CN103557236B - A kind of space sealed liquid lubricator - Google Patents
A kind of space sealed liquid lubricator Download PDFInfo
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- CN103557236B CN103557236B CN201310575151.5A CN201310575151A CN103557236B CN 103557236 B CN103557236 B CN 103557236B CN 201310575151 A CN201310575151 A CN 201310575151A CN 103557236 B CN103557236 B CN 103557236B
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- rolling element
- elastomer
- outer ring
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Abstract
A kind of space sealed liquid lubricator, it comprises support, internal baffle, Cock screw, elastomer, shoe cream room, first group of labyrinth seal, second group of labyrinth seal, oilhole, rolling element, retainer and bearing outer ring; It is inner that support is positioned at this device; Internal baffle is positioned at support side and is connected with support; Elastomer is between support and rolling element; The interior edge face of elastomeric inner headed face, internal baffle and the adjacently situated surfaces of support form shoe cream room jointly; The dual-cavity of the dual-cavity of elastomeric edges double polarizing keys and internal baffle inner side surface, elastomeric edges double polarizing keys and support disk inner side surface forms first group of labyrinth seal; The groove at the left and right two ends of this bearing outer ring forms second group of labyrinth seal with the boss of internal baffle periphery, the boss of support disk periphery respectively; It is circumferentially uniform that rolling element is arranged in elastomeric outer; Retainer connects each rolling element and between elastomer and bearing outer ring; The inner headed face of bearing outer ring contacts with rolling element.
Description
Technical field
The present invention relates to a kind of space sealed liquid lubricator, belong to space hydraulic seal lubrication technical field.
Background technique
Spacecraft is usually in more than 500km aloft work, and its external pressure is generally 1.33 × 10
-8the high vacuum of more than Pa.Under high vacuum environment, two smooth metal surface contacted with each other can produce cold welding and friction welding, and this is fatal to moving element.Therefore, high vacuum environment has particular/special requirement to lubrication.In addition, high aerial microgravity environment also makes traditional ground liquids lubrication system cisco unity malfunction, if lubricant oil is the spherical somewhere swimming in fuel tank, makes oil pump work under oil starvation state and damage; And the evaporation of lubricant oil and climbing to move also be that the subject matter faced is lubricated in space, therefore must the seal lubrication device of reliable design.At present, the liquid lubrication of space mechanism equipment mainly adopts the porous retainer of floodlubrication oil and auxiliary oil conservator jointly to form, then by capillary effect, heating and vibration etc., lubricant oil is added to surface to be lubricated from auxiliary oil conservator, not only quality is large, and complex structure, its seal arrangement is oil resistant rubber seal ring mainly.
Summary of the invention
1. object: the object of the invention is the sealing for lubricant oil under space high vacuum and microgravity environment and supply problem, provides a kind of space sealed liquid lubricator.Which overcoming the deficiencies in the prior art, is a kind of seal lubrication device saved oil storage space, reduce lubricant oil volatilization, extend operating life.
2. technological scheme: a kind of space of the present invention sealed liquid lubricator.It comprises support, internal baffle, Cock screw, elastomer, shoe cream room, first group of labyrinth seal, second group of labyrinth seal, oilhole, rolling element, retainer and bearing outer ring.Position annexation between them is: it is inner that this support is positioned at this device; This internal baffle is positioned at support side, and is connected by Cock screw and support; This elastomer is between support and rolling element, and its inner headed face contacts with the supporting surface of support, and periphery contacts with rolling element, produces periodic vibration distortion during work; This elastomeric inner headed face, the interior edge face of internal baffle and the adjacently situated surfaces of support form shoe cream room jointly; Dual-cavity on dual-cavity, elastomeric edges double polarizing keys and support disk inner side surface on this elastomeric edges double polarizing keys and internal baffle inner side surface forms first group of labyrinth seal jointly; Groove in the middle part of this bearing outer ring inner headed face is as the raceway of rolling element, and the groove at left and right two ends forms second group of labyrinth seal jointly with the boss on the boss on internal baffle periphery, support disk periphery respectively; And the aperture matched along the support wave number that elastomeric circumferencial direction is provided with number and support is as oilhole; This rolling element is arranged in elastomeric outer, contacts with elastomeric periphery, and along the circumferential direction uniform; This retainer connects each rolling element and between elastomer and bearing outer ring, for ensureing that rolling element is uniform in circumferential direction; This bearing outer ring is the outermost surface part of this bearing arrangement, and the inner headed face of bearing outer ring contacts with rolling element.
