CN210327181U - Double-rotor motor rotating shaft structure - Google Patents
Double-rotor motor rotating shaft structure Download PDFInfo
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- CN210327181U CN210327181U CN201921716152.6U CN201921716152U CN210327181U CN 210327181 U CN210327181 U CN 210327181U CN 201921716152 U CN201921716152 U CN 201921716152U CN 210327181 U CN210327181 U CN 210327181U
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Abstract
The utility model discloses a birotor motor pivot structure, including the rotor pivot, be provided with rotor step, bearing step, the rotary transformer rotor step, shaft coupling step, rotor keyway, rotary transformer rotor keyway, rotor jump ring groove, bearing jump ring groove, rotary transformer jump ring groove, shaft coupling shelves, axle seal shelves, rotor shelves, bearing shelves, rotary transformer rotor shelves, axle head central screw hole in the rotor pivot, rotor step, rotary transformer rotor step, shaft coupling step are the axial spacing step of rotor, bearing, rotary transformer rotor respectively, shaft coupling shelves, axle seal shelves, rotor shelves, bearing shelves, rotary transformer rotor shelves are the mounted position of the bloated cover shaft coupling of installation, axle seal, rotor, bearing, rotary transformer rotor respectively; the utility model has the advantages of simple structure, convenient processing and reliable quality because the rotating shaft is of a step shaft structure; can directly realize reliable installation through simple mounting means, production convenient operation reduces manufacturing cost.
Description
Technical Field
The utility model relates to a pivot structure specifically is a birotor motor pivot structure, belongs to permanent-magnet machine structure application technical field.
Background
In recent years, with the high requirements of the new energy automobile industry on low power consumption of a driving motor. In order to more fully improve the wide high-efficiency area characteristic of the permanent magnet synchronous motor and improve the driving range of the pure electric vehicle. The birotor coaxial motor gradually enters the field of vision of a driving motor of a new energy automobile.
The dual-rotor coaxial motor integrates two rotors and other structures on the same rotating shaft, and outputs power coaxially, and the rotating shaft mechanism of the dual-rotor motor in the current industry is complex and various. The common axle sleeve location round nut that has of birotor is fixed, adopts two rotary transformer rotor structures to gather the relative stator's of two rotors electric angle, and the mode of bolt-up is adopted in the rotary transformer rotor location. The rotor is fixed and needs to be processed the screw thread in the pivot, and the fixed screw hole that needs to be processed at the axle tail of rotary transformer rotor, position sensor function coincidence. The rotating shaft is complex in structure, multiple in production procedures, and increased in working procedures, working hours and material waste, and meanwhile, in the motor assembling process, the structure is complex, the working procedures are more, the complexity of the system is increased, and certain hidden danger is brought to the reliability of the system.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an aim at just in order to solve current pivot structure, the rotor is fixed to be needed in the pivot to process the screw thread, and the fixed screw hole that needs of rotary transformer rotor is at the axle tail processing screw hole, and the position sensor function coincides. The rotating shaft structure is complex, the production process is multiple, the processes are increased, the working time and the material waste are increased, meanwhile, in the motor assembling process, the structure is complex, the processes are more, the complexity of the system is increased, and the problem of certain hidden danger is brought to the reliability of the system, so that the rotating shaft structure of the double-rotor motor is provided.
