CN110138178B - Spherical pair universal and double-universal permanent magnet coupler - Google Patents
Spherical pair universal and double-universal permanent magnet coupler Download PDFInfo
- Publication number
- CN110138178B CN110138178B CN201810133503.4A CN201810133503A CN110138178B CN 110138178 B CN110138178 B CN 110138178B CN 201810133503 A CN201810133503 A CN 201810133503A CN 110138178 B CN110138178 B CN 110138178B
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- spherical
- rotor
- permanent magnet
- inner rotor
- outer rotor
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- 230000005291 magnetic effect Effects 0.000 claims abstract description 49
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 38
- 239000010959 steel Substances 0.000 claims abstract description 38
- 230000008878 coupling Effects 0.000 claims description 53
- 238000010168 coupling process Methods 0.000 claims description 53
- 238000005859 coupling reaction Methods 0.000 claims description 53
- 239000000969 carrier Substances 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 20
- 238000009434 installation Methods 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 5
- 238000002955 isolation Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 230000009467 reduction Effects 0.000 abstract description 3
- 230000003139 buffering effect Effects 0.000 abstract description 2
- 230000008569 process Effects 0.000 abstract description 2
- 230000035939 shock Effects 0.000 abstract description 2
- 239000004020 conductor Substances 0.000 description 9
- 230000009351 contact transmission Effects 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 239000003302 ferromagnetic material Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K49/00—Dynamo-electric clutches; Dynamo-electric brakes
- H02K49/02—Dynamo-electric clutches; Dynamo-electric brakes of the asynchronous induction type
- H02K49/04—Dynamo-electric clutches; Dynamo-electric brakes of the asynchronous induction type of the eddy-current hysteresis type
- H02K49/043—Dynamo-electric clutches; Dynamo-electric brakes of the asynchronous induction type of the eddy-current hysteresis type with a radial airgap
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K49/00—Dynamo-electric clutches; Dynamo-electric brakes
- H02K49/10—Dynamo-electric clutches; Dynamo-electric brakes of the permanent-magnet type
- H02K49/104—Magnetic couplings consisting of only two coaxial rotary elements, i.e. the driving element and the driven element
- H02K49/106—Magnetic couplings consisting of only two coaxial rotary elements, i.e. the driving element and the driven element with a radial air gap
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)
Abstract
A universal permanent magnet coupler with spherical pairs comprises an outer rotor, an inner rotor and spherical pair positioning elements; the outer rotor and the inner rotor are of spherical structures and comprise a spherical rotor carrier and a flange shaft sleeve, outer rotor magnetic steel is arranged on the inner surface of the outer rotor carrier, inner rotor magnetic steel is arranged on the outer surface of the inner rotor carrier, the outer rotor magnetic steel and the inner rotor magnetic steel are also spherical, the outer rotor, the inner rotor and the spherical pair positioning element have a common geometric rotation center, interference is reduced to the greatest extent when the outer rotor and the inner rotor rotate relatively, and the outer rotor and the inner rotor can rotate independently around X, Y, Z shafts of a space coordinate system. The spherical kinematic pair is arranged between the inner rotor and the outer rotor, so that the air gap of the two permanent magnet rotors is uniform, and the transmission moment is reliable; the spherical pair universal permanent magnet coupler has the advantages of large allowed angular installation error, obvious vibration isolation and vibration reduction effect, good elastic buffering, strong shock resistance in the working process, convenient installation and high reliability.
Description
Technical Field
The present disclosure relates to the field of mechanical transmission, and in particular, to a spherical pair universal and double universal permanent magnet coupling.
Background
At present, the permanent magnet coupling has been widely used because of a series of advantages such as non-contact transmission torque and rotation speed. The existing permanent magnet coupling mainly comprises a cylinder type permanent magnet coupling and a disc type permanent magnet coupling, wherein the cylinder type permanent magnet coupling realizes power transmission by means of radial magnetic coupling, and the disc type permanent magnet coupling realizes power transmission by means of axial magnetic coupling.
Compared with the traditional coupling, the conventional cylindrical permanent magnet coupling or disc permanent magnet coupling has larger allowable installation angle error, and although the allowable angle error value can reach 3-5 degrees, the cylindrical permanent magnet coupling or disc permanent magnet coupling can not meet the actual working condition requirement for some long-distance and large-angle rotating speeds and torque transmission requirements.
The Chinese patent (issued publication number: CN 201310602Y) discloses a hemispherical magnetic transmission, which comprises a transmission case and a speed changing mechanism, wherein the speed changing mechanism is in transmission connection with a power input and output shaft, and the speed changing mechanism is a pair of hemispherical bodies which are mutually attracted and transmitted through strong magnetic blocks and heteropolar magnetic force; the powerful magnetic blocks are fixedly connected to the two hemispheroids, the magnetic poles between the adjacent hemispheroids are opposite, the two hemispheroids are in transmission connection through magnetic attraction, and the transmission shafts of the two hemispheroids respectively penetrate through the supporting piece arranged on the gearbox and are connected with the shaft through the universal coupling. The non-contact transmission speed change is realized by magnetic attraction between the two hemispherical surfaces, and the non-contact transmission speed change device has the technical effects of stable operation and no mechanical friction. However, the structure cannot realize the long-distance and large-angle rotating speed and torque transmission requirements, and is complex in structure and large in component number.
Chinese patent (issued publication number: CN 104167899A) discloses a permanent magnet eddy current flexible spherical coupling, which comprises an input shaft, an output shaft, a conductor and a permanent magnet. The conductor is connected with the input shaft through a conductor disc seat, the permanent magnet is connected with the output shaft through a disc seat, an air gap is arranged between the conductor and the permanent magnet, a fan is arranged on the disc seat or the conductor disc seat, and a vent hole is arranged on the permanent magnet. The permanent magnet eddy current flexible spherical coupling has the problems of serious temperature rise and poor heat dissipation, needs to be cooled by a fan, and has low transmission efficiency. An air gap exists between the conductor and the permanent magnet, the conductor is generally made of non-ferromagnetic materials (such as brass, aluminum and the like) and is not in contact with the permanent magnet, so that a spherical kinematic pair is not formed between the conductor and the permanent magnet in practice, a positioning element is not arranged between the conductor and the permanent magnet, the uniformity of the air gap cannot be ensured, and the stability of asynchronous transmission torque cannot be ensured. Aiming at the use conditions that the existing permanent magnet coupling cannot meet the requirements of long-distance and large-angle transmission rotating speed and torque, the universal permanent magnet coupling which can tolerate large installation angle errors, has no temperature rise, high transmission efficiency, good vibration isolation and vibration reduction effects, low cost and good stability of transmission torque and is easy to popularize is urgently needed.
Disclosure of Invention
The utility model aims at solving the problems of high centering requirement, large vibration, low efficiency, complex structure and low safety and reliability of the high-speed coupling in the prior art, and providing a spherical pair universal and double universal permanent magnet coupling.
One aspect of the present disclosure provides a spherical pair universal permanent magnet coupling, comprising an outer rotor, an inner rotor, and a spherical pair positioning element; the outer rotor and the inner rotor are of spherical structures.
The outer rotor comprises a spherical outer rotor carrier and an outer rotor flange shaft sleeve, and outer rotor magnetic steel is arranged on the inner spherical surface of the spherical outer rotor carrier.
Wherein the outer rotor magnetic steel is spherical; the inner rotor also comprises a spherical inner rotor carrier and an inner rotor flange shaft sleeve, and inner rotor magnetic steel is arranged on the outer spherical surface of the spherical inner rotor carrier.
Wherein, inner rotor magnet steel also is spherical.
The outer rotor and the inner rotor are positioned through a spherical pair positioning element.
The outer rotor, the inner rotor and the spherical pair positioning element have a common geometric rotation center, and the outer rotor and the inner rotor can rotate independently around X, Y, Z shafts of a space coordinate system.
Preferably, the outer spherical surface of the outer rotor carrier is connected with an outer rotor flange shaft sleeve, the outer rotor flange shaft sleeve is rigidly connected with the input shaft, the outer spherical surface of the inner rotor carrier is connected with an inner rotor flange shaft sleeve, and the inner rotor flange shaft sleeve is rigidly connected with the output shaft; or the outer spherical surface of the outer rotor carrier is connected with the inner rotor flange shaft sleeve, and the outer spherical surface of the inner rotor carrier is connected with the outer rotor flange shaft sleeve.
Preferably, the spherical pair positioning element is rigidly connected to the inner rotor interior.
Preferably, the spherical pair positioning element is a spherical pair positioning rod, one end of the spherical pair positioning rod is rigidly connected inside the inner rotor, the surface of the other end of the spherical pair positioning rod is a spherical surface, and a spherical kinematic pair is formed by the spherical surface of the spherical pair positioning rod and the inner spherical surface of the outer rotor carrier.
Preferably, the inner spherical surface of the outer rotor is further provided with a limiting groove for sliding of the spherical end part of the spherical pair positioning rod.
Preferably, the outer rotor magnetic steel and the inner rotor magnetic steel are respectively formed by splicing a plurality of spherical magnetic steels and form spherical magnetic coupling.
Another aspect of the present disclosure provides a spherical pair double-universal permanent magnet coupling, wherein two spherical pair universal permanent magnet couplings according to any one of the preceding claims are connected in series, and wherein a common transmission shaft is rigidly connected between inner rotor carriers of the two spherical pair universal permanent magnet couplings.
Through the technical scheme, the technical effects of the present disclosure are as follows:
1. the spherical kinematic pair is arranged between the outer rotor and the inner rotor, so that the uniform air gap of the magnetic coupling of the two permanent magnet rotors is ensured, and the transmission moment is reliable.
2. The outer rotor and the inner rotor of the present disclosure have a common geometric rotation center, and the two can rotate independently around the axis of the space coordinate system X, Y, Z, thereby ensuring the installation of large angle errors.
3. The spherical pair positioning element is arranged, has a common geometric rotation center with the outer rotor and the inner rotor, ensures that interference is reduced to the greatest extent when the outer rotor and the inner rotor relatively rotate, and is convenient for realizing the installation of large angle errors.
4. The spherical pair universal permanent magnet coupler has the advantages of obvious vibration isolation and vibration reduction effects, good elastic buffering, no temperature rise, high transmission efficiency, strong shock resistance in the working process, convenience in installation and high reliability.
5. The spherical pair permanent magnet coupler can be used as a permanent magnet ball joint to realize rotation within a certain angle range.
6. The two spherical pair permanent magnet couplings can be connected in series, so that the spherical pair double-universal permanent magnet coupling can be formed, and the installation error of the spherical pair double-universal permanent magnet coupling is larger.
Additional features and advantages of the present disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings are included to provide a further understanding of the disclosure, and are incorporated in and constitute a part of this specification, illustrate the disclosure and together with the description serve to explain, but do not limit the disclosure. In the drawings:
FIG. 1 is a schematic illustration of a spherical pair universal permanent magnet coupling of a preferred embodiment of the present disclosure;
FIG. 2 is a schematic illustration of a spherical pair universal permanent magnet coupling of a preferred embodiment of the present disclosure in one state of use;
FIG. 3 is a schematic structural view of a spherical pair double-universal permanent magnet coupling of the present disclosure;
Fig. 4 is a schematic structural view of another embodiment of a spherical pair double universal permanent magnet coupling of the present disclosure.
Description of the reference numerals
1. Outer rotor flange shaft sleeve
2. Spherical pair positioning element
3. Outer rotor carrier
4. Outer rotor magnetic steel
5. Inner rotor magnetic steel
6. Inner rotor carrier
7. Inner rotor flange shaft sleeve
8. Limiting groove
Radius of outer surface of R1 inner rotor magnetic steel
Inner surface radius of R2 outer rotor magnetic steel
Radius of R3 limit groove
Radius of gyration of R4 spherical pair locating lever
Detailed Description
Specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the disclosure, are not intended to limit the disclosure.
In the present disclosure, unless otherwise specified, the use of azimuth words such as "left and right" generally refer to left and right sides in the axial direction as shown in fig. 1, the use of azimuth words such as "outer" generally refer to a direction axially away from the magnetic coupling surface as shown in fig. 1, and the use of azimuth words such as "inner" generally refer to a direction axially toward the magnetic coupling surface as shown in fig. 1.
In the present disclosure, unless otherwise indicated, the use of qualifiers such as "first, second," etc. merely describe a distinction between relatively descriptive objects and not intended to be a comparison of any degree with one another.
As a preferred embodiment of the present disclosure, a spherical pair universal permanent magnet coupling mainly includes an outer permanent magnet rotor, an inner permanent magnet rotor, a spherical pair positioning element, and the like.
As shown in fig. 1, the outer permanent magnet rotor is rigidly connected with an outer rotor flange shaft sleeve 1 at the left side of the coupler, and comprises an outer rotor carrier 3, outer rotor magnetic steel 4 and the like, wherein the outer rotor flange shaft sleeve 1 is rigidly connected with the outer rotor carrier 3; the outer rotor carrier 3 is spherical, an outer rotor magnetic steel 4 is arranged on the inner spherical surface of the outer rotor carrier 3, and the outer rotor magnetic steel 4 is spherical matched with the inner spherical surface of the outer rotor carrier 3.
The inner permanent magnet rotor is rigidly connected with an inner rotor flange shaft sleeve 7 on the right side of the coupler and comprises an inner rotor carrier 6, an inner rotor magnetic steel 5 and the like, wherein the inner rotor flange shaft sleeve 7 is rigidly connected with the inner rotor carrier 6; the inner rotor carrier 6 is spherical, the outer spherical surface of the inner rotor carrier is provided with inner rotor magnetic steel 5, and the inner rotor magnetic steel 5 is spherical matched with the outer spherical surface of the inner rotor carrier 6.
The outer spherical surface of the outer rotor carrier 3 is connected with the outer rotor flange shaft sleeve 1, the outer rotor flange shaft sleeve 1 is rigidly connected with the input shaft, the outer spherical surface of the inner rotor carrier 6 is connected with the inner rotor flange shaft sleeve 7, and the inner rotor flange shaft sleeve 7 is rigidly connected with the output shaft. In a further embodiment, the outer spherical surface of the outer rotor carrier is connected to the inner rotor flange bushing, and the outer spherical surface of the inner rotor carrier is connected to the outer rotor flange bushing.
In this embodiment, the outer rotor magnetic steel 4 and the inner rotor magnetic steel 5 are respectively formed by splicing three small spherical permanent magnet magnetic steels. As an alternative embodiment, the outer rotor magnet steel 4 and the inner rotor magnet steel 5 may be a monolithic permanent magnet steel. The outer rotor magnetic steel 4 and the inner rotor magnetic steel 5 form spherical magnetic coupling.
The spherical pair universal permanent magnet coupler further comprises a spherical pair positioning element 2, wherein the spherical pair positioning element can be a spherical pair positioning rod, is arranged inside the inner rotor carrier 6, one end of the spherical pair positioning rod is rigidly connected inside the inner rotor carrier 6, the other end of the spherical pair positioning rod is spherical, and a spherical kinematic pair is formed by the spherical pair positioning rod and the inner spherical surface of the outer rotor carrier 3.
Further, a limit groove 8 for sliding the spherical end part of the spherical pair positioning rod can be arranged on the inner spherical surface of the outer rotor carrier.
Wherein, R1 is the outer surface radius of the inner rotor magnetic steel, R2 is the inner surface radius of the outer rotor magnetic steel, R3 is the radius of the limit groove 8, and R4 is the revolution radius of the spherical pair positioning rod. The relationship between the above-mentioned radii is r4=r3 > R2> R1.
In the present disclosure, the outer permanent magnet rotor, the inner permanent magnet rotor and the spherical pair positioning element are required to have a common geometric rotation center, so that interference is minimized when the outer permanent magnet rotor, the inner permanent magnet rotor and the spherical pair positioning element rotate relatively, and installation with large angle errors is facilitated.
In the method, a spherical kinematic pair is formed between the outer permanent magnet rotor and the inner permanent magnet rotor, so that the uniform air gap between the outer permanent magnet rotor and the inner permanent magnet rotor in magnetic steel coupling is ensured, and eccentric adsorption is not caused, so that the outer permanent magnet rotor and the inner permanent magnet rotor are difficult to separate; meanwhile, the outer permanent magnet rotor and the inner permanent magnet rotor in the spherical kinematic pair can rotate independently around a X, Y, Z shaft of a space coordinate system, namely, the spherical kinematic pair has rotational degrees of freedom of X, Y, Z shafts in three directions, as shown in figures 1 and 2.
As shown in fig. 3 and 4, the present disclosure may connect two of the spherical pair permanent magnet couplings in series as described above, thereby forming a spherical pair double-universal permanent magnet coupling, where a common transmission shaft is rigidly connected between inner rotor carriers of the two spherical pair permanent magnet couplings, and the common transmission shaft has a larger allowable angle installation error.
The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings, but the present disclosure is not limited to the specific details of the embodiments described above, and various simple modifications may be made to the technical solutions of the present disclosure within the scope of the technical concept of the present disclosure, and all the simple modifications belong to the protection scope of the present disclosure.
In addition, the specific features described in the foregoing embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, the present disclosure does not further describe various possible combinations.
Moreover, any combination between the various embodiments of the present disclosure is possible as long as it does not depart from the spirit of the present disclosure, which should also be construed as the disclosure of the present disclosure.
Claims (7)
1. The utility model provides a spherical pair universal permanent magnet coupling which characterized in that: the device comprises an outer rotor, an inner rotor and a spherical pair positioning element; the outer rotor and the inner rotor are of spherical structures, wherein the outer rotor comprises an outer rotor carrier and an outer rotor flange shaft sleeve, and outer rotor magnetic steel is arranged in the spherical surface of the outer rotor carrier and is correspondingly spherical; the inner rotor also comprises a spherical inner rotor carrier and an inner rotor flange shaft sleeve, wherein inner rotor magnetic steel is arranged on the outer spherical surface of the spherical inner rotor carrier, and correspondingly, the inner rotor magnetic steel is also spherical; the outer rotor and the inner rotor are positioned through a spherical pair positioning element; the outer rotor, the inner rotor and the spherical pair positioning element have a common geometric rotation center, and the outer rotor and the inner rotor can rotate independently around X, Y, Z shafts of a space coordinate system.
2. A spherical pair universal permanent magnet coupling as claimed in claim 1, wherein: the outer spherical surface of the outer rotor carrier is connected with an outer rotor flange shaft sleeve, the outer rotor flange shaft sleeve is rigidly connected with the input shaft, the outer spherical surface of the inner rotor carrier is connected with an inner rotor flange shaft sleeve, and the inner rotor flange shaft sleeve is rigidly connected with the output shaft.
3. A spherical pair universal permanent magnet coupling as claimed in claim 2, wherein: the spherical pair positioning element is rigidly connected inside the inner rotor.
4. A spherical pair universal permanent magnet coupling as claimed in claim 3, wherein: the spherical pair positioning element is a spherical pair positioning rod, one end of the spherical pair positioning rod is rigidly connected inside the inner rotor, the surface of the other end of the spherical pair positioning rod is a spherical surface, and a spherical kinematic pair is formed by the spherical surface of the spherical pair positioning rod and the inner spherical surface of the outer rotor carrier.
5. A spherical pair universal permanent magnet coupling as claimed in claim 4, wherein: the inner spherical surface of the outer rotor is also provided with a limiting groove for sliding of the spherical end part of the spherical pair positioning rod.
6. A spherical pair universal permanent magnet coupling as claimed in claim 5, wherein: the outer rotor magnetic steel and the inner rotor magnetic steel are respectively formed by splicing a plurality of spherical magnetic steels and form spherical magnetic coupling.
7. The utility model provides a pair of universal permanent magnet coupling of sphere, its characterized in that: coupling two spherical pair universal permanent magnet couplings according to any of claims 1-6 in series, wherein a common drive shaft is rigidly connected between the inner rotor carriers of both spherical pair universal permanent magnet couplings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810133503.4A CN110138178B (en) | 2018-02-08 | 2018-02-08 | Spherical pair universal and double-universal permanent magnet coupler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810133503.4A CN110138178B (en) | 2018-02-08 | 2018-02-08 | Spherical pair universal and double-universal permanent magnet coupler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110138178A CN110138178A (en) | 2019-08-16 |
| CN110138178B true CN110138178B (en) | 2024-05-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810133503.4A Active CN110138178B (en) | 2018-02-08 | 2018-02-08 | Spherical pair universal and double-universal permanent magnet coupler |
Country Status (1)
| Country | Link |
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| CN (1) | CN110138178B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110739828B (en) * | 2019-10-25 | 2020-08-21 | 山东大学 | Ball type permanent magnet coupling |
| CN112366917B (en) * | 2020-11-16 | 2022-02-01 | 合肥工业大学 | Permanent magnet eddy universal transmission device |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1528644A1 (en) * | 1965-12-10 | 1970-12-10 | Beteiligungs Ag Haustechnik | Centrifugal pump |
| JPH10292825A (en) * | 1997-04-17 | 1998-11-04 | Toyota Motor Corp | Universal coupling |
| JP2009063463A (en) * | 2007-09-07 | 2009-03-26 | Ntn Corp | Operation angle sensor for constant velocity universal joint |
| CN201310602Y (en) * | 2008-12-09 | 2009-09-16 | 秦丰伟 | Hemispherical magnetic speed changer |
| JP2010053942A (en) * | 2008-08-28 | 2010-03-11 | Ntn Corp | Operation angle sensor for constant velocity universal joint |
| CN101931308A (en) * | 2009-06-22 | 2010-12-29 | 余亚莉 | Permanent magnet coupling device for cylindrical transmission shaft |
| CN104708495A (en) * | 2015-02-05 | 2015-06-17 | 杭州电子科技大学 | Space double-connecting-rod type ball bar based on ball hinge |
| CN206250950U (en) * | 2016-11-30 | 2017-06-13 | 江苏磁谷科技股份有限公司 | A kind of cantilever style permanent-magnet synchronous coupler |
| CN208078859U (en) * | 2018-02-08 | 2018-11-09 | 江苏磁谷科技股份有限公司 | A kind of spherical pair is universal and double universal permanent magnet clutch |
-
2018
- 2018-02-08 CN CN201810133503.4A patent/CN110138178B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1528644A1 (en) * | 1965-12-10 | 1970-12-10 | Beteiligungs Ag Haustechnik | Centrifugal pump |
| JPH10292825A (en) * | 1997-04-17 | 1998-11-04 | Toyota Motor Corp | Universal coupling |
| JP2009063463A (en) * | 2007-09-07 | 2009-03-26 | Ntn Corp | Operation angle sensor for constant velocity universal joint |
| JP2010053942A (en) * | 2008-08-28 | 2010-03-11 | Ntn Corp | Operation angle sensor for constant velocity universal joint |
| CN201310602Y (en) * | 2008-12-09 | 2009-09-16 | 秦丰伟 | Hemispherical magnetic speed changer |
| CN101931308A (en) * | 2009-06-22 | 2010-12-29 | 余亚莉 | Permanent magnet coupling device for cylindrical transmission shaft |
| CN104708495A (en) * | 2015-02-05 | 2015-06-17 | 杭州电子科技大学 | Space double-connecting-rod type ball bar based on ball hinge |
| CN206250950U (en) * | 2016-11-30 | 2017-06-13 | 江苏磁谷科技股份有限公司 | A kind of cantilever style permanent-magnet synchronous coupler |
| CN208078859U (en) * | 2018-02-08 | 2018-11-09 | 江苏磁谷科技股份有限公司 | A kind of spherical pair is universal and double universal permanent magnet clutch |
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| Publication number | Publication date |
|---|---|
| CN110138178A (en) | 2019-08-16 |
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