CN210290487U - Joint bearing unit structure - Google Patents
Joint bearing unit structure Download PDFInfo
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- CN210290487U CN210290487U CN201920941786.5U CN201920941786U CN210290487U CN 210290487 U CN210290487 U CN 210290487U CN 201920941786 U CN201920941786 U CN 201920941786U CN 210290487 U CN210290487 U CN 210290487U
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Abstract
The utility model provides a joint bearing unit structure, there is the braking support one end of braking camshaft, there is the cam support the other end of braking camshaft, be provided with braking support end joint bearing unit between braking camshaft and the braking support, be provided with cam support end joint bearing unit between braking camshaft and the cam support, braking support end joint bearing unit is the same with cam support end joint bearing unit structure, joint bearing outer ring, sealed separation blade and joint bearing inner ring integration form joint bearing unit together, sealed separation blade has played the effect of oil blanket and dust cover simultaneously, namely through integrating the function of joint bearing, oil blanket and dust cover together, realize wholly assembling on the rear drive axle assembly; compared with the original split assembly structure, the sealing performance is improved, the service life of the joint bearing is prolonged, and the assembly cost is reduced.
Description
Technical Field
The utility model belongs to car axle subassembly field, concretely relates to joint bearing unit structure.
Background
In the current domestic automobile axle, the distance between two brake cylinders of a rear drive axle used by a dumper is required to be smaller, so that a bolt is adopted to connect an axle housing of a cam bracket, and because the rear drive axle is bent and deformed during heavy load, joint bearings are required to be adopted on a brake bracket and the cam bracket, so that the brake cam can flexibly rotate without being blocked, and the brake safety performance is ensured. In the existing structure, a joint bearing, an oil seal and a dust shield are respectively arranged in a brake bracket and a cam bracket, and the split charging structure reduces the reliability of the bearing and the oil seal; the assembly efficiency is reduced.
Disclosure of Invention
The utility model discloses an in the rear drive axle that solves current tipper and use owing to pack into joint bearing, oil blanket, dust hood respectively and lead to the sealing performance of oil blanket to descend, the performance of bearing descends, assembly efficiency reduces the scheduling problem in braking support and the cam support, provides a joint bearing unit structure, promotes reliability and assembly efficiency.
In order to solve the technical problem, the utility model discloses an adopt following technical scheme to realize:
a joint bearing unit structure, one end of the brake camshaft has a brake support, the other end of the brake camshaft has a cam support, characterized in that, a brake support end joint bearing unit is arranged between the brake camshaft and the brake support, a cam support end joint bearing unit is arranged between the brake camshaft and the cam support, the brake support end joint bearing unit and the cam support end joint bearing unit have the same structure, and each of them includes a joint bearing outer ring, a sealing block sheet and a joint bearing inner ring, the joint bearing inner ring has a central through hole, the outer surface of the joint bearing inner ring is a convex spherical surface, the joint bearing outer ring has a central through hole, the outer surface of the joint bearing inner ring is pressed into the central through hole of the joint bearing outer ring, so that the joint surface of the joint bearing outer ring and the joint bearing inner ring is deformed into a concave spherical surface, two sides of the joint bearing outer ring respectively have a journal protruding along the axial direction of, the inner lip mouths of the two sealing separation blades are sleeved on the two shaft necks of the outer ring of the joint bearing;
the joint bearing inner ring in the brake bracket end joint bearing unit is sleeved on a shaft neck of a brake cam shaft, an outer lip of a sealing separation blade in the brake bracket end joint bearing unit is sleeved on the shaft neck of the brake cam shaft, one sealing separation blade in the brake bracket end joint bearing unit is attached to a shoulder in a central hole of a brake bracket, a No. 1 snap ring is arranged in a ring groove in the central hole of the brake bracket, and the end surface of the No. 1 snap ring is attached to the other sealing separation blade in the brake bracket end joint bearing unit and used for axially positioning the brake bracket end joint bearing unit;
the joint bearing inner ring in the joint bearing unit at the end of the cam support is sleeved on the shaft neck of the brake cam shaft, the outer lip of the sealing blocking piece in the joint bearing unit at the end of the cam support is sleeved on the shaft neck of the brake cam shaft, one sealing blocking piece in the joint bearing unit at the end of the cam support is attached to a shoulder in a central hole of the cam support, the No. 2 snap ring is arranged in a ring groove in the central hole of the cam support, and the end surface of the No. 2 snap ring is attached to the other sealing blocking piece in the joint bearing unit at the end of the cam support and used for axially positioning the joint bearing unit at the end of the cam support.
The further technical scheme comprises the following steps:
the axial cross section of the sealing separation blade is trapezoidal, a dustproof lip used for sealing is pasted on the inner surface of the sealing separation blade, the dustproof lip of the sealing separation blade is attached to the shaft neck of the brake camshaft, and the outer lip of the sealing separation blade is in clearance fit with the shaft neck of the brake camshaft.
The middle part of the outer cylindrical surface of the joint bearing outer ring is provided with an annular oil groove, the joint bearing outer ring is provided with a joint bearing outer ring oil hole which communicates the annular oil groove with the central through hole of the joint bearing outer ring, the middle part of the inner wall of the central through hole of the joint bearing inner ring is provided with an annular oil duct, the joint bearing inner ring is provided with a joint bearing inner ring oil hole which communicates the annular oil duct with the outer surface of the joint bearing inner ring, the brake support is provided with an oil nozzle, and the brake support is provided with an oil duct which communicates the oil nozzle with the annular oil groove.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model provides a joint bearing unit structure, joint bearing outer loop, sealed separation blade and joint bearing inner ring are integrated to form joint bearing unit together, and sealed separation blade has played the effect of oil blanket and dust cover simultaneously, just also be through the function integration with joint bearing, oil blanket and dust cover together, realize that whole assembly is to the rear drive axle assembly on. Compared with the original split assembly structure, the sealing performance is improved; the service life of the knuckle bearing is prolonged; the assembly cost is reduced.
Drawings
The invention will be further described with reference to the accompanying drawings:
fig. 1 is a schematic structural cross-sectional view of a joint bearing unit structure applied to a rear drive axle assembly according to the present invention;
FIG. 2 is an enlarged view of a portion I of FIG. 1, showing the connection of the cam carrier end knuckle bearing unit to the brake camshaft and cam carrier;
FIG. 3 is a partial enlarged view taken at II in FIG. 1, showing the connection of the brake spider end knuckle bearing unit with the brake camshaft and the brake spider;
fig. 4 is a sectional view of a brake bracket end spherical plain bearing unit in a spherical plain bearing unit structure according to the present invention, which is also a sectional view of a cam bracket end spherical plain bearing unit;
fig. 5 is a cross-sectional view of a sealing baffle plate in a joint bearing unit structure according to the present invention;
in the figure: 1. the brake device comprises a brake support, 2 parts of a brake support end joint bearing unit, 3.1 # snap rings, 4 parts of a brake camshaft, 5.2 # snap rings, 6 parts of a cam support, 7 parts of a cam support end joint bearing unit, 8 parts of a joint bearing outer ring, 9 parts of a sealing separation blade, 10 parts of a joint bearing inner ring, 11 parts of an annular oil duct, 12 parts of a joint bearing inner ring oil hole, 13 parts of an annular oil groove, 14 parts of an oil nozzle and 15 parts of an oil duct.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings:
the utility model provides a joint bearing unit structure, as shown in figure 1, applied in a rear drive axle assembly, as shown in figures 2 and 3, one end of a brake camshaft 4 in the rear drive axle assembly is provided with a brake bracket 1, the other end of the brake camshaft 4 is provided with a cam bracket 6, a brake bracket end joint bearing unit 2 is arranged between the brake camshaft 4 and the brake bracket 1, the brake camshaft 4 and the cam bracket 6 bracket are provided with a cam bracket end joint bearing unit 7, the brake bracket end joint bearing unit 2 and the cam bracket end joint bearing unit 7 have the same structure, as shown in figure 4, the joint bearing inner ring 10 comprises a joint bearing outer ring 8, a sealing separation blade 9 and a joint bearing inner ring 10, the joint bearing inner ring 10 is provided with a central through hole, the outer surface of the joint bearing inner ring 10 is a convex spherical surface, the joint bearing outer ring 8 is provided with a central through hole, the outer surface of the joint bearing inner ring 10 is pressed into the central through hole of the joint bearing outer ring 8, the joint surface of the joint bearing outer ring 8 and the joint bearing inner ring 10 is deformed to form a concave spherical surface, two sides of the joint bearing outer ring 8 are respectively provided with a journal protruding along the axial direction of the central through hole, and the inner lip mouths of the two sealing separation blades 9 are sleeved on the two journals of the joint bearing outer ring 8;
the knuckle bearing inner ring 10 in the knuckle bearing unit 2 at the end of the brake support is sleeved on a journal of a brake camshaft 4, an outer lip of a sealing baffle 9 in the knuckle bearing unit 2 at the end of the brake support is sleeved on the journal of the brake camshaft 4, one sealing baffle 9 in the knuckle bearing unit 2 at the end of the brake support is attached to a shoulder in a central hole of the brake support 1, a No. 1 snap ring 3 is arranged in a ring groove in the central hole of the brake support 1, and the end surface of the No. 1 snap ring 3 is attached to the other sealing baffle 9 in the knuckle bearing unit 2 at the end of the brake support and is used for axially positioning the knuckle bearing unit 2 at the end of the brake support;
the knuckle bearing inner ring 10 in the cam bracket end knuckle bearing unit 7 is sleeved on a journal of the brake camshaft 4, an outer lip of a sealing blocking piece 9 in the cam bracket end knuckle bearing unit 7 is sleeved on the journal of the brake camshaft 4, one sealing blocking piece 9 in the cam bracket end knuckle bearing unit 7 is attached to a shoulder in a central hole of the cam bracket 6, the No. 2 snap ring 5 is arranged in a ring groove in the central hole of the cam bracket 6, and the end face of the No. 2 snap ring 5 is attached to the other sealing blocking piece 9 in the cam bracket end knuckle bearing unit 7 and used for axially positioning the cam bracket end knuckle bearing unit 7.
As shown in fig. 5, the axial cross section of the sealing baffle plate 9 is trapezoidal, a dust lip for sealing is adhered to the inner surface of the sealing baffle plate 9, the dust lip of the sealing baffle plate 9 is attached to the journal of the brake camshaft 4, and the outer lip of the sealing baffle plate 9 is in clearance fit with the journal of the brake camshaft 4.
As shown in fig. 3 and 4, an annular oil groove 13 is formed in the middle of the outer cylindrical surface of the knuckle bearing outer ring 8, a knuckle bearing outer ring oil hole 16 which communicates the annular oil groove 13 with the central through hole of the knuckle bearing outer ring 8 is formed in the knuckle bearing outer ring 8, an annular oil passage 11 is formed in the middle of the inner wall of the central through hole of the knuckle bearing inner ring 10, a knuckle bearing inner ring oil hole 12 which communicates the annular oil passage 11 with the outer surface of the knuckle bearing inner ring 10 is formed in the knuckle bearing inner ring 10, an oil nozzle 14 is formed in the brake support 1, and an oil passage 15 which communicates the oil nozzle 14 with the annular oil groove 13 is formed in the brake support 1.
Claims (3)
1. A joint bearing unit structure is characterized in that a brake bracket (1) is arranged at one end of a brake cam shaft (4), a cam bracket (6) is arranged at the other end of the brake cam shaft (4), a brake bracket end joint bearing unit (2) is arranged between the brake cam shaft (4) and the brake bracket (1), a cam bracket end joint bearing unit (7) is arranged between the brake cam shaft (4) and the cam bracket (6), the brake bracket end joint bearing unit (2) and the cam bracket end joint bearing unit (7) have the same structure and respectively comprise a joint bearing outer ring (8), a sealing baffle plate (9) and a joint bearing inner ring (10), the joint bearing inner ring (10) is provided with a central through hole, the outer surface of the joint bearing inner ring (10) is a convex spherical surface, the joint bearing outer ring (8) is provided with a central through hole, the outer surface of the joint bearing inner ring (10) is squeezed into the central through hole of the joint bearing outer ring (8), the joint surface of the joint bearing outer ring (8) and the joint bearing inner ring (10) is deformed to form a concave spherical surface, two sides of the joint bearing outer ring (8) are respectively provided with a journal protruding along the axial direction of the central through hole, and the inner lip mouths of two sealing blocking pieces (9) are sleeved on the two journals of the joint bearing outer ring (8);
a joint bearing inner ring (10) in a brake bracket end joint bearing unit (2) is sleeved on a shaft neck of a brake cam shaft (4), an outer lip of a sealing baffle (9) in the brake bracket end joint bearing unit (2) is sleeved on the shaft neck of the brake cam shaft (4), one sealing baffle (9) in the brake bracket end joint bearing unit (2) is attached to a shoulder in a central hole of a brake bracket (1), a No. 1 snap ring (3) is arranged in a ring groove in the central hole of the brake bracket (1), and the end surface of the No. 1 snap ring (3) is attached to the other sealing baffle (9) in the brake bracket end joint bearing unit (2) and is used for axially positioning the brake bracket end joint bearing unit (2);
the knuckle bearing inner ring (10) in the cam bracket end knuckle bearing unit (7) is sleeved on a shaft neck of the brake cam shaft (4), an outer lip of a sealing blocking piece (9) in the cam bracket end knuckle bearing unit (7) is sleeved on the shaft neck of the brake cam shaft (4), one sealing blocking piece (9) in the cam bracket end knuckle bearing unit (7) is attached to a shoulder in a central hole of the cam bracket (6), a No. 2 clamping ring (5) is arranged in a ring groove in the central hole of the cam bracket (6), and the end surface of the No. 2 clamping ring (5) is attached to another sealing blocking piece (9) in the cam bracket end knuckle bearing unit (7) and used for axially positioning the cam bracket end knuckle bearing unit (7).
2. The oscillating bearing unit structure according to claim 1, wherein the axial cross section of the sealing baffle (9) is trapezoidal, a dust lip for sealing is adhered to the inner surface of the sealing baffle (9), the dust lip of the sealing baffle (9) is attached to the journal of the brake camshaft (4), and the outer lip of the sealing baffle (9) is in clearance fit with the journal of the brake camshaft (4).
3. The oscillating bearing unit structure according to claim 1, wherein an annular oil groove (13) is formed in the middle of the outer cylindrical surface of the oscillating bearing outer ring (8), an oscillating bearing outer ring oil hole (16) for communicating the annular oil groove (13) with the central through hole of the oscillating bearing outer ring (8) is formed in the oscillating bearing outer ring (8), an annular oil passage (11) is formed in the middle of the inner wall of the central through hole of the oscillating bearing inner ring (10), an oscillating bearing inner ring oil hole (12) for communicating the annular oil passage (11) with the outer surface of the oscillating bearing inner ring (10) is formed in the oscillating bearing inner ring (10), an oil nipple (14) is formed in the brake bracket (1), and an oil passage (15) for communicating the oil nipple (14) with the annular oil groove (13) is formed in the brake bracket (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920941786.5U CN210290487U (en) | 2019-06-21 | 2019-06-21 | Joint bearing unit structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920941786.5U CN210290487U (en) | 2019-06-21 | 2019-06-21 | Joint bearing unit structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210290487U true CN210290487U (en) | 2020-04-10 |
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ID=70097996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920941786.5U Active CN210290487U (en) | 2019-06-21 | 2019-06-21 | Joint bearing unit structure |
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| Country | Link |
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| CN (1) | CN210290487U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113085444A (en) * | 2021-05-20 | 2021-07-09 | 一汽解放汽车有限公司 | Hub reduction assembly and hub reduction drive axle |
-
2019
- 2019-06-21 CN CN201920941786.5U patent/CN210290487U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113085444A (en) * | 2021-05-20 | 2021-07-09 | 一汽解放汽车有限公司 | Hub reduction assembly and hub reduction drive axle |
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