CN210178763U - Sliding bearing, motor comprising sliding bearing and compressor - Google Patents
Sliding bearing, motor comprising sliding bearing and compressor Download PDFInfo
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- CN210178763U CN210178763U CN201920638180.4U CN201920638180U CN210178763U CN 210178763 U CN210178763 U CN 210178763U CN 201920638180 U CN201920638180 U CN 201920638180U CN 210178763 U CN210178763 U CN 210178763U
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- 239000003921 oil Substances 0.000 claims abstract description 251
- 239000010687 lubricating oil Substances 0.000 claims abstract description 56
- 230000002093 peripheral effect Effects 0.000 claims abstract description 5
- 230000000149 penetrating effect Effects 0.000 claims abstract description 3
- 230000000903 blocking effect Effects 0.000 claims description 6
- 230000007704 transition Effects 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000009795 derivation Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a sliding bearing, a motor comprising the sliding bearing and a compressor, wherein the sliding bearing comprises a bearing body, the bearing body is provided with a bearing surface matched with the outer peripheral surface of a motor shaft and a thrust surface matched with a thrust bearing; a plurality of oil guide grooves are formed in the bearing surface, and oil inlet holes penetrating through the side wall of the bearing body are formed in each oil guide groove; the thrust surface is provided with a plurality of oil storage grooves communicated with the bearing surface, one side of each oil storage groove is correspondingly provided with an oil guide surface extending along the circumferential direction of the bearing body, and the oil guide surface is obliquely arranged to guide out lubricating oil in the oil storage grooves. So set up, lead oil groove and inlet port and ensure that the loading face has sufficient lubricating oil, the oil storage tank guarantees to have sufficient lubricating oil on the thrust surface, leads the oil level and makes lubricating oil distribute on the thrust surface, and distribute more evenly, has solved the wearing and tearing problem of thrust surface and loading face.
Description
Technical Field
The utility model relates to a rotating machinery equipment field, more specifically say, relate to a slide bearing, including this slide bearing's motor and compressor.
Background
The motor shaft of the motor of the centrifugal compressor rotates under the support of the front and the rear groups of sliding bearings, and the sliding bearings are matched with the thrust bearings on the motor shaft, so that the axial displacement of the motor shaft is limited within the range of 0.026 mm-0.032 mm, and a lubricating oil film is formed between the sliding bearings and the thrust bearings. For the sliding bearing at the tail end of the motor, the inner wall surface of the sliding bearing is a bearing surface corresponding to the outer surface of a motor shaft, the bearing surface is separated from the outer surface of the motor shaft by lubricating oil and is not in direct contact with the motor shaft, the surface where the sliding bearing is matched with the thrust bearing is a thrust surface, and the difficulty of stable establishment of an oil film between the sliding bearing and the thrust bearing is high due to the fact that the thrust surface is in a vertical surface, so that oil supply on the thrust surface is uneven, the top of the thrust surface is abraded. Meanwhile, the bearing surface of the sliding bearing is easy to have the abrasion phenomenon caused by insufficient oil supply.
Therefore, how to solve the problem that the oil film on the thrust surface of the sliding bearing is difficult to stably establish, which causes the top abrasion of the thrust surface to influence the stable operation of the compressor motor, and the problem that the bearing surface of the sliding bearing is abraded due to insufficient oil supply become important technical problems to be solved by technical personnel in the field.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a slide bearing, including this slide bearing's motor and compressor, it is difficult to stably establish to solve slide bearing's thrust face oiling membrane, leads to thrust face top wearing and tearing to influence the problem of compressor motor steady operation to and slide bearing's loading end fuel feeding is not enough the problem that appears wearing and tearing. The utility model provides a plurality of technical effects that preferred technical scheme among a great deal of technical scheme can produce see the explanation below in detail.
