Skewed slot rotor core structure

Abstract

The utility model relates to the technical field of motors, and discloses a skewed slot rotor core structure, which comprises a casing, an upper limiting plate arranged on the inner side of the casing, a lower limiting plate arranged on the inner side of the casing, a protective cover arranged on the inner side of the casing, and a fixing groove arranged inside the protective cover. A fixing groove is formed in the top of each upper limiting plate, a fixing groove is formed in the top of each lower limiting plate, a fixing bolt is in threaded connection with the interior of each fixing groove, a reinforcing bolt is in threaded connection with the exterior of the machine shell, and a reinforcing bolt is in threaded connection with the exterior of each upper limiting plate; the outer portions of the lower limiting plates are in threaded connection with reinforcing bolts, and the inner portions of the upper limiting plates are fixedly connected with bearings. According to the utility model, through the arrangement of the reinforcing ring, the skewed slot iron core group is firmer in use, and through the arrangement of the rotating seat, the magnetic steel groups are more convenient to assemble and easy to assemble and disassemble.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a skewed slot rotor core structure. Background Art

[0002] In order to reduce tooth harmonics, harmonic torque and vibration noise, the rotor core is often made into a skewed slot structure, that is, the silicon steel sheets are twisted and stacked to make the rotor as a whole twisted at an angle. This structure is called skewed pole or skewed slot. The skewed pole or skewed slot makes the tooth harmonics of the windings different in phase, offsetting a part and thus weakening the tooth harmonics.

[0003] A Chinese patent with the search announcement number CN218216849U discloses a skewed slot rotor core structure, including a motor shaft, two rotor pressure plates penetrating the motor shaft, and at least two magnetic steel groups penetrating the motor shaft and located between the two rotor pressure plates, the motor shaft includes an A end and a B end, and multiple groups of magnetic steel groups are deflected by a certain angle from close to the A end to close to the B end, and the deflection angles of multiple groups of magnetic steel groups increase from close to the A end to close to the B end. Although this patented technology can reduce the effect of the electrical performance of the rotor core as much as possible on the basis of reducing production costs, it has poor limiting and fixing effects on the core, thereby reducing the stability of the core and affecting the use effect. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a skewed slot rotor core structure, aiming to improve the problem in the prior art that the limiting and fixing effects of the core are poor, thereby reducing the stability of the core and affecting the use effect.

[0005] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a skewed slot rotor core structure, comprising a casing, an upper limit plate is provided on the inner side of the casing, a lower limit plate is provided on the inner side of the casing, a protective cover is provided on the inner side of the casing, a fixing groove is provided inside the protective cover, a fixing groove is provided on the top of the upper limit plate, a fixing groove is provided on the top of the lower limit plate, the inner threads of the fixing groove are connected with fixing bolts, the outer threads of the casing are connected with reinforcing bolts, the outer threads of the upper limit plate are connected with reinforcing bolts, the outer threads of the lower limit plate are connected with reinforcing bolts, the inner part of the upper limit plate is fixedly connected with a bearing, the inner side of the bearing is fixedly connected with a rotating shaft, the inner part of the lower limit plate is rotatably connected with a rotating shaft, and the outer part of the rotating shaft is fixedly connected with a reinforcement component.

[0006] Furthermore, the reinforcement assembly includes reinforcement rings, which are slidably connected to the outside of the rotating shaft, and the outside of the reinforcement rings are provided with pillars, the inside of the pillars are threadedly connected with limiting bolts, and the inside of the reinforcement rings are threadedly connected with limiting bolts.

[0007] Furthermore, the pillar is arranged inside the slot, and an inclined slot core group is arranged outside the pillar, and the inclined slot core group is provided with a slot inside.

[0008] Furthermore, a magnetic steel group is arranged inside the skew slot core group, and a rotating seat is fixedly connected to the bottom of the magnetic steel group.

[0009] Furthermore, a mounting groove is provided inside the rotating seat, a clamping arm is rotatably connected inside the rotating seat, and a clamping wheel is rotatably connected at the bottom of the clamping arm.

[0010] Furthermore, springs are fixedly connected to both sides of the rotating seat, and clamping arms are fixedly connected to the adjacent ends of the springs.

[0011] Furthermore, the top of each magnetic steel group is provided with a limiting groove, and the inside of each limiting groove is fixedly connected with a limiting block.

[0012] The utility model has the following beneficial effects:

[0013] 1. In the utility model, the protection cover, the upper limit plate, the lower limit plate, the fixing bolts, the fixing grooves, the reinforcing bolts, the reinforcing rings, the pillars, the slots, the limit bolts and other structures are coordinated to improve the limiting and fixing effect of the skewed slot core group, so that the skewed slot core group can achieve a more reliable effect when in use.

[0014] 2. In the utility model, the magnetic steel group is fixed by the cooperation among the magnetic steel group, the rotating seat, the clamping arm, the spring, the clamping wheel, the limit block, the limit groove, the installation groove and other structures, thereby improving the stability of the skewed slot core group, and the assembly is convenient and easy to install and disassemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A three-dimensional diagram of a skewed slot rotor core structure proposed by the utility model;

[0016] Figure 2 A partial structural cross-sectional view of a skewed slot rotor core structure proposed by the utility model;

[0017] Figure 3 It is a partial structural schematic diagram of a skewed slot rotor core structure proposed by the utility model;

[0018] Figure 4 A partial structural connection diagram of a skewed slot rotor core structure proposed by the utility model;

[0019] Figure 5 for Figure 2 Enlarged view of point A in the middle.

[0020] Legend:

[0021] 1. Casing; 2. Protective cover; 3. Chute core assembly; 4. Upper limit plate; 5. Lower limit plate; 6. Rotating shaft; 7. Bearing; 8. Fixing bolt; 9. Fixing groove; 10. Reinforcement bolt; 11. Reinforcement ring; 12. Pillar; 13. Slot; 14. Limit bolt; 15. Magnetic steel assembly; 16. Rotating seat; 17. Clamping arm; 18. Spring; 19. Clamping wheel; 20. Limit block; 21. Limit groove; 22. Mounting groove. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Reference Figure 1 , Figure 2 and Figure 5 The utility model provides an embodiment: a skewed slot rotor core structure, including a casing 1, an upper limit plate 4 is arranged on the inner side of the casing 1, a lower limit plate 5 is arranged on the inner side of the casing 1, a protective cover 2 is arranged on the inner side of the casing 1, a fixing groove 9 is opened inside the protective cover 2, a fixing groove 9 is opened on the top of the upper limit plate 4, a fixing groove 9 is opened on the top of the lower limit plate 5, a fixing bolt 8 is threadedly connected to the inner side of the fixing groove 9, a reinforcing bolt 10 is threadedly connected to the outer side of the casing 1, and a reinforcing bolt 10 is threadedly connected to the outer side of the upper limit plate 4 Bolt 10, the outside of the lower limit plate 5 is threadedly connected with a reinforcing bolt 10, the inside of the upper limit plate 4 is fixedly connected with a bearing 7, the inner side of the bearing 7 is fixedly connected with a rotating shaft 6, the inside of the lower limit plate 5 is rotatably connected with the rotating shaft 6, the outside of the rotating shaft 6 is fixedly connected with a reinforcing component, the reinforcing component includes a reinforcing ring 11, the reinforcing ring 11 is slidably connected to the outside of the rotating shaft 6, the outside of the reinforcing ring 11 is provided with a pillar 12, the inside of the pillar 12 is threadedly connected with a limiting bolt 14, and the inside of the reinforcing ring 11 is threadedly connected with the limiting bolt 14.

[0024] The protective cover 2 is fixed in the casing 1, and the upper limit plate 4 and the lower limit plate 5 are arranged on the upper side and the lower side of the casing 1. The upper limit plate 4 and the lower limit plate 5 are fixed to the upper end and the lower end of the protective cover 2 by the reinforcing bolts 10 and the fixing bolts 8, and the reinforcing bolts 10 are inserted into the outside of the casing 1, so as to improve the limiting and fixing effect of the skewed slot core group 3. A slot 13 is opened inside the skewed slot core group 3, and the support 12 is fixed to the outer surface of the reinforcement ring 11 by the limiting bolts 14.

[0025] Reference Figure 3 , Figure 4 and Figure 5 The pillar 12 is arranged inside the slot 13, and a skewed slot core group 3 is arranged outside the pillar 12. The slots 13 are opened inside the skewed slot core group 3, and a magnetic steel group 15 is arranged inside the skewed slot core group 3. The bottom of the magnetic steel group 15 is fixedly connected with a rotating seat 16, and the interior of the rotating seat 16 is provided with a mounting groove 22. The interior of the rotating seat 16 is rotatably connected with a clamping arm 17, and the bottom of the clamping arm 17 is rotatably connected with a clamping wheel 19.

[0026] The support 12 and the slot 13 are clamped together, so that the rotating shaft 6 and the inclined slot core group 3 are easy to install and connect. When the clamping arm 17 moves to both sides, the spring 18 presses the clamping arm 17, so that the clamping wheel 19 clamps the limit block 20, thereby achieving the fixation between the magnetic steel groups 15. The rotating seat 16 is used to install the clamping arm 17 and the spring 18, and the installation slot 22 is used for the clamping arm 17 to expand the range of motion.

[0027] Reference Figure 3 and Figure 4 Springs 18 are fixedly connected to both sides of the rotating seat 16, and the ends of the springs 18 that are close to each other are fixedly connected to clamping arms 17. Limiting grooves 21 are provided on the tops of the magnetic steel groups 15, and limiting blocks 20 are fixedly connected to the insides of the limiting grooves 21.

