CN201206974Y - High-pressure microgap lubricating test machine - Google Patents
High-pressure microgap lubricating test machine Download PDFInfo
- Publication number
- CN201206974Y CN201206974Y CNU2008200367932U CN200820036793U CN201206974Y CN 201206974 Y CN201206974 Y CN 201206974Y CN U2008200367932 U CNU2008200367932 U CN U2008200367932U CN 200820036793 U CN200820036793 U CN 200820036793U CN 201206974 Y CN201206974 Y CN 201206974Y
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- Prior art keywords
- ceramic
- fuel tank
- shaft
- test machine
- pressure micro
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Abstract
Disclosed is a high-pressure microgap lubrication tester, comprising a support platform and a lifting workbench. An oil tank is arranged on the lifting workbench and a T-shaped principal shaft is inserted in the oil tank. A ceramic sleeve is arranged on the external path of the head of the principal shaft and a ceramic ball is arranged on the right side of the outer path of the ceramic sleeve, close to the circumferential surface of the ceramic sleeve. A high-precision eddy current sensor is arranged below the ceramic ball to sense the clearance between the ceramic ball and the ceramic sleeve. A loading device is arranged at the right side of the ceramic ball, and a ceramic shaft is fixed on the ceramic ball. The ceramic shaft is fixed through a precise two-row self-aligning ball bearing and is connected with a flexible shaft which is connected with a torque sensor. The torque sensor is connected with a servo motor and is arranged on the support platform. The tail of the principal shaft is connected through a shaft coupling with the servo motor arranged on the support platform. The bearing capacity and the rheological property of the material can be estimated by controlling the maximum contact pressure, the clearance between the interfaces and the shear rate between the ceramic ball and the ceramic sleeve, thus providing experiment data for the establishment of a lubrication model under microgap and providing a solution for the selection of lubricating wear-resistant material.
Description
Technical field
The utility model relates to a kind of heavy pressure micro-gap lubrication test machine, and is promptly a kind of in 0-3GPa high pressure and 10
8-10
9Under/s high shear rate the working condition, realize measuring in real time the testing machine of lubrication film thickness, friction force, temperature in the 1-100nm microclearance.
Background technology
In fields such as space flight and aviation, ultraprecise machinery, the kinematic accuracy of many critical components and manufacturing accuracy need reach sub-micron even nanometer scale, and follow high load capacity point, line contact; Corresponding friction pair gap will reach the 1-100nm nanometer scale, and pressure reaches 3GPa, and shearing rate reaches 10
8-10
10/ s.Lubricant behavior and inefficacy rule thereof in the microclearance have not met macroscopical lubrication theory; High shear rate can cause the lubricant molecular chain rupture; High pressure can cause lubricating oil breakdown.These behaviors all can cause friction lubricating lost efficacy, and will cause the total system paralysis when serious.Therefore, set up the heavy pressure micro-gap lubrication test system, behavior rule, scale effect, inefficacy mechanism and control method to lubricant in high pressure, high shear rate, the microclearance are explored, and are very significant to stability, reliability and the economy of safeguards system.
The pilot system of now behaviors such as lubricant being studied mainly contains: lubricating property monitoring system, lubricant properties monitoring system, surface lubrication system.Lubricating property monitoring system aspect: the patent No. is 200410018436 to disclose the proving installation of the secondary lubricating property of a kind of axial plunger pump flow, implement to load by hydraulic power, come the lubricating property of flow pair under the different operating modes of experimental study with the lubricating film test platform, monitoring in real time, gather and, realize the FEEDBACK CONTROL of micron order lubrication film thickness in the lubrication test system test data analysis, processing.The patent No. is 89217503 to disclose a kind of intelligent lubricating supervising device, is used for the programmed control of the fault monitoring of drier oil, oil lubricating system and control, machine.The patent No. is 97219302 to disclose a kind of flow of lubricant watch-dog, is fit to the lubricated monitoring of large-scale machinery and equipment such as mine, metallurgy, generating; Whether the patent No. is 200610019934 to disclose a kind of method of monitoring operation state of compressor link bushing, by the microcomputer monitoring operation state of compressor link bushing, need repairing by the data processing decision.Lubricant properties monitoring system aspect: the patent No. is 200620088031.8 to disclose a kind of rubbing wear lubricant test machine that adopts the industrial computer Automatic Control, can observe lubricant friction and wear behavior test findings in real time, and can compare research the test of many times data; The patent No. is 94224975.5 to disclose a kind of four ball formula lubricant test machines, can measure the testing machine of wear-resistant, antifriction, antifraying property and the anti-mechanical shearing stability of lubricant, with the smart instrumentation coupling, can satisfy the evaluation of the multiple performance of lubricant, the patent No. is that CN03227041.0 discloses a kind of hydraulic jack formula lubricated sliding wear testing machine, adopt the hydraulic pressure application of force, measure lubricated sliding wear degree of accuracy height, working stability; The surface lubrication system aspects: the patent No. is 96191699 to disclose a kind of rotary compressor with reduced lubrication sensitivity, applies adamas formula carbon coating on the part that lubrication failure is worn and alleviates greasy property; The patent No. is 200520012678 to disclose a kind of universal joint lubricating structure, is used for universal joint, and it is convenient that this mechanism has bigger oil reserve oiling, and can make universal joint have higher characteristics such as reliability.
Disclosed lubrication test mechanism in the above-mentioned patent documentation, though all to the friction and wear behavior of lubricant and lubricating property is monitored in real time and timely FEEDBACK CONTROL, or by surface treatment enhancing greasy property, but the lubricant of being studied all is the lubricating property under the general condition and the monitoring and the research of friction and wear behavior, and the lubricant load-bearing capacity under high pressure, high shear rate and microclearance working condition, rheological characteristics etc. are studied as yet.
The utility model content
Technical matters: the purpose of this utility model is according to the problem that exists in the prior art, and a kind of heavy pressure micro-gap lubrication test machine is provided, to explore lubricant load-bearing capacity and rheological characteristics under the pressure micro-gap condition.
Technical scheme: heavy pressure micro-gap lubrication test machine of the present utility model, it is made of brace table and the test unit that is located on the brace table, and brace table is formed by connecting by base, support bar and support platform; Test unit comprises the self-powered platform that is located on the base, self-powered platform is provided with fuel tank, be inserted with T-shaped main shaft in the fuel tank, on the spindle nose external diameter ceramic jacket is housed, the ceramic jacket right side is provided with the Ceramic Balls near its periphery, and Ceramic Balls below is provided with the high precision current vortex sensor in induction itself and ceramic jacket gap, the right side of Ceramic Balls is provided with charger, the front portion of charger is located in the fuel tank, and the rear portion extends to outside the fuel tank, is supported on the support; The Ceramic Balls that is bonded with ceramic shaft is provided with the flexible axle that links to each other with torque sensor, and ceramic shaft is by accurate double-row self-aligning bearing supporting and aligning, and torque sensor links to each other with servomotor and is located on the support platform; The main shaft afterbody that stretches out fuel tank cap links by shaft coupling and the servomotor that is located on the support platform; Support platform is provided with intelligent temperature controller and bidirectional triode thyristor.
Described main shaft is provided with the fixedly block plate of ceramic jacket; Described high precision current vortex sensor is located in the insulation crust that is fixed on the supporting taper bearing; Described charger is by the electricity driving displacement platform, and the holder that is located at load plate, supporting taper bearing and the supporting taper bearing of electricity driving displacement platform front portion constitutes, and the conical surface of supporting taper bearing is provided with the ceramic bearing that withstands Ceramic Balls; Described charger is provided with piezoelectric transducer; Be provided with thermocouple thermometer and heating plate in the described fuel tank; Described main shaft afterbody and shaft coupling linkage section outside are provided with cup-shaped housing; Be provided with rolling bearing between described main shaft afterbody and the cup-shaped housing; Establish fuel tank cap on the described fuel tank, cover to be provided with and insert the interior oiling of fuel tank or the oil pipe of oil pumping.
Beneficial effect: heavy pressure micro-gap lubrication test machine of the present utility model, by the control Ceramic Balls and be enclosed within maximum contact pressure, interfacial gap, shearing rate between ceramic jacket on the main shaft, can estimate the load-bearing capacity of lubricant under pressure micro-gap, rheological characteristics etc., can provide experimental data for the foundation of lubrication model under the microclearance, for the lubricated wear-resistant and material under the pressure micro-gap lubricating condition selects to provide solution.
Description of drawings
Accompanying drawing is a heavy pressure micro-gap lubrication test machine structural drawing of the present utility model;
Among the figure: servomotor-1, torque sensor-2, support platform-3, flexible axle-4, oil pipe-5, Ceramic Balls-6, taper bearing-7, holder-8, piezoelectric transducer-9, load plate-10, electricity driving displacement platform-11, support-12, insulation crust-13, high precision eddy current displacement sensor-14, base-15, self-powered platform-16, heating plate-17, block plate-18, fuel tank-19, screw-20, ceramic jacket-21, gland bonnet-22, main shaft-23, thermocouple thermometer-24, housing-25, shaft coupling-26, intelligent temperature controller-27, servomotor-28, bidirectional triode thyristor-29.
Embodiment
The utility model will be further described below in conjunction with the embodiment in the accompanying drawing:
Shown in the accompanying drawing, heavy pressure micro-gap lubrication test machine mainly is made of brace table and the test unit that is located on the brace table, brace table is formed by connecting by base 15, support platform 3, support platform 12 and support bar therebetween, test unit comprises the self-powered platform 16 that is fixed on the base 15, lay fuel tank 19 on the self-powered platform 16, be inserted with T-shaped main shaft 23 in the fuel tank 19, on main shaft 23 head outer diameter ceramic jacket 21 be housed, ceramic jacket 21 adopts the SiC pottery.The end face of main shaft 23 is equipped with the block plate of being fixed by screw 20 18, SiC ceramic jacket 21 right sides are provided with the Ceramic Balls 6 near its periphery, Ceramic Balls 6 belows are provided with the high precision current vortex sensor 14 in itself and ceramic jacket 21 gaps of induction, high precision current vortex sensor 14 is located in the shell 13, is fixed on the taper bearing 7.Ceramic Balls 6 adopts Si
3N
4Pottery, Si
3N
4The right side of Ceramic Balls 6 is provided with charger, the front portion of charger is located in the fuel tank 19, the rear portion extends to outside the fuel tank 19, be supported on the support 12, establish fuel tank cap 22 on the fuel tank 19, by flat sealant sealing, fuel tank cap 22 is provided with the oiling of inserting in the fuel tank 19 or the oil pipe 5 of oil pumping between fuel tank cap 22 and the fuel tank 19.The bottom of fuel tank 19 is provided with heating plate 17, and the gland bonnet 22 of fuel tank is provided with thermocouple thermometer 24, and support platform 3 is provided with intelligent temperature controller 27 and bidirectional triode thyristor 29.Charger is by electricity driving displacement platform 11, the holder 8 that is located at load plate 10, supporting taper bearing 7 and the supporting taper bearing 7 of electricity driving displacement platform 11 front portions constitutes, on electricity driving displacement platform 11, the conical surface of supporting taper bearing 7 is provided with and withstands Si load plate 10 by screw retention
3N
4The ceramic bearing of Ceramic Balls 6, charger are provided with pressure transducer 9.Be bonded with the Si of ceramic shaft
3N
4The tip position of Ceramic Balls 6 is provided with the flexible axle 4 that links to each other with torque sensor 2, and ceramic shaft is by accurate double-row self-aligning ball bearing supporting of high-quality and aligning, and torque sensor 2 links to each other with servomotor 1 and is located on the support platform 3; Servomotor 28 is erected on the support platform 3, shaft coupling 26 links up servomotor 28 output shafts and main shaft 23 afterbodys that stretch out fuel tank cap 22, SiC ceramic jacket 21 is for being installed in the SiC ceramic jacket on main shaft 23 output shafts, its outer surface the latter half is coated with induction medium copper, cup-shaped housing 25 by screw retention between support platform 3 and fuel tank cap 22; Be provided with rolling bearing between main shaft 23 afterbodys and the cup-shaped housing 25.
In experiment, the fluid in the fuel tank by annotate (taking out) but oil pipe 5 go into, extract via the rotating infusion, self-powered platform 16 reaches the purpose of injecting part fluid and cleaning fuel tank by regulating the rise and fall that highly realize fuel tank 19; The servomotor 28 of axis system is directly passed to main shaft 23 by shaft coupling 26 with power, SiC ceramic jacket 21 is made high speed rotating with main shaft 23, when the electricity driving displacement platform 11 of loading system is done feed motion, successively by load plate 10, piezoelectric transducer 9, supporting taper bearing 7 output shafts, and then to the Si on the supporting taper bearing 7
3N
4Ceramic Balls 6 is executed pre-tension, and the size that applies of pre-tension is measured by piezoelectric transducer 9; At this moment, Si
3N
4Ceramic Balls 6 and SiC ceramic jacket 21 are immersed in the fuel tank fluid, Si
3N
4Ceramic Balls 6 contacts with SiC ceramic jacket 21 under the pre-tension effect, and the fluid that the high speed rotating of SiC ceramic jacket 21 is thrown away is at Si
3N
421 formation of Ceramic Balls 6-SiC ceramic jacket can be born the microclearance lubricating film of high pressure and high shear rate, make Si
3N
4Ceramic Balls 6 produces relative displacement, its relative displacement size is measured by the high precision eddy current displacement sensor 14 that can work in fluid, it produces eddy current effect to the copper medium of SiC ceramic jacket 21 bottoms and finishes the measurement of thickness, ceramic shaft is done the skew of microclearance with Ceramic Balls 6, and by the accurate double-row self-aligning ball bearing of high-quality aligning; In addition, the appearance of lubricating film, Si
3N
421 of Ceramic Balls 6-SiC ceramic jackets produce force of rolling friction, and force of rolling friction is indirectly by measuring Si
3N
4Ceramic Balls 6 moments of torsion are realized, Si
3N
4Ceramic Balls 6 rotatablely moves Si in opposite directions with SiC ceramic jacket 21
3N
4The moment of torsion that Ceramic Balls 6 rotations produce is delivered on the torque sensor 2 by flexible axle 4, obtains Si
3N
4The torque value of Ceramic Balls 6, and then theory is obtained Si
3N
4The force of rolling friction that Ceramic Balls 6-SiC ceramic jacket is 21; Temperature control system then is to control in real time temperature, change output signal voltage by thermocouple thermometer 24 temperature sensors and be transferred to intelligent temperature controller 27, the voltage signal that departs from is regulated by PID, temperature is below or above setting value, bidirectional triode thyristor 29 0 triggering and conducting, drive controlling element heating plate 17 carries out feedback compensation, and experiment is carried out under the temperature of setting.
Claims (9)
1. heavy pressure micro-gap lubrication test machine is characterized in that: it is made of brace table and the test unit that is located on the brace table, and brace table is formed by connecting by base (15), support bar, support platform (3) and support platform (12); Test unit comprises the self-powered platform (16) that is located on the base (15), self-powered platform (16) is provided with fuel tank (19), be inserted with T-shaped main shaft (23) in the fuel tank (19), on main shaft (23) head outer diameter ceramic jacket (21) is housed, ceramic jacket (21) right side is provided with the Ceramic Balls (6) near its periphery, Ceramic Balls (6) below is provided with the high precision current vortex sensor (14) in induction itself and ceramic jacket (21) gap, the right side of Ceramic Balls (6) is provided with charger, the front portion of charger is located in the fuel tank (19), the rear portion extends to outside the fuel tank (19), is supported on the support (12); Be fixed with on the Ceramic Balls (6) of ceramic shaft and be made as the flexible axle (4) that links to each other with torque sensor (2), torque sensor (2) links to each other with servomotor (1) and is located on the support platform (3); Main shaft (23) afterbody that stretches out fuel tank cap (22) links by shaft coupling (26) and the servomotor (28) that is located on the support platform (3); Support platform (3) is provided with intelligent temperature controller (27) and bidirectional triode thyristor (29).
2. heavy pressure micro-gap lubrication test machine according to claim 1 is characterized in that: described main shaft (23) is provided with the fixedly block plate (18) of ceramic jacket (21).
3. heavy pressure micro-gap lubrication test machine according to claim 1 is characterized in that: described high precision current vortex sensor (14) is located in the shell (13) that is fixed on the supporting taper bearing (7).
4. heavy pressure micro-gap lubrication test machine according to claim 1, it is characterized in that: described charger is by electricity driving displacement platform (11), the holder (8) that is located at the anterior load plate (10) of electricity driving displacement platform (11), taper bearing (7) and supporting taper bearing (7) constitutes, and the conical surface of taper bearing (7) is provided with the ceramic bearing that withstands Ceramic Balls (6).
5. according to claim 1 or 4 described heavy pressure micro-gap lubrication test machines, it is characterized in that: described charger is provided with piezoelectric transducer (9).
6. heavy pressure micro-gap lubrication test machine according to claim 1 is characterized in that: be provided with thermocouple thermometer (24) and heating plate (17) in the described fuel tank (19).
7. heavy pressure micro-gap lubrication test machine according to claim 1 is characterized in that: described main shaft (23) afterbody and shaft coupling (26) linkage section outside are provided with cup-shaped housing (25).
8. heavy pressure micro-gap lubrication test machine according to claim 1 is characterized in that: be provided with rolling bearing between described main shaft (23) afterbody and the cup-shaped housing (25).
9. heavy pressure micro-gap lubrication test machine according to claim 1 is characterized in that: establish fuel tank cap (22) on the described fuel tank (19), fuel tank cap (22) is provided with inserts the interior oiling of fuel tank (19) or the oil pipe (5) of oil pumping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200367932U CN201206974Y (en) | 2008-05-23 | 2008-05-23 | High-pressure microgap lubricating test machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200367932U CN201206974Y (en) | 2008-05-23 | 2008-05-23 | High-pressure microgap lubricating test machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201206974Y true CN201206974Y (en) | 2009-03-11 |
Family
ID=40466035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200367932U Expired - Fee Related CN201206974Y (en) | 2008-05-23 | 2008-05-23 | High-pressure microgap lubricating test machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201206974Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103728075A (en) * | 2014-01-07 | 2014-04-16 | 四川大学 | Tester for elastohydrodynamic lubricating oil film traction with spinning |
| CN114166676A (en) * | 2021-12-03 | 2022-03-11 | 中南大学 | Hydraulic pump flow distribution pair friction and wear testing device with online monitoring function |
-
2008
- 2008-05-23 CN CNU2008200367932U patent/CN201206974Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103728075A (en) * | 2014-01-07 | 2014-04-16 | 四川大学 | Tester for elastohydrodynamic lubricating oil film traction with spinning |
| CN114166676A (en) * | 2021-12-03 | 2022-03-11 | 中南大学 | Hydraulic pump flow distribution pair friction and wear testing device with online monitoring function |
| CN114166676B (en) * | 2021-12-03 | 2024-01-30 | 中南大学 | Hydraulic pump flow distribution pair friction and wear testing device with online monitoring function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090311 Termination date: 20100523 |