CN211425797U - Magnetic bearing rigidity testing arrangement - Google Patents
Magnetic bearing rigidity testing arrangement Download PDFInfo
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- CN211425797U CN211425797U CN201922428388.6U CN201922428388U CN211425797U CN 211425797 U CN211425797 U CN 211425797U CN 201922428388 U CN201922428388 U CN 201922428388U CN 211425797 U CN211425797 U CN 211425797U
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Abstract
The application provides a rigidity testing device of a magnetic bearing, wherein the magnetic bearing comprises a stator component and a rotor; the magnetic bearing rigidity testing device comprises: the bidirectional displacement platform comprises a base, a stator fixing seat, a bidirectional displacement platform, a force sensor and a displacement adjusting piece; the stator fixing seat is arranged on the base, the stator assembly is fixed on the stator fixing seat, the bidirectional displacement platform is arranged on the base and positioned above the stator assembly, and one end of the rotor, which is far away from the stator assembly, is fixed at the center of the bidirectional displacement platform and can drive the bidirectional displacement platform to move bidirectionally; force sensor is provided with four and is the cross symmetry setting, and force sensor is used for detecting the rotor and drives the two-way displacement platform's dynamics of deflecting, and the displacement regulating part is used for adjusting each force sensor's initial test position. Through the mode, the magnetic bearing rigidity testing device has the advantages of being accurate in measurement, convenient to measure and high in measuring effect.
Description
Technical Field
The application relates to the technical field of magnetic bearing rigidity testing, in particular to a magnetic bearing rigidity testing device.
Background
The magnetic bearing is a novel high-performance bearing, and compared with the traditional ball bearing, sliding bearing and oil film bearing, the magnetic bearing has no mechanical contact, and the rotor can reach high running speed. The advantages of small mechanical wear, low energy consumption, low noise, long service life, no lubrication, no oil pollution and the like are achieved, and the device is particularly suitable for special environments such as high speed, vacuum and ultra-clean environments. In addition, the magnetic bearing can also be widely applied to the fields of machining, turbine machinery, aerospace, vacuum technology, rotor dynamics characteristic identification and test and the like, and is known as a novel bearing with great prospect.
In the prior art, theoretical research and experimental measurement of the rigidity of the magnetic bearing are basic work, the rigidity of the magnetic bearing is an important parameter reflecting the performance characteristics of the magnetic bearing, and the rigidity is not only related to the structure of the magnetic bearing but also related to a control system.
SUMMERY OF THE UTILITY MODEL
The device for testing the rigidity of the magnetic bearing is simple to operate, can continuously measure the radial magnetic bearings with different specifications, and provides reliable test data for the design of the radial magnetic bearings.
In order to achieve the purpose, the technical scheme adopted by the application is as follows: a magnetic bearing stiffness testing device, the magnetic bearing including a stator assembly and a rotor, the magnetic bearing stiffness testing device comprising: the bidirectional displacement platform comprises a base, a stator fixing seat, a bidirectional displacement platform, a force sensor and a displacement adjusting piece;
the stator fixing seat is arranged on the base, the stator assembly is fixed on the stator fixing seat, the bidirectional displacement platform is arranged on the base and positioned above the stator assembly, and one end of the rotor, which is far away from the stator assembly, is fixed at the center of the bidirectional displacement platform and can drive the bidirectional displacement platform to move bidirectionally;
the force sensors are arranged in a cross-shaped symmetrical mode and used for detecting the deflection force of the bidirectional displacement platform driven by the rotor, and the displacement adjusting piece is used for adjusting the initial test positions of the force sensors.
In one embodiment, the bi-directional displacement platform comprises: fix Y axle guide rail mechanism on the base, locate Y axle movable plate on the Y axle guide rail mechanism is fixed X axle guide rail mechanism on the Y axle movable plate, and locate X axle movable plate on the X axle guide rail mechanism, the rotor is kept away from stator module's one end is passed the center of Y axle movable plate and is fixed the center of X axle movable plate, four force sensor is first force sensor, second force sensor, third force sensor and fourth force sensor respectively, first force sensor with second force sensor locates respectively the direction of movement's of Y axle movable plate both ends, third force sensor with fourth force sensor locates respectively the direction of movement's of X axle movable plate both ends.
In one embodiment, the displacement adjuster includes: the first adjusting pieces are respectively used for adjusting the initial testing position of the first force sensor and the initial testing position of the second force sensor, and the second adjusting pieces are respectively used for adjusting the initial testing position of the third force sensor and the initial testing position of the fourth force sensor.