[0028] The spring 18 plays a role of compression and reset, the limiting groove 21 is used to limit the rotating seat 16, the limiting block 20 is inserted between the two clamping wheels 19, and then the clamping wheels 19 are clamped into the arc groove, thereby fixing the two sets of magnetic steel groups 15.

[0029] Working principle: When using the device, align the rotating seat 16 at the bottom of the magnetic steel group 15 with the limiting groove 21 at the top of the magnetic steel group 15 to be connected, insert it between the two clamping wheels 19 through the limiting block 20, and then clamp the clamping wheel 19 into the arc groove, and the spring 18 presses the clamping arm 17, so that the clamping wheel 19 clamps the limiting block 20, thereby achieving the fixation between the magnetic steel groups 15. After completing the installation of the skewed slot core group 3, the skewed slot core group 3 is sleeved on the rotating shaft 6, and the skewed slot core group 3 is placed in the protective cover 2, the protective cover 2 is fixed in the casing 1, and the upper limit plate 4 and the lower limit plate 5 are set on the upper side and the lower side of the inside of the casing 1 The upper limit plate 4 and the lower limit plate 5 are fixed to the upper and lower ends of the protective cover 2 by the reinforcing bolts 10 and the fixing bolts 8, and the reinforcing bolts 10 are inserted into the outside of the casing 1, thereby improving the limiting and fixing effect of the skew core group 3, so that the skew core group 3 can achieve a more reliable effect when in use. A card slot 13 is opened inside the skew core group 3, and the support 12 is fixed to the outer surface of the reinforcing ring 11 by the limiting bolts 14, and the support 12 and the card slot 13 are clamped, so that the rotating shaft 6 and the skew core group 3 are easy to install and connect. By removing the reinforcement ring 11, the rotating shaft 6 and the skew core group 3 are easy to separate, so that the cost is reduced during replacement.

[0030] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A skewed slot rotor core structure, comprising a housing (1), characterized in that: An upper limit plate (4) is arranged on the inner side of the casing (1), a lower limit plate (5) is arranged on the inner side of the casing (1), a protective cover (2) is arranged on the inner side of the casing (1), a fixing groove (9) is provided inside the protective cover (2), a fixing groove (9) is provided on the top of the upper limit plate (4), a fixing groove (9) is provided on the top of the lower limit plate (5), a fixing bolt (8) is connected to the inner part of the fixing groove (9), and the casing (1) is provided with a protective cover (2). ) is threadedly connected to a reinforcing bolt (10), the outer portion of the upper limit plate (4) is threadedly connected to a reinforcing bolt (10), the outer portion of the lower limit plate (5) is threadedly connected to a reinforcing bolt (10), the inner portion of the upper limit plate (4) is fixedly connected to a bearing (7), the inner side of the bearing (7) is fixedly connected to a rotating shaft (6), the inner portion of the lower limit plate (5) is rotatably connected to a rotating shaft (6), and the outer portion of the rotating shaft (6) is fixedly connected to a reinforcing component.

2. The skewed slot rotor core structure according to claim 1, characterized in that: The reinforcement assembly comprises a reinforcement ring (11), each of the reinforcement rings (11) is slidably connected to the outside of the rotating shaft (6), each of the reinforcement rings (11) is provided with a support (12) on the outside, each of the support (12) is threadedly connected to a limiting bolt (14) on the inside, and each of the reinforcement rings (11) is threadedly connected to the limiting bolt (14) on the inside.

3. The skewed slot rotor core structure according to claim 2, characterized in that: The support (12) is arranged inside the clamping groove (13), the outside of the support (12) is provided with a skewed slot core group (3), and the inside of each skewed slot core group (3) is provided with a clamping groove (13).

4. The skewed slot rotor core structure according to claim 3, characterized in that: A magnetic steel group (15) is arranged inside the skew slot core group (3), and a rotating seat (16) is fixedly connected to the bottom of the magnetic steel group (15).

5. The skewed slot rotor core structure according to claim 4, characterized in that: The rotating seat (16) is provided with a mounting groove (22) inside, the rotating seat (16) is rotatably connected to a clamping arm (17) inside, and the bottom of the clamping arm (17) is rotatably connected to a clamping wheel (19).

6. The skewed slot rotor core structure according to claim 4, characterized in that: Both sides of the interior of the rotating seat (16) are fixedly connected with springs (18), and the adjacent ends of the springs (18) are fixedly connected with clamping arms (17).

7. The skewed slot rotor core structure according to claim 4, characterized in that: The top of each magnetic steel group (15) is provided with a limiting groove (21), and the interior of each limiting groove (21) is fixedly connected to a limiting block (20).

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