CN114001960B - Inverted tilting pad sliding bearing test bed - Google Patents
Inverted tilting pad sliding bearing test bed Download PDFInfo
- Publication number
- CN114001960B CN114001960B CN202111269413.6A CN202111269413A CN114001960B CN 114001960 B CN114001960 B CN 114001960B CN 202111269413 A CN202111269413 A CN 202111269413A CN 114001960 B CN114001960 B CN 114001960B
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- 238000012360 testing method Methods 0.000 title claims abstract description 34
- 230000007246 mechanism Effects 0.000 claims description 28
- 230000005540 biological transmission Effects 0.000 claims description 21
- 230000008878 coupling Effects 0.000 claims description 18
- 238000010168 coupling process Methods 0.000 claims description 18
- 238000005859 coupling reaction Methods 0.000 claims description 18
- 230000009471 action Effects 0.000 claims description 3
- 230000003068 static effect Effects 0.000 abstract description 8
- 239000003921 oil Substances 0.000 description 57
- 239000010687 lubricating oil Substances 0.000 description 12
- 238000005461 lubrication Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000000725 suspension Substances 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 230000001133 acceleration Effects 0.000 description 4
- 230000005284 excitation Effects 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000004378 air conditioning Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- 238000011056 performance test Methods 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/027—Specimen mounting arrangements, e.g. table head adapters
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Sliding-Contact Bearings (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The application discloses an inverted tilting pad sliding bearing test bed, which comprises: a frame; the main shaft is used for installing the tilting pad sliding bearing and is rotatably supported on the frame; the loading seat is fixed on the shell of the tilting pad sliding bearing; one end of the flexible connecting piece is connected to the frame in a hanging way, and the other end of the flexible connecting piece is fixedly connected with the loading seat; the output end of the loader acts on the loading seat; and the output end of the vibration exciter acts on the loading seat. Through the test bed, the dynamic characteristic and static characteristic test and the performance research of the sliding bearing are completed by simulating the tilting pad bearing in normal operation, and the test bed provides help for further optimizing the bearing structure.
Description
Technical Field
The application relates to the technical field of bearing loading tests, in particular to an inverted tilting pad sliding bearing test bed.
Background
In many large-scale rotating machinery equipment, such as water turbines, steam turbines, nuclear power plants and the like, the common sliding bearing cannot meet the requirements of high bearing performance, low power consumption and the like, and the tilting pad sliding bearing has higher bearing capacity and more stable performance compared with the traditional bearing due to the multi-pad structure and self-adaptive aligning.
At present, most of dynamic performance and static performance tests for the tilting pad sliding bearing are based on theoretical calculation and CFD simulation calculation, and no actual test is performed.
Disclosure of Invention
In view of the above, the embodiment of the application provides an inverted tilting pad sliding bearing test bed for realizing the test of dynamic performance and static performance of a tilting pad sliding bearing.
According to an embodiment of the present application, there is provided an inverted tilting pad slide bearing test stand, including:
a frame;
the main shaft is used for installing the tilting pad sliding bearing and is rotatably supported on the frame;
the loading seat is fixed on the shell of the tilting pad sliding bearing;
one end of the flexible connecting piece is connected to the frame in a hanging way, and the other end of the flexible connecting piece is fixedly connected with the loading seat;
the output end of the loader acts on the loading seat; a kind of electronic device with high-pressure air-conditioning system
The output end of the vibration exciter acts on the loading seat.
Further, the loader includes:
a linear telescopic mechanism; a kind of electronic device with high-pressure air-conditioning system
The pressure sensor is arranged at the output end of the linear telescopic mechanism, and acts on the shell of the tilting pad sliding bearing through the telescopic action of the linear telescopic mechanism.
Further, the linear telescopic mechanism adopts a structure that a worm and gear drives a screw rod to axially move.
Further, the method further comprises the following steps: and the motor is used for driving the main shaft to rotate.
Further, the method further comprises the following steps: and the transmission mechanism is connected between the motor and the main shaft.
Further, the transmission mechanism comprises a first coupler, a belt transmission mechanism and a second coupler which are sequentially connected.
