CN220819426U - Thrust air foil bearing test bed - Google Patents
Thrust air foil bearing test bed Download PDFInfo
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- CN220819426U CN220819426U CN202321821275.2U CN202321821275U CN220819426U CN 220819426 U CN220819426 U CN 220819426U CN 202321821275 U CN202321821275 U CN 202321821275U CN 220819426 U CN220819426 U CN 220819426U
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- 239000011888 foil Substances 0.000 title claims abstract description 43
- 238000012360 testing method Methods 0.000 title claims abstract description 39
- 238000006073 displacement reaction Methods 0.000 claims description 25
- 239000000523 sample Substances 0.000 claims description 5
- 230000003068 static effect Effects 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 238000005259 measurement Methods 0.000 abstract 2
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
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Abstract
The utility model relates to a thrust air foil bearing test bed which comprises a bottom plate, a loading device, a bearing device, a measuring device, a driving device and a data acquisition device. The utility model overcomes the defects existing in the prior art, and provides the air foil thrust bearing special for testing the static characteristic and the dynamic characteristic of the air foil thrust bearing, which meets the test requirements of take-off rotation speed, bearing capacity, air film thickness, bearing temperature and friction torque; the method can realize the measurement of loading force, take-off rotation speed, air film thickness, friction moment in the start-stop stage and the stable stage, and the measurement of bearing temperature change in the start-stop stage and the stable stage.
Description
Technical Field
The utility model relates to the field of air foil bearing tests, in particular to a thrust air foil bearing test bed.
Background
The air foil bearing is a foil bearing structure, which is formed by a plurality of metal foils in a bearing body, and is a dynamic pressure bearing using air as a lubricating medium, and is also called an air foil dynamic pressure thrust bearing. The air foil bearing is widely applied to the fields of turbine engines, air compressors and the like by the excellent characteristics of high speed, oil free, no pollution, low friction loss, wide working temperature range, simple structure and the like. Currently, with the gradual commercialization of micro gas turbines, air foil bearings will also be gradually popularized and applied to micro gas turbines.
After the design and sample preparation of the existing air foil bearing are completed, tests such as take-off rotation speed, bearing capacity, air film thickness, bearing temperature, friction moment and the like are required to be carried out on a simulation test bench, and structural parameters of the existing bearing are optimized according to the results of the simulation tests until design requirements are met. The prior art has little research on test devices of static characteristics and dynamic characteristics of the thrust air foil bearing, so the design and manufacture of a test bed of the thrust air foil bearing meeting the test requirements is very urgent.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provide a device which meets the test requirements of take-off speed, bearing capacity, air film thickness and friction torque and is specially used for testing the static characteristic and dynamic characteristic of a thrust air foil bearing; the loading force can be adjusted, the take-off rotating speed can be measured, the air film thickness can be measured, the bearing temperature can be measured, and the friction moment in the starting stage and the stable stage can be measured.
The technical scheme for realizing the aim of the utility model is as follows: a horizontal thrust air foil bearing test bed comprises a bottom plate, a loading device, a bearing device, a measuring device, a driving device and a data acquisition device.
The driving device arranged on the bottom plate can provide the power required by the rotation of the rotating shaft.
The function of loading the thrust air foil bearing is realized by changing the weight of the weights on the weight tray;
And the data acquisition card is used for transmitting the information of the sensor to the computer to acquire and store the related data.
