Spliced stator

Abstract

The utility model discloses a spliced stator. The stator core comprises a plurality of fan-shaped stator core units, the two sides of each stator core unit are respectively provided with a tenon and a mortise, the adjacent stator core units are spliced into an annular stator core through concave-convex matching of the corresponding tenons and the corresponding mortises, splicing seams are formed in the adjacent stator core units, splicing grooves corresponding to the splicing seams are formed in the inner circumferential surface of the stator core, and the splicing grooves are matched with the tenons and the mortises. The stator core is provided with splicing holes between the tenons and the splicing grooves and between the mortises and the splicing grooves, and splicing seams between the splicing holes and the splicing grooves are used for welding. The thickness of the material at the splicing seam is reduced through the splicing holes, welding of the melting material is conveniently achieved, the heat input amount in the welding process is reduced, deformation and residual stress generated in the welding process are reduced, the welding quality and stability are improved, meanwhile, the welding speed can be increased, the width of a welding seam can be reduced, and the welding quality is improved. Welding efficiency is improved, and cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of traction machines, in particular to a spliced ​​stator of a traction machine. Background Art

[0002] Patent CN211377707U discloses a block assembly stator, in which adjacent block core units are spliced ​​to form welding grooves, and sharp protrusions are formed on the bottom surface of the welding grooves corresponding to the joints of adjacent block core units. The sharp protrusions increase the depth of the weld between adjacent block core units, and welding will produce more deformation and residual stress, and also increase welding efficiency and cost. Utility Model Content

[0003] The utility model aims to provide a spliced ​​stator with reduced splicing seam thickness.

[0004] The purpose of the utility model is achieved in this way.

[0005] A spliced ​​stator comprises a plurality of fan-shaped stator core units, tenons and tenons are respectively arranged on both sides of the stator core units, adjacent stator core units are spliced ​​into a circular stator core through the concave-convex cooperation of corresponding tenons and tenons, adjacent stator core units form a splicing seam, a splicing groove is arranged on the inner circumference of the stator core corresponding to the splicing seam, a splicing hole is arranged between the tenon and tenon groove and the splicing groove, and the splicing seam between the splicing hole and the splicing groove is used for welding.

[0006] The above technical solution can be further improved as follows.

[0007] Furthermore, the cross section of the splicing hole is any closed geometric shape.

[0008] Furthermore, the cross section of the splicing hole is elliptical, rhombus, circular, rectangular, etc.

[0009] Furthermore, the bottom surface of the splicing groove is a plane, and the splicing seam is located at the center of the bottom surface of the splicing groove.

[0010] Furthermore, the weld of the joint seam after welding is lower than the inner circumference of the stator core, and the weld does not affect the assembly of the stator core and the frame.

[0011] Furthermore, the width of the splicing groove is greater than the width of the welding pole used for welding. The weld does not protrude from the inner circumference of the stator core.

[0012] Furthermore, it also includes a machine base, a core fixing position is provided in the machine base, and a first keyway is provided in the stator core sleeve and the core fixing position, and at least one stator core unit of the stator core is provided with a first keyway in the axial direction, and a second keyway is provided in the axial direction on the outer periphery of the corresponding core fixing position, and the first keyway and the second keyway are aligned to realize the positioning and fixing in the circumferential direction through the limit key. The stator core and the machine base are easy to install.

[0013] Furthermore, the inner circumference of the stator core and the outer circumference of the core fixing position are transitional or interference fit, so as to ensure that the roundness and air gap of the stator after final assembly are uniform.

[0014] The utility model reduces the thickness of the material at the joint seam by means of the joint holes, facilitates the welding of molten materials, reduces the heat input during welding, thereby reducing the deformation and residual stress generated during welding, improves the quality and stability of welding, and at the same time, can increase the welding speed and reduce the width of the weld, improve welding efficiency and reduce costs. The bottom surface of the joint groove is a plane to further reduce the thickness of the material at the joint seam. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A three-dimensional diagram of the stator core and windings.

[0016] Figure 2 This is the front view of the stator core and winding.

[0017] Figure 3 for Figure 2 Enlarged view of part A in the middle.

[0018] Figure 4 A three-dimensional diagram of the stator core unit.

[0019] Figure 5 Another stereoscopic view of the stator core unit.

[0020] Figure 6 This is the front view of the stator core unit.