The purpose of the utility model can be realized by the following technical scheme: a dual-rotor motor rotating shaft structure comprises a rotor rotating shaft, wherein the rotor rotating shaft is sequentially provided with a central threaded hole, a coupling gear, a coupling step, a shaft sealing gear, a first bearing snap spring groove, a first bearing gear, a first bearing step, a first rotor snap spring groove, a first rotor key groove, a first rotor gear, a first rotor step, a second rotor gear, a second rotor key groove, a second rotor snap spring groove, a second bearing step, a second bearing gear, a second bearing snap spring groove, a rotary transformer rotor step, a rotary transformer rotor gear, a rotary transformer rotor key groove and a rotary transformer snap spring groove from a shaft head to a shaft tail;
the central threaded hole is arranged on the front end face of the shaft coupling gear, the rear end of the shaft coupling gear is provided with a shaft sealing gear, a shaft coupling step is formed between the shaft coupling gear and the shaft sealing gear, the rear end of the shaft sealing gear is provided with a first bearing gear, a first bearing snap spring groove is arranged on the outer surface of the first bearing gear, the rear end of the first bearing gear is provided with a first rotor gear, the first rotor snap spring groove and a first rotor key groove are both arranged on the outer surface of the first rotor gear, the rear end of the first rotor gear is the thickest shaft body of a rotor rotating shaft, a first rotor step is formed between the first rotor gear and the thickest shaft body, the second rotor gear is arranged on the rear end of the thickest shaft body, a second rotor step is formed between the second rotor gear and the thickest shaft body, the second rotor snap spring groove and a second rotor key groove are both arranged on the outer surface of the second rotor gear, and the rear end of the second rotor gear is provided with a second bearing gear, a second bearing step is formed between the second rotor gear and the second bearing gear, a second bearing snap spring groove is formed in the outer surface of the second bearing gear, a transition shaft gear is arranged at the rear end of the second bearing gear, a rotary transformer rotor gear is arranged at the rear end of the transition shaft gear, a rotary transformer rotor step is formed between the rotary transformer rotor gear and the transition shaft gear, and a rotary transformer rotor key groove and a rotary transformer rotor snap spring groove are formed in the outer surface of the rotary transformer rotor step;
the shaft coupling gear is a rotor rotating shaft and expansion sleeve shaft coupling assembling surface, the shaft sealing gear is a rotor rotating shaft and framework oil seal sealing surface, the first bearing gear is a rotor rotating shaft and a first bearing assembling surface, the first rotor gear is a rotor rotating shaft and a first rotor assembling surface, the second rotor gear is a rotor rotating shaft and second rotor assembling surface, the second bearing gear is a rotor rotating shaft and second bearing assembling surface, the rotary transformer rotor gear is a rotor rotating shaft and rotary transformer rotor assembling surface, the first bearing snap spring is clamped in the first bearing snap spring groove, the first rotor clamp spring is clamped inside the first rotor clamp spring groove, the second rotor clamp spring is clamped inside the second rotor clamp spring groove, the second bearing clamp spring is clamped inside the second bearing clamp spring groove, and the rotary transformer rotary clamp spring is clamped inside the rotary transformer rotary clamp spring groove.
Preferably, the central threaded hole is used for temporarily mounting an eye bolt for hoisting.
Preferably, the first rotor step, the second rotor step and the rotor rotating shaft are of an integrated structure.
Preferably, the first rotor key groove and the second rotor key groove are positioning grooves which are axially collinear in the circumferential direction.
Preferably, the first rotor gear, the second rotor gear and the motor rotor are in interference fit with each other for circumferential positioning of the key slots.
Preferably, the first bearing stop and the second bearing stop are in interference fit with the bearing.
Preferably, the rotary transformer rotor gear and the rotary transformer rotor are in clearance fit for circumferential positioning of the key groove.
Preferably, the first rotor clamp spring groove, the second rotor clamp spring groove, the first bearing clamp spring groove, the second bearing clamp spring groove and the rotary change rotor clamp spring groove are fixed through clamp springs.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the first rotor is pressed to the first rotor step according to the matching of the first rotor inner key and the first rotor key groove, the first rotor clamping spring is installed to the first rotor clamping spring groove, the second rotor is pressed to the second rotor step according to the matching of the second rotor inner key and the second rotor key groove, the second rotor clamping spring is installed to the second rotor clamping spring groove, the two sets of rotor clamping spring structures are axially positioned, the structure is simple and convenient to process, the rotor assembly is convenient to install, the overall structure is simple and reliable, the manufacturing cost is low, and the two sets of rotor steps and the rotating shaft are integrally designed, so that the axial positions of the two sets of rotors are ensured.
2. The rotary transformer rotor is pressed to a rotary transformer rotor step according to the matching of the rotary transformer rotor inner key and the rotary transformer rotor key groove, the rotary transformer rotor clamping spring is installed to the rotary transformer rotor clamping spring groove, the expansion sleeve coupler is installed to the coupler step, the expansion sleeve coupler is fastened and fixed through the inner structure of the expansion sleeve coupler, the concentricity of the rotor and the rotary transformer rotor is guaranteed through the rotary transformer rotor gear and clamping spring groove structure, and meanwhile the position reliability of the rotary transformer rotor is improved through the clamping spring axial fixation.
3. Simultaneously the utility model discloses ensure that two sets of rotor radial magnetic field distribute unanimously, can realize that same position sensor feeds back the relative position information of two sets of rotors simultaneously, it is extravagant to reduce the material, reduces material cost.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
Fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is the utility model discloses electric motor rotor assembly is schematic.
In the figure: 1. a motor shaft; 2. a central threaded hole; 3. a coupling gear; 4. a coupling step; 5. a shaft seal stop; 6. a first bearing snap spring groove; 7. a first bearing stage; 8. a first bearing step; 9. a first rotor leaf spring slot; 10. a first rotor keyway; 11. a first rotor gear; 12. a first rotor step; 13. a second rotor step; 14. a second rotor stage; 15. a second rotor keyway; 16. a second rotor circlip groove; 17. a second bearing step; 18. a second bearing stage; 19. a second bearing circlip groove; 20. a step of a rotary transformer rotor; 21. rotating the rotor gear; 22. a rotary transformer rotor key slot; 23. a rotary variable sub spring slot; 24. expanding and tightening the sleeve coupler; 25. a first bearing clamp spring; 26. a first bearing; 27. a first rotor clamp spring; 28. a first rotor; 29. a second rotor; 30. a second rotor clamp spring; 31. a second bearing; 32. a second bearing snap spring; 33. a rotary transformer rotor; 34. a rotary transformer rotor clamp spring; 35. and (5) framework oil seal.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1-2, a dual-rotor motor rotating shaft structure includes a rotor rotating shaft 1, where the rotor rotating shaft 1 is provided with a central threaded hole 2, a coupling stop 3, a coupling step 4, a shaft sealing stop 5, a first bearing snap spring groove 6, a first bearing stop 7, a first bearing step 8, a first rotor snap spring groove 9, a first rotor key groove 10, a first rotor stop 11, a first rotor step 12, a second rotor step 13, a second rotor stop 14, a second rotor key groove 15, a second rotor snap spring groove 16, a second bearing step 17, a second bearing stop 18, a second bearing snap spring groove 19, a rotary-change rotor step 20, a rotary-change rotor stop 21, a rotary-change rotor key groove 22, and a rotary-change rotor snap spring groove 23 in sequence from a shaft head to a shaft tail;
the central threaded hole 2 is arranged on the front end face of the shaft coupling gear 3, the rear end of the shaft coupling gear 3 is provided with a shaft sealing gear 5, a shaft coupling step 4 is formed between the shaft coupling gear 3 and the shaft sealing gear 5, the rear end of the shaft sealing gear 5 is provided with a first bearing gear 7, a first bearing snap spring groove 6 is arranged on the outer surface of the first bearing gear 7, the rear end of the first bearing gear 7 is provided with a first rotor gear 11, the first rotor snap spring groove 9 and a first rotor key groove 10 are both arranged on the outer surface of the first rotor gear 11, the rear end of the first rotor gear 11 is the thickest shaft body of the rotor rotating shaft 1, a first rotor step 12 is formed between the first rotor gear 11 and the thickest shaft body, a second rotor gear 14 is arranged on the rear end of the thickest shaft body, a second rotor step 13 is formed between the second rotor gear 14 and the thickest shaft body, a second rotor snap spring groove 16 and a second rotor key groove 15 are both arranged on the outer surface of the second rotor gear 14, and the rear end of the second rotor, a second bearing step 17 is formed between the second rotor gear 14 and the second bearing gear 18, a second bearing snap spring groove 19 is formed in the outer surface of the second bearing gear 18, a transition shaft gear is arranged at the rear end of the second bearing gear 18, a rotary-change rotor gear 21 is arranged at the rear end of the transition shaft gear, a rotary-change rotor step 20 is formed between the rotary-change rotor gear 21 and the transition shaft gear, and a rotary-change rotor key groove 22 and a rotary-change rotor snap spring groove 23 are formed in the outer surface of the rotary-change rotor step 20;
the coupling gear 3 is a rotor rotating shaft 1 and expansion sleeve coupling 24 assembling surface, the shaft sealing gear 5 is a rotor rotating shaft 1 and framework oil seal 35 sealing surface, the first bearing gear 7 is a rotor rotating shaft 1 and first bearing 26 assembling surface, the first rotor gear 11 is a rotor rotating shaft 1 and first rotor 28 assembling surface, the second rotor gear 14 is a rotor rotating shaft 1 and second rotor 29 assembling surface, the second bearing gear 18 is a rotor rotating shaft 1 and second bearing 31 assembling surface, the rotary transformer rotor gear 21 is a rotor rotating shaft 1 and rotary transformer 33 assembling surface, the first bearing clamp spring 25 is clamped inside the first bearing clamp spring groove 6, the first rotor clamp spring 27 is clamped inside the first rotor clamp spring groove 9, the second rotor clamp spring 30 is clamped inside the second rotor clamp spring groove 16, the second bearing clamp spring 32 is clamped inside the second bearing clamp spring groove 19, and the rotary transformer clamp spring 34 is clamped inside the rotary transformer spring groove 23;
the central threaded hole 2 can temporarily install an eyebolt in the process of transporting and installing the motor rotor for hoisting, transporting, installing and using.
