CN220552607U - Comprehensive test bed for air foil radial bearing performance - Google Patents
Comprehensive test bed for air foil radial bearing performance Download PDFInfo
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- CN220552607U CN220552607U CN202321681761.9U CN202321681761U CN220552607U CN 220552607 U CN220552607 U CN 220552607U CN 202321681761 U CN202321681761 U CN 202321681761U CN 220552607 U CN220552607 U CN 220552607U
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- radial bearing
- foil radial
- sensor support
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Abstract
The utility model relates to an air foil radial bearing performance comprehensive test bed which comprises a base, a power device, a loading device, a measuring device, a tested air foil radial bearing, a bearing seat and a moment rod. The power device consists of an electric spindle, an electric spindle clamp, a rotating shaft and a chuck nut; the loading device consists of a pulley yoke, a fixed pulley, a rigid rope and a heavy object, an electric control system is avoided, the structure is simple and reliable, the manufacturing and maintenance cost is low, the dead weights of a bearing to be tested, a bearing seat and a moment rod can be balanced by forming a vertical upward loading force by the fixed pulley and the heavy object, so that a test condition close to zero load is realized, and the loading range of a test bed is enlarged; and the motorized spindle is controlled by the timing relay and the frequency converter, so that the automatic test of the service life of the bearing is realized.
Description
Technical Field
The utility model relates to the technical field of gas lubrication, in particular to an air foil radial bearing performance comprehensive test bed with low cost and wide loading range.
Background
An air foil bearing is a self-acting sliding bearing with a flexible bearing surface using air as a lubricating medium. In the start-stop stage with lower rotating speed, the axle journal is in direct contact with the top foil, and the friction between the top foil and the axle journal can be reduced by the coating on the top foil and the axle journal; in the stable operation stage with higher rotating speed, the dynamic pressure lubrication air film between the top foil and the journal can provide supporting force for the journal to make the journal in a 'suspension' state, thereby greatly reducing friction loss and prolonging the service life of the bearing. Compared with the traditional oil lubrication bearing, the air foil bearing has the advantages of no oil, small volume, low friction power consumption, long service life, good self-adaptability, strong vibration and impact resistance, low maintenance cost and the like, and is particularly suitable for supporting a high-speed rotor.
The air foil radial bearing performance test bed is an important device for testing the performance of the air foil radial bearing, and can be used for evaluating the design and manufacturing process of the foil bearing and providing optimization guidance. The prior disclosed patent about the air foil radial bearing performance test bed generally has the technical problems of single measurement parameter, complex loading device structure, narrow loading range, low automation degree and poor flexibility of part replacement.
Disclosure of Invention
In order to solve the technical problems, the utility model provides the comprehensive test bed for the performance of the air foil radial bearing, which can meet the requirements of flexible, reliable and low-cost comprehensive evaluation of the performance of the air foil radial bearing.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
the utility model provides an air foil radial bearing performance integrated test platform, includes base, power device, loading device, measuring device and measured air foil radial bearing, bearing frame and moment pole, power device, loading device, measuring device are fixed in on the base.
Preferably, the power device comprises an electric spindle, an electric spindle clamp, a rotating shaft and a chuck nut, wherein the electric spindle is fixed on the base through the electric spindle clamp, the rotating shaft is connected with the electric spindle through the chuck nut, and the rotating shaft is matched with the working surface of the tested air foil radial bearing.
Preferably, the electric spindle dissipates heat in an air cooling or water cooling mode.
Preferably, the electric spindle is controlled through a frequency converter, and the automatic test of the service life of the bearing is realized by matching with a timing relay.
Preferably, the loading device comprises a pulley frame, a pair of fixed pulleys, a rigid rope and a weight, wherein the pulley frame is fixed on the base, the fixed pulleys are fixed on the pulley frame, the rigid rope is wound on the fixed pulleys, one end of the rigid rope is connected with the weight, and the other end of the rigid rope is connected with the bearing seat.
