CN105240402A - Composite dynamic/static-pressure slide bearing - Google Patents
Composite dynamic/static-pressure slide bearing Download PDFInfo
- Publication number
- CN105240402A CN105240402A CN201510655753.0A CN201510655753A CN105240402A CN 105240402 A CN105240402 A CN 105240402A CN 201510655753 A CN201510655753 A CN 201510655753A CN 105240402 A CN105240402 A CN 105240402A
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- bearing
- inner sleeve
- outside
- combined type
- described bearing
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Abstract
The invention provides a composite dynamic/static-pressure slide bearing. The composite dynamic/static-pressure slide bearing comprises a bearing inner sleeve and a bearing outer sleeve, wherein the bearing inner sleeve is arranged in the bearing outer sleeve; an original gap is formed between the bearing inner sleeve and the bearing outer sleeve; the bearing outer sleeve is provided with a liquid supply port; the liquid supply port is communicated with the original gap; a thrust cavity is formed between the end surface of one end of the bearing outer sleeve and the bearing inner sleeve; and the liquid supply port is communicated with the thrust cavity through the original gap. The composite dynamic/static-pressure slide bearing further comprises a shunt cavity; the shunt cavity is formed in the inner wall surface of the bearing outer sleeve; and the liquid supply port is communicated with the thrust cavity through the shunt cavity. The composite dynamic/static-pressure slide bearing is provided with the thrust cavity, the original gap and the liquid supply port, so that the axial force is balanced, and a liquid film is formed between the bearing inner sleeve and the bearing outer sleeve to prevent direct contact friction between an inner ring and an outer ring. According to the composite dynamic/static-pressure slide bearing, a peripheral bearing and a radial bearing are integrated into one bearing, so that the function of the radial bearing is realized when the bearing balances the axial force of a spaceflight mechanical pump.
Description
Technical field
The present invention relates to bearing, particularly, relate to a kind of space flight mechanical pump combined type hybrid sliding bearing.
Background technique
The bearing that space flight mechanical pump adopts is ceramic rolling bearing substantially, owing to there is pressure before and after the blade of mechanical pump, axial force can be produced to bearing, the displacement of the relative outer ring of bearing inner race is caused because axial force is excessive, excessive axial force causes rolling element (ceramic ball) to be climbed, and causes rolling element to become face contact form with bear inner ring grooved railway, outer ring raceway.The effect of axial force causes raceway groove plastic deformation, and when axial force is larger, its surface of contact also increases thereupon, and the plastic component of distortion also increases thereupon, finally causes bearing failure.
Through the retrieval to prior art, find that application number is 200710162615.4, name is called the sliding bearing of a kind of cylindrical shape of the disclosure of the invention of sliding bearing, has and splits bearing up and down, and the bent axle of combustion motor supports.On the internal surface of upper segmentation bearing, be at least formed with the oil groove of circumferencial direction.The whole internal surface of each segmentation bearing is provided with the groove of the circumferencial direction be processed to form through boring.Each groove that the sectional area ratio of each groove in region, circumferencial direction two end part is mainly subject to when crankshaft rotating in other region of load is large.Upper segmentation bearing forms chamfering by the front inner end edge in the sense of rotation of the bent axle of sliding supported condition relatively, and the inner end edge near this front inner end edge of lower segmentation bearing also forms chamfering, the area of each chamfered part is identical with the chamfering area of long 0.15mm ~ 0.4mm.But this invention can not balancing machine pump axial force, be easy to damage.
Summary of the invention
For defect of the prior art, the object of this invention is to provide the long-life combined type hybrid sliding bearing of a kind of low friction, not only can balancing axial thrust, liquid film can also be formed at the inside and outside inner room of bearing simultaneously, prevent the direct contact friction of Internal and external cycle.
According to combined type hybrid sliding bearing provided by the invention by bearing inner sleeve and bearing outside, be bearing lubrication and cooling by the liquid in space flight mechanical pump.
Combined type hybrid sliding bearing provided by the invention, comprises bearing inner sleeve and bearing outside;
Wherein, described bearing inner sleeve is arranged in described bearing outside; Initial void is provided with between described bearing inner sleeve and described bearing outside;
Described bearing outside is provided with supply opening; Described supply opening is communicated with described initial void; Thrust chamber is provided with between one end end face of described bearing outside and described bearing inner sleeve;
Described supply opening is communicated with described thrust chamber by described initial void.
Preferably, also branch chamber is comprised;
The internal face of described bearing outside is provided with described branch chamber; Described supply opening is communicated with described thrust chamber by described branch chamber.
Preferably, described bearing inner sleeve one end is provided with disk; One side of described disk and one end end face of described bearing outside are fitted; Described thrust chamber is provided with between one side of described disk and one end end face of described bearing outside.
Preferably, between the width of initial void is 0.0001 to 0.01 times of bearing bore diameter.
Preferably, between the race diameter in described thrust chamber is 0.5 to 0.9 times of bearing outside external diameter; Between the inner ring diameter in described thrust chamber is 1.1 to 1.3 times of bearing outside internal diameter.
Preferably, described bearing inner sleeve and described bearing outside adopt pottery to make.
Preferably, described bearing outside adopts carbon to make; Described bearing inner sleeve adopts pottery to make or the outer surface of described bearing inner sleeve is provided with ceramic coating.
Compared with prior art, the present invention has following beneficial effect:
1, the present invention is provided with thrust chamber, initial void, supply opening, not only can balancing axial thrust, can also form liquid film simultaneously, prevent the direct contact friction of Internal and external cycle at the inside and outside inner room of bearing;
2, circumferential bearing and radial bearing are integrated into a bearing by the present invention, and bearing, while balance space flight mechanical pump axial force, achieves the function of radial bearing;
3, bearing inner sleeve and bearing outside operationally not direct friction, there will not be wear-out failure in theory, and this kind of bearing is used for, in the space flight mechanical pump of microgravity environment, owing to not being subject to gravity effect, running more stable.
Accompanying drawing explanation
By reading the detailed description done non-limiting example with reference to the following drawings, other features, objects and advantages of the present invention will become more obvious:
Fig. 1 is a kind of structural representation of the present invention, and section passes through supply opening.
Fig. 2 is the another kind of structural representation of the present invention, and section is by bearing liquid feeding channel.
In figure:
1 is bearing inner sleeve;
2 is bearing outside;
3 is supply opening;
4 is branch chamber;
5 is thrust chamber;
6 is liquid feeding channel.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in detail.Following examples will contribute to those skilled in the art and understand the present invention further, but not limit the present invention in any form.It should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, some distortion and improvement can also be made.These all belong to protection scope of the present invention.
In the present embodiment, combined type hybrid sliding bearing provided by the invention, comprises bearing inner sleeve 1 and bearing outside 2; Wherein, described bearing inner sleeve 1 is arranged in described bearing outside 2; Initial void is provided with between described bearing inner sleeve 1 and described bearing outside; Described bearing outside 2 is provided with supply opening 3; Described supply opening 3 is communicated with described initial void; Thrust chamber 5 is provided with between one end end face of described bearing outside 2 and described bearing inner sleeve 1; Described supply opening 3 is communicated with described thrust chamber 5 by described initial void.Combined type hybrid sliding bearing provided by the invention, also comprises branch chamber 4; The internal face of described bearing outside 2 is provided with described branch chamber 4, for diverted liquid; Described supply opening 3 is communicated with described thrust chamber 5 by described branch chamber 4.Described initial void, for the formation of stable liquid film, plays lubrication and cooling action.In the present embodiment, the middle part of bearing outside 2, arranges a supply opening 3, and between the bearing internal external sleeve of supply opening 3 correspondence, arranges a branch chamber 4, for diverted liquid.
Supply opening 3 for introducing highly pressurised liquid from the zone of high pressure near the outlet of space flight mechanical pump, for combined type hybrid sliding bearing provided by the invention provides can the liquid of balancing machine pump axial force, provide sufficient liquid to produce stable liquid film simultaneously.Branch chamber 4 for being assigned in the whole circumference of combined type hybrid sliding bearing provided by the invention by the uniform liquid introduced from supply opening 3, then is initial void liquid make-up by circumferencial direction.Liquid feeding channel 6 is transported to thrust chamber 5 for introducing liquid liquid from supply opening 33, being simultaneously initial void liquid make-up in bearing from radial direction, guaranteeing that whole Bearing inner bearing internal external sleeve direct friction does not occur because lacking liquid.Thrust chamber 5 is converted into end thrust for the s transported by liquid feeding channel 6, the axial force of balancing machine pump.Liquid, after supply opening 3 is introduced, adds in primary clearance through branch chamber 4, finally flows to thrust chamber 5 by part highly pressurised liquid; Another part highly pressurised liquid directly enters thrust chamber 5 by liquid feeding channel 6, and is primary clearance liquid make-up on the way.
More specifically, described bearing inner sleeve 1 one end is provided with disk; One side of described disk and one end end face of described bearing outside 2 are fitted; Described thrust chamber 5 is provided with between one side of described disk and one end end face of described bearing outside 2.Between the width of initial void is 0.0001 to 0.01 times of bearing bore diameter.Between the race diameter in described thrust chamber 5 is 0.5 to 0.9 times of bearing outside 2 external diameter; Between the inner ring diameter in described thrust chamber 5 is 1.1 to 1.3 times of bearing outside 2 internal diameter.Described bearing inner sleeve 1 and described bearing outside 2 adopt pottery to make.In variation, described bearing outside 2 adopts carbon to make; Described bearing inner sleeve 1 adopts pottery to make or the outer surface of described bearing inner sleeve 1 is provided with ceramic coating.
In the present invention, combined type hybrid sliding bearing can the axial force that produces of balancing machine pump, and the present invention is provided with branch chamber 4 and thrust chamber 5, provides static pressure, on the other hand has relative movement at a high speed between bearing inner sleeve 1 and bearing outside 2, can produce dynamic pressure.Can support rotor in radial direction in the present invention, and the radial force produced when bearing working machine pump, radial bearing is hydrodynamic sliding bearing.
Above specific embodiments of the invention are described.It is to be appreciated that the present invention is not limited to above-mentioned particular implementation, those skilled in the art can make various distortion or amendment within the scope of the claims, and this does not affect flesh and blood of the present invention.
Claims (7)
1. a combined type hybrid sliding bearing, is characterized in that, comprises bearing inner sleeve and bearing outside;
Wherein, described bearing inner sleeve is arranged in described bearing outside; Initial void is provided with between described bearing inner sleeve and described bearing outside;
Described bearing outside is provided with supply opening; Described supply opening is communicated with described initial void; Thrust chamber is provided with between one end end face of described bearing outside and described bearing inner sleeve;
Described supply opening is communicated with described thrust chamber by described initial void.
2. combined type hybrid sliding bearing according to claim 1, is characterized in that, also comprise branch chamber;
The internal face of described bearing outside is provided with described branch chamber; Described supply opening is communicated with described thrust chamber by described branch chamber.
3. combined type hybrid sliding bearing according to claim 1, is characterized in that, described bearing inner sleeve one end is provided with disk; One side of described disk and one end end face of described bearing outside are fitted; Described thrust chamber is provided with between one side of described disk and one end end face of described bearing outside.
4. combined type hybrid sliding bearing according to claim 1, is characterized in that, between the width of initial void is 0.0001 to 0.01 times of bearing bore diameter.
5. combined type hybrid sliding bearing according to claim 1, is characterized in that, between the race diameter in described thrust chamber is 0.5 to 0.9 times of bearing outside external diameter; Between the inner ring diameter in described thrust chamber is 1.1 to 1.3 times of bearing outside internal diameter.
6. combined type hybrid sliding bearing according to claim 1, is characterized in that, described bearing inner sleeve and described bearing outside adopt pottery to make.
7. combined type hybrid sliding bearing according to claim 1, is characterized in that, described bearing outside adopts carbon to make; Described bearing inner sleeve adopts pottery to make or the outer surface of described bearing inner sleeve is provided with ceramic coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510655753.0A CN105240402A (en) | 2015-08-04 | 2015-10-12 | Composite dynamic/static-pressure slide bearing |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510471472 | 2015-08-04 | ||
| CN201510471472X | 2015-08-04 | ||
| CN201510655753.0A CN105240402A (en) | 2015-08-04 | 2015-10-12 | Composite dynamic/static-pressure slide bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105240402A true CN105240402A (en) | 2016-01-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510655753.0A Pending CN105240402A (en) | 2015-08-04 | 2015-10-12 | Composite dynamic/static-pressure slide bearing |
Country Status (1)
| Country | Link |
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| CN (1) | CN105240402A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111075832A (en) * | 2019-11-22 | 2020-04-28 | 中国航发西安动力控制科技有限公司 | Sliding bearing |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2030273U (en) * | 1988-05-09 | 1989-01-04 | 杭州轴承厂 | Shallow-cavity hydrodynamic and hydrostatic fine radial thrust bearing |
| US6361214B1 (en) * | 1999-08-02 | 2002-03-26 | Nidec Corporation | Hydrodynamic-pressure bearing device and motor provided with the hydrodynamic-pressure bearing device |
| JP2006046540A (en) * | 2004-08-05 | 2006-02-16 | Matsushita Electric Ind Co Ltd | Dynamic pressure fluid bearing device |
| CN102278367A (en) * | 2011-06-23 | 2011-12-14 | 中国石油集团川庆钻探工程有限公司井下作业公司 | Biphase heavy-duty thrust bearing |
| CN203114893U (en) * | 2013-03-01 | 2013-08-07 | 河北恒泰瑞欣轴承制造有限公司 | Automobile rear twinbridge supporting bearing |
| CN103336017A (en) * | 2013-06-08 | 2013-10-02 | 原子高科股份有限公司 | Scanning and moving device for tower fault detection |
| CN103343775A (en) * | 2013-07-08 | 2013-10-09 | 上海大学 | Gas bearing integrated by dynamic pressure and static pressure |
-
2015
- 2015-10-12 CN CN201510655753.0A patent/CN105240402A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2030273U (en) * | 1988-05-09 | 1989-01-04 | 杭州轴承厂 | Shallow-cavity hydrodynamic and hydrostatic fine radial thrust bearing |
| US6361214B1 (en) * | 1999-08-02 | 2002-03-26 | Nidec Corporation | Hydrodynamic-pressure bearing device and motor provided with the hydrodynamic-pressure bearing device |
| JP2006046540A (en) * | 2004-08-05 | 2006-02-16 | Matsushita Electric Ind Co Ltd | Dynamic pressure fluid bearing device |
| CN102278367A (en) * | 2011-06-23 | 2011-12-14 | 中国石油集团川庆钻探工程有限公司井下作业公司 | Biphase heavy-duty thrust bearing |
| CN203114893U (en) * | 2013-03-01 | 2013-08-07 | 河北恒泰瑞欣轴承制造有限公司 | Automobile rear twinbridge supporting bearing |
| CN103336017A (en) * | 2013-06-08 | 2013-10-02 | 原子高科股份有限公司 | Scanning and moving device for tower fault detection |
| CN103343775A (en) * | 2013-07-08 | 2013-10-09 | 上海大学 | Gas bearing integrated by dynamic pressure and static pressure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111075832A (en) * | 2019-11-22 | 2020-04-28 | 中国航发西安动力控制科技有限公司 | Sliding bearing |
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Application publication date: 20160113 |
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