CN109519476B - Sliding bearing - Google Patents
Sliding bearing Download PDFInfo
- Publication number
- CN109519476B CN109519476B CN201811413061.5A CN201811413061A CN109519476B CN 109519476 B CN109519476 B CN 109519476B CN 201811413061 A CN201811413061 A CN 201811413061A CN 109519476 B CN109519476 B CN 109519476B
- Authority
- CN
- China
- Prior art keywords
- bearing
- cylindrical surface
- cylindrical
- positioning
- outer circumferential
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
-
- 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
- F16C37/00—Cooling of bearings
Abstract
The present invention relates to a bearing, and more particularly, to a sliding bearing. The bearing is of a cylindrical monomer structure, a raised cylindrical surface (1) is arranged on the outer circumferential surface of the bearing, and the cylindrical surface (1) is a positioning structure surface; the two sides of the cylindrical surface (1) on the outer circumferential surface of the bearing are conical surfaces, and the bottom surfaces of the conical surfaces are close to the cylindrical surface (1). The positioning structure surface designed in the technical scheme has high positioning precision and small required installation space. The guide mounting surface designed in the technical scheme is convenient for mounting and dismounting the bearing.
Description
Technical Field
The invention relates to a bearing, in particular to a sliding bearing
Background
Compared with a rolling bearing, the sliding bearing has the characteristics of light weight, long service life and the like in the prior art, but the conventional sliding bearing is assembled by a plurality of parts, so that the size is large, the problems of eccentric wear, abnormal wear and the like in the use process of the sliding bearing are caused due to low technical maturity, and the use reliability and the service life are influenced. For example, in the structural design of an aircraft engine plunger pump, a bearing is used as an important part for transmission support, which directly relates to the stability of the operation and the service life of the plunger pump, and the structural design of the bearing usually directly selects a standard rolling bearing or customizes a special rolling bearing according to the design requirement. Although the rolling bearing has high technical maturity and forms a series of parts which can be directly selected as a standard part, the characteristics of large volume, heavy weight, large operation noise, short service life and the like of the rolling bearing directly influence the use of the plunger pump, so that the existing plunger pump has heavy weight, large operation noise, short service life and large vibration after long-term operation, and becomes one of bottleneck factors restricting the service life and the reliability of the plunger pump.
Disclosure of Invention
The technical problems solved by the invention are as follows: a sliding bearing having a long life and a small volume is provided.
The technical scheme of the invention is as follows: a sliding bearing characterized in that: the bearing is of a cylindrical monomer structure, a raised cylindrical surface is arranged on the outer circumferential surface of the bearing, and the cylindrical surface is a positioning structure surface; conical surfaces on two sides of the cylindrical surface of the outer circumferential surface of the bearing are guiding installation surfaces, and the bottom surface of each conical surface is close to the cylindrical surface. Compared with the prior art, the sliding bearing is of a single structure, the structure is small in size, and the structure is stable and reliable. The positioning structure surface designed in the technical scheme has high positioning precision and small required installation space. The guide mounting surface designed in the technical scheme is convenient for mounting and dismounting the bearing.
Preferably, the cylindrical surface is provided with a positioning hole, and the positioning hole is a through hole and is positioned in the bearing auxiliary bearing area; the bearing auxiliary bearing area is the reverse direction of the radial load borne by the bearing. Compared with the prior art, the technical scheme has the advantages of high positioning precision, small size and volume and small required installation space.
Preferably, along the axial direction of the bearing, the inner surface of the bearing is provided with arc grooves which are symmetrical with each other; the arc-shaped grooves are all located in the bearing auxiliary bearing area, and the bearing auxiliary bearing area is the reverse direction of the radial load borne by the bearing. Compared with the prior art, the lubricating and antifriction effects are good, the heat dissipation effect is good, and the service life is long.
Preferably, the radian of single arc recess is 45, compares with prior art, and medium circulation heat radiating area is big, and the blowdown is effectual.
Preferably, the inner hole of the bearing is coated with molybdenum disulfide, and compared with the prior art, the bearing has the advantages of good lubricating and antifriction effects and strong binding force.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the bearing assembly of the present invention;
FIG. 3 is a schematic diagram of the bearing stress analysis;
fig. 4 is a sectional view B-B.
In fig. 1: 1 is the face of cylinder, 2 is the circular conical surface, and 3 is the hole, and 4 is the arc recess, and 5 are the locating hole, and 6 is the casing, and 7 is the bearing, 8 is the transmission shaft, and 9 is the locating pin.