[0021] Figure 7 This is the installation diagram of the spliced ​​stator.

[0022] Figure 8 for Figure 7 main view. DETAILED DESCRIPTION

[0023] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0024] Example 1, see Figure 1-8 As shown, a spliced ​​stator includes several fan-shaped stator core units 2 and a base 3. Tenons 4 and tenons 5 are respectively provided on both sides of the stator core unit 2. Adjacent stator core units 2 are spliced ​​into a circular stator core 1 through the corresponding tenons 4 and tenons 5. Adjacent stator core units 2 are formed with splicing seams 6. The inner circumference of the stator core 1 is provided with splicing grooves 7 corresponding to the splicing seams 6. The stator core 1 is provided with splicing holes 8 between the tenons 4 and the tenons 5 and the splicing grooves 7. The splicing seams 6 between the splicing holes 8 and the splicing grooves 7 are used for welding. Among them, the tenon 4 is a dovetail tenon 4, and the tenon 5 is a dovetail tenon groove 5.

[0025] The cross section of the splicing hole 8 is any closed geometric shape, such as the cross section of the splicing hole 8 including but not limited to an ellipse, a rhombus, a circle, a rectangle, etc. In this embodiment, the cross section of the splicing hole 8 is an ellipse. Half grooves 80 are respectively provided on both sides of the stator core unit 2. When adjacent stator core units 2 are spliced, the openings of two adjacent half grooves 80 are aligned and closed to form the splicing hole 8.

[0026] The bottom surface of the splicing groove 7 is a plane, and the splicing seam 6 is located at the center of the bottom surface of the splicing groove 7. The weld of the splicing seam 6 after welding is lower than the inner circumference of the stator core 1. The width of the splicing groove 7 is greater than the width of the welding pole used for welding.

[0027] An iron core fixing position 31 is provided in the base 3. After the winding 9 is installed on the stator iron core 1, the stator iron core 1 is sleeved on the iron core fixing position 31, and the inner circumference of the stator iron core 1 and the outer circumference of the iron core fixing position 31 are transitional or interference fit. A stator iron core unit 2 of the stator iron core 1 is provided with a first keyway 20 along the axial direction, and a second keyway 30 is provided along the axial direction corresponding to the outer circumference of the iron core fixing position 31. The first keyway 20 and the second keyway 30 are aligned and positioned and fixed in the circumferential direction through the limit key 10.

[0028] In the utility model, the splicing holes 8 can effectively reduce the material thickness at the splicing seam 6 , which is beneficial to welding work and improves the production efficiency of the stator core 1 .

Claims

1. A spliced ​​stator, comprising a plurality of fan-shaped stator core units, with tenons and tenons respectively provided on both sides of the stator core units, adjacent stator core units are spliced ​​into a circular stator core through the corresponding tenons and tenons, adjacent stator core units are formed with a splicing seam, and the inner circumference of the stator core is provided with a splicing groove corresponding to the splicing seam, wherein: The stator core is provided with a splicing hole between the tenon and the tenon groove and the splicing groove, and the splicing seam between the splicing hole and the splicing groove is used for welding.

2. The spliced ​​stator according to claim 1, characterized in that: The cross section of the splicing hole is any closed geometric shape.

3. The spliced ​​stator according to claim 2, characterized in that: The cross section of the splicing hole is oval, rhombus, circular or rectangular.

4. The spliced ​​stator according to claim 1, characterized in that: The bottom surface of the splicing groove is a plane, and the splicing seam is located at the center of the bottom surface of the splicing groove.

5. The spliced ​​stator according to claim 1, characterized in that: The weld of the splicing seam after welding is lower than the inner circumference of the stator core.

6. The spliced ​​stator according to claim 1, characterized in that: The width of the splicing groove is greater than the width of the welding electrode used for welding.

7. The spliced ​​stator according to claim 1, characterized in that: It includes a machine base, in which an iron core fixing position is arranged inside the machine base, and on the stator core sleeve and the iron core fixing position, at least one stator core unit of the stator core is provided with a first keyway along the axial direction, and a second keyway is provided along the axial direction on the outer periphery of the corresponding iron core fixing position, and the first keyway and the second keyway are aligned to achieve positioning and fixing in the circumferential direction through a limit key.

8. The spliced ​​stator according to claim 7, characterized in that: The inner circumference of the stator core and the outer circumference of the core fixing position are transition or interference fit.

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