CN215952931U - Impact resistance testing equipment for foil air bearing - Google Patents
Impact resistance testing equipment for foil air bearing Download PDFInfo
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- CN215952931U CN215952931U CN202122436478.7U CN202122436478U CN215952931U CN 215952931 U CN215952931 U CN 215952931U CN 202122436478 U CN202122436478 U CN 202122436478U CN 215952931 U CN215952931 U CN 215952931U
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Abstract
The application discloses foil air bearing's anti test equipment that shocks resistance, this anti test equipment that shocks resistance includes: a bearing seat; the rotating mechanism comprises a rotating shaft and an eccentric sleeve, the eccentric sleeve is sleeved on the rotating shaft, and the foil air bearing is sleeved on the eccentric sleeve; and the sensor module comprises an acceleration sensor and a displacement sensor. According to the anti-impact testing equipment for the foil air bearing, the eccentric sleeve is sleeved on the rotating shaft, and is sleeved on the bearing seat, when a test is needed, the rotating shaft can drive the eccentric sleeve to rotate when rotating, the eccentric sleeve can impact the foil air bearing in the bearing seat, and displacement and acceleration brought by impact are collected by the displacement sensor and the acceleration sensor of the sensor module, so that the anti-impact performance of the foil air bearing can be evaluated in an auxiliary mode according to the displacement and the acceleration.
Description
Technical Field
The disclosure relates to the field of test equipment, in particular to impact resistance test equipment for a foil air bearing.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
The foil air bearing serving as a novel bearing has the advantages of high rotating speed, good adaptability, low manufacturing precision requirement, good stability, low maintenance cost and the like, and is widely applied to high-speed rotating machinery such as air suspension centrifugal blowers, compressors, airplane environment control systems, hydrogen fuel cell air compressors and the like.
In the practical use of the foil air bearing, different working conditions are often met, wherein the mechanism is often subjected to impacts, such as vibration generated by potholes during the running of a hydrogen energy automobile, turbulent vibration of an airplane and the like, and whether the impacts affect the stable use of the foil air bearing or not is often met.
SUMMERY OF THE UTILITY MODEL
In view of the above, there is a need for an impact resistance testing apparatus for a foil air bearing to assist in testing the impact resistance of the foil air bearing.
The present disclosure provides an impact resistance testing apparatus of a foil air bearing, comprising:
the bearing seat is used for accommodating the foil air bearing;
the rotating mechanism comprises a rotating shaft and an eccentric sleeve, the eccentric sleeve is sleeved on the rotating shaft, the foil air bearing is sleeved on the eccentric sleeve, and the rotating shaft drives the eccentric sleeve to rotate so as to impact the foil air bearing;
the sensor module comprises an acceleration sensor and a displacement sensor, the acceleration sensor is used for detecting the acceleration of the rotating shaft under the impact of the eccentric sleeve, and the displacement sensor is used for detecting the radial displacement of the rotating shaft under the impact of the eccentric sleeve.
Preferably, the bearing seat comprises an inner ring fixing sleeve and an outer ring fixing sleeve, the inner ring fixing sleeve is used for installing the foil air bearing, and the inner ring fixing sleeve is sleeved in the outer ring fixing sleeve and is coaxially and rotatably connected to the outer ring fixing sleeve.
Preferably, the bearing seat further includes an intermediate assembly, the intermediate assembly includes a first bearing, and the first bearing sleeve is disposed between the inner ring fixing sleeve and the outer ring fixing sleeve, so that the inner ring fixing sleeve is rotatably connected to the outer ring fixing sleeve through the first bearing.
Preferably, the intermediate assembly further includes a second bearing and a spacer sleeve, the second bearing is sleeved between the inner ring fixing sleeve and the outer ring fixing sleeve, and the spacer sleeve is sleeved on the inner ring fixing sleeve and located between the first bearing and the second bearing, so that the inner ring fixing sleeve is rotatably connected to the outer ring fixing sleeve through the first bearing and the second bearing.
Preferably, the rotating mechanism comprises a motor and a support, the rotating shaft is rotatably connected to the support, one end of the rotating shaft extends out of the support and is connected to the motor, and the other end of the rotating shaft is sleeved on the eccentric sleeve.
Preferably, the acceleration sensor is connected to the outer ring fixing sleeve for detecting acceleration of the foil air bearing.
Preferably, the displacement sensor is close to the rotating shaft in a radial direction of the rotating shaft to detect a radial displacement of the rotating shaft.
