CN202768793U - End portion sealing structure of drive axle main reducer - Google Patents
End portion sealing structure of drive axle main reducer Download PDFInfo
- Publication number
- CN202768793U CN202768793U CN201220450475.7U CN201220450475U CN202768793U CN 202768793 U CN202768793 U CN 202768793U CN 201220450475 U CN201220450475 U CN 201220450475U CN 202768793 U CN202768793 U CN 202768793U
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- sealing
- axle
- oil
- reducing gear
- seal structure
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Abstract
The utility model discloses an end portion sealing structure of a drive axle main reducer. The end portion sealing structure comprises an end portion casing body (1), a bearing (2), a shaft (3) and a flange (4). The shaft is compressed on the end portion casing body (1) through the bearing (2) in a bearing mode and protrudes outward, the flange (4) is arranged on the end portion of the shaft (3) in a sleeved mode and abuts against the bearing (2) along the axial direction of the shaft (3), an oil seal (5) is arranged on the outer periphery face of the flange (4), the oil seal (5) is fixedly arranged on the end portion casing body (1) through an oil seal seat (6), wherein a first sealing interface (A) roughly parallel to the center axis line (HH') of the shaft (3) is formed between the end portion casing body (1) and the oil seal seat (6), a second sealing interface (B) with a sealing ring (7) is further formed between the end portion casing body (1) and the oil seal seat (6), and thus dual-sealing effects are formed. The sealing effects are better and steady and reliable.
Description
Technical field
The utility model relates to vehicle drive axle, particularly, relates to a kind of end seal structure of main reducing gear of drive axle.
Background technique
The main reducing gear of common ransaxle at the sealing of input end or the output terminal sealing configurations that comprise oil sealing and oil sealing base that adopt, to reach the purpose of final oil sealing more.In the main reducing gear end seal structure as shown in Figure 1, on mating face, C place, may produce leakage of oil between the axle 3 of spline fitted and the flange 4, thereby usually be sealed at the shaft shoulder place of axle 3 setting " O " shape seal ring 10.Between bearing 2 and flange 4, also easily in the generation leakage of oil of the outer circumferential face D place of flange 4, thereby usually seal by oil sealing 5 and prevent that extraneous dust etc. from entering.Wherein, oil sealing base 6 is by on the fastening upper surface that is installed in end housing 1 of clamping bolt 9, the mating face E of the two is rendered as general horizontal direction in Fig. 1, thereby axle 3 vertical placement or alternate manner for example during horizontal placing as shown in Figure 1 no matter, fluid all easily produces leakage of oil at mating face E place under the self gravitation effect.In this sealing configuration, installation and operation after a period of time often easily the D place in Fig. 1 and E place the dripping of lubricant oil, leakage, oil impregnate phenomenon appear, " O " shape seal ring 10 easily produces breakages, sealing effect is not good, stable deficiency causes maintenance rate high.
The model utility content
The end seal structure that the purpose of this utility model provides a kind of main reducing gear of drive axle improves sealing effect, prevents that leakage of oil and lubricant oil from overflowing.
To achieve these goals, the utility model provides a kind of this end seal structure to comprise end housing, bearing, axle and flange, described axle by described bearing pressure-bearing on the housing of described end and protruding, described flange sleeve is located at the end of described axle and axially being resisted against on the described bearing along this axle, the outer circumferential face of this flange is provided with oil sealing, this oil sealing is fixedly installed on the housing of described end by oil sealing base, it is characterized in that, be formed with the first sealing engagement face of the central axis that is roughly parallel to described axle between described end housing and the described oil sealing base.
Preferably, described end housing forms at described the first sealing engagement face with described oil sealing base and is threaded.
Preferably, forming taper pipe thread between described end housing and the described oil sealing base is connected.
Preferably, be coated with the seepage-proof oil sealant layer on described the first sealing engagement face.
Preferably, described seepage-proof oil sealant layer is the threaded locking sealing gum layer.
