CN116345803B - Motor vibration-resistant structure for assembling rotary transformer and assembling method thereof - Google Patents
Motor vibration-resistant structure for assembling rotary transformer and assembling method thereof Download PDFInfo
- Publication number
- CN116345803B CN116345803B CN202310620867.6A CN202310620867A CN116345803B CN 116345803 B CN116345803 B CN 116345803B CN 202310620867 A CN202310620867 A CN 202310620867A CN 116345803 B CN116345803 B CN 116345803B
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- rotary
- motor
- assembly
- rear end
- end cover
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
- H02K11/21—Devices for sensing speed or position, or actuated thereby
- H02K11/225—Detecting coils
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/24—Casings; Enclosures; Supports specially adapted for suppression or reduction of noise or vibrations
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
Abstract
The invention belongs to the technical field of rotary transformers, and particularly relates to a motor vibration-resistant structure for assembling a rotary transformer and an assembling method thereof. The position of the rotary-change stator component can be effectively guaranteed to be detected by the rotary-change stator component, and stable operation of the brushless direct current motor is further guaranteed. The motor comprises a motor assembly, a motor rear end cover, a rotary transformer and an elastic retainer ring for holes; the motor assembly comprises a shell assembly and a rotor assembly; the rotary transformer comprises a rotary transformer assembly and a rotary transformer assembly; the rotary-change rotor assembly is connected with the rotor assembly; the rotary stator component is fixed on the rear end cover of the motor; the motor rear end cover is provided with a boss, the rotary stator assembly is sleeved outside the boss, and the boss is used for ensuring concentricity of the rotary stator assembly when the rotary stator assembly rotates left and right; the rotary stator component is provided with a waist-shaped hole and is fixed on the motor rear end cover through a screw, and the screw penetrates through the waist-shaped hole and is fixed on the motor rear end cover.
Description
Technical Field
The invention belongs to the technical field of rotary transformers, and particularly relates to a motor vibration-resistant structure for assembling a rotary transformer and an assembling method thereof.
Background
Motors are of various kinds, and brushless DC motors have excellent speed regulation performance and are widely used. The brushless DC motor has the advantages of reliable operation, easy maintenance and the like, is popular in the market, and is widely applied to the fields of electric automobiles, household appliances, industrial equipment and the like.
When the brushless direct current motor works, as the motor is internally provided with the electric brush, the mechanical reversing function cannot be realized, and in order to ensure the operation of the motor and realize the reversing function, the position of a motor rotor is required to be detected, and then signals are transmitted to the controller, so that the electronic reversing function is realized. The resolver is one of detection sensors that conventionally determine the position of the rotor. The rotary transformer is used as a rotor position detection device, has the characteristics of simple structure, sensitive action, reliable work, low requirements on environmental conditions (particularly high temperature and high dust places), large output signal amplitude, strong anti-interference capability and the like, and the universality is one of reasons for market attention.
The rotary transformer mainly comprises two parts, namely a rotary stator assembly and a rotary rotor assembly. In the assembly process, the rotary transformer is generally arranged at the rear end of the brushless direct current motor,
the rotary-changing rotor assembly is installed on a main shaft of the brushless direct current motor in an interference fit mode and is fixed through a nut. When the motor rotor starts to rotate, the motor rotor and the rotary-transformer assembly rotate in the same direction and position due to the existence of the main shaft.
In the aspect of the rotary-variable stator assembly, the existing universal rotary-variable stator assembly shell is provided with a groove for fixing, after the rotary-variable stator assembly is placed on the motor rear end cover, the rotary-variable stator assembly is manually held, after the rotary-variable zero point adjustment is completed by the signal generator and the oscilloscope, the rotary-variable stator assembly is pressed and fixed, and then the rotary-variable stator assembly is pressed on the motor rear end cover through the installation of screws by the left pressing piece and the right pressing piece, so that the rotary-variable stator assembly cannot move in the axial direction and the radial direction. So far, when the motor rotor rotates, the rotary stator component can detect the position signal of the rotary stator component which synchronously rotates with the motor rotor, and the position signal is transmitted to the controller to control the brushless direct current motor, so that the motor can stably run.
