CN201621282U - Self-pressing type oil seal of oil extractor reduction gearbox shaft - Google Patents
Self-pressing type oil seal of oil extractor reduction gearbox shaft Download PDFInfo
- Publication number
- CN201621282U CN201621282U CN201020141436XU CN201020141436U CN201621282U CN 201621282 U CN201621282 U CN 201621282U CN 201020141436X U CN201020141436X U CN 201020141436XU CN 201020141436 U CN201020141436 U CN 201020141436U CN 201621282 U CN201621282 U CN 201621282U
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- oil
- main body
- reduction gearbox
- oil sealing
- oil seal
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- Expired - Fee Related
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Abstract
The utility model relates to a self-pressing type oil seal of an oil extractor reduction gearbox shaft, which mainly solves the problems of short service life and bad sealing effect of the sealing oil seal of the existing oil extractor reduction gearbox shaft, and is characterized in that the inner ring of an annular oil seal main body (1) is provided with an annular main sealing lip (5) and an annular auxiliary sealing lip (4), one side of the oil seal main body (1) is provided with a trapezoid groove (2), and the trapezoid groove is internally provided with a trapezoid pressing ring (3) meshed with the trapezoid groove in shape. The oil seal has long service life and good sealing effect, and can prolong the operation cycle of the reduction gearbox.
Description
Technical field:
The utility model relates to the seal oil part that oil pumping unit reduction gearbox is exported, input shaft is used, a kind of specifically oil pumping unit reduction gearbox axle self-pressure type oil sealing.
Background technique:
Oil sealing commonly used mainly contains lips sponge rubber oil sealing and inner spring list lip rubber oil sea on speed reducer output, the input shaft, because speed reducer works without cessation for a long time, along with the uninterrupted rotation of output, input shaft, after the wearing and tearing of the lips of lips sponge rubber oil sealing, just lose sealing function; After single lip wearing and tearing of inner spring list lip rubber oil sea, contained spring just loses the self-tightening effect, in case spring fracture, oil leakage phenomenon more can't be inevitable, has a strong impact on the working life of speed reducer, promptly wastes lubricant oil befouling environment again; And because of the volume of oil pumping unit reduction gearbox is bigger, the oil sealing difficulty on the dismounting and change axle, thus influence ordinary production.
The model utility content:
In order to overcome the problem that existing oil sealing is fragile, the life-span is short, the utility model provides a kind of oil pumping unit reduction gearbox axle self-pressure type oil sealing.This oil sealing long service life, good sealing effect can prolong the service cycle of speed reducer.
The technical solution of the utility model is: a kind of oil pumping unit reduction gearbox axle self-pressure type oil sealing, comprise the oil sealing main body, described annular oil seal main body inner ring has the primary seal lip and the auxilliary sealing lip of annular, one side of oil sealing main body has dovetail groove, dovetail groove is built-in with the small end of the trapezoidal pressure ring that coincide with its shape, and is gapped between the small end end face of the bottom land of dovetail groove and pressure ring.
Described oil sealing main body all adopts the polyurethane high molecule material; Pressure ring adopts polyurethane high molecule material or high elastic rubber to make.
The beneficial effects of the utility model are: because this oil sealing adopts the trapezoidal small end that is built-in with the pressure ring that coincide with its shape at the dovetail groove of oil sealing main body, between the trapezoidal small end of pressure ring and bottom land certain space is arranged, utilize the inclined-plane on the trapezium structure, when being assembled to when spool last, be subjected to the axial compression power effect of bearing (ball) cover and bearing face, trapezoidal pressure ring squeezes in the dovetail groove of oil sealing main body automatically, the surface pressure that makes the inside swelling in lip limit of primary seal lip and be close to axle discharges gradually and forms closely the endless belt sealing, thereby improves the sealing of oil sealing; Because of oil sealing main body and pressure ring all adopt the polyurethane high molecule material, characteristics with oil resistant, heat-resisting, corrosion-resistant, wear-resisting, good springiness, this oil sealing and existing oil sealing are relatively, working life extended period greatly, thereby reduce the service cycle of speed reducer, save maintenance cost, increase work efficiency.
Description of drawings:
Accompanying drawing 1 is a structural representation of the present utility model;
1-oil sealing main body among the figure, the 2-dovetail groove, the 3-pressure ring, 4-assists sealing lip, the 5-primary seal lip.
