Structure for replacing insulating slot paper with skeleton for motor stator

Abstract

The utility model discloses a framework replacement insulation slot paper structure for a motor stator, which comprises a stator, a rotor, a stator core, a stator winding and the like, an upper framework and a lower framework are respectively arranged above and below the stator core, a top plate and a coil support piece are arranged above the upper framework, and insulation protection pieces are arranged at the bottom of the upper framework and above the lower framework. The plug connectors of the upper framework are connected with the plug grooves of the lower framework in a plug-in mode, the lower framework and the upper framework are integrally formed through PBT resin materials in an injection molding mode, a motor leading-out wire copper wire and the resin framework are bound into a whole through binding holes, rotor end plates and balance blocks are arranged on the upper side and the lower side of the rotor, and positioning holes and electromagnetic blocks are arranged in a rotor iron core. A non-uniform unequal air gap design is adopted, the stator iron core is formed by laminating silicon steel sheets, the rotor iron core is also formed by laminating silicon steel sheets and connected through self-buckling points, and the structure improves the stability and reliability of insulation performance, is convenient and rapid to install, improves the production efficiency, is reliable in connection, facilitates weight reduction and ventilation of the motor, and improves the performance.

Description

Technical Field

[0001] This utility model belongs to the technical field of motor manufacturing, specifically relating to a skeleton structure for replacing insulating slot paper in motor stators. Background Technology

[0002] Its main function is to convert other forms of energy into electrical energy. In a thermal power plant, steam drives the turbine to rotate, and the turbine drives the rotor of the generator to rotate. The stator winding and rotor winding of the generator convert mechanical energy into electrical energy through electromagnetic induction. When the rotor rotates in the stator magnetic field, the magnetic flux in the stator winding changes. According to Faraday's law of electromagnetic induction, an induced electromotive force is generated in the stator winding, thereby realizing the conversion of mechanical energy into electrical energy.

[0003] However, most motors on the market currently use insulating slot paper as electrical isolation material, but this has problems such as complicated installation and poor heat conduction performance. The traditional insulating slot paper installation process is cumbersome and increases production costs. The presence of slot paper affects the heat conduction inside the motor, resulting in poor heat dissipation. During long-term operation, the slot paper may age or be damaged, affecting the service life of the motor. Utility Model Content

[0004] The purpose of this utility model is to provide a skeleton structure for motor stators that replaces the insulating slot paper, in order to solve the problems mentioned in the background art, such as the fact that the current motors on the market generally use insulating slot paper as electrical isolation material, but there are problems such as complicated installation and poor heat conduction performance. The traditional insulating slot paper installation process is cumbersome, which increases production costs. The presence of slot paper affects the heat conduction inside the motor, resulting in poor heat dissipation. During long-term operation, the slot paper may age or be damaged, affecting the service life of the motor.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a frame structure for replacing insulating slot paper in a motor stator, comprising a stator;

[0006] A rotor is provided inside the stator, a stator core is provided inside the stator, a stator winding is provided inside the stator core, and copper wire is provided outside the stator winding.

[0007] An upper frame is provided above the stator core, a lower frame is provided at the bottom of the stator core, a top plate is provided above the upper frame, and a coil support is provided above the upper frame.

[0008] Preferably, an insulating protective component is provided at the bottom of the upper frame, a coil groove is provided at the top of the insulating protective component, and a connector is provided at the bottom of the insulating protective component of the upper frame.

[0009] Preferably, an insulating protective component is provided at the upper position of the lower frame, and a plug-in groove is provided at the top position of the insulating protective component of the lower frame, and the plug-in component is plugged into the plug-in groove.

[0010] Preferably, the lower frame and the upper frame are integrally molded using PBT resin material, and the copper wires of the motor lead wires are wound and fixed to the resin frame through binding holes.

[0011] Preferably, a binding hole is provided at the top of the top plate, and the upper frame is connected to the top plate by a snap fastener.

[0012] Preferably, rotor end plates are provided at the upper and lower sides of the rotor, a balance block is provided at the upper right side of the top rotor end plate, and a balance block is provided at the lower left side of the bottom rotor end plate.

[0013] Preferably, the rotor has an internal array of rotor cores, and the rotor cores have an internal annular array of positioning holes. The rotor cores, rotor end plates, and balance blocks are fixedly connected by the positioning holes and rivets.

[0014] Preferably, an electromagnetic block is provided at the internal position of the rotor core arranged in the array. The rotor core adopts a non-uniform and unequal air gap design to facilitate weight reduction and ventilation. The stator core is formed by stacking silicon steel sheets, and the rotor core is formed by stacking silicon steel sheets of the same thickness, with each silicon steel sheet connected by self-locking points.

