Motor

Abstract

The invention relates to the technical field of motors, and discloses a motor, which comprises a shell; the stator is arranged in the shell; the rotor is arranged in the shell through a bearing assembly and is coaxial with the stator, the rotor comprises a rotor disc assembly and a rotating shaft, and an air gap is formed between the rotor disc assembly and the stator; the motor further comprises an air gap adjusting structure. The bearing assembly is connected with the shell in a split mode, an air gap adjusting structure is arranged between the bearing assembly and the shell, and the air gap adjusting structure adjusts the axial positions of the bearing assembly, the rotating shaft and the rotor disc assembly so as to adjust the size of an air gap. And / or the rotor disc assembly is connected with the rotating shaft in a split mode, an air gap adjusting structure is arranged between the rotor disc assembly and the rotating shaft, and the air gap adjusting structure adjusts the axial position of the rotor disc assembly so as to adjust the size of the air gap. When the air gap is adjusted, the bearing assembly does not need to be disassembled and assembled, the air gap adjusting process is greatly simplified, and the problem that the bearing assembly is damaged when the air gap adjusting structure is replaced is effectively avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and in particular to a motor. Background Art

[0002] In an axial flux motor, there is an air gap between the stator and the rotor. The size of the air gap affects the motor's starting torque and the efficiency of cutting the magnetic flux lines during operation. Adjusting the air gap between the stator and the rotor is an important maintenance task to ensure the performance and efficiency of the motor.

[0003] The current method of adjusting the air gap between the stator and the rotor is to replace the air gap gasket inside the bearing support. However, since the air gap gasket is installed inside the bearing support, a different air gap gasket needs to be replaced each time the air gap is adjusted. When replacing the air gap gasket, the shaft, bearing and other components need to be disassembled and reinstalled, which is not only time-consuming and labor-intensive, but also causes damage to the bearing, bearing support, shaft and other components. Summary of the invention

[0004] In view of this, the present invention provides a motor to solve the problem that the current adjustment of the air gap between the stator and the rotor may cause damage to components such as bearings, bearing supports, and shafts.

[0005] The present invention provides a motor, comprising:

[0006] case;

[0007] a stator, the stator being arranged inside the housing;

[0008] A rotor, wherein the rotor is disposed inside the housing through a bearing assembly and is coaxially disposed with the stator, the rotor comprising a rotor disk assembly and a rotating shaft, and an air gap is provided between the rotor disk assembly and the stator;

[0009] The motor also includes an air gap adjustment structure;

[0010] The bearing assembly is separately connected to the housing, and an air gap adjustment structure is provided between the bearing assembly and the housing, and the air gap adjustment structure adjusts the axial positions of the bearing assembly, the rotating shaft and the rotor disk assembly to adjust the size of the air gap;

[0011] And / or, the rotor disk assembly is separately connected to the rotating shaft, and the air gap adjustment structure is provided between the rotor disk assembly and the rotating shaft, and the air gap adjustment structure adjusts the axial position of the rotor disk assembly to adjust the size of the air gap.

[0012] The beneficial effects of the above motor are:

[0013] In the above motor, since the air gap adjustment structure is not arranged inside the bearing assembly, but is arranged between the bearing assembly and the housing, and / or between the rotor disk assembly and the rotating shaft, the axial position of the rotor disk assembly can be adjusted through the air gap adjustment structure. Therefore, when adjusting the air gap, there is no need to disassemble and assemble the bearing assembly, which greatly simplifies the air gap adjustment process and effectively avoids the problem of damage to the bearing assembly when replacing the air gap adjustment structure.

[0014] Furthermore, since there is no need to disassemble or assemble the bearing assembly when adjusting the air gap, the adjustment of the air gap is faster and more convenient and can be completed in a shorter time.

[0015] In an optional embodiment, the bearing assembly comprises:

[0016] A bearing mounting structure is disposed separately from the housing, and at least one bearing accommodating cavity is disposed inside the bearing mounting structure;

[0017] at least one bearing, the bearing being disposed in the bearing accommodating cavity and being rotatably connected to the rotating shaft;

[0018] When the air gap adjustment structure is provided between the bearing assembly and the housing, the air gap adjustment structure is provided between the bearing mounting structure and the housing.

