CN101881696B - Flexible foil gas thrust bearing performance test bed with rolling friction pair - Google Patents
Flexible foil gas thrust bearing performance test bed with rolling friction pair Download PDFInfo
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- CN101881696B CN101881696B CN2010101916002A CN201010191600A CN101881696B CN 101881696 B CN101881696 B CN 101881696B CN 2010101916002 A CN2010101916002 A CN 2010101916002A CN 201010191600 A CN201010191600 A CN 201010191600A CN 101881696 B CN101881696 B CN 101881696B
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Abstract
The invention relates to a flexible foil gas thrust bearing performance test bed with a rolling friction pair, which comprises a rotator, wherein one end of the rotator is connected with an asynchronous motor, the middle of the rotator is supported by a high-speed angular contact ball bearing, the other end of the rotator is provided with a thrust bearing thrust disc, one side of the thrust bearing thrust disc is provided with a thrust bearing, one end of an extension bar of a pneumatic cylinder is connected with a pneumatic piston, the other end of the pneumatic cylinder is connected with a thrust sensor mounting base, a rolling bearing base is provided with an eddy current displacement sensor, the thrust sensor is fit on the thrust bearing base, the output end of the sensor is connected with a computer, the asynchronous motor drives the rotator and the thrust bearing thrust disc to rotate, the flexible foil gas thrust bearing is slowly contacted with the thrust bearing thrust disc, and are separated from each other when reaching the taking-off rotation speed of the flexible foil gas thrust bearing, then the eddy current displacement sensor and the thrust sensor start to sample data, and the computer analyzes the data to obtain corresponding baring capability and static characteristic factor. The invention has the advantage of high testing accuracy.
Description
Technical field
The present invention relates to the technical field of bearing performance test, relate in particular to a kind of flexible foil gas thrust bearing performance test bed with rolling friction pair.
Background technology
Elastic foil tablet thrust bearing is at high speed rotating the time; Have that volume is little, compact conformation, make lubricant medium, advantage such as pollution-free with air, the main test index of the performance of elastic foil bearing is load-bearing capacity and static characteristic coefficient, still; Since when work thrust disc and bearing elastic top layer paillon foil between the gap very little; Generally have only tens microns, load-bearing capacity and static characteristic coefficient are difficult to accurately measure, and also do not have special measuring equipment at present.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art; The object of the present invention is to provide a kind of flexible foil gas thrust bearing performance test bed with rolling friction pair; Can accurately measure the load-bearing capacity and the static characteristic coefficient of elastic foil bearing, have the high advantage of measuring accuracy.
To achieve these goals, the technical scheme taked of the present invention is:
A kind of flexible foil gas thrust bearing performance test bed with rolling friction pair; Comprise rotor 3; Rotor 3 one ends are connected with asynchronous machine 1 through flexible connection 2, and by 5 supportings of two high-speed angular contact ball bearings, the other end of rotor 3 is equipped with thrust bearing thrust disc 30 in the middle of the rotor 3.
Described high-speed angular contact ball bearing 5 is installed on the rolling bearing pedestal 10; Rolling bearing pedestal 10 is connected on the testing table base 4; Oil-air lubrication air supply pipe 13 is equipped with in rolling bearing pedestal 10 tops; End cover 14 is equipped with in its both sides, and oil gas collection device 16 is contained in the bottom of end cover 14, and impingement ring 17 is contained between pretension end cap 7 and the high-speed angular contact ball bearing 5.
One side of described thrust bearing thrust disc 30 is equipped with thrust bearing 20; Thrust bearing 20 is connected on the thrust metal 22, and ball 23 is installed in the raceway of thrust metal 22, and pneumatic cylinder extension bar 24 1 ends are connecting pneumatic cylinder piston 25; And be contained in the pneumatic cylinder cylinder body 26; The other end is connected with thrust pickup mount pad 38, and thrust metal 22 is contained on the thrust metal supporting seat 31, and rolling bearing pedestal 10 is equipped with eddy current displacement sensor 36 near a side of thrust metal 20; Thrust pickup 37 is fitted on the inner side end of thrust metal 22, and the signal output part of eddy current displacement sensor 36, thrust pickup 37 links to each other with computing machine.
The working speed of described flexible connection 2 is 45000 commentaries on classics/min～80000 commentaries on classics/min, and axially reaching radially, alignment error is 0～0.8mm.
Described high-speed angular contact ball bearing 5 is for having the high speed spring bearing of pretension and oil-air lubrication, and its high workload rotating speed is 100000 commentaries on classics/min.
Described thrust bearing 20; Comprise thrust bearing bottom paillon foil 34, eight identical fan-shaped thrust bearing top foils 32 and thrust bearing arch paper tinsel 33; One end of top foil 34 and arch paper tinsel 33 is welded on the bottom paillon foil 34 and along bottom paillon foil 34 and circumferentially evenly distributes, and its high workload rotating speed is 100000 commentaries on classics/min.
