CN106641204A - Gearbox shaft end staggered tooth type combined labyrinth seal - Google Patents
Gearbox shaft end staggered tooth type combined labyrinth seal Download PDFInfo
- Publication number
- CN106641204A CN106641204A CN201611268675.XA CN201611268675A CN106641204A CN 106641204 A CN106641204 A CN 106641204A CN 201611268675 A CN201611268675 A CN 201611268675A CN 106641204 A CN106641204 A CN 106641204A
- Authority
- CN
- China
- Prior art keywords
- seal
- axial
- seal part
- labyrinth seal
- shaft end
- 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
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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
-
- 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
- F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
- Sealing Devices (AREA)
Abstract
The invention discloses a gearbox shaft end staggered tooth type combined labyrinth seal. The labyrinth seal comprises an axial seal part and a combined seal part which are attached to an inner ring and an outer ring of a bearing respectively, and seal teeth axially distributed in a staggered mode are arranged on the opposite circumferential faces of the axial seal part and the combined seal part respectively; a radial seal part is fixed to the end face of the combined seal part, and seal teeth arranged in a staggered mode are arranged on the end face of the axial seal part and the opposite face of the axial seal part respectively; after the combined seal part, the axial seal part and the radial seal part are combined, and axial and radial combined seal structures are formed in spaces between the combined seal part, the axial seal part and the radial seal part respectively. Fluid collides with the teeth to form eddies, the flowing speed is reduced to zero approximately, and kinetic energy is completely converted into thermal energy. Kinetic energy generated in gaps can be completely converted into thermal energy through ideal cavities instead of being recovered to pressure potential energy. When the fluid passes through each gap and cavity, the process is continuously executed repeatedly until pressure of the fluid in the last cavity is consistent with outside pressure, and the fluid does not leak any more.
Description
Technical field
The present invention relates to a kind of gear-box shaft end bayonet-type joint labyrinth seal, is related to the traction drive of bullet train
High power gearbox oil lubrication labyrinth seal mode.It is related to Patent classificating number F04 fluid varactor machines；Liquid pump or
Elastic fluid pump F04D non-varactor pump F04D29/00 parts, part or adnexa F04D29/08 sealing.
Background technology
Briefly, labyrinth seal is that the artificial multiple fluid leakages that can weaken of position setting easily leaked in fluid become
The tooth or groove of gesture, acts on convection cell with the energy consumption of cavity by the throttling action in gap and applies resistance, that is, prevent fluid leakage.
The sealing principle of labyrinth seal is that concavo-convex step is processed in rotating shaft or axle sleeve, and sealing ring is processed as thin profile of tooth.Tooth
Interlock with boss corresponding, each tooth top forms narrow radial clearance, forms toroidal cavity between each two sealing tooth.So,
Labyrinth seal passage is just made up of with expansion cavity the throttle clearance that many is arranged in order, and they force flow of fluid to become tortuous
It is changeable, throttling and thermomechanical effect are produced, one gap forms primary seal with a cavity, adds and multi-stage sealed reaches sealing
Effect.
The content of the invention
In order to solve above-mentioned technical problem, a kind of gear-box shaft end bayonet-type joint labyrinth seal disclosed by the invention, bag
Include：The axial seal fitted with bearing inner race and outer ring respectively and combine sealing member；
The relative periphery of the axial seal and joint sealing member is respectively equipped with the sealing tooth of axially staggered distribution；
The end face of the joint sealing member is fixed with a radial seal, the end face of the axial seal and radial seal
The relative face of part is respectively equipped with the sealing tooth being crisscross arranged；
After combination, joint sealing member, the space between axial seal and radial seal, formed comprising axially respectively and
The joint sealing structure of radial direction.
Used as preferred embodiment, described gear-box shaft end bayonet-type joint labyrinth seal is further characterized in that institute
The sealing tooth stated is straight-tooth and helical teeth.
