CN103728075A - Tester for elastohydrodynamic lubricating oil film traction with spinning - Google Patents
Tester for elastohydrodynamic lubricating oil film traction with spinning Download PDFInfo
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- CN103728075A CN103728075A CN201410006064.2A CN201410006064A CN103728075A CN 103728075 A CN103728075 A CN 103728075A CN 201410006064 A CN201410006064 A CN 201410006064A CN 103728075 A CN103728075 A CN 103728075A
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Abstract
A ball groove type tester used for testing elastohydrodynamic lubricating oil film traction with spinning comprises a large base plate, a stepped shaft, a small base plate, an electric spindle I, an electric spindle II, a coupler, a groove test piece, a ball test piece, a linear guide track, a V-shaped groove, a worm and gear mechanism, a lever-pulley loading mechanism and a traction sensor. The large base plate is connected with the small base plate through the stepped shaft, a worm gear is installed on the stepped shaft, and a worm shaft is installed on the large base plate to control the worm gear to rotate. The electric spindle II and the groove test piece are fixed on the small base plate, the ball test piece is fixed on the end portion of the electric spindle I installed in the V-shaped groove fixed on the movable portion of the linear guide track, and loading of the ball test piece on the groove test piece is achieved through a weight and the lever-pulley loading mechanism. The tester can simulate the elastohydrodynamic lubricating state of two contact pieces under oval contact in the sliding state with different spinning quantities and can accurately measure elastohydrodynamic traction of a lubricant.
Description
Technical field
The present invention relates to a kind of tester, especially relate to a kind of for testing the ball slot type tester with the elastohydrodynamic lubrication oil film tractive force of spin.
Background technology
Elastohydrodynamic lubrication (abbreviation elastohydrodynamic lubrication) is many points in engineering, the common lubricated form of line contact parts, its research need to be considered the rheological characteristics of lubricant between the elastic deformation of two relative motion solid surface and surface of contact simultaneously, and the transmission contact elements such as half/whole ring surface type buncher, rolling bearing are in most cases all in ehl status.Between two contact elements under ehl status, can form one deck elastohydrodynamic lubrication oil film, the bullet stream pulling figure of oil film half-and-half/the dynamic behavior impact of the driving members such as whole ring surface type buncher, rolling bearing is very large, such as the oil film tractive force existing between the cone dish of half/whole ring surface type buncher and roller has determined the transmission of power ability of whole buncher.Because different lubricants has different traction rheological characteristicss, and the tractive force error ratio calculating by theory is larger, in engineering, generally will test tractive force by designing special oil film tractive force test unit.Therefore the research that, is lubricated the experiment tester of agent bullet stream tractive force just has great importance.
At present, the general pulling figure test that is lubricated agent with two Disk Machines or ball dish testing machine, the part but they come with some shortcomings: the 1. ehl status under can not the different spin conditions of continuous analog.2. by regulating the angle of two surface in contact turning axles to introduce different spinors, its adjustment process more complicated.3. existing charger generally adopts hydraulic loaded, because hydraulic loaded exist to be leaked, the defect such as unstable, cannot accurately obtain loading force.4. what existing ball dish testing machine was realized is point (circle) contact, can not realize point (ellipse) contact.
Summary of the invention
In order to overcome the deficiency in background technology, the present invention discloses a kind of elastohydrodynamic lubrication oil film tractive force tester with spin, described tester can be simulated two contact elements and be rolled with the ehl status under sliding mode and different spinor, thereby can Reality simulation operating mode, accurately measure the bullet stream tractive force of lubricant.
The present invention is that the technical scheme that adopts of the deficiency that solves the problems of the technologies described above is as described below.
