CN107869514A - With the special-shaped fixed bush segment thrust slide bearing of physical absorption - Google Patents
With the special-shaped fixed bush segment thrust slide bearing of physical absorption Download PDFInfo
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- CN107869514A CN107869514A CN201711245169.3A CN201711245169A CN107869514A CN 107869514 A CN107869514 A CN 107869514A CN 201711245169 A CN201711245169 A CN 201711245169A CN 107869514 A CN107869514 A CN 107869514A
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- Prior art keywords
- bearing
- fixed bush
- plane
- bush segment
- exercise stress
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/02—Sliding-contact bearings for exclusively rotary movement for radial load only
- F16C17/028—Sliding-contact bearings for exclusively rotary movement for radial load only with fixed wedges to generate hydrodynamic pressure, e.g. multi-lobe bearings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
- F16C33/10—Construction relative to lubrication
- F16C33/1025—Construction relative to lubrication with liquid, e.g. oil, as lubricant
Abstract
The present invention relates to a kind of special-shaped fixed bush segment thrust slide bearing with physical absorption, including one piece of fixed bush segment and one piece of exercise stress, the span of the angle theta between fixed bush segment working surface and exercise stress working surface to be：1.0×10‑7°≤θ≤1.0×10‑4°, the wedge gap of diverging is formed between fixed bush segment and exercise stress, the exercise stress direction of motion is that the big end of this wedge gap is pointed to from the small end of this wedge gap.In bearing of the present invention, the oleophylic coating with stronger physical absorption ability is coated with inlet region stationary contact surface, and it is coated with outlet area stationary contact surface and hates oil coating with weaker physical absorption ability, oil film thickness is in 1nm magnitudes, so that the physical absorption between lubricating oil film and bearing surface plays a role.Bearing of the present invention has certain bearing capacity, has important application in micromachine and precision optical machinery.
Description
Technical field
The present invention relates to field of bearings, specifically a kind of special-shaped fixed bush segment thrust sliding axle with physical absorption
Hold.
Background technology
Bearing is the important mechanical part for supporting axial workpiece.Mainly it is divided to two kinds of sliding bearing and rolling bearing.It is right
There are following main performance requirements in bearing：Support accuracy, support stiffness, low-friction coefficient and wear-resistant.This requires that bearing is
A kind of very accurate mechanical part, also require that it has sufficiently large bearing capacity.For the antifriction reached and anti-wear performance, go back
Need bearing that there is preferable greasy property.It is developed so far, although bearing technology comparative maturity, establishes in traditional lubrication
In theoretical foundation.At present, rolling bearing and sliding bearing are respectively applied to different occasions, respectively there is its advantage.Due to the present invention relates to
Be sliding bearing, now existing sliding bearing type and technology are summarized as follows：
From lubrication mechanism, sliding bearing is divided into two kinds of mixed film friction sliding bearing and fluid lubrication sliding bearing.The former
Lubrication is realized by border adsorbed film and hydrodynamic effect, for low speed, underloading and inessential occasion；The latter relies on fluid film
Lubrication is realized, it is more extensive for important events, application.Fluid lubrication sliding bearing is the main body of sliding bearing, is divided into stream again
Two kinds of body hydrodynamic lubrication sliding bearing and hydrostatic lubrication sliding bearing.Hydrostatic lubrication sliding bearing relies on extraneous hydraulic pressure
System fuel feeding, by oil lift load, it is lubricated by hydraulic oil, the accuracy of manufacture is high, structure is more complicated, cost is higher, is used for
It is required that support stiffness is big, support accuracy is high and the important events of large carrying capacity.Hydrldynamic pressure lubrication sliding bearing relies on fluid
Dynamic pressure effect realizes lubrication, has structure compared with the advantages of simple, cost is relatively low, better performances, be a kind of application it is more extensive with
Common sliding bearing.It is divided into hydrldynamic pressure lubrication radial plain bearing and hydrldynamic pressure lubrication thrust slide bearing two again
Kind.The former is used to support radial load, and the latter is used to support axial load.Existing main fluid hydrodynamic lubrication thrust introduced below
Sliding bearing type and its feature.
First, clinoplain segmental bearing, this bearing are as shown in Figure 1.It is relied between the convergence formed between two surfaces up and down
Hydrodynamic effect is realized in relative motion between gap and the two surfaces, so as to realize lubrication.This bearing has larger carrying energy
Power, there are preferable antifriction and anti-wear performance.
This bearing is divided into two kinds, it is a kind of be upper and lower surface can not around the fixed bush segment bearing of fulcrum,
Another kind is that one of surface can be around the tilting pad bearing of fulcrum.Under good design, tilting pad bearing is than solid
Determining segmental bearing has bigger bearing capacity.
2nd, zigzag segmental bearing, this bearing are as shown in Figure 2.Its work and lubrication mechanism is same as above a kind of bearing.
Its bearing capacity is more much lower than a kind of upper bearing under the same terms.
3rd, ramp platform segmental bearing, this bearing are as shown in Figure 3.Its work and lubrication mechanism is same as above two kinds of bearings.
Its maximum bearing capacity is higher by 20% than the maximum bearing capacity of clinoplain fixed bush segment bearing under identical operating mode.
4th, Rayleigh ladder bearing, this bearing are as shown in Figure 4.Its same spherical bearing of work and lubrication mechanism.Compared to
Above three kinds of bearings, its maximum bearing capacity highest under identical operating mode, than the maximum carrying of clinoplain fixed bush segment bearing
Amount is higher by 28%.
According to conventional fluid lubrication theory, traditional bearing shown in Fig. 1-Fig. 4 all relies on the convergence formed between two surfaces of solids
Wedge gap, under moving surface drive, lubricating oil is seen in from the heavy in section of convergent wedge-shaped gap, is taken out of from its small bore
Come, so that lubricating oil is squeezed in convergent wedge-shaped gap and then produces oil pressure, lubricating oil film just possesses bearing capacity, from
And form hydrldynamic pressure lubrication bearing.According to conventional fluid lubrication theory, in the diverging wedge gap formed between two surfaces of solids
Hydrldynamic pressure lubrication oil film is not likely to form, at this moment is impossible to form bearing.Because now under moving surface drive,
The small bore of lubricating oil from diverging wedge gap is seen in, and is brought out from its heavy in section, and such lubricating oil is in diverging wedge
It would not be squeezed in shape gap, would not also produce oil pressure, not possess bearing capacity, it is impossible to form lubricating oil film.
The content of the invention
It is an object of the invention to provide a kind of special-shaped fixed bush segment thrust slide bearing with physical absorption.With conventional flow
Body lubrication theory is runed counter to, and the wedge gap of diverging is formed between this contact of bearing two surface.Pushed away with traditional fixed bush segment shown in Fig. 1
Power sliding bearing is on the contrary, the surface gap in this bearing inlets area is less than the surface gap of its outlet area.According to conventional fluid
Lubrication theory, this bearing should be it is invalid because lubricating oil from diverging wedge gap small bore see in, and from it
Heavy in section be brought out, lubricating oil is not extruded in such gap, cannot also form oil pressure, does not possess carrying energy
Power.But applied if being coated with the oleophylic with stronger physical absorption ability on the stationary contact surface in this bearing inlets area
Layer, and be coated with the outlet area stationary contact surface of this bearing and hate oil coating with weaker physical absorption ability, when this axle
When two surface gaps held are in 1nm magnitudes, because the stationary contact surface of this bearing inlets area and outlet area is to lubricating oil
Different physisorptions, the flow of lubrication that this bearing inlets area small bore is flowed under moving surface drive are big on the contrary
In the outflow heavy in section flow of lubrication of outlet area, so that lubricating oil also can be by crowded in such diverging wedge gap
It is pressed into and produces oil pressure, lubricating oil film just possesses bearing capacity.Thus form the signified special-shaped fixed bush segment thrust of the present invention
Sliding bearing.
The present invention, only with physical adsorption techniques, is achieved that tool under the wedge gap for the diverging that traditional bearing is abstained from
There is the special-shaped fixed bush segment thrust slide bearing of certain bearing capacity, technically, the present invention has prominent progress and creation
Property.Bearing of the present invention has the advantages of easy to manufacture, simple in construction, cost is cheap.
The present invention technical solution be：
A kind of special-shaped fixed bush segment thrust slide bearing with physical absorption, such as Fig. 5, including one piece of fixed bush segment (1),
Fixed bush segment (1) working surface includes plane A (2) and plane C (6), and plane A (2) is oleophylic coating surface, and plane C (6) is to hate
Oil coating surface；Another to have one piece of exercise stress (4) with plane B (3), plane B (3) physical adsorption characteristic is identical everywhere,
Plane B (3) is the coating surface on the natural surface or exercise stress (4) of exercise stress (4).Make exercise stress (4) with consolidating
Determine tile fragment (1) pairing, the inclination angle of fixed bush segment (1) is the plane A (2) of fixed bush segment (1) and the plane B (3) of exercise stress (4)
Between angle be θ, θ span is：1.0×10-7°≤θ≤1.0×10-4°.Fixed bush segment (1) and exercise stress (4)
Between be formed wedge gap, be full of lubricating oil (5) in this wedge gap, gap width at the big end of this wedge gap
Lubricating oil (5) film thickness is h i.e. at bearing outleto, hoIn 1nm magnitudes, exercise stress (4) relative to fixed bush segment (1) fortune
Dynamic direction is the big end that this wedge gap is pointed to by the small end of this wedge gap.Material is thus formed the different of meaning of the invention
Shape fixed bush segment thrust slide bearing.
Further, the plane A (2) of fixed bush segment (1) is coating of titanium dioxide surface, and plane C (6) is fluororine-carbon coating table
Face, the plane B (3) of exercise stress (4) are the natural surface of exercise stress (4).
The beneficial effects of the invention are as follows：
The present invention uses physical adsorption techniques, designs a kind of special-shaped fixed bush segment thrust using surface coating method and slides
Bearing.Bearing of the present invention is applied to the occasion that bearing inlets area surface gap is less than bearing outlet area surface gap, and this is tradition
Fixed bush segment thrust slide bearing does not reach.Bearing of the present invention has certain bearing capacity, has good lubricating oil film,
Preferable anti-friction wear-resistant effect can be played, is used as support member on precision optical machinery or microminiature plant equipment.
The present invention has advantages below：
(1) bearing of the present invention is applied to the occasion that bearing inlets area surface gap is less than bearing outlet area surface gap.
(2) bearing of the present invention contains good lubricating oil film, has good properties of antifriction and wear resistance, has certain carrying energy
Power.
(3) bearing arrangement of the present invention is simple, easy to manufacture, and cost is cheap.
Brief description of the drawings
Fig. 1 is the structural representation of existing clinoplain segmental bearing；
Fig. 2 is the structural representation of existing zigzag segmental bearing；
Fig. 3 is the structural representation of existing ramp platform segmental bearing；
Fig. 4 is the structural representation of existing Rayleigh ladder bearing；
Fig. 5 is structural representation of the embodiment of the present invention with the special-shaped fixed bush segment thrust slide bearing of physical absorption；
Fig. 6 is the distribution of the dimensionless pressure (P) in embodiment in bearing of the present invention；
Fig. 7 be fixed bush segments (1) different in embodiment inclination angle theta under bearing of the present invention dimensionless bearing capacity (W)；
Fig. 8 is the dimensionless bearing capacity (W) and axle of bearing of the present invention under the inclination angle theta of different fixed bush segments (1) in embodiment
Hold exit lubricating oil (5) film thickness hoRelation curve.
Wherein, u is exercise stress relative to the movement velocity of fixed bush segment, w：The load of contact unit length upper bearing (metal) supporting
Lotus, hoFor lubricating oil at bearing outlet (5) film thickness, l1For the width of plane A (2), l2For the width of plane C (6), θ is fixation
The inclination angle of tile fragment (1) is the angle between the plane A (2) of fixed bush segment (1) and the plane B (3) of exercise stress (4)；Two plates
Between gap in be full of lubricating oil, plane A (2) is oleophylic coating surface, and plane C (6) is to hate oil coating surface, plane B (3)
Physical adsorption characteristic it is identical everywhere.
In Fig. 5：1- fixed bush segments, 2- planes A, 3- plane B, 4- exercise stress, 5- lubricating oil, 6- planes C
Embodiment
The preferred embodiment that the invention will now be described in detail with reference to the accompanying drawings.
Embodiment
A kind of special-shaped fixed bush segment thrust slide bearing with physical absorption, such as Fig. 5, including one piece of fixed bush segment (1),
Fixed bush segment (1) working surface includes plane A (2) and plane C (6), and plane A (2) is oleophylic coating surface, and plane C (6) is to hate
Oil coating surface；Another to have one piece of exercise stress (4) with plane B (3), plane B (3) physical adsorption characteristic is identical everywhere,
Plane B (3) is the coating surface on the natural surface or exercise stress (4) of exercise stress (4).Make exercise stress (4) with consolidating
Determine tile fragment (1) pairing, the inclination angle of fixed bush segment (1) is the plane A (2) of fixed bush segment (1) and the plane B (3) of exercise stress (4)
Between angle be θ, θ span is：1.0×10-7°≤θ≤1.0×10-4°.Fixed bush segment (1) and exercise stress (4)
Between be formed wedge gap, be full of lubricating oil (5) in this wedge gap, gap width at the big end of this wedge gap
Lubricating oil (5) film thickness is h i.e. at bearing outleto, hoIn 1nm magnitudes, exercise stress (4) relative to fixed bush segment (1) fortune
Dynamic direction is the big end that this wedge gap is pointed to by the small end of this wedge gap.Material is thus formed the different of meaning of the invention
Shape fixed bush segment thrust slide bearing.
Bearing of the present invention is applied to the occasion that bearing inlets area surface gap is less than bearing outlet area surface gap, and this is to pass
System fixed bush segment thrust slide bearing does not reach.Bearing of the present invention has certain bearing capacity, has good lubricating oil
Film, preferable anti-friction wear-resistant effect can be played, be used as support member on precision optical machinery or microminiature plant equipment.
In embodiment, this kind by fixed bush segment (1) and is transported with the special-shaped fixed bush segment thrust slide bearing of physical absorption
Dynamic flat board (4) forms this bearing, and two boards block is made up of various trade mark steel, but is not excluded for being made using other materials.This kind
With the special-shaped fixed bush segment thrust slide bearing of physical absorption, the inclination angle of fixed bush segment (1) is the plane A of fixed bush segment (1)
(2) angle between the plane B (3) of exercise stress (4) is θ, and θ span is：1.0×10-7°≤θ≤1.0×10-4°；Wedge gap is formed between fixed bush segment (1) and exercise stress (4), the small end of this wedge gap is bearing inlets
End, the big end of this wedge gap is bearing outlet end, and exercise stress (4) is served as reasons relative to the direction of motion of fixed bush segment (1)
The small end of this wedge gap points to the big end of this wedge gap, such as Fig. 5；Plane A (2) is oleophylic coating surface, plane C
(6) to hate oil coating surface, plane B (3) physical adsorption characteristic is identical everywhere, and plane B (3) is the nature of exercise stress (4)
Coating surface on surface or exercise stress (4).
Fig. 5 provides the structural representation of embodiment bearing.In Fig. 5, u is exercise stress (4) relative to fixed bush segment (1)
Movement velocity, w：The load of contact unit length upper bearing (metal) supporting, hoFor lubricating oil at bearing outlet (5) film thickness, l1For plane
A (2) width, l2For the width of plane C (6), θ is that the inclination angle of fixed bush segment (1) is the plane A (2) and fortune of fixed bush segment (1)
Angle between the plane B (3) of dynamic flat board (4)；Lubricating oil (5) is full of in gap between two plates, plane A (2) is oleophylic
Coating surface, plane C (6) are to hate oil coating surface, and plane B (3) physical adsorption characteristic is identical everywhere.
This kind with physical absorption special-shaped fixed bush segment thrust slide bearing, make fixed bush segment (1) plane A (2) and
Angle between the plane B (3) of exercise stress (4) is θ, and θ span is：1.0×10-7°≤θ≤1.0×10-4°.Motion
Flat board (4) is slided with speed u relative to fixed bush segment (1), and speed u direction is the outlet that bearing is pointed to by the arrival end of bearing
End, such as Fig. 5.
Compared with conventional fluid hydrodynamic lubrication fixed bush segment thrust slide bearing, bearing of the present invention has substantive change in structure
Change, it uses the wedge gap dissipated between bearing surface, breaches the forbidden zone of conventional lubrication technology, realizes lubricating oil film profit
It is sliding, there is certain bearing capacity.Bearing mnanufacture of the present invention is easy, and cost is cheap, has good lubrication, antifriction, anti-wear performance,
Suitable for specific occasion.Therefore, the technical advantage of bearing of the present invention and application value are fairly obvious.
In embodiment, exercise stress (4) and fixed bush segment (1) are steel manufacture, the plane A (2) of fixed bush segment (1) and
Plane C (6) is coating surface, and plane A (2) is (oleophylic) coating of titanium dioxide surface, and plane C (6) is (hating oil) fluorine
Carbon coated surface, the plane B (3) of exercise stress (4) are the natural surface of exercise stress (4), and lubricating oil (5) is domestic No. 30 machines
Oil, dynamic viscosity is η=0.01Pas when the lubricating oil works, and the movement velocity of exercise stress (4) is u=0.0001m/s：
(1) when the inclination angle theta of fixed bush segment (1) is：θ=1.0 × 10-4°, l1=l2=0.006mm, hoDuring=3.0nm, obtain
The bearing Load Per Unit Length of the present invention arrived is w=3.5N/m, now the counted loading ability of bearing of conventional fluid lubrication theory
Measure as wconv=0N/m.
(2) when the inclination angle theta of fixed bush segment (1) is：θ=1.0 × 10-5°, l1=I2=0.006mm, hoDuring=3.0nm, obtain
The bearing Load Per Unit Length of the present invention arrived is w=7.6N/m, now the counted loading ability of bearing of conventional fluid lubrication theory
Measure as wconv=0N/m.
(3) when the inclination angle theta of fixed bush segment (1) is：θ=1 × 10-6°, l1=l2=0.006mm, hoDuring=3.0nm, obtain
Bearing Load Per Unit Length of the present invention be w=8.0N/m, now counted bearing load carrying capacity of conventional fluid lubrication theory
For wconv=0N/m.
(4) when the inclination angle theta of fixed bush segment (1) is：θ=1 × 10-7°, l1=l2=0.006mm, hoDuring=3.0nm, obtain
Bearing Load Per Unit Length of the present invention be w=8.02N/m, now counted bearing load carrying capacity of conventional fluid lubrication theory
For wconv=0N/m.
(5) when the inclination angle theta of fixed bush segment (1) is：θ=1.0 × 10-5°, l1=l2=0.012mm, hoDuring=6.0nm, obtain
The bearing Load Per Unit Length of the present invention arrived is w=5.6N/m, now the counted loading ability of bearing of conventional fluid lubrication theory
Measure as wconv=0N/m.
(6) when the inclination angle theta of fixed bush segment (1) is：θ=1.0 × 10-5°, l1=l2=0.018mm, hoDuring=9.0nm, obtain
The bearing Load Per Unit Length of the present invention arrived is w=3.6N/m, now the counted loading ability of bearing of conventional fluid lubrication theory
Measure as wconv=0N/m.
Find out from embodiment, bearing of the present invention has certain bearing capacity, applied to precision equipment or microminiature equipment
On, it is competent at specific workplace, solves the indeterminable technical problem of plain bearing.
The principle of the invention is described as follows：
It is theoretical according to the Interfacial Adsorption established in the past, because bearing inlets area of the present invention (i.e. lubricates corresponding to plane A (2)
Physical absorption intensity in region, as shown in Figure 5) between the plane A (2) of lubricating oil (5) and fixed bush segment (1) is more than outlet area
Thing in (regions of lubrication i.e. corresponding to plane C (6), as shown in Figure 5) between the plane C (6) of lubricating oil (5) and fixed bush segment (1)
Adsorption strength is managed, when the inclination angle theta of fixed bush segment (1) is smaller, is less than even in inlet region middle (center) bearing surface gap in outlet area
Under bearing surface clearance condition, because lubricating oil (5) in the different of plane A (2) and plane C (6) adsorbed, oriented in order and solid
Change acts on, and lubricating oil (5) mass flow is (i.e. as caused by the motion of bearing movable flat board (4) surface draw in this bearing inlets area
Lubricating oil (5) Couette traffic flows) it is more than in bearing outlet area as caused by the motion of bearing movable flat board (4) surface draw
Lubricating oil (5) mass flow, because lubricating oil (5) flows to outlet area from inlet region in bearing of the present invention, if two plates of this bearing
Non lubricant oil (5) film pressure is established in block gap, then the lubricating oil (5) as caused by the motion of bearing movable flat board (4) surface draw
Flowing makes lubricating oil (5), and constantly convergence forms extruding so as to form oil pressure i.e. lubrication pressure in two plate interspaces of this bearing,
That is, can necessarily form lubricating oil (5) film pressure in this bearing, lubricating oil (5) film pressure of formation makes lubricating oil (5)
Pressure gradient flow (i.e. Poiseuille flowings) is produced, the pressure gradient flow of lubricating oil (5) makes to flow through two plate interspaces
Lubricating oil (5) mass flow is equal everywhere, so as to meet lubricating oil (5) flowing continuity.Here it is the principle of the present invention.
When exercise stress (4) and fixed bush segment (1) are steel manufacture, the plane A (2) of fixed bush segment (1) is (oleophylic
) coating of titanium dioxide surface, the plane C (6) of fixed bush segment (1) is (hating oil) fluororine-carbon coating surface, exercise stress (4)
Plane B (3) is the natural surface of exercise stress (4), and lubricating oil (5) is domestic No. 30 machine oil, and the inclination angle theta of fixed bush segment (1) is：
θ=1.0 × 10-5°, l1=l2=0.006mm, hoDuring=3.0nm, Fig. 6 provides the dimensionless pressure (P) in bearing of the present invention
Distribution.Herein, P=pho/ (u η), p are that (unit is for (dimension) lubricating oil (5) film pressure in bearing of the present invention：Pa), u is this
For the exercise stress (4) of invention bearing relative to the movement velocity of fixed bush segment (1), η is that power when lubricating oil (5) works glues
Degree, hoFor lubricating oil (5) film thickness at bearing outlet of the present invention.As can be seen from Figure 6, bearing interior energy of the present invention establishes considerable lubrication
Oily (5) film pressure, therefore this bearing has certain bearing capacity.
When exercise stress (4) and fixed bush segment (1) are steel manufacture, the plane A (2) of fixed bush segment (1) is (oleophylic
) coating of titanium dioxide surface, the plane C (6) of fixed bush segment (1) is (hating oil) fluororine-carbon coating surface, exercise stress (4)
Plane B (3) is the natural surface of exercise stress (4), and lubricating oil (5) is domestic No. 30 machine oil, l1=l2=0.006mm, ho=
During 3.0nm, Fig. 7 provides the dimensionless bearing capacity (W) of bearing of the present invention under the inclination angle theta of different fixed bush segments (1).Herein, W=
W/ (u η), w are that (the load line density of bearing i.e. of the present invention, unit are for the load born in bearing contact unit length of the present invention：
N/m), u be bearing of the present invention exercise stress (4) relative to fixed bush segment (1) movement velocity, η be lubricating oil (5) work when
Dynamic viscosity.As can be seen from Figure 7, when 1.0 × 10-7°≤θ≤1.0×10-4°When, the bearing capacity of bearing of the present invention is considerable.