Preferably, the loading device comprises a weight tray, a weight vertical rod, a lever base, a dowel bar and a thrust bar; the lever base is fixed on the bearing base; the lever is connected with the lever base; the vertical rod of the weight tray is connected with the lever; the weight tray is sleeved on the weight tray vertical rod; the dowel bar is fixed on the lever; the thrust rod is connected to the dowel bar;
Preferably, the loading device can adjust the applied load by changing the weight of the weight on the weight tray;
preferably, the bearing device comprises a small bottom plate, an end cover, a bearing base, a self-aligning roller bearing, a linear bearing, a thrust shaft, a thrust air foil bearing, a circumferential positioning rod and a circumferential positioning rod base; the small bottom plate is fixed on the bottom plate of the test bed; the bearing base is fixed on the small bottom plate; the aligning ball bearing is fixed on the bearing base through an inner hole of the bearing base and the end cover; the linear bearing is fixedly arranged in the inner holes of the aligning ball bearing and the bearing base through tight connection; the circumferential positioning rod base is fixed on the bottom plate;
Preferably, the circumferential positioning rod is fixed on the thrust shaft, and the other end of the circumferential positioning rod is lapped on the circumferential positioning rod base;
Preferably, the thrust shaft in the bearing device is arranged in the inner hole of the linear bearing, and is loosely matched in the inner hole of the linear bearing in order to realize axial movement, and the circumferential positioning rod and the moment rod are matched for use so as to prevent circumferential rotation;
Preferably, the driving device comprises a motor main shaft, a motor upper clamp, a motor lower clamp, a motor chuck and a rotating shaft; the motor lower clamp is fixed on the bottom plate of the test bed; the motor spindle is fixed on the motor lower clamp through the motor upper clamp; the rotating shaft is clamped on the motor main shaft through a motor chuck;
Preferably, the measuring device comprises a moment rod, a friction moment sensor base, a displacement sensor base, a rotating speed sensor base, a rotating speed sensor bracket and a temperature sensor; the displacement sensor base is fixed on the bottom plate; the friction torque sensor base is fixed on the test base plate; the rotating speed sensor base is fixed on the bottom plate; the rotating speed sensor bracket is fixed on the rotating speed sensor base; the rotating speed sensor is fixed on the rotating speed sensor bracket; the object concentration sensor is arranged in an inner hole of the thrust shaft, and a probe of the object concentration sensor is contacted with the thrust air foil bearing;
Preferably, the moment rod is fixed on the thrust shaft, and the other end of the moment rod is lapped on the friction moment sensor;
Preferably, the friction torque sensor is connected to the friction torque sensor base, and can be used with a torque rod to measure the magnitude of friction torque of the air foil bearing in the start-stop stage and the steady operation stage;
Preferably, the displacement sensor is arranged on a base of the displacement sensor, a scanning hole of the displacement sensor is aligned with the right end face of the thrust shaft, and the thickness of the air film can be measured by measuring the displacement of the thrust shaft along the axial direction.
Preferably, the rotation speed sensor is matched with a reflective strip attached to the motor clamp, the obtained pulse signal is transmitted to a computer, and the rotation speed of the rotor can be obtained through calculation.
After the technical scheme is adopted, the utility model has the following beneficial effects:
(1) The lever structure is adopted to load the test bed, so that the structure is simple, and data is easy to record; (2) The scheme of matching the self-aligning roller bearing with the linear bearing can realize the function of self-aligning the thrust shaft in unsteady state and the axial movement of the thrust shaft, so that the thickness of the air film can be accurately calculated; (3) The utility model is convenient for analyzing and storing the related data information in the testing process by data acquisition, so that the whole equipment is more digital, the tested data is more accurate, and the product is convenient for parameter analysis and optimization in the later period.
Drawings
In order that the utility model may be more readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings, in which
FIG. 1 is a schematic perspective view of the present utility model;
FIG. 2 is a schematic diagram of a loading device according to the present utility model;
FIG. 3 is a schematic view of a bearing assembly according to the present utility model;
FIG. 4 is a schematic view of an exploded construction of a bearing assembly according to the present utility model;
FIG. 5 is a schematic view of a friction torque sensor mounting structure of the present utility model;
FIG. 6 is a schematic diagram of a displacement sensor mounting structure according to the present utility model;
FIG. 7 is a schematic view of a rotational speed sensor mounting structure of the present utility model;
FIG. 8 is a schematic view of a temperature sensor mounting structure of the present utility model;
FIG. 9 is a schematic view of the mounting structure of the driving device of the present utility model;
FIG. 10 is a schematic diagram of a data acquisition system according to the present utility model;
Wherein, 1, the bottom plate; 2. a loading device; 3. a bearing device; 4. a measuring device; 5. a drive train device; 6. a data acquisition system; 2a, weight tray; 2b, a weight tray vertical rod; 2c, lever; 2d, a force transmission shaft; 2e, lever base; 2f, a thrust rod; 3a, end covers; 3b, a linear bearing; 3c, aligning the roller bearing; 3d, a bearing base; 3e, a thrust shaft; 3f, thrust air foil bearing; 3g, a circumferential positioning rod; 3h, a circumferential positioning rod base; 3i, a small bottom plate; 4a1, a torque rod; 4a2, a friction torque sensor; 4a3, a friction torque sensor base; 4b1, a displacement sensor; 4b2, a displacement sensor base; 4c1, a rotating speed sensor base; 4c2, a rotation speed sensor, 4c3 and a rotation speed sensor bracket; 4d, a temperature sensor; 5a, a rotating shaft; 5b, a motor chuck; 5c, a motor spindle; 5d, mounting a clamp on the motor; 5e, a motor is arranged on the lower clamp; 6a, a computer; 6b, a data acquisition card;
Detailed Description
It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other. In the description of the present utility model, it should be understood that the terms "vertical," "horizontal," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. Unless specifically stated or limited otherwise, the terms "mounted," "connected," and "fixed" are to be construed broadly, and may be, for example, mechanically connected, fixedly connected, or integrally connected; the connection can be detachable or electric; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. Unless explicitly specified and limited otherwise, a plurality of references herein may be understood as two or more. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in a specific case.
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, 2, 3, 5, 6, 7 and 8, the utility model provides a test stand of a thrust air foil bearing, which comprises a bottom plate 1, a loading device 2, a bearing device 3, a measuring device 4, a driving device 5 and a data acquisition device 6; the loading device 2 is arranged on a bearing base 3d, the bearing device 3 is arranged on the bottom plate 1, the measuring device 4 is arranged on the bottom plate 1, and the driving device 5 is fixed on the bottom plate 1.
The test bed comprises a small bottom plate, a small bottom plate and a test bed base plate, wherein the small bottom plate is fixed on the test bed base plate; the bearing base is fixed on the small bottom plate; the aligning ball bearing is fixed on the bearing base through an inner hole of the bearing base and the end cover; the linear bearing is fixedly arranged in the inner holes of the aligning ball bearing and the bearing base through tight connection; the thrust shaft is connected and arranged in the inner hole of the linear bearing through a gap; the air foil bearing is fixed on the right end face of the thrust shaft; the circumferential positioning rod base is fixed on the bottom plate of the test bed; one end of the circumferential positioning rod is fixed on the thrust shaft, and the other end of the circumferential positioning rod is lapped on the circumferential positioning rod base.
The displacement sensor base is fixed on a test base plate between the electric spindle and the foil thrust bearing; the displacement sensor is fixed on the displacement sensor base, and the displacement scanning hole is aligned with the right end face of the thrust shaft; the friction torque sensor base is fixed on the test base plate; the friction torque sensor is fixed on the friction torque sensor base; the moment rod is fixed on the thrust shaft, and the other end of the moment rod is lapped on the friction moment sensor; the rotating speed sensor base is fixed on the bottom plate; the rotating speed sensor bracket is fixed on the rotating speed sensor base; the rotating speed sensor is fixed on the rotating speed sensor bracket, and the scanning hole is aligned with the reflecting strip of the motor chuck; the temperature sensor is arranged on the thrust shaft, and the probe of the temperature sensor is contacted with the thrust air foil bearing
In addition, more explanation is that: as shown in fig. 2, the loading device 2 in this embodiment includes a weight tray 2a, a weight tray vertical rod 2b, a lever 2c, a force transmission rod 2d, a lever base 2e, and a thrust rod 2f, wherein the lever base 2e is fixed on a bearing base 3 d; the lever 2c is connected with the lever base 2 e; the weight tray vertical rod 2b is connected with the lever 2 c; the weight tray 2a is sleeved on the weight tray vertical rod 2 b; the dowel bar 2d is fixed on the lever 2 c; the thrust rod 2f is connected to the dowel bar 2 d; the loading device realizes the loading function by changing the weight of the weights on the weight tray 2 a.
In addition, more explanation is that: as shown in fig. 3 and 4, the bearing device 3 in this embodiment includes an end cover 3a, a linear bearing 3b, a self-aligning roller bearing 3c, a bearing base 3d, a thrust shaft 3e, a thrust air foil bearing 3f, a circumferential positioning rod 3g, a circumferential positioning rod base 3h, and a small bottom plate 3i. The aligning ball bearing 3c is fixed on the bearing base 3d through an inner hole of the bearing base 3d and the end cover 3 a; the linear bearing 3b is fixedly arranged in the inner holes of the self-aligning roller bearing 3c and the bearing base 3d through tight connection; the circumferential positioning rod base 3h is fixed on the bottom plate 1; one end of the circumferential positioning rod 3g is fixed on the thrust shaft 3f, and the other end is lapped on the circumferential positioning rod base 3 h; the thrust shaft 3e in the bearing device 3 is arranged in the inner hole of the linear bearing 3b, and is loosely matched with the inner hole of the linear bearing 3b in order to realize axial movement, and the circumferential positioning rod 3g and the moment rod 4a1 are matched for preventing circumferential rotation;
In addition, more explanation is that: as shown in fig. 5, 6, and 7, the measuring device 4 in the present embodiment includes a torque rod 4a1, a friction torque sensor 4a2, a friction torque sensor mount 4a3, a displacement sensor 4b1, a displacement sensor mount 4b2, a rotation speed sensor mount 4c1, a rotation speed sensor 4c2, and a rotation speed sensor mount 4c3. The displacement sensor base 4b2 is fixed on the bottom plate 1; the friction torque sensor base 4a4 is fixed on the test base plate 1; the rotating speed sensor base 4c2 is fixed on the bottom plate 1; one end of the moment rod 4a1 is fixed on the thrust shaft 3e, and the other end is lapped on the friction moment sensor 4a 2; the friction torque sensor 4a2 is fixed on the friction torque sensor base 4a3, and the magnitude of friction torque of the air foil bearing 3f in the start-stop stage and the steady operation stage can be measured by matching with the torque rod 4a 1; the displacement sensor 4b1 is arranged on the displacement sensor base 4b2, a scanning hole of the displacement sensor 4b1 is aligned with the right end face of the thrust shaft 3e, and the thickness of the air film can be measured by measuring the displacement of the thrust shaft 3e along the axial direction; the rotating speed sensor bracket 4c3 is fixed on the rotating speed sensor base 4c 1; the rotation speed sensor 4c2 is fixed on the rotation speed sensor bracket 4c 3; the rotation speed sensor 4c2 is matched with a reflective strip attached to the motor chuck 5b for use, the obtained pulse signal is transmitted to the computer 6a, and the rotation speed of the motor chuck 5b can be obtained through calculation; the temperature sensor 4d is arranged in an inner hole of the thrust shaft 3e, and a probe of the temperature sensor is contacted with the thrust air foil bearing 3f, so that the temperature change condition of the air foil bearing in the start-stop stage and the stable operation stage can be measured;
In addition, more explanation is that: the driving device 5 in the present embodiment, as shown in fig. 8, the driving device 5 includes a rotating shaft 5a, a motor chuck 5b, a motor spindle 5c, a motor upper clamp 5d, and a motor lower clamp 5e, wherein the motor lower clamp 5e is fixed on the test bed base plate 1; the motor main shaft 5c is fixed on the motor lower clamp through the motor upper clamp 5 d; the rotating shaft 5a is clamped on the motor main shaft 5c through a motor chuck 5 b;
In addition, more explanation is that: the data acquisition system 6 in this embodiment, as shown in fig. 9, includes a computer 6a and a data acquisition card 6b.
The working principle of the utility model is as follows: firstly, loading is carried out on a weight disc 2a of a loading device 2, then a driving device 5 is started to provide power for rotation of a rotating shaft 5a, a measuring system 4 is opened to measure various physical parameters, and a computer 6a and a data acquisition card 6b are used for processing and storing, so that the conditions of rotating speeds of the rotating shaft 5a, air film thicknesses of the thrust air foil bearing 3f, bearing capacities of the thrust air foil bearing 3f, friction moments of the thrust air foil bearing 3f in a start-stop stage and a stable operation stage and temperature changes of the thrust air foil bearing 3f in the start-stop stage and the stable operation stage can be obtained.
While the foregoing is directed to embodiments of the present utility model, other and further details of the utility model may be had by the present utility model, it should be understood that the foregoing description is merely illustrative of the present utility model and that no limitations are intended to the scope of the utility model, except insofar as modifications, equivalents, improvements or modifications are within the spirit and principles of the utility model.
Claims (4)
1. A thrust air foil bearing test stand, characterized in that the test stand comprises the following means: the test bottom plate is sequentially provided with a loading device, a measuring device, a bearing device, a driving device and a data acquisition device from left to right;
Loading device: the loading device comprises a weight tray, a weight vertical rod, a lever base, a dowel bar and a thrust bar;
Bearing device: the bearing device comprises a small bottom plate, an end cover, a bearing base, a self-aligning roller bearing, a linear bearing, a thrust shaft, a thrust air foil bearing, a circumferential positioning rod and a circumferential positioning rod base;
Measuring device: the measuring device comprises a moment rod, a friction moment sensor base, a displacement sensor base, a rotating speed sensor base, a rotating speed sensor bracket and a temperature sensor;
A driving device: the driving device comprises a motor, a motor upper clamp, a motor lower clamp, a motor chuck and a rotating shaft;
and a data acquisition system: the data acquisition system comprises a computer and a data acquisition card;
The weight tray vertical rod is further included, and the lever base is fixed on the bearing base; the lever is connected with the lever base; the vertical rod of the weight tray is connected with the lever; the weight tray is sleeved on the weight tray vertical rod; the dowel bar is fixed on the lever; the thrust rod is connected to the dowel bar.
2. The thrust air foil bearing stand of claim 1, further comprising a self-aligning ball bearing, the small base plate being secured to the stand base plate; the bearing base is fixed on the small bottom plate; the aligning ball bearing is fixed on the bearing base through an inner hole of the bearing base and the end cover; the linear bearing is fixedly arranged in the inner holes of the aligning ball bearing and the bearing base through tight connection; the thrust shaft is connected and arranged in the inner hole of the linear bearing through a gap; the air foil bearing is fixed on the right end face of the thrust shaft; the circumferential positioning rod base is fixed on the bottom plate of the test bed; one end of the circumferential positioning rod is fixed on the thrust shaft, and the other end of the circumferential positioning rod is lapped on the circumferential positioning rod base.
3. The thrust air foil bearing test stand of claim 1, wherein the displacement sensor mount is secured to a test floor between the motorized spindle and the foil thrust bearing; the displacement sensor is fixed on the displacement sensor base, and the displacement scanning hole is aligned with the right end face of the thrust shaft; the friction torque sensor base is fixed on the test base plate; the friction torque sensor is fixed on the friction torque sensor base; the moment rod is fixed on the thrust shaft, and the other end of the moment rod is lapped on the friction moment sensor; the rotating speed sensor base is fixed on the bottom plate; the rotating speed sensor bracket is fixed on the rotating speed sensor base; the rotating speed sensor is fixed on the rotating speed sensor bracket, and the scanning hole is aligned with the reflecting strip of the motor chuck; the temperature sensor is placed on the thrust shaft and the probe of the temperature sensor is contacted with the thrust air foil bearing.
4. The thrust air foil bearing test stand of claim 1, wherein the lower motor clamp is secured to a test stand base plate; the motor main shaft is fixed on the motor lower clamp through the motor upper clamp; the rotating shaft is clamped on the motor spindle through the motor chuck.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321821275.2U CN220819426U (en) | 2023-07-12 | 2023-07-12 | Thrust air foil bearing test bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321821275.2U CN220819426U (en) | 2023-07-12 | 2023-07-12 | Thrust air foil bearing test bed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220819426U true CN220819426U (en) | 2024-04-19 |
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ID=90699117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321821275.2U Active CN220819426U (en) | 2023-07-12 | 2023-07-12 | Thrust air foil bearing test bed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220819426U (en) |
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2023
- 2023-07-12 CN CN202321821275.2U patent/CN220819426U/en active Active
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