CN107869570A - Gear-box shaft end dynamic sealing device - Google Patents
Gear-box shaft end dynamic sealing device Download PDFInfo
- Publication number
- CN107869570A CN107869570A CN201711103940.3A CN201711103940A CN107869570A CN 107869570 A CN107869570 A CN 107869570A CN 201711103940 A CN201711103940 A CN 201711103940A CN 107869570 A CN107869570 A CN 107869570A
- Authority
- CN
- China
- Prior art keywords
- transparent cover
- oil
- gap
- axle
- annular groove
- Prior art date
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/029—Gearboxes; Mounting gearing therein characterised by means for sealing the gearboxes, e.g. to improve airtightness
Abstract
The present invention discloses a kind of gear-box shaft end dynamic sealing device, including oil scraper ring, the axle for passing through gear-box transparent cover, and the sealing between axle and transparent cover, and mechanical seal and brush seal are sealed between axle and transparent cover, and oil scraper ring is positioned by the shoulder block on axle, wherein：Mechanical seal is that gap is bored in the one section of axial step type convergence formed after being combined by oil scraper ring with the transparent cover matched and one section of radial direction is got rid of oil-gap and merged, axial step type convergence cone at least contains two-stage ladder in gap, oil gas expansion annular groove is provided between adjacent steps, the hydraulic fluid port that gets rid of after the bending of oil-gap end is radially got rid of and points to transparent cover；The transparent cover of corresponding mechanical seal outboard end is provided with annular groove, and brush seal is embedded in annular groove, and the bristle of brush seal touches axle and forms band；Transparent cover on the outside of corresponding brush seal is provided with oil resistance annular groove, and oil resistance annular groove minimum point is provided with drainback passage, and drainback passage is linked up with the main drainback passage in casing.
Description
Technical field
The present invention relates to a kind of sealing device, especially a kind of gear-box shaft end dynamic sealing device, belong to mechanical field.
Background technology
It is the major measure for preventing oil leak in gear-box that sealing device is set on the input and output shaft of gear-box
One of, currently used sealing is generally oil sealing or labyrinth sealing, wherein oil sealing because directly being contacted with axle, its wearability
Index and corrosion resistance all propose higher technical requirements to material, and its service life is far below labyrinth sealing.It is general more
For low speed small power gear-box.
Chinese patent 201220059091.2 discloses a kind of labyrinth sealing, and it employs three and does not wait deep rectangular teeth
Labyrinth channel, and oil-recovery tank is opened up at passage 2 and 3, make to leak into fluid in passage and flow back to casing.Although the present invention improves
Oil return effect, it is compared with oil sealing, its service life length, and the requirement to material is also harsh not as oil sealing.But due to fan
There is larger path clearance in the sealing of palace formula, its axial resistance is smaller, fast chamber at a high speed mist of oil caused by rotation be easy to from
Overflowed in this gap.
Chinese patent 201320088426.8 is the improvement on the basis of above-mentioned No. 201220059091.2 patents, more than the latter
Two labyrinth channels are opened up, and oil-recovery tank is opened up on five passages.Although the present invention can lift and improve sealing effect
Fruit, but the axial resistance of seal clearance is still smaller, still can not prevent mist of oil caused by fast chamber high speed rotation from sealing
It is excessive in gap.
How properly settling the lubricating oil of gear-box, by input and output shaft seepage to be that this area is in the urgent need to address ask
Topic.
The content of the invention
It is an object of the present invention to it is directed to such as oil sealing service life and fan existing for current gearbox shaft end sealing device
A kind of a series of problems, such as palace formula sealing still results in mist of oil seepage, there is provided new gear-box shaft end dynamic sealing device.