The utility model provides a sliding bearing, which comprises a bearing body, wherein the bearing body is provided with a bearing surface matched with the outer peripheral surface of a motor shaft and a thrust surface matched with a thrust bearing; a plurality of oil guide grooves are formed in the bearing surface, and oil inlet holes penetrating through the side wall of the bearing body are formed in each oil guide groove; the thrust surface is provided with a plurality of oil storage grooves communicated with the bearing surface, one side of each oil storage groove is correspondingly provided with an oil guide surface extending along the circumferential direction of the bearing body, and the oil guide surface is obliquely arranged to guide out lubricating oil in the oil storage grooves.
Preferably, lead the oil groove edge the axial extension of bearing body, lead the border of oil groove with through cambered surface transitional coupling between the loading surface.
Preferably, lead the oil groove and include that first lead oil groove and two at least second lead the oil groove, first lead the oil groove setting and be in the upper end of loading end, each lead the wall of oil groove and be the cambered surface, just first lead the wall area of oil groove and be greater than the wall area of oil groove is led to the second.
Preferably, the oil storage tank is a strip-shaped structure extending along the radial direction of the thrust surface, and an oil drainage tank extending to the radial outer side of the thrust surface is arranged at one end, far away from the bearing surface, of the oil storage tank.
Preferably, the joint of the bearing surface and the thrust surface is provided with an annular oil groove extending along the circumferential direction of the bearing body, and the oil storage groove is communicated with the annular oil groove.
Preferably, the end of each oil guide groove is correspondingly provided with a connecting section communicated with the thrust surface, and the area of the cross section of the connecting section is smaller than that of the corresponding oil guide groove.
Preferably, one side of the oil guide surface, which is far away from the bearing surface, is provided with an oil retaining edge for blocking the lubricating oil on the oil guide surface from flowing out along the radial direction of the thrust surface.
Preferably, a plane area connected with the oil guide surface is further arranged between the adjacent oil storage tanks, and the end surface of the oil retaining edge and the plane area are located in the same vertical plane.
Preferably, the projection area of the plane area in the vertical plane is smaller than the projection area of the oil guide surface in the vertical plane.
Preferably, the ratio of the projection area of the plane area in the vertical plane to the projection area of the oil guide surface in the vertical plane is 1: 2.
Preferably, the height difference of the two ends of the oil guide surface in the axial direction of the bearing body is 0.06mm to 0.1 mm.
Preferably, the wall surfaces of the first oil guide groove and the second oil guide groove are both arc surfaces, and the radius of the first oil guide groove is 6 times that of the second oil guide groove.
Preferably, the number of the oil storage tanks is 8-14.
Preferably, the number of the oil storage grooves is 10, and the oil storage grooves are uniformly distributed along the circumferential direction of the thrust surface.
The utility model also provides a motor, including slide bearing, slide bearing is foretell slide bearing.
The utility model discloses provide a compressor again, including the motor, the motor is foretell motor.
The utility model provides an among the technical scheme, slide bearing includes the bearing body, and the bearing body has loading end and thrust surface, and the loading end is corresponding with the outer peripheral face of motor shaft, bears axial load, and thrust surface is corresponding with footstep bearing. The bearing surface is provided with a plurality of oil guide grooves, and each oil guide groove is internally provided with an oil inlet hole for supplying oil to the oil guide groove so as to ensure that enough lubricating oil is arranged on the bearing surface. The thrust surface is provided with a plurality of oil storage grooves communicated with the bearing surface, one side of each oil storage groove is provided with an inclined oil guide surface used for guiding out lubricating oil in the oil storage groove, and each oil guide surface extends along the circumferential direction of the bearing body. The oil storage groove ensures that enough lubricating oil is arranged on the thrust surface, and the oil guide surface ensures that the lubricating oil is distributed on the thrust surface and is distributed more uniformly so as to form an oil film between the thrust surface and the thrust bearing. By the arrangement, the problem that the top of the thrust surface is abraded to influence the stable operation of a motor of the compressor due to the fact that an oil film on the thrust surface of the sliding bearing is difficult to stably establish is solved, and the problem that the bearing surface of the sliding bearing is abraded due to insufficient oil supply.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of a sliding bearing in an embodiment of the present invention;
fig. 2 is a half sectional view of a plain bearing in an embodiment of the invention;
fig. 3 is a cross-sectional view P-P of fig. 2.
In fig. 1-3:
1-bearing surface, 2-thrust surface, 3-first oil guide groove, 4-second oil guide groove, 5-oil inlet hole, 6-oil storage groove, 7-oil guide surface, 8-oil drainage groove, 9-annular oil groove, 10-connecting section, 11-oil retaining edge and 12-plane area.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
An object of this embodiment is to provide a sliding bearing, oil guide groove and inlet port on the bearing surface ensure that the bearing surface supplies oil sufficiently, the oil storage tank that communicates with the bearing surface on the thrust surface and the oil guide surface that leads out the lubricating oil in the oil storage tank make the lubricating oil on the thrust surface sufficient and evenly distributed, solve the problem that there is wearing and tearing in thrust surface and the bearing surface of sliding bearing.
Hereinafter, embodiments will be described with reference to the drawings. The embodiments described below do not limit the scope of the invention described in the claims. Further, the entire contents of the configurations shown in the following embodiments are not limited to those necessary as a solution of the invention described in the claims.
Referring to fig. 1-3, in the present embodiment, the sliding bearing includes a bearing body, a bearing surface 1 is disposed on the bearing body and is matched with an outer peripheral surface of a motor shaft, a thrust surface 2 is disposed on the bearing body and is matched with the thrust bearing, and the thrust surface 2 is disposed in a vertical plane. The bearing surface 1 is provided with a plurality of oil guide grooves, each oil guide groove is internally provided with an oil supply hole for supplying oil to the oil guide groove, the oil supply hole penetrates through the side wall of the bearing body and is connected with an oil hole in the rear end cover of the motor, and the refrigeration oil in the high-level oil tank enters the oil hole in the rear end cover of the motor through a motor oil supply pipeline. The thrust surface 2 is provided with a plurality of oil storage grooves 6 communicated with the bearing surface 1, one side of each oil storage groove 6 is correspondingly provided with an inclined oil guide surface 7, the oil guide surfaces 7 are used for guiding out lubricating oil in the oil storage grooves 6, and the extending direction of the oil guide surfaces 7 is the circumferential direction of the bearing body.
Lubricating oil flows into the oil guide groove through the oil inlet 5 to ensure that enough lubricating oil is on the bearing surface 1, the oil storage groove 6 is communicated with the bearing surface 1, the lubricating oil on the bearing surface 1 flows into the oil storage groove 6, and the lubricating oil in the oil storage groove 6 is guided out by the oil guide surface 7, so that enough lubricating oil is on the thrust surface 2 and is uniformly distributed, and a lubricating oil film is formed between the thrust surface 2 and the thrust bearing. By the arrangement, the problem that an oil film on the thrust surface 2 is difficult to stably establish, the thrust surface 2 is easy to wear to influence the reliable operation of the motor is solved, and meanwhile, the problem of wear caused by insufficient oil supply on the bearing surface 1 is also solved.
In the preferred scheme of this embodiment, lead oil groove along the axial extension of bearing body, lead between the border of oil groove and the loading face 1 through cambered surface transitional coupling. So set up, the extending direction of leading the oil groove is unanimous with the axial of motor shaft, and the motor shaft is when rotating, is convenient for take out the lubricating oil of leading in the oil groove, simultaneously, leads and passes through cambered surface connection between the border of oil groove and the loading end 1, and the lubricating oil of being convenient for flows out in leading the oil groove.
