CN2727484Y - Abrasion resistant bearing bush for large-scale electric machine - Google Patents
Abrasion resistant bearing bush for large-scale electric machine Download PDFInfo
- Publication number
- CN2727484Y CN2727484Y CN 200420029730 CN200420029730U CN2727484Y CN 2727484 Y CN2727484 Y CN 2727484Y CN 200420029730 CN200420029730 CN 200420029730 CN 200420029730 U CN200420029730 U CN 200420029730U CN 2727484 Y CN2727484 Y CN 2727484Y
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- bearing shell
- abrasion resistant
- insulation layer
- layer
- wear
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Abstract
An abrasion resistant bearing bush for large-scale electric machines belongs to the technical field of bearings, which is used for solving the technical problem that the insulation layer of the back of a bearing bush is easy to be abraded and has the technical proposal that the external surface of the insulation layer of the back of a bearing bush is a slippery semicylindrical surface, and the external surface of the insulation layer is provided with an abrasion resistant protective layer. The utility model improves bearing bushes of slide bearings of large-scale electric machines, firstly, the structure of the insulation layer is reasonably arranged; secondly, the insulation layer is attached with an abrasion resistant protective layer. The improvement can effectively enhance the abrasion resistant property of bearing bushes and reduce the maintenance cost and the overhaul time of devices, so the economic benefit is considerable. The service life of bearing bushes can be increased 6-7 times. The utility model has the advantages of simple structure and easy realization with small investment and obvious effects when especially used in the transformation of the existing devices.
Description
Technical field
The utility model relates to the sliding bearing of a kind of mechanical component, particularly large-size machine, belongs to technical field of bearings.
Background technique
The sliding bearing insulating method that is adopted on the large-size machine that industry is used normally is provided with one deck insulating material with the back at bearing shell and realizes, but along with prolong service time, insulating material is is progressively worn and torn, particularly in the bigger transmission of motor shaft vibration, following watt of isolation layer wearing and tearing are comparatively serious, mismatch error increases, coaxiality error exceeds standard so that cause, motor rotates problems such as noise increases, the motor shaft rotation is not steady, also can cause related components to damage when serious, even the bearing shell discharge is damaged.Use comparatively general Siemens's motor to be example with industrial, E13143-01 type Siemens motor bearing structure is referring to Fig. 1, the recess at (Siemens's motor of other model also often has similar problem) bearing shell back is provided with isolation layer, the surface of contact of isolation layer and bearing shell supporting base is the stage formula, show through operation, bearing shell supporting base and isolation layer are less at stage place surface of contact, are the positions of the easiest generation wearing and tearing.Motor turned round 1～2 month continuously, and this place's gauge wear of lower bearing can reach 1 millimeter, thereby made motor shaft that serious disalignment phenomenon take place, and influenced motor and normally moved, and therefore can only change bearing shell.
Summary of the invention
Technical problem to be solved in the utility model is: overcome the defective of above-mentioned prior art and provide a kind of isolation layer durable wear, bearing shell life cycle the long wear-resisting type bearing shell that is used for large-size machine.
The alleged problem of the utility model is solved by following technological scheme:
A kind of wear-resisting type bearing shell that is used for large-size machine, the bearing shell back is provided with isolation layer, and its specialization is: described isolation layer outer surface is smooth semi-cylindrical, is provided with anti-wear protective layer on the isolation layer outer surface.
The above-mentioned wear-resisting type bearing shell that is used for large-size machine, described anti-wear protective layer is the copper sheet layer, the copper sheet layer thickness is 0.08～0.12 millimeter.
Less than the isolation layer size, 3～5 mm clearance are respectively left in copper sheet layer two ends and bearing shell side along the bearing shell axial dimension for the above-mentioned wear-resisting type bearing shell that is used for large-size machine, described copper sheet.
Fixedly connected by Bond between the above-mentioned wear-resisting type bearing shell that is used for large-size machine, described copper sheet layer and isolation layer.
The utility model improves the bearing shell of large-size machine sliding bearing, one: insulation layer structure rationally is set; Its two: on isolation layer, set up anti-wear protective layer.Above-mentioned improvement can effectively improve wear-resistance of bearing pad, reduces device maintenance expense and repair time, and direct economic benefit and indirect economic effect are all very considerable.Improve the working life of back bearing shell and can improve 6～7 times.The utility model realization simple in structure, easy is particularly used it in the transformation of existing equipment, drops into seldom, produces effects obviously, has very much promotional value, can be widely used on the bearing shell of large-size machine.
Description of drawings
Fig. 1 improves front axle tile structure schematic representation;
Fig. 2 is the utility model structural representation.
Number in the figure is expressed as follows: 1. bearing shell; 2. isolation layer; 3. copper sheet layer; 4. bearing shell supporting base; 5. insulation board; 6. gap.
Embodiment
Referring to Fig. 2, the utility model bearing shell supporting base 4 is supported on the recess at bearing shell 1 back, is provided with isolation layer 2 and insulation board 5 between bearing shell supporting base and the bearing shell, and it mainly improves and is embodied in two aspects, and the one, bearing shell back isolation layer 2 is arranged to smooth surface.If for the transformation of existing equipment, its method is that employing Bond adhesive glass fibre insulation board is a smooth surface with original isolation layer polishing.The 2nd, in order to increase wear resistance, the bond copper cortex 3 again on the surface of isolation layer, the copper sheet layer thickness is advisable for 0.08～0.12 millimeter.Consider the insulating properties requirement of bearing shell, axial along bearing shell, the copper sheet size is less than the isolation layer size, makes that every side leaves gap 6 between the side of copper sheet layer and bearing shell, and gap value is 3～5 millimeters.In addition, cause wearing and tearing, the tight power of watt back of the body suitably can be improved for preventing bearing shell generation fine rotation.
Claims (4)
1. wear-resisting type bearing shell that is used for large-size machine, the bearing shell back is provided with isolation layer, it is characterized in that: described isolation layer (2) outer surface is smooth semi-cylindrical, is provided with anti-wear protective layer on the isolation layer outer surface.
2. the wear-resisting type bearing shell that is used for large-size machine according to claim 1 is characterized in that: described anti-wear protective layer is copper sheet layer (3), 0.08～0.12 millimeter of copper sheet thickness.
3. the wear-resisting type bearing shell that is used for large-size machine according to claim 2 is characterized in that: less than the isolation layer size, 3～5 mm clearance (6) are respectively left in copper sheet layer two ends and bearing shell side to described copper sheet layer (3) along the bearing shell axial dimension.
4. according to claim 2 or the 3 described wear-resisting type bearing shells that are used for large-size machine, it is characterized in that: fixedly connected by Bond between described copper sheet layer (3) and the isolation layer (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420029730 CN2727484Y (en) | 2004-09-11 | 2004-09-11 | Abrasion resistant bearing bush for large-scale electric machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420029730 CN2727484Y (en) | 2004-09-11 | 2004-09-11 | Abrasion resistant bearing bush for large-scale electric machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2727484Y true CN2727484Y (en) | 2005-09-21 |
Family
ID=35043499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420029730 Expired - Fee Related CN2727484Y (en) | 2004-09-11 | 2004-09-11 | Abrasion resistant bearing bush for large-scale electric machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2727484Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101704174B (en) * | 2009-11-13 | 2011-08-31 | 天津电力建设公司 | Light scraping method of main bearing black golden tile of ball mill |
-
2004
- 2004-09-11 CN CN 200420029730 patent/CN2727484Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101704174B (en) * | 2009-11-13 | 2011-08-31 | 天津电力建设公司 | Light scraping method of main bearing black golden tile of ball mill |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |