CN203257887U - Thrust sliding bearing - Google Patents
Thrust sliding bearing Download PDFInfo
- Publication number
- CN203257887U CN203257887U CN 201320254454 CN201320254454U CN203257887U CN 203257887 U CN203257887 U CN 203257887U CN 201320254454 CN201320254454 CN 201320254454 CN 201320254454 U CN201320254454 U CN 201320254454U CN 203257887 U CN203257887 U CN 203257887U
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- bearing
- workpiece
- bearing body
- plain thrust
- elastomeric plastics
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Abstract
The utility model relates to a thrust sliding bearing which comprises a bearing body, wherein the contact surface, which is in friction with a workpiece, of the upper end of the bearing body is provided with a plurality of lubricating grooves which are arranged along the peripheral direction; a gap formed in the bearing surface at the lower end of the bearing body is correspondingly formed below each lubricating groove; the length of each gap along the rotating direction of the workpiece is larger than that of each lubricating groove along the rotating direction of the workpiece. When the workpiece is in friction with the contact surface and suffers an impact load, as the gaps formed below the lubricating grooves in the contact surface provide an elastic deformation space to form rigid fragments and flexible fragments which are periodical and alternate, the species distribution of the dynamic surface pressure of the bearing is changed, certain depressed deformation can be generated near the lubricating grooves due to frictional dual pressure, therefore, a wedged gap is formed between the workpiece and the contact surface to facilitate formation and retention of a liquid membrane, the adhesive wear when equipment is started and operates is alleviated, the service life of the bearing is prolonged, and the starting torque is also reduced. The thrust sliding bearing can be applied to field of bearings with water and oil as lubricating media.
Description
Technical field
The utility model relates to a kind of bearing, particularly a kind of plain thrust bearing.
Background technique
Plain thrust bearing generally is installed in the various device with the pattern of thrust bearing shoe valve, and rotatingshaft and equipment are played support and stable effect.Plain thrust bearing need to continue to carry immense pressure in rotation, and its frictional force and wear resistance are to judge the very important index of quality.
As everyone knows, plain thrust bearing can form one deck liquid film as thin as a wafer at two friction surfaces of workpiece and bearing in the course of the work by lubricant oil or water, isolates two friction surfaces, capable of reducing friction resistance and reduction wearing and tearing, thus increase the service life.Therefore, forming and keep liquid film, is reduce friction power and alleviate the effective measures of wearing and tearing of bearing.Two smooth friction surfaces that push and slide mutually, along with the increase of pressure, more and more difficult between directly forms liquid film.At present, the plain thrust bearing that exists on the market exists above-mentioned defective mostly, and the formation of moisture film and stabilization ratio are difficult during the bearing working, even can form the adhesive wear of bearing and workpiece.
Have the engineering staff specially to offer oil guide slot with the formation of promotion liquid film at the rubbing surface of bearing, but when equipment started, the close contact between the friction pair so that two rubbing surface faces are in tacky state, were difficult to form and stablize liquid film.
The model utility content
In order to overcome above-mentioned technical problem, the purpose of this utility model is to provide a kind of plain thrust bearing of long service life.
The technological scheme that the utility model adopts is:
A kind of plain thrust bearing, comprise bearing body, described bearing body upper end is provided with some lubrication grooves along circumferential arrangement with the surface of contact of friction of workpiece, the below of described lubrication groove is all to there being the breach that is opened on the supporting plane of bearing body lower end, described breach along the length of workpiece sense of rotation greater than the length of lubrication groove along the workpiece sense of rotation, the rigidity that the formation cycle replaces and soft segment.
As further improvement of the utility model, described bearing body comprises the elastomeric plastics layer on upper strata and is bonded in the metallic matrix layer of elastomeric plastics layer below, described surface of contact is the upper surface of elastomeric plastics layer, described lubrication groove is opened in the elastomeric plastics layer, described supporting plane is the lower surface of metallic matrix layer, and described breach is opened in the metallic matrix layer.