The first rotor step 12, the second rotor step 13 and the rotor rotating shaft are of an integrated structure, relative movement does not exist between the positioning step and the rotor rotating shaft, and the structure is simple and the positioning is reliable.
The first rotor key groove 10 and the second rotor key groove 15 are axially collinear circumferential positioning grooves, and the straightness of the two positioning grooves needs to be guaranteed, so that the radial magnetic fields of the two rotors are guaranteed to be distributed consistently, and the circumferential directions are reliably fixed.
The first rotor gear 11, the second rotor gear 14 and the motor rotor are in interference fit with each other for circumferential positioning of key grooves.
The first bearing rail 7 and the second bearing rail 18 are in interference fit with the bearing.
The rotary transformer rotor step 21 is in clearance fit with the rotary transformer rotor for circumferential positioning of a key groove.
The first rotor clamp spring groove 9, the second rotor clamp spring groove 16, the first bearing clamp spring groove 6, the second bearing clamp spring groove 19 and the rotary-change rotor clamp spring groove 23 are reinforced and fixed for preventing the rotor iron core, the bearing and the rotary-change rotor from axially jumping through clamp springs.
In order to ensure the consistency and reliability of the oblique poles of the rotor, the rotor core is in interference fit with the rotor support.
The assembling method of the rotor assembly where the motor rotating shaft is located specifically comprises the following steps:
the method comprises the following steps: pressing the first rotor 28 to the first rotor step 12 by fitting the first rotor inner key with the first rotor key groove 10 and mounting the first rotor leaf spring 27 to the first rotor leaf spring groove 9;
step two: the second rotor 29 is pressed to the second rotor step 13 by matching the second rotor inner key with the second rotor key groove 15, and the second rotor clamp spring 30 is installed to the second rotor clamp spring groove 16;
step three: mounting the preheated first bearing 26 to the first bearing step 8 in a shrink-fit manner, and mounting the first bearing snap spring 25 to the first bearing snap spring groove 6;
step four: mounting the preheated second bearing 31 to the second bearing step 17 in a shrink fit manner, and mounting the second bearing snap spring 32 to the second bearing snap spring groove 19;
step five: the rotary transformer rotor 33 is matched with the rotary transformer key groove 22 according to the rotary transformer rotor inner key, the rotary transformer rotor 33 is pressed to a rotary transformer rotor step 20, and a rotary transformer sub spring 34 is installed to a rotary transformer sub spring groove 23;
step six: and (3) installing the expansion sleeve coupler 24 to the coupler step 4, and fastening and fixing the expansion sleeve coupler through the internal structure of the expansion sleeve coupler.
The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not exhaustive and do not limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.
Claims (8)
1. A double-rotor motor rotating shaft structure comprises a rotor rotating shaft (1) and is characterized in that, the rotor rotating shaft (1) is sequentially provided with a central threaded hole (2), a coupling gear (3), a coupling step (4), a shaft sealing gear (5), a first bearing snap spring groove (6), a first bearing gear (7), a first bearing step (8), a first rotor snap spring groove (9), a first rotor key groove (10), a first rotor gear (11), a first rotor step (12), a second rotor step (13), a second rotor gear (14), a second rotor key groove (15), a second rotor snap spring groove (16), a second bearing step (17), a second bearing gear (18), a second bearing snap spring groove (19), a rotary transformer rotor step (20), a rotary transformer rotor gear (21), a rotary transformer key groove (22) and a rotary transformer spring groove (23) from the shaft head to the shaft tail;
the shaft front end face of shaft coupling shelves (3) is seted up to central screw hole (2), shaft coupling shelves (3) rear end sets up shaft seal shelves (5), form shaft coupling step (4) between shaft coupling shelves (3) and shaft seal shelves (5), shaft seal shelves (5) rear end sets up first bearing shelves (7), first bearing jump ring groove (6) are seted up at first bearing shelves (7) surface, first bearing shelves (7) rear end sets up first rotor shelves (11), first rotor jump ring groove (9) and first rotor keyway (10) are all seted up at the surface of first rotor shelves (11), first rotor shelves (11) rear end is rotor pivot (1) thickest shaft body, form first rotor step (12) between first rotor shelves (11) and the thickest shaft body, second rotor shelves (14) set up in thickest shaft body rear end, a second rotor step (13) is