Described support is a corrugated round ring parts, and be a shock wave cam, there is a circular hole its inside, and this circular hole is the axis hole installing reach; Near axis hole, design one group of predetermined number and circumferential uniform tapped hole, this group tapped hole is for installing Cock screw; Its outer installment supporting surface of one predetermined wave number, arranging a disk, the periphery of disk having the boss for sealing of one group of predetermined number, the inner side surface of disk designs the dual-cavity for sealing of one group of predetermined number in one end of shock wave cam.
Described internal baffle is a thin-wall circular ring parts, is designed with a circular hole therein, and this circular hole is the positioning hole installing support; Uniform and the circular hole that number is consistent with support upper screwed hole number of design circumference near positioning hole, this organizes circular hole for locating Cock screw; Internal baffle periphery designs the boss for sealing of one group of predetermined number, internal baffle inner side surface designs the dual-cavity for sealing of one group of predetermined number.
Described Cock screw is commercial that chooses as required.
Described elastomer is a thin-wall circular ring parts, the aperture that the supporting surface wave number along elastomeric circumferential directions number and support matches, the double polarizing keys for sealing of elastomeric edge designs one group of predetermined number.
The cavity volume that described shoe cream room is elastomeric inner headed face, the interior edge face of internal baffle and the adjacently situated surfaces of support form jointly;
Described first group of labyrinth seal is made up of jointly the dual-cavity of the dual-cavity on elastomeric edges double polarizing keys and internal baffle inner side surface, elastomeric edges double polarizing keys and support disk inner side surface;
Described second group of labyrinth seal is made up of with the boss on the boss on internal baffle periphery, support disk periphery respectively jointly the groove at two ends left and right on bearing outer ring inner headed face;
Described oilhole is radial hole, is uniformly distributed along elastomeric circumferencial direction.
Described rolling element is cylindrical component, is arranged between bearing outer ring and elastomer, and its number is relevant with the supply of lubricant oil.
Described retainer is circle ring parts, to be arranged between bearing outer ring with elastomer and to be connected each rolling element.
Described bearing outer ring is circle ring parts, is made up of a pair of identical half bearing outer ring part; Its inner headed face contacts with rolling element, is processed with the groove as rolling element raceway within it in the middle part of disc; Within it the left and right end of disc designs the groove of one group of predetermined number.
3. the principle of the invention and operating mode brief introduction as follows: the principle of space sealed liquid lubricator that the present invention announces and operating mode are the interactions in utilized device between each part, by the contact of adjacent parts, external load is passed to elastomer, elastomer generation resiliently deformable is also converted into harmonic motion, and then transfer energy to lubricant oil and its pressure is changed.This pressure is much smaller than the volumetric modulus of elasticity of lubricant oil, and therefore lubricant oil has incompressibility, and when the lubricating oil pressure in shoe cream room is greater than friction surface pressure, namely lubricant oil flow to friction surface through oilhole.The space sealed liquid lubricator that the present invention announces adopts dual labyrinth seal, i.e. first group of labyrinth seal and second group of labyrinth seal.According to formula U=(p
1-p
2) U is the fluid flow of overflowing in labyrinth seal in C(formula, (p
1-p
2) be the pressure difference at sealing surface two ends inside and outside labyrinth seal, C is the conductance of labyrinth seal) known, the fluid flow of overflowing from labyrinth seal is relevant with conductance with the pressure difference at inside and outside sealing surface two ends.When bearing does not work, the lubricant oil be stored in shoe cream room needs could overflow through first group and second group of labyrinth seal; When bearing working, first group of labyrinth seal both sides is all full of lubricant oil, and the pressure of inside and outside sealing surface is substantially identical, can effectively suppress the lubricant oil in shoe cream room to be overflowed.Meanwhile, if select the lubricant oil of low saturation vapour pressure, sealing effect is better.
4, the invention has the advantages that:
(1) fuel system: space disclosed in this invention sealed liquid lubricator, utilize the interaction between each part of internal system, external load is passed to elastomer, make elastomer produce resiliently deformable and be converted into harmonic motion, and then transfer energy to lubricant oil and its pressure is changed.This pressure is much smaller than the volumetric modulus of elasticity of lubricant oil, and therefore lubricant oil has incompressibility, and when the lubricating oil pressure in shoe cream room is greater than friction surface pressure, namely lubricant oil flow to friction surface through oilhole, realizes lubrication oil supplying;
(2) double seal is revealed to reduce lubricating oil: space sealed liquid lubricator involved in the present invention, and when bearing does not work, the lubricant oil in shoe cream room could need be revealed through first group of labyrinth and second group of labyrinth; During bearing working, the inside and outside sealing surface of first group of labyrinth seal is all full of lubricant oil, and the pressure of inside and outside sealing surface is substantially identical, can effectively suppress the lubricant oil in shoe cream room to be overflowed.
Accompanying drawing explanation
Fig. 1 .1 is space disclosed by the invention sealed liquid lubricator plan view;
Fig. 1 .2 is space disclosed by the invention sealed liquid lubricator sectional drawing;
Fig. 2 is lubrication mechanism schematic diagram disclosed by the invention;
Fig. 3 .1, Fig. 3 .2 are sealing principle schematic diagram disclosed by the invention.
In figure:
1. support; 2. internal baffle; 3. Cock screw; 4. elastomer; 5. shoe cream room; 6. first group of labyrinth seal; 7. second group of labyrinth seal; 8. oilhole; 9. rolling element; 10. retainer; 11. bearing outer rings; 12. external loads; The power that 13. rolling elements transmit; Lubricating oil pressure in 14. shoe cream rooms; 15. friction surface lubricating oil pressures; The effusion route of lubricant oil in 16. shoe cream rooms; The effusion route of 17. friction surface lubricant oil; 18. first groups of labyrinth seal inside pressure; 19. first groups of labyrinth seal outside pressure.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further details.
As shown in Fig. 1 .1 and Fig. 1 .2, it is structural representation of the present invention.A kind of space of the present invention sealed liquid lubricator, is made up of a few part such as support 1, internal baffle 2, Cock screw 3, elastomer 4, shoe cream room 5, first group of labyrinth seal 6, second group of labyrinth seal 7, oilhole 8, rolling element 9, retainer 10 and bearing outer ring 11.Position annexation between them is: it is inner that support 1 is positioned at this device, internal baffle 2 is positioned on the right side of support 1, its left side contacts with support 1, and be connected by Cock screw 3 and support 1, elastomer 4 is between support 1 and rolling element 9, its inner headed face contacts with the supporting surface of support 1, and periphery contacts with rolling element 9, produces periodic vibration distortion during work; The adjacently situated surfaces of the inner headed face of elastomer 4, the left side of internal baffle 2 and support 1 forms shoe cream room 5 jointly; Dual-cavity on dual-cavity, elastomer 4 edge double polarizing keys and internal baffle inner side surface on elastomer 4 edge double polarizing keys and internal baffle 2 left side, the dual-cavity on support 1 disk inner side surface form first group of labyrinth seal 6 jointly; Groove in the middle part of bearing outer ring 11 inner headed face is as the raceway of rolling element, and the groove at left and right two ends forms second group of labyrinth seal 7 jointly with the boss on the boss on internal baffle 2 periphery, support 1 disk periphery respectively; The aperture matched along circumferential directions number and the supporting surface wave number of elastomer 4 is as oilhole 8; It is outside that rolling element 9 is arranged in elastomer 4, contacts with the periphery of elastomer 4, and along the circumferential direction uniform; Retainer 10 is between elastomer 4 with bearing outer ring 11 and be connected each rolling element 9, uniform in circumferential direction for ensureing rolling element 9; Bearing outer ring 11 is outermost surface parts of this bearing means, and the inner headed face of bearing outer ring 11 contacts with rolling element 9, and the groove in the middle part of bearing outer ring 11 inner headed face is as the raceway of rolling element 9.
