CN114061950A - Upright fluid bearing tilting pad sliding bearing test bed - Google Patents
Upright fluid bearing tilting pad sliding bearing test bed Download PDFInfo
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- CN114061950A CN114061950A CN202111332889.XA CN202111332889A CN114061950A CN 114061950 A CN114061950 A CN 114061950A CN 202111332889 A CN202111332889 A CN 202111332889A CN 114061950 A CN114061950 A CN 114061950A
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- sliding bearing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/04—Bearings
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
- G01B7/06—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/02—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0009—Force sensors associated with a bearing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/04—Bearings
- G01M13/045—Acoustic or vibration analysis
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Abstract
The invention discloses a positive fluid bearing tilting pad sliding bearing test bed, which comprises: a main shaft; the power input system is coupled with the main shaft and used for providing rotating power for the main shaft; the loading system is arranged in the middle of the main shaft and is used for providing loading for the main shaft; the left half bearing system comprises a first loading seat and a first flexible loading device, wherein the first loading seat is used for mounting a first tilting pad sliding bearing to be tested, the first tilting pad sliding bearing to be tested is sleeved on the left part of the main shaft, and the first flexible loading device acts on the first loading seat; the right half bearing system comprises a second loading seat and a second flexible loading device, wherein the second loading seat and the second flexible loading device are used for installing a second tilting pad sliding bearing to be tested, the second tilting pad sliding bearing to be tested is sleeved on the right part of the main shaft, and the second flexible loading device acts on the second loading seat. The method is used for solving the problem that the prior art can not well simulate the vibration test of the actual engineering environment.
Description
Technical Field
The application relates to the technical field of bearing loading tests, in particular to a positive fluid bearing tilting pad sliding bearing test bed.
Background
In many large-scale rotating machinery equipment, such as water turbines, steam turbines, nuclear power plants, etc., common sliding bearings have been unable to meet the requirements of high bearing capacity and low power consumption, while tilting pad sliding bearings have a multi-pad structure and are capable of self-aligning, thus having higher bearing capacity and more stable performance compared with the conventional bearings. Most of the prior test beds are inverted test beds and are mainly used for testing basic performance parameters of the test bearings, such as temperature rise, eccentricity, rigidity, damping coefficient and the like, and the structure can not well simulate the vibration test of the actual engineering environment.
Disclosure of Invention
In view of this, the embodiment of the present application provides an upright fluid bearing tilting pad sliding bearing test bed, which is used for solving the problem that the prior art cannot well simulate the vibration test of the actual engineering environment.
According to an embodiment of the application, there is provided an upright fluid bearing tilting pad sliding bearing test bed, including:
a main shaft;
the power input system is coupled with the main shaft and used for providing rotating power for the main shaft;
the loading system is arranged in the middle of the main shaft and is used for providing loading for the main shaft;
the left half bearing system comprises a first loading seat and a first flexible loading device, wherein the first loading seat is used for mounting a first tilting pad sliding bearing to be tested, the first tilting pad sliding bearing to be tested is sleeved on the left part of the main shaft, and the first flexible loading device acts on the first loading seat;
the right half bearing system comprises a second loading seat and a second flexible loading device, wherein the second loading seat and the second flexible loading device are used for installing a second tilting pad sliding bearing to be tested, the second tilting pad sliding bearing to be tested is sleeved on the right part of the main shaft, and the second flexible loading device acts on the second loading seat.
Further, the power input system comprises a motor and a transmission mechanism, and the power of the motor is transmitted to the main shaft through the transmission mechanism.
Furthermore, the transmission mechanism comprises a first coupler, a belt transmission mechanism and a second coupler, the output end of the motor is connected with the input end of the belt transmission mechanism through the first coupler, and the output end of the belt transmission mechanism is connected with the main shaft through the second coupler.
The torque measuring device and the third coupler are sequentially connected between the second coupler and the main shaft.
Further, the loading system comprises:
the bearing is arranged in the middle of the main shaft;
one end of the connecting piece is abutted with the outer end of the deep groove ball bearing;
one end of the force sensor is connected with the other end of the connecting piece; and
and the driving end of the loader acts on the other end of the force sensor.