Preferably, described oil sealing is two outside framework oil seals along the axial arranging of described axle.
Preferably, be spline joint between described flange and the described axle, this flange is by the nut check on the outer axle journal that is installed in described axle, wherein, is coated with the plane sealing glue-line at the spline joint place of the shaft shoulder section of described outer axle journal.
Preferably, also be formed with the second sealing engagement face between above-mentioned end housing and the described oil sealing base, be provided with seal ring in this second sealing engagement face.
Preferably, described oil sealing base is formed be used to the inner groovy that described seal ring is installed at described the second sealing engagement face, be formed with stepped part on the housing of described end between described the first sealing engagement face and described the second sealing engagement face, the edge of this stepped part is formed with chamfering.
Preferably, described seal ring is " O " RunddichtringO, rubbery flat gasket or star-like seal ring.
Pass through technique scheme, in the end seal structure according to main reducing gear of drive axle of the present utility model, by between end housing and oil sealing base, forming the first sealing engagement face of the central axis be roughly parallel to axle, to form the first sealing, prevent that this mating face from producing leakage of oil or overflow.Wherein, the first sealing engagement face roughly arranges vertically, thereby can alleviate fluid spilling under the self gravitation effect, and this first sealing engagement face can be preferably the face of being threadedly engaged with, and plays simultaneously to connect and seal action.Further, can also make the second sealing engagement face that forms between end housing and the oil sealing base with seal ring, seal to consist of second, thereby consist of reliable and stable sealing, reduce and safeguard.
Other feature and advantage of the present utility model will partly be described in detail in embodiment subsequently.
Description of drawings
Accompanying drawing is to be used to provide further understanding of the present utility model, and consists of the part of specification, is used from explanation the utility model with following embodiment one, but does not consist of restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation according to the end seal structure of a kind of main reducing gear of drive axle of prior art;
Fig. 2 is the structural representation according to the end seal structure of a kind of main reducing gear of drive axle of the present utility model;
Fig. 3 is the plan view of the oil sealing base among Fig. 2;
Fig. 4 is the P-P sectional view among Fig. 3;
Fig. 5 is the amplification diagram of the circle part among Fig. 4;
Fig. 6 is that end housing among Fig. 2 is at the local enlarged diagram of seal ring mounting zone.
Description of reference numerals
1 end housing, 2 bearings
3 axles, 4 flanges
5 oil sealings, 6 oil sealing bases
7 seal rings, 8 nuts
9 fixing bolt 10 " O " shape seal rings
11 stepped part, 12 chamferings
31 outer axle journals, 32 shaft shoulder sections
61 inner groovy A the first sealing engagement face
The B second face HH ' central axis that is tightly connected
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is elaborated.Should be understood that, embodiment described herein only is used for description and interpretation the utility model, is not limited to the utility model.
In the utility model, in the situation that do opposite explanation, the noun of locality of use as " upper and lower " normally for direction shown in the drawings or for vertically, each parts mutual alignment relationship description word on the vertical or gravitational direction.
As shown in Figure 2, the utility model provides a kind of end seal structure of main reducing gear of drive axle, this end seal structure comprises end housing 1, bearing 2, axle 3 and flange 4, described axle 3 by described bearing 2 pressure-bearings on described end housing 1 and protruding, described flange 4 is set in the end of described axle 3 and along on the described bearing 2 of axially being resisted against of this axle 3, the outer circumferential face of this flange 4 is provided with oil sealing 5, this oil sealing 5 is fixedly installed on the described end housing 1 by oil sealing base 6, wherein, be formed with the first sealing engagement face A of the central axis HH ' that is roughly parallel to described axle 3 between described end housing 1 and the described oil sealing base 6.Design of the present utility model is on the mating face of oil sealing base 5 between end housing 1 at least sealing to be set, with oil-leakage-prevention with overflow.For structure shown in Figure 1, at least one sealing is set at the E place namely.As previously mentioned, because mating face E is rendered as general horizontal direction in Fig. 1, thereby axle 3 vertical placement or alternate manner for example during horizontal placing as shown in Figure 1 no matter, fluid all easily produces leakage of oil at mating face E place under the self gravitation effect.For this reason, the first sealing engagement face A is set to be roughly parallel to the central axis HH ' of described axle 3 in the utility model.Like this, when as shown in Figure 2 vertical placement of axle 3, obviously fluid is difficult to spill the possibility of only overflowing under the self gravitation effect.Perhaps, if when main reducing gear is installed rear axle 3 horizontal placing, also relatively greatly alleviated fluid spilling under the self gravitation effect.Thereby, mating face direction between end housing 1 and described oil sealing base 6 changes and forms sealing configuration on the mating face, when namely forming the first sealing engagement face A, can solve well the especially Lubricants of bearing 2 problem that spills or overflow from the mating face between end housing 1 and the described oil sealing base 6 of fluid.