In this embodiment, lead the oil groove and include that first oil groove 3 and two at least second lead oil groove 4, first oil groove 3 and second lead the wall of oil groove 4 and be the cambered surface, and first oil groove 3 sets up the upper end at loading face 1 of leading to the wall area of first oil groove 3 is greater than the wall area of second oil groove 4 of leading. Preferably, the cross-sectional area of the oil inlet 5 corresponding to the first oil guide groove 3 is larger than the cross-sectional area of the oil inlet 5 in the second oil guide groove 4. The number of the second oil guide grooves 4 can be two, the second oil guide grooves are distributed on the middle shaft surface of the bearing body, and the first oil guide groove 3 and the two second oil guide grooves 4 form a shape like a Chinese character 'pin'. Of course, in other embodiments, the number of the second oil guiding grooves 4 may also be three, four, etc.
So set up, the lubricating oil in the first oil groove 3 of leading flows down along its both sides limit for bearing surface 1 upper portion and thrust surface 2's upper portion all has sufficient lubricating oil, and the lubricating oil downward flow in the second oil groove 4 is led simultaneously, makes and has sufficient lubricating oil on whole bearing surface 1 and the thrust surface 2. The upper half circumference of the bearing surface 1 is supplied with oil by the first oil guide groove 3, and the wall surface of the first oil guide groove 3 is required to be slightly larger.
In the preferred scheme of this embodiment, the oil storage tank 6 is a strip-shaped structure and extends along the radial direction of the thrust surface 2, and an oil drainage groove 8 extending to the radial outer side of the thrust surface 2 is provided at one end of the oil storage tank 6 away from the bearing surface 1. Preferably, the cross-sectional area of the drain groove 8 is smaller than the cross-sectional area of the oil reservoir 6. So set up, the lubricating oil that oil drainage groove 8 will rise the temperature is derived the bearing body, flows back to the oil gallery of motor afterbody, and after the recooling, via inlet port 5 inflow bearing body again, realize the circulation of lubricating oil.
In some embodiments, referring to fig. 3, a ring oil groove 9 is disposed at a connection portion of the bearing surface 1 and the thrust surface 2, the ring oil groove 9 extends along a circumferential direction of the bearing body, one end of the oil storage groove 6 is communicated with the ring oil groove 9, and the lubricating oil on the bearing surface 1 flows through the ring oil groove 9 and then onto the thrust surface 2. The wall surface of the annular oil groove 9 is a cambered surface. So set up, ring oil groove 9 is with the lubricating oil direction loading face 1 on the loading face 1, is favorable to evenly distributed lubricating oil on the thrust surface 2.
In this embodiment, the end of each oil guiding groove is provided with a connecting section 10 communicated with the thrust surface 2, and the cross-sectional area of the oil guiding groove is larger than that of the connecting section 10 connected with the oil guiding groove. That is, the cross-sectional area of the connection section 10 connected to the first oil guide groove 3 is smaller than that of the first oil guide groove 3, and the cross-sectional area of the connection section 10 connected to the second oil guide groove 4 is smaller than that of the second oil guide groove 4. With this arrangement, the connecting section 10 guides the lubricating oil in the oil guide groove to the thrust surface 2, and the small cross-sectional area prevents the lubricating oil in the oil guide groove from flowing to the bearing surface 1 too much, thereby ensuring sufficient lubricating oil on the bearing surface 1. Preferably, one connecting section 10 is in direct communication with one oil reservoir 6 on the thrust surface 2.
In a preferred embodiment of the present invention, an oil blocking edge 11 is disposed on a side of the oil guiding surface 7 away from the bearing surface 1, and the oil blocking edge 11 is used for blocking the lubricating oil on the oil guiding surface 7 from flowing out radially outward along the thrust surface 2. So set up, flange 11 prevents to lead the lubricating oil on oil level 7 and flows out thrust surface 2 for there is sufficient lubricating oil on thrust surface 2.
And a plane area 12 is arranged between the adjacent oil storage tanks 6, the edge of the plane area 12 is connected with the edge of the oil guide surface 7, and the end surface of the oil baffle 11 and the plane area 12 are in the same vertical plane. That is, a plurality of wedge-shaped grooves corresponding to the oil storage grooves 6 one by one are arranged on the thrust surface 2, the oil guide surface 7 is provided with the bottom surfaces of the wedge-shaped grooves, one ends of the wedge-shaped grooves, which are close to the oil storage grooves 6, are deep, and the oil blocking edges 11 are the edges of the wedge-shaped grooves.
Further, the projected area of the plane area 12 in the vertical plane is smaller than the projected area of the oil guide surface 7 in the vertical plane, and the plane area 12 itself is in the vertical plane, so that the projected area thereof in the vertical plane is equal to the area of the plane area 12. Preferably, the projected area of the planar area 12 in the vertical plane is equal to 1/2 of the projected area of the oil guide surface 7 in the vertical plane. The projection of the oil guide surface 7 in the vertical plane and the plane area 12 are both part of a sector, and the central angle corresponding to the projection of the oil guide surface 7 in the vertical plane is 2 times of the central angle corresponding to the plane area 12. So set up, lead the lubricating oil that oil level 7 derived from the oil storage tank 6 in more, lead the area of oil level 7 great moreover for lubricating oil distribution on thrust surface 2 is more even.
In the present embodiment, the height difference between the two ends of the oil guide surface 7 in the axial direction of the bearing body is 0.06mm to 0.1 mm. The height difference between the two ends of the oil guide surface 7 is too large to guide out the lubricating oil; the height difference between the two ends of the oil guide surface 7 is too small, and less lubricating oil can flow to the oil guide surface 7 in the oil storage tank 6. With the arrangement, the oil guiding effect of the oil guiding surface 7 is best.
In a preferred embodiment of the present invention, the wall surfaces of the first oil guiding groove 3 and the second oil guiding groove 4 are both arc surfaces, and the radius of the first oil guiding groove 3 is 6 times the radius of the second oil guiding groove 4. For a motor model YSR383-2-R134a, the radius of the first oil guide groove 3 is 30mm, and the radius of the second oil guide groove 4 is preferably 5 mm. So set up, have sufficient lubricating oil on bearing surface 1 and the thrust face 2, ensure that the motor can the steady operation.
In this embodiment, the number of the oil storage grooves 6 on the thrust surface 2 is 8 to 14, and the oil storage grooves 6 correspond to the oil guide surfaces 7 one by one. Preferably, the oil reservoir 6 is provided at 10 in number and uniformly distributed in the circumferential direction of the thrust surface 2. So set up, have sufficient lubricating oil and distribute evenly on thrust surface 2, simultaneously, better cooperation between thrust surface 2 and the footstep bearing.
The present sliding bearing will be described in detail with reference to the above embodiments, in which the sliding bearing includes a bearing body, a bearing surface 1 is matched with the outer surface of the motor shaft, and a thrust surface 2 is matched with the thrust bearing. Be equipped with on the loading end 1 and all lead oil groove 3 and two at least second along the axial extension of bearing body and lead oil groove 4, first lead oil groove 3 and set up in the upper end of loading end 1, the wall of first lead oil groove 3 and the wall of second lead oil groove 4 are the arc surface, and the radius of first lead oil groove 3 is 6 times of the radius of second lead oil groove 4, all is equipped with inlet port 5 that runs through the lateral wall of bearing body in each leads the oil groove. The joint of the bearing surface 1 and the thrust surface 2 is provided with an annular oil groove 9 extending along the circumferential direction of the bearing body, and the wall surface of the annular oil groove 9 is an arc surface. Be equipped with a plurality of oil storage tanks 6 that communicate with ring oil groove 9 on thrust surface 2, one side of each oil storage tank 6 all corresponds and is equipped with the slope that is used for exporting the lubricating oil in the oil storage tank 6 and leads oil level 7, lead oil level 7 and extend along the circumference of bearing body, each one side that leads oil level 7 to keep away from loading surface 1 is equipped with flange 11, still be equipped with the plane area 12 that is connected with leading oil level 7 between two adjacent oil storage tanks 6, the terminal surface of plane area 12 and flange 11 is in same vertical plane. The area of the planar area 12 is 1/2 of the projected area of the oil guiding surface 7 in the vertical plane. The end of the oil guide groove is provided with a connecting section 10 communicated with the annular oil groove 9, and one end of the oil storage groove 6 far away from the bearing surface 1 is provided with an oil drainage groove 8 extending to the radial outer side of the thrust surface 2. The height difference of two ends of the oil guide surface 7 in the axial direction of the bearing body is 0.06 mm-0.1 mm. The number of the oil storage grooves 6 and the number of the oil guide surfaces 7 are 10, and the oil storage grooves 6 are evenly distributed along the circumferential direction of the bearing body.