formed between the second rotor gear (14) and the thickest shaft body, the second rotor jump ring groove (16) and the second rotor key groove (15) are both arranged on the outer surface of the second rotor stop (14), a second bearing rail (18) is arranged at the rear end of the second rotor rail (14), a second bearing step (17) is formed between the second rotor rail (14) and the second bearing rail (18), the second bearing snap spring groove (19) is arranged on the outer surface of the second bearing stop (18), a transition shaft gear is arranged at the rear end of the second bearing gear (18), the rotary-change rotor gear (21) is arranged at the rear end of the transition shaft gear, a rotary-change rotor step (20) is formed between the rotary-change rotor gear (21) and the transition shaft gear, the rotary transformer rotor key groove (22) and the rotary transformer rotor sub-spring groove (23) are both formed in the outer surface of the rotary transformer rotor step (20);
the shaft coupling gear (3) is a rotor rotating shaft (1) and expansion sleeve shaft coupling (24) assembling surface, the shaft sealing gear (5) is a rotor rotating shaft (1) and framework oil seal (35) sealing surface, the first bearing gear (7) is a rotor rotating shaft (1) and first bearing (26) assembling surface, the first rotor gear (11) is a rotor rotating shaft (1) and first rotor (28) assembling surface, the second rotor gear (14) is a rotor rotating shaft (1) and second rotor (29) assembling surface, the second bearing gear (18) is a rotor rotating shaft (1) and second bearing (31) assembling surface, the rotary transformer rotor gear (21) is a rotor rotating shaft (1) and rotary transformer rotor (33) assembling surface, the first bearing clamp spring (25) is clamped inside the first bearing clamp spring groove (6), and the first rotor clamp spring (27) is clamped inside the first rotor clamp spring groove (9), the second rotor clamp spring (30) is clamped inside the second rotor clamp spring groove (16), the second bearing clamp spring (32) is clamped inside the second bearing clamp spring groove (19), and the rotary transformer rotor clamp spring (34) is clamped inside the rotary transformer clamp spring groove (23).
2. The dual-rotor motor rotating shaft structure as claimed in claim 1, wherein the central threaded hole (2) is used for temporarily installing an eyebolt for hoisting.
3. The structure of the rotating shaft of the double-rotor motor as claimed in claim 1, wherein the first rotor step (12), the second rotor step (13) and the rotating shaft of the rotor are of an integral structure.
4. The dual-rotor motor shaft structure as claimed in claim 1, wherein the first rotor key groove (10) and the second rotor key groove (15) are axially collinear circumferential positioning grooves.
5. The dual-rotor motor shaft structure as claimed in claim 1, wherein the first rotor gear (11), the second rotor gear (14) and the motor rotor are in interference fit with each other for circumferential positioning of key slots.
6. The dual-rotor motor rotating shaft structure according to claim 1, wherein the first bearing stop (7) and the second bearing stop (18) are in interference fit with the bearing.
7. The dual rotor motor shaft structure of claim 1, wherein said rotating rotor step (21) is in clearance fit with the rotating rotor for circumferential positioning of the key groove.
8. The dual-rotor motor rotating shaft structure according to claim 1, wherein the first rotor clamp spring groove (9), the second rotor clamp spring groove (16), the first bearing clamp spring groove (6), the second bearing clamp spring groove (19) and the rotary transformer clamp spring groove (23) are fixed through clamp springs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921716152.6U CN210327181U (en) | 2019-10-14 | 2019-10-14 | Double-rotor motor rotating shaft structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921716152.6U CN210327181U (en) | 2019-10-14 | 2019-10-14 | Double-rotor motor rotating shaft structure |
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| Publication Number | Publication Date |
|---|---|
| CN210327181U true CN210327181U (en) | 2020-04-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921716152.6U Active CN210327181U (en) | 2019-10-14 | 2019-10-14 | Double-rotor motor rotating shaft structure |
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| Country | Link |
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| CN (1) | CN210327181U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111864974A (en) * | 2020-07-20 | 2020-10-30 | 南京万盛精密制造有限公司 | Micromotor rotating shaft with limiting structure |
-
2019
- 2019-10-14 CN CN201921716152.6U patent/CN210327181U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111864974A (en) * | 2020-07-20 | 2020-10-30 | 南京万盛精密制造有限公司 | Micromotor rotating shaft with limiting structure |
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