In one embodiment, the first adjustment member includes: the first mounting cover is fixed on the side face of the Y-axis moving plate, the first displacement adjusting piece is mounted on the base and movably penetrates through the first mounting cover, and the first force sensor and the second force sensor are respectively movably mounted in the corresponding first mounting cover and driven by the first displacement adjusting piece.
In one embodiment, the second adjusting member includes: locate mounting panel on the Y axle movable plate is fixed in the second installation cover of the side of X axle movable plate, and install on the mounting panel and movable pass the second displacement regulating part of second installation cover, the third force transducer with the fourth force transducer is installed respectively in the second installation cover and by the drive of second displacement regulating part.
In one embodiment, the first displacement adjustment member and the second displacement adjustment member are precision screws, and the precision screws are in threaded connection with the base or the mounting plate.
In one embodiment, the first mounting cover and the second mounting cover are both n-shaped mounting covers, and grooves for movably mounting the force sensors are formed in the n-shaped mounting covers.
In one embodiment, one end of the stator assembly, which is far away from the stator fixing seat, is provided with a rotor positioning plate which is coaxial with the stator fixing seat, and the rotor positioning plate is installed on the stator assembly or on the bidirectional displacement platform.
In one embodiment, the base comprises a reference bottom plate and an outer frame arranged on the reference bottom plate, the outer frame is a rectangular frame, the stator fixing seat is arranged in the center of the outer frame, and the bidirectional displacement platform is arranged at one end of the outer frame, which is far away from the reference bottom plate.
In one embodiment, the magnetic bearing stiffness testing apparatus further comprises a current source for supplying power to the stator assembly and a data processing module for receiving the output signal of the force sensor and calculating a displacement stiffness and a current stiffness.
The application provides a magnetic bearing rigidity testing arrangement has following beneficial effect:
1. the bidirectional displacement platform, the four force sensors and the displacement adjusting piece are matched with each other to measure the bidirectional current rigidity and the displacement rigidity of the same magnetic bearing, so that comprehensive test on a plurality of measured values is realized, and repeated installation is avoided.
2. The initial test position of each force sensor is adjusted through the displacement adjusting piece, so that the requirements on the machining precision and the assembling precision of parts of the device are reduced, and the force measurement precision is improved.
3. When the magnetic bearing is installed, only the stator assembly needs to be installed on the stator fixing seat, and the rotor is fixed on the bidirectional displacement platform, so that the magnetic bearing measuring device has the advantages of convenience in installation and disassembly, and can be used for continuously measuring the magnetic bearings of different models and improving the measuring efficiency.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a magnetic bearing rigidity testing apparatus provided in an embodiment of the present application;
fig. 2 is a schematic top view of a magnetic bearing stiffness testing apparatus provided in an embodiment of the present application;
FIG. 3 is a schematic cross-sectional view taken along line A-A of FIG. 2;
FIG. 4 is a schematic cross-sectional view taken at B-B in FIG. 2;
fig. 5 is a schematic diagram of a partial explosion structure of a force sensor and a displacement adjusting member in a magnetic bearing stiffness testing apparatus according to an embodiment of the present application.
Reference numerals: 1. a base; 11. a reference base plate; 12. an outer frame; 121. a first boss; 122. a second boss; 2. a stator fixing seat; 3. a bi-directional displacement platform; 31. a Y-axis guide rail mechanism; 32. moving the plate along the Y axis; 33. an X-axis guide rail mechanism; 34. moving the plate along the X axis; 4. a force sensor; 41. a first force sensor; 42. a second force sensor; 43. a third force sensor; 44. a fourth force sensor; 5. a displacement adjustment member; 51. a first adjustment member; 511. a first mounting cover; 512. a first displacement adjustment member; 52. a second adjustment member; 521. mounting a plate; 522. a second mounting cover; 523. a second displacement adjustment member; 53. a groove; 6. a magnetic bearing; 61. a stator assembly; 62. a rotor; 7. rotor positioning plate.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application.
In the description of the present application, it is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings, which is for convenience and simplicity of description, and does not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, is not to be considered as limiting.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
Referring to fig. 1 and 2, a magnetic bearing stiffness test apparatus provided herein for measuring the radial stiffness of a magnetic bearing 6, the magnetic bearing 6 including a stator assembly 61 and a rotor 62, will now be described. Specifically, the magnetic bearing rigidity testing device comprises: base 1, stator fixing base 2, two-way displacement platform 3, force sensor 4 and displacement adjustment spare 5. Wherein, stator fixing base 2 locates on base 1, and stator module 61 is fixed on stator fixing base 2, and two-way displacement platform 3 locates on base 1 and is located stator module 61's top, and stator module 61 is kept away from to rotor 62's one end and fixes at two-way displacement platform 3's center and can drive two-way movement of two-way displacement platform 3. All parts of the magnetic bearing rigidity testing device can be made of steel materials, so that the strength and the precision of the magnetic bearing rigidity testing device can be ensured.
Wherein, force sensor 4 is provided with four and is the cross symmetry setting, and force sensor 4 is used for detecting the rotor 62 and drives the two-way displacement platform 3 dynamics of deflecting, and displacement adjusting part 5 is used for adjusting the initial test position of each force sensor 4.
The device for testing the rigidity of the magnetic bearing provided by the embodiment of the application has the following beneficial effects:
1. the bidirectional displacement platform 3, the four force sensors 4 and the displacement adjusting piece 5 are matched with each other to measure the bidirectional current rigidity and the displacement rigidity of the same magnetic bearing 6, so that the comprehensive test of a plurality of measured values is realized, and the repeated installation is avoided.
2. The initial test position of each force sensor 4 is adjusted through the displacement adjusting piece 5, so that the requirements on the machining precision and the assembling precision of parts of the device are reduced, and the force measurement precision is improved.
3. Only need install stator module 61 on stator fixing base 2 during the installation of magnetic bearing 6, rotor 62 is fixed on two-way displacement platform 3, has the convenient advantage of installation and dismantlement to can carry out continuous measurement to the magnetic bearing 6 of different models, improve measurement of efficiency.
As shown in fig. 1, 3 and 4, in the present embodiment, the base 1 includes: a reference bottom plate 11, and an outer frame 12 provided on the reference bottom plate 11. The reference bottom plate 11 is an optical panel to ensure high flatness, or the reference bottom plate 11 is a stainless steel flat plate. The outer frame 12 is a rectangular frame, the stator fixing seat 2 is fixed on the reference bottom plate 11 and located in the center of the outer frame 12, the stator fixing seat 2 is a circular ring fixing seat, and the stator fixing seat 2 and the stator assembly 61 are coaxially arranged. In the present embodiment, the bidirectional displacement table 3 is mounted on an end of the outer frame 12 remote from the reference bottom plate 11 such that the bidirectional displacement table 3 is positioned above the stator assembly 61.
In the present embodiment, the stiffness testing apparatus for the magnetic bearing 6 further includes: a current source for supplying power to the stator assembly 61 and a data processing module for receiving the output signal of the force sensor 4 and calculating the displacement stiffness and the current stiffness.
As shown in fig. 1, 3 and 4, in the present embodiment, the bidirectional displacement platform 3 includes: the X-axis device comprises a Y-axis guide rail mechanism 31 fixed on the base 1, a Y-axis moving plate 32 arranged on the Y-axis guide rail mechanism 31, an X-axis guide rail mechanism 33 fixed on the Y-axis moving plate 32, and an X-axis moving plate 34 arranged on the X-axis guide rail mechanism 33. Specifically, the first bosses 121 are provided on opposite sides of the outer frame 12, and the second bosses 122 are provided on opposite sides of the outer frame, the second bosses 122 having a height smaller than that of the first bosses 121. Two Y-axis guide rail mechanisms 31 are arranged on the Y-axis guide rail mechanisms 31, the two Y-axis guide rail mechanisms 31 are respectively arranged on the surfaces of the corresponding second bosses 122, the Y-axis guide rail mechanisms 31 are only used for realizing the reciprocating movement of the Y-axis moving plate 32 in the Y-axis direction, the X-axis guide rail mechanisms 33 are arranged on the Y-axis moving plate 32 in parallel at intervals, the X-axis moving plate 34 moves along with the movement of the Y-axis moving plate 32, the X-axis guide rail mechanisms 33 are only used for realizing the reciprocating movement of the X-axis moving plate 34 in the X-axis direction, and the Y-axis direction and the X-axis direction. The Y-axis guide rail mechanism 31 and the X-axis guide rail mechanism 33 are both precision guide rail slider structures in the prior art, and the specific structures are not described herein.