Further, described gear-box shaft end bayonet-type joint labyrinth seal, is further characterized in that described axial direction
It is straight-tooth that tooth is sealed in labyrinth seal structure；It is helical teeth that tooth is sealed in radial labyrinth sealing structure.
Further, the helical teeth is upper helical teeth windward.
Further, as preferably embodiment, the angle of described upper helical teeth windward is 70 °～90 °.
Further, as preferably embodiment, the outer ledge of the described inwall for combining sealing member is provided with work
For the extension of the first sealing tooth in the radial labyrinth sealing structure；
The extension cooperatively form with the outer wall of described axial seal connect the axial labyrinth seal structure and
The crack of radial labyrinth sealing structure.
As preferred embodiment, the side of described axial seal and joint sealing member and the contact surface of bearing touch
There is sinking edge I and sinking edge II respectively；Under assembled state, sinking edge I and sinking edge II, relative formation cover axle
Hold the groove in space between Internal and external cycle.
Used as preferred embodiment, described radial seal is the covering axial seal and joint sealing member end
The closure in face；Radial seal is fixed by the bolt of a connection axial seal.
Description of the drawings
For clearer explanation embodiments of the invention or the technical scheme of prior art, below will be to embodiment or existing
Accompanying drawing to be used needed for having technology description does one and simply introduces, it should be apparent that, drawings in the following description are only
Some embodiments of the present invention, for those of ordinary skill in the art, on the premise of not paying creative work, may be used also
To obtain other accompanying drawings according to these accompanying drawings.
Fig. 1 is the generalized section of assembled state of the present invention
Fig. 2 is the generalized section of axial seal of the present invention
Fig. 3 is the generalized section of present invention joint sealing member
Fig. 4 is 1/4 cut away view of present invention joint sealing member
Specific embodiment
To make purpose, technical scheme and the advantage of embodiments of the invention clearer, with reference to the embodiment of the present invention
In accompanying drawing, clearly complete description is carried out to the technical scheme in the embodiment of the present invention：
As Figure 1-4：A kind of gear-box shaft end bayonet-type joint labyrinth seal, mainly includes：Respectively with 2 inner ring of bearing
With the axial seal 3 and joint sealing member 6 of outer ring laminating.
As shown in figure 1, axial seal 3 is connect positioned at inner ring with 6 collar-like structure of sealing member, axial seal 3 is combined
It is paraxial, joint sealing member 6 be located at outer ring, the two relative ring surface be respectively equipped with annular sealing tooth (Fig. 1 is sectional view, therefore
Profile of tooth is shown as, annular is under practical combinations state, as shown in Figure 4), in the assembled state, described in two, sealing member interlocks
Setting forms axially disposed labyrinth seal structure I.
A closure 5 is provided with the outer face of axial seal 3 and joint sealing member 6, the closure 5 is solid by bolt 4
Due to the outer face of axial seal 3.Circle ring area arranges multiple tracks annular tooth outside the closure, after combining, close with combining
The multiple tracks annular tooth that 6 outer face of sealing is arranged is interlocked, and forms the labyrinth seal structure II being radially arranged along axle.
Fluid before labyrinth seal structure I, with certain pressure potential, by labyrinth seal I and labyrinth seal II
In backlash when, circulation area diminishes, in the presence of restriction effect, rate of flow of fluid increase, partial pressure potential energy is
Can, pressure potential is reduced.The fluid that kinetic energy increases will certainly produce heat by friction work in circulation.These heats one
Part lifting fluid temperature, a part are dissipated by sealing conduction, have at the same time dissipated a part of pressure potential of fluid.
Subsequently fluid enters cavity, and free air space becomes suddenly big.Fluid is collided with tooth, forms vortex, and flow velocity is reduced to and is approximately
Zero, kinetic energy is completely converted into heat energy.Preferably cavity can be completely reformed into heat energy the kinetic energy that gap generates, without recovering
Into pressure potential.When fluid often passes through one gap and cavity, said process constantly repeats, until in last chamber
In Fluid pressure reach consistent with ambient pressure, no longer reveal.