However, this structure of the motor equipped with a resolver has certain drawbacks both in use and in assembly:
firstly, as the rotary stator component is fixed by pressing two pressing sheets on the groove and then screwing by screws, if the motor works in a severe environment of repeated and intense vibration, the screws are loosened, so that the rotary stator component is displaced in the axial direction and the radial direction, the position of the rotary stator component is detected inaccurately by the rotary stator component, and the control of the brushless direct current motor by the controller is affected; in more serious cases, the screw falls off, eventually leading to the falling off of the rotary-variable stator assembly, and the position signal cannot be fed back into the controller, so that the brushless direct-current motor stops rotating.
Secondly, the rotary stator assembly is installed on the rear end cover of the motor, a zero adjusting process is needed, then the pressing sheet is installed, screwed and fixed, and the operation process is complicated. In the process of adjusting the zero point, in order to prevent the axial displacement of the rotary-change stator assembly, the rotary-change stator assembly needs to be manually held and then twisted; after zero point adjustment is completed, in order to prevent the deflection of the rotary-variable stator assembly, the rotary-variable stator assembly still needs to be manually held up and then pressed by a pressing sheet, screws are screwed one by one, and in the process of operation and assembly, the position of the rotary-variable stator assembly is manually held up, so that the rotary-variable stator assembly is inevitably slightly moved, and the accuracy of zero point adjustment and installation is affected. Therefore, the operation process is not only cumbersome, but also prone to installation errors.
Disclosure of Invention
The invention provides a motor vibration-resistant structure for assembling a rotary transformer and an assembling method thereof, aiming at the defects in the prior art.
In order to achieve the aim, the invention adopts the following technical scheme that the motor vibration-resistant structure for assembling the rotary transformer comprises a motor assembly, a motor rear end cover, a rear end cover, the rotary transformer and a circlip for holes; the motor assembly comprises a shell assembly and a rotor assembly; the resolver includes a resolver subassembly and a resolver subassembly.
The rotary-change rotor assembly is connected with the rotor assembly; the rotary stator component is fixed on the rear end cover of the motor; the motor rear end cover is provided with a boss, the rotary stator assembly is sleeved outside the boss, and the boss is used for ensuring concentricity of the rotary stator assembly when the rotary stator assembly rotates left and right; the rotary stator assembly is fixed on the motor rear end cover through screws, and the screws penetrate through the waist-shaped holes and are fixed on the motor rear end cover.
Further, the rotary-transformer assembly is coupled to a spindle in the rotor assembly.
Further, a groove for installing the circlip for the hole is further formed in the motor rear end cover, and the circlip for the hole is used for fixing the rotation-changing stator assembly.
A method for assembling a vibration-resistant structure of an electric motor for assembling a resolver includes the following steps.
Step 1: after the rotor assembly is installed, the rotary-transformation rotor assembly is pressed onto the rotor assembly.
Step 2: after the motor assembly is installed, placing the installed rotor assembly into the motor assembly, and then installing a motor rear end cover.
Step 3: the rotary stator assembly is placed on a boss of the motor rear end cover, a screw penetrates through a waist-shaped hole of the rotary stator assembly and is mounted on the motor rear end cover, the screw is not screwed down, the rotary stator assembly is guaranteed to rotate left and right, and the rotary stator assembly cannot be separated from the motor rear end cover.
Step 4: a signal generator is used for providing a sinusoidal signal for the rotary transformer, an oscilloscope is connected with the rotary transformer stator assembly and the motor assembly, and zero point adjustment is started.
Step 5: and displaying the output voltage waveform of the rotary-change stator assembly and the output voltage waveform of the motor assembly by using an oscilloscope, wherein the rotary-change stator assembly is rotated left and right, so that the phase of the output voltage waveform of the rotary-change stator assembly is deviated.
Step 6: and when the output voltage waveform of the rotary transformer stator component is coincident with the zero point of the output voltage waveform of the motor component, the zero point adjustment is considered to be successful, otherwise, the step 5 is repeated.
Step 7: the position of the rotary-changing stator component is guaranteed to be fixed, the screw is screwed down, and then the elastic retainer ring for the mounting hole is arranged in the groove of the rear end cover of the motor.