Preferably, the displacement sensor includes two displacement sensors, one of which is close to the rotating shaft in a vertical direction to detect a displacement of the rotating shaft in the vertical direction, and the other of which is close to the rotating shaft in a horizontal direction to detect a displacement of the rotating shaft in the horizontal direction.
Preferably, the acceleration sensor includes two, one of which is connected to the outer ring retainer in a vertical direction to detect acceleration in the vertical direction, and the other of which is connected to the outer ring retainer in a horizontal direction to detect acceleration in the horizontal direction.
Preferably, the eccentricity of the eccentric sleeve is 0.02-0.1 mm.
Compared with the prior art, the anti-impact testing equipment for the foil air bearing has the advantages that the eccentric sleeve is sleeved on the rotating shaft, the eccentric sleeve is sleeved on the bearing seat, when the test is needed, the rotating shaft can drive the eccentric sleeve to rotate when rotating, the eccentric sleeve can impact the foil air bearing in the bearing seat, displacement and acceleration brought by the impact are collected by the displacement sensor and the acceleration sensor of the sensor module, and therefore the anti-impact performance of the foil air bearing can be evaluated in an auxiliary mode according to the displacement and the acceleration.
Drawings
In order to illustrate the embodiments more clearly, the drawings that will be needed in the description of the embodiments will be briefly described below, it being apparent that the drawings in the following description are some examples of the disclosure, and that other drawings may be derived from those drawings by a person skilled in the art without inventive effort.
FIG. 1 is a schematic view of the structure of an impact resistance testing apparatus for a foil air bearing.
FIG. 2 is a schematic cross-sectional view of an impact resistance testing apparatus for a foil air bearing.
Fig. 3 is a schematic structural view of the rotating mechanism.
Fig. 4 is a schematic structural view of the bearing housing in a disassembled state.
Fig. 5 is a schematic structural view of a bearing housing and a sensor module.
Description of the main elements
| |
10 |
| Outer |
11 |
| Inner |
12 |
| |
13 |
| Second bearing | 14 |
| |
141 |
| First bearing | 15 |
| |
151 |
| |
20 |
| |
21 |
| |
30 |
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31 |
| |
40 |
| |
50 |
| |
51 |
The following detailed description will further illustrate the disclosure in conjunction with the above-described figures.
Detailed Description
In order that the above objects, features and advantages of the present disclosure can be more clearly understood, a detailed description of the present disclosure will be given below with reference to the accompanying drawings and detailed description. In addition, the embodiments and features of the embodiments of the present application may be combined with each other without conflict. In the following description, numerous specific details are set forth to provide a thorough understanding of the present disclosure, and the described embodiments are merely a subset of the embodiments of the present disclosure, rather than a complete embodiment. All other embodiments, which can be derived by one of ordinary skill in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used in the description herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure.
In various embodiments, for convenience in description and not limitation of the disclosure, the term "coupled" as used in the specification and claims of the present disclosure is not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships are changed accordingly.
Fig. 1 is a schematic structural view of an impact resistance testing apparatus of a foil air bearing, and fig. 2 is a schematic sectional structural view of the impact resistance testing apparatus of the foil air bearing. The anti-impact test equipment of the foil air bearing is used for assisting in testing the anti-impact performance of the foil air bearing, and particularly, the anti-impact performance of the foil air bearing is evaluated according to parameters such as displacement parameters, acceleration parameters and deformation of the foil air bearing under the action of external impact. As shown in fig. 1 and 2, the apparatus for testing the impact resistance of the foil air bearing includes a bearing housing 10, a rotating mechanism, and a sensor module, wherein the bearing housing 10 is used for mounting the foil air bearing, the rotating module is used for rotating the foil air bearing mounted in the bearing housing 10 and providing an impact force to the foil air bearing, and the sensor module is used for testing various test parameters of the foil air bearing under the impact force.
Fig. 3 is a schematic structural view of a rotating mechanism, as shown in fig. 1 to 3, including a base 40, a motor 50, a rotating shaft 20, and an eccentric sleeve 21. The base 40 is used for mounting the motor 50, the rotating shaft 20 and other components, in the present embodiment, the base 40 has a substantially U-shaped structure, the motor 50 is mounted at the rear end (i.e., the end where the motor 50 is located), and the output shaft of the motor 50 extends out from the rear end to the opening position in the middle. The front end of the base 40 (i.e., the end portion where the rotating shaft 20 is installed) is rotatably connected to the rotating shaft 20, the rotating shaft 20 is rotatably connected to the front end of the base 40, and both ends respectively extend from the front end of the base 40, i.e., the rear end of the rotating shaft 20 extends out of an opening position in the middle of the base 40, and the front end extends out from the front end of the base 40. In order to pull the rotating shaft 20 to rotate, in this embodiment, the rotating mechanism further includes a coupler 51, and an output shaft of the motor 50 is connected to the rotating shaft 20 through the coupler 51 at the position of the opening of the base 40, so that the motor 50 can drive the rotating shaft 20 to rotate at a high speed through the coupler 51, and has better stability. The outer circle of the eccentric sleeve 21 is parallel to the axis of the inner bore without coinciding with the axis, and the distance between the two parallel axes is called eccentricity. In some preferred embodiments, the eccentricity of the eccentric sleeve 21 is preferably 0.02 to 0.1 mm. In this embodiment, the inner hole of the eccentric sleeve 21 is coaxially installed on the rotating shaft 20, so that the rotating shaft 20 can drive the eccentric sleeve 21 to rotate at a high speed. Meanwhile, the outer circle of the eccentric sleeve 21 is sleeved on the foil air bearing, and the eccentric sleeve 21 can apply preset impact force to the foil air bearing when the rotating shaft 20 drives the eccentric sleeve 21 to rotate.
Fig. 4 is a schematic structural view of the bearing housing 10 in a disassembled state. As shown in fig. 1, 2 and 4, the bearing seat 10 is used for accommodating a foil air bearing, so that the foil air bearing is installed in the bearing seat 10, and the foil air bearing is sleeved on an outer circle of an eccentric sleeve 21, the rotating shaft 20 drives the eccentric sleeve 21 to rotate to impact the foil air bearing, and thus, an impact force can be applied to the foil air bearing through the eccentric sleeve 21 to test the impact resistance of the foil air bearing.
The bearing seat 10 comprises an outer ring fixing sleeve 11, an intermediate assembly and an inner ring fixing sleeve 12, wherein the intermediate assembly is arranged between the inner ring fixing sleeve 12 and the outer ring fixing sleeve 11, so that the inner ring fixing sleeve 12 and the outer ring fixing sleeve 11 can rotate coaxially relatively, and the sensor module is installed on the outer ring fixing sleeve 11 and the inner ring fixing sleeve 12 and used for testing one or more parameters of the radial direction of the radial foil gas bearing to complete the radial test of the radial foil gas bearing.
As shown in fig. 4, the outer ring retainer 11 is substantially cylindrical and has a through hole extending therethrough in an axial direction. At least one end of the outer ring fixing sleeve 11 is provided with a baffle 141, and the baffle 141 can be connected to the end surface of the outer ring fixing sleeve 11 through one or more connectors. In this embodiment, the baffle 141 has a through hole coaxial with the outer ring fixing sleeve 11 but having an inner diameter smaller than that of the outer ring fixing sleeve 11, so that the baffle 141 can stop the components inside the outer ring fixing sleeve 11 along the circumferential direction.
The inner ring fixture sleeve 12 is used to mount the radial foil gas bearing. The inner ring fixing sleeve 12 is substantially cylindrical and has a through hole penetrating in the axial direction. A foil air bearing may be fitted into the through hole and secured by the wafer. The pressing sheet is of a sheet-like structure and can be fixed on the end surface of the inner ring fixing sleeve 12 through screws, so that the foil air bearing can be fixed. And, the radial dimension of the middle part of the inner ring fixing sleeve 12 is larger than the radial dimension of the two ends, forming a 'convex' structure for mounting the middle component.
The intermediate assembly is connected to the outer side of the inner ring fixing sleeve 12 in the radial direction and the inner side of the outer ring fixing sleeve 11 in the radial direction, i.e., between the inner ring fixing sleeve 12 and the outer ring fixing sleeve 11, so that the inner ring fixing sleeve 12 and the outer ring fixing sleeve 11 can rotate coaxially and relatively at high speed. The intermediate assembly comprises a first bearing 15, a second bearing 14 and a spacer 13. The first bearing 15 and the second bearing 14 are deep groove ball bearings, are respectively sleeved at two ends of the inner ring fixing sleeve 12 and are located between the inner ring fixing sleeve 12 and the outer ring fixing sleeve 11, so that the inner ring fixing sleeve 12 is rotationally connected to the outer ring fixing sleeve 11 through the first bearing 15. In order to stop the first bearing 15, the intermediate assembly further includes a retainer ring 151, and the retainer ring 151 is connected between the inner end surface of the outer ring retainer 11 and the outer end surface of the first bearing 15 to retain the first bearing 15 in the axial direction of the first bearing 15. The spacer 13 is sleeved on the inner ring fixing sleeve 12 and located between the first bearing 15 and the second bearing 14, so that the first bearing 15 and the second bearing 14 can be isolated.