Embodiment:
Below in conjunction with accompanying drawing the utility model is described further:
Shown in accompanying drawing 1, this oil pumping unit reduction gearbox axle self-pressure type oil sealing mainly is made up of oil sealing main body 1 and pressure ring 3, wherein the inner ring of annular oil seal main body 1 has annular primary seal lip 5 and auxilliary sealing lip 4, one side shaft of oil sealing main body 1 has dovetail groove 2 on end face, dovetail groove 2 is built-in with the small end of shape and its pressure ring 3 that coincide, between the trapezoidal small end of the bottom land of dovetail groove 2 and pressure ring 2 certain space is arranged, when being assembled to when spool last, be subjected to the axial compression power effect of bearing (ball) cover and outer race end face, pressure ring 3 pushes in the dovetail groove 2 of trend oil sealing main body 1, because pressure ring 2 adopts polyurethane high molecule material or elastomeric to make, after being squeezed, pressure discharges the surface of inwardly expanding and be close to axle in the lip limit that makes primary seal lip 5 gradually, forms endless belt sealing closely, thereby improves the sealing of oil sealing; And oil sealing main body 1 adopts the polyurethane high molecule material, has the characteristics of oil resistant, heat-resisting, corrosion-resistant, wear-resisting, good springiness, can prolong the working life of this oil sealing, reduces the replacement cycle, saves maintenance cost.When changing oil sealing, need not lift speed reducer, the oil sealing main body 1 and pressure ring 3 random positions of this oil sealing can be cut to one 45 ° of otch, and the otch of oil sealing main body 1 and pressure ring 3 is staggered, make simultaneously two 45 ° of otch upwards and with the rotation direction of axle forward, pressure ring 3 is towards the outer race end face, the other end of oil sealing main body 1 is towards bearing (ball) cover, its otch is opened, just can be assembled in the sealing of axle in the groove, when screwing bearing (ball) cover, be subjected to the axial compression power effect of end cap and bearing face, trapezoidal pressure ring 3 pushes in the dovetail groove 2 of trend oil sealing main body 1, makes the inside surface of expanding and being close to axle, lip limit of primary seal lip 5, forms endless belt contact closely, play seal action, wearing and tearing backs makes pressure ring 3 further compress into dovetail groove 2 by screwing end cap, and the surface that makes the lip limit of primary seal lip 5 more be adjacent to axle makes its sealing, thereby prolong working life phase of oil sealing greatly, thereby reduce the service cycle of speed reducer, save maintenance cost, increase work efficiency.
Claims (2)
1. oil pumping unit reduction gearbox axle self-pressure type oil sealing, comprise oil sealing main body (1), it is characterized in that: the inner ring of annular oil seal main body (1) has the primary seal lip (5) and the auxilliary sealing lip (4) of annular, one side of oil sealing main body (1) has dovetail groove (2), dovetail groove (2) is built-in with the small end of the trapezoidal pressure ring (3) that coincide with its shape, and is gapped between the small end end face of the bottom land of dovetail groove (2) and pressure ring (3).
2. oil pumping unit reduction gearbox axle self-pressure type oil sealing according to claim 1 is characterized in that: main body (1) adopts the polyurethane high molecule material, and pressure ring (3) adopts polyurethane high molecule material or high-elastic rubber to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020141436XU CN201621282U (en) | 2010-03-26 | 2010-03-26 | Self-pressing type oil seal of oil extractor reduction gearbox shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020141436XU CN201621282U (en) | 2010-03-26 | 2010-03-26 | Self-pressing type oil seal of oil extractor reduction gearbox shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201621282U true CN201621282U (en) | 2010-11-03 |
Family
ID=43024737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020141436XU Expired - Fee Related CN201621282U (en) | 2010-03-26 | 2010-03-26 | Self-pressing type oil seal of oil extractor reduction gearbox shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201621282U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102954215A (en) * | 2012-11-12 | 2013-03-06 | 李畅 | Compensation type sealing ring |
| CN104477157A (en) * | 2014-12-20 | 2015-04-01 | 芜湖盛力科技股份有限公司 | Air-assisted hydraulic air booster pump for magnetically levitated train |
-
2010
- 2010-03-26 CN CN201020141436XU patent/CN201621282U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102954215A (en) * | 2012-11-12 | 2013-03-06 | 李畅 | Compensation type sealing ring |
| CN104477157A (en) * | 2014-12-20 | 2015-04-01 | 芜湖盛力科技股份有限公司 | Air-assisted hydraulic air booster pump for magnetically levitated train |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101103 Termination date: 20150326 |
|
| EXPY | Termination of patent right or utility model |