Detailed Description
The present invention is described in further detail below. Referring to fig. 1, the present invention is a cylindrical single structure bearing for complete machine processing. A raised cylindrical surface 1 is arranged on the outer cylindrical surface of the bearing, and the cylindrical surface 1 is a positioning structure surface and is matched with the inner hole of the shell for positioning the radial position of the bearing; conical surfaces 2 on two sides of a cylindrical surface 1 on the outer circumferential surface of the bearing are guiding installation surfaces, so that the bearing is convenient to install or disassemble, and the bottom surface of each conical surface 2 is close to the cylindrical surface 1; the cylindrical surface 1 is provided with a positioning hole 5 which is a through hole and is positioned in the reverse direction area of the radial load borne by the bearing and used for positioning the circumferential and axial positions of the bearing; the inner surface of the bearing is provided with arc grooves 4 which are symmetrical to each other, the radian of a single arc groove 4 is 45 degrees, and the arc groove is positioned in the reverse direction area of the radial load borne by the bearing and used for accelerating the circulation and heat dissipation of a medium; the inner hole 3 of the bearing is coated with molybdenum disulfide for lubricating and reducing friction of the bearing and improving the allowable PV value of the inner hole 3 of the bearing.
When the bearing is installed and used, if the transmission shaft bears radial load, the stress direction of the transmission shaft needs to be determined, and the dotted line area in fig. 3 is a radial stress bearing area of the transmission shaft. When the bearing is designed and installed, the stress direction of the transmission shaft is required to be ensured to be consistent with the dotted line area of the bearing in the figure 3. The installation and use of the invention is shown in figure 2. The bearing 7 is arranged in the inner hole of the shell 6 along the axial direction, the cylindrical surface of the bearing 7 is matched with the inner hole of the shell 6, and the positioning pin 9 is arranged in the radial positioning hole 5 of the bearing and the positioning hole of the shell 6 along the radial direction, so that the bearing 7 is ensured to be fixed in the inner hole of the shell 6. The transmission shaft 8 is arranged in an inner hole of the bearing 7 along the axial direction, a moving friction pair is formed by the outer cylindrical surface of the transmission shaft 8 and the inner hole of the bearing 7, a static pressure oil film is formed on the surface of the inner hole 3 of the bearing in the working process, and meanwhile, the molybdenum disulfide lubricating coating coated on the surface further reduces the coefficient of the friction pair, improves the working environment of the inner hole 3 of the bearing and improves the allowable PV value of the inner hole 3 of the bearing; in addition, the bearing arc-shaped groove 4 accelerates the circulation flow of oil liquid, takes away heat and pollutants of a friction pair, and further optimizes and improves the working environment of the bearing 7 and the transmission shaft 8, so that the service life of the bearing is prolonged.
Claims (2)
1. A sliding bearing characterized in that: the bearing is of a cylindrical monomer structure, a raised cylindrical surface (1) is arranged on the outer circumferential surface of the bearing, and the cylindrical surface (1) is a positioning structure surface;
two sides of the cylindrical surface (1) of the outer circumferential surface of the bearing are conical surfaces, and the bottom surfaces of the conical surfaces are close to the cylindrical surface (1);
a positioning hole (5) is formed in the cylindrical surface (1), and the positioning hole (5) is located in the bearing auxiliary bearing area;
the bearing auxiliary bearing area is the reverse direction of the radial load borne by the bearing;
the inner surface of the bearing is provided with arc grooves (4) which are symmetrical with each other along the axial direction of the bearing;
the arc-shaped grooves (4) are all positioned in the bearing auxiliary bearing area; the radian of the single arc-shaped groove (4) is 45 degrees.
2. A sliding bearing according to claim 1, characterized in that: the bearing is coated with molybdenum disulfide on its inner circumferential surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811413061.5A CN109519476B (en) | 2018-11-23 | 2018-11-23 | Sliding bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811413061.5A CN109519476B (en) | 2018-11-23 | 2018-11-23 | Sliding bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109519476A CN109519476A (en) | 2019-03-26 |
| CN109519476B true CN109519476B (en) | 2020-11-13 |
Family
ID=65779101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811413061.5A Active CN109519476B (en) | 2018-11-23 | 2018-11-23 | Sliding bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109519476B (en) |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5059038A (en) * | 1990-06-29 | 1991-10-22 | Bmw Rolls-Royce Gmbh | Aerodynamic plain bearing |
| JP2004204952A (en) * | 2002-12-25 | 2004-07-22 | Japan Steel Works Ltd:The | Sliding bearing and its lubricating method |
| CN2616745Y (en) * | 2003-03-11 | 2004-05-19 | 袁祖钊 | Diesel engine axle bush sewage groove |
| JP4664254B2 (en) * | 2006-08-29 | 2011-04-06 | 株式会社神戸製鋼所 | Compressor bearing |
| JP4387402B2 (en) * | 2006-12-22 | 2009-12-16 | 株式会社神戸製鋼所 | Bearing and liquid-cooled screw compressor |
| CN201027811Y (en) * | 2007-03-26 | 2008-02-27 | 浙江双飞无油轴承有限公司 | Bimetallic bearing with sprayed lubricating layer |
| DE102007034463A1 (en) * | 2007-07-20 | 2009-01-29 | Sanofi-Aventis Deutschland Gmbh | Slide bearing and reactor hereby |
| JP5012829B2 (en) * | 2009-02-06 | 2012-08-29 | オイレス工業株式会社 | Bush bearing |
| CN202301456U (en) * | 2011-11-08 | 2012-07-04 | 重庆液动科技有限公司 | Internal gear pump bearing |
| JP6185702B2 (en) * | 2012-02-27 | 2017-08-23 | 大同メタル工業株式会社 | Slide bearing and bearing device |
| CN202579656U (en) * | 2012-02-27 | 2012-12-05 | 浙江中益机械有限公司 | Improved shaft sleeve |
| CN203395019U (en) * | 2013-04-03 | 2014-01-15 | 烟台大丰轴瓦有限责任公司 | Bearing bush applied to ship engine |
| JP6144216B2 (en) * | 2014-02-14 | 2017-06-07 | 大豊工業株式会社 | Plain bearing |
| US9976597B2 (en) * | 2015-08-25 | 2018-05-22 | Crown Iron Works Company | Bearing assembly for extractor systems |
-
2018
- 2018-11-23 CN CN201811413061.5A patent/CN109519476B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109519476A (en) | 2019-03-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9695940B2 (en) | Bidirectional lift-off circumferential shaft seal segment and a shaft seal including a plurality of the segments | |
| RU2667530C2 (en) | Rotating machine with at least one active magnetic bearing and auxiliary rolling bearings | |
| CN205350045U (en) | Gaseous journal bearing of slot type dynamic pressure | |
| CN109268303B (en) | Magnetic drive pump sliding bearing assembly and magnetic drive pump | |
| JPS6041250B2 (en) | Support device for spherical bearings | |
| CN109519476B (en) | Sliding bearing | |
| CN111365287A (en) | Bearing support assembly, machining method thereof and centrifugal compressor | |
| US6431553B1 (en) | Radially pressure balanced floating seal system | |
| CN204985140U (en) | Pneumatic cylinder with stairstepping lip limit uide bushing | |
| CN210135051U (en) | Shaft assembly and compressor comprising same | |
| CN111379619B (en) | Variable compression ratio mechanism and control method thereof | |
| EP3957858A1 (en) | Pump body assembly, compressor, and air conditioner | |
| CN102116279A (en) | 4.5ml/r ultrahigh-pressure electro-hydraulic proportional control radial plunger pump | |
| WO2010062519A1 (en) | Noise isolating rolling element bearing for a crankshaft | |
| CN220668009U (en) | Double-sliding-bearing guide sleeve supporting and guiding device | |
| CN111365281A (en) | Bearing support, air suspension compressor with bearing support and air conditioner | |
| CN204647796U (en) | A kind of centrifugal compressor combined journal and thrust bearing | |
| CN113811695A (en) | Turbocharger or hydrodynamic plain bearing having a hydrodynamic plain bearing | |
| CN220791421U (en) | Radial plunger pump for switch machine | |
| CN110714981B (en) | Dynamic pressure gas thrust bearing | |
| CN218717333U (en) | Piston pin and piston connecting rod assembly for compressor | |
| CN220396283U (en) | Fixed Cheng Zhixian bearing | |
| CN115111263B (en) | Split type gap automatic compensation bearing | |
| US10634152B2 (en) | Multi-bearing design for shaft stabilization | |
| CN212055516U (en) | Non-contact fulcrum damping bearing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |