CN210290675U - Driving bevel gear assembly sealing structure - Google Patents
Driving bevel gear assembly sealing structure Download PDFInfo
- Publication number
- CN210290675U CN210290675U CN201920949807.8U CN201920949807U CN210290675U CN 210290675 U CN210290675 U CN 210290675U CN 201920949807 U CN201920949807 U CN 201920949807U CN 210290675 U CN210290675 U CN 210290675U
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- flange
- bevel gear
- shaft diameter
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- ring
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- Sealing Of Bearings (AREA)
Abstract
The utility model discloses a sealing structure of a drive bevel gear assembly, wherein the shaft diameter of a bearing outer ring is arranged in a central round hole of a bearing seat, the shaft diameter of a drive bevel gear is arranged in a central hole of a bearing inner ring, and the end surface of the bearing inner ring is attached with an adjusting gasket; the shaft diameter of the oil seal is pressed into an oil seal mounting hole of the bearing seat, and a sealing lip of the oil seal is matched with the shaft diameter of the inner ring of the bearing; the shaft diameter of the flange is provided with a dust shield; the first O-shaped ring is arranged between the flange and the bearing inner ring; the flange is connected with the shaft diameter key of the driving bevel gear, and the lower end surface of the dust hood is matched with the dustproof lip of the oil seal; the second O-shaped ring is arranged between the shaft diameter of the driving bevel gear and the central hole of the flange; the driving bevel gear is locked by a locking nut. The utility model discloses the inner ring of bearing adopts the axle footpath structure of axial extension, as the cooperation axle footpath of oil blanket, and the inner ring adopts the shoulder hole structure, with the flange cooperation, has reduced the radial dimension of oil blanket, and the flange has cancelled the technology of polishing axle footpath, has reduced the radial error of oil blanket cooperation axle footpath.
Description
Technical Field
The utility model belongs to car drive axle field, concretely relates to drive bevel gear assembly seal structure.
Background
In the domestic automobile driving axle, the reducer assembly adopts the outer diameter of the flange as the diameter of the oil seal matched shaft, and the structure needs to polish the outer diameter of the flange, so that the cost of the flange is increased; the size difference between the outer diameter of the oil seal and the inner hole is large, so that the cost of the oil seal is increased, and the sealing performance is reduced; the flange is in spline fit with the driving bevel gear, the radial error of the outer diameter of the flange is large, and the sealing reliability is reduced.
Disclosure of Invention
The utility model aims to solve the problem that in the existing automobile driving axle, the processing cost of the flange is increased because the outer diameter of the flange is adopted as the diameter of the oil seal matching axle; the size difference between the outer diameter of the oil seal and the inner hole is large, so that the cost of the oil seal is increased; the problem that the sealing performance of the oil seal is reduced and the like is caused due to the spline fit error between the driving bevel gear and the flange. The drive bevel gear assembly sealing structure is low in cost and high in sealing reliability.
The utility model discloses an adopt following technical scheme to realize:
a sealing structure of a driving bevel gear assembly comprises a bearing seat, a bearing, an oil seal, a dust shield, a first O-shaped ring, a second O-shaped ring, an adjusting gasket and a flange; the shaft diameter of the outer bearing ring is arranged in a central circular hole of the bearing seat, the shaft diameter of the driving bevel gear is arranged in a central hole of the inner bearing ring, and the end surface of the inner bearing ring is attached to the adjusting gasket; the shaft diameter of the oil seal is pressed into an oil seal mounting hole of the bearing seat, and a sealing lip of the oil seal is matched with the shaft diameter of the inner ring of the bearing; the shaft diameter of the flange is provided with a dust shield; the first O-shaped ring is arranged between the flange and the bearing inner ring; the flange is connected with the shaft diameter key of the driving bevel gear, and the lower end surface of the dust hood is matched with the dustproof lip of the oil seal; the second O-shaped ring is arranged between the shaft diameter of the driving bevel gear and the central hole of the flange; the driving bevel gear is locked by a locking nut.
Furthermore, the bearing inner ring is of a stepped hole structure, a shoulder of the stepped hole is matched with the flange, and a first O-shaped ring is arranged between the stepped hole and the flange.
Further, the flange is in spline connection with the driving bevel gear through a spline hole; the shaft diameter of the flange is arranged in a central hole of the dust shield; the shaft diameter of the flange is provided with an annular groove for mounting a first O-shaped ring; the flange is internally provided with a stepped hole coaxial with the spline hole, a second O-shaped ring is arranged between the stepped hole and the drive bevel gear, and the upper end face of the stepped hole is matched with the flange face of the locking nut through an annular plane structure.
Compared with the prior art, the beneficial effects of the utility model are that:
an inner ring of a tapered roller bearing adopts an axially-extended shaft diameter structure as a matched shaft diameter of an oil seal, and the inner ring adopts a stepped hole structure to be matched with a flange. Through the improvement, the radial size of the oil seal is reduced, so that the cost of the oil seal is reduced; the process of polishing the shaft diameter is omitted from the flange, so that the processing cost of the flange is reduced; the radial error of the oil seal matching with the shaft diameter is reduced, and the sealing reliability is improved.
Drawings
The invention will be further described with reference to the accompanying drawings:
FIG. 1 is a view of a drive bevel gear assembly in an application position of a drive bevel gear assembly sealing structure according to the present invention;
FIG. 2 is a bearing view of a drive bevel gear assembly seal arrangement according to the present invention;
FIG. 3 is a flanged view of a drive bevel gear assembly seal arrangement according to the present invention;
in the figure: 1-bearing seat, 2-bearing, 3-oil seal, 4-dust shield, 5-I O-shaped ring, 6-driving bevel gear, 7-II O-shaped ring, 8-locking nut, 9-gasket and 10-flange.
Detailed Description
The invention is further elucidated with reference to the drawing.
As shown in fig. 1, in a driving bevel gear assembly, which is an application part of a sealing structure of a driving bevel gear assembly, the shaft diameter of an outer ring of a bearing 2 is pressed into a central circular hole of a bearing seat 1 and the end surface is attached, the shaft diameter of a driving bevel gear 6 is arranged in the central hole of an inner ring of the bearing 2, and the end surface of the inner ring of the bearing 2 is attached to an adjusting gasket 9; the shaft diameter of the oil seal 3 is pressed into an oil seal mounting hole of the bearing seat 1, the outer end faces of the oil seal 3 are aligned, and a sealing lip of the oil seal 3 is matched with the shaft diameter of an inner ring of the bearing 2; the central hole of the dust cover 4 is pressed into the shaft diameter of the flange 10 and the end surface is attached; the first O-ring 5 is fitted into the annular groove of the flange 10; the spline hole of the flange 10 is filled with the spline shaft of the driving bevel gear 6, the end surface of the spline hole is attached to the end surface of the inner ring of the bearing 2, the outer diameter of the first O-shaped ring 5 is matched with the stepped hole of the inner ring of the bearing 2, and the lower end surface of the dust hood 4 is matched with the dust lip of the oil seal 3; a second O-ring 7 is installed between the shaft diameter of the drive bevel gear 6 and the center hole of the flange 10; the locking nut 8 is screwed into the thread diameter of the driving bevel gear 6 and is screwed and locked.
As shown in fig. 2, the bearing inner ring is of a stepped hole structure, a shoulder of the stepped hole is matched with the flange 10, and a first O-ring 5 is arranged between the stepped hole and the flange 10; the bearing inner ring is provided with a central hole, and the driving bevel gear 6 is arranged in the central hole of the bearing inner ring; the shaft diameter of the inner ring of the bearing is matched with the sealing lip of the oil seal 3 for sealing; the shaft diameter of the bearing outer ring is arranged in a central circular hole of the bearing seat 1.
As shown in fig. 3, the flange 10 is splined to the drive bevel gear 6 through a splined hole; the shaft diameter of the flange is provided with a dust shield 4, and the shaft diameter is provided with an annular groove for mounting a first O-shaped ring 5; a stepped hole coaxial with the spline hole is formed in the flange 10 and used for mounting a second O-shaped ring 7; the upper end face of the stepped hole is of an annular plane structure and is matched with the flange face of the locking nut 8.
Claims (3)
1. A sealing structure of a driving bevel gear assembly is characterized by comprising a bearing seat, a bearing, an oil seal, a dust hood, a first O-shaped ring, a second O-shaped ring, an adjusting gasket and a flange; the shaft diameter of the outer bearing ring is arranged in a central circular hole of the bearing seat, the shaft diameter of the driving bevel gear is arranged in a central hole of the inner bearing ring, and the end surface of the inner bearing ring is attached to the adjusting gasket; the shaft diameter of the oil seal is pressed into an oil seal mounting hole of the bearing seat, and a sealing lip of the oil seal is matched with the shaft diameter of the inner ring of the bearing; the shaft diameter of the flange is provided with a dust shield; the first O-shaped ring is arranged between the flange and the bearing inner ring; the flange is connected with the shaft diameter key of the driving bevel gear, and the lower end surface of the dust hood is matched with the dustproof lip of the oil seal; the second O-shaped ring is arranged between the shaft diameter of the driving bevel gear and the central hole of the flange; the driving bevel gear is locked by a locking nut.
2. The drive bevel gear assembly seal structure according to claim 1, wherein the bearing inner ring has a stepped bore configuration, a shoulder of the stepped bore is engaged with the flange, and a first O-ring is disposed between the stepped bore and the flange.
3. The drive bevel gear assembly sealing structure of claim 1 wherein the flange is splined to the drive bevel gear via a splined bore; the shaft diameter of the flange is arranged in a central hole of the dust shield; the shaft diameter of the flange is provided with an annular groove for mounting a first O-shaped ring; the flange is internally provided with a stepped hole coaxial with the spline hole, a second O-shaped ring is arranged between the stepped hole and the drive bevel gear, and the upper end face of the stepped hole is matched with the flange face of the locking nut through an annular plane structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920949807.8U CN210290675U (en) | 2019-06-24 | 2019-06-24 | Driving bevel gear assembly sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920949807.8U CN210290675U (en) | 2019-06-24 | 2019-06-24 | Driving bevel gear assembly sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210290675U true CN210290675U (en) | 2020-04-10 |
Family
ID=70097958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920949807.8U Active CN210290675U (en) | 2019-06-24 | 2019-06-24 | Driving bevel gear assembly sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210290675U (en) |
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2019
- 2019-06-24 CN CN201920949807.8U patent/CN210290675U/en active Active
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