[0019] In an optional embodiment, a through hole is provided on the housing; and the bearing mounting structure comprises:

[0020] A bearing support, one end of which is located inside the housing, and the other end of which is movably extended out of the through hole of the housing;

[0021] a bearing cap connected to the other end of the bearing support;

[0022] Wherein, the air gap adjustment structure is provided between the bearing support and the housing, or the air gap adjustment structure is provided between the outer wall of the housing and the bearing cover.

[0023] In an optional embodiment, when the air gap adjustment structure is provided between the bearing support and the housing, a first convex plate is extended on the outer wall of the bearing support, and the air gap adjustment structure is provided between the housing and the first convex plate. When the thickness of the air gap adjustment structure changes, the distance between the first convex plate and the inner wall of the housing can be adjusted to achieve precise control of slight changes in the air gap.

[0024] In an optional embodiment, the air gap adjustment structure is detachably positioned between the inner wall of the shell and the first protruding plate by a first locking assembly.

[0025] In the above technical solution, the design of the first locking assembly enables the air gap adjustment structure to be quickly disassembled and reinstalled, which is convenient for rapid adjustment under different working conditions. The first locking assembly can ensure that the air gap adjustment structure is firmly fixed in the adjusted position to avoid displacement during the operation of the motor, thereby ensuring the stability and accuracy of the air gap. In addition, by adjusting the tightness of the first locking assembly, it is possible to accurately control small changes in the air gap and improve the adjustment accuracy.

[0026] In an optional embodiment, when the air gap adjustment structure is provided between the outer wall of the shell and the bearing cover, the outer diameter of the bearing cover is greater than the inner diameter of the through hole, and the air gap adjustment structure is provided between the outer wall of the shell and the bearing cover.

[0027] In the above technical solution, the air gap adjustment structure is arranged between the outer wall of the housing and the bearing cover, and the air gap can be adjusted from the outside without disassembling the motor housing, which greatly simplifies the adjustment process. And because there is no need to open the motor housing, it is more convenient to adjust the air gap. By replacing the air gap adjustment structure with different thicknesses and adjusting the distance between the outer wall of the housing and the bearing cover, precise control of the air gap can be achieved.

[0028] In an optional embodiment, the air gap adjustment structure is detachably positioned between the outer wall of the housing and the bearing cover via a second locking assembly.

[0029] In the above technical solution, the design of the second locking assembly enables the air gap adjustment structure to be quickly disassembled and reinstalled, which is convenient for rapid adjustment under different working conditions. The second locking assembly can ensure that the air gap adjustment structure is firmly fixed in the adjusted position to avoid displacement during the operation of the motor, thereby ensuring the stability and accuracy of the air gap. In addition, by adjusting the tightness of the second locking assembly, it is possible to accurately control small changes in the air gap and improve the adjustment accuracy.

[0030] In an optional embodiment, when the air gap adjustment structure is provided between the rotor disk assembly and the rotating shaft, a groove is provided at one end of the rotor disk assembly close to the bearing assembly, and a second convex plate is provided on the outer wall of the rotating shaft, and the second convex plate is accommodated in the groove.

[0031] In an optional implementation, the air gap adjustment structure is disposed between the second convex plate and the groove.

[0032] In an optional embodiment, the air gap adjustment structure is detachably positioned between the second convex plate and the rotor disk assembly by a third locking assembly.

[0033] In the above technical solution, the design of the third locking assembly enables the air gap adjustment structure to be quickly disassembled and reinstalled, which is convenient for rapid adjustment under different working conditions. The third locking assembly can ensure that the air gap adjustment structure is firmly fixed in the adjusted position to avoid displacement during the operation of the motor, thereby ensuring the stability and accuracy of the air gap. In addition, by adjusting the tightness of the third locking assembly, it is possible to accurately control small changes in the air gap and improve the adjustment accuracy.

[0034] In an optional embodiment, the air gap adjustment structure includes at least one air gap spacer;

[0035] And / or, the housing includes a rotor end cover and a stator end cover, the stator and the bearing assembly are arranged on the stator end cover, the rotor end cover is connected to the stator end cover and is surrounded by the stator end cover to form a cavity structure, and the rotating shaft movably passes through the rotor end cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0037] Figure 1 A cross-sectional view of a motor provided in Embodiment 1 of the present invention;

[0038] Figure 2 A cross-sectional view of a motor provided in Embodiment 1 of the present invention;

[0039] Figure 3 A schematic diagram of the external structure of a motor provided in Embodiment 1 of the present invention;

[0040] Figure 4 A cross-sectional view of a motor provided in Embodiment 2 of the present invention;

[0041] Figure 5 A cross-sectional view of a motor provided in Embodiment 2 of the present invention;

[0042] Figure 6 A schematic diagram of the external structure of a motor provided in Embodiment 2 of the present invention;

[0043] Figure 7 A cross-sectional view of a motor provided in Embodiment 3 of the present invention;

[0044] Figure 8 A cross-sectional view of a motor provided in Embodiment 3 of the present invention;

[0045] Fig. 9 This is a schematic structural diagram of a rotor disk body in a motor provided in Example 3 of the present invention.

[0046] Description of reference numerals:

[0047] 1. bearing assembly, 11. bearing, 12. bearing support, 13. bearing cover, 14. first convex plate; 2. rotor, 21. rotor disk assembly, 211. rotor disk body, 212. rotor core, 22. rotating shaft, 23. second convex plate, 24. groove; 3. stator; 4. rotor end cover; 5. stator end cover; 6. air gap gasket; 7. first locking assembly; 8. second locking assembly; 9. third locking assembly; 10. fourth locking assembly. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0049] In an axial flux motor, there is an air gap between the stator and the rotor. The size of the air gap affects the motor's starting torque and the efficiency of cutting the magnetic flux lines during operation. Adjusting the air gap between the stator and the rotor is an important maintenance task to ensure the performance and efficiency of the motor.

[0050] The current method of adjusting the air gap between the stator and the rotor is to replace the air gap gasket in the bearing support. However, since the air gap gasket is installed inside the bearing support, more specifically, between two bearings, a different air gap gasket needs to be replaced each time the air gap is adjusted. When replacing the air gap gasket, the shaft and the bearing need to be pulled out of the bearing support. After replacing the new air gap gasket, the shaft and the bearing need to be reinstalled on the bearing support, which is not only time-consuming and labor-intensive, but also causes damage to the bearing, the bearing support, the shaft and other components.

[0051] Based on this, the present invention provides a motor, which removes the air gap gasket from the bearing support and sets the air gap gasket outside the bearing support. More specifically, the air gap gasket is set at the intersection of the bearing support and the stator end cover, or the air gap gasket is set at the intersection of the rotor disk assembly and the rotating shaft. Therefore, when adjusting the air gap, there is no need to disassemble and assemble the bearing, thereby avoiding damage to the bearing, bearing support, shaft and other components when replacing the air gap gasket.

[0052] The motor of the present invention is an axial flux motor, which is very suitable for use in household and commercial scenarios, such as air conditioning fans, fan motors and blower motors, due to its high efficiency, compactness and low noise.

[0053] Combine the following Figures 1 to 9 , the motor of the present invention is described in detail.

[0054] Example 1

[0055] This embodiment provides a motor, combined with Figures 1 to 3 As shown, it includes a housing, a stator 3, a rotor 2 and an air gap adjustment structure. The housing is used to provide an accommodation space for the stator 3 and the rotor 2. The stator 3 is arranged inside the housing. The rotor 2 is arranged inside the housing through the bearing assembly 1 and is coaxially arranged with the stator 3. The rotor 2 includes a rotor disk assembly 21 and a rotating shaft 22 connected therebetween, and an air gap is provided between the rotor disk assembly 21 and the stator 3. More specifically, the rotor disk assembly 21 includes a rotor disk body 211 and a rotor core 212, and the stator 3 includes a stator core and a winding, and the air gap is between the rotor core 212 and the stator core. The bearing assembly 1 is separately arranged from the housing, and the air gap adjustment structure is arranged between the bearing assembly 1 and the housing. The air gap adjustment structure is used to adjust the axial position of the bearing assembly 1, the rotating shaft 22 and the rotor disk assembly 21 to achieve the adjustment of the air gap.

[0056] In the above-mentioned motor, since the air gap adjustment structure is not arranged inside the bearing assembly 1, but is arranged between the bearing assembly 1 and the housing, the bearing assembly 1 and the housing can be separated, and the axial position of the bearing assembly 1, the rotating shaft 22 and the rotor disk assembly 21 can be directly adjusted through the air gap adjustment structure. Therefore, when adjusting the air gap, there is no need to disassemble and assemble the bearing assembly 1, which greatly simplifies the air gap adjustment process and effectively avoids the problem of damage to the bearing assembly 1 when replacing the air gap adjustment structure.

[0057] Furthermore, since the bearing assembly 1 does not need to be disassembled when adjusting the air gap, the adjustment of the air gap is faster and more convenient, and can be completed in a shorter time.

[0058] It should be noted that the air gap adjustment structure of the present embodiment is arranged at the junction of the bearing assembly 1 and the housing, and the air gap adjustment structure can also be arranged at other positions of the bearing assembly 1 and the housing.

[0059] In some embodiments, the bearing assembly 1 includes a bearing mounting structure and a bearing 11. The bearing mounting structure is provided with at least one bearing accommodating cavity. The bearing 11 is provided with at least one bearing 11, which is arranged in the bearing accommodating cavity, that is, the outer ring of the bearing is embedded in the bearing accommodating cavity, and the bearing 11 is rotatably connected with the rotating shaft 22, that is, the rotating shaft 22 is embedded in the inner ring of the bearing. When an air gap adjustment structure is provided between the bearing assembly 1 and the housing, an air gap adjustment structure is provided between the bearing mounting structure and the housing.

[0060] The housing is provided with a through hole. The bearing mounting structure includes a bearing support 12 and a bearing cover 13. One end of the bearing support 12 is located inside the housing, and the other end of the bearing support 12 is movably extended out of the through hole of the housing. The bearing cover 13 is connected to the other end of the bearing support 12. An air gap adjustment structure is provided between the bearing support 12 and the housing.

[0061] In this embodiment, since the bearing support 12 and the housing are separately provided, the bearing support 12 can be axially adjusted relative to the housing, thereby further realizing the adjustment of the air gap.

[0062] In some embodiments, a first convex plate 14 is extended from the outer wall of the bearing support 12, and the air gap adjustment structure is arranged between the inner wall of the housing and the first convex plate 14, which can provide an air gap adjustment position external to the bearing assembly 1, making the air gap adjustment easier. When the thickness of the air gap adjustment structure changes, the distance between the first convex plate 14 and the inner wall of the housing can be adjusted to achieve precise control of small changes in the air gap.

[0063] Furthermore, because the size of the air gap adjustment structure in this embodiment is larger than the size arranged in the bearing support 12, the overall stability of the motor is further improved.

[0064] As an alternative embodiment, the first convex plate 14 is disposed on the outer side wall of the bearing support 12 outside the housing, and the air gap adjustment structure can also be disposed between the outer wall of the housing and the first convex plate 14. When the thickness of the air gap adjustment structure changes, it is also possible to achieve precise control of slight changes in the air gap.

[0065] In some embodiments, the air gap adjustment structure is removably positioned between the inner wall of the housing and the first convex plate 14 by the first locking assembly 7. The first locking assembly 7 includes a plurality of screws. A plurality of first connecting holes are circumferentially arranged on the first convex plate 14 and the stator end cover 5, respectively. The first convex plate 14 and the stator end cover 5 are connected by a plurality of screws, and the screws pass through the first connecting holes of the first convex plate 14 and the first connecting holes of the stator end cover 5. In this embodiment, the design of the first locking assembly 7 enables the air gap adjustment structure to be quickly disassembled and reinstalled, which is convenient for rapid adjustment under different working conditions. The first locking assembly 7 can ensure that the air gap adjustment structure is firmly fixed in the adjusted position to avoid displacement during the operation of the motor, thereby ensuring the stability and accuracy of the air gap. In addition, by adjusting the tightness of the first locking assembly 7, it is possible to achieve precise control of small changes in the air gap and improve the adjustment accuracy.

[0066] In some embodiments, the housing includes a rotor end cover 4 and a stator end cover 5. The stator 3 and the bearing support 12 of the bearing assembly 1 are arranged on the stator end cover 5. The rotor end cover 4 is connected to the stator end cover 5 and is surrounded by the stator end cover 5 to form a cavity structure, and the rotating shaft 22 movably passes through the rotor end cover 4.

[0067] In some embodiments, the air gap adjustment structure includes at least one air gap gasket 6. Therefore, when adjusting the air gap, in addition to changing the specifications of the air gap gasket 6, the number of the air gap gasket 6 can also be increased or decreased. In addition to being able to adjust the air gap between the rotor disk assembly 21 and the stator 3, the air gap gasket 6 can also seal the junction between the first convex plate 14 and the inner wall of the housing to prevent foreign matter from entering the housing of the motor.

[0068] The specific process of adjusting the air gap of the above motor is as follows:

[0069] Turn off the motor power supply and ensure that the motor is in a power-off state. If necessary, remove some peripheral components, such as the housing.

[0070] Use a suitable tool (such as a screwdriver) to loosen the first locking assembly 7. Separate the bearing assembly 1 from the housing and remove the air gap adjustment structure.

[0071] According to the required air gap size, select an air gap adjustment structure that meets the requirements, put the air gap adjustment structure back to the position of the inner wall of the housing, install the bearing assembly 1 on the housing, and re-tighten the first locking assembly 7 to ensure that the air gap adjustment structure is firmly fixed between the inner wall of the housing and the first convex plate 14.

[0072] Turn on the power, start the motor, observe the running status of the motor, and confirm whether the air gap adjustment achieves the expected effect.

[0073] Example 2

[0074] This embodiment provides a motor, combined with Figures 4 to 6 As shown, it includes a housing, a stator 3, a rotor 2 and an air gap adjustment structure. The housing is used to provide an accommodation space for the stator 3 and the rotor 2. The stator 3 is arranged inside the housing. The rotor 2 is arranged inside the housing through the bearing assembly 1 and is coaxially arranged with the stator 3. The rotor 2 includes a rotor disk assembly 21 and a rotating shaft 22 connected therebetween, and an air gap is provided between the rotor disk assembly 21 and the stator 3. More specifically, the rotor disk assembly 21 includes a rotor disk body 211 and a rotor core 212, and the stator 3 includes a stator core and a winding, and the air gap is between the rotor core 212 and the stator core. The bearing assembly 1 is separately provided with the housing, and the air gap adjustment structure is provided between the bearing assembly 1 and the housing. The air gap adjustment structure is used to adjust the axial position of the bearing assembly 1, the rotating shaft 22 and the rotor disk assembly 21 to achieve the adjustment of the air gap.

[0075] The bearing assembly 1 includes a bearing mounting structure and a bearing 11. At least one bearing accommodating cavity is provided inside the bearing mounting structure. At least one bearing 11 is provided, and the bearing 11 is arranged in the bearing accommodating cavity, that is, the outer ring of the bearing is embedded in the bearing accommodating cavity, and the bearing 11 is rotatably connected with the rotating shaft 22, that is, the rotating shaft 22 is embedded in the inner ring of the bearing. When an air gap adjustment structure is provided between the bearing assembly 1 and the housing, an air gap adjustment structure is provided between the bearing mounting structure and the housing.

[0076] The difference between this embodiment and embodiment 1 is that the specific installation position of the air gap adjustment structure of this embodiment is different from that of embodiment 1. More specifically, a through hole is provided on the housing. The bearing installation structure includes a bearing support 12 and a bearing cover 13. One end of the bearing support 12 is located inside the housing, and the other end of the bearing support 12 movably passes through the through hole of the housing and is connected to the bearing cover 13. More specifically, the other end of the bearing support 12 is connected to the bearing cover 13 through a fourth locking assembly 10, and the fourth locking assembly 10 includes a plurality of screws circumferentially spaced apart and connected between the bearing cover 13 and the bearing support 12. The outer diameter of the bearing cover 13 is larger than the inner diameter of the through hole. The air gap adjustment structure is arranged between the outer wall of the housing and the bearing cover 13.

[0077] In this embodiment, because the other end of the bearing support 12 is movably extended from the through hole of the shell, after replacing the air gap adjustment structure with different thicknesses, the axial position between the bearing cover 13 and the shell will change, and the bearing cover 13 is directly connected to the bearing support 12, so the axial position of the rotating shaft 22 and the rotor disk assembly 21 can be adjusted, thereby realizing the adjustment of the air gap.

[0078] The air gap adjustment structure is arranged between the outer wall of the housing and the bearing cover 13. The air gap can be adjusted from the outside without disassembling the motor housing, which greatly simplifies the adjustment process. And because there is no need to open the motor housing, it is more convenient to adjust the air gap. By replacing the air gap adjustment structure with different thicknesses and adjusting the distance between the outer wall of the housing and the bearing cover 13, precise control of the air gap can be achieved.

[0079] On the other hand, the outer diameter of the bearing cover 13 is larger than the inner diameter of the through hole, which is equivalent to increasing the outer diameter of the bearing cover 13 , which can effectively prevent the bearing support 12 from falling off from the housing and ensure the stability and reliability of the bearing support 12 .

[0080] In some embodiments, the air gap adjustment structure is removably positioned between the outer wall of the housing and the bearing cover 13 by the second locking assembly 8. The second locking assembly 8 includes a plurality of screws. A plurality of second connecting holes are circumferentially arranged on the bearing cover 13 and the stator end cover 5, respectively. The bearing cover 13 and the stator end cover 5 are connected by a plurality of screws, and the screws pass through the second connecting holes of the bearing cover 13 and the second connecting holes of the stator end cover 5. In this embodiment, the design of the second locking assembly 8 allows the air gap adjustment structure to be quickly disassembled and reinstalled, which is convenient for rapid adjustment under different working conditions. The second locking assembly 8 can ensure that the air gap adjustment structure is firmly fixed in the adjusted position to avoid displacement during the operation of the motor, thereby ensuring the stability and accuracy of the air gap. In addition, by adjusting the tightness of the second locking assembly 8, it is possible to achieve precise control of small changes in the air gap and improve the adjustment accuracy.

[0081] In some embodiments, the air gap adjustment structure includes at least one air gap gasket 6. In addition to adjusting the air gap between the rotor disk assembly 21 and the stator 3, the air gap gasket 6 can also seal the junction between the bearing cover 13 and the outer wall of the housing to prevent foreign matter from entering the motor housing.

[0082] In some embodiments, the housing includes a rotor end cover 4 and a stator end cover 5. The stator 3 and the bearing support 12 of the bearing assembly 1 are arranged on the stator end cover 5. The rotor end cover 4 is connected to the stator end cover 5 and is surrounded by the stator end cover 5 to form a cavity structure, and the rotating shaft 22 movably passes through the rotor end cover 4.

[0083] The specific process of adjusting the air gap of the above motor is as follows:

[0084] Turn off the motor power supply and ensure that the motor is in a powered-off state.

[0085] Use a suitable tool (such as a screwdriver) to loosen the second locking assembly 8 and the fourth locking assembly 10. Remove the bearing cover 13 from the housing and the bearing support 12, and remove the air gap adjustment structure.

[0086] According to the required air gap size, select an air gap adjustment structure that meets the requirements. Place the air gap adjustment structure at the intersection of the outer wall of the housing and the bearing cover 13. Tighten the fourth locking assembly 10 to position the bearing cover 13 on the bearing support 12; tighten the second locking assembly 8 to lock and position the bearing cover 13 and the air gap adjustment structure on the housing.

[0087] Turn on the power, start the motor, observe the running status of the motor, and confirm whether the air gap adjustment achieves the expected effect.

