CN101363787A - Slow-speed heavy-load fibrage composite self-lubricating bearing strip performance test machine - Google Patents
Slow-speed heavy-load fibrage composite self-lubricating bearing strip performance test machine Download PDFInfo
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- CN101363787A CN101363787A CNA2008100795520A CN200810079552A CN101363787A CN 101363787 A CN101363787 A CN 101363787A CN A2008100795520 A CNA2008100795520 A CN A2008100795520A CN 200810079552 A CN200810079552 A CN 200810079552A CN 101363787 A CN101363787 A CN 101363787A
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Abstract
The invention discloses a performance tester for a low-speed heavy-load self lubrication liner of fibrage compound. The invention is characterized in that a rotating shaft (37) is installed on the wall of an enclosed box body (14) through a bearing, an outer sphere (35) with an inner hole is fixedly connected in the middle of the rotating shaft (37), a first fibrage compound self lubrication liner (12) and a second fibrage compound self lubrication liner (15) are matched with the outer sphere (35), the shaft end of the rotating shaft (37) is connected with a torsionmeter (29) through a coupling (28), the torsionmeter (29) is connected with a reduction gear (31) through a coupling (30), and the reduction gear (31) is connected with the output shaft of a servo motor (33) through a coupling (32). The performance tester can simulate the real operating mode condition of the low-speed heavy-load self lubrication liner of fibrage compound to perform frictional wear test, abrasion fatigue test and performance optimization test for the low-speed heavy-load self lubrication liner of fibrage compound, and the change of the abrasion condition and the friction force of the low-speed heavy-load self lubrication liner of fibrage compound can be monitored in real time, and meanwhile, the performance tester has the advantages of compact structure, artistic appearance and convenient operation and maintenance.
Description
Technical field
The present invention relates to a kind of slow-speed heavy-load fibrage composite self-lubricating bearing strip performance test machine.
Background technology
Self-lubricating knuckle bearing has been broken through the restriction of traditional oscillating bearing service condition, with its self-lubricating, non-maintaining, volume is little, many outstanding advantages such as in light weight, is subjected to domestic and international insider's extensive concern, its application and range of application are increasing.Particularly at national defence and aerospace field, no matter domestic or international attention degree to self-lubricating knuckle bearing is more and more higher, national defence usefulness and aviation have become one of key index of weighing various countries' helicopter and fighter plane flying quality, military service performance and cost performance with the quality of high-quality self-lubricating knuckle bearing combination property.
Over past ten years, China is at self-lubricating knuckle bearing, particularly make a lot of progress aspect the development of high-quality self-lubricating knuckle bearing in national defence and aviation: all there is breakthrough aspects such as the development of the preparation of the manufacturing process of self-lubricating knuckle bearing, assembly technology, inner and outer ring material and thermal treatment, fibrage compound self-lubricating liner, resin bonding technology and the check of self-lubricating knuckle bearing overall performance, still have sizable gap but compare with international most advanced level.
Fibrage compound self-lubricating liner is a critical material of realizing the oscillating bearing self-lubricating, and its quality, performance, quality are determining Key Performance Indicators such as the serviceable life, reliability of self-lubricating knuckle bearing to a great extent.Homemade fibrage compound self-lubricating liner quality, performance and quality can not satisfy China's national defense and the aviation requirement with high-quality self-lubricating knuckle bearing fully, and its research technique and condition seriously fall behind.Aspect fibrage composite self-lubricating bearing strip performance test, at present, China still rests on conventional test method and the general research technique, still is in blank at aspects such as the rubbing wear mechanism test of fibrage compound self-lubricating liner, fretting fatigue test, performance optimization tests.
Summary of the invention
In order to satisfy China's national defense industry and aircraft industry demand to high-quality self-lubricating knuckle bearing, the invention provides a kind of slow-speed heavy-load fibrage composite self-lubricating bearing strip performance test machine, this testing machine can not only carry out rubbing wear mechanism test, the fretting fatigue test of low-speed heave-load fibrage compound self-lubricating liner, and can carry out the performance optimization test of low-speed heave-load fibrage compound self-lubricating liner.
The technical solution adopted for the present invention to solve the technical problems is: it has an airtight casing, on the box body wall of this casing, supporting a rotating shaft by two bearings, seal with seal between rotating shaft and the casing, one end of rotating shaft stretches out outside the casing, axle head at the rotating shaft external part links to each other with the output shaft of a torque gauge by a shaft coupling, the torque gauge input shaft links to each other with the output shaft of speed reduction unit by a shaft coupling, and input shaft of speed reducer links to each other with the servomotor output shaft by a shaft coupling.Connect firmly an outer spheroid that has endoporus at the middle part of rotating shaft, what match with outer spheroid is two fibrage compound self-lubricating liners, these two fibrage compound self-lubricating liners can be identical materials, same process is made, it also can be same material, different process is made, it can also be different materials, different process is made, the surfaces externally and internally of these two fibrage compound self-lubricating liners is concentric spherical calotte, left-right symmetric at two fibrage compound self-lubricating liners is installed two liner anchor clamps, two liner anchor clamps all have an Internal Spherical Surface that matches with the liner spherical outside surface, adopt resin bonding between fibrage compound self-lubricating liner and the liner anchor clamps, left side liner anchor clamps and an afterburning guide pole connect firmly, right side liner anchor clamps and a loading lever connect firmly, on this loading lever, connecting firmly two afterburning guide poles, connect firmly one at the left end of these two afterburning guide poles and load lever, this load lever and and the afterburning guide pole that connects firmly of left side liner anchor clamps between a loading hydraulic cylinder is arranged.
The invention has the beneficial effects as follows: this invention can be simulated the real working condition condition of low-speed heave-load fibrage compound self-lubricating liner, comprise temperature, load, movement velocity, acceleration etc., carry out rubbing wear mechanism test, fretting fatigue test and the performance optimization test of low-speed heave-load fibrage compound self-lubricating liner, can monitor the wear condition of fibrage compound self-lubricating liner and the variation of friction force in real time.Also have advantages such as compact conformation, good looking appearance, operating maintenance convenience simultaneously.
Description of drawings
Fig. 1 is a low-speed heave-load fibrage compound self-lubricating gasket performance experimental machine synoptic diagram;
Fig. 2 is the A-A cut-open view of low-speed heave-load fibrage compound self-lubricating gasket performance experimental machine.
At Fig. 1, among Fig. 2,1. first load lever, the 2. first afterburning guide pole, 3. first hinge, the 4. second afterburning guide pole, 5. first box body hole, 6. second box body hole, 7. first seal, 8. stop valve, 9. liquid nitrogen path, 10. second seal, 11. first liner anchor clamps, 12. the first fibrage compound self-lubricating liner, 13. second load lever, 14. airtight casings, 15. the second fibrage compound self-lubricating liner, 16. well heaters, 17. second liner anchor clamps, 18. the 3rd seal, 19. the 3rd box body holes, 20. displacement transducer holders, 21. displacement transducer, 22. the 3rd afterburning guide poles, 23. loading hydraulic cylinders, 24. second hinge, 25. clutch shaft bearings, 26. the 4th seals, 27. second bearing, 28. first shaft couplings, 29. torque gauges, 30. second shaft coupling, 31. speed reduction units, 32. the 3rd shaft couplings, 33. servomotor, 34. the 4th box body holes, 35. outer spheroids, 36. the 5th seal, 37. rotating shafts, 38. the 5th box body holes, 39. temperature sensor, 40. liquid nitrogen jars, 41. pipelines.
Embodiment
Fig. 1, Fig. 2 are embodiment disclosed by the invention, on the box body wall of airtight casing 14, have five holes: first box body hole 5, second box body hole 6, the 3rd box body hole 19, the 4th box body hole 34, the 5th box body hole 38, the axis of first box body hole 5, second box body hole 6, the 3rd box body hole 19 is positioned at same plane, and it is parallel to each other, the axis of the 4th box body hole 34, the 5th box body hole 38 is located on the same line, and the axis of first box body hole 5, second box body hole 6, the 3rd box body hole 19 is vertical mutually with the axis of the 4th box body hole 34, the 5th box body hole 38.In the 4th box body hole 34 and the 5th box body hole 38, supporting a rotating shaft 37 by clutch shaft bearing 25, second bearing 27, one end of rotating shaft 37 reaches the outside of airtight casing 14, end at the external part of rotating shaft 37 links to each other with the output shaft of torque gauge 29 by first shaft coupling 28, the input shaft of torque gauge 29 links to each other with the output shaft of speed reduction unit 31 by second shaft coupling 30, and the input shaft of speed reduction unit 31 links to each other with the output shaft of servomotor 33 by the 3rd shaft coupling 32.Seal with the 4th seal 26 and the 5th seal 36 between the 4th box body hole 34 of rotating shaft 37 and airtight casing 14, the 5th box body hole 38.Connecting firmly the outer spheroid 35 of a band endoporus at the middle part of rotating shaft 37, between rotating shaft 37 and the outer spheroid 35 is to removably connect, after both are bound up, be an integral body, can not produce the relative displacement of any way each other, both can be taken apart when needed.What match with the spherical outside surface of outer spheroid 35 is the first fibrage compound self-lubricating liner 12 and the second fibrage compound self-lubricating liner 15, the surfaces externally and internally of the first fibrage compound self-lubricating liner 12 and the second fibrage compound self-lubricating liner 15 is concentric spherical calotte, the first liner anchor clamps 11 are installed on the left side at the first fibrage compound self-lubricating liner 12, install between the second liner anchor clamps, 17, the first liner anchor clamps 11 and the second afterburning guide pole 4 to removably connecting on the right side of the second fibrage compound self-lubricating liner 15; For removably connecting, after two connected pieces of finger that removably connect here are installed together, can not produce any type of relative displacement between the two between the second liner anchor clamps 15 and the second loading lever 13, when needs, both can be taken apart.Connecting firmly the first afterburning guide pole 2 and the 3rd afterburning guide pole 22 on the second loading lever 13, connecting firmly first in the left part of the first afterburning guide pole 2 and the 3rd afterburning guide pole 22 and loading lever 1.With 7 sealings of first seal, with 10 sealings of second seal, seal with the 3rd seal 18 between the 3rd afterburning guide pole 22 and the 3rd box body hole 19 between the second afterburning guide pole 4 and second box body hole 6 between the first afterburning guide pole 2 and first box body hole 5.The left side of the second afterburning guide pole 4 links to each other with the piston rod of loading hydraulic cylinder 23 by first hinge 3, the cylinder body of loading hydraulic cylinder 23 loads lever 1 by second hinge 24 and first and links to each other, near the left side of the second afterburning guide pole 4, also connecting firmly a displacement transducer holder 20, clamping displacement transducer 21 on displacement transducer holder 20, be that displacement transducer 21 removably connects by the displacement transducer holder 20 and second afterburning guide pole 4 formation, the measuring head of displacement transducer 21 withstands on first and loads on the right side of lever 1.A liquid nitrogen path 9 is arranged on the top box body wall of airtight casing 14, there is a stop valve 8 in the outside of liquid nitrogen path 9, stop valve 8 links to each other with liquid nitrogen jar 40 by pipeline 41, also has a well heater 16 and a temperature sensor 39 in the inside of airtight casing 14.
Servomotor 33 is done the rotating campaign, drive rotating shaft 37 and make crankmotion by the 3rd shaft coupling 32, speed reduction unit 31, second shaft coupling 30, torque gauge 29, first shaft coupling 28, can carry out different set to corner size, rotational frequency, rotational angular velocity and the angle of rotation acceleration of servomotor 33 rotating campaigns by control system, so just can simulate the various motion operating modes of fibrage compound self-lubricating liner.
Loading hydraulic cylinder 23, second hinge 24, first load lever 1, first afterburning guide pole the 2, the 3rd afterburning guide pole 22, second and load lever 13, first hinge, 3, the second afterburning guide pole 4, the first liner anchor clamps 11, the first fibrage compound self-lubricating liner 12, outer spheroid 35, rotating shaft 37, the second fibrage compound self-lubricating liner 15, the second liner anchor clamps, the 17 common loading systems that constitute a sealing.When the rodless cavity (the left chamber of loading hydraulic cylinder 23) of giving loading hydraulic cylinder 23 feeds hydraulic oil, the piston rod of loading hydraulic cylinder 23 promotes the second afterburning guide pole 4 by first hinge 3, the first liner anchor clamps 11, the first fibrage compound self-lubricating liner 12, outer spheroid 35, rotating shaft 37 moves right, meanwhile, the cylinder body of loading hydraulic cylinder 23 promotes first by second hinge 24 and loads lever 1, the first afterburning guide pole 2, the 3rd afterburning guide pole 22, second loads lever 13, the second liner anchor clamps 17, the second fibrage compound self-lubricating liner 15, outer spheroid 35, rotating shaft 37 is to left movement, because the thrust of loading hydraulic cylinder 23 piston rods equates with loading hydraulic cylinder 23 cylinder body thrusts, and rotating shaft 37 is subjected to the restriction of the clutch shaft bearing 25 and second bearing 27, so two thrusts seal in rotating shaft 37, promptly the pressure between the first fibrage compound self-lubricating liner 12 and the outer spheroid 35 and the second fibrage compound self-lubricating liner 15 equate (to ignore the first afterburning guide pole 2 with pressure between the outer spheroid 35, the fine difference of suffered friction force on the 3rd afterburning guide pole 22 and the second afterburning guide pole 4).
The pressure of the hydraulic oil of the rodless cavity (the left chamber of loading hydraulic cylinder 23) of feeding loading hydraulic cylinder 23 is adjustable, promptly can simulate the various load industrial and mineral conditions of fibrage compound self-lubricating liner by the control of hydraulic system.
The actual industrial and mineral condition more complicated of fibrage compound self-lubricating liner: may under normal temperature condition, work, may work under the condition of higher in temperature (260 ℃), also may under ultralow temperature (70 ℃) condition, work.Desire is estimated accurately to the performance of fibrage compound self-lubricating liner, must be able to simulate the true industrial and mineral of fibrage compound self-lubricating liner, promptly at first must can simulate the industrial and mineral condition of high low temperature.When needs simulation low temperature or overtemperature industrial and mineral condition, open stop valve 8, the liquid nitrogen of 40 li in liquid nitrogen jar is entered in the airtight casing 14 by pipeline 41, with the temperature in the airtight casing 14 of temperature sensor 39 detections, by regulating the openings of sizes of stop valve 8, control flows into the flow of the liquid nitrogen in the airtight casing 14, when reaching design temperature, closes stop valve 8.
When needs simulation high temperature industrial and mineral condition, close stop valve 8, and well heater 16 is got, by control be input to the electric current of well heater 16, the size of voltage is controlled the speed of temperature rise, with the temperature variations in the airtight casing 14 of temperature sensor 39 detections, when reaching temperature required, make well heater 16 outages.
The first fibrage compound self-lubricating liner 12, the second fibrage compound self-lubricating liner 15 can be the manufacturings of same material, same process, also can be the manufacturings of same material, different process, can also be the manufacturings of different materials, different process.
When the first fibrage compound self-lubricating liner 12 is identical with the material of the second fibrage compound self-lubricating liner 15, but manufacturing process is not simultaneously, can compare between the two difference fatigue lifetime by test.After the above-mentioned comparison test of fibrage compound self-lubricating liner process that various technologies produce, but with regard to the optimum manufacturing process under optimization industrial and mineral condition, the identical condition of manufactured materials.
Different with the material of the second fibrage compound self-lubricating liner 15 when the first fibrage compound self-lubricating liner 12, but manufacturing process is when identical, can compare between the two difference fatigue lifetime by test.After the above-mentioned comparison test of fibrage compound self-lubricating liner process that various materials, same process produce, but with regard to the optimum manufactured materials under optimization industrial and mineral condition, the identical condition of manufacturing process.
Claims (7)
1. slow-speed heavy-load fibrage composite self-lubricating bearing strip performance test machine, it is characterized in that: in the clutch shaft bearing (25) on airtight casing (14) box body wall and the interior ring of second bearing (27) rotating shaft (37) is installed, seals with the 4th seal (26) and the 5th seal (36) between rotating shaft (37) and the airtight casing (14); Connect firmly an outer spheroid (35) that has endoporus at the middle part of rotating shaft (37), what match with outer spheroid (35) is the first fibrage compound self-lubricating liner (12) and the second fibrage compound self-lubricating liner (15), the axle head of rotating shaft (37) is connected with torque gauge (29) by shaft coupling (28), torque gauge (29) is connected with speed reduction unit (31) by shaft coupling (30), and speed reduction unit (31) is connected with the output shaft of servomotor (33) by shaft coupling (32).
2. slow-speed heavy-load fibrage composite self-lubricating bearing strip performance test machine according to claim 1, it is characterized in that: the first liner anchor clamps (11) and the second liner anchor clamps (17) are installed in the left-right symmetric of the first fibrage compound self-lubricating liner (12) and the second fibrage compound self-lubricating liner (15), the first liner anchor clamps (11) and the second liner anchor clamps (17) all have an Internal Spherical Surface that matches with the liner spherical outside surface, adopt resin bonding between the first fibrage compound self-lubricating liner (12) and the second fibrage compound self-lubricating liner (15) and the first liner anchor clamps (11) and the second liner anchor clamps (17).
