CN221120676U - Sealing device and bearing assembly - Google Patents
Sealing device and bearing assembly Download PDFInfo
- Publication number
- CN221120676U CN221120676U CN202322496002.1U CN202322496002U CN221120676U CN 221120676 U CN221120676 U CN 221120676U CN 202322496002 U CN202322496002 U CN 202322496002U CN 221120676 U CN221120676 U CN 221120676U
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- annular
- sealing
- sealing device
- bearing
- pressing part
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- 238000007789 sealing Methods 0.000 title claims abstract description 80
- 230000007704 transition Effects 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 239000003921 oil Substances 0.000 description 10
- 239000003638 chemical reducing agent Substances 0.000 description 6
- 230000005489 elastic deformation Effects 0.000 description 5
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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- Sealing Of Bearings (AREA)
Abstract
The utility model discloses a sealing device and a bearing assembly, wherein the sealing device comprises an annular sealing part and an annular pressing part which are arranged in a connecting way, and the annular pressing part is arranged on the outer ring of the annular sealing part and can elastically deform along the radial direction; in a natural state, the annular pressing part is obliquely arranged outwards in a radial direction relative to the annular sealing part, and in an operating state, the annular pressing part bears the pressure of the radial pressing force to elastically deform so as to keep outward expansion. According to the axial sealing device, the axial sealing is realized through the annular sealing part, the fixed mounting in the axial gap needing sealing is realized through the annular pressing part, meanwhile, the radial sealing at the outer side of the shaft system can be realized, the traditional oil seal structure is replaced, a cover plate structure is not required to be additionally arranged, the number of parts is reduced, and the manufacturing cost is reduced while the mounting is simplified.
Description
Technical Field
The utility model relates to the technical field of speed reducer sealing, in particular to a sealing device and a bearing assembly.
Background
An oil seal, also known as a shaft seal, is a component of a device used in a machine to prevent fluid (mostly lubricating oil) from escaping from the joint (mostly the joint surface or shaft of the component). The representative form of oil blanket is TC oil blanket, this is the double-lip oil blanket of taking self-tightening spring that rubber cladding completely, is widely used in various speed reducers, the tradition oil blanket of this kind of structure itself has certain thickness, simultaneously in order to install the demand, need extra cooperation apron structure to use, not only increase the quantity and the cost of spare part, make whole axial dimensions increase simultaneously, and in the speed reducer structure, adopt traditional oil blanket structure, can make the epaxial bearing of input keep away from the stressing axle, the arm of force increases, the bearing atress is bigger, reduce short bearing life by a wide margin.
Disclosure of utility model
The utility model aims to overcome the defects of the prior art and provide a sealing device and a bearing assembly, which do not need to use a cover plate structure, reduce the number of parts, simplify installation, reduce manufacturing cost, simultaneously have a more compact product structure, reduce the stress of the bearing and prolong the service life of the bearing.
The technical scheme for realizing the purpose of the utility model is as follows:
The sealing device comprises an annular sealing part and an annular pressing part which are arranged in a connecting manner, wherein the annular pressing part is arranged on the outer ring of the annular sealing part and can elastically deform along the radial direction; in a natural state, the annular pressing part is obliquely arranged outwards in a radial direction relative to the annular sealing part, and in an operating state, the annular pressing part bears the pressure of the radial pressing force to elastically deform so as to keep outward expansion.
Further, the annular sealing part and the annular pressing part are integrally formed by adopting SPCC.
Further, the circular arc transition between annular sealing portion and annular compressing portion.
Further, an extending part which is obliquely arranged inwards along the radial direction is arranged on one side of the annular pressing part away from the annular sealing part.
Further, the annular sealing part comprises a first annular part, a second annular part and a third annular part which are sequentially connected outwards along the axis, the first annular part and the third annular part are axially arranged in parallel, and the axial distance between the first annular part and the extending part is greater than the axial distance between the third annular part and the extending part.
Further, the inclination angle α of the second annular portion is 28 to 32 °.
Further, an axial distance between the first annular portion and the third annular portion is D, and a radial distance between the first annular portion and the third annular portion is H, where h=2d.
Further, the inclination angle of the annular sealing part is 1-3 degrees.
The bearing assembly comprises a bearing and the sealing device arranged outside the bearing, wherein the inner ring and the outer ring of the bearing are arranged in a staggered mode along the axial direction, a notch is formed on one side close to the sealing device, the outer side of the inner ring of the bearing is attached to the annular sealing part, and the annular pressing part is flush with the outer ring of the bearing.
