ring 4 are in the interior of the three and close to the outside of the three (the outer side is relative to the side of the rotor core 1 located in the axial through hole), The bar holes are located on the outside of them. Preferably, the guide bar holes are evenly distributed on the outer circumferences of the rotor core 1, the first rotor end ring 3 and the second rotor end ring 4, and accordingly, a plurality of rotor bars 2 are along the rotor core 1, the first rotor end ring 3, and The outer circumference of the second rotor end ring 4 is evenly distributed.
在本發明的示例中,轉軸5以過盈配合方式與轉子鐵心1相結合,設置在所述軸向通孔中,過盈量透過具體的配合和應力計算確定,不同規格的產品有不同的數值。所述轉軸5沿軸向的一側設置有凸起的軸肩6,所述軸肩6與設置軸肩6對應一側的第一轉子左端環31相接觸。 In the example of the present invention, the rotating shaft 5 is combined with the rotor core 1 in an interference fit manner, and is disposed in the axial through hole. The interference is determined by specific fitting and stress calculation, and different products have different specifications. Value. The shaft 5 is provided with a convex shoulder 6 on one side in the axial direction, and the shoulder 6 is in contact with the first rotor left end ring 31 on the side corresponding to the shoulder 6.
轉子鐵心1由多片高導磁性矽鋼片衝壓後疊壓而 成,高導磁性矽鋼片為常規的矽鋼片,例如M235-35的矽鋼片,常規矽鋼片的屈服強度範圍為330MP-400MP,轉子鐵心1採用多片高導磁性矽鋼片保證了電機的電磁性能。轉子鐵心1的製作工藝並不限於此,其他可以將矽鋼片製成符合要求的轉子鐵心1的方法適於此。所述高導磁性矽鋼片的厚度較佳者為0.2mm~0.5mm,所需高導磁性矽鋼片的片數根據轉子鐵心沿轉子鐵心軸向的長度以及高導磁性矽鋼片的厚度來確定。 The rotor core 1 is formed by laminating a plurality of high-conductivity silicon steel sheets, and the high-magnetic magnetic steel sheet is a conventional silicon steel sheet, such as a silicon steel sheet of M235-35. The yield strength of the conventional silicon steel sheet is 330MP-400MP, and the rotor The core 1 uses a plurality of high-conductivity silicon steel sheets to ensure the electromagnetic performance of the motor. The manufacturing process of the rotor core 1 is not limited thereto, and other methods of forming the silicon steel sheet into the desired rotor core 1 are suitable for this. The thickness of the high magnetic conductive silicon steel sheet is preferably 0.2 mm to 0.5 mm, and the number of required high magnetic conductive silicon steel sheets is determined according to the length of the rotor core along the axial direction of the rotor core and the thickness of the high magnetic conductive silicon steel sheet.
所述第一轉子端環3包括第一轉子左端環31和第一轉子右端環32,第一轉子左端環31緊貼轉子鐵心1設置在轉子鐵心1的左端,第一轉子右端環32緊貼轉子鐵心1設置在轉子鐵心1的右端。所述第一轉子端環3由多片高屈服強度矽鋼片衝壓後疊壓而成,提高了轉子結構的機械強度,使轉子結構耐離心力變大,從而提高電機運行轉速。第一轉子端環3的製作工藝並不限於此,其他可以將矽鋼片製成符合要求的第一轉子端環3的方法適於此。所述高屈服強度矽鋼片的厚度較佳者為0.5mm~1mm,所需高屈服強度矽鋼片的片數根據第一轉子端環沿轉子鐵心軸向的長度以及高屈服強度矽鋼片的厚度來確定,第一轉子端環3的長度較佳者為3mm~6mm。高屈服強度的矽鋼片,相較於厚度大於3mm的高屈服強度不銹鋼板更易獲得,而且,由於第一轉子端環3的厚度通常在3mm以上,若由高屈服強度不銹鋼板材料製作,衝壓製造困難,精度難以保證的,模具壽命非常短;而高屈服強度的矽鋼片厚度較薄,通常在0.5~1mm之間,非常容易透過模具實現衝壓製成,製造簡單方便,大大節約了生產成本。 The first rotor end ring 3 includes a first rotor left end ring 31 and a first rotor right end ring 32. The first rotor left end ring 31 is disposed close to the rotor core 1 at the left end of the rotor core 1, and the first rotor right end ring 32 is closely attached. The rotor core 1 is disposed at the right end of the rotor core 1. The first rotor end ring 3 is formed by laminating a plurality of high yield strength silicon steel sheets, which improves the mechanical strength of the rotor structure, and the centrifugal structure of the rotor structure is increased, thereby improving the running speed of the motor. The manufacturing process of the first rotor end ring 3 is not limited thereto, and other methods of forming the silicon steel sheet into the desired first rotor end ring 3 are suitable for this. The thickness of the high yield strength silicon steel sheet is preferably 0.5 mm to 1 mm, and the number of required high yield strength silicon steel sheets is based on the length of the first rotor end ring along the axial direction of the rotor core and the thickness of the high yield strength steel sheet. It is determined that the length of the first rotor end ring 3 is preferably from 3 mm to 6 mm. A high yield strength niobium steel sheet is more easily obtained than a high yield strength stainless steel sheet having a thickness greater than 3 mm, and since the thickness of the first rotor end ring 3 is usually 3 mm or more, if it is made of a high yield strength stainless steel sheet material, stamping is performed. Difficult, the accuracy is difficult to guarantee, the die life is very short; and the high yield strength of the silicon steel sheet is thin, usually between 0.5~1mm, very easy to punch through the mold, easy to manufacture, greatly saving production costs.
所述第二轉子端環4包括第二轉子左端環41和第二轉子右端環42,所述第二轉子左端環41緊貼第一轉子左端環31設置在第一轉子左端環31左端(以圖1為參考),所述第二轉子右端環42緊貼第一轉子右端環32設置在第一轉子右端環32的右端(以圖1為參考)。 The second rotor end ring 4 includes a second rotor left end ring 41 and a second rotor right end ring 42, the second rotor left end ring 41 abutting the first rotor left end ring 31 disposed at the left end of the first rotor left end ring 31 ( 1 is a reference), the second rotor right end ring 42 is disposed against the first rotor right end ring 32 at the right end of the first rotor right end ring 32 (referenced to FIG. 1).
較佳者,所述轉子導條2和所述第二轉子端環4由高導電率的無氧銅或銅合金製成,所述轉子導條2和所述第二轉子端環4固接在一起。較佳者,轉子導條2和所述第二轉子端環4可以採用焊接的方式固接在一起,所述轉子導條2和所述第二轉子端環4所用的材料並不限於此,例如,第二轉子端環4可用鋁材料製成。 Preferably, the rotor bar 2 and the second rotor end ring 4 are made of a high conductivity oxygen-free copper or copper alloy, and the rotor bar 2 and the second rotor end ring 4 are fixed. Together. Preferably, the rotor bar 2 and the second rotor end ring 4 may be fixed together by welding, and the materials used for the rotor bar 2 and the second rotor end ring 4 are not limited thereto. For example, the second rotor end ring 4 can be made of an aluminum material.
本發明還提供了一種非同步電機,包括所述轉子結構,轉子鐵心1由高磁導性矽鋼片製成,保證了電機的電磁性能。轉子鐵心1兩端的第一轉子端環3由高屈服度的矽鋼片製成,提高了轉子結構的機械強度,使轉子結構耐離心力變大,從而提高電機運行轉速。轉子鐵心1由高磁導性矽鋼片製成,轉子鐵心1兩端的第一轉子端環3由高屈服度的矽鋼片製成,兩種不同性能的矽鋼片材料的結合,共同實現電機的電磁性能和機械性能的相互相容,使電機在保證電磁性能和機械性能的前提下,提高電機的最高轉速。其中,矽鋼片易獲取,且易透過模具實現衝壓製造,方法簡單,成本低。本發明使非同步電機在保證電磁性能前提下,大幅提高轉子的機械強度,進而提高電機的最高轉速,更有利於實現電機設計的高速化和小型化。 The present invention also provides a non-synchronous motor comprising the rotor structure, the rotor core 1 being made of a high-permeability silicon steel sheet, which ensures the electromagnetic performance of the motor. The first rotor end ring 3 at both ends of the rotor core 1 is made of a high-yield silicon steel sheet, which improves the mechanical strength of the rotor structure and makes the rotor structure resistant to centrifugal force, thereby increasing the running speed of the motor. The rotor core 1 is made of a high-permeability silicon steel sheet, and the first rotor end ring 3 at both ends of the rotor core 1 is made of a high-yield silicon steel sheet, and the combination of two different properties of the silicon steel sheet material realizes the electromagnetic of the motor together. The compatibility of performance and mechanical properties makes the motor increase the maximum speed of the motor under the premise of ensuring electromagnetic performance and mechanical performance. Among them, the silicon steel sheet is easy to obtain, and it is easy to realize stamping manufacturing through a mold, and the method is simple and the cost is low. The invention makes the non-synchronous motor greatly improve the mechanical strength of the rotor under the premise of ensuring electromagnetic performance, thereby improving the maximum rotational speed of the motor, and is more advantageous for realizing high speed and miniaturization of the motor design.
以上所述,僅是本發明的較佳實施例而已,並非 對本發明作任何形式上的限制,雖然本發明已以較佳實施例揭露如上,然而並非用以限定本發明,任何熟悉本專業的技術人員,在不脫離本發明技術方案範圍內,當可利用上述揭示的技術內容作出些許更動或修飾為等同變化的等效實施例,但凡是未脫離本發明技術方案的內容,依據本發明的技術實質對以上實施例所作的任何簡單修改、等同變化與修飾,均仍屬於本發明技術方案的範圍內。 The above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Although the present invention has been disclosed in the above preferred embodiments, it is not intended to limit the present invention. A person skilled in the art can make some modifications or modifications to equivalent embodiments by using the above-disclosed technical contents without departing from the technical scope of the present invention. It is still within the scope of the technical solution of the present invention to make any simple modifications, equivalent changes and modifications to the above embodiments.
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