3. slow-speed heavy-load fibrage composite self-lubricating bearing strip performance test machine according to claim 2, it is characterized in that: the first liner anchor clamps (11) connect firmly with the second afterburning guide pole (4), the second liner anchor clamps (17) and second load lever (13) and connect firmly, connecting firmly the first afterburning guide pole (2) and the 3rd afterburning guide pole (22) on the second loading lever (13), the left end of the first afterburning guide pole (2) and the 3rd afterburning guide pole (22) connects firmly first and loads lever (1), first load lever (1) and and the second afterburning guide pole (4) between loading hydraulic cylinder (23) is housed.
4. slow-speed heavy-load fibrage composite self-lubricating bearing strip performance test machine according to claim 3, it is characterized in that: the left side of the second afterburning guide pole (4) links to each other with the piston rod of loading hydraulic cylinder (23) by first hinge (3), the cylinder body of loading hydraulic cylinder (23) loads lever (1) by second hinge (24) and first and links to each other
5. slow-speed heavy-load fibrage composite self-lubricating bearing strip performance test machine according to claim 4, it is characterized in that: connect firmly displacement transducer holder (20) in the left side of the second afterburning guide pole (4), go up installation folder displacement transducer (21) at displacement transducer holder (20), displacement transducer (21) forms with the second afterburning guide pole (4) by displacement transducer holder (20) and removably connects, and the measuring head of displacement transducer (21) withstands on first and loads on the right side of lever (1).
6. slow-speed heavy-load fibrage composite self-lubricating bearing strip performance test machine according to claim 1, it is characterized in that: a liquid nitrogen path (9) is arranged on the top box body wall of airtight casing (14), stop valve (8) is installed in the outside of liquid nitrogen path (9), and stop valve (8) links to each other with liquid nitrogen jar (40) by pipeline (41).
7. slow-speed heavy-load fibrage composite self-lubricating bearing strip performance test machine according to claim 1 is characterized in that: a well heater (16) and a temperature sensor (39) are set in the inside of airtight casing (14).
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2008100795520A CN101363787A (en) | 2008-10-08 | 2008-10-08 | Slow-speed heavy-load fibrage composite self-lubricating bearing strip performance test machine |
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| CNA2008100795520A CN101363787A (en) | 2008-10-08 | 2008-10-08 | Slow-speed heavy-load fibrage composite self-lubricating bearing strip performance test machine |
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| CNA2008100795520A Pending CN101363787A (en) | 2008-10-08 | 2008-10-08 | Slow-speed heavy-load fibrage composite self-lubricating bearing strip performance test machine |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102156096A (en) * | 2011-04-07 | 2011-08-17 | 河南科技大学 | Test stand for detecting friction performance of self-lubricating oscillating bearing liner |
| CN102230862A (en) * | 2011-04-07 | 2011-11-02 | 河南科技大学 | Friction pair of test stand for detecting friction performance of self-lubricating joint bearing gasket |
| CN103162953A (en) * | 2013-02-27 | 2013-06-19 | 燕山大学 | Self-lubricating liner performance testing machine |
| CN103969182A (en) * | 2014-05-06 | 2014-08-06 | 上海工程技术大学 | Method and system for detecting liner cementing quality of self-lubricating joint bearing |
| CN104215458A (en) * | 2014-08-26 | 2014-12-17 | 中国直升机设计研究所 | Helicopter tail rotor supporting bearing fatigue test device |
| CN104568632A (en) * | 2015-01-22 | 2015-04-29 | 清华大学 | Device for testing abrasion of fibre to hard material |
| CZ306656B6 (en) * | 2016-03-31 | 2017-04-19 | Ĺ KODA AUTO a.s. | A device for error diagnosis of low-speed bearings |
| CN107132180A (en) * | 2017-04-07 | 2017-09-05 | 河南科技大学 | The frictional behaviour detection experimental rig and its installation method of a kind of oscillating bearing pad |