As further improvement of the utility model, described elastomeric plastics layer is elastoplastic polymer alloy material.
As further improvement of the utility model, described metallic matrix layer is the soft metal material.
As further improvement of the utility model, the thickness of described elastomeric plastics layer is not more than 1/2 of metallic matrix layer thickness.
As further improvement of the utility model, the cross section of described breach is triangular in shape, dome-shaped, trapezoidal, quadrilateral or arc.
As further improvement of the utility model, described bearing body is all-in-one-piece disk or ring.
As further improvement of the utility model, described bearing body is the assembled disk of several fan-shaped distinguish or ring.
The beneficial effects of the utility model are: when workpiece and surface of contact friction with exist in the situation of impact load, because the breach of surface of contact lubrication groove below provides elastically-deformable space, the rigidity that the formation cycle replaces and soft segment, changed the form distribution that the bearing dynamic surface is pressed, the pressure of friction pair is so that produce certain depressed deformation near the lubrication groove, make between workpiece and surface of contact and produce wedge gap, help formation and the maintenance of liquid film, adhesive wear when having alleviated device start and operation, prolong the working life of bearing, also reduced starting torque.
Description of drawings
Below in conjunction with drawings and embodiments the utility model is further specified.
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the schematic representation of the utility model running state;
Fig. 3 is the dynamic pressure distribution schematic representation of surface of contact in the utility model running state.
Embodiment
As shown in Figure 1, a kind of plain thrust bearing comprises bearing body, and the upper-end surface of bearing body is the surface of contact 1 with the annular of friction of workpiece, is called mirror board 7 with respect to surface of contact 1 on the workpiece.During work, mirror board 7 is with surface of contact 1 friction and transmit axial pressure, can form lubricating liquid film 8 between mirror board 7 and surface of contact 1, thereby both are lubricated.Be provided with some lubrication grooves 2 along circumferential arrangement at surface of contact 1, these lubrication grooves 2 run through interior ring and the outer shroud of annulus, are used for the circulation of the lubrication cooling mediums such as oil and water, to increase the formation chance of liquid film.
The lower end surface of bearing body is supporting plane 3, offer some breach 4 on this supporting plane 3, the quantity of breach 4 is identical with the quantity of lubrication groove 2, and the below of lubrication groove 2 is all to there being a breach 4, these breach 4 along the length of workpiece sense of rotation greater than the length of lubrication groove 2 along the workpiece sense of rotation, less than the distance between two lubrication grooves 2 on the equivalent locations.Therefore, as shown in Figure 2, when mirror board 7 with surface of contact 1 friction with exist in the situation of impact load, because the breach 4 of lubrication groove 2 belows provides elastically-deformable space, formed soft segment, two side positions of each breach 4 have formed the rigidity fragment, therefore the rigidity and the soft segment that replace of formation cycle, changed the form distribution (shown in the curve among Fig. 3) that the bearing dynamic surface is pressed, the pressure of friction pair is so that produce certain depressed deformation near the lubrication groove 2, make 1 of workpiece and surface of contact produce wedge gap, help formation and the maintenance of liquid film, adhesive wear when having alleviated device start and operation has prolonged working life of bearing, also reduces starting torque.As shown in Figure 3, the solid line of breach 4 and lubrication groove 2 partly represents original state, and dotted portion represents surface of contact 1 pressure-bearing and the working state during with mirror board 7 friction.
As further preferred embodiment, bearing body is comprised of the elastomeric plastics layer 5 on upper strata and the metallic matrix layer 6 that is connected to elastomeric plastics layer 5 below, and elastomeric plastics layer 5 and metallic matrix layer 6 are directly bonding or bond together by adhesive.The upper surface of elastomeric plastics layer 5 is surface of contact 1, and lubrication groove 2 is opened in the elastomeric plastics layer 5, and the lower surface of metallic matrix layer 6 is supporting plane 3, and breach 4 is opened in the metallic matrix layer 6.
