CN110131317B - Bearing cover with damping material layer and sliding bearing - Google Patents
Bearing cover with damping material layer and sliding bearing Download PDFInfo
- Publication number
- CN110131317B CN110131317B CN201910328434.7A CN201910328434A CN110131317B CN 110131317 B CN110131317 B CN 110131317B CN 201910328434 A CN201910328434 A CN 201910328434A CN 110131317 B CN110131317 B CN 110131317B
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- Prior art keywords
- bearing
- shaft hole
- bearing cover
- damping material
- material layer
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- 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
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/02—Rigid support of bearing units; Housings, e.g. caps, covers in the case of sliding-contact bearings
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- 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
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/08—Rigid support of bearing units; Housings, e.g. caps, covers for spindles
- F16C35/10—Rigid support of bearing units; Housings, e.g. caps, covers for spindles with sliding-contact bearings
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Support Of The Bearing (AREA)
Abstract
The invention discloses a bearing cap with a damping material layer and a sliding bearing, wherein the bearing cap comprises a bearing cap fastening part, a bearing cap shaft hole part and the damping material layer; one part of the damping material layer is arranged between the bearing cover fastening part and the bearing cover shaft hole part and divides the bearing cover fastening part and the bearing cover shaft hole part into two parts which are not in contact with each other; and the other part of the damping material layer covers the mounting surface of the lower part of the bearing cover shaft hole part adjacent to the bearing seat, so that the bearing cover shaft hole part is not in direct contact with the bearing seat after being mounted on the bearing seat. The sliding bearing has a bearing cap as described above. According to the invention, the damping material layer is arranged between the bearing cover shaft hole part and the bearing cover fastening part as well as between the bearing seat and the bearing cover shaft hole part, so that the transmission path of the structural vibration from the bearing cover to the bearing seat is completely isolated, the structural vibration is buffered and absorbed in the damping material layer, and is greatly attenuated, and the purposes of vibration isolation and noise reduction are realized.
Description
Technical Field
The present invention relates to a sliding bearing, and more particularly to a bearing cap with a damping material layer and a sliding bearing.
Background
Plain bearings are commonly used to support and lubricate shaft-like parts. The shaft parts bear dynamic radial load caused by the driven part when rotating, the shaft necks of the shaft parts are in contact with shaft hole materials and transmit fluctuating contact load due to the fluctuating radial load and unbalanced inertia force of the shaft parts, and the shaft necks can jump in the shaft holes in severe conditions. Such fluctuating radial contact loads or run-out of the journal in the shaft bore can produce large structural vibrations in the plain bearing. In many cases the journal is in contact with the bearing cap of the plain bearing, so the plain bearing cap is an important structural vibration transmission path. Conventional sliding bearings and bearing caps take into account friction and lubrication of parts and the bearing cap's holding strength, and lack concerns about structural vibrations transmitted by the bearing cap. Due to the improvement of the operation speed and the power of the mechanical mechanism, the structural vibration generated by the shaft parts is larger and larger, and the structural vibration is transmitted through the sliding bearing, so that the problem of large body vibration or noise can be caused.
Disclosure of Invention
The invention aims to provide a bearing cover with a damping material layer for isolating structural vibration transmitted by the bearing cover of a sliding bearing and the sliding bearing.
In order to achieve the purpose, the bearing cover with the damping material layer comprises a bearing cover fastening part, a bearing cover shaft hole part and the damping material layer; one part of the damping material layer is arranged between the bearing cover fastening part and the bearing cover shaft hole part and divides the bearing cover fastening part and the bearing cover shaft hole part into two parts which are not in contact with each other; and the other part of the damping material layer covers the mounting surface of the lower part of the bearing cover shaft hole part adjacent to the bearing seat, so that the bearing cover shaft hole part is not in direct contact with the bearing seat after being mounted on the bearing seat. The damping material layer can be made of plastic, rubber, viscoelastic materials of various high molecular compounds and the like which have damping and buffering effects relative to the bearing material.
Preferably, the bearing cap fastening portion, the bearing cap shaft hole portion and the damping material layer are of an integral structure.
Preferably, the damping material layer is disposed in a gap between the bearing cap shaft hole portion and the bearing cap fastening portion and on a mounting surface of a lower portion of the bearing cap shaft hole portion by injection molding or vulcanization.
Preferably, the lower mounting surface of the bearing cap shaft hole portion is just flush with the lower end surface of the bearing cap fastening portion after being covered by the damping material layer.
Preferably, a shaft hole notch is formed in the middle lower part of the bearing cover shaft hole part, the left part and the right part of the bearing cover shaft hole part are of symmetrical structures, and the bearing cover shaft hole part respectively comprise an upper flange, a groove and a lower flange; the number of the bearing cover fastening parts is two, and one end of each bearing cover fastening part, which is adjacent to the bearing cover shaft hole part, is provided with a transverse flange; and the transverse flanges of the two bearing cover fastening parts are respectively matched with the grooves at the left part and the right part of the bearing cover shaft hole part, and a gap with certain width is formed between the transverse flanges and the grooves so as to accommodate the damping material layer.
Preferably, the outer side spacing of the lower flanges of the left and right portions of the bearing cover shaft hole portion is larger than the outer side spacing of the upper flanges of the left and right portions. I.e. the lower flange extends suitably outwards to improve the overall strength of the bearing cap
The invention also provides a sliding bearing with the bearing cover, which comprises a bearing seat and the bearing cover.
Preferably, the bearing cover is fixed on the bearing seat through a fastener arranged on the fastening part of the bearing cover, so that a complete bearing hole is formed between the shaft hole part of the bearing cover and the bearing seat.
Compared with the prior art, the invention has the beneficial effects that: according to the invention, the damping material layer is arranged between the bearing cover shaft hole part and the bearing cover fastening part as well as between the bearing cover shaft hole part and the bearing seat, so that the bearing cover shaft hole part, the bearing cover fastening part and the bearing seat are completely isolated and isolated, and a transmission path of structural vibration from the bearing cover to the bearing seat is completely isolated, so that the structural vibration is buffered and absorbed in the damping material layer, and is greatly attenuated, and the purposes of vibration isolation and noise reduction are realized.
Drawings
Fig. 1 is a perspective view of a sliding bearing according to the present invention.
Fig. 2 is an exploded view of the plain bearing of fig. 1.
Fig. 3 is a schematic structural view of the bearing cap in fig. 1.
Fig. 4 is an exploded view of the bearing cap of fig. 3 (omitting the damping material layer).
Fig. 5 is a schematic view of the cross-sectional structure of the plain bearing of fig. 1 perpendicular to the journal.
Wherein: bearing cap fastening portion 100, damping material layer 101, bearing cap shaft hole portion 102, shaft hole notch 103, upper flange 104, groove 105, lower flange 106, transverse flange 107, bearing seat 200, journal 300, fastener 400
Detailed Description
The invention is described in further detail below with reference to the figures and the specific embodiments.
As shown in fig. 1 to 5, the sliding bearing of the present invention includes a bearing seat 200 and a bearing cap with a damping material layer. Wherein:
the bearing cap includes a bearing cap fastening portion 100, a bearing cap shaft hole portion 102, and a damping material layer 101 that are spaced apart from each other.
The middle lower part of the bearing cover shaft hole part 102 is provided with a shaft hole notch 103, and the left part and the right part of the bearing cover shaft hole part 102 are of symmetrical concave structures and specifically comprise an upper flange 104, a groove 105 and a lower flange 106. The outer spacing of the lower flanges 106 of the left and right portions of the bearing cap shaft bore portion 102 is greater than the outer spacing of the upper flanges 104 of the left and right portions.
The number of the bearing cap fastening portions 100 is two, and each of the bearing cap fastening portions 100 has an L-shape in which one end thereof adjacent to the bearing cap shaft hole portion 102 is laid horizontally, and a horizontal flange 107 is provided at one end thereof adjacent to the bearing cap shaft hole portion 102. The lateral flanges 107 of the two bearing cap fastening portions 100 are fitted into the grooves 105 of the left and right portions of the bearing cap shaft hole portion 102, respectively, and gaps of a certain width are left between the lateral flanges 107 and the grooves 105 and between the lower flanges 106 and the lower inner side faces of the bearing cap fastening portions 100 to accommodate the damping material layer 101.
The damping material layer 101 includes two connected portions, a portion of which is disposed in the gap between the bearing cap shaft hole portion 102 and the bearing cap fastening portion 100, and divides the latter two into two portions that are not in contact with each other; another portion is provided on the mounting surface of bearing cap shaft hole portion 102 adjacent to bearing housing 200 so that bearing cap shaft hole portion 102 does not directly contact bearing housing 200 after being mounted on bearing housing 200. On the other hand, the lower mounting surface of the bearing cap shaft hole portion 102 is just flush with the lower end surface of the bearing cap fastening portion 100 after being covered with the damping material layer 101.
The damping material layer 101 and the bearing cap fastening portion 100 are of an integral structure, and the manufacturing process comprises the following four steps:
in a first step, the bearing cap fastening portion 100 and the bearing cap shaft bore portion 102 are cast or machined.
Secondly, the bearing cover fastening part 100 and the bearing cover shaft hole part 102 are partially placed into a special injection mold or vulcanization mold, a gap with a certain width is formed between the bearing cover fastening part 100 and the bearing cover shaft hole part 102, and a gap equal to the gap is reserved between the lower end face of the bearing cover shaft hole part 102 and the mold;
and thirdly, filling the damping material layer into the gap between the bearing cover fastening part 100 and the bearing cover shaft hole part 102 and the mounting surface of the bearing cover shaft hole part 102 adjacent to the bearing seat 200 through processes of injection molding, vulcanization and the like to form the bearing cover with the damping material layer in an integrated structure.
And fourthly, taking out the integrated bearing cover from a special injection or vulcanization mold, and performing finish machining.
After finishing, the bearing journal 300 and the bearing housing 200 are mounted together by fasteners 400. A certain gap is formed between the journal 300 and the shaft hole of the bearing cap shaft hole part 102 and the shaft hole of the bearing seat 200, so that the journal 300 can flexibly rotate.
The working principle of the device is as follows: when the journal 300 contacts the bearing cap shaft hole 102 to generate structural vibration, the structural vibration in the bearing cap shaft hole 102 is transmitted to the bearing cap fastening part 100 and the bearing seat 200, and since the damping material layer 101 exists between the bearing cap shaft hole 102 and the bearing cap fastening part 100 and the damping material layer 101 also exists between the bearing cap shaft hole 102 and the bearing seat 200, the structural vibration is absorbed and buffered by the damping material layer 101 when being transmitted to the bearing cap fastening part 100 and the bearing seat 200, thereby achieving the purpose of vibration isolation and noise reduction.
Claims (8)
1. The utility model provides a take bearing cap of damping material layer which characterized in that: comprises a bearing cover fastening part (100), a bearing cover shaft hole part (102) and a damping material layer (101); a part of the damping material layer (101) is arranged between the bearing cover fastening part (100) and the bearing cover shaft hole part (102) and divides the bearing cover fastening part and the bearing cover shaft hole part into two parts which are not in contact with each other; and the other part of the damping material layer (101) covers the mounting surface of the lower part of the bearing cover shaft hole part (102) adjacent to the bearing seat (200), so that the bearing cover shaft hole part (102) is not in direct contact with the bearing seat (200) after being mounted on the bearing seat (200).
2. Bearing cap with a layer of damping material according to claim 1, characterized in that: the bearing cap fastening part (100), the bearing cap shaft hole part (102) and the damping material layer (101) are of an integrated structure.
3. Bearing cap with a layer of damping material according to claim 2, characterized in that: the damping material layer (101) is arranged in a gap between the bearing cover shaft hole part (102) and the bearing cover fastening part (100) and on a mounting surface at the lower part of the bearing cover shaft hole part (102) in an injection molding or vulcanization mode.
4. A bearing cap with a layer of damping material according to any one of claims 1 to 3, wherein: the lower mounting surface of the bearing cover shaft hole part (102) is just flush with the lower end surface of the bearing cover fastening part (100) after being covered by the damping material layer (101).
5. A bearing cap with a layer of damping material according to any one of claims 1 to 3, wherein: the middle lower part of the bearing cover shaft hole part (102) is provided with a shaft hole notch (103), the left part and the right part of the bearing cover shaft hole part (102) are of symmetrical structures, and the left part and the right part of the bearing cover shaft hole part both comprise an upper flange (104), a groove (105) and a lower flange (106); the number of the bearing cover fastening parts (100) is two, and one end of each bearing cover fastening part (100) adjacent to the bearing cover shaft hole part (102) is provided with a transverse flange (107); the transverse flanges (107) of the two bearing cover fastening parts (100) are respectively matched with the grooves (105) of the left part and the right part of the bearing cover shaft hole part (102), and a gap with a certain width is formed between the transverse flanges (107) and the grooves (105) to accommodate the damping material layer (101).
6. Bearing cap with a layer of damping material according to claim 5, characterized in that: the outer side spacing of the lower flanges (106) of the left part and the right part of the bearing cover shaft hole part (102) is larger than the outer side spacing of the upper flanges (104) of the left part and the right part.
7. A plain bearing having a bearing cap according to any one of claims 1 to 6, characterized in that: comprises a bearing seat (200) and the bearing cover.
8. A plain bearing according to claim 7, wherein: the bearing cover is fixed on the bearing seat (200) through a fastener (400) arranged on the bearing cover fastening part (100), so that a complete bearing hole is formed between the bearing cover shaft hole part (102) and the bearing seat (200).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910328434.7A CN110131317B (en) | 2019-04-23 | 2019-04-23 | Bearing cover with damping material layer and sliding bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910328434.7A CN110131317B (en) | 2019-04-23 | 2019-04-23 | Bearing cover with damping material layer and sliding bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110131317A CN110131317A (en) | 2019-08-16 |
| CN110131317B true CN110131317B (en) | 2020-04-03 |
Family
ID=67570785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910328434.7A Active CN110131317B (en) | 2019-04-23 | 2019-04-23 | Bearing cover with damping material layer and sliding bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110131317B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2137309Y (en) * | 1992-06-30 | 1993-06-30 | 天津城市建设学院 | Split sliding bearing made of ceramics |
| KR20050101928A (en) * | 2004-04-20 | 2005-10-25 | 현대자동차주식회사 | Mounting apparatus of journal bearing cab |
| CN101333998A (en) * | 2008-07-22 | 2008-12-31 | 株洲时代新材料科技股份有限公司 | Elastic support installation method for wind power plant and its elastic element |
| CN205618557U (en) * | 2016-05-09 | 2016-10-05 | 王洪铭 | Bearing mount pad |
| CN208040953U (en) * | 2018-03-29 | 2018-11-02 | 响水县永恒传动件制造有限公司 | A kind of Noval bearing seat |
-
2019
- 2019-04-23 CN CN201910328434.7A patent/CN110131317B/en active Active
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| Publication number | Publication date |
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| CN110131317A (en) | 2019-08-16 |
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