CN1715869A - Work condition analogue rolling contact fatigue tester - Google Patents
Work condition analogue rolling contact fatigue tester Download PDFInfo
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- CN1715869A CN1715869A CN 200510012674 CN200510012674A CN1715869A CN 1715869 A CN1715869 A CN 1715869A CN 200510012674 CN200510012674 CN 200510012674 CN 200510012674 A CN200510012674 A CN 200510012674A CN 1715869 A CN1715869 A CN 1715869A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/56—Investigating resistance to wear or abrasion
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/0202—Control of the test
- G01N2203/0204—Safety arrangements, e.g. remote control, emergency stop
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/0244—Tests performed "in situ" or after "in situ" use
- G01N2203/0246—Special simulation of "in situ" conditions, scale models or dummies
Abstract
The on-line work condition simulating rolling contact fatigue tester includes driving device, loading device, testing device and signal collecting device, and has temperature controlling cavity sleeved on the driving shaft, lower test cavity end interference fitted to the end of the driving shaft and set inside the temperature controlling cavity, test cavity with upper test sample, rolling part, lower test sample, abruptly stopping cam on the upper test sample, and rolling pin thrust bearing on the abruptly stopping cam and matching the pressure block below the loading lever. The present invention can simulate the contact fatigue, friction and wear process of friction pair with or without surface coating for relevant detection, and the instantaneous failure state may be kept by means of abrupt stopping unit.
Description
Technical field
The present invention relates to a kind of contact fatigue friction wear testing machine, particularly a kind of simulation actual condition also can online detection contact fatigue friction wear testing machine.
Background technology
Mantle friction state of wear, contact fatigue life are one of main means of estimating coating process quality, coating material surface property.At present, also do not have a kind ofly complete can simulate the contact fatigue friction wear testing machine that actual condition carries out coating material rubbing wear state and detects fatigue lifetime.
The coating adhesion measuring instrument that U.S. Fang Qun company makes, though can carry out the coating adhesion under standard microcosmic condition measures, but the expression behaviour of contact region coating material has very big difference under coating material performance that local microscopic measurement obtains and the actual condition, is difficult to satisfy engineering and uses the assessment requirement.
" roll with friction combined testing machine " (Chinese patent 03151240.2) is disclosed is a kind of rolling and sliding friction combined testing machine of variable-ratio, and its principal feature is to have the composite testing function.But this testing machine can only be used for the friction test under normal temperature, routine, the oil-free environment." bearing ball rolling contact fatigue life testing machine " (Chinese patent 03230586.9) is disclosed to be a kind of bearing spheroid contact fatigue test machine that is exclusively used in.The contact fatigue that this testing machine is differentiated the test bearing spheroid by the variation of monitoring amplitude parameter lost efficacy.Above-mentioned two kinds of testing machines all do not have the function of the tired fine fisssure inefficacy of surface of friction pair, scuffing failure and wear out failure momentary status in the capture assay process; There are not functions such as simulation actual condition lubricating status, working temperature, operating loading.
Summary of the invention
Use the requirement of surface coating parts with frication pair usability accurate assessment in order to satisfy engineering, the invention provides a kind of Work condition analogue rolling contact fatigue tester, by multi parameters control such as load, rotating speed, temperature, lubricated form, contact condition are simulated actual condition.The present invention not only detects surface coating or the online instantaneous rolling contact fatigue process of friction and wear of non-coating surface of friction pair, and carries out urgency and stop protecting instantaneous contact fatigue state when finding crackle generation, fatigue failure, scuffing failure; Can detect evaluation and can realize quick fatigue wear test process for surface coating, lubricating oil and grease lubrication effect, shorten the torture test time; Can also serviceable life, limit speed, load-bearing capacity and the raceway face coating process of thrust bearing be detected and evaluate.
The technical solution adopted for the present invention to solve the technical problems is: this Work condition analogue rolling contact fatigue tester, formation comprise test unit, loading, driving analysis of oil and lubricated and signals collecting each several part, wherein:
Test unit part by test cavity, temperature control chamber, suddenly stop cam, go up test specimen, rolling body, test specimen and pressure block constitute down, the temperature control chamber is sleeved on the transmission shaft, the end interference fit of the lower end of test cavity and transmission shaft, and place among the temperature control chamber, following test specimen is assemblied in the test cavity, last test specimen is assemblied in anxious stopping on the stepped boss of cam, be up and down rolling body between the test specimen, and the upper surface of suddenly stopping cam is equipped with bearing and is matched with the pressure block of loading lever bottom;
Loading section is made of pressure block, loading lever, counterweight charger, loads lever one end and is connected with stand hinge, and the other end is installed the counterweight charger, loads the lever bottom pressure block is housed, and there is oil supply hole at the center of pressure block;
The variable-frequency motor of drive part is fixed on the side of support, and variable-frequency motor is in transmission connection by the small belt pulley on big belt pulley, belt and the transmission shaft;
Analysis of oil is made of flowmeter, pipeline, lubricated pumping plant and analysis of oil instrument with lubricated part, and lubricated pumping plant is connected with test cavity by pipeline, pressure block oil supply hole and the anxious oil supply hole that stops cam; The oil outlet of temperature control chamber is connected with lubricated pumping plant by pipeline and analysis of oil instrument;
The signals collecting part is made of torque sensor, temperature sensor, speed pickup, acceleration transducer, noise transducer, data adapter and computing machine, torque sensor is installed in the lower end of axle, torque transmitting shaft is fixed on the support by bearing seat, and gear and power clutch are installed in the torque transmitting shaft upper end; Gear is meshed with the anxious excircle gear teeth that stop cam; Temperature sensor places anxious stopping in the upper cam surface annular groove; Speed pickup is fixed on the pedestal, and the rotation process middle belt pulley passes to speed pickup with rotational speed pulse signal; Noise transducer is placed in temperature control chamber one side opening; Acceleration transducer is installed in the top that loads the lever loading end; Contact-making switch is fixed on and loads the lever side; The output signal of the sensor is input to computing machine by adapter and handles.
Above-mentioned Work condition analogue rolling contact fatigue tester, the excircle that said urgency is stopped cam is processed with the gear teeth, and there is cylindrical cam its upper surface, and annular groove is arranged around the cylindrical cam, center processing oil supply hole; There is stepped boss the lower surface of suddenly stopping cam, and stepped boss matches with last test specimen.
Around the above-mentioned Work condition analogue rolling contact fatigue tester, said test cavity cavity 3-5 oil outlet, cavity top being arranged is that test specimen is put into end, and the mating holes with following test specimen pilot hole and transmission shaft is arranged at the bottom.
Process an oil outlet and a through hole of placing noise transducer around the above-mentioned Work condition analogue rolling contact fatigue tester, said temperature control chamber cavity, portable well heater is installed in the outside of temperature control chamber cavity; Cavity top is the test specimen end of packing into, and the bottom is the transmission shaft mating holes, and is processed with seal groove at internal surface of hole.
Above-mentioned Work condition analogue rolling contact fatigue tester, also can adopt the hydraulic pressure imposed load, hydraulic cylinder is installed on the frame of support, the hydraulic pressurization piece is installed in the end of hydraulic cylinder piston rod, the upper surface of suddenly stopping cam is equipped with bearing and is matched with dress hydraulic pressurization piece, and the hydraulic pressurization piece is processed with the oil supply hole that oil-feed through hole and urgency stops cam and links.
The invention has the beneficial effects as follows: realize quick fatigue wear test by interpolation abrasive particle, minimizing bearing roller number, shorten the torture test time; Can directly coating material be deposited on the thrust bearing raceway face, also coating material can be deposited on the ring plate test specimen surface identical, its various coating material contact fatigue wearing and tearing are detected evaluation with the inside and outside circular diameter of thrust bearing; Adopt lever to load or effective control of hydraulic loaded and simulation actual condition load; Test macro carries out online accurate measurement and record to friction force, friction torque, temperature, rotating speed, vibration acceleration and variation thereof; Adopt anxious stop mechanism of cam and fault diagnosis system to germinate and surface failure by the inline diagnosis crizzle, and can carry out urgency in real time and stop, protect instantaneous surface in contact state; But the composition of on-line monitoring lubricating system lubricating oil changes, and can estimate lubricating oil, railway grease oil property parameter and tribology parameter.
Description of drawings
Fig. 1 is a lever loaded type contact fatigue friction wear testing machine structural representation
Fig. 2 is a lever loaded type contact fatigue friction wear testing machine structure left view
Fig. 3 is a hydraulic loaded formula contact fatigue friction wear testing machine structural representation
Fig. 4 is the anxious cam structure synoptic diagram that stops
Fig. 5 is the test cavity structural representation
Fig. 6 is a temperature control chamber structural representation
Fig. 7 is last test specimen structural representation
Fig. 8 is following test specimen structural representation
At Fig. 1, Fig. 2, among Fig. 3,1. support, 2. torque sensor, 3. torque transmitting shaft, 4. small belt pulley, 5. temperature control chamber, 6. oil outlet, 7. test cavity, 8. transmission shaft, 9. power clutch, 10. oil outlet, the 11. anxious cams that stop, 12. oil supply hole, 13. pressure blocks, 14. bearings, test specimen on 15., 16. rolling body, 17. times test specimens, 18. speed pickups, 19. belts, 20. big belt pulley, 21. variable-frequency motors, 22. flowmeters, 23. pipelines, 24. pipeline, 25. lubricated pumping plants, 26. analysis of oil instrument, 27. pipeline, 28. supports, 29. gear wheels, 30. noise transducer, 31. contact-making switches, 32. temperature sensors, 33. lever, 34. acceleration transducers, 35. counterweight chargers, 36. hydraulic cylinder, 37. oil inlet pipes, 38. scavenge pipes, 39. frame, 40. hydraulic pressurization pieces, 41. portable well heaters.
Embodiment
Fig. 1, Fig. 2 are embodiment disclosed by the invention (seeing Fig. 1, Fig. 2), before the experiment, is raceway or plane by testing requirements with the last test specimen 15 of required detection and the surface working of following test specimen 17, afterwards coating material is deposited on the surface of test specimen 15, rolling body 16 or following test specimen 17 with coating process equipment.Test specimen is put into test cavity 7, and starter motor 21 is adjusted rotating speed, loads then, starts lubricating and cooling 25 and signal pickup assembly.Big belt pulley 20 by adjustable frequency motor 21 drives small belt pulley 4 and transmission shaft 8 rotations by belt 19, and rate signal is passed to speed pickup 18, and rotate together in transmission shaft 8 motoring ring test chambeies 7, and rolling body 16 and following test specimen 17 rotate thereupon.According to testing requirements, with oil supply hole and anxious stop cam 11 center pits of lubricating oil by lubricating system 25, pipeline 23,24, pressure block 13, flow into test cavity 7, test specimen is lubricated or cools off the back under action of centrifugal force, by the lubricated pumping plant 25 of inflow behind test cavity oil outlet 10 inflow temperature control chambers 5 process oil outlets 6, pipeline 27 and the analysis of oil instrument 26.Portable well heater 41 is installed in the outside of temperature control chamber 5; Counterweight charger 35 amplifies the load that is applied by lever 33, stops cam 11 and is applied on the test specimen by pressure block 13, bearing 14, urgency.Vibration signal passes to vibration transducer 34 by lever 33 amplifications; Torque signal passes to torque sensor 2 by anxious all teeth and gear 29 engagements that stop cam 11 through torque transmitting shaft 3; Temperature signal stops around the cam 11 the oily medium in the groove and directly passes to temperature sensor 32 by anxious.Produce when lubricating oil film destroys in initial micro-crack or the rotation process on test specimen surface, because 15 friction force of rolling body 16 and last test specimen increase and drive the anxious cam 11 that stops and rotate and trigger contact-making switches 31 realization auto stops.Critical friction power is set by power clutch 9; The simultaneous faults diagnostic system is realized anxious stopping by Control Software design temperature signal, rate signal, vibration signal, noise signal and torque signal threshold values.
Fig. 3 is another embodiment (see figure 3) disclosed by the invention, fixedlys connected with frame 39 in hydraulic cylinder 36 upper ends, and hydraulic pressurization piece 40 is installed on the piston rod of hydraulic cylinder 36, and acceleration transducer 34 is threaded in anxious stopping on the cam 11 circular arc planes.Suddenly stop the interior laying temperature sensor 32 of groove of cam 11, cylindrical cam contacts with contact-making switch 31.Variable-frequency motor 21 drives big belt pulley 20 and drives small belt pulley 4 by belt 19, small belt pulley 4 drives transmission shaft 8 and rotates, transmission shaft 8 is fixed on support 26 by bearing and bearing spider, transmission shaft 8 upper ends connect test cavity 7 and drive test specimen 17 rotations down, and last test specimen 15 upper ends are the anxious cam 11 that stops, and suddenly stop cam 11 all teeth and gear 29 engagements, top contacts with pressure block 13 by bearing 14, hydraulic pressurization piece 40, transmission fluid cylinder pressure 36 is exerted pressure, and the pressure of hydraulic cylinder 36 is provided by hydraulic system.According to testing requirements, flow into test cavities 7 through hydraulic pressurization piece 40 and anxious cam 11 oil supply holes 12 that stop after lubricating oil mixed by pipeline 23,24 respectively by lubricated pumping plant 25, test specimen 15, rolling body 16, following test specimen 17 are gone up in lubricated or cooling, flow into temperature control chamber 5 and flow into lubricated pumping plant 25 by temperature control chamber oil outlet 6 after pipeline 27 is flowed through analysis of oil instrument 26 by test cavity 7 oil outlets 10 then.
Claims (5)
1. Work condition analogue rolling contact fatigue tester, its feature in: constitute and comprise test unit, loading, driving, analysis of oil and lubricate and the signals collecting each several part, wherein:
The test unit part is by test cavity (7), temperature control chamber (5), anxious cam (11) test specimen (15 that stops, 16,17) and pressure block (13) constitute, temperature control chamber (5) is sleeved on the transmission shaft (8), the end interference fit of the lower end of test cavity (7) and transmission shaft (8) also places among the temperature control chamber (5), place test specimen (15 in the test cavity (7), 16,17), the anxious cam (11) that stops is set on the last test specimen (15), and the upper surface of suddenly stopping cam (11) is equipped with bearing (14) and is matched with the pressure block (13) that loads lever (33) bottom;
Loading section is made of pressure block (13), loading lever (33), counterweight charger (35), loads lever (33) one ends and is connected with support (28) hinge, and the other end is installed counterweight charger (35), loads lever (33) bottom pressure block (13) is housed;
The variable-frequency motor of drive part (21) is fixed on the side of support (1), and variable-frequency motor (21) is in transmission connection by the small belt pulley (4) on big belt pulley (20), belt (19) and the axle (8);
Analysis of oil and lubricated part are by flowmeter (22), pipeline (23,24), lubricated pumping plant (25) and analysis of oil instrument (26) constitute, lubricated pumping plant (25) by pipeline (23,24), pressure block oil supply hole 12 and urgency stop cam (11) oil supply hole and test cavity (7) together with; Temperature control chamber (5) oil outlet (6) is connected with lubricated pumping plant (25) by pipeline (27) and analysis of oil instrument (26);
The signals collecting part is made of torque sensor (2), temperature sensor (32), speed pickup (18), acceleration transducer (32), noise transducer (30), data adapter and computing machine, torque sensor (2) is installed in the lower end of torque transmitting shaft (3), torque transmitting shaft (3) is fixed on the support (28) by bearing seat, gear (29) and power clutch (9) are installed in torque transmitting shaft (3) upper end, and gear (29) is meshed with anxious profile of tooth of stopping the excircle of cam (11); Temperature sensor (32) is placed on anxious stopping in the outer groove of cam (11) cylindrical cam; Place noise transducer (30) in temperature control chamber (5) one side openings; Acceleration transducer (34) is installed in the top that loads lever (33) loading end; Load fixedly contact-making switch (31) of side, lever (33) oil supply hole place, suddenly stop cam 11 upper surface cylindrical cams and contact with contact-making switch (31) contact; More than each road signal pass to Computer Processing by adapter.
2. Work condition analogue rolling contact fatigue tester according to claim 1, its feature in: the excircle that said urgency is stopped cam (11) is processed with profile of tooth, there is cylindrical cam its upper surface, fluted around the cylindrical cam, center processing oil supply hole, there is stepped boss the lower surface of suddenly stopping cam (11), and stepped boss matches with last test specimen (15).
3. Work condition analogue rolling contact fatigue tester according to claim 1 and 2, its feature has 3-5 oil outlet (10) around: said test cavity (7) cavity, cavity top is that test specimen is put into end, and the pilot hole of following test specimen (17) and the mating holes of transmission shaft (8) are arranged at the bottom.
4. Work condition analogue rolling contact fatigue tester according to claim 3, its feature is processed the through hole of an oil outlet (6) and a placement noise transducer around: said temperature control chamber (5) cavity, portable well heater (41) is installed in the outside of temperature control chamber (5) cavity; Cavity top is the test specimen end of packing into, and the bottom is transmission shaft (a 8) mating holes, and is processed with seal groove at internal surface of hole.
5. Work condition analogue rolling contact fatigue tester according to claim 4, its feature goes up in: the frame (39) of support (1) hydraulic cylinder (36) is installed, hydraulic pressurization piece (40) is installed on hydraulic cylinder (36) piston rod, the upper surface of suddenly stopping cam (11) is equipped with bearing (14) and is matched with the hydraulic pressurization piece (40) of hydraulic cylinder (36) piston rod, and hydraulic pressurization piece (40) is processed with the oil supply hole that oil-feed through hole and urgency stops cam and links.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100126744A CN100374846C (en) | 2005-07-09 | 2005-07-09 | Work condition analogue rolling contact fatigue tester |
| PCT/CN2006/001584 WO2007006210A1 (en) | 2005-07-09 | 2006-07-06 | Rolling contact fatigue tester for inspecting the simulated working condition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100126744A CN100374846C (en) | 2005-07-09 | 2005-07-09 | Work condition analogue rolling contact fatigue tester |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1715869A true CN1715869A (en) | 2006-01-04 |
| CN100374846C CN100374846C (en) | 2008-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100126744A Expired - Fee Related CN100374846C (en) | 2005-07-09 | 2005-07-09 | Work condition analogue rolling contact fatigue tester |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN100374846C (en) |
| WO (1) | WO2007006210A1 (en) |
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Also Published As
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| WO2007006210B1 (en) | 2007-02-22 |
| WO2007006210A1 (en) | 2007-01-18 |
| CN100374846C (en) | 2008-03-12 |
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