Further, the motor further comprises a torque measuring device, and the torque measuring device is connected between the motor and the main shaft.
Further, still include oil circuit system, oil circuit system includes:
an oil pump; a kind of electronic device with high-pressure air-conditioning system
The oil inlet and outlet pipeline is communicated with the oil outlet of the oil pump, and the other end of the oil inlet and outlet pipeline is communicated with the oil inlet of the tilting pad sliding shaft.
Further, the vibration exciter also comprises an angle adjusting piece, and the vibration exciter is installed on the frame through the angle adjusting piece.
Further, the angle adjusting piece comprises a mounting plate and an adjusting plate, the vibration exciter is fixed on the mounting plate, the mounting plate is fixed on the adjusting plate, an adjusting ring groove is formed in the adjusting plate, and a bolt penetrates through the adjusting ring groove and is screwed onto the frame after the angle of the bolt is adjusted.
The technical scheme provided by the embodiment of the application can comprise the following beneficial effects:
according to the embodiment, the load can be changed through the loader, so that the static characteristics (such as the thickness of an oil film, the temperature of lubricating oil, the pressure of lubricating oil and the like) of the sliding bearing can be measured at a later stage. In the dynamic performance test, the loading seat is excited by the exciter to indirectly realize the excitation of the tilting pad bearing, and the dynamic response test of the bearing can be carried out after the excitation.
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 as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application.
Fig. 1 is a schematic perspective view of an inverted tilting pad slide bearing test stand according to an exemplary embodiment.
Fig. 2 is a left side view of fig. 1.
FIG. 3 is a schematic perspective view of a transmission mechanism shown according to an exemplary embodiment;
FIG. 4 is a schematic perspective view of a spindle support structure and a load port shown according to an exemplary embodiment;
FIG. 5 is a schematic view in full section of FIG. 4;
FIG. 6 is a schematic perspective view of a loader and exciter, according to an exemplary embodiment;
FIG. 7 is a schematic perspective view of a vibration exciter according to an exemplary embodiment;
FIG. 8 is a schematic perspective view of a loader shown according to an example embodiment;
FIG. 9 is a schematic perspective view of a tilt pad slide bearing according to an exemplary embodiment;
FIG. 10 is a schematic diagram illustrating a two-dimensional structure of a tilt pad plain bearing according to an exemplary embodiment.
The reference numerals in the figures are:
100. tilting pad sliding bearing; 101. an oil hole; 102. an oil groove;
200. a frame;
300. a main shaft; 301. a case; 302. angular contact ball bearings; 303. a flange bearing end cap;
400. a loading seat;
500. a flexible connection member; 501. a suspension ring screw; 502. a wire rope;
600. a loader; 601. a pressure sensor; 602. hand-operated wheels; 603. a worm wheel; 604. a worm; 605. a screw rod; 606. a flange plate; 607. a housing;
700. a vibration exciter; 701. an angle adjusting member; 7011. a mounting plate; 7012. an adjusting plate;
800. a motor; 801. a first coupling; 802. a belt drive mechanism; 803. a second coupling; 804. a first drive shaft; 805. a first rolling bearing seat; 806. a second drive shaft; 807. a second rolling bearing seat; 808. a first pulley; 809. a second pulley; 810. a wedge band; 811. a torque measuring device; 812. a third coupling;
900. an oil circuit system; 901. an oil pump; 902. and an oil inlet and outlet pipeline.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the application. Rather, they are merely examples of apparatus and methods consistent with aspects of the application as detailed in the accompanying 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 specification 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 or all possible combinations of one or more of the associated listed items.
It should be understood that although the terms first, second, third, etc. may be used herein to describe various information, these information should not be limited by 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 application. The word "if" as used herein may be interpreted as "at … …" or "at … …" or "responsive to a determination", depending on the context.
As shown in fig. 1, an embodiment of the present application provides an inverted tilting pad sliding bearing test stand, which is characterized by comprising: the device comprises a frame 200, a main shaft 300 for mounting the tilting pad sliding bearing 100, a loading seat 400, a flexible connecting piece 500, a loader 600 and a vibration exciter 700, wherein the main shaft 300 is rotatably supported on the frame 200; the loading seat 400 is fixed on the shell of the tilting pad sliding bearing 100; one end of the flexible connecting piece 500 is suspended and connected to the frame 200, and the other end is fixedly connected to the loading seat 400; the output of the loader 600 acts on the load socket 400; and the output of the exciter 700 acts on the load bed 400.
As can be seen from the above embodiments, the present application can realize load variation through the loader 600, so as to facilitate the measurement of static characteristics (such as oil film thickness, lubricating oil temperature, lubricating oil pressure, etc.) of the sliding bearing in the later stage. In the dynamic performance test, the loading seat 400 is excited by the exciter 700 to indirectly realize the excitation of the tilting pad bearing, and the dynamic response test of the bearing can be performed after the excitation.
It should be noted that, the tilting pad sliding bearing 100 to be tested according to the embodiment of the present application is mounted on the main shaft 300 (i.e. located in the middle and not supported), and the left and right ends of the main shaft 300 are supported by the bearings, so that the structure is called an inverted structure, and the structure is just opposite.
In an embodiment of the present application, further includes: a motor 800 for driving the spindle 300 to rotate.
Further, the method further comprises the following steps: a transmission mechanism connected between the motor 800 and the main shaft 300.
Specifically, the transmission mechanism includes a first coupling 801, a belt transmission mechanism 802, and a second coupling 803, which are sequentially connected. More specifically, the first coupling 801 is a quincuncial coupling, and the first transmission shaft 804 is mounted on the first rolling bearing seat 805, and the quincuncial coupling is connected to the rotating shaft of the motor 800 and one end of the first transmission shaft 804. The second transmission shaft 806 is mounted on the second rolling bearing seat 807, the belt transmission mechanism 802 comprises a first belt pulley 808, a second belt pulley 809 and a wedge belt 810, the first belt pulley 808 is mounted at the other end of the first transmission shaft 804, the second belt pulley 809 is mounted at one end of the second transmission shaft 806, the wedge belt 810 is sleeved between the first belt pulley 808 and the second belt pulley 809, the second coupling 803 adopts a quincuncial coupling, and the other end of the second transmission shaft 806 is connected with the main shaft 300. By adopting the belt transmission mechanism 802, on one hand, the driving motor 800 can be prevented from being directly connected with the main shaft 300 to cause the main shaft 300 to be subjected to additional bending moment, and the unloading effect can be realized; on the other hand, the first belt pulley 808 may be a large belt pulley, and the second belt pulley 809 may be a small belt pulley, which may perform a speed increasing function; meanwhile, the belt transmission mechanism 802 can also have a certain buffering and vibration absorbing function, and the overall structure layout is more reasonable.
Further, a torque measuring device 811 is further included, and the torque measuring device 811 is connected between the motor 800 and the spindle 300, and is used for measuring the torque output by the motor 800 to the spindle 300. Specifically, the second coupling 803 is connected to the other end of the second transmission shaft 806 and one end of the torque measuring device 811, one end of the torque measuring device 811 is connected to the main shaft 300 through a third coupling 812, the third coupling 812 is a diaphragm coupling, the diaphragm coupling has strong misalignment compensation capability, and is convenient to disassemble and assemble, and in the process of replacing the test bearing and the main shaft 300, the diaphragm coupling and the transmission system do not need to be disassembled due to certain adjustability in the axial direction.
In an embodiment of the present application, a supporting structure of the spindle 300 is also designed, which comprises a case 301, on which a pair of angular contact ball bearings 302 are mounted, the spindle 300 being mounted on the pair of angular contact ball bearings 302, the pair of angular contact ball bearings 302 being axially positioned by a flange-type bearing cap 303.
In order to facilitate the installation of the tilting pad sliding bearing 100, the loading seat 400 is designed to be split, and the loader 600 can indirectly apply load to the main shaft 300 through an oil film through the bearing loading seat 400 to replace the working load of the main shaft 300 in actual working conditions. One end of the loading seat 400 is limited by a shaft shoulder, the other end of the loading seat is axially positioned by a sleeve with a flange on a single side, and the flange of the sleeve is kept in contact with the tilting pad bearing oil baffle ring.