Step 8: and finally, installing a rear end cover, and completing the whole assembly.
Compared with the prior art, the invention has the beneficial effects.
The invention reduces the displacement of the rotary stator component in the axial direction and the radial direction even if the rotary stator component works in a severe vibration environment, and can effectively ensure that the rotary stator component detects the position of the rotary stator component, thereby ensuring the stable operation of the brushless direct current motor.
Drawings
The invention is further described below with reference to the drawings and the detailed description. The scope of the present invention is not limited to the following description.
Fig. 1 is a perspective view of a vibration resistant structure of a motor equipped with a resolver according to the present invention.
Fig. 2-1 is a cross-sectional view of a rotary transformer of the present invention.
Fig. 2-2 are top views of rotary transformers of the present invention.
Fig. 3-1 is a cross-sectional view of the rear end cap of the motor of the present invention.
Fig. 3-2 is a top view of the rear end cap of the motor of the present invention.
Fig. 4 is an enlarged partial schematic view of fig. 1.
Fig. 5 is a sectional view in the direction A-A of fig. 1.
Fig. 6 is an assembly flow chart of a motor vibration resistant structure of an assembled resolver.
In the figure, 1 is a rotary transformer, 2 is a circlip for holes, 3 is a motor component, 4 is a rotor component, 5 is a motor rear end cover, 6 is a rear end cover, 7 is a rotary stator component, 8 is a rotary rotor component, 9 is a waist-shaped hole, 10 is a groove, 11 is a boss, and 12 is a screw.
Detailed Description
Example 1: as shown in fig. 1 to 6, the motor vibration-resistant structure for assembling the rotary transformer comprises a motor assembly 3, a motor rear end cover 5, a rear end cover 6, the rotary transformer 1 and a circlip 2 for holes; the motor assembly 3 comprises a shell assembly and a rotor assembly 4; the rotary transformer 1 comprises a rotary sub-assembly 8 and a rotary sub-assembly 7.
Specifically, the resolver 1 is composed of a resolver stator assembly 7 and a resolver rotor assembly 8, and the resolver stator assembly 7 and the resolver rotor assembly 8 are of a split type structure; the rotary stator assembly 7 is fixed on the motor rear end cover 5, and the rotary stator assembly 8 is fixed on a motor rotor rotating shaft to realize synchronous rotation. And the inner diameter of the rotary stator assembly 7 is slightly larger than the outer diameter of the rotary stator assembly 8, so that the rotary stator assembly 8 can be guaranteed to rotate without interference with the rotary stator assembly 7. Wherein: the spindle of the rotor assembly 4 is used for connecting the motor rotor with the rotary-change rotor assembly 8, and can synchronously rotate, so that the rotary-change rotor assembly 7 can effectively detect the position information of the rotary-change rotor assembly 8, and further detect the position information of the motor rotor.
The concrete structural improvement is as follows: the rotary-rotor assembly 8 is connected to the rotor assembly 4. The rotary stator assembly 7 is fixed on the motor rear end cover 5.
The motor rear end cover 5 is provided with a boss 11, the rotary-change stator assembly 7 is sleeved outside the boss 11, and the boss 11 is used for ensuring concentricity of the rotary-change stator assembly 7 when the rotary-change stator assembly 7 rotates left and right.
Waist-shaped holes 9 are formed in the rotary stator assembly 7, the rotary stator assembly 7 is fixed to the motor rear end cover 5 through screws, and the screws penetrate through the waist-shaped holes 9 and are fixed to the motor rear end cover 5. Three waist-shaped holes 9 are formed in the fixing plate of the rotary-changing stator assembly 7 and used for left and right rotation of the rotary-changing stator assembly 7 to adjust zero points after screws are placed, and then the rotary-changing stator assembly is fixed.
The arrangement of the waist-shaped hole 9 can replace the existing assembly mode of a pressing plate, in the zero point adjusting process, the waist-shaped hole 9 on the fixing plate can enable the rotary stator assembly 7 to rotate left and right with the screw which is not screwed down, assembly efficiency is improved, and axial and radial movement or deviation of the rotary stator assembly 7 in the assembly process is effectively prevented.
The embodiment 2 and the motor rear end cover 5 are also provided with grooves 10 for installing circlips 2 for holes, and the circlips 2 for holes are used for fixing the rotation-changing stator assembly 7. The distance from the groove 10 to the bottom surface is slightly smaller than the thickness of the fixing plate of the rotation stator assembly 7. This ensures that the hole presses the circlip 2 against the swirl stator assembly 7.
The invention uses the circlip 2 for hole to fix the rotation-changing stator component 7 by changing the structure of the motor rear end cover 5. Due to the existence of the circlip 2 for hole, the rotation stator assembly 7 is tightly clamped, and no axial displacement is possible any more; secondly, as the distance from the groove 10 to the bottom surface is slightly smaller than the thickness of the fixed plate of the rotary deformation stator assembly 7, the hole is pressed by the elastic retainer ring 2, so that the friction force in the radial direction is increased, and the rotary deformation stator assembly 7 cannot displace in the radial direction due to the existence of the screw. Finally, due to the existence of the elastic retainer ring 2 for holes, the screw for tightening the rotary-variable stator assembly 7 is covered and pressed, and even if vibration occurs, the screw cannot axially displace or fall off; the above-mentioned parts are restrained by a ring so that the radial and axial displacement of the resolver stator assembly 7 is reduced.
The invention can effectively ensure that the rotary stator assembly 7 detects the position of the rotary stator assembly 8 even if the rotary stator does not generate any axial and radial displacement under severe vibration environment, thereby ensuring the stable operation of the brushless direct current motor.
It should be understood that the foregoing detailed description of the present invention is provided for illustration only and is not limited to the technical solutions described in the embodiments of the present invention, and those skilled in the art should understand that the present invention may be modified or substituted for the same technical effects; as long as the use requirement is met, the invention is within the protection scope of the invention.
Claims (3)
1. A motor vibration-resistant structure for assembling a rotary transformer comprises a motor assembly, a motor rear end cover, a rear end cover, the rotary transformer and a circlip for holes; the motor assembly comprises a shell assembly and a rotor assembly; the rotary transformer comprises a rotary transformer assembly and a rotary transformer assembly; the method is characterized in that: the rotary-change rotor assembly is connected with the rotor assembly;
the rotary stator component is fixed on the rear end cover of the motor;
the motor rear end cover is provided with a boss, the rotary stator assembly is sleeved outside the boss, and the boss is used for ensuring concentricity of the rotary stator assembly when the rotary stator assembly rotates left and right;
the rotary stator assembly is fixed on the motor rear end cover through screws, and the screws penetrate through the waist-shaped holes and are fixed on the motor rear end cover;
the motor rear end cover is also provided with a groove for installing the circlip for the hole, and the circlip for the hole is used for fixing the rotation-changing stator component.
2. The resolver-assembled motor vibration-resistant structure according to claim 1, wherein: the rotary rotor assembly is coupled to a spindle in the rotor assembly.