| CN107525675A (en) * | 2017-08-07 | 2017-12-29 | 湖南崇德工业科技有限公司 | Horizontal sliding bearing hydraulic system |
| CN107560932A (en) * | 2017-10-12 | 2018-01-09 | 燕山大学 | Double-conical-surface axle sleeve type self-lubricating oscillating bearing liner frictional wear test device |
| CN107931345A (en) * | 2017-11-16 | 2018-04-20 | 燕山大学 | A kind of horizontal contoured squeeze machine repeatedly |
| CN108387475A (en) * | 2018-05-11 | 2018-08-10 | 吉林大学 | A kind of swing fatigue under scrubbing testing machine |
| CN108414360A (en) * | 2018-01-18 | 2018-08-17 | 中国人民解放军陆军装甲兵学院 | Simulate Deep-sea high voltage corrosion fatigue three point bending test device |
| CN111912730A (en) * | 2020-07-15 | 2020-11-10 | 扬州市舜意机械有限公司 | Wear testing machine for self-lubricating gasket of joint bearing |
| CN112798236A (en) * | 2019-10-28 | 2021-05-14 | 南通深南电路有限公司 | Clamp test system and clamp test method |
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| CN102230862A (en) * | 2011-04-07 | 2011-11-02 | 河南科技大学 | Friction pair of test stand for detecting friction performance of self-lubricating joint bearing gasket |
| CN102156096B (en) * | 2011-04-07 | 2013-02-27 | 河南科技大学 | Test stand for detecting friction performance of self-lubricating oscillating bearing liner |
| CN102156096A (en) * | 2011-04-07 | 2011-08-17 | 河南科技大学 | Test stand for detecting friction performance of self-lubricating oscillating bearing liner |
| CN103162953A (en) * | 2013-02-27 | 2013-06-19 | 燕山大学 | Self-lubricating liner performance testing machine |
| CN103162953B (en) * | 2013-02-27 | 2015-08-05 | 燕山大学 | A kind of selflubricating liner performance aircraft |
| CN103969182A (en) * | 2014-05-06 | 2014-08-06 | 上海工程技术大学 | Method and system for detecting liner cementing quality of self-lubricating joint bearing |
| CN103969182B (en) * | 2014-05-06 | 2016-08-24 | 上海工程技术大学 | A kind of self-lubricating oscillating bearing liner bond quality detection method and system |
| CN104215458B (en) * | 2014-08-26 | 2017-06-23 | 中国直升机设计研究所 | A kind of helicopter tail rotor spring bearing fatigue experimental device |
| CN104215458A (en) * | 2014-08-26 | 2014-12-17 | 中国直升机设计研究所 | Helicopter tail rotor supporting bearing fatigue test device |
| CN104568632A (en) * | 2015-01-22 | 2015-04-29 | 清华大学 | Device for testing abrasion of fibre to hard material |
| CN104568632B (en) * | 2015-01-22 | 2017-04-19 | 清华大学 | Device for testing abrasion of fibre to hard material |
| CZ306656B6 (en) * | 2016-03-31 | 2017-04-19 | Ĺ KODA AUTO a.s. | A device for error diagnosis of low-speed bearings |
| CN107132180A (en) * | 2017-04-07 | 2017-09-05 | 河南科技大学 | The frictional behaviour detection experimental rig and its installation method of a kind of oscillating bearing pad |
| CN107525675A (en) * | 2017-08-07 | 2017-12-29 | 湖南崇德工业科技有限公司 | Horizontal sliding bearing hydraulic system |
| CN107560932A (en) * | 2017-10-12 | 2018-01-09 | 燕山大学 | Double-conical-surface axle sleeve type self-lubricating oscillating bearing liner frictional wear test device |
| CN107560932B (en) * | 2017-10-12 | 2019-07-26 | 燕山大学 | Double-conical-surface axle sleeve type self-lubricating oscillating bearing liner frictional wear test device |
| CN107931345A (en) * | 2017-11-16 | 2018-04-20 | 燕山大学 | A kind of horizontal contoured squeeze machine repeatedly |
| CN107931345B (en) * | 2017-11-16 | 2019-08-23 | 燕山大学 | A kind of horizontal contoured squeeze machine repeatedly |
| CN108414360A (en) * | 2018-01-18 | 2018-08-17 | 中国人民解放军陆军装甲兵学院 | Simulate Deep-sea high voltage corrosion fatigue three point bending test device |
| CN108387475A (en) * | 2018-05-11 | 2018-08-10 | 吉林大学 | A kind of swing fatigue under scrubbing testing machine |
| CN108387475B (en) * | 2018-05-11 | 2024-05-28 | 吉林大学 | Swing friction fatigue testing machine |
| CN112798236A (en) * | 2019-10-28 | 2021-05-14 | 南通深南电路有限公司 | Clamp test system and clamp test method |
| CN111912730A (en) * | 2020-07-15 | 2020-11-10 | 扬州市舜意机械有限公司 | Wear testing machine for self-lubricating gasket of joint bearing |
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