CN207864592U - Sealing structure for retarder transmission axle shaft end - Google Patents
Sealing structure for retarder transmission axle shaft end Download PDFInfo
- Publication number
- CN207864592U CN207864592U CN201721899015.1U CN201721899015U CN207864592U CN 207864592 U CN207864592 U CN 207864592U CN 201721899015 U CN201721899015 U CN 201721899015U CN 207864592 U CN207864592 U CN 207864592U
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- CN
- China
- Prior art keywords
- transmission axle
- sealing ring
- retarder
- sealing
- shaft end
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The utility model discloses a kind of sealing structures for retarder transmission axle shaft end, transmission axle is mounted on by bearing on the bearing block of retarder, sealing structure includes sealing ring, sealing ring is mounted on the shaft end of transmission axle and the inner and outer ring of sealing ring is close to transmission axle and bearing block respectively, sealing ring keeps off oil groove in the inside and outside spiral that offers, sealing structure further includes the first back oil road, and the first back oil road is connected on the inside of sealing ring and across bearing block with the fuel tank of retarder.The sealing structure has the advantages that reliability is high, maintenance cost is low, can prevent oil seepage.
Description
Technical field
The utility model relates generally to the shaft end seal technology of retarder transmission axle, more particularly to a kind of for retarder biography
The sealing structure of defeated axis shaft end.
Background technology
Retarder input, the sealing of output shaft generally use packing seal structure, such as packing padding sealing structure, the structure
It is staggered installation using two graphite mould packings, and with adjusting pressing device.In use, packing play in order to prevent, it should be appropriate
Compress packing.But since the sealing structure is without using special cooling device, if compressing packing, can cause abnormal at sealing
Wen Sheng（Temperature can reach 160 DEG C or more at this）, and cause packing accelerated wear test；If do not compressed, packing meeting radial-play, quickly
Two packing interface overlappings are caused, and are most easily stopped in lower section（Resistance is maximum herein）, generation oil sealing is not tight, makes oil easily from interface
Place leaks out.
Utility model content
The technical problems to be solved in the utility model is to overcome the deficiencies of the prior art and provide that a kind of reliability is high, safeguards
The sealing structure for retarder transmission axle shaft end at low cost, that oil seepage can be prevented.
In order to solve the above technical problems, the utility model uses following technical scheme：
A kind of sealing structure for retarder transmission axle shaft end, the transmission axle are mounted on the axis of retarder by bearing
In bearing, the sealing structure includes sealing ring, and the sealing ring is mounted on the inner and outer ring point of the shaft end of transmission axle and sealing ring
Other and transmission axle and bearing block are close to, and the sealing ring keeps off oil groove in the inside and outside spiral that offers, and the sealing structure further includes
First back oil road, first back oil road are connected on the inside of sealing ring and across bearing block with the fuel tank of retarder.
As a further improvement of the above technical scheme：
Further include capping and the second back oil road, the capping is placed on the transmission axle of sealing ring rear end and is fastened with bearing block
Connection, second back oil road is arranged between capping and sealing ring rear end and the second back oil road passes through bearing block and first time
Oil duct is connected to.
The capping rear end is installed with the dust excluding plate for preventing foreign from entering the second back oil road.
It is equipped with the first gasket between the capping and bearing block.
The second gasket is equipped between the dust excluding plate and capping.
Compared with prior art, the utility model has the advantage of：
The sealing structure for retarder transmission axle shaft end of the utility model, transmission axle are mounted on retarder by bearing
Bearing block on, sealing structure includes sealing ring, and sealing ring is mounted on the shaft end of transmission axle and the outer shroud and bearing block of sealing ring
It is close to, sealing ring keeps off oil groove in the inside and outside spiral that offers, and sealing structure further includes the first back oil road, and the first back oil road is close to sealing
Circle inside is simultaneously connected to across bearing block with the fuel tank of retarder.In the structure, there are between small for the inner ring of sealing ring and transmission axle
Gap, i.e. sealing ring form a kind of non-contacting seal with transmission axle, and the spiral that oil groove is kept off by spiral catches up with oily principle so that oily energy
First back oil road is back to by spiral gear oil groove gear, fuel tank is back to by the first back oil road.The structure uses sealing ring and transmission
The non-contacting seal form of axis so that sealing ring not will produce abrasion and fever phenomenon, improve the use reliability of product,
Greatly reduce working service cost；And it catches up with oil and oil return that can solve oil by spiral gear oil groove and the cooperation of the first back oil road to ooze
Leakage problem.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model.
Each label indicates in figure：
1, transmission axle；2, bearing；3, bearing block；4, sealing ring；41, spiral keeps off oil groove；5, the first back oil road；6, fuel tank；
7, it covers；8, the second back oil road；9, dust excluding plate；10, the first gasket；11, the second gasket.
Specific implementation mode
The utility model is described in further details below with reference to Figure of description and specific embodiment.
As shown in Figure 1, a kind of embodiment of the utility model for the sealing structure of retarder transmission axle shaft end, transmission axle
1 is mounted on by bearing 2 on the bearing block 3 of retarder, and sealing structure includes sealing ring 4, and sealing ring 4 is mounted on transmission axle 1
The outer shroud of shaft end and sealing ring 4 is close to bearing block 3, and sealing ring 4 keeps off oil groove 41 in the inside and outside spiral that offers, and sealing structure is also
Including the first back oil road 5, the first back oil road 5 with the fuel tank 6 of retarder is connected to close to 4 inside of sealing ring and across bearing block 3.It should
In structure, with transmission axle 1 there are minim gap, i.e. sealing ring 4 is formed a kind of contactless the inner ring of sealing ring 4 with transmission axle 1
Sealing, the spiral that oil groove 41 is kept off by spiral catch up with oily principle so that and oil can be kept off the gear of oil groove 41 by spiral and be back to the first back oil road 5,
Fuel tank 6 is back to by the first back oil road 5.The structure uses the non-contacting seal form of sealing ring 4 and transmission axle 1 so that
Sealing ring 4 not will produce abrasion and fever phenomenon, improve the use reliability of product, greatly reduce working service cost；
And oil groove 41 is kept off by spiral and the cooperation of the first back oil road 5 catches up with oil and oil return that can solve the problems, such as oil seepage.
Further include capping 7 and the second back oil road 8 in the present embodiment, capping 7 is placed on the transmission axle 1 of 4 rear end of sealing ring simultaneously
It is fastenedly connected with bearing block 3, the setting of the second back oil road 8 is between capping 7 and 4 rear end of sealing ring and the second back oil road 8 passes through axis
Bearing 3 is connected to the first back oil road 5.In the structure, the effect of top tight sealing circle 4 is played in capping 7, and the second back oil road 8 is one
Kind labyrinth structure so that even if there is slight oil seepage that can be also back in the first back oil road 5 from the second back oil road 8, structure
Simply, ingenious in design, it can thoroughly solve the problems, such as oil seepage.
In the present embodiment, capping 7 and sealing ring 4 are an integral structure, and the second back oil road 8 is opened on the integral structure simultaneously
It is connected to the first back oil road 5, the larger collection chamber in one space is set in 8 initial bit of the second back oil road, storage can be collected and slowed down
Device is under Adverse attitude（Trim/pitching ± 5 °/± 10 °）The oil of spilling, makes it not reveal.
In the present embodiment, 7 rear ends of capping are installed with the dust excluding plate 9 for preventing foreign from entering the second back oil road 8.It should
Dust excluding plate 9 can prevent the foreign matters such as dust from entering the second back oil road 8, ensure that oil.
In the present embodiment, the first gasket 10 is equipped between capping 7 and bearing block 3.First gasket 10 further carries
High sealing performance between capping 7 and bearing block 3.
In the present embodiment, the second gasket 11 is equipped between dust excluding plate 9 and capping 7.Second gasket 11 further carries
High sealing performance between dust excluding plate 9 and capping 7.
Although the utility model is disclosed as above with preferred embodiment, it is not limited to the utility model.It is any
Those skilled in the art, in the case where not departing from technical solutions of the utility model range, all using the disclosure above
Technology contents many possible changes and modifications are made to technical solutions of the utility model, or be revised as the equivalent of equivalent variations
Embodiment.Therefore, every content without departing from technical solutions of the utility model, according to the utility model technical spirit to above real
Any simple modifications, equivalents, and modifications that example is done are applied, should all be fallen in the range of technical solutions of the utility model are protected.
Claims (5)
1. a kind of sealing structure for retarder transmission axle shaft end, the transmission axle（1）Pass through bearing（2）Mounted on retarder
Bearing block（3）On, it is characterised in that：The sealing structure includes sealing ring（4）, the sealing ring（4）Mounted on transmission axle
（1）Shaft end and sealing ring（4）Outer shroud and bearing block（3）It is close to, the sealing ring（4）Spiral gear oil is offered in inside and outside
Slot（41）, the sealing structure further includes the first back oil road（5）, first back oil road（5）Close to sealing ring（4）It simultaneously wears inside
Cross bearing block（3）With the fuel tank of retarder（6）Connection.
2. the sealing structure according to claim 1 for retarder transmission axle shaft end, it is characterised in that：It further include capping
（7）With the second back oil road（8）, the capping（7）It is placed on sealing ring（4）The transmission axle of rear end（1）Upper and and bearing block（3）Fastening
Connection, second back oil road（8）Setting is covering（7）And sealing ring（4）Between rear end and the second back oil road（8）Across axis
Bearing（3）With the first back oil road（5）Connection.
3. the sealing structure according to claim 2 for retarder transmission axle shaft end, it is characterised in that：The capping
（7）Rear end is installed with for preventing foreign from entering the second back oil road（8）Dust excluding plate（9）.
4. the sealing structure according to claim 3 for retarder transmission axle shaft end, it is characterised in that：The capping
（7）With bearing block（3）Between be equipped with the first gasket（10）.
5. the sealing structure according to claim 3 or 4 for retarder transmission axle shaft end, it is characterised in that：It is described anti-
Dirt plate（9）With capping（7）Between be equipped with the second gasket（11）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721899015.1U CN207864592U (en) | 2017-12-29 | 2017-12-29 | Sealing structure for retarder transmission axle shaft end |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721899015.1U CN207864592U (en) | 2017-12-29 | 2017-12-29 | Sealing structure for retarder transmission axle shaft end |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207864592U true CN207864592U (en) | 2018-09-14 |
Family
ID=63463976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721899015.1U Active CN207864592U (en) | 2017-12-29 | 2017-12-29 | Sealing structure for retarder transmission axle shaft end |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207864592U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108105369A (en) * | 2017-12-29 | 2018-06-01 | 中国航发中传机械有限公司 | For the sealing structure of retarder transmission axle shaft end |
-
2017
- 2017-12-29 CN CN201721899015.1U patent/CN207864592U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108105369A (en) * | 2017-12-29 | 2018-06-01 | 中国航发中传机械有限公司 | For the sealing structure of retarder transmission axle shaft end |
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