A kind of elastohydrodynamic lubrication oil film tractive force tester with spin, described tester is by worm-and-wheel gear, angular transformation mechanism, guiding rail mechanism and the most of composition of lever-pulley load maintainer four, specifically comprise large base plate, multidiameter, platter, electricity main shaft I, electricity main shaft II, shaft coupling, groove test specimen, ball test specimen, line slideway, V-type groove, worm gear, worm shaft, lever I, lever II, fixed pulley and drawbar load sensing mechanism, large base plate is connected with multidiameter with platter, one end of multidiameter connects large base plate by rolling bearing II, the other end connects platter by flat key II,
Described angular transformation mechanism comprises platter, electric main shaft II, shaft coupling, groove test specimen and balancing weight, on platter, be fixedly installed a bearing and a bearing seat I, electric main shaft II is installed on bearing, electricity main shaft II is connected with one end of groove test specimen by shaft coupling, the other end of groove test specimen is arranged in the bearing seat I on platter by rolling bearing I, on platter, balancing weight is installed, to guarantee that platter is in horizontality simultaneously;
Described guiding rail mechanism comprises support, supporting plate, line slideway, V-type groove, electric main shaft I, drawbar load sensing mechanism and ball test specimen, support one end is fixed on large base plate, the other end is fixedly installed a supporting plate, on supporting plate, fixedly mount the fixed part of line slideway, and on the movable part of line slideway, fix a V-type groove, electric main shaft I is installed in V-type groove, and electric main shaft I can be rotated around self axis in V-type groove, along electric main shaft I sense of rotation, drawbar load sensing mechanism is installed, the termination portion of electric main shaft I is provided with ball test specimen simultaneously;
Described lever-pulley load maintainer comprises lever I, lever II, push rod, connecting rod, counterweight, steel wire and fixed pulley, lever I is arranged on supporting plate, one end of lever I is fixed on supporting plate by fixed hinge bearing I, the other end is connected with lever II by a connecting rod, A point place in lever I is provided with a push rod, the other end of push rod connects the movable part of line slideway, lever II one end is connected with connecting rod, the other end connects counterweight with one section of steel wire through fixed pulley, and there is a fixed hinge bearing II at the B point place in lever II;
Described worm-and-wheel gear comprises worm gear, worm shaft and index dial, and worm gear is arranged on multidiameter by flat key I, and worm shaft is installed in the bearing seat II and bearing seat III being fixed on large base plate, and one end of worm shaft is provided with index dial.
Described a kind of elastohydrodynamic lubrication oil film tractive force tester, described ball test specimen and the surfaceness of groove test specimen with spin
=0.02mm.
Described a kind of elastohydrodynamic lubrication oil film tractive force tester with spin, described worm shaft is single start worm.
Described a kind of elastohydrodynamic lubrication oil film tractive force tester with spin, the axle center of described multidiameter overlaps with the center of circle of groove test specimen at the circular arc of surface level institute projection.
Described a kind of elastohydrodynamic lubrication oil film tractive force tester with spin, described groove test specimen is an axle with turning circle cambered surface, its turning circle cambered surface is annular indent.
Described a kind of elastohydrodynamic lubrication oil film tractive force tester with spin, described ball test specimen is a disk, the wheel rim of its disk is sphere.
Described a kind of elastohydrodynamic lubrication oil film tractive force tester with spin, the scale value on described index dial is corresponding one by one with the angle value of two turning axles of ball test specimen and groove test specimen.
Adopt technical scheme as above, the present invention has following beneficial effect.
1. a kind of elastohydrodynamic lubrication oil film tractive force tester with spin of the present invention, utilizes angle that worm-and-wheel gear controls two test specimen turning axles to obtain different spin values, thereby simulates the ehl status under different spin conditions; By electric main shaft I and electric main shaft II, drive respectively ball test specimen and groove test specimen to rotate, when two test specimen contacts, by atomizer, lubricating oil is sprayed into contact region, then, regulate respectively the rotating speed of electric main shaft I and electric main shaft II, make groove test specimen different from the linear velocity of ball test specimen at contact point place and produce relative sliding, thereby reach between simulation two contact elements, roll with the lubricating status sliding.
2. a kind of elastohydrodynamic lubrication oil film tractive force tester with spin of the present invention, can accurately simulate the ehl status under different spin values by worm-and-wheel gear from index dial.
3. the single start worm axle due to employing has self-locking performance, accurately the position of pickup groove test specimen and ball test specimen.
4. lever-pulley load maintainer that the present invention adopts has obvious reinforcement effect, and loading range is large, easy to adjust, and can directly read the numerical value of normal load.
5. this test instrument adopts groove test specimen and ball test specimen, can decompose loading force on the axially and radially both direction of grooving test specimen, thereby can simulate the real working condition of half/whole ring surface type buncher etc.
6. in this test instrument, the axle center of multidiameter overlaps with the center of circle of groove test specimen at the circular arc of surface level institute projection, thereby can guarantee under idle condition, and groove test specimen and ball test specimen are always and contact.
Accompanying drawing explanation
Fig. 1 is the vertical view of a kind of elastohydrodynamic lubrication oil film tractive force tester with spin of the present invention.
Fig. 2 is the front view of tester shown in Fig. 1.
Fig. 3 is the structural representation of worm shaft of the present invention.
Fig. 4 is the structural representation of ball test specimen of the present invention.
In figure: 1-worm-and-wheel gear; The large base plate of 101-; 102-worm gear; 103-worm shaft; 104-index dial; 105-flat key I; 106-flat key II; 107-multidiameter; 108-rolling bearing II; 109-bearing seat II; 110-bearing seat III; 2-angular transformation mechanism; 201-platter; 202-electricity main shaft II; 203-shaft coupling; 204-groove test specimen; 205-bearing seat I; 206-balancing weight; 207-screw; 208-bearing; 3-guiding rail mechanism: 301-support; 302-supporting plate; 303-line slideway; The fixed part of 303A-line slideway; The movable part of 303B-line slideway; 304-rolling bearing I; 305-electricity main shaft I; 306-V type groove; 307-drawbar load sensing mechanism; 308-ball test specimen; 4-lever-pulley load maintainer: 401-lever I; 402-lever II; 403-push rod; 404-connecting rod; 405-steel wire; 406-fixed pulley; 407-counterweight; 408-fixed hinge bearing II; 409-fixed hinge bearing I; 410-atomizer.
Embodiment
Below in conjunction with drawings and Examples, be described in further detail the present invention, but the present invention is not limited to the following examples.
By reference to the accompanying drawings, a kind of elastohydrodynamic lubrication oil film tractive force tester with spin, is comprised of worm-and-wheel gear (1), angular transformation mechanism (2), guiding rail mechanism (3) and lever-pulley load maintainer (4);
Described a kind of elastohydrodynamic lubrication oil film tractive force tester with spin, described tester includes: large base plate (101), multidiameter (107), platter (201), electricity main shaft I (305), electricity main shaft II (202), shaft coupling (203), groove test specimen (204), ball test specimen (308), line slideway (303), V-type groove (306), worm gear (102), worm shaft (103), lever I (401), lever II (402), fixed pulley (406) and drawbar load sensing mechanism (307), large base plate (101) is connected with multidiameter (107) with platter (201), the rolling bearing II for one end (108) of multidiameter (107) connects large base plate (101), the other end connects platter (201) by flat key II (106),
Described angular transformation mechanism (2) comprises platter (201), electricity main shaft II (202), shaft coupling (203), groove test specimen (204) and balancing weight (206), on platter (201), be fixedly installed a bearing (208) and a bearing seat I (205), the upper electric main shaft II (202) of installing of bearing (208), electricity main shaft II (202) is connected with one end of groove test specimen (204) by shaft coupling (203), the bearing seat I (205) that the rolling bearing I for the other end (304) of groove test specimen (204) is arranged on platter (201) is inner, on platter (201), balancing weight (206) is installed simultaneously, to guarantee that platter (201) is in horizontality, the axle center of multidiameter (107) overlaps with the center of circle of groove test specimen (204) at the circular arc of surface level institute projection, while guaranteeing like this rotation scale under no-load condition (104), groove test specimen (204) and ball test specimen (308) are always and contact,
Described guiding rail mechanism (3) comprises support (301), supporting plate (302), line slideway (303), V-type groove (306), electricity main shaft I (305), drawbar load sensing mechanism (307) and ball test specimen (308), support (301) one end is fixed on large base plate (101), the other end is fixedly installed a supporting plate (302), the fixed part (303A) of the upper fixed installation of supporting plate (302) line slideway, and on the movable part of line slideway (303B), fix a V-type groove (306), the inner electric main shaft I (305) that is provided with of V-type groove (306), and electric main shaft I (305) can be around self axis in the inner rotation of V-type groove (306), along electric main shaft I (305) sense of rotation, drawbar load sensing mechanism (307) is installed simultaneously, the termination portion of electricity main shaft I (305) is provided with ball test specimen (308), when ball test specimen (308) contacts with groove test specimen (204), the tractive force being produced by lubricating oil forces electric main shaft I (305) around self axis rotation, thereby inner drawbar load sensing mechanism (307) reading of V-type groove (306) is changed, by data acquisition and reforming unit, record is collected again, import computing machine into and carry out post-processed,