Preferably, the rigid rope is connected with the bearing seat through a lifting screw.
Preferably, the measuring device comprises a pair of displacement sensors, a displacement sensor support, a pressure sensor support, a rotation speed sensor support and a data acquisition device, wherein the displacement sensor support is fixed on the base, the pair of displacement sensors are fixed on the displacement sensor support to form a measuring plane for measuring the displacement of the bearing seat, the pressure sensor support is fixed on the base, the pressure sensor is fixed on the pressure sensor support, the rotation speed sensor support is fixed on the base, and the rotation speed sensor is fixed on the rotation speed sensor support for measuring the rotation speed of the rotating shaft.
Preferably, a reflective strip is attached to the rotating shaft or the collet nut, and the position of the rotation speed sensor is aligned with the reflective strip.
Preferably, the data acquisition device is composed of a multichannel data acquisition card and a computer and is used for acquiring and recording measurement signals of the displacement sensor, the pressure sensor and the rotating speed sensor.
Preferably, the tested air foil radial bearing is installed in the bearing seat, one end of the moment rod is fixed on the bearing seat through threaded connection, and the other end of the moment rod is lapped on a force measuring point of the pressure sensor.
Preferably, the mounting positions of the pulley frame, the displacement sensor bracket and the rotation speed sensor bracket can be adjusted through a groove structure at the joint.
The utility model has the beneficial effects that:
1. the loading device consists of a pulley frame, a fixed pulley, a rigid rope and a heavy object, an electric control system is avoided, the structure is simple and reliable, the manufacturing and maintenance cost is low, the dead weights of the tested air foil bearing, the bearing seat and the moment rod can be balanced by forming a vertical upward loading force by the fixed pulley and the heavy object, so that the testing condition close to zero load is realized, and the loading range of the test bed is enlarged.
2. The measuring device comprises a displacement sensor, a pressure sensor and a rotating speed sensor, can realize synchronous measurement and recording of multiple performance data of the air foil radial bearing, and meets the comprehensive test requirements of key performances such as the take-off rotating speed, the ultimate bearing capacity, the eccentricity, the friction factor, the start-stop service life and the like of the bearing.
3. And the electric spindle is controlled by the timing relay and the frequency converter, so that the automatic test of the service life of the bearing is realized, and the test safety and efficiency are improved.
4. And the modularized design is adopted, so that the replacement and upgrading of parts are facilitated, and the maintenance and transformation cost is reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the drawings that are required to be used in the description of the embodiments will be briefly described below.
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
FIG. 2 is a schematic diagram of a loader configuration;
FIG. 3 is a schematic diagram of a displacement measuring device;
FIG. 4 is a schematic diagram of a pressure measurement device;
FIG. 5 is a schematic diagram of a measuring device;
1, a base; 2. a weight; 3. a rigid rope; 4. a pulley frame; 5. a fixed pulley; 6. a displacement sensor; 7. a displacement sensor support; 8. a bearing seat; 9. a torque rod; 10. a pressure sensor; 11. a radial bearing of the tested air foil; 12. a rotating shaft; 13. an electric spindle clamp; 14. an electric spindle; 15. a collet nut; 16. a rotation speed sensor; 17. a rotational speed sensor bracket; 18. a pressure sensor support.
Detailed Description
The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.
As shown in fig. 1, the utility model provides an air foil radial bearing performance comprehensive test bed, which comprises a base (1), a power device, a loading device, a measuring device, a tested air foil radial bearing (11), a bearing seat (8) and a moment rod (9), wherein the power device, the loading device and the measuring device are fixed on the base (1).
