CN203627520U - Sliding bearing capable of generating distributed heat to achieve wedge-shaped dynamic-pressure lubrication - Google Patents

Abstract

The utility model discloses a sliding bearing capable of generating distributed heat to achieve wedge-shaped dynamic-pressure lubrication. The sliding bearing comprises a bearing base, a plurality of circular support pillars and a bearing bush; for a radial sliding bearing, the bearing base and the bearing bush are connected by a plurality of circular support pillars, and the plurality of circular support pillars are circularly distributed on the outer surface of the bearing bush; and for a sliding thrust bearing, round holes are uniformly processed on the bearing base, the circular support pillars are arranged in the round holes, and the bearing bush is fixed on the surfaces of the bearing base and the circular support pillars. According to the sliding bearing, friction heat generated during working of the bearing can cause the circular support pillars to be thermally expanded, so that the bearing bush is extruded to form bulges on the surface and a plurality of wedge-shaped convergence clearances are formed on the surface of the shaft neck, therefore, the dynamic-pressure lubricating effect is improved, and the bearing capacity of the bearing is improved, and the service life of the bearing is; when the circular support pillars are heated and expanded, the bulges distributed uniformly are formed on the surface of the bearing bush; and the wedge-shaped convergence clearance can achieve lubrication in left and right directions, and the application range of the bearing is expanded.

Description

A kind of sliding bearing that can produce distributed heat wedge shape hydrodynamic lubrication

Technical field

The utility model relates to a kind of hydrodynamic lubrication sliding bearing, especially relates to a kind of sliding bearing that can produce distributed heat wedge shape hydrodynamic lubrication.

Background technique

Sliding bearing is under hydrodynamic lubrication condition, and the lubricated oil content of journal surface and bearing shell surface is opened, thereby can directly not contact, and can reduce greatly like this friction and wear between two surfaces.It is that journal surface and bearing shell surface need to form wedge shape convergence gap that sliding bearing forms one of condition of hydrodynamic lubrication.The reynolds equation of sliding bearing lubricating, as shown in (1) formula.In existing general sliding bearing, between axle journal and bearing shell, can only form one or a minority wedge shape convergence gap, dynamic lubrication effect is limited, and bearing drag is large, quick abrasion, bearing life is short.By increasing wedge shape convergence gap number between two surfaces, can improve hydrodynamic lubrication effect, thereby improve bearing capacity and the working life of bearing.

$\frac{1}{R}\frac{\∂}{\∂\mathrm{\θ}}\left({\mathrm{\φ}}_x\frac{{\mathrm{\ρh}}^3}{\mathrm{\μR}}\frac{\∂P}{\∂\mathrm{\θ}}\right)+\frac{\∂}{\∂z}\left({\mathrm{\φ}}_y\frac{{\mathrm{\ρh}}^3}{\mathrm{\μ}}\frac{\∂P}{\∂z}\right)=6\mathrm{\ω}\frac{\∂\left({\mathrm{\φ}}_u\mathrm{\ρh}\right)}{\∂\mathrm{\θ}}---\left(1\right)$

$\mathrm{Elord}:{\mathrm{\φ}}_x=1+3{\left(\frac{\mathrm{\σ}}{h}\right)}^2\frac{{\mathrm{\γ}}^2-2-\frac{6\mathrm{\γ}}{\mathrm{\π}}\ln \mathrm{\γ}}{{\mathrm{\γ}}^2+1}$

$\mathrm{Tripp}:{\mathrm{\φ}}_x=1+3{\left(\frac{\mathrm{\σ}}{h}\right)}^2\frac{\mathrm{\γ}-2}{\mathrm{\γ}+1}$

$\mathrm{Tonder}:{\mathrm{\φ}}_x=1+3{\left(\frac{\mathrm{\σ}}{h}\right)}^2\frac{{\mathrm{\γ}}^2-2}{{\mathrm{\γ}}^2+1}$

φ _y＝φ _x(1/γ)