In the present invention, bearing outer ring 11, be designed to circle ring parts, it is made up of two identical half bearing outer ring parts, during work, external load 12 acts on elastomer 4 by rolling element 9, rolling element 9 is cylindrical component, is arranged between bearing outer ring 11 and elastomer 4, and its effect the external load that bearing outer ring 11 bears is delivered to elastomer 4 and makes it produce periodic vibration distortion, and its number is relevant with the supply of lubricant oil, elastomer 4 is a thin-wall circular ring parts, the aperture that circumferential directions number and supporting surface wave number along elastomer 4 match, the double polarizing keys for sealing of edge designs one group of predetermined number of elastomer 4, and elastomer 4 pairs of materials have higher requirements, retainer 10 is circle ring parts, and being arranged between bearing outer ring 11 with elastomer 4 and being connected each rolling element 9, its effect keeps rolling element 9 uniform along elastomer 4 circumferencial direction, support 1 is a corrugated round ring parts, it is a shock wave cam, there is a circular hole its inside, this circular hole is the axis hole installing reach, one group of predetermined number is designed and circumferential uniform tapped hole near axis hole, this group tapped hole is for installing Cock screw 3, a disk is designed at shock wave cam left end, disk periphery designs the boss for sealing of one group of predetermined number, disk inner side surface designs the dual-cavity for sealing of one group of predetermined number, the supporting surface with a predetermined wave number is designed with in support 1 outside, elastomer 4 is played a supportive role, internal baffle 2 is a thin-wall circular ring parts, be designed with a circular hole therein, this circular hole is the positioning hole installing support 1, uniform and the circular hole that number is consistent with support upper screwed hole number of design circumference near positioning hole, this group circular hole is for locating Cock screw 3, internal baffle 2 periphery designing the boss for sealing of one group of predetermined number, internal baffle 2 inner side surface designing the dual-cavity for sealing of one group of predetermined number, the adjacently situated surfaces of the inner headed face of elastomer 4, internal baffle 2 inner side surface and support 1 forms shoe cream room 5 jointly, and for storing lubricant oil, the friction area of lubricating the volume size of shoe cream room 5 and projected life and needing is relevant, oilhole 8 is distributed on elastomer 4, connects shoe cream room 5 and bearing outer ring 11, forms the circulation loop of lubricant oil, realizes the lubrication to bearing outer ring 11 inner headed face (rubbing surface).Dual-cavity on dual-cavity, elastomer 4 edge double polarizing keys and support 1 disk inner side surface on elastomer 4 edge double polarizing keys and internal baffle 2 inner side surface forms first group of labyrinth seal 6 jointly; On bearing outer ring 11 inner headed face, the groove at left and right two ends forms second group of labyrinth seal 7 jointly with the boss on the boss on internal baffle 2 periphery, support 1 disk periphery respectively; When bearing does not work, the lubricant oil being stored in shoe cream room 5 li needs could overflow through first group of labyrinth seal 6 and second group of labyrinth seal 7; When bearing working, first group of labyrinth seal 6 both sides is all full of lubricant oil, and the air pressure of inside and outside both sides is more or less the same, and can effectively suppress the lubricant oil in shoe cream room 5 to be overflowed.
As shown in Figure 2, be lubrication mechanism schematic diagram of the present invention.During work, bearing outer ring 11 drives by external force, rotates around himself center line, with support 1, relative movement occurs; Rolling element 9 is driven the center line around bearing outer ring 11 to rotate by bearing outer ring 11 under frictional force effect, and rolling element 9 is also rotation simultaneously; The external load 12 that bearing outer ring 11 transmits passes to elastomer 4 by contacting with each other through rolling element 9, external load 12 is passed to support 1 by contact relation by elastomer 4 again, being provided support for elastomer 4 by support 1, is linear contact lay between support 1 and elastomer 4; Elastomer 4 is a thin-wall circular ring parts, and neutral surface does not along the circumferential direction extend, under external load 12 acts on, produce distortion, and along the circumferential direction the radial displacement of elastomer 4 is different, namely produces harmonic motion.By the contact of adjacent parts, the harmonic motion of elastomer 4 passes to the lubricant oil of shoe cream room 5 inside, and the pressure of lubricant oil is changed.Due to produced pressure relative to lubricant oil volumetric modulus of elasticity very little, operationally there is incompressibility depending on lubricant oil, when the lubricating oil pressure 14 in shoe cream room is greater than the friction surface lubricating oil pressure 15 of residing environment, namely lubricant oil flow to friction surface through oilhole 8, realizes the object of lubricant oil supply.The power that sequence number 13 is transmitted for rolling element.
As shown in Fig. 3 .1 and Fig. 3 .2, it is sealing principle schematic diagram of the present invention.The space sealed liquid lubricator that the present invention announces adopts dual labyrinth seal, i.e. first group of labyrinth seal 6 and second group of labyrinth seal 7.According to formula U=(p1-p2) C, the fluid flow of overflowing from labyrinth seal is relevant with conductance with the pressure difference at inside and outside sealing surface two ends.When bearing does not work, the lubricant oil be stored in shoe cream room needs could overflow through first group of labyrinth seal 6 and second group of labyrinth seal 7; When bearing working, first group of labyrinth seal 6 both sides is all full of lubricant oil, and the pressure of inside and outside sealing surface is substantially identical, can effectively suppress the lubricant oil in shoe cream room to be overflowed.Meanwhile, if select the lubricant oil of low saturation vapour pressure, sealing effect is better.Sequence number 16 is the effusion route of lubricant oil in shoe cream room; Sequence number 17 is the effusion route of friction surface lubricant oil; Sequence number 18 is first group of labyrinth seal inside pressure; Sequence number 19 is first group of labyrinth seal outside pressure.
Claims (1)
1. a space sealed liquid lubricator, is characterized in that: it comprises support, internal baffle, Cock screw, elastomer, shoe cream room, first group of labyrinth seal, second group of labyrinth seal, oilhole, rolling element, retainer and bearing outer ring; It is inner that this support is positioned at this device; This internal baffle is positioned at support side, and is connected by Cock screw and support; This elastomer is between support and rolling element, and its inner headed face contacts with the supporting surface of support, and periphery contacts with rolling element, produces periodic vibration distortion during work; This elastomeric inner headed face, the interior edge face of internal baffle and the adjacently situated surfaces of support form shoe cream room jointly; The double polarizing keys at the left and right edge of this elastomer forms first group of labyrinth seal jointly with the dual-cavity on the dual-cavity on internal baffle inner side surface, support disk inner side surface respectively; Groove in the middle part of this bearing outer ring inner headed face is as the raceway of rolling element, and the groove at left and right two ends forms second group of labyrinth seal jointly with the boss on the boss on internal baffle periphery, support disk periphery respectively; And the aperture matched along the support wave number that elastomeric circumferencial direction is provided with number and support is as oilhole; This rolling element is arranged in elastomeric outer, contacts with elastomeric periphery, and along the circumferential direction uniform; This retainer connects each rolling element and between elastomer and bearing outer ring, for ensureing that rolling element is uniform in circumferential direction; This bearing outer ring is the outermost surface part of bearing arrangement, and the inner headed face of bearing outer ring contacts with rolling element;
