Modular motor module and multi-stage motor

Abstract

The application discloses a modular motor module and a multi-stage motor. The modular motor module comprises a shell, first bearings and adjusting components arranged on both sides of the shell, the adjusting components are configured to adjust the first bearings to move on the shell along an axis, a stator assembly comprising a stator framework and stator coils, the stator coils are arranged on the stator framework, a rotor assembly comprising a rotor framework, a rotor rotating disc and permanent magnets, the rotor rotating disc is arranged on the rotor framework, and the permanent magnets are arranged on the rotor rotating disc, an electromagnetic clutch comprising first and second half clutches, and an output shaft. The application realizes convenient motor maintenance and meets the requirement that other motors do not be affected during the maintenance process, so as to meet the use requirement of work continuity.

Description

Technical Field

[0001] This invention relates to the field of motor technology, and in particular to a modular motor module and a multi-stage motor. Background Technology

[0002] Axial flux permanent magnet motors are widely used in electric vehicles, wind power generation, and aerospace due to their high power density and compact axial dimensions. In traditional axial flux motors, the rotor and output shaft are typically rigidly connected. However, during operation, multiple motors may coaxially output power. When one motor fails and requires repair, the entire series-connected multi-stage motor must be stopped, resulting in continuous operation interruption due to repairing a single motor. Therefore, designing a motor technology that facilitates maintenance while maintaining operational continuity is the technical problem this invention aims to solve. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a modular motor module and a multi-stage motor, so as to facilitate motor maintenance and meet the requirement that the normal operation of other motors is not affected during the maintenance process, so as to meet the requirements of continuous operation.

[0004] The technical solution provided by this invention is a modular motor module, comprising: The housing has a first bearing and an adjusting component on each of its two sides, the adjusting component being configured to adjust the first bearing to move along an axis on the housing; A stator assembly, comprising a stator frame and stator coils, wherein the stator coils are disposed on the stator frame; A rotor assembly, wherein the rotor includes a rotor frame, a rotor disk and a permanent magnet, the rotor disk being disposed on the rotor frame and the permanent magnet being disposed on the rotor disk; An electromagnetic clutch, comprising a first half-clutch and a second half-clutch. Output shaft; The stator assembly, the rotor assembly, and the electromagnetic clutch are disposed in the housing. The stator frame is fixedly disposed in the housing. The rotor frame is rotatably disposed in the housing. The second half-clutch is fixedly disposed on the rotor frame. The output shaft is disposed on the first bearing. The first half-clutch is fixedly disposed on the output shaft.

[0005] Furthermore, the housing includes two end plates and an annular surrounding plate, the annular surrounding plate being located between the two end plates; The two end plates form a mounting cavity between the annular surrounding plate, and the stator assembly, rotor assembly and electromagnetic clutch are disposed in the mounting cavity.

[0006] Furthermore, the end plate is provided with a shaft hole, the first bearing is slidably disposed in the shaft hole, and the adjusting component is disposed on the end plate.

[0007] Furthermore, a positioning surface is provided at one end of the output shaft, and a positioning sleeve is provided at the other end of the output shaft, with the inner end face of the positioning sleeve abutting against the first half-clutch. One of the bearings rests against the positioning surface, and the other first bearing rests against the outer end face of the positioning sleeve.

[0008] Furthermore, the shaft hole is a stepped hole, the shaft hole includes a first hole segment and a second hole segment, the diameter of the first hole segment is larger than that of the second hole segment, and the first hole segment is arranged outside the second hole segment; The first bearing is slidably disposed in the second bore section, and the adjusting component is disposed in the corresponding first bore section and abuts against the corresponding first bearing.

[0009] Furthermore, the adjusting component is an adjusting ring, and the inner surface of the adjusting ring is provided with an annular protrusion, which extends into the second hole section and abuts against the corresponding first bearing.

[0010] Furthermore, the first hole section is provided with an internal thread, the outer circumference of the adjusting component is provided with an external thread, and the adjusting component is threadedly connected to the first hole section; Alternatively, a stepped surface is formed between the first hole segment and the second hole segment, and multiple threaded holes are provided on the stepped surface; multiple through holes are provided on the adjusting component, and bolts are provided in the through holes, with the bolts threadedly connected to the corresponding threaded holes.

[0011] Furthermore, the end plate is provided with an annular boss, which is arranged around the shaft hole, and a second bearing is sleeved on the annular boss; the rotor skeleton is disposed on the second bearing.

[0012] Furthermore, the rotor frame is provided with rotor discs on both sides, and the stator frame is located between the two rotor discs.

[0013] Furthermore, the outer casing is also provided with a wiring port, which is arranged on the outside of the rotor disc; And / or, the housing is further provided with a measuring hole, which is arranged on the outside of the rotor disc.

[0014] One embodiment of this application also provides a multi-stage motor, which further includes the above-mentioned modular motor modules, wherein the output shafts of two adjacent modular motor modules are axially movable together via a coupling.

[0015] Compared with the prior art, the advantages and positive effects of the present invention are as follows: The modular motor module and multi-stage motor provided by the present invention, by setting an electromagnetic clutch in the housing, with the first half clutch of the electromagnetic clutch set on the output shaft and the second half clutch set on the rotor frame, in use, when power needs to be output through the modular motor module, the first half clutch and the second half clutch in the electromagnetic clutch engage so that the rotor assembly provides power to the output shaft. When maintenance is required, the first half clutch and the second half clutch disengage. In this way, even if the output shaft is connected to the output shaft of other modular motor modules for power transmission, there is no need to stop the operation of other modular motor modules during maintenance, realizing convenient motor maintenance and meeting the requirement of not affecting the normal operation of other motors during maintenance, thus meeting the requirement of continuous operation.

[0016] More importantly, since the output shaft of the modular motor module is connected to other output shafts during maintenance, an adjustment component is also provided on the housing to adjust the position of the first bearing in order to facilitate the adjustment of the air gap between the first half clutch and the second half clutch after maintenance is completed. This allows for the adjustment of the distance between the first half clutch and the second half clutch on the output shaft, thus enabling online clutch adjustment after maintenance is completed. This reduces the difficulty of maintenance while meeting the requirements of continuous operation. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is one of the structural schematic diagrams of the modular motor module of the present invention; Figure 2 This is the second structural schematic diagram of the modular motor module of the present invention; Figure 3 for Figure 2 Sectional view along line AA; Figure 4 for Figure 3 A magnified view of a portion of region B in the middle; Figure 5 for Figure 3 A magnified view of a portion of region C in the middle; Figure 6 This is an assembly diagram of the stator assembly and the annular surrounding plate in the modular motor module of the present invention; Figure 7 This is an assembly diagram of the rotor assembly, electromagnetic clutch, and output shaft in the modular motor module of the present invention; Figure 8 This is a schematic diagram of the structure of the multi-stage motor of the present invention.

[0019] Figure label: 1. Outer casing; 11. First bearing; 12. Adjustment component; 13. End plate; 14. Annular surrounding plate; 15. Second bearing; 16. Wiring port; 17. Measuring hole; 121. Annular protrusion; 131. Shaft hole; 132. Annular boss; 1311, First borehole section; 1312, Second borehole section; 2. Stator assembly; 21. Stator frame; 22. Stator coil; 3. Rotor assembly; 31. Rotor frame; 32. Rotor disc; 33. Permanent magnet; 4. Electromagnetic clutch; 41. First half clutch; 42. Second half clutch; 5. Output shaft; 51. Positioning surface; 52. Positioning sleeve; Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] like Figures 1-7 As shown, the modular motor module in this embodiment includes: The outer casing 1 has a first bearing 11 and an adjusting component 12 respectively provided on both sides of the outer casing 1. The adjusting component 12 is configured to adjust the first bearing 11 to move along the axis on the outer casing 1. Stator assembly 2, the stator assembly 2 includes a stator frame 21 and a stator coil 22, the stator coil 22 being disposed on the stator frame 21; The rotor assembly 3 includes a rotor frame 31, a rotor disk 32, and a permanent magnet 33. The rotor disk 32 is disposed on the rotor frame 31, and the permanent magnet 33 is disposed on the rotor disk 32. Electromagnetic clutch 4, which includes a first half-clutch 41 and a second half-clutch 42; Output shaft 5; The stator assembly 2, the rotor assembly 3, and the electromagnetic clutch 4 are disposed in the housing 1. The stator frame 21 is fixedly disposed in the housing 1. The rotor frame 31 is rotatably disposed in the housing 1. The second half-clutch 42 is fixedly disposed on the rotor frame 31. The output shaft 5 is disposed on the first bearing 11. The first half-clutch 41 is fixedly disposed on the output shaft 5.

[0022] Specifically, the outer casing 1 has first bearings 11 on both sides to meet the installation requirements of the output shaft 5. The first half-clutch 41 on the output shaft 5 and the second half-clutch 42 on the rotor frame 31 can cooperate with each other to achieve the clutch function.

[0023] In practical use, multiple modular motor modules are connected in series, with each conveyor shaft connected sequentially for power transmission. When one of the modular motor modules malfunctions and requires maintenance, the first half-clutch 41 and the second half-clutch 42 of the electromagnetic clutch 4 in the malfunctioning module disengage, disconnecting the output shaft 5 from the rotor assembly 3. This allows operators to perform online maintenance on the stator assembly 2, rotor assembly 3, or other components of the malfunctioning modular motor module while the output shaft 5 continues to rotate with the other output shafts 5.

[0024] After the operator completes the maintenance operation online, the air gap between the first half clutch 41 and the second half clutch 42 may become too large or too small due to the change in the relative position between them. At this time, the position of the output shaft 5 in the axial direction can be adjusted by adjusting the first bearing 11 on the corresponding side through the adjusting component 12, so as to accurately adjust the air gap between the first half clutch 41 and the second half clutch 42 and ensure that the electromagnetic clutch 4 can operate stably and reliably.

[0025] This allows for online repair of faulty modular motor modules, while also ensuring the reliable operation of the electromagnetic clutch 4 within the repaired modular motor module.

[0026] The electromagnetic clutch 4 is a conventional clutch in the prior art; for example, a jaw clutch electromagnetic clutch 4 can be used. No restrictions are imposed here.

[0027] In one embodiment, the outer casing 1 includes two end plates 13 and an annular surrounding plate 14, the annular surrounding plate 14 being located between the two end plates 13; The two end plates 13 form a mounting cavity between the annular surrounding plate 14, and the stator assembly 2, rotor assembly 3 and electromagnetic clutch 4 are disposed in the mounting cavity.

[0028] Specifically, to facilitate the disassembly of the outer casing 1 for maintenance of internal components, the outer casing 1 includes two end plates 13 and an annular surrounding plate 14 disposed between the two end plates 13. The end plates 13 are fixedly connected to the annular surrounding plate 14 by screws or bolts. When maintenance is required, the corresponding end plate 13 can be opened to expose the internal components inside the outer casing 1, thereby facilitating maintenance operations.

[0029] Furthermore, the end plate 13 is provided with a shaft hole 131, the first bearing 11 is slidably disposed in the shaft hole 131, and the adjusting component 12 is disposed on the end plate 13.

[0030] Specifically, the adjusting component 12 is disposed on the end plate 13 to adjust the first bearing 11 so that the first axis can move along the axial direction. The first bearing 11 is installed in the shaft hole 131. Driven by the adjusting component 12, the first bearing 11 can move in the shaft hole 131. By adjusting the moving distance of the first bearing 11, the air gap between the first half clutch 41 and the second half clutch 42 can be precisely adjusted.