[0088] Example 3

[0089] This embodiment provides a motor, combined with Figures 7 to 9As shown, it includes a housing, a stator 3, a rotor 2 and an air gap adjustment structure. The housing is used to provide an accommodation space for the stator 3 and the rotor 2. The stator 3 is arranged inside the housing. The rotor 2 is arranged inside the housing through the bearing assembly 1 and is coaxially arranged with the stator 3. The rotor 2 includes a rotor disk assembly 21 and a rotating shaft 22 connected therebetween, and an air gap is provided between the rotor disk assembly 21 and the stator 3. More specifically, the rotor disk assembly 21 includes a rotor disk body 211 and a rotor core 212, and the stator 3 includes a stator core and a winding, and the air gap is between the rotor core 212 and the stator core. The air gap adjustment structure is arranged between the rotor disk assembly 21 and the rotating shaft 22, and the air gap adjustment structure is used to adjust the axial position of the rotor disk assembly 21 to achieve the adjustment of the air gap.

[0090] The bearing assembly 1 includes a bearing support 12 and a bearing 11. The bearing support 12 is arranged inside the housing, and at least one bearing accommodating cavity is arranged inside the bearing support 12. The bearing support 12 in this embodiment is arranged separately from the housing or connected to the housing in one piece. At least one bearing 11 is arranged, and the bearing 11 is arranged in the bearing accommodating cavity, that is, the outer ring of the bearing is embedded in the bearing accommodating cavity, and the bearing 11 is rotatably connected to the rotating shaft 22, that is, the rotating shaft 22 is embedded in the inner ring of the bearing.

[0091] The housing includes a rotor end cover 4 and a stator end cover 5. The stator 3 and the bearing support 12 of the bearing assembly 1 are arranged on the stator end cover 5. The rotor end cover 4 is connected to the stator end cover 5 and is surrounded by the stator end cover 5 to form a cavity structure, and the rotating shaft 22 movably passes through the rotor end cover 4.

[0092] In some special cases, when the bearing support 12 and the stator end cover 5 cannot be separated, the above motor structure can be used to adjust the air gap.

[0093] The difference between this embodiment and Embodiment 1 and Embodiment 2 is that the specific installation position of the air gap adjustment structure in this embodiment is different from that in Embodiment 1 and Embodiment 2. More specifically, the rotor disk assembly 21 of this embodiment is separately connected to the rotating shaft 22. A groove 24 is provided at one end of the rotor disk assembly 21 close to the bearing assembly 1, and a second convex plate 23 is provided on the outer side wall of the rotating shaft 22, and the second convex plate 23 is accommodated in the groove 24. The air gap adjustment structure is arranged between the second convex plate 23 and the groove 24.

[0094] In this embodiment, the rotating shaft 22 is positioned in the bearing assembly 1, and the axial position of the bearing assembly 1 remains unchanged, so that the axial position of the rotating shaft 22 remains fixed. When the thickness of the air gap adjustment structure changes, the axial position of the rotor disk assembly 21 changes accordingly, thereby achieving the adjustment of the air gap. In this embodiment, when the air gap adjustment structure is replaced, only the rotor disk assembly 21 needs to be disassembled, which is very convenient and will not cause any impact on the bearing assembly 1.

[0095] In some embodiments, the air gap adjustment structure is removably positioned between the second convex plate 23 and the rotor disk assembly 21 through the third locking assembly 9. The third locking assembly 9 includes a plurality of screws. A plurality of third connecting holes are circumferentially arranged on the second convex plate 23 and the rotor disk body 211, respectively. The second convex plate 23 and the rotor disk body 211 are connected by a plurality of screws, and the screws pass through the third connecting holes of the second convex plate 23 and the third connecting holes of the rotor disk body 211. In this embodiment, the design of the third locking assembly 9 enables the air gap adjustment structure to be quickly disassembled and reinstalled, which is convenient for rapid adjustment under different working conditions. The third locking assembly 9 can ensure that the air gap adjustment structure is firmly fixed in the adjusted position to avoid displacement during the operation of the motor, thereby ensuring the stability and accuracy of the air gap. In addition, by adjusting the degree of tightening of the third locking assembly 9, it is possible to accurately control the slight changes in the air gap and improve the adjustment accuracy.

[0096] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A motor, comprising: case; A stator (3), the stator (3) being arranged inside the housing; A rotor (2), the rotor (2) being arranged inside the housing via a bearing assembly (1) and being coaxially arranged with the stator (3), the rotor (2) comprising a rotor disk assembly (21) and a rotating shaft (22), an air gap being provided between the rotor disk assembly (21) and the stator (3); Characterized in that the motor also includes an air gap adjustment structure; The bearing assembly (1) is separately connected to the housing, and an air gap adjustment structure is provided between the bearing assembly (1) and the housing, wherein the air gap adjustment structure adjusts the axial position of the bearing assembly (1), the rotating shaft (22) and the rotor disk assembly (21) to adjust the size of the air gap; And / or, the rotor disk assembly (21) is separately connected to the rotating shaft (22), and the air gap adjustment structure is provided between the rotor disk assembly (21) and the rotating shaft (22), and the air gap adjustment structure adjusts the axial position of the rotor disk assembly (21) to adjust the size of the air gap.

2. The motor according to claim 1, characterized in that The bearing assembly (1) comprises: A bearing mounting structure is disposed separately from the housing, and at least one bearing accommodating cavity is disposed inside the bearing mounting structure; at least one bearing (11), the bearing (11) being disposed in the bearing accommodating cavity, the bearing (11) being rotatably connected to the rotating shaft (22); When the air gap adjustment structure is provided between the bearing assembly (1) and the housing, the air gap adjustment structure is provided between the bearing mounting structure and the housing.

3. The motor according to claim 2, characterized in that The housing is provided with a through hole; the bearing mounting structure comprises: A bearing support (12), one end of the bearing support (12) is located inside the housing, and the other end of the bearing support (12) is movably extended out of a through hole of the housing; A bearing cover (13) connected to the other end of the bearing support (12); Wherein, the air gap adjustment structure is provided between the bearing support (12) and the housing, or the air gap adjustment structure is provided between the outer wall of the housing and the bearing cover (13).

4. The motor according to claim 3, characterized in that When the air gap adjustment structure is provided between the bearing support (12) and the housing, a first convex plate (14) is extended from the outer side wall of the bearing support (12), and the air gap adjustment structure is provided between the housing and the first convex plate (14).

5. The motor according to claim 4, characterized in that The air gap adjustment structure is detachably positioned between the inner wall of the housing and the first convex plate (14) via a first locking assembly (7).

6. The motor according to claim 3, characterized in that When the air gap adjustment structure is provided between the outer wall of the housing and the bearing cover (13), the outer diameter of the bearing cover (13) is greater than the inner diameter of the through hole, and the air gap adjustment structure is provided between the outer wall of the housing and the bearing cover (13).

7. The motor according to claim 6, characterized in that The air gap adjustment structure is detachably positioned between the outer wall of the housing and the bearing cover (13) via a second locking assembly (8).

8. The motor according to claim 1, characterized in that When the air gap adjustment structure is provided between the rotor disk assembly (21) and the rotating shaft (22), a groove (24) is provided at one end of the rotor disk assembly (21) close to the bearing assembly (1), a second convex plate (23) is provided on the outer side wall of the rotating shaft (22), the second convex plate (23) is accommodated in the groove (24), and the air gap adjustment structure is provided between the second convex plate (23) and the groove (24).

9. The motor according to claim 8, characterized in that The air gap adjustment structure is detachably positioned between the second convex plate (23) and the rotor disk assembly (21) via a third locking assembly (9).

10. The motor according to any one of claims 1 to 9, characterized in that: The air gap adjustment structure comprises at least one air gap gasket (6); And / or, the housing comprises a rotor end cover (4) and a stator end cover (5), the stator (3) and the bearing assembly (1) are arranged on the stator end cover (5), the rotor end cover (4) is connected to the stator end cover (5) and is arranged together with the stator end cover (5) to form a cavity structure, and the rotating shaft (22) movably passes through the rotor end cover (4).

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