CN207246287U - A kind of rear axle drum brake back-plate that can be non-maintaining - Google Patents
A kind of rear axle drum brake back-plate that can be non-maintaining Download PDFInfo
- Publication number
- CN207246287U CN207246287U CN201721171955.9U CN201721171955U CN207246287U CN 207246287 U CN207246287 U CN 207246287U CN 201721171955 U CN201721171955 U CN 201721171955U CN 207246287 U CN207246287 U CN 207246287U
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- CN
- China
- Prior art keywords
- bearing unit
- deep groove
- groove ball
- ball bearing
- plate body
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Abstract
It the utility model is related to rear axle drum brake back-plate that can be non-maintaining, it includes back-plate body (2), seal (11), biserial deep groove ball bearing unit (10), the integral structure that wherein back-plate body (2) is formed with bearing outer ring using casting, sealing (11) is embedded into mounted in the end face of biserial deep groove ball bearing unit (10) by the lip of skeleton (12) inner rubber (14), biserial deep groove ball bearing unit (10) is by biserial deep groove ball bearing roller (16) and bearing unit inner ring (15) in the centre bore on back-plate body (2) head, the hole of bearing unit inner ring is interference fit with camshaft.The utility model can ensure to install the concentricity of camshaft, greasing operates frequent during saving later stage vehicle maintenance maintenance, also save lubricating grease at least 75%, in addition effective sealing can be realized, reduce grease to do, wear big failure-frequency phenomenon incidence, while improve braking safety.
Description
Technical field
The back-plate of automobile axle drum brake is the utility model is related to, particularly one kind can be carried out non-maintaining and filled
With simple back-plate new construction.
Background technology
Rear axle drum brake is made of gas chamber, air chamber support, camshaft, back-plate and brake shoe assembly etc., its
Middle back-plate is mounted on automobile axle, as shown in Figure 1, by the first bushing 1 and the second bushing 4 and back-plate body 2
Composition.It is fixedly connected by the bottom plate mounting hole 5 of 6 equidimensions with rear axle, due to back-plate point or so part, removes bottom plate
Outside mounting hole 5, other parts are axisymmetricly distributed, and the top is consistent lubricant hole 3, are periodically back-plate body by the consistent lubricant hole
2 head through holes carry out injecting grease for lubricating；There is dust-proof cage apertures 6 and ABS holes 9 in middle part, and an orthogonal curvatures boss of bottom is to use
In the structure of installation brake-shoe, positioned by hoof pin mounting hole 7 below and anti-turn screw hole 8.
Strutting for skidding hoof needs camshaft through the head center hole of back-plate body 2 to support it to be turned round
The transmission of square, therefore back-plate needs to bear larger reaction force in brake process, to braking bottom in the twist process
The abrasion of plate is essential.And back-plate body 2 is independent casting, be currently using the bushing of two kinds of specifications come
As the support wear-out part in back-plate head center hole, the ruler by forcing press by the bushing of two kinds of specifications according to interference fit
It is very little, carry out secondary press-fitting to it, when long-time service needs to inject lubricating grease, but installs in the back-plate head after camshaft
Heart hole can not stuffing, so can be in order to installing initial stage and when later stage maintenance is regular so open consistent lubricant hole 3 above its structure
Grease up.But due to its bushing press-mounting, easily to occur concentricity inadequate, causes camshaft installation deviation occur, makes bushing
Internal copper material is worn after camshaft is filled, and causes copper scale to remain in bush hole intermediate region, the long-term system after greasing
Impurity occurs during dynamic and disorderly enters caused excessive wear, and the frequent and automobile later period maintenance maintenance of greasing operation fail as
It is real to perform regular greasing, therefore be easy to cause bushing and the equal serious wear of camshaft, finally make effect of the camshaft in gravity
Lower generation one-way abrasion, causes grease to do, the phenomenon of unilateral serious wear, torque deficiency when causing to brake, the braking of vehicle bridge both sides
Torque matching is uneven, and vehicle brake side-slipping easily occurs.
The content of the invention
Technical problem to be solved in the utility model is：To avoid the shortcoming present in the above-mentioned prior art, carry
Non-maintaining back-plate is carried out for a kind of, using the structure of second generation bearing unit come the structure of re-optimization bottom plate, with
Phase can realize the regular grease injecting mode of back-plate and improve, and the work of maintaining is reduced using new construction, is carried at the same time
High braking safety.
Technical solution is used by the utility model solves its technical problem：Including back-plate body, sealing, biserial
The integral structure that deep groove ball bearing unit, wherein back-plate body are formed with bearing outer ring using casting, sealing pass through bone
The lip of frame inner rubber is embedded into be passed through double mounted in the end face of biserial deep groove ball bearing unit, biserial deep groove ball bearing unit
Row deep groove ball bearing roller and bearing unit inner ring are in the centre bore of back-plate body head, the hole of bearing unit inner ring
It is interference fit with camshaft.
The sealing is made of skeleton, ring spring and rubber, using symmetrical arrangement, wherein ring spring and rubber
Among the embedded skeleton of glue, the elastomeric material insertion bearing face of lip, sealing surface inner side is strutted by ring spring.
The biserial deep groove ball bearing unit, its biserial deep groove ball bearing roller be arranged symmetrically in bearing unit inner ring with
Between the groove of back-plate body head centre bore, the biserial deep groove ball bearing roller and bearing unit inner ring and back-plate
Implement rolling friction in the case where being filled with lubricating grease operating mode on the inside of body head centre bore.
Compared with the prior art the utility model, has following main beneficial effect：
The utility model saves the boring of traditional braking backplane header centre bore by using the structure of non-maintaining bearing unit
Hole process, can not only ensure to install the concentricity of camshaft, the bearing capacity of its bearing unit is also stronger than plain bushing, can solve
The problem of certainly braking moment is insufficient, and on the basis of traditional structure needs regular greasing to strengthen lubrication, it is used non-maintaining
Structure design, save later stage vehicle maintenance maintenance during greasing operate it is frequent, also save lubricating grease at least 75%.With
This at the same time, hole and the camshaft of bearing unit inner ring can be interference fitted, rubber lip on the inside of oil tight skeleton insertion bearing unit
End face reduces grease and does, wears big failure-frequency phenomenon incidence, ensure to a certain extent, it can be achieved that effectively sealing
Torque output is uniform, realizes that the pairing deviation of left and right braking moment is controlled within 5%, prevents brake side-slipping.
Brief description of the drawings
Fig. 1 is traditional braking baseplate internal structure exploded view；
Fig. 2 is the non-maintaining bearing unit back-plate internal structure exploded view of the utility model；
Fig. 3 is the half-sectional two-dimensional structure figure of the non-maintaining bearing unit back-plate of the utility model；
Fig. 4 is partial enlarged view at A in Fig. 2.
In figure：1. the first bushing, 2. back-plate bodies, 3. consistent lubricant holes, 4. second bushings, 5. bottom plate mounting holes, 6. is anti-
Dust hood hole, 7. hoof pin mounting holes, 8. anti-turn screw holes, 9.ABS holes, 10. biserial deep groove ball bearing units, 11. sealings, 12. bones
Frame, 13. ring springs, 14. rubber, 15. bearing unit inner rings, 16. biserial deep groove ball bearing rollers.
Embodiment
With reference to embodiment and attached drawing, the utility model is described in further detail, but does not limit the utility model.
Rear axle drum brake back-plate that can be non-maintaining provided by the utility model, is in traditional rear axle drum brake
Improve what is come on the basis of device back-plate, its structure as shown in Figure 2, Figure 3 and Figure 4, including back-plate body 2, biserial zanjon
Ball bearing unit 10, sealing 11.
The utility model carries out Optimal Structure Designing to the head center through hole of back-plate body 2, is specifically：Save biography
The bore hole process of backplane header centre bore is moved in controlling, the structure with one-step casting into alternative traditional bearing outer ring, the i.e. second generation
The structure of bearing unit, makes biserial deep groove ball bearing roller 16 to be rolled in the centre bore groove of Novel brake bottom plate body 2.
The sealing 11 is embedded into mounted in bearing unit end face by the lip of 12 inner rubber 14 of skeleton, is used for realization
Effectively sealing.The sealing 11 uses symmetrical arrangement, is made of skeleton 12, ring spring 13 and 14 material of rubber, wherein：Ring
Among shape spring 13 and the embedded skeleton 12 of rubber 14, the elastomeric material of lip can be embedded in bearing face, and sealing surface inner side is by ring
Shape spring 13 struts, it can be achieved that pretension acts on.
The biserial deep groove ball bearing unit 10, new system is mounted in by double-row bearing roller 16 and bearing unit inner ring 15
In the centre bore of dynamic backplane header, hole and the camshaft of bearing unit inner ring can be interference fitted, and be used to support the rotation of camshaft
And the braking moment produced.The biserial deep groove ball bearing unit uses the structure of second generation bearing unit, is rolled by deep groove ball bearing
Son 16 and bearing unit inner ring 15 form, wherein：Roller is arranged symmetrically in bearing unit inner ring 15 and Novel brake backplane header
Between the groove of centre bore, with having rolling friction on the inside of bearing unit inner ring 15 and back-plate head center hole, actually make
It can shift to an earlier date grease up with middle.
The utility model takes the design method of second generation bearing unit, by the way that back-plate body 2 is carried out and tradition
The unitary design of bearing outer ring, i.e., the outer ring one-step casting shaping using back-plate body 2 as bearing, cancels traditional design
Neck increases consistent lubricant hole 3 on bottom plate, biserial deep groove ball bearing unit 10 is once pressed into back-plate body 2, and
At the same time disposable greasing, after installation sealing 11, not only can be to avoid the concentricity of two kinds of specification bushing press-mountings of traditional structure
It is not high, and after camshaft is loaded, hole and the camshaft of bearing unit inner ring 15 are interference fitted, and can bear camshaft braking
When torque transmission reaction radial load, be not easy to cause looseness, reduce the abrasion of bearing unit inner ring 15 and camshaft.And
In later period maintenance and servicing operations, it is ensured that grease does not leak, and can cancel under conditions of equal braking ability interim regular
The operation of greasing, reduces the difficulty of maintenance, can also reduce wear rate, avoids the serious wear caused by grease is done from making system
Kinetic moment reduces, and braking safety can be improved based on this, reduces braking moment imbalance, effectively avoids brake side-slipping.
The structure innovation point of the utility model：
(1) structure design of biserial deep groove ball bearing unit is utilized, is improved after being pressed the bushing of 2 kinds of specifications in traditional structure
Caused coaxiality of inner hole not high the problem of causing brake force insufficient；
(2) using the design of bearing unit outer ring and back-plate body integral type, it can be achieved that disposable greasing, without after
Stuffing lubrication during phase vehicle maintenance, avoids the problem that grease is dry in traditional structure, realizes non-maintaining function.
(3) in new structure bushing is substituted using bearing unit, and by direct one-step casting inside backplane header centre bore
Into the design form of the outer ring structure of alternative bearing unit, i.e. second generation bearing unit, save in traditional braking backplane header
The bore hole process in heart hole；Secondly, hole and the camshaft of bearing unit inner ring can be interference fitted, and substituted former traditional structure and inlayed bushing
Clearance fit, reduce abrasion；3rd, sealing uses symmetrical arrangement, by the rubber lip on the inside of its skeleton that its is embedding
Enter bearing unit end face, realize effectively sealing.
Rear axle drum brake back-plate that can be non-maintaining provided by the utility model, its course of work are：Will braking
Bottom plate is installed on automobile axle, after assembling camshaft and brake-shoe, you can by the adjusted arm of gas chamber thrust by camshaft
The moment loading of generation realizes braking, the hole of camshaft and the bearing unit inner ring in back-plate head center hole on brake-shoe
With interference fit, realize that camshaft is synchronous with the rotation of bearing unit inner ring, centre is rolled is rolled by the deep groove ball bearing of bearing unit
Son undertakes, and can effectively reduce abrasion；Both ends are sealed against by sealing structure, realize that lubricating grease persistently uses.
Claims (3)
1. a kind of rear axle drum brake back-plate that can be non-maintaining, it is characterised in that including back-plate body (2), sealing
(11), biserial deep groove ball bearing unit (10), wherein back-plate body (2) are formed integrated with bearing outer ring using casting
Structure, sealing (11) are embedded into mounted in biserial deep groove ball bearing unit (10) by the lip of skeleton (12) inner rubber (14)
End face, biserial deep groove ball bearing unit (10) is mounted in by biserial deep groove ball bearing roller (16) and bearing unit inner ring (15)
In the centre bore on back-plate body (2) head, hole and the camshaft of bearing unit inner ring are interference fit.
2. rear axle drum brake back-plate that can be non-maintaining according to claim 1, it is characterised in that sealing (11)
Using symmetrical arrangement, it is made of skeleton (12), ring spring (13) and rubber (14), wherein ring spring (13) and rubber
(14) among embedded skeleton (12), the elastomeric material insertion bearing face of lip, sealing surface inner side is supportted by ring spring (13)
Open.
3. rear axle drum brake back-plate that can be non-maintaining according to claim 1, it is characterised in that described is double
Row deep groove ball bearing unit (10), its biserial deep groove ball bearing roller (16) are arranged symmetrically in bearing unit inner ring (15) and braking
Between the groove in bottom plate body (2) head center hole, the biserial deep groove ball bearing roller (16) and bearing unit inner ring (15) and
Implement rolling friction in the case where being filled with lubricating grease operating mode on the inside of back-plate body (2) head center hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721171955.9U CN207246287U (en) | 2017-09-13 | 2017-09-13 | A kind of rear axle drum brake back-plate that can be non-maintaining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721171955.9U CN207246287U (en) | 2017-09-13 | 2017-09-13 | A kind of rear axle drum brake back-plate that can be non-maintaining |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207246287U true CN207246287U (en) | 2018-04-17 |
Family
ID=61888480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721171955.9U Expired - Fee Related CN207246287U (en) | 2017-09-13 | 2017-09-13 | A kind of rear axle drum brake back-plate that can be non-maintaining |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207246287U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113819166A (en) * | 2021-09-30 | 2021-12-21 | 山东力得汽车科技股份有限公司 | Brake bottom plate |
| US11454289B2 (en) | 2020-02-21 | 2022-09-27 | Bendix Commercial Vehicle Systems Llc | Unitary bracket for mounting a brake assembly and brake actuator |
-
2017
- 2017-09-13 CN CN201721171955.9U patent/CN207246287U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11454289B2 (en) | 2020-02-21 | 2022-09-27 | Bendix Commercial Vehicle Systems Llc | Unitary bracket for mounting a brake assembly and brake actuator |
| CN113819166A (en) * | 2021-09-30 | 2021-12-21 | 山东力得汽车科技股份有限公司 | Brake bottom plate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180417 Termination date: 20180913 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |