Stator supporting structure of switched reluctance motor

Abstract

The utility model relates to the technical field of motor manufacturing, and particularly discloses a switched reluctance motor stator supporting structure which comprises a motor shell, a stator core and a plurality of connecting assemblies. A plurality of mounting grooves are formed in the inner wall of the motor shell; the mounting grooves are connected with mounting blocks arranged on the outer wall of the stator core in a clamping manner; the connecting assembly comprises a locking bolt and a clamping block, the locking bolt is mounted on the clamping block, and the tail end of the locking bolt is in threaded connection with the mounting block. According to the structure, the mounting grooves are matched with the mounting blocks, the inclined clamping grooves are matched with the clamping blocks, and the locking bolts are combined for fastening, so that the stator iron core and the motor shell can be quickly mounted and dismounted, the stator iron core can be easily pulled out only by unscrewing the bolts and removing the clamping blocks, complicated tools are not needed, and the maintenance and overhaul efficiency is greatly improved. The problems that a traditional switched reluctance motor stator supporting structure is inconvenient to install, parts are prone to being damaged, disassembly is difficult, maintenance and overhaul are not facilitated, and a stator is difficult to replace independently when a fault occurs are solved.

Description

Technical Field

[0001] This utility model belongs to the field of motor manufacturing technology, specifically, it relates to a stator support structure for a switched reluctance motor. Background Technology

[0002] In modern industry, switched reluctance motors (SRMs), with their unique doubly salient pole structure, simple rotor construction, and excellent fault tolerance, have become core power components in high-end equipment fields such as new energy vehicle drive systems, industrial servo devices, and smart home appliances. As a key carrier for motor energy conversion, the reliable fixation of the stator assembly has a decisive impact on the overall performance of the machine, and its support structure design is directly related to the motor's power density, vibration and noise characteristics, and total life cycle cost.

[0003] Traditional switched reluctance motor stator support structures primarily employ a combination of interference fits and welding to achieve the mechanical connection between the stator core and the housing. Interference fits utilize prestressed assembly to create axial / radial clamping force; common implementation methods include hydraulic expansion and thermal differential methods. While achieving bond strengths exceeding 50 MPa, these methods present significant engineering limitations: precise control of the clamping force and fit tolerances during assembly is crucial, and microscopic deformation at the silicon steel lamination interface can easily occur, leading to core magnetic circuit distortion. Furthermore, under long-term thermal cycling, differences in CTE between different materials can cause contact stress relaxation, increasing stator radial runout and affecting air gap uniformity. While welding provides a metallurgical bond, localized high-temperature inputs can damage the core's insulating coating, increasing eddy current losses between laminations. Simultaneously, thermal stress concentration is prone to occur in the weld area, forming microcrack propagation sources under high-frequency start-stop conditions. Meanwhile, the assembly process requires specialized tooling and has a narrow process window, with a single assembly time of 2-4 hours, making it difficult to adapt to the pace of automated production lines; in maintenance scenarios, destructive removal methods such as wire cutting or oxy-acetylene cutting are required, resulting in a low rate of housing reuse; when the stator fails, modular replacement is not possible, and the housing-end cover assembly, which accounts for more than 60% of the value, must be replaced as well, significantly increasing the maintenance cost of the equipment throughout its entire life cycle.

[0004] Based on this, the present invention provides a stator support structure for a switched reluctance motor to solve the problems existing in the prior art. Utility Model Content

[0005] In view of this, the main objective of this utility model is to provide a stator support structure for a switched reluctance motor, so as to solve the problems of inconvenient installation, easy damage to components, difficult disassembly, inconvenient maintenance and repair, and difficulty in replacing the stator alone in case of failure that exist in the traditional stator support structure for switched reluctance motors.

[0006] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0007] A stator support structure for a switched reluctance motor includes a motor housing, a stator core, and multiple connecting components. Multiple mounting slots are provided on the inner wall of the motor housing, and these mounting slots are engaged with mounting blocks disposed on the outer wall of the stator core. Each connecting component includes a locking bolt and a locking block; the locking bolt is mounted on the locking block, and the end of the locking bolt is threadedly connected to the mounting block.

[0008] In a preferred embodiment, the mounting groove is a T-shaped groove, and the opening of the mounting groove faces the inside of the motor housing.

[0009] In a preferred embodiment, a plurality of the mounting blocks are arranged circumferentially along the outer wall of the stator core and correspond to the position and shape of the mounting slot.

[0010] In a preferred embodiment, the top of the mounting block has an internal threaded hole, which is threaded to the end of the locking bolt.

[0011] In a preferred embodiment, the mounting groove is further provided with slots at both ends, the outer wall of the slot is inclined, and the side wall of the card block is provided with an inclined surface parallel to the slot, the slot matching the inclined surface.

[0012] In a preferred embodiment, the inner wall of the motor housing is provided with limiting protrusions on both sides of the mounting groove, and the outer wall of the stator core is provided with corresponding limiting grooves on both sides of the mounting block, wherein the limiting protrusions and limiting grooves are adapted to each other.

[0013] In a preferred embodiment, end caps are provided at both ends of the motor housing, and the end caps are connected to the end faces of the motor housing by connecting bolts.

[0014] In a preferred embodiment, the stator core is further provided with a plurality of magnetic groups evenly distributed therebetween, and a rotor is disposed in the middle of the magnetic groups.

[0015] In a preferred embodiment, the rotor is rotatably disposed within the stator core.

[0016] In a preferred embodiment, anti-slip rubber pads are provided on the contact surfaces of the mounting block and the mounting groove.

[0017] Compared with the prior art, this utility model provides a stator support structure for a switched reluctance motor, which has the following advantages:

[0018] 1. By utilizing the matching of mounting slots and mounting blocks, the cooperation of inclined slots and blocks, and the tightening of locking bolts, the installation and connection of the stator core and the motor housing can be completed quickly;

[0019] 2. During disassembly, simply loosen the bolts and remove the clips to easily pull out the stator core for individual replacement, without the need for complicated tools, significantly improving maintenance and repair efficiency. This solves the problems of inconvenient installation, easy damage to components, difficult disassembly, and difficulty in maintenance and repair, as well as the inability to replace the stator individually in case of failure, which are inherent in traditional switched reluctance motor stator support structures. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is an exploded view of the stator support structure of the switched reluctance motor of this utility model;

[0022] Figure 2 This is a schematic diagram of the internal structure of the stator support structure of the switched reluctance motor of this utility model;

[0023] Figure 3 This is a top view of the housing of the stator support structure of the switched reluctance motor of this utility model;

[0024] Figure 4 This is a cross-sectional view of the housing of the stator support structure of the switched reluctance motor of this utility model;

[0025] Figure 5 This is a schematic diagram of the connection of the stator support structure of the switched reluctance motor of this utility model;

[0026] Figure 6 This utility model relates to the stator support structure of a switched reluctance motor. Figure 5 Enlarged view of point A in the middle;

[0027] Figure 7 This is a three-dimensional view of the connecting components of the stator support structure of the switched reluctance motor of this utility model.

[0028] [Explanation of Key Component Symbols]

[0029] 1. Motor housing; 2. End cover; 3. Stator core; 4. Rotor; 5. Magnetic assembly; 6. Limiting protrusion; 7. Limiting groove; 8. Mounting slot; 9. Slot; 10. Mounting block; 11. Internal threaded hole; 12. Locking bolt; 13. Clamping block; 14. Bevel; 15. Connecting bolt. Detailed Implementation

[0030] The structure of the stator support structure of the switched reluctance motor will be further described in detail below with reference to the accompanying drawings and embodiments of the present invention.

[0031] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0032] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments as described in this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0033] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0034] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 9 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0035] As per the instruction manual Figures 1-7 As shown, this utility model provides a technical solution:

[0036] A stator support structure for a switched reluctance motor includes a motor housing 1, a stator core 3, and multiple connecting components. The inner wall of the motor housing 1 has multiple mounting slots 8 evenly distributed circumferentially. Each mounting slot 8 is T-shaped, with its opening facing inwards towards the motor housing 1. The stator core 3 is movably mounted within the motor housing 1. Multiple mounting blocks 10 are positioned circumferentially on the outer wall of the stator core 3 corresponding to the mounting slots 8. Each mounting block 10 has a T-shaped cross-section and is adapted to fit the mounting slots 8. The connecting components are used to securely connect the mounting blocks 10 to the mounting slots 8, achieving a firm connection between the stator core 3 and the motor housing 1. The connecting components include locking bolts 12 and locking blocks 13. The locking bolts 12 are installed in the locking blocks 13, and the ends of the locking bolts 12 are threaded into the mounting blocks 10.