In an embodiment of the present application, the loader 600 is installed upside down, and the loader 600 needs to overcome the tension of the flexible connection member 500, so that the flexible connection member 500 is deformed, which is advantageous for forming dynamic oil film and swinging of the bearing shell. The loader 600 includes: the linear telescopic mechanism and the pressure sensor 601, the pressure sensor 601 is installed at the output end of the linear telescopic mechanism, the linear telescopic mechanism stretches to act on the shell of the tilting pad sliding bearing 100, the loader 600 can change the load, and the later measurement of the static characteristics (such as oil film thickness, lubricating oil temperature, lubricating oil pressure and the like) of the sliding bearing is facilitated.
Further, the linear telescopic mechanism mainly provides telescopic motion in a linear direction, the linear telescopic mechanism adopts a structure that a worm gear 603 and a worm 604 drive a screw rod to axially move, and specifically comprises the worm gear 603, the worm 604, the screw rod 605 and a shell 607, the worm gear 603 is meshed with the worm 604, the worm gear 603 is supported on the shell 607 through a bearing, a through hole is formed in the shell 607, a first internal thread is formed in the through hole, a second internal thread is formed in an inner ring of the worm gear 603, the screw rod 605 is arranged in the inner ring of the worm gear 603 in a penetrating manner and in the through hole in a penetrating manner, and is meshed with the first internal thread and the second internal thread respectively, the worm gear 603 is driven to rotate through the worm 604, and the worm gear 603 is driven to rotate under the meshing transmission effect of the first internal thread and the second internal thread and the external thread of the screw rod 605 to simultaneously perform telescopic motion, so that feeding is realized. Since the screw 605 performs both rotational and telescopic movements, the pressure sensor 601 preferably adopts an S-shaped tension pressure sensor.
The pressure sensor 601 is mounted at the loading end of the screw 605, and in order to avoid direct contact between the pressure sensor 601 and the loading seat 400, a flange 606 may be fixed at the end of the pressure sensor 601, i.e. two ends of the pressure sensor 601 are respectively connected between the loading end of the screw 605 and the flange 606, and the flange 606 acts on the loading seat 400.
In order to simplify the structure, the worm 604 can be directly driven by a hand-operated wheel 602 connected with the worm 604, and of course, the hand-operated wheel 602 can be driven by a motor, and the applied load can be controlled by a pressure sensor 601, so that the load applied by the bearing in the actual working condition can be simulated, and the load can be accurately controlled due to the fact that the worm and gear mechanism has larger transmission ratio.
In order to enable the bearing bush to float better under the hydrodynamic lubrication condition, the loader 600 needs to have certain flexibility, for this purpose, the loader seat 400 and the tilting pad sliding bearing 100 are matched and then sleeved on the main shaft 300 in a hollow mode, the side wall of the loader seat 400 is provided with a suspension ring screw 501, one end of the loader seat 400 is fixed on the frame 200 through a steel wire rope 502, positioning in the vertical direction is achieved through the steel wire rope 502, and two ends of the steel wire rope 502 are locked through horseshoe-shaped rope clamps.
Specifically, the suspension screw 501 is an elongated screw, and four screws are respectively fixed on the cross beam in an inverted manner, and compared with the common suspension screw 501, the length of the bolt rod is longer, so that the tightness of the steel wire rope 502 can be adjusted by respectively controlling the depth of screwing the suspension screw into the cross beam, and the upper loading seat 400 is ensured to be kept horizontal.
In an embodiment of the present application, the system further includes an oil circuit system 900, where the oil circuit system 900 includes: the oil pump 901 and the oil inlet and outlet pipeline 902, one end of the oil inlet and outlet pipeline 902 is communicated with an oil outlet of the oil pump 901, and the other end of the oil inlet and outlet pipeline 902 is communicated with an oil inlet of the tilting pad sliding shaft.
Because the spindle 300 rotates at a higher speed, the tilting-pad bearings and the angular ball bearings 302 are lubricated respectively, the tilting-pad sliding bearings 100 directly guide lubricating oil into the side wall lubricating oil holes 101 of the loading base 400, the lubricating oil can lubricate the bearings along the empty direction, the angular ball bearings 302 are lubricated by oil injection, and the nozzle mounting plates 7011 are mounted at a certain height, so that the nozzle alignment rollers are lubricated by oil injection.
The side wall of the tilting pad sliding bearing 100 is provided with a plurality of oil holes 101, the oil holes are distributed at the joint of the inner tile of the bearing, the lubricating oil is introduced into the outer ring oil groove 102 of the tilting pad bearing through the oil holes 101 by an oil pipe through an oil station, the lubricating oil hole 101 of the loading seat 400 is arranged above the side, and the lubricating oil in the oil groove 102 can enter the gap between the bearing bush and the main shaft 300 through an oil inlet and form hydrodynamic lubrication.
The oil lubricated by the tilting pad sliding bearing 100 is discharged to the box 301 from the two end surfaces, and reenters the oil station through the oil return hole 101 on the side wall of the box 301, and can be reused through the filtering and condensing effects of the oil station.
The angular contact ball bearings 302 on two sides of the box 301 realize a lubrication effect through oil injection, the nozzle is fixed on the nozzle mounting plate 7011, the nozzle mounting plate 7011 is fixed on the inner wall of the box 301 through screws, and the nozzle is positioned right above the main shaft 300 and is aligned with the balls, so that the sprayed oil can further lubricate other balls under the action of gravity, and a good lubrication effect is realized.
In an embodiment of the present application, the vibration exciter 700 is used to test the dynamic performance of the tilting pad sliding bearing 100, and the vibration exciter 700 may be mounted on the frame 200 through the angle adjusting member 701.
In an embodiment of the present application, the angle adjusting member 701 is further included, the vibration exciter 700 is mounted on the frame 200 through the angle adjusting member 701, and the angle of the vibration exciter 700 is adjusted through the angle adjusting member 701, so as to implement that the dynamic load is always vertically loaded on the loading seat 400.
Specifically, the angle adjusting member 701 includes a mounting plate 7011 and an adjusting plate 7012, the vibration exciter 700 is fixed on the mounting plate 7011, the mounting plate 7011 is fixed on the adjusting plate 7012, and the adjusting plate 7012 is provided with an adjusting ring groove, so that a bolt can be screwed onto the frame 200 after passing through the adjusting ring groove and adjusting the angle. Preferably, the ejector pins of the exciter 700 are always in a vertical relationship with the sides of the load bed 400.
The working process of the inverted tilting pad sliding bearing test bed is as follows:
firstly, the motor 800 is started, power is transmitted to the main shaft 300 through the wedge belt 810, meanwhile, the oil pump 901 is started to lubricate the bearing, after a period of time, the motor 800 reaches a stable working state, the tilting pad sliding bearing 100 forms hydrodynamic lubrication, an inner layer dynamic pressure oil film and an outer layer static pressure oil film are formed, the inner layer oil film mainly performs lubrication, and the outer layer oil film has a certain bearing capacity. At this time, the hand wheel 602 is rotated to lower the screw rod 605 to apply a load, and after the indication of the pressure sensor 601 reaches a specified size, the loading is stopped, and at this time, by reading the values of the oil pressure sensor 103 and the oil temperature sensor 104 (the oil pressure sensor 103 and the oil temperature sensor 104 are both mounted on the tilting pad sliding bearing 100, refer to fig. 10, and are respectively used for collecting and testing the oil film temperature and pressure, 18 total (9 oil temperatures+9 oil pressures) are shown in fig. 10, and are respectively located on two end surfaces (one front surface and one rear surface)), the static parameters of the test bearing can be measured. In the dynamic test, other test steps are kept consistent, a generator of the vibration exciter 700 is turned on after that, a certain vibration wave is generated to excite the loading seat 400, the data of the acceleration sensors 105 (four acceleration sensors are shown in fig. 4, two acceleration sensors are arranged on two sides of the loading seat, and the other two acceleration sensors are arranged on the other two box bodies to respectively test vibration signals of the bearing and the box bodies, so that the dynamic characteristics of the system are obtained), and the dynamic performance of the test bearing oil film can be obtained after the test is finished through processing.
Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of the application 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 application 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 is to be understood that the application is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the application is limited only by the appended claims.
Claims (8)
1. An inverted tilt-pad plain bearing test stand, comprising:
a frame;
the main shaft is used for installing the tilting pad sliding bearing and is rotatably supported on the frame;
the loading seat is fixed on the shell of the tilting pad sliding bearing;
one end of the flexible connecting piece is connected to the frame in a hanging way, and the other end of the flexible connecting piece is fixedly connected with the loading seat;
the output end of the loader acts on the loading seat; the output end of the vibration exciter acts on the loading seat;
the vibration exciter is arranged on the frame through the angle adjusting piece;
the angle adjusting piece comprises a mounting plate and an adjusting plate, the vibration exciter is fixed on the mounting plate, the mounting plate is fixed on the adjusting plate, an adjusting ring groove is formed in the adjusting plate, and a bolt penetrates through the adjusting ring groove and is screwed onto the frame after the angle of the bolt is adjusted.
2. An inverted tilt-pad plain bearing test bed according to claim 1, wherein the loader comprises:
a linear telescopic mechanism; and the pressure sensor is arranged at the output end of the linear telescopic mechanism, and acts on the shell of the tilting pad sliding bearing through the telescopic action of the linear telescopic mechanism.
3. The inverted tilting pad slide bearing test bed according to claim 2, wherein the linear telescoping mechanism adopts a structure in which a worm gear drives a screw rod to axially move.
4. The inverted tilt-pad plain bearing test stand of claim 1, further comprising: and the motor is used for driving the main shaft to rotate.
5. The inverted tilt-pad plain bearing test stand of claim 4, further comprising: and the transmission mechanism is connected between the motor and the main shaft.
6. The inverted tilt-pad plain bearing test bed according to claim 5, wherein the drive mechanism comprises a first coupling, a belt drive mechanism and a second coupling connected in sequence.
7. The inverted tilt-pad plain bearing test stand according to claim 1, further comprising a torque measuring device connected between the motor and the spindle.
8. The inverted tilt-pad plain bearing test bed according to claim 1, further comprising an oil circuit system comprising:
an oil pump; 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 an oil inlet of the tilting pad sliding shaft.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111269413.6A CN114001960B (en) | 2021-10-29 | 2021-10-29 | Inverted tilting pad sliding bearing test bed |
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| CN202111269413.6A CN114001960B (en) | 2021-10-29 | 2021-10-29 | Inverted tilting pad sliding bearing test bed |
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| CN114001960A CN114001960A (en) | 2022-02-01 |
| CN114001960B true CN114001960B (en) | 2023-12-12 |
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| CN102121875A (en) * | 2010-12-17 | 2011-07-13 | 大连理工大学 | Dynamic loading comprehensive experimental table for gas bearing-rotor system |
| CN201909714U (en) * | 2010-12-17 | 2011-07-27 | 大连理工大学 | Comprehensive dynamic loading test platform for gas bearing-rotor systems |
| CN104880315A (en) * | 2015-05-27 | 2015-09-02 | 西安交通大学 | High speed rolling bearing dynamic performance testing machine using tilting-pad bearing to support |
| CN105865792A (en) * | 2016-05-26 | 2016-08-17 | 西北工业大学 | Textured sliding bearing experiment table with bearing rotating and journal fixed |
| CN110296838A (en) * | 2019-07-08 | 2019-10-01 | 上海交通大学 | Bearing shell testing machine for testing performance and test method |
| CN110542556A (en) * | 2019-10-09 | 2019-12-06 | 浙江申发轴瓦股份有限公司 | Tilting pad sliding bearing test box, test bench and test method |
| CN210487269U (en) * | 2019-10-09 | 2020-05-08 | 浙江申发轴瓦股份有限公司 | Tilting pad sliding bearing test box and test bench |
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