Described lever-pulley load maintainer (4) comprises lever I (401), lever II (402), push rod (403), connecting rod (404), counterweight (407), steel wire (405) and fixed pulley (406), lever I (401) is arranged on supporting plate (302), one end of lever I (401) is fixed on supporting plate (302) by fixed hinge bearing I (409), the other end is connected with lever II (402) by a connecting rod (404), A point place in lever I (401) is provided with a push rod (403), the other end of push rod (403) connects the movable part (303B) of line slideway, lever II (402) one end is connected with connecting rod (404), the other end connects counterweight (407) with one section of steel wire (405) through fixed pulley (406), there is a fixed hinge bearing II (408) at B point place in lever II (402), utilize the gravity straight down of counterweight (407) generation to (405) pulling force of steel wire, through lever II (402) and lever I (401), pulling force is amplified, make push rod (403) produce enough large thrust, the movable part (303B) that promotes line slideway moves along guide rail direction, thereby completes the loading of ball test specimen (308) to groove test specimen (204),
Described worm-and-wheel gear (1) comprises worm gear (102), worm shaft (103) and index dial (104), worm gear (102) is arranged on multidiameter (107) by flat key I (105), it is inner that worm shaft (103) is installed on the bearing seat II (109) and the bearing seat III (110) that are fixed on large base plate (101), one end of worm shaft (103) is provided with index dial (104), and the scale value on index dial (104) is corresponding one by one with the angle value of two turning axles of groove test specimen (204), ball test specimen (308).
While implementing a kind of elastohydrodynamic lubrication oil film tractive force tester with spin of the present invention, first lubricating oil is heated to design temperature, rotary dial (104) again, allow worm shaft (103) and worm gear (102) drive platter (201) to rotate, thereby the angle between control flume test specimen (204) and ball test specimen (308) two turning axles, obtains different spin values; Then make electric main shaft I (305) and electric main shaft II (202) drive respectively ball test specimen (308) and groove test specimen (204) to rotate, by the lubricating oil after heating through atomizer (410) spirt ball groove contact region; The counterweight (407) that finally loads corresponding weight makes ball test specimen (308) and groove test specimen (204) produce Elliptical Contacts; The weight that loads counterweight (407) is to a thrust of push rod (403) after two-stage leverage amplifies, and its thrust magnitude equals normal load between ball test specimen (308) and groove test specimen (204) and adds the movable part (303B) of the main shaft I (305) that powers on, V-type groove (306), line slideway and the general assembly (TW) of ball test specimen (308) in the upper friction force of generation of the fixed part (303A) of line slideway;
Under the condition of sufficient lubrication, effect due to normal load, ball test specimen (308) contacts the corresponding elastic deformation of concurrent life with groove test specimen (204), point contact becomes Elliptical Contacts, between ball groove contact region, can form one deck elastohydrodynamic lubrication oil film, now, adjust the rotating speed of electric main shaft I (305) and electric main shaft II (202), make to produce relative sliding between ball test specimen (308) and groove test specimen (204) surface in contact, therefore the elastohydrodynamic lubrication oil film between two surface of contact will produce bullet stream tractive force to ball test specimen (308) and groove test specimen (204); Under the effect of bullet stream tractive force, ball test specimen (308) and electric main shaft I (305) can be around the axis of electric main shaft I (305) inner the deflecting of V-type groove (306), thereby compressing drawbar load sensing mechanism (307), by drawbar load sensing mechanism (307), the force signal of collecting is converted to digital signal, and imports computing machine into and carry out post-processed; When test finishes, reduce the weight of counterweight (407), complete unloading, therefore described tester loading and unloading operation is all very convenient;
Repeat above-mentioned steps, complete under difference spin value, different temperatures, different loads, different sliding speed effect the testing research of Elliptical Contacts elastohydrodynamic lubrication oil film tractive force.
Part not in the detailed description of the invention is prior art, therefore the present invention is not described in detail.
Claims (7)
- One kind with spin elastohydrodynamic lubrication oil film tractive force tester, it is characterized in that: described tester is by worm-and-wheel gear (1), angular transformation mechanism (2), guiding rail mechanism (3) and the most of composition of lever-pulley load maintainer (4) four, specifically comprise large base plate (101), multidiameter (107), platter (201), electricity main shaft I (305), electricity main shaft II (202), shaft coupling (203), groove test specimen (204), ball test specimen (308), line slideway (303), worm gear (102), worm shaft (103), lever I (401), lever II (402), fixed pulley (406) and drawbar load sensing mechanism (307), large base plate (101) is connected with multidiameter (107) with platter (201), the rolling bearing II for one end (108) of multidiameter (107) connects large base plate (101), the other end connects platter (201) by flat key II (106),Described lever-pulley load maintainer (4) comprises lever I (401), lever II (402), push rod (403), connecting rod (404), counterweight (407), steel wire (405) and fixed pulley (406), lever I (401) is arranged on supporting plate (302), one end of lever I (401) is fixed on supporting plate (302) by fixed hinge bearing I (409), the other end is connected with lever II (402) by a connecting rod (404), A point place in lever I (401) is provided with a push rod (403), the other end of push rod (403) connects the movable part (303B) of line slideway, lever II (402) one end is connected with connecting rod (404), the other end connects counterweight (407) with one section of steel wire (405) through fixed pulley (406), there is a fixed hinge bearing II (408) at B point place in lever II (402),Described worm-and-wheel gear (1) comprises worm gear (102), worm shaft (103) and index dial (104), worm gear (102) is arranged on multidiameter (107) by flat key I (105), it is inner that worm shaft (103) is installed on the bearing seat II (109) and the bearing seat III (110) that are fixed on large base plate (101), and one end of worm shaft (103) is provided with index dial (104); Described worm shaft (103) is single start worm.
- As claimed in claim 1 a kind of with spin elastohydrodynamic lubrication oil film tractive force tester, it is characterized in that: described angular transformation mechanism (2) comprises platter (201), electricity main shaft II (202), shaft coupling (203), groove test specimen (204) and balancing weight (206), on platter (201), be fixedly installed a bearing (208) and a bearing seat I (205), the upper electric main shaft II (202) of installing of bearing (208), electricity main shaft II (202) is connected with one end of groove test specimen (204) by shaft coupling (203), the bearing seat I (205) that the rolling bearing I for the other end (304) of groove test specimen (204) is arranged on platter (201) is inner, on platter (201), balancing weight (206) is installed simultaneously.
- As claimed in claim 1 a kind of with spin elastohydrodynamic lubrication oil film tractive force tester, it is characterized in that: described guiding rail mechanism (3) comprises support (301), supporting plate (302), line slideway (303), V-type groove (306), electricity main shaft I (305), drawbar load sensing mechanism (307) and ball test specimen (308), support (301) one end is fixed on large base plate (101), the other end is fixedly installed a supporting plate (302), the fixed part (303A) of the upper fixed installation of supporting plate (302) line slideway, and on the movable part of line slideway (303B), fix a V-type groove (306), the inner electric main shaft I (305) that is provided with of V-type groove (306), and electric main shaft I (305) can be around self axis in the inner rotation of V-type groove (306), along electric main shaft I (305) sense of rotation, drawbar load sensing mechanism (307) is installed simultaneously, the termination portion of electricity main shaft I (305) is provided with ball test specimen (308).