When exercise stress (4) and fixed bush segment (1) are steel manufacture, the plane A (2) of fixed bush segment (1) is (oleophylic
) coating of titanium dioxide surface, the plane C (6) of fixed bush segment (1) is (hating oil) fluororine-carbon coating surface, exercise stress (4)
Plane B (3) is the natural surface of exercise stress (4), and lubricating oil (5) is domestic No. 30 machine oil, ho/(l1+l2)=2 × 10-4When,
Fig. 8 provides the dimensionless bearing capacity (W) of bearing of the present invention and lubricating oil at bearing outlet under the inclination angle thetas of different fixed bush segments (1)
(5) film thickness hoRelation curve.Herein, W definition is identical with the definition of the W in Fig. 7.As can be seen from Figure 8, when 1.0 × 10-7°
≤θ≤1.0×10-4°And hoDuring in 1nm magnitudes, the bearing capacity of bearing of the present invention is considerable.
Claims (3)
1. a kind of special-shaped fixed bush segment thrust slide bearing with physical absorption, including one piece of fixed bush segment (1), fixed bush segment
(1) working surface includes plane A (2) and plane C (6), separately has one piece of exercise stress (4) with plane B (3), puts down motion
Plate (4) matches with fixed bush segment (1), and the inclination angle of fixed bush segment (1) is the plane A (2) and exercise stress (4) of fixed bush segment (1)
Plane B (3) between angle be θ, form wedge gap between fixed bush segment (1) and exercise stress (4), this wedge shape
Lubricating oil (5) is full of in gap, gap width is that lubricating oil at bearing outlet (5) film thickness is at the big end of this wedge gap
h0, exercise stress (4) is to be pointed to by the small end of this wedge gap between this wedge shape relative to the direction of motion of fixed bush segment (1)
The big end of gap, it is characterised in that：θ span is：1.0×10-7°≤θ≤1.0×10-4°, h0In 1nm magnitudes, plane A
(2) it is oleophylic coating surface, plane C (6) is to hate oil coating surface, and plane B (3) physical adsorption characteristic is identical everywhere.
2. the special-shaped fixed bush segment thrust slide bearing of physical absorption is used as claimed in claim 1, it is characterised in that：Plane
B (3) is the coating surface on the natural surface or exercise stress (4) of exercise stress (4).
3. the special-shaped fixed bush segment thrust slide bearing of physical absorption is used as claimed in claim 1, it is characterised in that：It is fixed
The plane A (2) of tile fragment (1) is coating of titanium dioxide surface, and plane C (6) is fluororine-carbon coating surface.
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| CN201711245169.3A CN107869514A (en) | 2017-11-21 | 2017-11-21 | With the special-shaped fixed bush segment thrust slide bearing of physical absorption |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711245169.3A CN107869514A (en) | 2017-11-21 | 2017-11-21 | With the special-shaped fixed bush segment thrust slide bearing of physical absorption |
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| CN201711245169.3A Pending CN107869514A (en) | 2017-11-21 | 2017-11-21 | With the special-shaped fixed bush segment thrust slide bearing of physical absorption |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108916213A (en) * | 2018-06-29 | 2018-11-30 | 张美华 | All there is the special-shaped clinoplain fixed bush segment thrust slide bearing of interface sliding at entire static surface |
| CN109139683A (en) * | 2018-09-05 | 2019-01-04 | 张美华 | With the special-shaped ramp platform thrust slide bearing of physical absorption |
| CN110594288A (en) * | 2019-09-29 | 2019-12-20 | 中国矿业大学 | Magnetic control flexible tile thrust sliding bearing based on nano magnetic liquid |
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| CN110594288A (en) * | 2019-09-29 | 2019-12-20 | 中国矿业大学 | Magnetic control flexible tile thrust sliding bearing based on nano magnetic liquid |
| CN110594288B (en) * | 2019-09-29 | 2024-03-08 | 中国矿业大学 | Magnetic control flexible tile thrust sliding bearing based on nano magnetic liquid |
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