[0015] Compared with the prior art, this utility model provides a skeleton structure for motor stators that replaces the insulating slot paper, and has the following beneficial effects:

[0016] By using an upper and lower frame, top plate, coil support components, insulation protection components, coil slots, connectors, connector slots, binding holes, and clips, the upper and lower frames replace the traditional insulation slot paper, improving the stability and reliability of insulation performance. For example, the insulation protection components on the upper and lower frames better protect the stator windings. The connectors on the upper frame are connected to the connector slots on the lower frame, making installation convenient and quick, improving production efficiency. The lower and upper frames are integrally molded from PBT resin material, possessing good mechanical strength and insulation performance, ensuring the stability of the motor during operation. The motor lead copper wires are integrated with the resin frame binding device through binding holes, improving connection reliability and reducing the risk of failure due to poor connection. The top plate is connected to the upper frame by clips, facilitating disassembly and maintenance. When internal maintenance of the motor is required, it can be quickly opened for operation.

[0017] By using rotor end plates, balance blocks, rotor core, positioning holes, and rivets, rotor end plates are installed on both the top and bottom sides of the rotor to effectively fix and protect the rotor core, preventing displacement or damage during operation. Balance blocks are installed on different sides of the top and bottom rotor end plates to balance the rotor weight, reduce vibration and noise during motor operation, and improve the stability and reliability of the motor. Positioning holes are arranged in a ring array inside the rotor core. The rotor core, rotor end plates, and balance blocks are fixedly connected through positioning holes and rivets, ensuring a firm and reliable connection that can withstand the centrifugal force generated when the motor rotates at high speed, ensuring the safe operation of the motor. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the stator core structure in this utility model.

[0020] Figure 3 This is a schematic diagram of the top plate in this utility model.

[0021] Figure 4 This is a schematic diagram of the lower frame structure of this utility model.

[0022] Figure 5 This is a schematic diagram of the insulating protective component in this utility model.

[0023] Figure 6 This is a schematic diagram of the rotor in this utility model.

[0024] Figure 7 This is a schematic diagram of the rotor core in this utility model.

[0025] Figure 8 This is a schematic diagram of the structure of the balance block in this utility model.

[0026] Figure 9 This is a schematic diagram of the electromagnetic block in this utility model.

[0027] In the diagram: 1. Stator; 2. Rotor; 3. Top plate; 4. Upper frame; 5. Lower frame; 6. Stator core; 7. Coil slot; 8. Insulation protection component; 9. Connector; 10. Connector slot; 11. Coil support component; 12. Binding hole; 13. Stator winding; 14. Copper wire; 15. Rotor core; 16. Positioning hole; 17. Balance block; 18. Rotor end plate; 19. Electromagnetic block; 20. Rivet; 21. Buckle. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] This utility model provides, for example Figure 1-9 The diagram shows a skeleton replacement insulating slot paper structure for a motor stator, comprising a stator 1;

[0030] A rotor 2 is provided inside the stator 1, a stator core 6 is provided inside the stator 1, a stator winding 13 is provided inside the stator core 6, and a copper wire 14 is provided outside the stator winding 13.

[0031] An upper frame 4 is provided above the stator core 6, a lower frame 5 is provided at the bottom of the stator core 6, a top plate 3 is provided above the upper frame 4, and a coil support 11 is provided above the upper frame 4.

[0032] An insulating protective element 8 is provided at the bottom of the upper frame 4, a coil groove 7 is provided at the top of the insulating protective element 8, and a plug-in element 9 is provided at the bottom of the insulating protective element 8 of the upper frame 4.

[0033] An insulating protective component 8 is provided above the lower frame 5, and a plug-in groove 10 is provided at the top of the insulating protective component 8 of the lower frame 5. The plug-in component 9 is plugged into the plug-in groove 10.

[0034] The lower frame 5 and the upper frame 4 are integrally molded by injection molding of PBT resin material, and the copper wire 14 of the motor lead wire is wrapped and fixed to the resin frame through the binding hole 12.

[0035] A binding hole 12 is provided above the top plate 3, and the upper frame 4 is connected to the top plate 3 by a buckle 21.

[0036] Rotor 2 has rotor end plates 18 on its upper and lower sides respectively. A balance block 17 is set on the right side above the top rotor end plate 18 and on the left side below the bottom rotor end plate 18.

[0037] The rotor 2 has a rotor core 15 arranged in an array inside. The rotor core 15 has a positioning hole 16 arranged in an annular array inside. The rotor core 15, rotor end plate 18 and balance block 17 are fixedly connected through the positioning hole 16 and rivets 20.

