CN115929775A - Self-lubricating spherical support used in variable temperature environment - Google Patents
Self-lubricating spherical support used in variable temperature environment Download PDFInfo
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- CN115929775A CN115929775A CN202310232214.0A CN202310232214A CN115929775A CN 115929775 A CN115929775 A CN 115929775A CN 202310232214 A CN202310232214 A CN 202310232214A CN 115929775 A CN115929775 A CN 115929775A
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- Prior art keywords
- self
- lubricating
- ball
- spherical
- supporting
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- 239000000463 material Substances 0.000 claims abstract description 21
- 229910001369 Brass Inorganic materials 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 239000010951 brass Substances 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 238000002955 isolation Methods 0.000 claims description 3
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 claims description 3
- 229910052982 molybdenum disulfide Inorganic materials 0.000 claims description 3
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 claims description 3
- ITRNXVSDJBHYNJ-UHFFFAOYSA-N tungsten disulfide Chemical compound S=[W]=S ITRNXVSDJBHYNJ-UHFFFAOYSA-N 0.000 claims description 3
- 230000001050 lubricating effect Effects 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 5
- 230000008859 change Effects 0.000 description 3
- 239000004519 grease Substances 0.000 description 3
- 239000010687 lubricating oil Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008602 contraction Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000001595 contractor effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
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- Pivots And Pivotal Connections (AREA)
- Transmission Devices (AREA)
Abstract
The invention belongs to the field of design of large-scale low-temperature test devices, and discloses a self-lubricating spherical support used in a variable-temperature environment. The surfaces of the ball rod, the ball cover, the ball seat and the sliding plate in the self-lubricating spherical support in the variable temperature environment are made of self-lubricating materials to different degrees, so that the self-lubricating spherical support has good lubricating and self-adapting performances. When the ambient temperature changes, relative motion takes place for supported part and supporting seat, and the part can freely move along the shrink direction on the one hand, and on the other hand part can be in certain extent rotation and slope, and self-lubricating spherical bearing will remain the plane contact with the supporting seat all the time at the removal in-process, realizes the support and the direction of structure. The self-lubricating spherical support under the variable temperature environment effectively solves the problems of support and guide under the variable temperature environment, avoids overlarge stress generated by a supported part, and is suitable for large-scale low-temperature devices and other working equipment under the variable temperature environment.
Description
Technical Field
The invention belongs to the field of design of large-scale low-temperature test devices, and particularly relates to a self-lubricating spherical support used in a variable-temperature environment.
Background
One of the characteristics of large-scale cryogenic devices is that the temperature is low, which determines that a large number of parts in the large-scale cryogenic device need to work in a variable temperature environment from normal temperature to 150 ℃ below zero. Due to the expansion and contraction effect of the metal material, especially for large-scale low-temperature devices, the parts therein will shrink in larger size, for example, a cylinder with a length of 7000mm, a diameter of 10000mm and a wall thickness of 20mm, and during the temperature reduction from 20 ℃ to-150 ℃, the parts will shrink in the length direction and the diameter direction by about 20mm and 30mm, respectively. Therefore, the supporting mechanism of the parts needs to have good lubricating and self-adapting performance. For the supporting structure with lubricating oil and lubricating grease, on one hand, the viscosity of the lubricating oil and the lubricating grease is increased and the lubricating performance is reduced in a low-temperature environment, and on the other hand, the volatilization and leakage of the lubricating oil and the lubricating grease pollute the wind tunnel test gas and influence the test precision.
Currently, there is a need to develop a self-lubricating spherical bearing for use in variable temperature environments.
Disclosure of Invention
The invention aims to solve the technical problem of providing a self-lubricating spherical support used in a temperature-changing environment.
