Rotor welding structure of double-skewed slot rotor induction motor

Abstract

The utility model relates to a rotor welding structure of a double-skewed slot rotor induction motor, which structurally comprises a left segmented cast-aluminum rotor and a right segmented cast-aluminum rotor which are axially connected with each other in a welding manner, and axial positioning bosses corresponding to each other in position are respectively arranged on the welding surfaces of the left segmented cast-aluminum rotor and the right segmented cast-aluminum rotor. And a middle silicon steel gasket is arranged between the left segmented cast-aluminum rotor and the right segmented cast-aluminum rotor. The utility model has the advantages that the structural design is simple and reasonable, the generation of rotor shrinkage cavities and thin strips after segmented aluminum casting can be obviously reduced, the rotor die-casting quality can be improved, the consistency of axial end surface gaps during welding is good, welding fluid filling can be facilitated, and the control accuracy in the length direction during integral welding can be improved.

Description

Technical Field

[0001] The utility model relates to a rotor welding structure, in particular to a rotor welding structure of a double-skewed slot rotor induction motor driven by variable frequency. Background Art

[0002] In the prior art, the double-skewed slot rotor has the problem of being difficult to die-cast, which easily produces shrinkage cavities and thin strips, resulting in insufficient filling of the rotor, resulting in reduced efficiency and increased temperature rise during motor operation.

[0003] The prior art also uses a die-casting method of segmented aluminum casting, but there is a problem that it is difficult to weld them into one piece, which also affects the quality of the motor. Utility Model Content

[0004] The utility model provides a rotor welding structure for a double-skewed slot rotor induction motor, which aims to overcome the above-mentioned deficiencies in the prior art, improve the welding effect of segmented cast aluminum, and enhance the quality of the rotor.

[0005] The technical solution of this utility model is a rotor welding structure for a dual-skewed-slot rotor induction motor. The structure comprises a left and right segmented cast aluminum rotor axially welded to each other. The weld surfaces of the left and right segmented cast aluminum rotors are each provided with corresponding axial positioning bosses. This improves the consistency of the axial end face gap when the cast aluminum rotor segments are cast and welded together.

[0006] Preferably, an intermediate silicon steel gasket is provided between the left segmented cast aluminum rotor and the right segmented cast aluminum rotor, which can further improve the consistency of the axial end face gap when the cast aluminum rotor is segmented and then welded into one piece.

[0007] The advantages of this utility model are: simple and reasonable structural design, the generation of rotor shrinkage holes and thin strips after segmented aluminum casting can be significantly reduced, the rotor die-casting quality can be improved, the axial end face gap consistency is good during welding, the welding liquid filling can be convenient, and the length direction control accuracy when welding into one piece is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 The utility model is a schematic structural diagram of the rotor welding structure of the double-skewed slot rotor induction motor.

[0009] Figure 2 yes Figure 1 Schematic diagram of the exploded structure from side view.

[0010] In the figure, 1 is the left segmented cast aluminum rotor, 2 is the positioning boss, 3 is the middle silicon steel gasket, and 4 is the right segmented cast aluminum rotor. DETAILED DESCRIPTION

[0011] The present invention will be further described in detail below with reference to the embodiments and specific implementation methods.

[0012] like Figure 1 、 2 As shown, a rotor welding structure of a double-skewed slot rotor induction motor includes a left segmented cast aluminum rotor 1 and a right segmented cast aluminum rotor 4 that are axially welded to each other. Axial positioning bosses 2 corresponding in position are respectively provided on the welding surfaces of the left segmented cast aluminum rotor 1 and the right segmented cast aluminum rotor 4. An intermediate silicon steel gasket 3 is also provided between the left segmented cast aluminum rotor 1 and the right segmented cast aluminum rotor 4.

[0013] According to the above structure, the addition of the axial positioning boss 2 on the welding end plane and the middle silicon steel gasket 4 during design helps to achieve consistency in the axial end face gaps when the cast aluminum rotor is segmented and then welded into one piece.

[0014] On the other hand, the segmented cast aluminum of the rotor can significantly reduce the generation of shrinkage cavities and thin strips in the cast aluminum rotor, thereby improving the die-casting quality of the rotor. The good consistency of the axial end face gap during welding can facilitate the filling of the welding liquid and improve the accuracy of the length direction control when welding into one piece.

[0015] After segmented aluminum casting, the generation of rotor shrinkage holes and thin strips can be significantly reduced, which can improve the die-casting quality of the double-skewed slot rotor. The axial end face gap consistency is good during welding, the welding liquid is easy to fill, and the length direction is accurately controlled when welded into one piece.

[0016] The components described above are all prior art, and those skilled in the art can use any model and existing design that can achieve their corresponding functions.

[0017] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the creative concept of the present invention, which all fall within the scope of protection of the present invention.

Claims

1. A rotor welding structure of a double-skewed slot rotor induction motor, characterized in that: The invention comprises a left segmented cast aluminum rotor (1) and a right segmented cast aluminum rotor (4) which are axially welded to each other, and axial positioning bosses (2) corresponding in position are respectively provided on the welding surfaces of the left segmented cast aluminum rotor (1) and the right segmented cast aluminum rotor (4).

2. The rotor welding structure of a double-skewed slot rotor induction motor according to claim 1, characterized in that: An intermediate silicon steel gasket (3) is provided between the left segmented cast aluminum rotor (1) and the right segmented cast aluminum rotor (4).

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