[0037] In the above description, the mounting groove 8 on the inner wall of the motor housing 1 and the mounting block 10 on the outer wall of the stator core 3 are mutually adapted to form a basic mounting and positioning structure. During installation, the mounting block 10 can be directly embedded into the mounting groove 8 to achieve the initial positioning of the stator core 3 within the motor housing 1. The locking bolt 12 and the locking block 13 in the connecting assembly further strengthen the connection. The locking bolt 12 is installed in the locking block 13, and its end engages with the mounting block 10. By tightening the locking bolt 12, the locking block 13 and the mounting block 10 can be tightly fitted together, firmly fixing the mounting block 10 in the mounting groove 8, thereby ensuring a stable connection between the stator core 3 and the motor housing 1.

[0038] In a preferred embodiment, such as Figure 1 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the mounting block 10 has an internal threaded hole 11 at the top, and the lower end of the locking bolt 12 is threaded into the internal threaded hole 11. Furthermore, there are slots 9 at both ends of the mounting groove 8. The outer wall of the slot 9 is inclined. The side wall of the locking block 13 has an inclined surface 14 parallel to the slot 9. The slot 9 and the inclined surface 14 of the locking block 13 are adapted to each other.

[0039] In the above description, the internal threaded hole 11 at the top of the mounting block 10 cooperates with the locking bolt 12. By tightening the locking bolt 12, an axial tensile force can be generated, causing the inclined groove 9 on the mounting groove 8 to fit and clamp with the inclined surface 14 parallel to the side wall of the clamping block 13. Under the action of the pulling force of the locking bolt 12, the inclined surface 14 of the clamping block 13 will be embedded along the inclined direction of the groove 9, generating a lateral compressive force, which further fixes the mounting block 10 tightly in the mounting groove 8. When disassembling, the clamping block 13 can be easily removed by simply loosening the locking bolt 12, thereby realizing the disassembly of the stator core 3. The operation is convenient and efficient.

[0040] In a preferred embodiment, such as Figure 1 , Figure 2 and Figure 3 As shown, the inner wall of the motor housing 1 is provided with limiting protrusions 6 on both sides of the mounting groove 8, and the outer wall of the stator core 3 is provided with corresponding limiting grooves 7 on both sides of the mounting block 10. The limiting protrusions 6 and the limiting grooves 7 are adapted to each other.

[0041] In the above description, the limiting protrusions 6 on both sides of the mounting groove 8 on the inner wall of the motor housing 1 and the limiting grooves 7 on both sides of the mounting block 10 on the outer wall of the stator core 3 cooperate with each other. During the installation process, the limiting protrusions 6 can be quickly embedded into the limiting grooves 7, which helps the mounting block 10 to be accurately aligned with the mounting groove 8 and achieve positioning. At the same time, when the motor is running, the cooperation between the limiting protrusions 6 and the limiting grooves 7 can effectively limit the radial and circumferential displacement of the stator core 3 in the motor housing 1, prevent the stator core 3 from loosening or shifting due to vibration and other factors, and enhance the stability and reliability of the stator core 3 installation when the motor is running.

[0042] In a preferred embodiment, such as Figure 1 and Figure 3 As shown, end caps 2 are installed at both ends of the motor housing 1, and connecting bolts 15 are installed on the end caps 2. The ends of the connecting bolts 15 are threaded to the end faces of the motor housing 1.

[0043] In the above description, the end cover 2 serves to protect the internal components of the motor, such as the stator core 3 and rotor 4, and can prevent dust and debris from entering the motor, thus maintaining a good operating environment for the motor. The connecting bolts 15 firmly fix the end cover 2 to both ends of the motor housing 1, ensuring the sealing and integrity of the overall structure of the motor.

[0044] In a preferred embodiment, such as Figure 1 and Figure 2 As shown, multiple magnetic groups 5 are equidistantly distributed inside the stator core 3, and a rotor 4 is installed in the middle of the stator core 3.

[0045] In the above description, the magnetic groups 5, which are equidistantly distributed inside the stator core 3, and the rotor 4 located in the middle are the core components of the motor to realize energy conversion. When the magnetic groups 5 are energized, they generate a magnetic field, which interacts with the rotor 4 to generate electromagnetic force, driving the rotor 4 to rotate, thereby converting electrical energy into mechanical energy and realizing the power output function of the motor.

[0046] In a preferred embodiment, such as Figure 1 and Figure 2 As shown, an anti-slip rubber pad is provided on the contact surface between the mounting block 10 and the mounting groove 8.

[0047] In the above description, the anti-slip rubber pad on the contact surface between the mounting block 10 and the mounting groove 8 can effectively increase the friction between the two. During the operation of the motor, even if it is subjected to external forces such as vibration, the anti-slip rubber pad can prevent the mounting block 10 from sliding in the mounting groove 8.

[0048] The implementation principle of the switched reluctance motor stator support structure described in this embodiment is as follows:

[0049] During installation, first, align the T-shaped mounting block 10 on the outer wall of the stator core 3 with the T-shaped mounting groove 8 on the inner wall of the motor housing 1 and insert it. At this time, the limiting protrusions 6 on both sides of the mounting groove 8 on the inner wall of the motor housing 1 are inserted into the corresponding limiting grooves 7 on the outer wall of the stator core 3, completing precise positioning and circumferential limiting. Next, insert the locking block 13 with the inclined surface 14 parallel to the slot 9 along the inclined slot 9 on the mounting groove 8, and then screw in the locking bolt 12 to engage with the internal threaded hole 11 on the top of the mounting block 10 and tighten it. As the mounting block 10 is installed, its inclined surface 14 will be locked in the slot 9, thereby fixing the mounting block 10 and the mounting groove 8, realizing a firm connection between the stator core 3 and the motor housing 1. At the same time, the anti-slip rubber pads on the contact surface of the mounting block 10 and the mounting groove 8 further enhance the connection and stability. To prevent slippage, end caps 2 are installed at both ends of the motor housing 1. The connecting bolts 15 on the end caps 2 are engaged with the end faces of the motor housing 1 and tightened to complete the overall assembly. During operation, the magnetic group 5 inside the stator core 3 interacts with the rotor 4 in the middle to drive the motor. All structures work together to ensure the stable operation of the motor. When disassembling, simply reverse the operation: first unscrew the connecting bolts 15 on the end caps 2, remove the end caps 2, then loosen the locking bolts 12, and take out the locking block 13 along the inclined direction of the locking groove 9. After releasing the fixing of the locking block 13 and the locking bolts 12, the mounting block 10 of the stator core 3 can be directly pulled out from the mounting groove 8 of the motor housing 1. This avoids the interference fit connection method. The whole process does not require complicated tools and cumbersome steps, and can achieve quick disassembly and installation.

[0050] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the scope of protection of the present utility model.

Claims

1. A stator support structure for a switched reluctance motor, characterized in that, The device includes a motor housing (1), a stator core (3), and multiple connecting components. Multiple mounting slots (8) are provided on the inner wall of the motor housing (1), and the mounting slots (8) are engaged with mounting blocks (10) provided on the outer wall of the stator core (3). The connecting components include locking bolts (12) and locking blocks (13). The locking bolts (12) are mounted on the locking blocks (13), and the end of the locking bolts (12) is threadedly connected to the mounting blocks (10).

2. The stator support structure for a switched reluctance motor as described in claim 1, characterized in that, The mounting groove (8) is a T-shaped groove, and the opening of the mounting groove (8) faces the inside of the motor housing (1).

3. The stator support structure for a switched reluctance motor as described in claim 2, characterized in that, Multiple mounting blocks (10) are arranged circumferentially along the outer wall of the stator core (3) and correspond to the position and shape of the mounting groove (8).

4. The stator support structure for a switched reluctance motor as described in claim 1, characterized in that, The mounting block (10) has an internal threaded hole (11) at its top, and the internal threaded hole (11) is threaded to the end of the locking bolt (12).

5. The stator support structure for a switched reluctance motor as described in claim 1, characterized in that, The mounting groove (8) is also provided with slots (9) at both ends. The outer wall of the slot (9) is inclined. The side wall of the card block (13) is provided with an inclined surface (14) parallel to the slot (9). The slot (9) matches the inclined surface (14).

6. The stator support structure for a switched reluctance motor as described in claim 1, characterized in that, The inner wall of the motor housing (1) is provided with limiting protrusions (6) on both sides of the mounting groove (8), and the outer wall of the stator core (3) is provided with limiting grooves (7) on both sides of the mounting block (10). The limiting protrusions (6) and the limiting grooves (7) are adapted to each other.

7. The stator support structure for a switched reluctance motor as described in claim 1, characterized in that, Both ends of the motor housing (1) are provided with end caps (2), and the end caps (2) are connected to the end face of the motor housing (1) by connecting bolts (15).

8. The stator support structure for a switched reluctance motor as described in claim 1, characterized in that, The stator core (3) also has multiple magnetic groups (5) evenly distributed inside, and a rotor (4) is arranged in the middle of the magnetic groups (5).

9. The stator support structure of a switched reluctance motor as described in claim 8, characterized in that, The rotor (4) is rotatably mounted inside the stator core (3).

10. The stator support structure of a switched reluctance motor as described in claim 1, characterized in that, Anti-slip rubber pads are provided on the contact surfaces of the mounting block (10) and the mounting groove (8).

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