By adopting the technical scheme, the utility model has the following beneficial effects:
(1) According to the axial sealing device, the axial sealing is realized through the annular sealing part, the fixed mounting in the axial gap needing sealing is realized through the annular pressing part, meanwhile, the radial sealing at the outer side of the shaft system can be realized, the traditional oil seal structure is replaced, a cover plate structure is not required to be additionally arranged, the number of parts is reduced, and the manufacturing cost is reduced while the mounting is simplified.
(2) The annular sealing part and the annular pressing part are integrally formed by SPCC, have smooth surfaces and proper rigidity and elastic deformation capability, are convenient for processing and production, and further reduce the manufacturing cost.
(3) The circular arc transition between the annular sealing part and the annular pressing part ensures that the annular pressing part has better elastic deformation force.
(4) The annular pressing part is provided with the extension part, so that the sealing device is more convenient to install in the axial gap.
(5) The annular sealing part forms a bent hook shape through the first annular part, the second annular part and the third annular part, has better elastic support, and improves the elastic compression force of the annular compression part after installation.
(6) The bearing assembly provided by the utility model adopts the inner ring and the outer ring which are arranged in a staggered way, so that an installation space is provided for the annular pressing part, the whole product structure is more compact, the bearing stress is reduced, and the service life of the bearing is prolonged.
Drawings
In order that the utility model may be more readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments that are illustrated in the appended drawings, in which:
FIG. 1 is a schematic structural diagram of comparative example 1;
FIG. 2 is a schematic view of a bearing assembly according to the present utility model;
fig. 3 is a schematic structural view of the sealing device of the present utility model.
The reference numerals in the drawings are:
The sealing device 1, the annular sealing part 1-1, the first annular part 1-1-1, the second annular part 1-1-2, the third annular part 1-1-3, the annular pressing part 1-2, the extending part 1-2-1 and the bearing 2.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the embodiments of the present utility model, it should be understood that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like indicate orientations or positional relationships based on those shown in the drawings, or those conventionally put in place when the inventive product is used, or those conventionally understood by those skilled in the art, merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
In the description of the embodiments of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Comparative example 1
The bearing assembly shown in fig. 1 comprises a sealing device 1 and a bearing 2, wherein the bearing 2 is arranged between an input shaft and a bearing seat of a speed reducer, an end cover is fixedly arranged on the left side of the bearing seat through bolts, the sealing device 1 is embedded in the end cover, and a traditional TC framework oil seal is adopted, so that sealing is realized. Because the end cover and the TC framework oil seal are arranged in the structural bearing assembly, the structural bearing assembly has a certain thickness, so that the number of parts is large, the whole structure is lengthened, and the manufacturing cost of the product is increased; meanwhile, the longer product structure can lengthen the bearing stress arm of force, the stress becomes large, reduce the life time of the bearing.
Example 1
The bearing assembly shown in fig. 2 and 3 comprises a sealing device 1 and a bearing 2, wherein the bearing 2 is arranged between an input shaft and a shell of a speed reducer, an inner ring and an outer ring of the bearing 2 are arranged in an axial dislocation mode, a notch 2-1 is formed on the left side, the sealing device 1 is also arranged between the input shaft and the shell of the speed reducer and is positioned on the left side of the bearing 2, the bearing assembly comprises an annular sealing part 1-1 and an annular pressing part 1-2 which are arranged in a connecting mode, and the annular pressing part 1-2 is arranged on the outer ring of the annular sealing part 1-1 and can elastically deform along the radial direction. Under the natural state, the annular pressing part 1-2 is obliquely arranged outwards along the radial direction relative to the annular sealing part 1-1, and under the working state, the annular pressing part 1-2 bears the pressure of elastic deformation of radial pressing force to keep outward expansion, so that the sealing device 1 is fixedly arranged between a shell and an input shaft, wherein the left side of an inner ring of a bearing is attached to the annular sealing part 1-1, the annular pressing part 1-2 is flush with the outer ring of the bearing 2, and the annular sealing part 1-1 and the annular pressing part 1-2 are in a lamellar shape, so that the inner ring of the sealing device 1 is in line contact with the input shaft, the normal rotation of the input shaft is not influenced, and the rotary sealing is realized.
Specifically, the annular sealing part 1-1 and the annular pressing part 1-2 are integrally formed by adopting SPCC, so that the surface is smooth, the annular sealing part has proper rigidity and elastic deformation capability, the processing and the production are convenient, and the manufacturing cost is further reduced. Wherein the right side of the annular pressing part 1-2 is provided with an extending part 1-2-1 which is obliquely arranged inwards along the radial direction, thereby being more convenient for the sealing device 1 to be installed in the axial gap. The annular sealing part 1-1 comprises a first annular part 1-1-1, a second annular part 1-1-2 and a third annular part 1-1-3 which are sequentially connected left along the axis, the first annular part 1-1-1 and the third annular part 1-1-3 are axially arranged in parallel, the axial distance between the first annular part 1-1 and the extension part 1-2-1 is greater than the axial distance between the third annular part 1-1-3 and the extension part 1-2-1, so that a hook shape with an opening right is formed, better elastic support is achieved, and the elastic compression force of the annular compression part 1-2 after installation is improved. In order to ensure that the elastic pressing force is moderate, and that the elastic pressing force is not excessively small to cause falling or excessive to cause interference with rotation of the transmission shaft, in a natural state, the inclination angle of the annular pressing portion 1-2 is 1 to 3 °, preferably 1.5 ° in this embodiment, the inclination angle α of the second annular portion is 28 to 32 °, preferably 30 ° in this embodiment, and the axial distance between the first annular portion 1-1 and the third annular portion 1-1-3 is D, and the radial distance between the first annular portion 1-1-1 and the third annular portion 1-1-3 is H, where h=2d. The third annular part 1-1-3 and the annular pressing part 1-2 are in arc transition, so that the annular pressing part 1-2 has better elastic deformation force.
According to the axial sealing device, axial sealing is achieved through the annular sealing part 1-1, fixed mounting in an axial gap needing sealing is achieved through the annular pressing part 1-2, meanwhile radial sealing at the outer side of a shaft system can be achieved, a traditional oil seal structure is replaced, a cover plate structure is not required to be additionally arranged, the number of parts is reduced, and manufacturing cost is reduced while mounting is simplified.
While the foregoing is directed to embodiments of the present utility model, other and further details of the utility model may be had by the present utility model, it should be understood that the foregoing description is merely illustrative of the present utility model and that no limitations are intended to the scope of the utility model, except insofar as modifications, equivalents, improvements or modifications are within the spirit and principles of the utility model.
Claims (7)
1. A sealing device, characterized in that: the device comprises an annular sealing part (1-1) and an annular pressing part (1-2) which are connected, wherein the annular pressing part (1-2) is arranged on the outer ring of the annular sealing part (1-1) and can elastically deform along the radial direction; an extending part (1-2-1) which is obliquely arranged inwards along the radial direction is arranged on one side, far away from the annular sealing part (1-1), of the annular pressing part (1-2), the annular sealing part (1-1) comprises a first annular part (1-1-1), a second annular part (1-1-2) and a third annular part (1-1-3) which are sequentially connected outwards along the axis, the first annular part (1-1-1) and the third annular part (1-1-3) are arranged in parallel along the axial direction, and the axial distance between the first annular part (1-1-1) and the extending part (1-2-1) is larger than the axial distance between the third annular part (1-1-3) and the extending part (1-2-1); in a natural state, the annular pressing part (1-2) is obliquely arranged outwards along the radial direction relative to the annular sealing part (1-1), and in an operating state, the annular pressing part (1-2) bears the radial pressing force to elastically deform so as to keep the outward expansion pressure.
2. A sealing device according to claim 1, wherein: the annular sealing part (1-1) and the annular pressing part (1-2) are integrally formed by adopting SPCC.
3. A sealing device according to claim 1, wherein: the circular arc transition is formed between the annular sealing part (1-1) and the annular pressing part (1-2).
4. A sealing device according to claim 1, wherein: the inclination angle alpha of the second annular part (1-1-2) is 28-32 degrees.
5. A sealing device according to claim 1, wherein: the axial distance between the first annular part (1-1-1) and the third annular part (1-1-3) is D, and the radial distance between the first annular part (1-1-1) and the third annular part (1-1-3) is H, wherein h=2d.
6. A sealing device according to claim 1, wherein: the inclination angle of the annular sealing part (1-1) is 1-3 degrees.
7. A bearing assembly, characterized in that: the sealing device comprises a bearing (2) and the sealing device (1) as claimed in any one of claims 1 to 6, wherein the sealing device is arranged outside the bearing, an inner ring and an outer ring of the bearing (2) are arranged in a staggered mode along the axial direction, a notch (2-1) is formed on one side close to the sealing device (1), the outer side of the inner ring of the bearing (2) is attached to an annular sealing part (1-1), and the annular pressing part (1-2) is flush with the outer ring of the bearing (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322496002.1U CN221120676U (en) | 2023-09-14 | 2023-09-14 | Sealing device and bearing assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322496002.1U CN221120676U (en) | 2023-09-14 | 2023-09-14 | Sealing device and bearing assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221120676U true CN221120676U (en) | 2024-06-11 |
Family
ID=91345049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322496002.1U Active CN221120676U (en) | 2023-09-14 | 2023-09-14 | Sealing device and bearing assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221120676U (en) |
-
2023
- 2023-09-14 CN CN202322496002.1U patent/CN221120676U/en active Active
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| GR01 | Patent grant |