The power device comprises an electric spindle (14), an electric spindle clamp (13), a rotating shaft (12) and a collet nut (15), wherein the working voltage of the electric spindle (14) is 380V, the rated power is 5.5kW, the rated rotating speed is 24000rpm, the electric spindle clamp (13) is fixed on the base (1), the rotating shaft (12) is connected with the electric spindle (14) through the collet nut (15), the rotating shaft (12) is matched with the working surface of the tested air foil radial bearing (11), the electric spindle (14) dissipates heat in a water cooling mode, and the long-time running stability can be improved, and the electric spindle is characterized in that: the external water pump and the water tank realize the circulation heat dissipation. The electric spindle (14) is controlled through a 380V three-phase frequency converter, and the acceleration time and the deceleration time of the electric spindle (14) can be controlled by matching with a timing relay, so that the automatic test of the service life of the bearing is realized.
As shown in fig. 2, the loading device comprises a pulley frame (4), a pair of fixed pulleys (5), a rigid rope (3) and a weight (2), wherein the pulley frame (4) is fixed on the base (1), the fixed pulleys (5) are fixed on the pulley frame (4), the rigid rope (3) is wound on the pair of fixed pulleys (5), one end of the rigid rope is connected with the weight (2), the other end of the rigid rope is connected with the bearing seat (8) through a lifting ring screw, and the loading force can be quickly adjusted by changing the weight of the weight (2). The loading device avoids an electric control system, is simple and reliable in structure and low in manufacturing and maintenance cost, and can balance the dead weights of the tested air foil bearing (11), the bearing seat (8) and the moment rod (9) by forming vertical upward loading force with the fixed pulley (5) and the heavy object (2) so as to realize testing conditions close to zero load and enlarge the loading range of the test bed.
The measuring device comprises a pair of displacement sensors (6), a displacement sensor bracket (7), a pressure sensor (10), a pressure sensor bracket (18), a rotating speed sensor (16), a rotating speed sensor bracket (17) and a data acquisition device.
As shown in fig. 3, the displacement sensor support (7) is fixed on the base (1), the pair of displacement sensors (6) is fixed on the displacement sensor support (7) through angle steel, and the measurement directions of the two displacement sensors (6) are vertical to form a measurement plane, so that the measurement of the displacement of the bearing seat (8) is realized.
As shown in fig. 4, the pressure sensor bracket (18) is fixed on the base (1), the pressure sensor (10) is fixed on the pressure sensor bracket (18), one end of the moment rod (9) is fixed on the bearing seat (8) through threaded connection, and the other end thereof is lapped on the pressure sensor (10), so that the measurement of the friction moment of the tested air foil radial bearing (11) is realized.
The rotating speed sensor bracket (17) is fixed on the base (1), the rotating speed sensor (16) is fixed on the rotating speed sensor bracket (17), the rotating shaft (12) or the chuck nut (15) is stuck with a reflecting strip, and the position of the rotating speed sensor (16) is aligned with the reflecting strip to realize the measurement of the rotating speed of the rotating shaft (12).
As shown in fig. 5, the data acquisition device is composed of a multichannel data acquisition card and a computer, the data acquisition card is used for performing a/D conversion on measurement signals of the displacement sensor (6), the pressure sensor (10) and the rotation speed sensor (16), the converted digital signals are input into the computer for storage, and after-treatment such as filtering is performed on the signals, various performance parameters of the tested air foil radial bearing (11) can be obtained through conversion.
Claims (8)
1. The utility model provides an air foil radial bearing performance integrated test platform which characterized in that: the device comprises a base (1), a power device, a loading device, a measuring device, a tested air foil radial bearing (11), a bearing seat (8) and a moment rod (9);
a power device; the power device comprises an electric spindle (14), an electric spindle clamp (13), a rotating shaft (12) and a chuck nut (15), wherein the electric spindle (14) is fixed on the base (1) through the electric spindle clamp (13), the rotating shaft (12) is connected with the electric spindle (14) through the chuck nut (15), and the rotating shaft (12) is matched with the working surface of the tested air foil radial bearing (11);
a loading device; the loading device comprises a pulley frame (4), a pair of fixed pulleys (5), a rigid rope (3) and a heavy object (2), wherein the pulley frame (4) is fixed on the base (1), the fixed pulleys (5) are fixed on the pulley frame (4), the rigid rope (3) is wound on the pair of fixed pulleys (5), one end of the rigid rope is connected with the heavy object (2), and the other end of the rigid rope is connected with the bearing seat (8);
a measuring device; the measuring device comprises a pair of displacement sensors (6), a displacement sensor support (7), a pressure sensor (10), a pressure sensor support (18), a rotation speed sensor (16), a rotation speed sensor support (17) and a data acquisition device, wherein the displacement sensor support (7) is fixed on the base (1), the pair of displacement sensors (6) are fixed on the displacement sensor support (7) to form a measuring plane for measuring the displacement of the bearing seat (8), the pressure sensor support (18) is fixed on the base (1), the pressure sensor (10) is fixed on the pressure sensor support (18), the rotation speed sensor support (17) is fixed on the base (1), and the rotation speed sensor (16) is fixed on the rotation speed sensor support (17) to measure the rotation speed of the rotating shaft (12).
2. The air foil radial bearing performance integrated test stand of claim 1, wherein: the electric spindle (14) dissipates heat in an air cooling or water cooling mode.
3. The air foil radial bearing performance integrated test stand of claim 1, wherein: and the motorized spindle (14) is controlled through a frequency converter, and the automatic test of the service life of the bearing is realized by matching with a timing relay.
4. The air foil radial bearing performance integrated test stand of claim 1, wherein: the rigid rope (3) is connected with the bearing seat (8) through a lifting screw.
5. The air foil radial bearing performance integrated test stand of claim 1, wherein: the rotating shaft (12) or the collet nut (15) is stuck with a reflective strip, and the position of the rotating speed sensor (16) is aligned with the reflective strip.
6. The air foil radial bearing performance integrated test stand of claim 1, wherein: the data acquisition device consists of a multichannel data acquisition card and a computer and is used for acquiring and recording measurement signals of the displacement sensor (6), the pressure sensor (10) and the rotating speed sensor (16).
7. The air foil radial bearing performance integrated test stand of claim 1, wherein: the tested air foil radial bearing (11) is arranged in the bearing seat (8), one end of the moment rod (9) is fixed on the bearing seat (8) through threaded connection, and the other end of the moment rod is lapped on a force measuring point of the pressure sensor (10).
8. The air foil radial bearing performance integrated test stand of claim 1, wherein: the mounting positions of the pulley frame (4), the displacement sensor support (7) and the rotating speed sensor support (17) can be adjusted through a groove structure at the joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321681761.9U CN220552607U (en) | 2023-06-29 | 2023-06-29 | Comprehensive test bed for air foil radial bearing performance |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321681761.9U CN220552607U (en) | 2023-06-29 | 2023-06-29 | Comprehensive test bed for air foil radial bearing performance |
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| CN220552607U true CN220552607U (en) | 2024-03-01 |
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| CN202321681761.9U Active CN220552607U (en) | 2023-06-29 | 2023-06-29 | Comprehensive test bed for air foil radial bearing performance |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118392489A (en) * | 2024-05-17 | 2024-07-26 | 沈阳工程学院 | An experimental device for air dynamic bearings |
| CN118584133A (en) * | 2024-08-06 | 2024-09-03 | 浙江清华长三角研究院 | A rapid measurement device for take-off speed of radial air foil bearing |
-
2023
- 2023-06-29 CN CN202321681761.9U patent/CN220552607U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118392489A (en) * | 2024-05-17 | 2024-07-26 | 沈阳工程学院 | An experimental device for air dynamic bearings |
| CN118584133A (en) * | 2024-08-06 | 2024-09-03 | 浙江清华长三角研究院 | A rapid measurement device for take-off speed of radial air foil bearing |
| CN118584133B (en) * | 2024-08-06 | 2025-01-21 | 浙江清华长三角研究院 | A rapid measurement device for take-off speed of radial air foil bearing |
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