- 4. a kind of elastohydrodynamic lubrication oil film tractive force tester with spin as claimed in claim 1, is characterized in that: described ball test specimen (308) and the surfaceness of groove test specimen (204) =0.02mm.
- 5. a kind of elastohydrodynamic lubrication oil film tractive force tester with spin as claimed in claim 1, is characterized in that: the axle center of described multidiameter (107) overlaps with the center of circle of groove test specimen (204) at the circular arc of surface level institute projection.
- 6. a kind of elastohydrodynamic lubrication oil film tractive force tester with spin as claimed in claim 1, is characterized in that: described groove test specimen (204) is an axle with turning circle cambered surface, and its turning circle cambered surface is annular indent.
- 7. a kind of elastohydrodynamic lubrication oil film tractive force tester with spin as claimed in claim 1, is characterized in that: described ball test specimen (308) is a disk, and the wheel rim of its disk is sphere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410006064.2A CN103728075B (en) | 2014-01-07 | 2014-01-07 | Tester for elastohydrodynamic lubricating oil film traction with spinning |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410006064.2A CN103728075B (en) | 2014-01-07 | 2014-01-07 | Tester for elastohydrodynamic lubricating oil film traction with spinning |
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| CN103728075A true CN103728075A (en) | 2014-04-16 |
| CN103728075B CN103728075B (en) | 2015-07-08 |
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| CN201410006064.2A Expired - Fee Related CN103728075B (en) | 2014-01-07 | 2014-01-07 | Tester for elastohydrodynamic lubricating oil film traction with spinning |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107339385A (en) * | 2016-10-31 | 2017-11-10 | 西华大学 | One kind is without the monocyclic disc type stepless variable-speed unit that spins |
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| US5372033A (en) * | 1993-11-18 | 1994-12-13 | Mobil Oil Corporation | EHL test machine for measuring lubricant film thickness and traction |
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| CN101710060A (en) * | 2009-12-10 | 2010-05-19 | 张永斌 | Method for measuring interfacial shear strength under full plastic contact of discs and flat plate and device thereof |
| JP2011185761A (en) * | 2010-03-09 | 2011-09-22 | Ntn Corp | Device for measuring traction characteristic of lubricant |
| CN202793970U (en) * | 2012-08-13 | 2013-03-13 | 河南科技大学 | Double-disc type lubricating oil tractive power testing machine |
| CN203643068U (en) * | 2014-01-07 | 2014-06-11 | 四川大学 | Elastohydrodynamic lubricating oil film traction force tester with spin |
-
2014
- 2014-01-07 CN CN201410006064.2A patent/CN103728075B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5372033A (en) * | 1993-11-18 | 1994-12-13 | Mobil Oil Corporation | EHL test machine for measuring lubricant film thickness and traction |
| CN201206974Y (en) * | 2008-05-23 | 2009-03-11 | 中国矿业大学 | High-pressure microgap lubricating test machine |
| CN101710060A (en) * | 2009-12-10 | 2010-05-19 | 张永斌 | Method for measuring interfacial shear strength under full plastic contact of discs and flat plate and device thereof |
| JP2011185761A (en) * | 2010-03-09 | 2011-09-22 | Ntn Corp | Device for measuring traction characteristic of lubricant |
| CN202793970U (en) * | 2012-08-13 | 2013-03-13 | 河南科技大学 | Double-disc type lubricating oil tractive power testing machine |
| CN203643068U (en) * | 2014-01-07 | 2014-06-11 | 四川大学 | Elastohydrodynamic lubricating oil film traction force tester with spin |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107339385A (en) * | 2016-10-31 | 2017-11-10 | 西华大学 | One kind is without the monocyclic disc type stepless variable-speed unit that spins |
| CN107339385B (en) * | 2016-10-31 | 2023-08-15 | 西华大学 | Spin-free single-ring disc type stepless speed change unit |
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| CN103728075B (en) | 2015-07-08 |
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