CN212928520U - Sealing bearing structure of underwater rotating mechanical shaft - Google Patents
Sealing bearing structure of underwater rotating mechanical shaft Download PDFInfo
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- CN212928520U CN212928520U CN202020693532.9U CN202020693532U CN212928520U CN 212928520 U CN212928520 U CN 212928520U CN 202020693532 U CN202020693532 U CN 202020693532U CN 212928520 U CN212928520 U CN 212928520U
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Abstract
The utility model provides a sealed bearing structure of rotary machine axle has under water included slide bearing axle bush, bearing frame and rotary machine axle, and the slide bearing axle bush comprises 2 or 2 above bushings and 1 tile base, and the annular bush of circle adopts the combined material machine-shaping that has good wear resistance and self-lubricating property, and the annular tile base of circle adopts steel machine-shaping, the utility model has the advantages that: the sealing bearing of the underwater rotating mechanical shaft can play a role in supporting the moving and static parts and has a water sealing function. By utilizing the adsorption effect of a friction pair interface and the viscous effect of lubricating grease when a rotating mechanical shaft rotates, the sliding friction surface is lubricated for a long time, and water can be effectively prevented from entering the inside of the bearing. A plurality of axial inclined grooves are processed on the circumferential surface of the shaft neck of the rotating mechanical shaft, which corresponds to the inner diameter of the outer side of the shaft neck, so that dynamic pressure is formed while the rotating mechanical shaft rotates, and water can be further prevented from entering. Compared with the existing underwater bearing and sealing structure, the underwater bearing and sealing structure has the advantages of simple structure, low cost, convenience and quickness in processing and manufacturing and the like.
Description
Technical Field
The patent of the utility model relates to a sound part of rotating machinery axle supports and sealed bearing structure under water belongs to the bearing field of making, is particularly useful for having the sealed bearing structure that sound part supported and sealed function under water.
Background
At present, rolling bearings or metal tile sliding bearings are adopted for supporting moving and static parts of the ship underwater main shaft support at home and abroad, the underwater sealing function is realized by another sealing part, and the structure is complex. Once the sealing parts leak, water can enter the inside of the bearing to cause damage to the bearing, and even serious accidents can be caused.
Disclosure of Invention
The utility model aims to solve the problems existing in the prior art, the invention provides a sealing structure which is simple, and the processing and manufacturing are convenient and fast, and the sealing bearing of the underwater rotating mechanical shaft can play the supporting role of moving and static parts and has the water sealing function at the same time.
A sealing bearing structure of an underwater rotating mechanical shaft comprises a sliding bearing bush, a bearing block and a rotating mechanical shaft. The sliding bearing bush comprises 2 or more than 2 bushings and 1 bush base, the annular bushing is formed by machining a composite material with good wear resistance and self-lubricating property, the annular bush base is formed by machining a steel material, and the outer diameter of the plurality of bushings is fixed in the middle of the inner diameter of the bush base to form the sliding bearing bush. The outer diameter of the bearing bush of the sliding bearing is fixed in the middle of the bearing seat, the inner diameter of the outer side shaft bush and the inner diameter of the inner side shaft bush form friction pairs with the surface of a shaft neck of a rotating mechanical shaft respectively, a ring-shaped oil storage groove is formed in the position, corresponding to a gap between the two shaft bushes, of the shaft neck of the rotating mechanical shaft, the position of the oil storage groove corresponds to the gap between the two shaft bushes and an oil filling hole of a bush base, and the oil filling hole of the bearing seat and the oil filling.
The sealing bearing structure of the underwater rotating mechanical shaft adopts grease lubrication, lubricating grease is pressurized by an oil pump and is connected to the oil holes of the bearing seat and the bush base through pipelines to reach the friction surface between the inner diameter of the bush and the surface of the shaft neck of the rotating mechanical shaft, and the oil pump can automatically start and stop to control the oil injection pressure according to the consumption condition of the lubricating grease during operation. The adsorption effect of the friction pair interface and the viscous effect of the lubricating grease when the rotating mechanical shaft rotates can lubricate the sliding friction surface for a long time, and the lubricating grease can effectively prevent water from entering the bearing because the pressure of the lubricating grease is greater than the pressure of water depth.
A plurality of axial inclined grooves are processed on the circumferential surface of the shaft neck of the rotating mechanical shaft, corresponding to the inner diameter of the outer side of the shaft neck of the rotating mechanical shaft, dynamic pressure can be formed by the action principle similar to an inclined gear pump or a blade, water can be prevented from entering the grooves, and the number and the inclined angle of the grooves are in inverse proportion to the rotating speed of the rotating mechanical shaft.
The sliding bearing bush can be divided into a plurality of sections in the circumferential direction to form a whole circle structure, but the combination plane must be ensured to be tight and not to leak water.
The utility model has the advantages that: the sealing bearing of the underwater rotating mechanical shaft can play a role in supporting the moving and static parts and has a water sealing function. By utilizing the adsorption effect of a friction pair interface and the viscous effect of lubricating grease when a rotating mechanical shaft rotates, the sliding friction surface is lubricated for a long time, and water can be effectively prevented from entering the inside of the bearing. And a plurality of axial inclined grooves can be processed on the circumferential surface of the shaft neck of the rotating mechanical shaft corresponding to the outer inner diameter of the shaft neck, so that dynamic pressure is formed while the rotating mechanical shaft rotates, and water can be further prevented from entering. Compared with the existing underwater bearing and sealing structure, the underwater bearing and sealing structure has the advantages of simple structure, low cost, convenience and quickness in processing and manufacturing and the like.
Description of the drawings:
FIG. 1 is a partial cross-sectional view of a sealed bearing of an underwater rotary machine shaft;
FIG. 2 is a partial view of an underwater rotary machine shaft;
wherein: 1. the bearing comprises a rotating machine shaft, 1-2 oil storage tanks, 1-3 outer journals, 1-4 inner journals, 1-5 inclined grooves, 2 bearing seats, 2-2 oil injection holes of the bearing seats, 3 bush bases, 3-1 oil injection holes of the bush bases, 4-1 outer bushings, 4-2 inner bushings and 4-3 inner diameters of the bushings.
The specific implementation mode is as follows:
the sliding bearing bush consists of an outer side bush (4-1), an inner side bush (4-2) and a bush base (3), wherein the bush is processed into a ring shape by polytetrafluoroethylene with good wear resistance and self-lubricating property, and the thickness of the bush is about 5 mm; the bush base (3) is processed into a ring shape by adopting common steel, the outer diameters of the outer side bush (4-1) and the inner side bush (4-2) are adhered to the middle of the inner diameter of the bush base by using epoxy resin glue to form a sliding bearing bush, the outer diameter of the sliding bearing bush is fixed in the middle of the bearing seat (2), the bush base and the bearing seat are respectively provided with an oil filling hole, and the oil filling hole (3-1) of the bush base is concentric with the oil filling hole (2-2) of the bearing seat. The inner diameter (4-3) of the shaft bushing and the surface of the shaft neck of the rotating machine shaft form a friction pair, the shaft neck of the rotating machine shaft is provided with a ring-shaped oil storage groove (1-2) at a position corresponding to a gap between the two shaft bushings, and the oil storage groove must correspond to the gap between the two shaft bushings, the oil filling hole of the bush base and the oil filling hole of the bearing seat, so that lubricating grease can reach the inner diameter of the shaft bushing and the friction surfaces of the outer shaft neck (1-3) and the inner shaft neck (1-4) of the rotating machine shaft through the oil filling hole of the bearing seat and the oil filling hole of the bush base.
The implementation example adopts lithium-based lubricating grease, the bearing seat oil injection hole (2-2) is connected to a lubricating grease oil pump through an oil pipeline, the oil pump is automatically started and stopped to control the oil injection pressure according to the consumption condition of the lubricating grease during operation, and the lubricating grease pressure must be greater than the water depth pressure.
8 axial oblique grooves (1-5) are machined on the circumferential surface of an outer journal (1-3) of a rotating machine shaft, and the oblique angle of each groove is 40 degrees.
Claims (4)
1. The utility model provides a sealed bearing structure of rotatory mechanical axis under water, has included slide bearing axle bush, bearing frame and rotatory mechanical axis, and the slide bearing axle bush comprises 2 or 2 above bushings and 1 tile base, its characterized in that: the annular bush of circle adopts the combined material machine-shaping that has wear resistance and self-lubricating ability, the annular bush base of circle adopts steel machine-shaping, the external diameter of a plurality of bush is fixed and is constituteed the slide bearing axle bush in the middle of the internal diameter of bush base, the external diameter of slide bearing axle bush is fixed in the middle of the bearing frame, the internal diameter of outside bush and the internal diameter of inboard bush form the friction pair with the journal surface of rotating machinery axle respectively, the position in clearance has a ring type oil storage tank between two bushes is being corresponded to the journal of rotating machinery axle, the oil storage tank corresponds the oil filler point of clearance between two bushes and bush base, the oil filler point of bearing frame and the oil filler point of.
2. The seal bearing structure of an underwater rotary machine shaft according to claim 1, further characterized by: the sealing bearing structure of the underwater rotating mechanical shaft adopts grease lubrication, and lubricating grease is pressurized by an oil pump and is connected to an oil filling hole of a bearing seat and an oil filling hole of a bush base through a pipeline to reach the friction surface between the inner diameter of the bush and the surface of the shaft neck of the rotating mechanical shaft.
3. The seal bearing structure of an underwater rotary machine shaft according to claim 1, further characterized by: the rotary mechanical shaft is provided with a plurality of axial inclined grooves on the circumferential surface of the outer journal, and the number and the oblique angle of the grooves are in inverse proportion to the rotating speed of the rotary mechanical shaft.
4. The seal bearing structure of an underwater rotary machine shaft according to claim 1, further characterized by: the sliding bearing bush can be divided into a plurality of sections in the circumferential direction to form a whole circle structure, but the combination plane must be ensured to be tight and not to leak water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020693532.9U CN212928520U (en) | 2020-04-29 | 2020-04-29 | Sealing bearing structure of underwater rotating mechanical shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020693532.9U CN212928520U (en) | 2020-04-29 | 2020-04-29 | Sealing bearing structure of underwater rotating mechanical shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212928520U true CN212928520U (en) | 2021-04-09 |
Family
ID=75314482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020693532.9U Active CN212928520U (en) | 2020-04-29 | 2020-04-29 | Sealing bearing structure of underwater rotating mechanical shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212928520U (en) |
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2020
- 2020-04-29 CN CN202020693532.9U patent/CN212928520U/en active Active
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