For reaching better sealing effect, compared to sealing configuration shown in Figure 1, according to being designed to be threaded with between end housing 1 and the oil sealing base 6 in the sealing configuration of the present utility model, namely the first sealing engagement face forms the thread seal face.Compared to the mode that is fastenedly connected of clamping bolt shown in Figure 19, be threaded firm equally, connect better tightness but can form more closely on the mating face.Especially when forming taper pipe thread between end housing 1 and the oil sealing base 6 and be connected, then on thread joint face, namely reached suitable sealing effect.Sealing thread face on end housing 1 or the oil sealing base 6 is not limited to the taper pipe thread face, but with the sealing thread face of tapering all can, all have preferably sealability.Further, in the present embodiment also the thread joint face between end housing 1 and oil sealing base 6 apply the seepage-proof oil sealant layer, to form the thread seal face.This seepage-proof oil sealant layer has consisted of double-deck time sealing in thread joint face in conjunction with thread seal.This kind seepage-proof oil sealer has various ways, but is applied on the thread joint face, and then the seepage-proof oil sealant layer is preferably the threaded locking sealing gum layer that is exclusively used in thread locking.
To sum up, comparison diagram 1 and Fig. 2 as seen, direction and the shape on the mating face between end housing 1 and the oil sealing base 6 have been done Variant Design.The direction on mating face changes, and has alleviated at least the spill problem of Lubricants under the self gravitation effect, and the Seal Design on mating face then can further solve the problem that fluid overflows.In addition, consider that the running shaft of main reducing gear drives under the high rotating speed and high pressure situation of fluid under operating mode, also can be formed with the second sealing engagement face B between end housing 1 and the described oil sealing base 6, be provided with seal ring 7 in this second sealing engagement face B.Seal ring has more operability, installs more firm and has better sealing effect compared to seal form such as sealant layers, can be used as basic Sealing, produces the problem of oil spilling and leakage of oil from this mating face with basic solution.
To shown in Figure 5, for seal ring 7 is installed, oil sealing base 6 is formed with inner groovy 61 at the second sealing engagement face B such as Fig. 3, and seal ring 7 embeds in this inner groovy 61, then along with the screw thread of oil sealing base 6 is installed and attached on the internal face of end housing 1.And, as shown in Figure 6, connection is more firm, installation is easy to process and reach better sealing effect in order to make, between the second sealing engagement face B and the first sealing engagement face A, be formed with stepped part 11 on the end housing 1, rather than so that the first sealing engagement face A and the second sealing engagement face B coincidence are a face, this is because under the coincidence situation, the processing of two sealing surfaces not only needs to consider machining accuracy separately, also need to consider the unification of the precision reference between two structures, so that difficulty of processing strengthens.At this moment, in the working procedure of main reducing gear, if owing to jolting or linkage structure fluffs, may the scratch edge of this stepped part 11 of seal ring 7 causes seal ring damaged in the course of time.For this reason, be formed with chamfering 12 at the edge of this stepped part 11, such as rounded corner or such as straight chamfering of 15 ° to 25 ° etc., to avoid forming sharp comer to seal ring 7 injuries.
As seen from Figure 2, oil sealing base 6 lower ends are supported on the outer ring of bearing 2, and the second above-mentioned sealing engagement face B and the first sealing engagement face A spill the path to the lubricant oil that is connected the slit between the outer ring of this bearing 2 and oil sealing base 6 and the end housing 1 to seal.But the lower end of flange 4 then is to be supported on the inner ring of bearing 2, and fluid spills by the outer circumferential face of bearing 2 from flange 4 equally.At this moment, only be provided with a Sealing in the sealing configuration of Fig. 1, i.e. an oil sealing 5.This single oil sealing 5 is not only wanted oil-leakage-prevention, also will prevent entering of extraneous flying dust etc., and sealing effect is clear.Therefore, in the sealing configuration of the present utility model as shown in Figure 2, the installation form that to be provided with two oil sealing 5(at the D place be inner oil seal and outer oil seal), these two oil sealings 5 are preferably along two outside framework oil seals of the axial arranging of axle 3.Two outside framework oil seals have herein consisted of the three seals of sealing structure, i.e. two outside framework oil seals.
In addition, as mentioned above, be spline joint between flange 4 and the axle 3, and flange 4 is by nut 8 lockings on the outer axle journal 31 that is installed in axle 3.(C place), especially spline joint place between the outer surface of flange 4 internal surfaces and axle 3 easily have a small amount of Lubricants to ooze out.If as in shaft shoulder section " O " shape seal ring 10 being set in the sealing configuration of Fig. 1, at fastening time of nut, " O " shape seal ring is yielding and damaged, and " O " shape seal ring is difficult to contain all spline joint slits of shaft shoulder section 32.Thereby, in the sealing configuration of the present utility model outside the spline joint place of the shaft shoulder section 32 of axle journal 31 be coated with the plane sealing glue-line, consist of the 4th road sealing, apply flat sealant and form the intactly sealing effect of sealing surface and Geng Jia.
Need to prove, above-mentioned seal ring 7 can be the various ways such as " O " RunddichtringO, rubbery flat gasket or star-like seal ring, can select according to needs are installed.
Below describe by reference to the accompanying drawings preferred implementation of the present utility model in detail; but; the utility model is not limited to the detail in the above-mentioned mode of execution; in technical conceive scope of the present utility model; can carry out multiple simple variant to the technical solution of the utility model, these simple variant all belong to protection domain of the present utility model.
Need to prove in addition, each concrete technical characteristics described in above-mentioned embodiment in reconcilable situation, can make up by any suitable mode, for fear of unnecessary repetition, the utility model is to the no longer separately explanation of various possible compound modes.
In addition, also can carry out combination in any between the various mode of execution of the present utility model, as long as it is without prejudice to thought of the present utility model, it should be considered as content disclosed in the utility model equally.
Claims (10)
1. the end seal structure of main reducing gear of drive axle, this end seal structure comprises end housing (1), bearing (2), axle (3) and flange (4), described axle (3) is upper and protruding at described end housing (1) by described bearing (2) pressure-bearing, described flange (4) is set in the end of described axle (3) and axially being resisted against on the described bearing (2) along this axle (3), the outer circumferential face of this flange (4) is provided with oil sealing (5), this oil sealing (5) is fixedly installed on the described end housing (1) by oil sealing base (6), it is characterized in that, be formed with the first sealing engagement face (A) of the central axis that is roughly parallel to described axle (3) (HH ') between described end housing (1) and the described oil sealing base (6).
2. the end seal structure of main reducing gear of drive axle according to claim 1 is characterized in that, described end housing (1) forms at described the first sealing engagement face (A) with described oil sealing base (6) and is threaded.
3. the end seal structure of main reducing gear of drive axle according to claim 2 is characterized in that, forms taper pipe thread between described end housing (1) and the described oil sealing base (6) and is connected.
4. the end seal structure of main reducing gear of drive axle according to claim 2 is characterized in that, is coated with the seepage-proof oil sealant layer on described the first sealing engagement face (A).
5. the end seal structure of main reducing gear of drive axle according to claim 4 is characterized in that, described seepage-proof oil sealant layer is the threaded locking sealing gum layer.
6. the end seal structure of main reducing gear of drive axle according to claim 1 is characterized in that, described oil sealing (5) is two outside framework oil seals along the axial arranging of described axle (3).
7. the end seal structure of main reducing gear of drive axle according to claim 1, it is characterized in that, be spline joint between described flange (4) and the described axle (3), this flange (4) is locked by the nut (8) on the outer axle journal (31) that is installed in described axle (3), wherein, be coated with the plane sealing glue-line at the spline joint place of the shaft shoulder section (32) of described outer axle journal (31).
8. the end seal structure of the described main reducing gear of drive axle of any one according to claim 1-7, it is characterized in that, also be formed with the second sealing engagement face (B) between described end housing (1) and the described oil sealing base (6), be provided with seal ring (7) in this second sealing engagement face (B).
9. the end seal structure of main reducing gear of drive axle according to claim 8, it is characterized in that, described oil sealing base (6) is formed be used to the inner groovy that described seal ring (7) are installed (61) at described the second sealing engagement face (B), described end housing (1) is upper to be formed with stepped part (11) between described the first sealing engagement face (A) and described the second sealing engagement face (B), the edge of this stepped part (11) is formed with chamfering (12).
10. the end seal structure of main reducing gear of drive axle according to claim 8 is characterized in that, described seal ring (7) is " O " RunddichtringO, rubbery flat gasket or star-like seal ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220450475.7U CN202768793U (en) | 2012-09-05 | 2012-09-05 | End portion sealing structure of drive axle main reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220450475.7U CN202768793U (en) | 2012-09-05 | 2012-09-05 | End portion sealing structure of drive axle main reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202768793U true CN202768793U (en) | 2013-03-06 |
Family
ID=47775369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220450475.7U Expired - Lifetime CN202768793U (en) | 2012-09-05 | 2012-09-05 | End portion sealing structure of drive axle main reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202768793U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103727214A (en) * | 2013-11-25 | 2014-04-16 | 无锡京华重工装备制造有限公司 | Sealing structure of output shaft portion of feeding box |
| CN106969134A (en) * | 2017-04-17 | 2017-07-21 | 中国第汽车股份有限公司 | Jackshaft input end bearing positioning pretension adjustment and sealing structure |
| CN108105370A (en) * | 2018-01-10 | 2018-06-01 | 东风商用车有限公司 | A kind of output shaft of gear-box end seal structure |
| CN109826939A (en) * | 2019-03-26 | 2019-05-31 | 一汽解放汽车有限公司 | A kind of bearing regulating device and its assembly method for jackshaft speed reducer assembly |
-
2012
- 2012-09-05 CN CN201220450475.7U patent/CN202768793U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103727214A (en) * | 2013-11-25 | 2014-04-16 | 无锡京华重工装备制造有限公司 | Sealing structure of output shaft portion of feeding box |
| CN103727214B (en) * | 2013-11-25 | 2016-03-16 | 无锡京华重工装备制造有限公司 | A kind of sealing configuration of feed box output shaft place |
| CN106969134A (en) * | 2017-04-17 | 2017-07-21 | 中国第汽车股份有限公司 | Jackshaft input end bearing positioning pretension adjustment and sealing structure |
| CN108105370A (en) * | 2018-01-10 | 2018-06-01 | 东风商用车有限公司 | A kind of output shaft of gear-box end seal structure |
| CN109826939A (en) * | 2019-03-26 | 2019-05-31 | 一汽解放汽车有限公司 | A kind of bearing regulating device and its assembly method for jackshaft speed reducer assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130306 |
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| CX01 | Expiry of patent term |