[0031] Furthermore, a positioning surface 51 is provided at one end of the output shaft 5, and a positioning sleeve 52 is provided at the other end of the output shaft 5, with the inner end face of the positioning sleeve 52 abutting against the first half clutch 41. One of the bearings rests against the positioning surface 51, and the other first bearing 11 rests against the outer end face of the positioning sleeve 52.

[0032] Specifically, in order to reliably drive the output shaft 5 to move along its axial direction through the first bearing 11, a positioning surface 51 is provided at one end of the output shaft 5 to abut against the first bearing 11 on the corresponding side. The first half clutch 41 is installed at the other end of the output shaft 5, and then a positioning sleeve 52 is fitted on it to meet the requirements of abutting against the first bearing 11 on the other side for positioning and installation.

[0033] In this way, during the air gap adjustment process, the two first bearings 11 moving in the same direction can drive the output shaft 5 to move smoothly and precisely adjust the air gap between the first half clutch 41 and the second half clutch 42.

[0034] Furthermore, the shaft hole 131 is a stepped hole, and the shaft hole 131 includes a first hole segment 1311 and a second hole segment 1312. The diameter of the first hole segment 1311 is larger than that of the second hole segment 1312, and the first hole segment 1311 is arranged outside the second hole segment 1312. The first bearing 11 is slidably disposed in the second hole section 1312, and the adjusting component 12 is disposed in the corresponding first hole section 1311 and abuts against the corresponding first bearing 11.

[0035] Specifically, in order to achieve a compact design of the overall structure and meet the requirements of convenient maintenance, the shaft hole 131 adopts a stepped hole. The diameter of the first hole section 1311 is larger for installing the adjustment component 12, and the diameter of the second hole section 1312 meets the installation requirements of the first bearing 11.

[0036] Furthermore, the adjusting component 12 is an adjusting ring, and the inner surface of the adjusting ring is provided with an annular protrusion 121, which extends into the second hole section 1312 and abuts against the corresponding first bearing 11.

[0037] Specifically, in order to apply balanced pressure to the first bearing 11 so that the output shaft 5 is positioned and assembled on the two first bearings 11 by the positioning tool and the positioning sleeve 52, an annular protrusion 121 is provided on the inner surface of the adjusting component 12. The annular protrusion 121 can abut against the first bearing 11 so as to apply a smooth pressure to the first bearing 11 through the annular protrusion 121.

[0038] The first bore 1311 has an internal thread, and the outer circumference of the adjusting component has an external thread. The adjusting component 12 is threadedly connected to the first bore 1311. Specifically, the adjusting component 12 is installed in the first bore 1311 by a threaded connection. By rotating the adjusting component 12, the position of the corresponding first bearing 11 is adjusted to precisely adjust the air gap between the first half-clutch 41 and the second half-clutch 42.

[0039] Alternatively, a stepped surface is formed between the first hole segment 1311 and the second hole segment 1312, and multiple threaded holes are provided on the stepped surface; multiple through holes are provided on the adjusting component 12, and bolts are provided in the through holes, with the bolts threaded into the corresponding threaded holes. Specifically, the position of the first bearings 11 on both sides is adjusted by adjusting the tightness of the bolts on the adjusting components 12 on both sides, thereby adjusting the axial position of the output shaft 5 to precisely adjust the air gap between the first half clutch 41 and the second half clutch 42.

[0040] In one embodiment, an annular boss 132 is provided on the end plate 13, the annular boss 132 is arranged around the shaft hole 131, and a second bearing 15 is sleeved on the annular boss 132; the rotor frame 31 is disposed on the second bearing 15.

[0041] Specifically, in order to ensure that the rotor frame 31 rotates smoothly in the housing 1 and to meet the installation requirements of the output shaft 5 during online maintenance, an annular boss 132 is provided on the inner surface of the end plate 13 to install the second bearing 15. The rotor frame 31 has an overall cylindrical structure and is installed on the second bearings 15 on both sides.

[0042] Furthermore, the rotor frame 31 is provided with rotor discs 32 on both sides, and the stator frame 21 is located between the two rotor discs 32.

[0043] Specifically, rotor disks 32 are respectively provided on both sides of the rotor frame 31 to mount permanent magnets 33. In this way, the stator assembly 2 is arranged between the rotor disks 32 on both sides, so that the magnetic force generated between the rotor disks 32 and the stator assembly 2 is evenly transmitted to the rotor frame 31, which is more conducive to driving the rotor assembly 3 to rotate smoothly.

[0044] In addition, the stator assembly 2 is mounted on the annular baffle 14. For example, the stator assembly 2 can be mounted on the annular baffle 14 using a potting method in conventional technology, which will not be limited or elaborated here.

[0045] Furthermore, the outer casing 1 is also provided with a wiring port 16, which is arranged on the outside of the rotor disc 32.

[0046] Specifically, in order to facilitate wiring with the stator assembly 2 and electromagnetic clutch 4 inside the housing 1, the housing 1 is also provided with a wiring port 16, which allows the cables from the external junction box to extend into the interior of the housing 1 and connect with the stator assembly 2 and electromagnetic clutch 4.

[0047] In another embodiment, the housing 1 is further provided with a measuring hole 17, which is arranged on the outside of the rotor disk 32.

[0048] Specifically, when assembling the rotor assembly 3 or repairing the stator assembly 2 in the early stage or later stage, if it is necessary to adjust the distance between the rotor turntable 32 and the stator frame 21, in order to prevent collisions, an isolation pad (not shown) can be inserted into the housing 1 through the measuring hole 17 to separate the rotor turntable 32 and the stator frame 21. In this way, collision damage caused by the magnetic pull between the permanent magnet 33 and the stator assembly 2 during the maintenance and assembly process can be avoided.

[0049] Furthermore, after the complete assembly and maintenance operation, the isolation gasket can be removed from the wiring port 16, which is more conducive to online maintenance operations and ensures the convenience and reliability of maintenance operations.

[0050] After assembly, tools such as plug gauges can be used to check the air gap size and uniformity through measuring hole 17 without disassembling the machine.

[0051] like Figure 8 As shown, one embodiment of this application also provides a multi-stage motor, which further includes the above-mentioned modular motor modules, wherein the output shafts 5 of two adjacent modular motor modules are axially movable together through a coupling.

[0052] Specifically, the output shafts 5 of two adjacent modular motor modules can be connected by a coupling that allows movement in the axial direction. For example, a gear coupling can be used to meet the power transmission requirements of the output shaft 5, while also meeting the requirements for axial movement adjustment of the output shaft 5 during maintenance of the corresponding modular motor module.

[0053] Compared with the prior art, the advantages and positive effects of the present invention are as follows: The modular motor module and multi-stage motor provided by the present invention, by setting an electromagnetic clutch 4 in the housing 1, with the first half clutch 41 of the electromagnetic clutch 4 set on the output shaft 5 and the second half clutch 42 set on the rotor frame 31, in use, when power needs to be output through the modular motor module, the first half clutch 41 and the second half clutch 42 in the electromagnetic clutch 4 engage so that the rotor assembly 3 provides power to the output shaft 5, and when maintenance is required, the first half clutch 41 and the second half clutch 42 disengage from each other. In this way, even if the output shaft 5 is connected to the output shaft 5 of other modular motor modules for power transmission, there is no need to stop the operation of other modular motor modules during maintenance, realizing convenient motor maintenance and meeting the requirement of not affecting the normal operation of other motors during maintenance, thus meeting the requirement of continuous operation.

[0054] More importantly, since the output shaft 5 of the modular motor module in the maintenance state is connected to other output shafts 5, in order to facilitate the adjustment of the air gap between the first half clutch 41 and the second half clutch 42 after maintenance, the housing 1 is also provided with an adjustment component 12 to adjust the position of the first bearing 11, thereby adjusting the distance between the first half clutch 41 and the second half clutch 42 on the output shaft 5. This allows for online adjustment of the clutch after maintenance, reducing the difficulty of maintenance while meeting the requirements of work continuity.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A modular motor module, characterized in that, include: The housing has a first bearing and an adjusting component on each of its two sides, the adjusting component being configured to adjust the first bearing to move along an axis on the housing; A stator assembly, comprising a stator frame and stator coils, wherein the stator coils are disposed on the stator frame; A rotor assembly, wherein the rotor includes a rotor frame, a rotor disk and a permanent magnet, the rotor disk being disposed on the rotor frame and the permanent magnet being disposed on the rotor disk; An electromagnetic clutch, comprising a first half-clutch and a second half-clutch. Output shaft; The stator assembly, the rotor assembly, and the electromagnetic clutch are disposed in the housing. The stator frame is fixedly disposed in the housing. The rotor frame is rotatably disposed in the housing. The second half-clutch is fixedly disposed on the rotor frame. The output shaft is disposed on the first bearing. The first half-clutch is fixedly disposed on the output shaft.

2. The modular motor module according to claim 1, characterized in that, The outer casing includes two end plates and an annular surrounding plate, the annular surrounding plate being located between the two end plates; The two end plates form a mounting cavity between the annular surrounding plate, and the stator assembly, rotor assembly and electromagnetic clutch are disposed in the mounting cavity.

3. The modular motor module according to claim 2, characterized in that, The end plate is provided with a shaft hole, the first bearing is slidably disposed in the shaft hole, and the adjusting component is disposed on the end plate.

4. The modular motor module according to claim 3, characterized in that, One end of the output shaft is provided with a positioning surface, and the other end of the output shaft is provided with a positioning sleeve, the inner end face of the positioning sleeve abutting against the first half clutch. One of the bearings rests against the positioning surface, and the other first bearing rests against the outer end face of the positioning sleeve.

5. The modular motor module according to claim 3, characterized in that, The shaft hole is a stepped hole, which includes a first hole segment and a second hole segment. The diameter of the first hole segment is larger than that of the second hole segment, and the first hole segment is arranged outside the second hole segment. The first bearing is slidably disposed in the second bore section, and the adjusting component is disposed in the corresponding first bore section and abuts against the corresponding first bearing.

6. The modular motor module according to claim 5, characterized in that, The adjusting component is an adjusting ring, and the inner surface of the adjusting ring is also provided with an annular protrusion. The annular protrusion extends into the second hole section and abuts against the corresponding first bearing.

7. The modular motor module according to claim 5, characterized in that, The first hole section is provided with an internal thread, and the outer circumference of the adjusting component is provided with an external thread. The adjusting component is threadedly connected to the first hole section. Alternatively, a stepped surface is formed between the first hole segment and the second hole segment, and multiple threaded holes are provided on the stepped surface; multiple through holes are provided on the adjusting component, and bolts are provided in the through holes, with the bolts threadedly connected to the corresponding threaded holes.

8. The modular motor module according to claim 3, characterized in that, An annular boss is provided on the end plate, the annular boss is arranged around the shaft hole, and a second bearing is sleeved on the annular boss; the rotor skeleton is set on the second bearing.

9. The modular motor module according to claim 1, characterized in that, The rotor frame has rotor discs on both sides, and the stator frame is located between the two rotor discs.

10. A multi-cascaded motor, characterized in that, It also includes a plurality of modular motor modules as described in any one of claims 1-9, wherein the output shafts of two adjacent modular motor modules are axially movable together via a coupling.

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