System is that thrust-bearing is compared with pottery with metal, directly the Young's modulus of elastomeric plastics layer 5 its material of contact lense panel 7 is much smaller than metallic material, impact load to mirror board 7 has played certain buffer function, and the elasticity of elastomeric plastics layer 5 can make the pressure of its self adaption surface of contact 1 change; In addition, the water lubrication performance of elastomeric plastics is better than metallic material, even under the higher condition of oil lubrication oil temperature, elastomeric plastics is easy burning as metallic material not also.
Compare with plastic thrust bearing, the metallic material of lower floor has the bearing capacity stronger than plastics on the one hand; On the other hand, on the elastomeric plastics layer 5 bonding covering metal base layers 6 after, surface of contact 1 fricative heat can comparatively fast conduct to metallic matrix layer 6 and take away, its thermal conductivity of more single plastic thrust bearing effectively improves, and more can keep operational reliability.And the rigidity fragment that the cycle replaces and the formation of soft segment have been avoided because reduced overall distortion behind the conventional plastic thrust-bearing pressurized, make between mirror board and the surface of contact bonding, thereby increased the hidden danger of starting torque.
Adopt above-mentioned double layer construction also to bring extra benefit, because the material of metallic matrix layer 6 itself also can be separately as plain thrust bearing, elastomeric plastics layer 5 mill to the greatest extent, still there is metallic matrix layer 6 can play interim effect, uses the bearing of present embodiment to make the reliability of whole equipment be improved.
As further preferred embodiment, elastomeric plastics layer 5 is elastoplastic polymer alloy material, this elastoplastic polymer alloy material is open in 201110060543.9 the file at application number, the raw material that comprises following mass parts: the extreme pressure agent of the antiwear additive of 100-120 part prepolymer resin, 20-45 part crosslinking and curing agent, 1-6 part, the oiling agent of 2-17 part, 0.1-1 part defoamer, 0-0.5 part, antiwear additive is the ultra-high molecular weight polyethylene of surface grafting hydroxyl or carboxyl.Interim oiling agent is the mixture of solid lubricant and fluid lubricant, and fluid lubricant and solid lubricant mixed proportion are any; Solid lubricant is at least a in synthetic wax, graphite, the superfine powder of polytetrafluoroethylene; Fluid lubricant is at least a in Perfluoropolyether lubricating grease, fluorine element fat, the lubricated silicone grease; Extreme pressure agent is at least a in molybdenum disulfide, tricresyl phosphate, triphenyl phosphate, triethyl phosphate, kodalk, the potassium metaborate.
Elastomeric plastics layer 5 its compressive strength that above-mentioned material is made〉10MPa, Young's modulus be at 200 ~ 1000MPa, has higher wear resistance and certain elasticity, and can Self-adjustment adapt to mirror board 7 applied pressures and change.This material has the characteristic of selflubricating and water lubrication simultaneously, the feasibility that provides the bearing lack of water to start.
As further preferred embodiment, metallic matrix layer 6 is the soft metal material, and such as copper or aluminium, so metallic matrix layer 6 has the ability that absorbs axial impact equally, and can cooperate elastomeric plastics layer 5 to change according to mirror board 7 pressure to keep fitting.
As further preferred embodiment, the thickness of elastomeric plastics layer 5 should be not more than 1/2 of metallic matrix layer 6 thickness, thereby guarantees bearing capacity and the capacity of heat transmission of bearing body.
As further improvement of the utility model, the geometrical shapies such as the cross section of described breach 4 is triangular in shape, dome-shaped, quadrilateral, trapezoidal or arc, main according to the size of bearing capacity and the distribution design of load.As shown in Figure 1, the cross section of this breach 4 is triangular in shape.
Bearing body can be integrated type, integrated disk or ring, also can be by several fan-shaped distinguish assembled disk or ring.
The above be the utility model preferred embodiment, it does not consist of the restriction to the utility model protection domain.
Claims (8)
1. plain thrust bearing, comprise bearing body, described bearing body upper end is provided with some lubrication grooves along circumferential arrangement (2) with the surface of contact (1) of friction of workpiece, it is characterized in that: the below of described lubrication groove (2) be all to should there being the breach (4) that is opened on the bearing body lower end supporting plane (3), described breach (4) along the length of workpiece sense of rotation greater than the length of lubrication groove (2) along the workpiece sense of rotation.
2. plain thrust bearing according to claim 1, it is characterized in that: described bearing body comprises the elastomeric plastics layer (5) on upper strata and is bonded in the metallic matrix layer (6) of elastomeric plastics layer (5) below, described surface of contact (1) is the upper surface of elastomeric plastics layer (5), described lubrication groove (2) is opened in the elastomeric plastics layer (5), described supporting plane (3) is the lower surface of metallic matrix layer (6), and described breach (4) is opened in the metallic matrix layer (6).
3. plain thrust bearing according to claim 2 is characterized in that: described elastomeric plastics layer (5) is elastoplastic polymer alloy material.
4. plain thrust bearing according to claim 2 is characterized in that: described metallic matrix layer (6) is the soft metal material.
5. according to claim 2 or 3 or 4 described plain thrust bearings, it is characterized in that: the thickness of described elastomeric plastics layer (5) is not more than 1/2 of metallic matrix layer (6) thickness.
6. each described plain thrust bearing in 4 according to claim 1 is characterized in that: the cross section of described breach (4) is triangular in shape, dome-shaped, trapezoidal, quadrilateral or arc.
7. each described plain thrust bearing in 4 according to claim 1, it is characterized in that: described bearing body is all-in-one-piece disk or ring.
8. each described plain thrust bearing in 4 according to claim 1, it is characterized in that: described bearing body is assembled disk or the ring of several fan-shaped distinguish.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320254454 CN203257887U (en) | 2013-05-10 | 2013-05-10 | Thrust sliding bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320254454 CN203257887U (en) | 2013-05-10 | 2013-05-10 | Thrust sliding bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203257887U true CN203257887U (en) | 2013-10-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320254454 Expired - Lifetime CN203257887U (en) | 2013-05-10 | 2013-05-10 | Thrust sliding bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203257887U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107429734A (en) * | 2015-03-10 | 2017-12-01 | 大丰工业株式会社 | Thrust slide bearing |
| CN108397885A (en) * | 2017-07-18 | 2018-08-14 | 奥克斯空调股份有限公司 | A kind of damping shaft, air exhausting structure and air conditioner |
| CN114382776A (en) * | 2021-12-17 | 2022-04-22 | 哈尔滨电气动力装备有限公司 | Nuclear main pump thrust tile static water layer heat insulation structure |
| CN114382776B (en) * | 2021-12-17 | 2024-05-17 | 哈尔滨电气动力装备有限公司 | Nuclear main pump thrust tile static water layer heat insulation structure |
-
2013
- 2013-05-10 CN CN 201320254454 patent/CN203257887U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107429734A (en) * | 2015-03-10 | 2017-12-01 | 大丰工业株式会社 | Thrust slide bearing |
| CN107429734B (en) * | 2015-03-10 | 2019-05-28 | 大丰工业株式会社 | Thrust slide bearing |
| CN108397885A (en) * | 2017-07-18 | 2018-08-14 | 奥克斯空调股份有限公司 | A kind of damping shaft, air exhausting structure and air conditioner |
| CN108397885B (en) * | 2017-07-18 | 2023-07-18 | 奥克斯空调股份有限公司 | Damping shaft, air outlet structure and air conditioner |
| CN114382776A (en) * | 2021-12-17 | 2022-04-22 | 哈尔滨电气动力装备有限公司 | Nuclear main pump thrust tile static water layer heat insulation structure |
| CN114382776B (en) * | 2021-12-17 | 2024-05-17 | 哈尔滨电气动力装备有限公司 | Nuclear main pump thrust tile static water layer heat insulation structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131030 |
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| CX01 | Expiry of patent term |