The invention discloses a self-lubricating spherical support used in a temperature-changing environment, which is characterized by comprising a sliding component and a supporting component which are sequentially connected from bottom to top; the sliding assembly is placed on the upper surface of the supporting seat, the supporting assembly is used for supporting the component, after the component deforms in a variable-temperature environment, the supporting assembly drives the sliding assembly to freely slide on the upper surface of the supporting seat, and the self-lubricating spherical support realizes self-adaptive supporting of the component;
the main body of the sliding assembly is a ball seat which is a square body, the upper surface of the ball seat is covered with a ball cover, and the ball cover is fixed on the upper surface of the ball seat through a screw I and a gasket I; the lower surface of the ball seat is attached with a sliding plate, and the sliding plate is fixed on the lower surface of the ball seat through a gasket II and a screw II; a spherical cavity is formed in the combined body of the spherical cover and the ball seat, and a through hole communicated with the spherical cavity is formed in the spherical cover; self-lubricating material is coated on the inner wall of the spherical cavity;
the main body of the support component is a ball rod, the upper part of the ball rod is a rod body, external threads are arranged on the rod body, and the lower part of the ball rod is a sphere; the ball body is positioned in the spherical cavity of the sliding assembly, the ball rod penetrates out of the sliding assembly through the through hole in the ball cover, and an isolation gap is formed between the through hole and the rod body, so that the ball rod can freely rotate and tilt within a preset angle range; self-lubricating material is coated on the surface of the sphere;
the part penetrates into the ball rod, is positioned on the external thread section of the ball rod, the position of the moving part is adjusted through a belleville spring II and a nut II which are positioned below the part, and the position of the fixing part is locked and fixed through a nut I and a belleville spring I which are positioned above the part.
Furthermore, the self-lubricating spherical support is used for a large-scale low-temperature test device, and the operating temperature range is 20-150 ℃.
Furthermore, the inner wall of the spherical cavity is provided with uniformly distributed grooves, and self-lubricating materials are filled in the grooves.
Furthermore, the sliding plate is made of a polytetrafluoroethylene or brass self-lubricating material; or the lower surface of the slide plate is coated with a self-lubricating material.
Further, the self-lubricating material comprises one or a combination of more than two of tetrafluoroethylene, graphite, molybdenum disulfide and tungsten disulfide.
When the relative sliding occurs between the supported part and the supporting seat caused by the change of the environmental temperature, the sliding plate plays a role in lubrication, the supported part drives the self-lubricating spherical bearing to freely slide on the surface of the supporting seat along the contraction direction, the self-lubricating spherical bearing always keeps a supporting distance in the sliding process, and the relative position between the supported part and the supporting surface is ensured.
When the environmental temperature changes and causes the supported part to rotate and incline, the ball head of the ball rod and the ball cover and the ball seat have self-lubricating function, the ball rod is driven by the supported part to rotate and incline within a preset angle range, and the self-lubricating spherical support always keeps effective contact and support with the supporting surface during rotation and inclination.
The surfaces of the ball rod, the ball cover, the ball seat and the sliding plate in the self-lubricating spherical support in the variable temperature environment are made of self-lubricating materials in different degrees, so that the self-lubricating spherical support has good lubricating and self-adaptive performances. When the ambient temperature changes, relative motion takes place for supported part and supporting seat, and the part can freely move along the shrink direction on the one hand, and on the other hand part can rotate and slope in certain extent, and self-lubricating spherical bearing will remain the plane contact with the supporting seat all the time at the removal in-process, realizes the support and the direction of structure. The self-lubricating spherical support under the variable temperature environment effectively solves the problems of support and guide under the variable temperature environment, avoids overlarge stress generated by a supported part, and is suitable for large-scale low-temperature devices and other working equipment under the variable temperature environment.
Drawings
Fig. 1 is a schematic structural diagram of a self-lubricating spherical support in a temperature-varying environment according to the present invention.
In the figure, 1, a club; 2. a nut I; 3. a butterfly spring I; 4. a butterfly spring II; 5. a nut II; 6. a screw I; 7. a gasket I; 8. a ball cover; 9. a ball seat; 10. a sliding plate; 11. a gasket II; 12. a screw II; 13. a component; 14. and (4) supporting the base.
Description of the preferred embodiment
The present invention will be described in detail below with reference to the accompanying drawings and examples.
Example 1
The self-lubricating spherical support for the variable-temperature environment is applied to internal support of a large-scale low-temperature test device.
As shown in fig. 1, the self-lubricating spherical bearing for use in a temperature varying environment of the present embodiment includes a sliding assembly and a supporting assembly, which are connected in sequence from bottom to top; the sliding assembly is placed on the upper surface of the supporting seat 14, the supporting assembly is used for supporting the component 13, after the component 13 deforms in a temperature-changing environment, the supporting assembly drives the sliding assembly to freely slide on the upper surface of the supporting seat 14, and the self-lubricating spherical support realizes self-adaptive supporting of the component 13;
the main body of the sliding assembly is a ball seat 9, the ball seat 9 is a square body, a ball cover 8 covers the upper surface of the ball seat 9, and the ball cover 8 is fixed on the upper surface of the ball seat 9 through a screw I6 and a gasket I7; a sliding plate 10 is attached to the lower surface of the ball seat 9, and the sliding plate 10 is fixed to the lower surface of the ball seat 9 through a gasket II 11 and a screw II 12; a spherical cavity is formed in the combination body of the spherical cover 8 and the ball seat 9, and a through hole communicated with the spherical cavity is formed in the spherical cover 8; self-lubricating material is coated on the inner wall of the spherical cavity;
the main body of the supporting component is a ball arm 1, the upper part of the ball arm 1 is a rod body, external threads are arranged on the rod body, and the lower part of the ball arm 1 is a sphere; the ball body is positioned in the spherical cavity of the sliding assembly, the ball rod 1 penetrates out of the sliding assembly through the through hole in the ball cover 8, and an isolation gap is formed between the through hole and the rod body, so that the ball rod 1 can freely rotate and tilt within a preset angle range; self-lubricating material is coated on the surface of the sphere;
the member 13 is inserted into the shaft 1, positioned at the external thread section of the shaft 1, the position of the moving member 13 is adjusted by the Belleville spring II 4 and the nut II 5 positioned below the member 13, and the position of the fixing member 13 is locked by the nut I2 and the Belleville spring I3 positioned above the member 13.
Furthermore, the self-lubricating spherical support is used for a large-scale low-temperature test device, and the operating temperature range is 20-150 ℃.
Furthermore, the inner wall of the spherical cavity is provided with uniformly distributed grooves, and self-lubricating materials are filled in the grooves.
Further, the sliding plate 10 is made of a self-lubricating polytetrafluoroethylene material or a self-lubricating brass material; or the lower surface of the slide plate 10 is coated with a self-lubricating material.
Further, the self-lubricating material comprises one or a combination of more than two of tetrafluoroethylene, graphite, molybdenum disulfide and tungsten disulfide.
The temperature range of the large-scale low-temperature test device is 20 ℃ to-150 ℃, taking the temperature reduction process as an example, in the temperature changing process, when the temperature change causes relative sliding between the supported part 13 and the supporting seat 14, the sliding plate 10 plays a lubricating role, so that the supported part 13 drives the self-lubricating spherical support to freely slide on the surface of the supporting seat 14 along the contraction direction, the self-lubricating spherical support always keeps the supporting distance in the sliding process, and the relative position between the supported part 13 and the supporting surface 14 is ensured. When the part 13 rotates and inclines due to temperature change, a self-lubricating function is realized among the ball head of the ball rod 1, the ball cover 8 and the ball seat 9, the part 13 drives the ball rod 1 to rotate and incline within a preset angle range, and the self-lubricating spherical support always keeps effective contact and support with a support surface under the elastic action of the butterfly spring I3 and the butterfly spring II 4 during rotation and inclination.
In a large-scale low-temperature test device, the self-lubricating spherical support for the variable-temperature environment is adopted by the supporting and guiding mechanism between the inner section and the pressure-bearing shell, so that the supporting and guiding problems of the large-scale low-temperature test device are effectively solved.
Although the embodiments of the present invention have been disclosed above, it is not limited to the applications listed in the description and the embodiments, but it can be applied to various fields suitable for the present invention. Additional modifications and refinements will readily occur to those skilled in the art without departing from the principles of the present invention, and the present invention is not limited to the specific details and illustrations shown and described herein.