As shown in fig. 1, 3 and 4, in the present embodiment, one end of the rotor 62 away from the stator assembly 61 passes through the center of the Y-axis moving plate 32 and is fixed at the center of the X-axis moving plate 34, so that the stator assembly 61, the rotor 62, the Y-axis moving plate 32 and the X-axis moving plate 34 are coaxially arranged, and the test accuracy is ensured. In the present embodiment, the four force sensors 4 are a first force sensor 41, a second force sensor 42, a third force sensor 43 and a fourth force sensor 44, respectively, the first force sensor 41 and the second force sensor 42 are respectively disposed at two ends of the moving direction of the Y-axis moving plate 32 for measuring the displacement stiffness and the current stiffness of the magnetic bearing 6 in the Y-axis direction, and the third force sensor 43 and the fourth force sensor 44 are respectively disposed at two ends of the moving direction of the X-axis moving plate 34 for measuring the displacement stiffness and the current stiffness of the magnetic bearing 6 in the X-axis direction.
As shown in fig. 1, 3 and 4, in the present embodiment, the displacement regulating member 5 includes: two first adjustment members 51 and two second adjustment members 52. Two first adjusting parts 51 are used for adjusting the initial test position of the first force sensor 41 and the initial test position of the second force sensor 42, respectively, and two second adjusting parts 52 are used for adjusting the initial test position of the third force sensor 43 and the initial test position of the fourth force sensor 44, respectively. The four force sensors 4 are initially adjusted in the test position by a single first adjusting piece 51 or a single second adjusting piece 52, so that the measurement accuracy of each force sensor 4 is ensured.
As shown in fig. 1, 3 and 4, the first regulating member 51 includes: a first mounting cover 511 and a first displacement adjusting member 512, wherein the first mounting cover 511 is fixed on the side of the Y-axis moving plate 32, the first displacement adjusting member 512 is mounted on the base 1 and movably passes through the first mounting cover 511, and the first force sensor 41 and the second force sensor 42 are respectively movably mounted in the corresponding first mounting cover 511 and driven by the first displacement adjusting member 512. Specifically, the first displacement adjusting element 512 is mounted on the first boss 121, and when the Y-axis moving plate 32 moves in the Y-axis direction, the first mounting cover 511 is driven to move in the Y-axis direction, and the first force sensor 41 or the second force sensor 42 is pressed against the first displacement adjusting element 512, so that the values of the first force sensor 41 and the second force sensor 42 are changed.
As shown in fig. 1, 3 and 4, the second regulating member 52 includes: the third force sensor 43 and the fourth force sensor 44 are respectively mounted in the corresponding second mounting covers 522 and driven by the second displacement adjusters 523, and include a mounting plate 521 provided on the Y-axis moving plate 32, second mounting covers 522 fixed to the side surfaces of the X-axis moving plate 34, and second displacement adjusters 523 mounted on the mounting plate 521 and movably passing through the second mounting covers 522. Wherein the mounting plate 521 is an L-shaped plate for facilitating mounting thereof on the Y-axis moving plate 32 and facilitating mounting of the second displacement adjuster 523. When the X-axis moving plate 34 moves in the X-axis direction, the second mounting cover 522 is driven to move in the X-axis direction, and the third force sensor 43 or the fourth force sensor 44 presses the second displacement adjusting member 523, so that the values of the third force sensor 43 and the second force sensor 44 are changed.
In this embodiment, the first displacement adjusting member 512 and the second displacement adjusting member 523 are both precision screws, and the precision screws are in threaded connection with the base 1 or the mounting plate 521. Specifically, the first displacement adjusting member 512 is in threaded connection with the first boss 121, and the precision screw has the advantage of high displacement precision, so that the precision of displacement adjustment of the force sensor 4 can be ensured. In other embodiments, the first displacement adjuster 512 and the second displacement adjuster 523 may be air cylinders or hydraulic cylinders. In this embodiment, the displacement amounts of the first displacement adjusting element 512 and the second displacement adjusting element 523 can be measured by a micrometer or a grating, so as to further ensure the measurement accuracy.
As shown in fig. 1 and 5, in the present embodiment, each of the first mounting cover 511 and the second mounting cover 522 is a mounting cover shaped like a Chinese character 'ji', and a recess 53 for movably mounting the force sensor 4 is provided in the mounting cover shaped like a Chinese character 'ji'. In this embodiment, the first mounting cover 511 and the second mounting cover 522 are both detachably fixed by screws, and the groove 53 facilitates a measurer to directly observe the movement of the force sensor 4.
As shown in fig. 1, fig. 3 and fig. 4, in this embodiment, a rotor positioning plate 7 coaxial with the stator fixing base 2 is disposed at one end of the stator assembly 61 away from the stator fixing base 2, the rotor positioning plate 7 is mounted on the stator assembly 61 or on the bidirectional displacement platform 3, and the rotor positioning plate 7 is a circular plate and can be tightly penetrated by one end of the rotor 62 away from the stator assembly 61. Specifically, the installation process of the magnetic bearing 6 is: one end of the rotor 62, which is far away from the stator component 61, penetrates through the rotor positioning plate 7 and the Y-axis moving plate 32, then the stator component 61 is fixed on the stator fixing seat 2, then the rotor positioning plate 7 is fixed on one end of the stator component 61, which is far away from the stator fixing seat 2, at the moment, the stator fixing seat 2 and the rotor positioning plate 7 are used for coaxially fixing the magnetic bearing 6, the requirement of high coaxiality of the stator component 61 and the rotor 62 is guaranteed, then the rotor 62 is fixed in the middle of the X-axis moving plate 34 through screws, and the assembly of.
Current rigidity testing: firstly, the magnetic bearing 6 is assembled according to the installation process of the magnetic bearing 6, then the four force sensors 4 are exerted with the same force through four precise screws, then the rotor positioning plate 7 and the stator component 61 are separated and fixed on the Y-axis moving plate 32 through screws, currents with different directions and different magnitudes are exerted on the magnetic bearing 6 through a current source, at the moment, if the rotor 62 deflects, the numerical value of each force sensor 4 is changed through the bidirectional displacement platform 3, and then the numerical value change corresponding to each force sensor 4 is observed and recorded through the data processing module.
And (3) testing displacement rigidity: firstly, mounting a magnetic bearing 6, fixing a rotor 62 at the central position of a rigidity device of the magnetic bearing, and adjusting four precise screws to apply pre-pressure with the same size to four force sensors 4, wherein the pre-pressure is 5000N;
secondly, adjusting each precision screw to move the rotor 62 to the X-axis direction or the Y-axis direction by a predetermined displacement amount (the predetermined displacement amount may be set as multiple groups, and the numerical value of the predetermined displacement amount may be changed according to the actual situation, which is only illustrated here by way of example) which may be 0.05mm, 0.1mm, 0.2mm, etc., and then passing currents of the same magnitude in the four directions of X1, Y1, X2, and Y2, where the currents are bias currents of 2.5A, and then reading and recording the pressure values of each force sensor 4; wherein X1 and X2 are located in the X-axis direction, and Y1 and Y2 are located in the Y-axis direction;
thirdly, reasonably calculating the electromagnetic force in each direction, wherein the electromagnetic force is reasonably the difference between the pressure values measured by two ends on the X axis, or the electromagnetic force is reasonably the difference between the pressure values measured by two ends on the Y axis;
and fourthly, calculating displacement rigidity, wherein the displacement rigidity is equal to the reasonable/predetermined displacement of the electromagnetic force, and the unit is N/mm.
The utility model provides a magnetic bearing rigidity testing arrangement has simple structure, with low costs, advantage that the commonality is good, and the displacement adjustment of rotor 62 is adjusted through accurate screw rod, guarantees its regulation precision, and Y axle guide rail mechanism 31 and X axle guide rail mechanism 33 adopt accurate guide rail slider structure, and torsional resistance is good, guarantees measurement accuracy.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. A magnetic bearing stiffness testing device, the magnetic bearing including a stator assembly and a rotor, comprising: the bidirectional displacement platform comprises a base, a stator fixing seat, a bidirectional displacement platform, a force sensor and a displacement adjusting piece;
the stator fixing seat is arranged on the base, the stator assembly is fixed on the stator fixing seat, the bidirectional displacement platform is arranged on the base and positioned above the stator assembly, and one end of the rotor, which is far away from the stator assembly, is fixed at the center of the bidirectional displacement platform and can drive the bidirectional displacement platform to move bidirectionally;
the force sensors are arranged in a cross-shaped symmetrical mode and used for detecting the deflection force of the bidirectional displacement platform driven by the rotor, and the displacement adjusting piece is used for adjusting the initial test positions of the force sensors.
2. The magnetic bearing stiffness testing device of claim 1, wherein the bi-directional displacement platform comprises: fix Y axle guide rail mechanism on the base, locate Y axle movable plate on the Y axle guide rail mechanism is fixed X axle guide rail mechanism on the Y axle movable plate, and locate X axle movable plate on the X axle guide rail mechanism, the rotor is kept away from stator module's one end is passed the center of Y axle movable plate and is fixed the center of X axle movable plate, four force sensor is first force sensor, second force sensor, third force sensor and fourth force sensor respectively, first force sensor with second force sensor locates respectively the direction of movement's of Y axle movable plate both ends, third force sensor with fourth force sensor locates respectively the direction of movement's of X axle movable plate both ends.
3. The magnetic bearing stiffness testing device of claim 2, wherein the displacement adjuster comprises: the first adjusting pieces are respectively used for adjusting the initial testing position of the first force sensor and the initial testing position of the second force sensor, and the second adjusting pieces are respectively used for adjusting the initial testing position of the third force sensor and the initial testing position of the fourth force sensor.
4. The magnetic bearing stiffness testing device of claim 3, wherein the first adjustment member comprises: the first mounting cover is fixed on the side face of the Y-axis moving plate, the first displacement adjusting piece is mounted on the base and movably penetrates through the first mounting cover, and the first force sensor and the second force sensor are respectively movably mounted in the corresponding first mounting cover and driven by the first displacement adjusting piece.
5. The magnetic bearing stiffness testing device of claim 4, wherein the second adjustment member comprises: locate mounting panel on the Y axle movable plate is fixed in the second installation cover of the side of X axle movable plate, and install on the mounting panel and movable pass the second displacement regulating part of second installation cover, the third force transducer with the fourth force transducer is installed respectively in the second installation cover and by the drive of second displacement regulating part.
6. The magnetic bearing stiffness testing device of claim 5, wherein the first and second displacement adjusters are precision screws that are threadably connected to the base or the mounting plate.
7. The magnetic bearing stiffness testing device of claim 5, wherein the first mounting cover and the second mounting cover are each a n-shaped mounting cover with a recess therein for removably mounting the force sensor.
8. The device for testing the rigidity of the magnetic bearing according to claim 1, wherein a rotor positioning plate coaxial with the stator fixing seat is arranged at one end of the stator assembly away from the stator fixing seat, and the rotor positioning plate is mounted on the stator assembly or on the bidirectional displacement platform.
9. The magnetic bearing stiffness testing device of any one of claims 1 to 8, wherein the base includes a reference base plate and an outer frame disposed on the reference base plate, the outer frame is a rectangular frame, the stator holder is disposed at a center of the outer frame, and the bidirectional displacement platform is mounted on an end of the outer frame away from the reference base plate.
10. The magnetic bearing stiffness testing device of any one of claims 1 to 8 further comprising a current source for powering the stator assembly and a data processing module for receiving the output signals of the force sensors and calculating displacement stiffness and current stiffness.
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| CN201922428388.6U CN211425797U (en) | 2019-12-28 | 2019-12-28 | Magnetic bearing rigidity testing arrangement |
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| CN201922428388.6U CN211425797U (en) | 2019-12-28 | 2019-12-28 | Magnetic bearing rigidity testing arrangement |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114563184A (en) * | 2022-04-01 | 2022-05-31 | 坎德拉(深圳)新能源科技有限公司 | Integrated testing device for single-degree-of-freedom magnetic suspension bearing |
| CN116858172A (en) * | 2023-09-05 | 2023-10-10 | 苏州中科科仪技术发展有限公司 | Radial stator performance detection tool and detection method of magnetic suspension molecular pump |
-
2019
- 2019-12-28 CN CN201922428388.6U patent/CN211425797U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114563184A (en) * | 2022-04-01 | 2022-05-31 | 坎德拉(深圳)新能源科技有限公司 | Integrated testing device for single-degree-of-freedom magnetic suspension bearing |
| CN116858172A (en) * | 2023-09-05 | 2023-10-10 | 苏州中科科仪技术发展有限公司 | Radial stator performance detection tool and detection method of magnetic suspension molecular pump |
| CN116858172B (en) * | 2023-09-05 | 2023-11-14 | 苏州中科科仪技术发展有限公司 | Radial stator performance detection tool and detection method of magnetic suspension molecular pump |
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Effective date of registration: 20221103 Address after: 225100 501, Xingchuangtiandi Science Park, No. 1468, Wenchang East Road, Xiannv Town, Jiangdu District, Yangzhou City, Jiangsu Province Patentee after: Kandera New Energy Technology (Yangzhou) Co.,Ltd. Address before: 518000 3601, 36th floor, Shenzhen Bay venture capital building, Yuehai street, Nanshan District, Shenzhen City, Guangdong Province Patentee before: Candela (Shenzhen) New Energy Technology Co.,Ltd. |