CN207527038U - A kind of oil sealing bush structure - Google Patents
A kind of oil sealing bush structure Download PDFInfo
- Publication number
- CN207527038U CN207527038U CN201721619802.6U CN201721619802U CN207527038U CN 207527038 U CN207527038 U CN 207527038U CN 201721619802 U CN201721619802 U CN 201721619802U CN 207527038 U CN207527038 U CN 207527038U
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- oil sealing
- axis
- free end
- oil
- bushing
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Abstract
The utility model discloses a kind of oil sealing bush structures, including casing and axis, casing is equipped with axis hole, the free end of axis is extend out to outside axis hole, tight fit is socketed with bearing between axis hole madial wall and axis, and the outside of bearing is equipped with outside framework oil seal, the lateral wall of outside framework oil seal is close to axis hole madial wall, the oil sealing bushing for being socketed with annular of tight fit, the fixing end of oil sealing bushing are close to the free end of bearing on axis；Outside framework oil seal is connected on the lateral wall of oil sealing bushing, and length of the oil sealing bushing in free end is longer than outside framework oil seal.The beneficial effects of the utility model are：Oil seal lip can be protected not scratched by keyway etc. in assembling process, oil sealing is facilitated to install, had and dismantle simple, replaceable advantage.
Description
Technical field
The utility model belongs to machinery field, specifically a kind of oil sealing bush structure.
Background technology
In typical power axis connection, oil sealing usually is designed on the outside of the bearing of axis, for stopping internal bearings
Outflow of lubrication oil, while stop external dust intrusion bearing.The input shaft or output shaft of some equipment are typically by bonded
It connects and coordinates with Client Work machine, therefore be less than oil sealing gear shaft diameter and bearing gear shaft on axis with the diameter of axle of client's coupling part
Diameter can just prevent oil seal lip in assembling process from being scratched by keyway.But in some special application scenarios, client's coupling part
The diameter of axle it is equal or close with the bearing rib diameter of axle when, the diameter of axle, bearing gear shaft that oil sealing gear shaft diameter also can only be with client's coupling part
Diameter is equal or close, and oil seal lip is often scratched by keyway in assembling process, causes equipment sealing effect poor.Chinese patent text
CN102434247A is offered, has been spaced apart " a kind of engine rear power take-off device lubrication system ", technical solution on May 2nd, 2012
For：A kind of engine rear power take-off device lubrication system, including the oil duct being arranged on engine cylinder block, the oil duct passes through sky
Heart resilient key is connected with the bell housing oil duct one end being arranged on bell housing, the other end of the bell housing oil duct and rear power taking shell
Small oilhole connection on body, the small oilhole lead to the bearing of rear power taking housing cavity, and the rear power taking housing cavity is with starting
Machine rear end gear chamber connects, and rear power taking oil sealing and rear power taking oil are provided in the rear power taking flange being connect with the rear power taking housing
Seal bushing.Traditional oil sealing bush structure representated by the technical solution, there is the above problem.
Invention content
Based on drawbacks described above, the utility model discloses a kind of oil sealing bush structures, and oil can be protected in assembling process
Envelope lip is not scratched by keyway etc., and oil sealing is facilitated to install, and is had and is dismantled simple, replaceable advantage.
In order to realize goal of the invention, the utility model adopts the following technical solution：A kind of oil sealing bush structure, including casing
And axis, casing are equipped with axis hole, the free end of axis is extend out to outside axis hole, and tight fit is socketed with axis between axis hole madial wall and axis
It holds, the outside of bearing is equipped with outside framework oil seal, and the lateral wall of outside framework oil seal is close to axis hole madial wall, and tight fit is socketed with ring on axis
The oil sealing bushing of shape, the fixing end of oil sealing bushing are close to the free end of bearing；Outside framework oil seal is connected to the lateral wall of oil sealing bushing
On, length of the oil sealing bushing in free end is longer than outside framework oil seal.
For ease of narration, as without particularly pointing out, the fixing end hereinafter referred to and free end, the direction referred to is axis
Fixation extreme direction and free extreme direction.
The oil sealing bush structure of this programme design, if there are one casing, for setting of passing through of axis, there are one axis hole, axis on casing
Bearing is socketed in fixing end side between the madial wall in hole and the lateral wall of axis, outside framework oil seal is socketed in free end side.
Wherein, in the corresponding position of outside framework oil seal, the circumferential tight fit either interference fit of axis is socketed with oil sealing bushing, makes skeleton
The medial surface of oil sealing is tightly attached to the lateral surface of oil sealing bushing.In order to play the role of protecting outside framework oil seal, the oil of this programme design
The fixing end of envelope bushing is close to the free end of bearing, and the free end of oil sealing bushing is longer than the free end of outside framework oil seal, makes outer spindle
Key be only capable of the free end for being close to that outside framework oil seal can not be touched to the free end of oil sealing bushing, so as to ensure that outside framework oil seal
Service life and using effect.
Preferably, length of the oil sealing bushing in free end is not shorter than the length of the oil sealing gear of axis.Further, it can incite somebody to action
The length that Design of length of the oil sealing bushing in free end is kept off not to be shorter than the oil sealing of axis.Oil sealing bushing is made objectively to become one in this way
A locating part, pair plays position-limiting action with the connecting element of axis connection, and ensureing the oil sealing gear of axis will not be worn, and ensure axis
Precision.
Preferably, oil sealing bushing is equipped with several threaded holes on the end face of free end.Need dismantle oil sealing bushing into
When row maintaining and update are replaced, bolt can be screwed into threaded hole, then the tools such as horse to be drawn to clamp bolt, you can will be oily
Envelope bushing is easily removed.
Preferably, the outside of the free end of oil sealing bushing is equipped with circular arc chamfering.Oil seal lip can be protected in this way.
Preferably, 58 ~ 62HRC of case hardness of oil sealing bushing.Oil sealing bushing needs replacement bearing frayed, therefore needs
Enough hardness is wanted, oil sealing bushing is also expendable part, therefore under the premise of needs are met, and may be controlled to this, selects hardness
Relatively low material.
Preferably, the roughness of oil sealing bushing is 0.23-0.43 microns of Ra.Roughness is relatively low, in outside framework oil seal
The abrasion of side wall is smaller, can extend the service life of outside framework oil seal.
In conclusion the beneficial effects of the utility model are：It can protect oil seal lip not by keyway in assembling process
Etc. scratching, oil sealing is facilitated to install, have and dismantle simple, replaceable advantage.
Description of the drawings
Fig. 1 is the axial sectional view of the utility model.
Fig. 2 is the A portions enlarged drawing in Fig. 1.
Wherein：1 rebasing circle, 2 interior limiting side walls, 3 limit side wall, 4 limit protrusions outside.
Specific embodiment
The utility model is further described with specific embodiment below in conjunction with the accompanying drawings.
Embodiment as shown in Figure 1 and Figure 2 is a kind of oil sealing bush structure.The oil sealing bush structure includes casing 1 and axis
2, casing is equipped with axis hole, and the right end of axis is fixing end, and in casing, the left end of axis is free end, is extend out to outside axis hole, axis
Tight fit is socketed with bearing 3 between hole madial wall and axis, and the outside of bearing is equipped with outside framework oil seal 4, the lateral wall of outside framework oil seal
It is close to axis hole madial wall, it is characterized in that, the oil sealing bushing 5 for being socketed with annular of tight fit, the fixing end of oil sealing bushing are tight on axis
The free end that post-axis is held；Outside framework oil seal is connected on the lateral wall of oil sealing bushing, and length of the oil sealing bushing in free end is longer than bone
Frame oil sealing.In this example, length of the oil sealing bushing in free end is selected to be equal to the length that the oil sealing of axis is kept off, the member that can be connected by shaft
Part plays the role of axial limiting.Oil sealing bushing is equipped with several threaded holes 6 on the end face of free end, is needing to dismantle oil sealing bushing
When carrying out maintaining and update replacement, bolt can be screwed into threaded hole, then the tools such as horse to be drawn to clamp bolt, you can will
Oil sealing bushing is easily removed.The outside of the free end of oil sealing bushing is equipped with circular arc chamfering, can protect the lip of outside framework oil seal.
Oil sealing bushing uses 20CrMnTi carburizing and quenchings, and 58 ~ 62HRC of case hardness reaches 0.23- with the outer circle of oil seal lip cooperation
The roughness of 0.43 micron of Ra, and according to the run-out tolerance of outside diameter control oil sealing bushing.The endoporus of oil sealing bushing is adopted with axis
With interference fit to achieve the effect that sealing, and the endoporus of corresponding oil sealing bushing can be processed according to practical diameter of axle size
Size reaches best fit effect.
Claims (6)
1. a kind of oil sealing bush structure, including casing（1）And axis（2）, for casing equipped with axis hole, the free end of axis extend out to axis hole
Outside, tight fit is socketed with bearing between axis hole madial wall and axis（3）, the outside of bearing is equipped with outside framework oil seal（4）, outside framework oil seal
Lateral wall be close to axis hole madial wall, it is characterized in that, on axis tight fit is socketed with annular oil sealing bushing（5）, oil sealing bushing
Fixing end be close to the free end of bearing；Outside framework oil seal is connected on the lateral wall of oil sealing bushing, and oil sealing bushing is in free end
Length is longer than outside framework oil seal.
2. a kind of oil sealing bush structure according to claim 1, it is characterized in that, length of the oil sealing bushing in free end is not short
In the length that the oil sealing of axis is kept off.
3. a kind of oil sealing bush structure according to claim 1 or 2, it is characterized in that, oil sealing bushing is in the end face of free end
It is equipped with several threaded holes（6）.
4. a kind of oil sealing bush structure according to claim 1 or 2, it is characterized in that, the outside of the free end of oil sealing bushing
Equipped with circular arc chamfering.
5. a kind of oil sealing bush structure according to claim 1 or 2, it is characterized in that, the case hardness 58 of oil sealing bushing ~
62HRC。
6. a kind of oil sealing bush structure according to claim 1 or 2, it is characterized in that, the roughness of oil sealing bushing is 0.23-
0.43 micron of Ra.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721619802.6U CN207527038U (en) | 2017-11-28 | 2017-11-28 | A kind of oil sealing bush structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721619802.6U CN207527038U (en) | 2017-11-28 | 2017-11-28 | A kind of oil sealing bush structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207527038U true CN207527038U (en) | 2018-06-22 |
Family
ID=62579454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721619802.6U Active CN207527038U (en) | 2017-11-28 | 2017-11-28 | A kind of oil sealing bush structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207527038U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115094203A (en) * | 2022-06-24 | 2022-09-23 | 浙江中诚滑动轴承科技有限公司 | Preparation method of multiple composite treatment self-lubricating steel bushing and bushing |
-
2017
- 2017-11-28 CN CN201721619802.6U patent/CN207527038U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115094203A (en) * | 2022-06-24 | 2022-09-23 | 浙江中诚滑动轴承科技有限公司 | Preparation method of multiple composite treatment self-lubricating steel bushing and bushing |
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