The object of the present invention is achieved like this：A kind of gear-box shaft end dynamic sealing device, including oil scraper ring, pass through gear
The axle of case transparent cover, and the sealing between axle and transparent cover, it is characterised in that being sealed between described axle and transparent cover is mechanical close
Envelope and brush seal, oil scraper ring are positioned by the shoulder block on axle, wherein：
Mechanical seal is the one section of axial step type convergence cone gap and one section formed after being combined by oil scraper ring with the transparent cover matched
Radially get rid of oil-gap to merge, axial step type convergence cone at least contains two-stage ladder in gap, is provided between adjacent steps
Oil gas expands annular groove, radially gets rid of the hydraulic fluid port that gets rid of after the bending of oil-gap end and points to transparent cover；
The transparent cover of corresponding mechanical seal outboard end is provided with annular groove, brush seal inlay with annular groove, the bristle of brush seal
Touch axle and form band；
Transparent cover on the outside of corresponding brush seal is provided with oil resistance annular groove, and oil resistance annular groove is linked up with collection chamber, and collection chamber minimum point is set
There is drainback passage, drainback passage is linked up with the main drainback passage in casing.
In the present invention, described oil scraper ring interference is mounted on an axle, spacing by shoulder block, while passes through key axially position.
In the present invention, it is one section of roundabout gap of turning back radially to get rid of oil-gap end, and the hydraulic fluid port that gets rid of in roundabout gap of turning back refers to
To transparent cover；The angle of ladder type convergence cone gap and axle is 30 ° -60 °.
In the present invention, the hydraulic fluid port sensing transparent cover of getting rid of after the 90-degree bent of oil-gap end is radially got rid of to refer to：Radially get rid of oil-gap
Halfway 1 ° -180 ° it is roundabout, latter end with starting centrifugal direction be in 90 °, get rid of hydraulic fluid port point to transparent cover.In the present invention, described transparent cover
Be two-piece unit structure with brush seal, after brush seal insertion annular groove, the transparent cover of two-piece unit by after circular cone finger setting by
Connecting bolt is solidified as a whole, and transparent cover is connected by the bolt on periphery with casing.
In the present invention, the transparent cover surface combined with casing and the transparent cover surface on drainback passage periphery are equipped with O-shaped close
Seal.
The advantage of the invention is that：Because the present invention is using mechanical seal and brush seal combining form, to passing through
Frictional resistance caused by the axle of transparent cover is smaller, and sealed medium leak resistance is significantly increased and kept off oily and oil-collecting ability and carry
Height, sealing property is set greatly to improve.Because mechanical seal is one section of axial direction being formed after being combined by oil scraper ring with the transparent cover matched
Step type convergence cone gap and one section of radial direction are got rid of oil-gap and merged, and axial step type convergence cone at least contains two-stage in gap
Ladder, oil gas expansion annular groove is provided between adjacent steps, the hydraulic fluid port bending of getting rid of for radially getting rid of oil-gap end subsequently points to transparent cover, therefore
Can be in wider PV values（Sealed medium pressure P and linear velocity V product）In the range of apply.Because brush seal has
There is stronger aerosol adsorption capacity, can be used for sealing gas or mist of oil；Because transparent cover and brush seal use dissection type knot
Structure, it is easily installed and dismantles.O-ring seal can prevent lubricating oil from transparent cover and casing faying face seepage.Structure of the present invention is tight
Gather, it is easy to maintenance.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of the present invention
Fig. 2 is the close-up schematic view of A in Fig. 1.
Fig. 3-Fig. 5 is the structural representation of several mechanical seal embodiments of the present invention.
Fig. 6 is the close-up schematic view of B in Fig. 1.
Fig. 7 is the structural representation of split transparent cover of the present invention.
In figure：1st, bolt, 2, transparent cover, 3, oil scraper ring, 4, brush seal, 5, key, 6, axle, 7, O-ring, 8, drainback passage,
9th, casing, 10, oil resistance annular groove, 11, main drainback passage, 12, radially get rid of oil-gap, 13, axial step type convergence cone gap, 14,
Oil gas expands annular groove, and 15, collect mist of oil chamber, 16, Micro blazed-grating chamber, 17, taper bolt, 18, connecting bolt, 19, collection chamber.
Embodiment
The nonrestrictive concrete structure for disclosing the embodiment of the present invention of accompanying drawing, makees to the present invention into one below in conjunction with the accompanying drawings
The description of step.
As seen from Figure 1, the present invention includes oil scraper ring 3, passes through the axle 6 of gear-box transparent cover 2, and between axle 6 and transparent cover 2
Sealing, is sealed into mechanical seal and brush seal 4, oil scraper ring 3 is determined by the shoulder block on axle 6 between described axle 6 and transparent cover 2
Position, mechanical seal are formed after being combined by oil scraper ring 3 with the transparent cover 2 matched.Brush seal 4 is located on the outside of mechanical seal, brush
The bristle of sealing 4 touches axle 6 and forms band.The transparent cover 2 in the corresponding outside of brush seal 4 is provided with oil resistance annular groove 10, oil blocking ring
Groove 10 is linked up with collection chamber 19, and the minimum point of collection chamber 19 is provided with drainback passage 8, drainback passage 8 and the main drainback passage in casing 9
11 link up.The surface of transparent cover 2 combined with casing 9 and the surface of transparent cover 2 on the periphery of drainback passage 8 are equipped with O-ring seal 7.
In the present embodiment, the described interference of oil scraper ring 3 is arranged on axle 6, spacing by shoulder block, while is realized by key 5
Axially position.
From Figure 2 it can be seen that mechanical seal is the one section of axial step type formed after being combined by oil scraper ring 3 with the transparent cover 2 matched
Convergence cone gap 13 and one section of radial direction are got rid of oil-gap 12 and merged, and axial step type convergence cone at least contains two-stage in gap 13
Ladder, oil gas expansion chamber 14 is provided between adjacent steps, radially get rid of the hydraulic fluid port that gets rid of after the bending of the end of oil-gap 12 and point to transparent cover 2,；
The angle of ladder type convergence cone gap and axle is 30 ° -60 °.
When it is implemented, it is one section of roundabout gap of turning back radially to get rid of the end of oil-gap 12, Fig. 3 is radially to get rid of in oil-gap 12
Way can between 1 ° -180 ° roundabout bending, finally realize that latter end with starting centrifugal direction is in 90 °, gets rid of hydraulic fluid port and points to transparent cover 2
Several example structure schematic diagrams, either Fig. 3 or Fig. 4 or the embodiment shown in Fig. 5, what they turned back roundabout gap gets rid of oil
Mouthful all referring to transparent cover 2.
As seen from Figure 6, transparent cover 2 is provided with annular groove, and brush seal 4 is inlayed and in annular groove, the bristle of brush seal 4 touches axle
6 form band.In figure, the inner side of brush seal 4（Figure left side）To collect mist of oil chamber 15, outside（Figure right side）For micro- permeation chamber
16。
As seen from Figure 7, described transparent cover 2（Including brush seal 4）For two-piece unit structure, during assembling, brush seal 4 is embedding
After entering annular groove, the transparent cover 2 of two-piece unit is solidified as a whole after being positioned by taper bolt 17 by connecting bolt 18, and transparent cover 2 passes through periphery again
Bolt 1 be connected with casing 9.
The present invention the course of work be：The lubricating oil or mist of oil leaked out from bearing or bush gap enters collection chamber
19, big portion's lubricating oil meeting excessively main drainback passage 11 of lease making returns to casing 9, the resistance that a part is formed by oil scraper ring 3 with transparent cover 2
Oil ring groove 10 is blocked in collection chamber 19, and this parts of lubricating oil will be flowed in casing 9 by main drainback passage 11.
In gear-box running, have small portion's lubricating oil and form mist of oil, they are easy to can be by getting rid of oil-gap 12
Cone gap 13 is restrained with step type enter collect mist of oil chamber 15, it is several into collecting the mist of oil of mist of oil chamber 15 by brush seal 4 and stopping
There is no leakage, but after a period of time is run, mist of oil is condensed into lubricating oil collecting again in mist of oil chamber 15, and through brush
Micro gap between formula sealing 4 and axle 6 penetrates into Micro blazed-grating chamber 16, and this parts of lubricating oil fluid enters oil resistance annular groove 10 and returns to collection
Oil pocket 19, main drainback passage 11 is flowed to by drainback passage 8, eventually flowed in casing 9.Realize the lubricating oil after being condensed to mist of oil
Recovery.
To together entering axial step type convergence cone gap 13 with mist of oil and radially getting rid of the bulky grain elaioleucite in oil-gap 12
It can adsorb on the wall of oil scraper ring 3, due to the centrifugal action of oil scraper ring 3, the lubricating oil on the wall of oil scraper ring 3 can be pushed back again
Collection chamber 19, then returned by main drainback passage 11 in casing 9.
Claims (6)
1. a kind of gear-box shaft end dynamic sealing device, including oil scraper ring, the axle for passing through gear-box transparent cover, and between axle and transparent cover
Sealing, it is characterised in that be sealed into mechanical seal and brush seal between described axle and transparent cover, oil scraper ring is by axle
Shoulder block positions, wherein：
Mechanical seal is the one section of axial step type convergence cone gap and one section formed after being combined by oil scraper ring with the transparent cover matched
Radially get rid of oil-gap to merge, axial step type convergence cone at least contains two-stage ladder in gap, is provided between adjacent steps
Oil gas expands annular groove, radially gets rid of the hydraulic fluid port that gets rid of after the 90-degree bent of oil-gap end and points to transparent cover；
The transparent cover of corresponding mechanical seal outboard end is provided with annular groove, brush seal inlay with annular groove, the bristle of brush seal
Touch axle and form band；
Transparent cover on the outside of corresponding brush seal is provided with oil resistance annular groove, and oil resistance annular groove is linked up with collection chamber, and collection chamber minimum point is set
There is drainback passage, drainback passage is linked up with the main drainback passage in casing.
2. gear-box shaft end according to claim 1 dynamic sealing device, it is characterised in that described oil scraper ring interference installation
It is spacing by shoulder block on axle, while pass through key axially position.
3. gear-box shaft end according to claim 1 dynamic sealing device, it is characterised in that radially get rid of oil-gap end as one
Section is turned back roundabout gap, and the hydraulic fluid port that gets rid of in roundabout gap of turning back points to transparent cover；The angle of ladder type convergence cone gap and axle is 30 °-
60°。
4. gear-box shaft end according to claim 3 dynamic sealing device, it is characterised in that radially get rid of the bending of oil-gap end
Hydraulic fluid port sensing transparent cover of getting rid of after 90 ° refers to：It is roundabout radially to get rid of 1 ° -180 ° of oil-gap midway, latter end is in starting centrifugal direction
90 °, get rid of hydraulic fluid port and point to transparent cover.
5. the gear-box shaft end dynamic sealing device according to one of claim 1-4, it is characterised in that described transparent cover and brush
Formula sealing is two-piece unit structure, after brush seal insertion annular groove, the transparent cover of two-piece unit by after circular cone finger setting again by even
Connecting bolt is solidified as a whole, and last transparent cover is connected by the bolt on periphery with casing.
6. gear-box shaft end according to claim 5 dynamic sealing device, it is characterised in that the transparent cover surface combined with casing
And the transparent cover surface on drainback passage periphery is equipped with O-ring seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711103940.3A CN107869570A (en) | 2017-11-10 | 2017-11-10 | Gear-box shaft end dynamic sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711103940.3A CN107869570A (en) | 2017-11-10 | 2017-11-10 | Gear-box shaft end dynamic sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107869570A true CN107869570A (en) | 2018-04-03 |
Family
ID=61753733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711103940.3A Pending CN107869570A (en) | 2017-11-10 | 2017-11-10 | Gear-box shaft end dynamic sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107869570A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108716535A (en) * | 2018-07-17 | 2018-10-30 | 安徽南方化工泵业有限公司 | A kind of contactless mechanical seal structure |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6131910A (en) * | 1992-11-19 | 2000-10-17 | General Electric Co. | Brush seals and combined labyrinth and brush seals for rotary machines |
| US6331006B1 (en) * | 2000-01-25 | 2001-12-18 | General Electric Company | Brush seal mounting in supporting groove using flat spring with bifurcated end |
| US20020074730A1 (en) * | 2000-12-15 | 2002-06-20 | Mayer Robert Russell | Brush seal for a bearing cavity |
| CN201636326U (en) * | 2010-04-06 | 2010-11-17 | 江苏省金象减速机有限公司 | Centrifugal lossless sealing structure |
| CN102094845A (en) * | 2011-03-07 | 2011-06-15 | 江苏金通灵风机股份有限公司 | Shaft seal device of air compressor |
| CN202768791U (en) * | 2012-06-21 | 2013-03-06 | 南京金鑫传动设备有限公司 | Combined sealing device for shaft end of speed reducer |
| CN103161963A (en) * | 2013-03-18 | 2013-06-19 | 南车戚墅堰机车车辆工艺研究所有限公司 | Output shaft sealing device |
| CN203189736U (en) * | 2013-03-18 | 2013-09-11 | 南车戚墅堰机车车辆工艺研究所有限公司 | Output shaft sealing device |
| CN203214888U (en) * | 2013-04-24 | 2013-09-25 | 太原重工股份有限公司 | Seal device for reducer rotation shaft combination |
| CN204372163U (en) * | 2014-12-20 | 2015-06-03 | 戴宏亮 | Screw machine seal arrangement |
| CN205639568U (en) * | 2016-04-07 | 2016-10-12 | 北京康为重工机械制造有限公司 | Input axle head seal structure , high -speed gear box and use its rail vehicle |
| CN207621311U (en) * | 2017-11-10 | 2018-07-17 | 南京高精齿轮集团有限公司 | Gear-box shaft end dynamic sealing device |
-
2017
- 2017-11-10 CN CN201711103940.3A patent/CN107869570A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6131910A (en) * | 1992-11-19 | 2000-10-17 | General Electric Co. | Brush seals and combined labyrinth and brush seals for rotary machines |
| US6331006B1 (en) * | 2000-01-25 | 2001-12-18 | General Electric Company | Brush seal mounting in supporting groove using flat spring with bifurcated end |
| US20020074730A1 (en) * | 2000-12-15 | 2002-06-20 | Mayer Robert Russell | Brush seal for a bearing cavity |
| CN201636326U (en) * | 2010-04-06 | 2010-11-17 | 江苏省金象减速机有限公司 | Centrifugal lossless sealing structure |
| CN102094845A (en) * | 2011-03-07 | 2011-06-15 | 江苏金通灵风机股份有限公司 | Shaft seal device of air compressor |
| CN202768791U (en) * | 2012-06-21 | 2013-03-06 | 南京金鑫传动设备有限公司 | Combined sealing device for shaft end of speed reducer |
| CN103161963A (en) * | 2013-03-18 | 2013-06-19 | 南车戚墅堰机车车辆工艺研究所有限公司 | Output shaft sealing device |
| CN203189736U (en) * | 2013-03-18 | 2013-09-11 | 南车戚墅堰机车车辆工艺研究所有限公司 | Output shaft sealing device |
| CN203214888U (en) * | 2013-04-24 | 2013-09-25 | 太原重工股份有限公司 | Seal device for reducer rotation shaft combination |
| CN204372163U (en) * | 2014-12-20 | 2015-06-03 | 戴宏亮 | Screw machine seal arrangement |
| CN205639568U (en) * | 2016-04-07 | 2016-10-12 | 北京康为重工机械制造有限公司 | Input axle head seal structure , high -speed gear box and use its rail vehicle |
| CN207621311U (en) * | 2017-11-10 | 2018-07-17 | 南京高精齿轮集团有限公司 | Gear-box shaft end dynamic sealing device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108716535A (en) * | 2018-07-17 | 2018-10-30 | 安徽南方化工泵业有限公司 | A kind of contactless mechanical seal structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20190925 Address after: 210012 Yuhuatai No. 3, Nanjing, Jiangsu Province Applicant after: Nanjing High Precision Gear Group Co., Ltd. Applicant after: Nanjing High Precision Transmission Equipment Manufacturing Group Co., Ltd. Address before: 210012 Yuhuatai No. 3, Nanjing, Jiangsu Province Applicant before: Nanjing High Precision Gear Group Co., Ltd. |
|
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20200511 Address after: 210012 Yuhuatai No. 3, Nanjing, Jiangsu Province Applicant after: NANJING HIGH-SPEED & ACCURATE GEAR GROUP Co.,Ltd. Address before: 210012 Yuhuatai No. 3, Nanjing, Jiangsu Province Applicant before: NANJING HIGH-SPEED & ACCURATE GEAR GROUP Co.,Ltd. Applicant before: Nanjing High Precision Transmission Equipment Manufacturing Group Co., Ltd. |