So set up, inlet port 5 with lead the oil groove and guarantee that there is sufficient lubricating oil on bearing body's the loading face 1, lubricating oil on the loading face 1 flows to thrust surface 2 on, oil storage tank 6 on thrust surface 2 ensures that there is sufficient lubricating oil on thrust surface 2, and simultaneously, it makes lubricating oil distribution on thrust surface 2 more even to lead oil level 7, it is difficult to stable the establishment to have solved thrust surface 2 oil film, the problem that influences motor steady operation appears the friction, the friction problem that the not enough fuel feeding leads to on the loading face 1 has still been solved.
The utility model also provides a motor, including slide bearing, this slide bearing is the slide bearing in the above-mentioned embodiment. So set up, have sufficient lubricating oil on the loading surface 1 and the thrust face 2 of slide bearing, the effect of deriving the lubricating oil in the oil storage tank 6 is played to the oil guide surface 7 on the thrust face 2 for lubricating oil distribution on the thrust face 2 is more even, so that the motor operating stability including this slide bearing is better. The derivation process of the beneficial effect is substantially similar to the derivation process of the beneficial effect brought by the sliding bearing, and therefore, the description is omitted here.
The utility model also provides a compressor, including the motor, this motor is the motor in the above-mentioned embodiment. So set up, the motor shaft of compressor is rotatory under slide bearing's support, and there is sufficient lubricating oil on slide bearing and motor shaft complex bearing surface 1 and with footstep bearing complex thrust surface 2, and the lubricating oil of oil storage tank 6 is derived to oil guide surface 7 on thrust surface 2 to, evenly distributed has solved the wearing and tearing problem on thrust surface 2 and the bearing surface 1, and the operating stability of compressor is better. The derivation process of the beneficial effect is substantially similar to the derivation process of the beneficial effect brought by the sliding bearing and the motor, and therefore, the description is omitted here.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments. The utility model provides a plurality of schemes contain the basic scheme of itself, mutual independence to restrict each other, but it also can combine each other under the condition of not conflicting, reaches a plurality of effects and realizes jointly.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (16)
1. A sliding bearing is characterized by comprising a bearing body, wherein the bearing body is provided with a bearing surface (1) matched with the outer peripheral surface of a motor shaft and a thrust surface (2) matched with a thrust bearing; a plurality of oil guide grooves are formed in the bearing surface (1), and oil inlet holes (5) penetrating through the side wall of the bearing body are formed in the oil guide grooves; be equipped with on thrust surface (2) a plurality of with oil storage tank (6) that loading surface (1) are linked together, each one side of oil storage tank (6) all corresponds and is equipped with the edge oil guide surface (7) that the circumference of bearing body extends, oil guide surface (7) slope set up, in order to with lubricating oil in oil storage tank (6) is derived.
2. A plain bearing according to claim 1, characterized in that the oil-guiding groove extends in the axial direction of the bearing body, and the edge of the oil-guiding groove is in transition connection with the bearing surface (1) via a cambered surface.
3. A plain bearing according to claim 2, characterized in that the oil-guiding grooves comprise a first oil-guiding groove (3) and at least two second oil-guiding grooves (4), the first oil-guiding groove (3) being provided at the upper end of the bearing surface (1), the wall surface of each oil-guiding groove being an arc surface, and the area of the wall surface of the first oil-guiding groove (3) being larger than the area of the wall surface of the second oil-guiding groove (4).
4. A plain bearing according to claim 1, in which the oil reservoir (6) is a strip-like structure extending in the radial direction of the thrust surface (2), and an oil drainage groove (8) extending to the radially outer side of the thrust surface (2) is provided at the end of the oil reservoir (6) remote from the bearing surface (1).
5. A plain bearing according to claim 1, characterized in that the joint of the bearing surface (1) and the thrust surface (2) is provided with an annular oil groove (9) extending in the circumferential direction of the bearing body, the oil reservoir (6) communicating with the annular oil groove (9).
6. A plain bearing according to claim 1, wherein the end of each oil-guiding groove is provided with a connecting section (10) in communication with the thrust surface (2) and the cross-section of the connecting section (10) has a smaller area than the corresponding cross-section of the oil-guiding groove.
7. A plain bearing according to claim 1, in which the side of the oil-guiding surface (7) remote from the bearing surface (1) is provided with an oil-retaining edge (11) for blocking the outward flow of the lubricating oil on the oil-guiding surface (7) in the radial direction of the thrust surface (2).
8. A plain bearing according to claim 7, characterized in that a planar area (12) is provided between adjacent oil reservoirs (6) and is connected to the oil guiding surface (7), and the end surface of the oil deflector (11) is in the same vertical plane as the planar area (12).
9. A plain bearing according to claim 8, in which the projected area of the planar area (12) in a vertical plane is smaller than the projected area of the oil-guiding surface (7) in a vertical plane.
10. A plain bearing according to claim 9, in which the ratio of the projected area of the planar area (12) in the vertical plane to the projected area of the oil-guiding surface (7) in the vertical plane is 1: 2.
11. The plain bearing according to claim 1, characterized in that the difference in height in the axial direction of the bearing body between both ends of the oil-guiding surface (7) is 0.06mm to 0.1 mm.
12. A plain bearing according to claim 3, characterized in that the wall surfaces of the first oil-guiding groove (3) and the second oil-guiding groove (4) are both circular arc surfaces, and the radius of the first oil-guiding groove (3) is 6 times the radius of the second oil-guiding groove (4).
13. A plain bearing according to claim 1, characterized in that the number of oil reservoirs (6) is set to 8-14.
14. A plain bearing according to claim 13, in which the oil reservoir (6) is provided in number of 10 and is evenly distributed in the circumferential direction of the thrust surface (2).
15. An electrical machine comprising a plain bearing according to any one of claims 1 to 14.
16. A compressor comprising a motor, said motor being as claimed in claim 15.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920638180.4U CN210178763U (en) | 2019-05-06 | 2019-05-06 | Sliding bearing, motor comprising sliding bearing and compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920638180.4U CN210178763U (en) | 2019-05-06 | 2019-05-06 | Sliding bearing, motor comprising sliding bearing and compressor |
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| Publication Number | Publication Date |
|---|---|
| CN210178763U true CN210178763U (en) | 2020-03-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920638180.4U Active CN210178763U (en) | 2019-05-06 | 2019-05-06 | Sliding bearing, motor comprising sliding bearing and compressor |
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| CN (1) | CN210178763U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110107596A (en) * | 2019-05-06 | 2019-08-09 | 格力电器（合肥）有限公司 | Sliding bearing, motor comprising sliding bearing and compressor |
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2019
- 2019-05-06 CN CN201920638180.4U patent/CN210178763U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110107596A (en) * | 2019-05-06 | 2019-08-09 | 格力电器（合肥）有限公司 | Sliding bearing, motor comprising sliding bearing and compressor |
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