Described support is a corrugated round ring parts, and be a shock wave cam, there is a circular hole its inside, and this circular hole is the axis hole installing reach; Near axis hole, design one group of predetermined number and circumferential uniform tapped hole, this group tapped hole is for installing Cock screw; Its outer installment supporting surface of one predetermined wave number, arranging a disk, the periphery of disk having the boss for sealing of one group of predetermined number, the inner side surface of disk designs the dual-cavity for sealing of one group of predetermined number in one end of shock wave cam;
Described internal baffle is a thin-wall circular ring parts, is designed with a circular hole therein, and this circular hole is the positioning hole installing support; Uniform and the circular hole that number is consistent with support upper screwed hole number of design circumference near positioning hole, this organizes circular hole for locating Cock screw; Internal baffle periphery designs the boss for sealing of one group of predetermined number, internal baffle inner side surface designs the dual-cavity for sealing of one group of predetermined number;
Described elastomer is a thin-wall circular ring parts, the aperture that the supporting surface wave number along elastomeric circumferential directions number and support matches, and elastomeric left and right edge respectively designs the double polarizing keys for sealing of one group of predetermined number;
Described oilhole is radial hole, is uniformly distributed along elastomeric circumferencial direction;
Described rolling element is cylindrical component, is arranged between bearing outer ring and elastomer, and its number is relevant with the supply of lubricant oil;
Described retainer is circle ring parts, to be arranged between bearing outer ring with elastomer and to be connected each rolling element;
Described bearing outer ring is circle ring parts, is made up of a pair of identical half bearing outer ring part; Its inner headed face contacts with rolling element, is processed with the groove as rolling element raceway within it in the middle part of disc; Within it the left and right end of disc designs the groove of one group of predetermined number.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310575151.5A CN103557236B (en) | 2013-11-15 | 2013-11-15 | A kind of space sealed liquid lubricator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310575151.5A CN103557236B (en) | 2013-11-15 | 2013-11-15 | A kind of space sealed liquid lubricator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103557236A CN103557236A (en) | 2014-02-05 |
| CN103557236B true CN103557236B (en) | 2015-11-04 |
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ID=50011563
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310575151.5A Expired - Fee Related CN103557236B (en) | 2013-11-15 | 2013-11-15 | A kind of space sealed liquid lubricator |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109268394B (en) * | 2018-11-12 | 2020-04-14 | 安徽华旦机械制造有限公司 | Rotary storage type oil seal bearing |
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| US20060078244A1 (en) * | 2004-10-11 | 2006-04-13 | Lg Cable Ltd. | Hybrid bearing |
| CN201539502U (en) * | 2009-10-09 | 2010-08-04 | 张晓梨 | Bearing device |
| CN102720765A (en) * | 2011-12-02 | 2012-10-10 | 北京航空航天大学 | Liquid lubricating system specially used for high-speed bearing |
| CN102788083A (en) * | 2012-06-27 | 2012-11-21 | 北京航空航天大学 | Lubricating oil supplying bearing system driven by machinery-fluid coupling |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2235748T3 (en) * | 2000-01-18 | 2005-07-16 | Ina-Schaeffler Kg | ELASTIC SEALING GASKET FOR A CAM FOLLOWER. |
-
2013
- 2013-11-15 CN CN201310575151.5A patent/CN103557236B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060078244A1 (en) * | 2004-10-11 | 2006-04-13 | Lg Cable Ltd. | Hybrid bearing |
| CN201539502U (en) * | 2009-10-09 | 2010-08-04 | 张晓梨 | Bearing device |
| CN102720765A (en) * | 2011-12-02 | 2012-10-10 | 北京航空航天大学 | Liquid lubricating system specially used for high-speed bearing |
| CN102788083A (en) * | 2012-06-27 | 2012-11-21 | 北京航空航天大学 | Lubricating oil supplying bearing system driven by machinery-fluid coupling |
Non-Patent Citations (1)
| Title |
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| 月球车辆无动力润滑系统的结构设计与仿真;姬芬竹，赵文平;《润滑与密封》;20091031;第34卷(第10期);第41-44页 * |
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Granted publication date: 20151104 Termination date: 20171115 |