${\mathrm{\φ}}_u=1-3{\left(\frac{\mathrm{\σ}}{h}\right)}^2\frac{1}{{\mathrm{\γ}}^2+1}$

In formula (1), θ-circumferencial direction angular coordinates; Z-axial coordinate; R-radial coordinate; H-oil slick thickness; R-axle journal radius; P-oil film pressure; ρ-lubricant oil density; μ-lubricant oil kinetic viscosity; ω-journal angle speed; φ _xwith φ _ybe respectively circumferencial direction and axial pressure flow factor; φ _ufor circumferencial direction shear flow factor.

Summary of the invention

In order to solve, surface friction drag in background technique is large, the problem of quick abrasion, and the purpose of this utility model is to provide a kind of sliding bearing that can produce distributed heat wedge shape hydrodynamic lubrication.

The technical solution adopted in the utility model is:

One, a kind of sliding bearing that can produce distributed heat wedge shape hydrodynamic lubrication:

The utility model comprises bearing base, multiple circular pillar and bearing shell that diameter is identical; Between bearing base and bearing shell, connect by multiple circular pillars, multiple circular pillars to be circle distribution, are full of oiling agent between axle journal and inner surface of bearing bush at bearing shell outer surface.

Described multiple circular pillar is circle distribution at bearing shell outer surface, and the axis of its circular pillar is by central angle distributions such as the bearing shell center of circle are, and it is distributed as single or double form.

Two, another kind can produce the sliding bearing of distributed heat wedge shape hydrodynamic lubrication:

The utility model comprises bearing base, multiple circular pillar and bearing shell that diameter is identical; On bearing base, have the circular hole that equally distributed diameter is identical, circular pillar is all installed in each circular hole, bearing shell is fixed on bearing base and circular pillar surface, between bearing shell and diameter of axle surface, is full of oiling agent.

On described bearing base, have the circular hole that equally distributed diameter is identical, its center of circular hole axis is that rotating center is circle distribution, and round hole axial is parallel with bearing centre axis.

The circular pillar of above two kinds of sliding bearings all adopts thermal expansion and the larger copper product of heat conductivity, is HSn62-1, HFe59-1-1 or QMn5; Cylinder diameter is 5～20mm, and circular pillar quantity is 6～500.

The beneficial effect the utlity model has is:

1, the utility model utilizes the frictional heat producing in bearing working process to cause circular pillar to produce thermal expansion, extruding bearing shell, cause bearing shell surface to produce projection, can form multiple wedge shape convergences gap with journal surface, strengthen hydrodynamic lubrication effect, thereby improve bearing capacity and the working life of bearing.

2, for radial sliding bearing, circular pillar is circle distribution at bearing shell outer surface, and when circular pillar expanded by heating, inner surface of bearing bush can form the projection that is circle distribution, form with journal surface the convergence gap that is circle distribution, strengthen the hydrodynamic lubrication bearing capacity of bearing.

3,, for thrust slide bearing, the circular pillar expanded by heating in bearing matrix, makes bearing shell surface produce the projection that is circle distribution, between projection and projection, forms convergence gap between projection and axle journal.

4, it is lubricated that bearing left and right two directions can be realized in wedge shape convergence gap, increases bearing Applicable scope.

Accompanying drawing explanation

Structural representation when Fig. 1 is the work of distributed heat wedge shape hydrodynamic lubrication radial sliding bearing.

Sectional view when Fig. 2 is the work of distributed heat wedge shape hydrodynamic lubrication thrust slide bearing.

Fig. 3 is the graphics before the work of distributed wedge shape hydrodynamic lubrication radial sliding bearing.

Graphics when Fig. 4 is distributed wedge shape hydrodynamic lubrication radial sliding bearing work.

Fig. 5 is the graphics of double-row circular pillar radial sliding bearing.

Fig. 6 is distributed heat wedge shape hydrodynamic lubrication thrust slide bearing graphics.

Wherein: 1, radial sliding bearing bearing base, 2, the circular pillar of radial sliding bearing, 3, radial sliding bearing bearing shell, 4, projection, 5, oiling agent, 6, radial sliding bearing axle journal, 7, thrust slide bearing axle journal, 8, thrust slide bearing bearing shell, 9, the circular pillar of thrust slide bearing, 10, thrust slide bearing bearing base.

Embodiment

Below in conjunction with drawings and Examples, the utility model is further described.

As shown in Figure 1, the structural representation while being a kind of distributed heat wedge shape hydrodynamic lubrication radial sliding bearing work.Distributed heat wedge shape hydrodynamic lubrication radial sliding bearing, comprises radial sliding bearing bearing base 1, the circular pillars 2 of measure-alike multiple radial sliding bearings and radial sliding bearing bearing shell 3; Between radial sliding bearing bearing base 1 and radial sliding bearing bearing shell 3, connect by multiple circular pillars 2, multiple circular pillars 2 are circle distribution at bearing shell 3 outer surfaces, the axis that is the circular pillars 2 of multiple radial sliding bearings is and is waited central angle distribution by radial sliding bearing bearing shell 3 centers of circle, between radial sliding bearing axle journal 6 and radial sliding bearing bearing shell 3 internal surfaces, is full of oiling agent 5.

The circular pillar 2 of described multiple radial sliding bearing is circle distribution at radial sliding bearing bearing shell 3 outer surfaces, the axis of the circular pillar 2 of its radial sliding bearing is by central angle distributions such as radial sliding bearing bearing shell 3 centers of circle are, it is distributed as single or double form, is illustrated in figure 5 double form.

As shown in Figure 2, the structural representation while being another kind of distributed heat wedge shape hydrodynamic lubrication radial sliding bearing work.Distributed heat wedge shape hydrodynamic lubrication thrust slide bearing, comprise thrust slide bearing bearing shell 8, the circular pillar 9 of thrust slide bearing and thrust slide bearing bearing base 10, on thrust slide bearing bearing base 10, have measure-alike equally distributed circular hole, round hole axial is parallel with bearing centre axis, the circular pillar 9 of thrust slide bearing is installed in hole, it is upper with the circular pillar of thrust slide bearing 9 surfaces that thrust slide bearing bearing shell 8 is fixed on thrust slide bearing bearing base 10, between thrust slide bearing bearing shell 8 and the thrust slide bearing diameter of axle 7 surfaces, is full of oiling agent

On described thrust slide bearing bearing base 10, have the circular hole that equally distributed diameter is identical, its center of circular hole axis is that rotating center is circle distribution, and round hole axial is parallel with thrust slide bearing central axis.

The circular pillar of above two kinds of sliding bearings all adopts thermal expansion and the larger copper product of heat conductivity, is HSn62-1, HFe59-1-1 or QMn5; Cylinder diameter is 5～20mm, and circular pillar quantity is 6～500.

As shown in Figure 3, be the graphics before the work of distributed heat wedge shape hydrodynamic lubrication radial sliding bearing, radial sliding bearing inner surface of bearing bush is arc-shaped surface, the effect of the circular pillar 2 of radial sliding bearing is to support radial sliding bearing bearing shell 3.

As shown in Figure 4, graphics while being the work of distributed heat wedge shape hydrodynamic lubrication radial sliding bearing, distributing at radial sliding bearing inner surface of bearing bush circumferencial direction a series of protruding 4, these projections 4 form multiple wedge shapes convergences gap with radial sliding bearing axle journal 6 surfaces.

As shown in Figure 5, be the graphics of double-row circular pillar radial sliding bearing, described radial sliding bearing can adopt double-row circular shore supports bearing bush, can obtain so better hydrodynamic lubrication effect.

As shown in Figure 6, graphics while being the work of distributed heat wedge shape hydrodynamic lubrication thrust slide bearing, when thrust-bearing work, bearing shell surface produces the projection that is circle distribution, is made up of four thrust slide bearing bearing shells.