Further, the bearing is a deep groove ball bearing, the loader adopts a jack, and the first flexible loading device adopts a spring or a steel wire rope.
Further, the device also comprises a loading bearing seat, wherein the loading bearing seat is sleeved on the bearing.
Further, the left half bearing system further comprises a bearing box body and an upper box body cover plate, the first loading seat is arranged in the bearing box body, the upper box body cover plate is detachably fixed on the bearing box body, and the first flexible loading device is respectively connected between the first loading seat and the bearing box body and between the first loading seat and the upper box body cover plate.
Further, still include the collection system, the collection system includes:
the temperature sensor is used for acquiring the temperatures of the first tilting pad sliding bearing and the second tilting pad sliding bearing to be detected;
the pressure sensor is used for acquiring the pressure of the first tilting pad sliding bearing and the second tilting pad sliding bearing to be detected;
the eddy current displacement sensor is used for acquiring the oil film thickness of the first tilting pad sliding bearing and the second tilting pad sliding bearing to be detected;
and the acceleration sensor is used for acquiring the vibration characteristics of the first tilting pad sliding bearing and the second tilting pad sliding bearing to be detected.
Further, still include the oil piping system, the oil piping system includes:
an oil pump; and
and one end of the oil inlet and outlet pipeline is communicated with an oil outlet of the oil pump, and the other end of the oil inlet and outlet pipeline is communicated with oil inlets of the first tilting pad sliding bearing and the second tilting pad sliding bearing to be tested.
The technical scheme provided by the embodiment of the application can have the following beneficial effects:
according to the embodiment, by designing the positive fluid tilting pad sliding bearing test bed, compared with an inverted test bed, the actual use condition of the bearing in the working process can be simulated, so that the dynamic and static characteristics of the bearing are tested to be more in line with the actual condition, the problem that the prior art cannot well simulate the vibration test of the actual engineering environment is solved, and the dynamic characteristics and the vibration reduction characteristics of the rotor can be further studied in depth.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.
FIG. 1 is a schematic perspective view of an upright fluid bearing tilting pad sliding bearing test bed according to an exemplary embodiment.
FIG. 2 is a side schematic view of an upright fluid bearing tiltable pad sliding bearing test bed according to an exemplary embodiment.
FIG. 3 is a perspective view of a drive mechanism configuration according to an exemplary embodiment.
FIG. 4 is a perspective view of a left bearing system configuration shown in accordance with an exemplary embodiment.
FIG. 5 is a schematic cross-sectional view of a spindle shown in accordance with an exemplary embodiment.
Fig. 6 is a perspective view of a hand jack according to an exemplary embodiment.
Fig. 7 is a schematic perspective view of a tilting pad sliding bearing according to an exemplary embodiment.
FIG. 8 is a diagram illustrating a bearing shell temperature and pressure sensor arrangement according to an exemplary embodiment.
Figure 9 is a diagram illustrating an eddy current displacement sensor arrangement according to an exemplary embodiment.
Fig. 10 is a diagram illustrating an acceleration sensor arrangement according to an exemplary embodiment.
The reference numerals in the figures are:
10. a main shaft;
20. a power input system; 21. a motor; 22. a first coupling; 23. a belt drive mechanism; 24. a second coupling; 25. a torque measuring device; 26. a third coupling;
30. loading the system; 31. a bearing; 32. a connecting member; 33. a force sensor; 34. a loader; 35. a connecting bolt; 36. loading a bearing seat;
40. a left half bearing system; 41. a first loading base; 42. a first flexible loading device; 43. a bearing housing; 44. an upper case cover plate; 45. a lifting eye screw;
50. a right half bearing system; 51. a second loading base; 52. a second flexible loading device;
60. a first tilting pad sliding bearing to be measured; 61. an oil inlet hole; 62. an oil sump;
70. a second tilting pad sliding bearing to be tested;
81. a temperature sensor; 82. a pressure sensor; 83. an eddy current displacement sensor; 84. an acceleration sensor;
90. an oil circuit system; 91. an oil pump; 92. an oil inlet and outlet pipeline.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present application. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.