Claims (5)
1. A self-lubricating spherical support used in a temperature-changing environment is characterized by comprising a sliding assembly and a supporting assembly which are sequentially connected from bottom to top; the sliding assembly is placed on the upper surface of the supporting seat (14), the supporting assembly is used for supporting the component (13), after the component (13) deforms in a temperature-changing environment, the supporting assembly drives the sliding assembly to freely slide on the upper surface of the supporting seat (14), and the self-lubricating spherical support realizes self-adaption of the supporting component (13);
the main body of the sliding assembly is a ball seat (9), the ball seat (9) is a square body, a ball cover (8) covers the upper surface of the ball seat (9), and the ball cover (8) is fixed on the upper surface of the ball seat (9) through a screw I (6) and a gasket I (7); the lower surface of the ball seat (9) is attached with a sliding plate (10), and the sliding plate (10) is fixed on the lower surface of the ball seat (9) through a gasket II (11) and a screw II (12); a spherical cavity is formed in the combination body of the spherical cover (8) and the ball seat (9), and a through hole communicated with the spherical cavity is formed in the spherical cover (8); self-lubricating material is coated on the inner wall of the spherical cavity;
the main body of the support component is a ball rod (1), the upper part of the ball rod (1) is a rod body, external threads are arranged on the rod body, and the lower part of the ball rod (1) is a sphere; the ball body is positioned in the spherical cavity of the sliding assembly, the ball rod (1) penetrates out of the sliding assembly through the through hole in the ball cover (8), and an isolation gap is formed between the through hole and the rod body, so that the ball rod (1) can freely rotate and tilt within a preset angle range; self-lubricating material is coated on the surface of the sphere;
the part (13) penetrates into the cue (1), is positioned on the external thread section of the cue (1), the position of the moving part (13) is adjusted through the belleville spring II (4) and the nut II (5) which are positioned below the part (13), and the position of the fixing part (13) is locked through the nut I (2) and the belleville spring I (3) which are positioned above the part (13).
2. The self-lubricating spherical bearing for use in variable temperature environments of claim 1, wherein the self-lubricating spherical bearing is for use in large cryogenic test apparatus operating at temperatures ranging from 20 ℃ to-150 ℃.
3. The self-lubricating spherical bearing for use in variable temperature environments according to claim 1, wherein the inner wall of the spherical cavity is provided with uniformly distributed grooves filled with self-lubricating materials.
4. The self-lubricating spherical support for variable temperature environments according to claim 1, characterized in that the sliding plate (10) is made of self-lubricating polytetrafluoroethylene or brass material; or the lower surface of the sliding plate (10) is coated with a self-lubricating material.
5. The self-lubricating spherical bearing used under variable temperature environments according to any one of claims 1 to 3, wherein the self-lubricating material comprises one or a combination of more than two of tetrafluoroethylene, graphite, molybdenum disulfide and tungsten disulfide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310232214.0A CN115929775A (en) | 2023-03-13 | 2023-03-13 | Self-lubricating spherical support used in variable temperature environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310232214.0A CN115929775A (en) | 2023-03-13 | 2023-03-13 | Self-lubricating spherical support used in variable temperature environment |
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| Publication Number | Publication Date |
|---|---|
| CN115929775A true CN115929775A (en) | 2023-04-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310232214.0A Pending CN115929775A (en) | 2023-03-13 | 2023-03-13 | Self-lubricating spherical support used in variable temperature environment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116136448A (en) * | 2023-04-20 | 2023-05-19 | 中国航空工业集团公司沈阳空气动力研究所 | Supporting device and supporting method for wind tunnel adjustable side wall plate |
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| CN213711601U (en) * | 2020-10-19 | 2021-07-16 | 宁波市鄞州超杰汽车零部件有限公司 | Ball joint structure with oil filling hole |
| CN213711602U (en) * | 2020-10-19 | 2021-07-16 | 宁波市鄞州超杰汽车零部件有限公司 | Ball joint structure with lubricating groove |
-
2023
- 2023-03-13 CN CN202310232214.0A patent/CN115929775A/en active Pending
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| JP2000065064A (en) * | 1998-08-25 | 2000-03-03 | Koyo Seiko Co Ltd | Spherical bearing |
| US20050169562A1 (en) * | 2004-01-29 | 2005-08-04 | Korea Advanced Institute Of Science And Technology | Bearing assembly and method for manufacturing the same |
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| CN116136448A (en) * | 2023-04-20 | 2023-05-19 | 中国航空工业集团公司沈阳空气动力研究所 | Supporting device and supporting method for wind tunnel adjustable side wall plate |
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Application publication date: 20230407 |