When sliding bearing work, can produce a large amount of frictional heats, these frictional heats pass to circular pillar by oiling agent, bearing shell, make circular pillar expanded by heating, produce axial elongation, circular pillar extruding bearing shell, makes bearing shell surface form a series of projections, these projections form hydrldynamic pressure lubrication condition with the axle journal rotating, oiling agent, and formed multiple wedge shapes convergence gap, fabulous raising bearing hydrodynamic lubrication effect, thereby bearing capacity and the working life of improving bearing.

Working principle of the present utility model is:

In general sliding bearing, between axle journal and bearing shell, generally only form one or a minority wedge shape convergence gap, hydrodynamic lubrication effect is limited, has limited the bearing capacity of bearing, the working life of also having reduced bearing simultaneously.In radial sliding bearing by increase a series of circular pillars between bearing shell and bearing base, connect bearing shell and bearing base, on thrust slide bearing bearing base, process equally distributed circular hole, in circular hole, lay circular pillar, bearing shell is fixed on bearing base and circular pillar surface, the frictional heat producing in recycling bearing running makes circular pillar produce thermal distortion elongation, extruding bearing shell, form the projection that is circle distribution at inner surface of bearing bush, these projections form multiple wedge shape convergences gap with axle journal, form multiple hydrodynamic lubrications interval, improve dynamic lubrication effect, thereby improve bearing working life and bearing capacity, it is lubricated that left and right two directions can be realized in the wedge shape convergence gap forming, improve bearing Applicable scope.

Above-mentioned embodiment is used for the utility model of explaining; rather than the utility model is limited; in the protection domain of spirit of the present utility model and claim, any modification and change that the utility model is made, all fall into protection domain of the present utility model.

Claims (6)

1. the sliding bearing that can produce distributed heat wedge shape hydrodynamic lubrication, is characterized in that: comprise bearing base, multiple circular pillar and bearing shell that diameter is identical; Between bearing base and bearing shell, connect by multiple circular pillars, multiple circular pillars to be circle distribution, are full of oiling agent between axle journal and inner surface of bearing bush at bearing shell outer surface.

2. a kind of sliding bearing that can produce distributed heat wedge shape hydrodynamic lubrication according to claim 1, it is characterized in that: described multiple circular pillars are circle distribution at bearing shell outer surface, the axis of its circular pillar is by central angle distributions such as the bearing shell center of circle are, and it is distributed as single or double form.

3. a kind of sliding bearing that can produce distributed heat wedge shape hydrodynamic lubrication according to claim 1, is characterized in that: described circular pillar adopts thermal expansion and the larger copper product of heat conductivity, is HSn62-1, HFe59-1-1 or QMn5; Cylinder diameter is 5 ~ 20mm, and circular pillar quantity is 6 ~ 500.

4. the sliding bearing that can produce distributed heat wedge shape hydrodynamic lubrication, is characterized in that: comprise bearing base, multiple circular pillar and bearing shell that diameter is identical; On bearing base, have the circular hole that equally distributed diameter is identical, circular pillar is all installed in each circular hole, bearing shell is fixed on bearing base and circular pillar surface, between bearing shell and diameter of axle surface, is full of oiling agent.

5. a kind of sliding bearing that can produce distributed heat wedge shape hydrodynamic lubrication according to claim 4, it is characterized in that: on described bearing base, have the circular hole that equally distributed diameter is identical, its center of circular hole axis is that rotating center is circle distribution, and round hole axial is parallel with bearing centre axis.

6. a kind of sliding bearing that can produce distributed heat wedge shape hydrodynamic lubrication according to claim 4, is characterized in that: described circular pillar adopts thermal expansion and the larger copper product of heat conductivity, is HSn62-1, HFe59-1-1 or QMn5; Cylinder diameter is 5 ~ 20mm, and circular pillar quantity is 6 ~ 500.

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