[0038] Electromagnetic blocks 19 are installed inside the rotor core 15 of the array. The rotor core 15 adopts a non-uniform and unequal air gap design to facilitate weight reduction and ventilation. The stator core 6 is made of stacked silicon steel sheets. The rotor core 15 is made of stacked silicon steel sheets of the same thickness, and each silicon steel sheet is connected by self-locking points.

[0039] In this embodiment, the specific implementation steps for a stator frame to replace the insulating slot paper structure of a motor are as follows: Check the stator 1, rotor 2, upper frame 4, lower frame 5, top plate 3, coil support 11, and other components for damage. If any damage is found, replace them promptly. Ensure that the connecting components such as the insulating protective component 8, plug-in component 9, plug-in slot 10, and buckle 21 are intact. Install the lower frame 5 at the bottom of the stator core 6, ensuring that the insulating protective component 8 of the lower frame 5 is tightly fitted to the stator core 6. Install the stator winding 13 inside the stator core 6 and arrange the copper wire 14. Install the upper frame 4 above the stator core 6, connecting the plug-in component 9 at the bottom of the insulating protective component 8 of the upper frame 4 to the plug-in slot 10 at the top of the insulating protective component 8 of the lower frame 5. The top plate 3 is installed above the upper frame 4 and connected by snap-fit ​​21. The rotor core 15 is arranged in an array and positioning holes 16 are set in a ring array inside the rotor core 15. The electromagnetic block 19 is installed inside the rotor core 15. The rotor end plate 18 is installed on the upper and lower sides of the rotor 2. The rotor core 15, rotor end plate 18 and balance block 17 are fixedly connected by positioning holes 16 and rivets 20. The installed rotor 2 is placed inside the stator 1, ensuring that the central axis of the rotor 2 coincides with that of the stator 1. The copper wire 14 of the motor lead wire is tied to the resin frame binding device through binding holes 12. Check whether the installation of each component is firm and the connection is reliable. Debug and run the motor and observe whether the motor performance is normal.

[0040] like Figure 1-5 As shown, an upper frame 4 is provided above the stator core 6, a lower frame 5 is provided at the bottom of the stator core 6, a top plate 3 is provided above the upper frame 4, a coil support 11 is provided above the upper frame 4, an insulation protection 8 is provided at the bottom of the upper frame 4, a coil groove 7 is provided at the top of the insulation protection 8, a plug-in 9 is provided at the bottom of the insulation protection 8 of the upper frame 4, an insulation protection 8 is provided above the lower frame 5, a plug-in groove 10 is provided at the top of the insulation protection 8 of the lower frame 5, and the plug-in 9 is plugged into the plug-in groove 10. The lower frame 5 and the upper frame 4 are integrally molded by injection molding of PBT resin material. The motor lead copper wire 14 is integrated with the resin frame binding device through binding holes 12. Binding holes 12 are provided above the top plate 3, and the upper frame 4 and the top plate 3 are connected by snap-fit ​​21.

[0041] Preferably, the upper frame 4 and lower frame 5 are used to replace the traditional insulating groove paper, which improves the stability and reliability of the insulation performance. For example, the insulating protective parts 8 on the upper frame 4 and lower frame 5 can better protect the stator winding 13. The plug-in parts 9 of the upper frame 4 are plugged into the plug-in slots 10 of the lower frame 5, which is convenient and quick to install and improves production efficiency. The lower frame 5 and the upper frame 4 are integrally molded by injection molding of PBT resin material, which has good mechanical strength and insulation performance, ensuring the stability of the motor during operation. The copper wire 14 of the motor lead wire is integrated with the resin frame binding tool through the binding hole 12, which improves the reliability of the connection and reduces the risk of failure caused by poor connection. The top plate 3 and the upper frame 4 are connected by the buckle 21, which is convenient for disassembly and maintenance. When it is necessary to inspect the inside of the motor, it can be quickly opened for operation.

[0042] like Figure 6-9 As shown, rotor end plates 18 are respectively provided on the upper and lower sides of rotor 2. A balance block 17 is provided on the right side above the top rotor end plate 18 and on the left side below the bottom rotor end plate 18. A rotor core 15 is arranged in an array inside rotor 2. A positioning hole 16 is arranged in an annular array inside the rotor core 15. The rotor core 15, rotor end plates 18 and balance block 17 are fixedly connected through the positioning hole 16 and rivets 20.

[0043] Preferably, rotor end plates 18 are provided on the upper and lower sides of the rotor 2, which can effectively fix and protect the rotor core 15, preventing displacement or damage to the rotor core 15 during operation. Balance blocks 17 are provided on different sides of the top and bottom rotor end plates 18, which helps to balance the weight of the rotor 2, reduce vibration and noise during motor operation, and improve the stability and reliability of the motor. Positioning holes 16 are arranged in a ring array inside the rotor core 15. The rotor core 15, rotor end plates 18 and balance blocks 17 are fixedly connected through the positioning holes 16 and rivets 20. The connection is firm and reliable, and can withstand the centrifugal force generated when the motor rotates at high speed, ensuring the safe operation of the motor.

[0044] like Figure 1-9 As shown, an electromagnetic block 19 is installed inside the rotor core 15 of the array. The rotor core 15 adopts a non-uniform and unequal air gap design to facilitate weight reduction and ventilation. The stator core 6 is made of stacked silicon steel sheets. The rotor core 15 is made of stacked silicon steel sheets of the same thickness, and each silicon steel sheet is connected by a self-locking point.

[0045] Optionally, an electromagnetic block 19 is installed inside the rotor core 15 arranged in the array, which can generate a strong magnetic field, improve the output power and efficiency of the motor. The rotor core 15 adopts a non-uniform unequal air gap design, which on the one hand helps to reduce the weight of the motor, making it easier to install and transport, and on the other hand facilitates ventilation, enabling better heat dissipation, improving the reliability and service life of the motor. The stator core 6 is made of silicon steel sheets stacked together, which has good magnetic permeability, can reduce hysteresis loss and eddy current loss, and improve the efficiency of the motor. The rotor core 15 is made of silicon steel sheets of the same thickness stacked together, and each silicon steel sheet is connected by self-locking points, which is firm and reliable, not easy to loosen, and can ensure the stability of the motor when rotating at high speed.

[0046] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A skeleton replacement insulating slot paper structure for an electric motor stator, comprising a stator (1); The rotor (2) is provided inside the stator (1), the stator core (6) is provided inside the stator (1), the stator winding (13) is provided inside the stator core (6), and the copper wire (14) is provided outside the stator winding (13). Its features are: An upper frame (4) is provided above the stator core (6), a lower frame (5) is provided at the bottom of the stator core (6), a top plate (3) is provided above the upper frame (4), and a coil support (11) is provided above the upper frame (4).

2. The skeleton structure for replacing insulating slot paper in a motor stator according to claim 1, characterized in that: An insulating protective element (8) is provided at the bottom of the upper frame (4), a coil groove (7) is provided at the top of the insulating protective element (8), and a plug-in element (9) is provided at the bottom of the insulating protective element (8) of the upper frame (4).

3. The skeleton structure for replacing insulating slot paper in a motor stator according to claim 2, characterized in that: An insulating protective element (8) is provided above the lower frame (5), and a plug groove (10) is provided at the top of the insulating protective element (8) of the lower frame (5). The plug (9) is plugged into the plug groove (10).

4. A skeleton structure for replacing insulating slot paper in a motor stator according to claim 3, characterized in that: The lower frame (5) and the upper frame (4) are integrally molded by injection molding of PBT resin material, and the copper wire (14) of the motor lead wire is wound and fixed to the resin frame through the binding hole (12).

5. A skeleton structure for replacing insulating slot paper in a motor stator according to claim 4, characterized in that: A binding hole (12) is provided above the top plate (3), and the upper frame (4) is connected to the top plate (3) by a buckle (21).

6. A skeleton structure for replacing insulating slot paper in a motor stator according to claim 1, characterized in that: The rotor (2) is provided with rotor end plates (18) on the upper and lower sides respectively. A balance block (17) is provided on the right side above the top rotor end plate (18) and on the left side below the bottom rotor end plate (18).

7. A skeleton structure for replacing insulating slot paper in a motor stator according to claim 6, characterized in that: The rotor (2) has a rotor core (15) arranged in an array inside. The rotor core (15) has a positioning hole (16) arranged in an annular array inside. The rotor core (15), rotor end plate (18) and balance block (17) are fixedly connected by positioning hole (16) and rivet (20).

8. A skeleton structure for replacing insulating slot paper in a motor stator according to claim 7, characterized in that: Electromagnetic blocks (19) are provided inside the rotor core (15) of the array. The rotor core (15) adopts a non-uniform and unequal air gap design to facilitate weight reduction and ventilation. The stator core (6) is formed by stacking silicon steel sheets. The rotor core (15) is formed by stacking silicon steel sheets of the same thickness and connecting each silicon steel sheet through self-locking points.

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