Described thrust pickup 37 is for having the force transducer of piezoelectric effect, along axial installation.
Described eddy current displacement sensor 36 is an eddy current displacement sensor, for symmetria bilateralis is installed.
The mounting means of described thrust metal 22 is for being installed in the mounting means of the rolling pair of the low friction on the thrust metal supporting seat 31 through double ball 23.
Principle of work of the present invention:
Driving rotor 3 by asynchronous machine 1 through flexible clutch 2 rotates; The thrust bearing thrust disc 30 that is fixed on testing rotor 3 one ends is followed rotor 3 and is rotated synchronously, and starts 13 pairs of high-speed angular contact ball bearings 5 of oil-air lubrication air supply pipe and be lubricated, and incipient stage flexible foil gas thrust bearing 20 slowly contacts with thrust bearing thrust disc 30; When reaching the departure rotary speed of flexible foil gas thrust bearing 20; Flexible foil gas thrust bearing 20 takes off and thrust bearing thrust disc 30 disengages, and gets into stable state, and this moment, eddy current displacement sensor 36 began sampled datas with thrust pickup 37; The working speed that reaches setting when the rotating speed of asynchronous machine 1 after a period of stabilisation; Sampling finishes, and computing machine is analyzed sampled data at last, just can obtain foil gas thrust bearing load-bearing capacity and static characteristic coefficient under a certain rotating speed; Change rotating speed and other parameters, can obtain corresponding load-bearing capacity and static characteristic coefficient.
Because the present invention is through the Induction Motor-Driven rotor; The foil gas thrust bearing that drive is installed on the thrust disc of rotor one end rotates; Can be determined at foil gas thrust bearing load-bearing capacity and static characteristic coefficient under the friction speed; Thrust pickup directly is fitted on the end face of thrust metal, and eddy current displacement sensor is fitted on the outer end face of thrust disc, in addition owing to adopt rolling friction pair between thrust metal and bearing; Friction force is very little; Thereby can measure the axial thrust that thrust bearing produces exactly, and can also measure flexible foil gas thrust bearing load-bearing capacity and static characteristic coefficient under the different rotating speeds, have the high advantage of measuring accuracy.
Description of drawings
Below in conjunction with accompanying drawing structural principle of the present invention and principle of work are done further explain.
Fig. 1 is the structural front view of flexible foil gas thrust bearing proving installation of the present invention.
Fig. 2 is the structure vertical view of flexible foil gas thrust bearing proving installation of the present invention.
Fig. 3 is that the structure A-A of flexible foil gas thrust bearing proving installation of the present invention is to cut-open view.
Fig. 4 is the structural representation of flexible foil gas thrust bearing to be tested, and wherein (a) is the one-piece construction synoptic diagram, (b) is thrust bearing top foil synoptic diagram, (c) is thrust bearing ripple paper tinsel synoptic diagram.
Embodiment
Below in conjunction with accompanying drawing this bright structural principle and principle of work is done further explain.
Referring to Fig. 1, Fig. 2 and Fig. 3; A kind of flexible foil gas thrust bearing performance test bed with rolling friction pair; Comprise rotor 3; Rotor 3 one ends are connected with asynchronous machine 1 through flexible connection 2, and by 5 supportings of two high-speed angular contact ball bearings, the other end of rotor 3 is equipped with thrust bearing thrust disc 30 in the middle of the rotor 3.
Referring to Fig. 1, Fig. 2 and Fig. 3, described high-speed angular contact ball bearing 5 is installed on the rolling bearing pedestal 10, and pretension bolt of cover 6 is connected on the pretension end cap 7; Preloading spring 8 is contained in the pretension end cap 7, and end cap packing ring 9 is contained in rolling bearing pedestal 10 1 sides, and connects through pretension bolt of cover 6; Rolling bearing pedestal 10 is connected on the testing table base 4 through taper bolt 11 and bolt 12; Oil-air lubrication air supply pipe 13 is equipped with in rolling bearing pedestal 10 tops, and end cover 14 is equipped with in its both sides, connects through end cover bolt 15; Oil gas collection device 16 is contained in the bottom of end cover 14, and impingement ring 17 is contained between pretension end cap 7 and the high-speed angular contact ball bearing 5.
Referring to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, a side of described thrust bearing thrust disc 30 is equipped with thrust bearing 20, and set nut 27, lock washer 28 and packing ring 29 are housed on the rotor 3 successively; Thrust bearing thrust disc 30 is connected on the rotor 3, and thrust bearing setting circle pin 18 is with thrust bearing pressure ring 19 and thrust bearing 20 location, and the other end is free; Top foil 32 is a conical surface near the part of welding end; Can form convergent air film gap with thrust disc 30 surfaces, thrust bearing 20 is connected on the thrust metal 22 through thrust bearing coupling bolt 21, and ball 23 is installed in the raceway of thrust metal 22; Pneumatic cylinder extension bar 24 1 ends are connecting pneumatic cylinder piston 25; And be contained in the pneumatic cylinder cylinder body 26, the other end is connected with thrust pickup mount pad 38, and thrust metal 22 is contained on the thrust metal supporting seat 31 with ball 23; Rolling bearing pedestal 10 is equipped with displacement transducer erecting frame 35 near a side of thrust metal 20; Eddy current displacement sensor 36 is housed on it, and thrust pickup 37 is contained on the thrust pickup mount pad 38, and pneumatic cylinder extension bar 24 heads are connected with thrust pickup mount pad 38; Thrust pickup 37 is fitted on the inner side end of thrust metal 22, and the signal output part of eddy current displacement sensor 36, thrust pickup 37 links to each other with computing machine.
The working speed of described flexible connection 2 is 45000 commentaries on classics/min～80000 commentaries on classics/min, and axially reaching radially, alignment error is 0～0.8mm.
Described high-speed angular contact ball bearing 5 is for having the high speed spring bearing of pretension and oil-air lubrication, and its high workload rotating speed is 100000 commentaries on classics/min.
Described thrust bearing 20; Comprise thrust bearing bottom paillon foil 34, eight identical fan-shaped thrust bearing top foils 32 and thrust bearing arch paper tinsel 33; One end of top foil 34 and arch paper tinsel 33 is welded on the bottom paillon foil 34 and along bottom paillon foil 34 and circumferentially evenly distributes, and its high workload rotating speed is 100000 commentaries on classics/min.
Described thrust pickup 37 is for having the force transducer of piezoelectric effect, along axial installation.
Described eddy current displacement sensor 36 is an eddy current displacement sensor, for symmetria bilateralis is installed.
The mounting means of described thrust metal 22 is for being installed in the mounting means of the rolling pair of the low friction on the thrust metal supporting seat 31 through double ball 23.
Principle of work of the present invention:
The process of the static characteristics of test unit test thrust bearing 20 of the present invention is after the Installation and Debugging of experiment table each several part are finished, to drive rotor 3 by asynchronous machine 1 through flexible clutch 2 and rotate; The thrust bearing thrust disc 30 that is fixed on testing rotor 3 one ends is followed rotor 3 and is rotated synchronously, and starts 13 pairs of high-speed angular contact ball bearings 5 of oil-air lubrication air supply pipe and be lubricated, and incipient stage flexible foil gas thrust bearing 20 slowly contacts with thrust bearing thrust disc 30; When reaching the departure rotary speed of flexible foil gas thrust bearing 20; Flexible foil gas thrust bearing 20 takes off and thrust bearing thrust disc 30 disengages, and gets into stable state, and this moment, eddy current displacement sensor 36 began sampled datas with thrust pickup 37; Eddy current displacement sensor 36 is used to measure the axial deformation of thrust bearing 20; Thrust pickup 37 is used to measure the suffered axial thrust of thrust bearing 20, the working speed that reaches setting when the rotating speed of asynchronous machine 1 after a period of stabilisation, sampling finishes; Sampled data is analyzed; Just can obtain foil gas thrust bearing load-bearing capacity and static characteristic coefficient under a certain rotating speed, change rotating speed and other parameters, can obtain corresponding load-bearing capacity and static characteristic coefficient; Change rotating speed and other parameters, can obtain corresponding load-bearing capacity and static characteristic coefficient.
Among the figure: 1 is asynchronous machine, and 2 is flexible connection, and 3 is rotor, and 4 is the testing table base, and 5 is high-speed angular contact ball bearing, and 6 is the pretension bolt of cover; 7 is the pretension end cap, and 8 is preloading spring, and 9 is the end cap packing ring, and 10 is rolling bearing pedestal, and 11 is taper bolt, and 12 is bolt; 13 is the oil-air lubrication air supply pipe, and 14 is end cover, and 15 is the end cover bolt, and 16 is the oil gas collection device, and 17 is impingement ring, and 18 is thrust bearing setting circle pin; 19 is the thrust bearing pressure ring, and 20 is thrust bearing, and 21 is the thrust bearing coupling bolt, and 22 is thrust metal, and 23 is ball; 24 is the pneumatic cylinder extension bar, and 25 is pneumatic cylinder piston, and 26 is the pneumatic cylinder cylinder body, and 27 is set nut, and 28 is lock washer; 29 is packing ring, and 30 is the thrust bearing thrust disc, and 31 is the thrust metal supporting seat, and 32 is the thrust bearing top foil, and 33 is thrust bearing ripple paper tinsel; 34 is the thrust bearing connection seat, and 35 is the displacement transducer erecting frame, and 36 is eddy current displacement sensor, and 37 is thrust pickup, and 38 is the thrust pickup mount pad.
Claims (6)
1. flexible foil gas thrust bearing performance test bed with rolling friction pair; Comprise rotor (3); It is characterized in that: rotor (3) one ends are connected with asynchronous machine (1) through flexible connection (2); By two high-speed angular contact ball bearings (5) supporting, the other end of rotor (3) is equipped with thrust bearing thrust disc (30) in the middle of the rotor (3);
Described high-speed angular contact ball bearing (5) is installed on the rolling bearing pedestal (10); Rolling bearing pedestal (10) is connected on the testing table base (4); Oil-air lubrication air supply pipe (13) is equipped with in rolling bearing pedestal (10) top; End cover (14) is equipped with in its both sides, and oil gas collection device (16) is contained in the bottom of end cover (14), and impingement ring (17) is contained between pretension end cap (7) and the high-speed angular contact ball bearing (5);
The working speed of described flexible connection (2) is 45000 commentaries on classics/min～80000 commentaries on classics/min, and axially reaching radially, alignment error is 0～0.8mm;
Described high-speed angular contact ball bearing (5) is for having the high speed spring bearing of pretension and oil-air lubrication, and its high workload rotating speed is 100000 commentaries on classics/min.
2. a kind of flexible foil gas thrust bearing performance test bed with rolling friction pair according to claim 1; It is characterized in that: a side of described thrust bearing thrust disc (30) is equipped with thrust bearing (20); Thrust bearing (20) is connected on the thrust metal (22); Ball (23) is installed in the raceway of thrust metal (22); Pneumatic cylinder extension bar (24) one ends are connecting pneumatic cylinder piston (25), and are contained in the pneumatic cylinder cylinder body (26), and the other end is connected with thrust pickup mount pad (38); Thrust metal (22) is contained on the thrust metal supporting seat (31); Rolling bearing pedestal (10) is equipped with eddy current displacement sensor (36) near a side of thrust metal (20), and thrust pickup (37) is fitted on the inner side end of thrust metal (22), and the signal output part of eddy current displacement sensor (36), thrust pickup (37) links to each other with computing machine.
3. a kind of flexible foil gas thrust bearing performance test bed with rolling friction pair according to claim 2; It is characterized in that: the top foil (34) of described thrust bearing (20) and an end of support arcs paper tinsel (35) are welded on that bottom paillon foil (36) is gone up and circumferentially evenly distribute along bottom paillon foil (36), and its high workload rotating speed is 100000 commentaries on classics/min.
4. a kind of flexible foil gas thrust bearing performance test bed with rolling friction pair according to claim 2, it is characterized in that: described thrust pickup (37) is for having the force transducer of piezoelectric effect, along axial installation.
5. a kind of flexible foil gas thrust bearing performance test bed with rolling friction pair according to claim 2, it is characterized in that: described eddy current displacement sensor (36) is an eddy current displacement sensor, is that symmetria bilateralis is installed.
6. a kind of flexible foil gas thrust bearing performance test bed with rolling friction pair according to claim 2, it is characterized in that: the mounting means of described thrust metal (22) is for being installed in the mounting means of the rolling pair of the low friction on the thrust metal supporting seat (31) through double ball (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101916002A CN101881696B (en) | 2010-06-03 | 2010-06-03 | Flexible foil gas thrust bearing performance test bed with rolling friction pair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101916002A CN101881696B (en) | 2010-06-03 | 2010-06-03 | Flexible foil gas thrust bearing performance test bed with rolling friction pair |
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| Publication Number | Publication Date |
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| CN101881696A CN101881696A (en) | 2010-11-10 |
| CN101881696B true CN101881696B (en) | 2012-05-23 |
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| CN2010101916002A Expired - Fee Related CN101881696B (en) | 2010-06-03 | 2010-06-03 | Flexible foil gas thrust bearing performance test bed with rolling friction pair |
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| CN109342060A (en) * | 2018-12-04 | 2019-02-15 | 新奥能源动力科技（上海）有限公司 | The test device of axial bearing foil |
| CN114577476B (en) * | 2022-03-08 | 2024-04-09 | 重庆江增船舶重工有限公司 | Sensor mounting system and mounting method thereof |
| CN115979645B (en) * | 2023-03-22 | 2023-06-30 | 无锡蠡湖增压技术股份有限公司 | Rolling test mechanism for gas foil bearing |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101226103A (en) * | 2008-02-01 | 2008-07-23 | 西安交通大学 | Device for testing elastic foil tablet transverse bearing departure rotary speed |
| CN101226104A (en) * | 2008-02-01 | 2008-07-23 | 西安交通大学 | Device for testing elastic foil tablet thrust bearing departure rotary speed |
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