Fig. 5 is a schematic structural view of the bearing housing 10 and the sensor module. As shown in fig. 1, 2 and 5, the sensor module includes an acceleration sensor 31 and a displacement sensor 30, wherein the acceleration sensor 31 is used for detecting the acceleration of the rotating shaft 20 under the impact of the eccentric sleeve 21, the displacement sensor 30 is used for detecting the radial displacement of the rotating shaft 20 under the impact of the eccentric sleeve 21, and the impact resistance of the foil air bearing is tested by the radial displacement detected by the displacement sensor 30 and the acceleration detected by the acceleration sensor 31, and the deformation amount of the foil air bearing. In this embodiment, the acceleration sensor 31 is connected to the outer ring fixing sleeve 11 and is configured to detect an acceleration of the foil air bearing. Specifically, the acceleration sensor 31 includes two, one of which is connected to the outer ring retainer 11 in the vertical direction to detect acceleration in the vertical direction, and the other of which is connected to the outer ring retainer 11 in the horizontal direction to detect acceleration in the horizontal direction.
The displacement sensor 30 is close to the rotating shaft 20 in the radial direction of the rotating shaft 20 to detect the radial displacement of the rotating shaft 20. The displacement sensor 30 may be an eddy current displacement sensor 30, and may be plural, and end portion near the rotating shaft 20. In the present embodiment, the displacement sensor 30 is substantially a rod-shaped structure, and during the use process, the distance between the end of the displacement sensor 30 and the rotating shaft 20 can be adjusted according to actual needs, so that the displacement sensor 30 can sense the position of the rotating shaft 20 to measure the displacement of the rotating shaft 20. In the present embodiment, the displacement sensor 30 includes two displacement sensors, one of which is close to the rotating shaft 20 along the vertical direction to detect the displacement of the rotating shaft 20 along the vertical direction, and the other of which is close to the rotating shaft 20 along the horizontal direction to detect the displacement of the rotating shaft 20 along the horizontal direction.
When the foil air bearing shock resistance testing device works, after the shock resistance testing device of the foil air bearing is installed and debugged, the motor 50 is started, the motor 50 drives the rotating shaft 20 and the eccentric sleeve 21 to rotate, and at the moment, the eccentric sleeve 21 can impact the foil air bearing in the bearing seat 10.
The displacement caused by the impact can be detected by two displacement sensors 30 arranged in the vertical direction and the horizontal direction, and the acceleration will be detected by two acceleration sensors 31 arranged in the vertical direction and the horizontal direction. And then, transmitting the acquired displacement signals and the acceleration parameters to a computer for processing.
After the test is finished, taking down and measuring various parameters of the bump foil and the top foil of the foil air bearing to be compared, obtaining the deformation amount of the foil air bearing, and evaluating the shock resistance of the foil air bearing by combining data processed by a computer.
According to the anti-impact test equipment for the foil air bearing, the eccentric sleeve 21 is sleeved on the rotating shaft 20, the eccentric sleeve 21 is sleeved on the bearing seat 10, when a test is needed, the rotating shaft 20 can drive the eccentric sleeve 21 to rotate when rotating, the eccentric sleeve 21 can impact the foil air bearing in the bearing seat 10, and displacement and acceleration brought by impact are collected by the displacement sensor 30 and the acceleration sensor 31 of the sensor module, so that the anti-impact performance of the foil air bearing can be evaluated in an auxiliary mode according to the displacement and the acceleration. The impact resistance testing equipment provided by the embodiment is convenient to install and debug, low in cost and good in universality, the influence of impact on the foil air bearing can be stamped, and the shafting can test experiments such as load capacity besides the impact working condition.
In several embodiments provided in the present disclosure, it will be apparent to those skilled in the art that the present disclosure is not limited to the details of the above-described exemplary embodiments, and can be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the disclosure being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Furthermore, it is obvious that the word "comprising" does not exclude other elements or steps, and the singular does not exclude the plural. The terms first, second, etc. are used to denote names, but not any particular order.
Although the present disclosure has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the present disclosure.
Claims (10)
1. An apparatus for impact testing of a foil air bearing, comprising:
the bearing seat is used for accommodating the foil air bearing;
the rotating mechanism comprises a rotating shaft and an eccentric sleeve, the eccentric sleeve is sleeved on the rotating shaft, the foil air bearing is sleeved on the eccentric sleeve, and the rotating shaft drives the eccentric sleeve to rotate so as to impact the foil air bearing;
the sensor module comprises an acceleration sensor and a displacement sensor, the acceleration sensor is used for detecting the acceleration of the rotating shaft under the impact of the eccentric sleeve, and the displacement sensor is used for detecting the radial displacement of the rotating shaft under the impact of the eccentric sleeve.
2. The apparatus for impact testing of a foil air bearing of claim 1 wherein said bearing housing includes an inner race fixture sleeve for mounting said foil air bearing and an outer race fixture sleeve disposed within and coaxially rotationally coupled to said outer race fixture sleeve.
3. The foil air bearing shock resistance test apparatus of claim 2, wherein the bearing housing further comprises an intermediate assembly including a first bearing nested between the inner and outer ring retainers such that the inner ring retainer is rotationally coupled to the outer ring retainer by the first bearing.
4. The foil air bearing shock resistance testing apparatus of claim 3, wherein said intermediate assembly further comprises a second bearing and a spacer, said second bearing being nested between said inner and outer race fixture sleeves, said spacer being nested within said inner race fixture sleeve and being located between said first and second bearings such that said inner race fixture sleeve is rotationally coupled to said outer race fixture sleeve by said first and second bearings.
5. The foil air bearing impact resistance test apparatus of claim 4, wherein the rotation mechanism comprises a motor and a support, the shaft is rotatably connected to the support, and one end of the shaft extends from the support and is connected to the motor, and the other end of the shaft is sleeved on the eccentric sleeve.
6. The apparatus for impact testing of a foil air bearing of claim 5 wherein said acceleration sensor is attached to said outer race fixture sleeve for sensing acceleration of said foil air bearing.
7. The foil air bearing impact resistance test apparatus of claim 6, wherein the displacement sensor is adjacent to the shaft in a radial direction of the shaft to detect a radial displacement of the shaft.
8. The foil air bearing impact resistance test apparatus of claim 7, wherein the displacement sensor includes two, one being vertically adjacent to the shaft to detect a displacement of the shaft in a vertical direction and the other being horizontally adjacent to the shaft to detect a displacement of the shaft in a horizontal direction.
9. The foil air bearing shock resistance test apparatus of claim 8, wherein said acceleration sensor includes two, one of which is connected to said outer ring fixture in a vertical direction to detect acceleration in the vertical direction and the other of which is connected to said outer ring fixture in a horizontal direction to detect acceleration in the horizontal direction.
10. The foil air bearing impact resistance test apparatus of claim 9, wherein the eccentricity of the eccentric sleeve is 0.02 to 0.1 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122436478.7U CN215952931U (en) | 2021-10-09 | 2021-10-09 | Impact resistance testing equipment for foil air bearing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122436478.7U CN215952931U (en) | 2021-10-09 | 2021-10-09 | Impact resistance testing equipment for foil air bearing |
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| CN215952931U true CN215952931U (en) | 2022-03-04 |
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| CN202122436478.7U Active CN215952931U (en) | 2021-10-09 | 2021-10-09 | Impact resistance testing equipment for foil air bearing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113916484A (en) * | 2021-10-09 | 2022-01-11 | 东莞青锐科技有限公司 | Impact resistance testing equipment for foil air bearing |
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2021
- 2021-10-09 CN CN202122436478.7U patent/CN215952931U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113916484A (en) * | 2021-10-09 | 2022-01-11 | 东莞青锐科技有限公司 | Impact resistance testing equipment for foil air bearing |
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Address after: 523808 Room 301, building 2, No. 8, North 1st Street, Dalingshan lake, Dalingshan Town, Dongguan City, Guangdong Province Patentee after: Dongguan Qingrui Technology Co.,Ltd. Address before: 523852 room 229, building 6, No. 96, Chang'an Zhen'an East Road, Chang'an Town, Dongguan City, Guangdong Province Patentee before: Dongguan Qingrui Technology Co.,Ltd. |
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