3. An assembling method of a motor vibration-resistant structure for assembling a rotary transformer is characterized by comprising the following steps of: the method for assembling the motor vibration-resistant structure of the rotary transformer comprises the following steps:
step 1: after the rotor assembly is installed, the rotary-change rotor assembly is pressed onto the rotor assembly;
step 2: after the motor assembly is installed, placing the installed rotor assembly into the motor assembly, and then installing a motor rear end cover;
step 3: the rotary stator assembly is placed on a boss of a rear end cover of the motor, a screw penetrates through a waist-shaped hole of the rotary stator assembly and is mounted on the rear end cover of the motor, wherein the screw is not screwed, the rotary stator assembly can be guaranteed to rotate left and right, and the rotary stator assembly cannot be separated from the rear end cover of the motor;
step 4: providing a sinusoidal signal for the rotary transformer by using a signal generator, connecting the rotary transformer component with a motor component by using an oscilloscope, and starting to adjust the zero point;
step 5: an oscilloscope is used for displaying the output voltage waveform of the rotary-change stator assembly and the output voltage waveform of the motor assembly, and the rotary-change stator assembly is rotated left and right, so that the phase of the output voltage waveform of the rotary-change stator assembly is deviated;
step 6: when the zero point of the output voltage waveform of the rotary-change stator component is overlapped with that of the output voltage waveform of the motor component, the zero point is successfully regulated, otherwise, the step 5 is repeated;
step 7: ensuring the position of the rotary stator component to be fixed, screwing the screw, and then installing the hole elastic retainer ring into the groove of the rear end cover of the motor;
step 8: and installing a rear end cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310620867.6A CN116345803B (en) | 2023-05-30 | 2023-05-30 | Motor vibration-resistant structure for assembling rotary transformer and assembling method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310620867.6A CN116345803B (en) | 2023-05-30 | 2023-05-30 | Motor vibration-resistant structure for assembling rotary transformer and assembling method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116345803A CN116345803A (en) | 2023-06-27 |
| CN116345803B true CN116345803B (en) | 2023-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310620867.6A Active CN116345803B (en) | 2023-05-30 | 2023-05-30 | Motor vibration-resistant structure for assembling rotary transformer and assembling method thereof |
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| Country | Link |
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| CN (1) | CN116345803B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202395607U (en) * | 2011-12-05 | 2012-08-22 | 大洋电机新动力科技有限公司 | Rotary motor structure |
| CN104779762A (en) * | 2015-04-17 | 2015-07-15 | 南车株洲电力机车研究所有限公司 | Rotary transformer for rotary motor |
| CN109474088A (en) * | 2018-10-31 | 2019-03-15 | 佛山市顺德区金泰德胜电机有限公司 | A method of control magneto and rotary transformer initial zero position deviation |
| CN208862702U (en) * | 2018-10-31 | 2019-05-14 | 佛山市顺德区金泰德胜电机有限公司 | A kind of mounting structure of magneto and rotary transformer |
| CN110829773A (en) * | 2019-11-07 | 2020-02-21 | 沈阳兴华航空电器有限责任公司 | Motor structure with rotary transformer and rotary transformer debugging method thereof |
| CN217010634U (en) * | 2021-09-29 | 2022-07-19 | 广西玉柴机器股份有限公司 | Rotary transformer's drum formula mounting structure motor |
| CN218006094U (en) * | 2022-01-02 | 2022-12-09 | 江苏上骐集团有限公司 | Vibration damping rotor with new structure |
| WO2023029391A1 (en) * | 2021-08-30 | 2023-03-09 | 广州市德善数控科技有限公司 | Compressor and manufacturing method therefor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4320587B2 (en) * | 2003-11-28 | 2009-08-26 | 株式会社ジェイテクト | Electric power steering apparatus and manufacturing method thereof |
-
2023
- 2023-05-30 CN CN202310620867.6A patent/CN116345803B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202395607U (en) * | 2011-12-05 | 2012-08-22 | 大洋电机新动力科技有限公司 | Rotary motor structure |
| CN104779762A (en) * | 2015-04-17 | 2015-07-15 | 南车株洲电力机车研究所有限公司 | Rotary transformer for rotary motor |
| CN109474088A (en) * | 2018-10-31 | 2019-03-15 | 佛山市顺德区金泰德胜电机有限公司 | A method of control magneto and rotary transformer initial zero position deviation |
| CN208862702U (en) * | 2018-10-31 | 2019-05-14 | 佛山市顺德区金泰德胜电机有限公司 | A kind of mounting structure of magneto and rotary transformer |
| CN110829773A (en) * | 2019-11-07 | 2020-02-21 | 沈阳兴华航空电器有限责任公司 | Motor structure with rotary transformer and rotary transformer debugging method thereof |
| WO2023029391A1 (en) * | 2021-08-30 | 2023-03-09 | 广州市德善数控科技有限公司 | Compressor and manufacturing method therefor |
| CN217010634U (en) * | 2021-09-29 | 2022-07-19 | 广西玉柴机器股份有限公司 | Rotary transformer's drum formula mounting structure motor |
| CN218006094U (en) * | 2022-01-02 | 2022-12-09 | 江苏上骐集团有限公司 | Vibration damping rotor with new structure |
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| Publication number | Publication date |
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| CN116345803A (en) | 2023-06-27 |
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