As shown in fig. 1-2, an embodiment of the present invention provides a testing stand for an upright fluid bearing tilting pad sliding bearing 31, comprising: the power input system 20 is coupled with the main shaft 10 and used for providing rotating power for the main shaft 10; the loading system 30 is installed in the middle of the main shaft 10 and is used for providing loading for the main shaft 10; the left half bearing system 40 comprises a first loading seat 41 for mounting a first tilting pad sliding bearing 60 to be tested, a first flexible loading device 42, wherein the first tilting pad sliding bearing 60 to be tested is sleeved on the left part of the main shaft 10, and the first flexible loading device 42 acts on the first loading seat 41; the right half bearing system 50 comprises a second loading seat 51 for installing a second tilting pad sliding bearing 70 to be tested, and a second flexible loading device 52, wherein the second tilting pad sliding bearing 70 to be tested is sleeved on the right part of the main shaft 10, and the second flexible loading device 52 acts on the second loading seat 51.
According to the embodiment, by designing the positive fluid tilting pad sliding bearing test bed, compared with an inverted test bed, the actual use condition of the bearing in the working process can be simulated, so that the dynamic and static characteristics of the bearing are tested to be more in line with the actual condition, the problem that the prior art cannot well simulate the vibration test of the actual engineering environment is solved, and the dynamic characteristics and the vibration reduction characteristics of the rotor can be further studied in depth.
It should be noted that the tilting pad sliding bearing to be measured according to the embodiment of the present invention is installed at the left and right ends of the main shaft 10 to perform a supporting function, so that the tilting pad sliding bearing to be measured is called a forward-mounted structure, and the reverse-mounted structure is just opposite to the forward-mounted structure (the tilting pad sliding bearing to be measured is installed in the middle of the main shaft 10 to perform no supporting function, and the left and right ends of the main shaft 10 are supported by other bearings). Compared with an inverted structure, the upright structure provided by the embodiment of the invention can better simulate the actual situation in the working process, so that the dynamic and static characteristics of the bearing are more consistent with the actual situation in the test, and the dynamic characteristics and the vibration damping characteristics of the rotor can be further studied in depth.
In one embodiment, referring to fig. 3, the power input system 20 includes a motor 21 and a transmission mechanism, and the power of the motor 21 is transmitted to the spindle 10 through the transmission mechanism. The transmission mechanism here can take many forms, such as a belt transmission form, a gear transmission form or a chain transmission form, and the present embodiment preferably takes a belt transmission form.
Further, the transmission mechanism comprises a first coupler 22, a belt transmission mechanism 23 and a second coupler 24, the output end of the motor 21 is connected with the input end of the belt transmission mechanism 23 through the first coupler 22, and the output end of the belt transmission mechanism 23 is connected with the spindle 10 through the second coupler 24. The first coupling 22 and the second coupling 24 may be both a quincunx coupling. The transmission mechanism can transmit power from the motor 21 to the main shaft 10, and the transition effect is achieved. The transmission mechanism transmits through a belt transmission mechanism 23, on one hand, the servo motor 21 can be prevented from being directly connected with the main shaft 10 to cause the main shaft 10 to be subjected to an additional bending moment, and the servo motor can be used as an unloading device; on the other hand, the driving belt wheel is a large belt wheel, and the driven belt wheel is a small belt wheel, so that the speed increasing effect can be achieved; simultaneously, adopt band pulley belt structure, can also have certain buffering and inhale the effect of shaking and overall structure overall arrangement is more reasonable.
Further, the device comprises a torque measuring device 25 and a third coupling 26, wherein the torque measuring device 25 and the third coupling 26 are sequentially connected between the second coupling 24 and the main shaft 10. The torque measuring device 25 can be used for measuring the torque output from the motor 21 to the main shaft 10. The third coupler 26 preferably adopts a diaphragm coupler, the diaphragm coupler has strong misalignment compensation capability and is convenient to disassemble and assemble, and the diaphragm coupler and a transmission system are not required to be disassembled due to certain adjustability in the axial direction in the process of replacing the tilting pad sliding bearing to be tested and the main shaft 10.
In one embodiment, as shown in fig. 5 and 6, the loading system 30 includes: the device comprises a bearing 31, a connecting piece 32, a force sensor 33 and a loader 34, wherein the bearing 31 is arranged in the middle of the main shaft 10; one end of the connecting piece 32 is abutted with the outer end of the deep groove ball bearing 31; one end of the force sensor 33 is connected with the other end of the connecting piece 32; the drive end of the loader 34 acts on the other end of the force sensor 33. The bearing 31 can also be mounted in the middle of the main shaft 10 by a loading bearing seat 36, the magnitude of the applied load is realized by controlling the loader 34, and the reading is read by the force sensor 33.
Further, the bearing 31 is a deep groove ball bearing, so that a large radial load can be borne, one end of a bearing 31 seat is positioned through a shaft shoulder, and the other end of the bearing 31 seat is positioned through an elastic retaining ring for a shaft, so that axial movement is prevented.
Further, the loader 34 is a jack, preferably a hand jack, the force sensor 33 is preferably an S-shaped force sensor, and the force sensor 33 controls the applied load after the rocker is manually rotated.
Furthermore, the hand-operated jack is mainly of a rhombic structure, two diagonal lines of the structure are perpendicular to each other, so that the rocker rotates to drive the ejector rod and the connecting piece 32 to move towards the vertical direction, and the connecting piece 32 is connected with the loading bearing seat 36 through the connecting bolt 35, so that the load condition of the actual working condition can be simulated.
In an embodiment, as shown in fig. 4, the first flexible loading device 42 and the second flexible loading device 52 both use a spring or a steel cable, and the first flexible loading device 42 and the second flexible loading device 52 are used for implementing flexible loading, and it is easily understood that the spring implements flexible loading, and the steel cable implements flexible loading by elastic deformation of the steel cable.
In an embodiment, the first loading seat 41 and the second loading seat 51 may have the same structure, and the split sliding bearing 31 is used as a loading seat, which may be formed by combining an upper bearing loading seat and a lower bearing loading seat, so as to facilitate installation of the tilting pad sliding bearing to be tested.
In an embodiment, the left half bearing system 40 further includes a bearing housing 43 and an upper housing cover 44, the first loading seat 41 is disposed in the bearing housing 43, the upper housing cover 44 is detachably fixed on the bearing housing 43, and the first flexible loading device 42 is respectively connected between the first loading seat 41 and the bearing housing 43 and between the first loading seat 41 and the upper housing cover 44.
In order to facilitate observation of the condition of the main shaft 10 and convenient installation of various parts in the test process, the upper box cover plate 44 is of a cover-free structure, but in order to prevent impurities in the air from entering lubricating oil of the box body, the upper end of the upper box cover plate 44 can be connected with the upper box cover plate 44 through a transparent acrylic plate by using bolts, so that the disassembly is convenient.
In order to realize flexible loading, lifting ring screws 45 are respectively arranged on two side surfaces of the upper bearing loading seat and the lower bearing loading seat, lifting ring screws 45 are also arranged at corresponding positions of the inner walls of the bearing box body 43 and the upper box body cover plate 44, the lifting ring screws 45 on the inner walls of the upper bearing loading seat and the bearing box body 43 are connected through springs, and the lifting ring screws 45 on the lower bearing loading seat and the lower bearing loading seat are connected through springs.
The right half bearing system 50 has the same structure as the left half bearing system 40, and the details are not repeated here.
In an embodiment, further comprising an acquisition system, the acquisition system comprising: the temperature sensor 81 is used for acquiring the temperatures of the first tilting pad sliding bearing and the second tilting pad sliding bearing to be detected; the pressure sensor 82 is used for acquiring the pressure of the first tilting pad sliding bearing and the second tilting pad sliding bearing to be detected; the eddy current displacement sensor 83 is used for acquiring the oil film thickness of the first tilting pad sliding bearing and the second tilting pad sliding bearing to be detected; the acceleration sensor 84 is used for acquiring the vibration characteristics of the first tilting pad sliding bearing and the second tilting pad sliding bearing to be detected.
As shown in fig. 8, the temperature sensor 81 is of a thermocouple type, and is embedded in the first and second loading seats together with the pressure sensor 82, so as to measure the temperature and pressure values of the tilting pad sliding bearing to be measured. In order to facilitate the installation of the temperature sensor 81 and the pressure sensor 82, a temperature measuring hole and a pressure measuring hole are formed in each bearing bush along the circumferential direction, three small holes can be respectively formed in two end faces of each bearing bush, one end of each bearing bush is used for measuring temperature, and the other end of each bearing bush is used for measuring pressure.
As shown in fig. 9, the eddy current displacement sensor 83 needs to measure the oil film thickness in the horizontal and vertical directions, respectively, and it is inconvenient to directly measure the oil film thickness, so that the displacements of the spindle 10 and the bearing 31 in the horizontal and vertical directions are measured, and the difference between them is the actual value of the oil film in the horizontal and vertical directions, respectively, and the actual thickness of the oil film can be obtained according to the geometric relationship.
As shown in fig. 10, the acceleration sensor 84 is mainly used for acquiring vibration signals (including vibration of a bearing bush and an oil film) of the first tilting pad sliding bearing and the second tilting pad sliding bearing to be tested, and for convenience of testing, the acceleration sensor 84 is installed at two sides of the first loading seat and the second loading seat and at two sides of the bearing box 43 and is used for testing the vibration signals of the tilting pad sliding bearing 31.
The temperature, the pressure and the film thickness of the bearing bush and the vibration signals of the first tilting pad sliding bearing and the second tilting pad sliding bearing to be tested are collected through the sensors, three temperature test points and three pressure test points can be taken for each bearing bush, four eddy current sensors can be used for testing the thickness of an oil film, the vibration signals can be obtained through four acceleration sensors 84, and then 26 test interfaces are required in total, so that an NI PCI-6259 type collection card can be selected, and 32 paths of 16-bit high-speed data can be collected.
In an embodiment, further comprising an oil system 90, said oil system 90 comprising: the device comprises an oil pump 91 and an oil inlet and outlet pipeline 92, wherein one end of the oil inlet and outlet pipeline 92 is communicated with an oil outlet of the oil pump 91, and the other end of the oil inlet and outlet pipeline 92 is communicated with oil inlet holes 61 of first and second tilting pad sliding bearings to be tested. The lubricating oil generates pressure difference under the action of the oil pump 91, enters the oil inlet of the tilting pad sliding bearing to be tested from the oil pump 91, and lubricates the bearing 31 along the oil hole.
As shown in fig. 7, the side wall of the tilting pad sliding bearing to be tested is provided with a plurality of oil inlet holes 61, the outer ring is provided with an oil groove 62, the oil holes are distributed at the joint of the tiles inside the bearing 31, the lubricating oil is introduced into the oil groove 62 of the outer ring of the tilting pad sliding bearing to be tested through an oil inlet and outlet pipeline 92 by an oil pump 91 via the oil holes on the loading seat, and the lubricating oil in the oil groove 62 can enter the gap between the bearing bush and the main shaft 10 through the oil inlet, and forms hydrodynamic lubrication.
The upright fluid bearing tilting pad sliding bearing test bed is also called as a rotor dynamic platform, and the working process is as follows:
the motor 21 is started, power is transmitted to the spindle 10 through the transmission mechanism, the oil pump 91 is started to control the flow and oil pressure of lubricating oil, the motor 21 reaches a stable working state after a period of time, at the moment, the first tilting pad sliding bearing and the second tilting pad sliding bearing to be tested form stable oil films, namely, a hydrodynamic lubrication state is achieved, an inner dynamic pressure oil film and an outer static pressure oil film are formed, the inner oil film mainly performs a lubrication effect, and the outer oil film has a certain bearing capacity. At the moment, the rocker of the hand-operated jack is rotated to open the jack to apply load, the load is stopped after the reading of the force sensor 33 reaches the specified size, at the moment, the voltage values of the pressure sensor 82, the temperature sensor 81 and the eddy current displacement sensor 83 are read through the data acquisition card, and the corresponding physical quantity actual value can be obtained after conversion. The method is characterized in that different eccentricities, load sizes and rotating speeds of a first tilting pad sliding bearing and a second tilting pad sliding bearing to be tested are taken as factors, each group of factors is taken as four levels, three-factor four-level orthogonal tests are carried out respectively, and a better test combination can be obtained, so that the fluid tilting pad sliding bearing can achieve better performance under the eccentricities, the load sizes and the rotating speeds, and the fluid tilting pad sliding bearing is used under the working condition as much as possible in the actual working process.
Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.
It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.
Claims (10)
1. An upright fluid bearing tilting pad plain bearing test bed comprising:
a main shaft;
the power input system is coupled with the main shaft and used for providing rotating power for the main shaft;
the loading system is arranged in the middle of the main shaft and is used for providing loading for the main shaft;
the left half bearing system comprises a first loading seat and a first flexible loading device, wherein the first loading seat is used for mounting a first tilting pad sliding bearing to be tested, the first tilting pad sliding bearing to be tested is sleeved on the left part of the main shaft, and the first flexible loading device acts on the first loading seat;
the right half bearing system comprises a second loading seat and a second flexible loading device, wherein the second loading seat and the second flexible loading device are used for installing a second tilting pad sliding bearing to be tested, the second tilting pad sliding bearing to be tested is sleeved on the right part of the main shaft, and the second flexible loading device acts on the second loading seat.
2. The upright fluid bearing tiltable pad sliding bearing test bed according to claim 1, wherein said power input system comprises a motor and a transmission mechanism, and the power of said motor is transmitted to said main shaft through said transmission mechanism.
3. The upright fluid bearing tiltable pad sliding bearing test bed according to claim 2, wherein said transmission comprises a first coupling, a belt transmission and a second coupling, wherein said output of said motor is connected to said input of said belt transmission through said first coupling, and said output of said belt transmission is connected to said spindle through said second coupling.
4. The upright fluid bearing tiltable pad sliding bearing test bed according to claim 3, further comprising a torque measuring device and a third coupling, said torque measuring device and third coupling being connected in sequence between said second coupling and said main shaft.
5. The upright fluid bearing tiltable pad sliding bearing test stand of claim 1, wherein said loading system comprises:
the bearing is arranged in the middle of the main shaft;
one end of the connecting piece is abutted with the outer end of the bearing;
one end of the force sensor is connected with the other end of the connecting piece; and
and the driving end of the loader acts on the other end of the force sensor.
6. The upright fluid bearing tiltable tile sliding bearing test bed according to claim 1, wherein said bearing is a deep groove ball bearing, said loader is a jack, and said first flexible loading device is a spring or a wire rope.
7. The upright fluid bearing tiltable pad sliding bearing test stand of claim 1 further comprising a load bearing block, said load bearing block being sleeved over said bearing.
8. The upright fluid bearing tiltable pad sliding bearing test bed according to claim 1, wherein said left half bearing system further comprises a bearing housing and an upper housing cover, said first loading seat is disposed in said bearing housing, said upper housing cover is detachably fixed on said bearing housing, said first flexible loading device is respectively connected between said first loading seat and said bearing housing and between said first loading seat and said upper housing cover.
9. The upright fluid bearing tiltable pad sliding bearing test stand of claim 1, further comprising an acquisition system comprising:
the temperature sensor is used for acquiring the temperatures of the first tilting pad sliding bearing and the second tilting pad sliding bearing to be detected;
the pressure sensor is used for acquiring the pressure of the first tilting pad sliding bearing and the second tilting pad sliding bearing to be detected;
the eddy current displacement sensor is used for acquiring the oil film thickness of the first tilting pad sliding bearing and the second tilting pad sliding bearing to be detected;
and the acceleration sensor is used for acquiring the vibration characteristics of the first tilting pad sliding bearing and the second tilting pad sliding bearing to be detected.
10. The positive fluid bearing tiltable pad sliding bearing test stand of claim 1, further comprising an oil system comprising:
an oil pump; and
and one end of the oil inlet and outlet pipeline is communicated with an oil outlet of the oil pump, and the other end of the oil inlet and outlet pipeline is communicated with oil inlets of the first tilting pad sliding bearing and the second tilting pad sliding bearing to be tested.
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| CN117168809A (en) * | 2023-08-04 | 2023-12-05 | 上海大学 | Gas turbine tilting pad sliding bearing data wireless acquisition system |
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