Further, in order to further strengthen the present invention sealing effectiveness.In the labyrinth seal structure I of axial direction
Sealing tooth is straight-tooth, and the sealing tooth in the labyrinth seal structure II of radial direction is helical teeth.
Further, in order to further increase sealing tooth sealing demand, the helical teeth be upper helical teeth windward, helical teeth
Angle be 70-90 ° relative to existing labyrinth seal, the inhibition of convection cell more, and adopt straight-tooth and above meet
The form that wind helical teeth is combined so that the axial direction after optimization is each halved with radial seal overall length, largely reduces sealing
The space of occupancy.
In order to cause axial seal and the effective transition of radial seal, it is ensured that remain able to passing through axially in changeover portion
The fluid of sealing produces inhibition, and used as preferred embodiment, the outer ledge of the described inwall for combining sealing member 6 sets
There is the extension as the first sealing tooth in the radial labyrinth sealing structure, as shown in figure 4, or being described as joint sealing member
The back side of helical teeth (reality is annular) is (actual for cylinder with the outer wall of described 3 outer end of axial seal windward for of 6
Outer wall), annular crack is cooperatively formed, as described changeover portion.
It is in order to cover bearing, it is ensured that fluid fully enters labyrinth seal structure, as preferred embodiment, described
Axial seal 3 and joint sealing member 6 there is sinking edge I31 and sinking edge respectively with the side of the contact surface of bearing touch
II61；
Under assembled state, sinking edge I and sinking edge II is relative to form the groove for covering space between bearing internal external circle
31, the inner circle of groove-bottom, the as outer wall of 3 first straight-tooth of axial seal.
For fixed axial seal 3 and joint sealing member 6, while the purpose for being sealed, as preferred embodiment party
Formula, described radial seal 5 are the covering axial seal 3 and the closure of joint 6 end face of sealing member；Radial seal
5 are fixed by the bolt of a connection axial seal 3.
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto,
Any those familiar with the art the invention discloses technical scope in, technology according to the present invention scheme and its
Inventive concept equivalent or change in addition, should all be included within the scope of the present invention.
Claims (8)
1. a kind of gear-box shaft end bayonet-type joint labyrinth seal, it is characterised in that include：Respectively with bearing (2) inner ring and outer ring
The axial seal (3) and joint sealing member (6) of laminating；
The relative periphery of the axial seal (3) and joint sealing member (6) is respectively equipped with the sealing tooth of axially staggered distribution；
The end face of joint sealing member (6) is fixed with a radial seal (5), the end face of the axial seal (6) and footpath
The sealing tooth being crisscross arranged is respectively equipped with to the relative face of sealing member (5)；
After combination, joint sealing member (6), the space between axial seal (3) and radial seal (5) form respectively and include
Joint sealing structure axially and radially.
2. bayonet-type joint labyrinth seal in gear-box shaft end according to claim 1, is further characterized in that described gear
The bayonet-type joint labyrinth seal of case shaft end, is further characterized in that described sealing tooth is straight-tooth and helical teeth.
3. bayonet-type joint labyrinth seal in gear-box shaft end according to claim 1 and 2, is further characterized in that described tooth
The bayonet-type joint labyrinth seal of roller box shaft end, it is straight-tooth that tooth is sealed in being further characterized in that described axial labyrinth seal structure；
It is helical teeth that tooth is sealed in radial labyrinth sealing structure.
4. bayonet-type joint labyrinth seal in gear-box shaft end according to claim 3, is further characterized in that the helical teeth is
On helical teeth windward.
5. bayonet-type joint labyrinth seal in gear-box shaft end according to claim 4, is further characterized in that on described and meets
The angle of wind helical teeth is 70 °～90 °.
6. bayonet-type joint labyrinth seal in gear-box shaft end according to claim 3, is further characterized in that described joint
The outer ledge of the inwall of sealing member (6) is provided with the extension as the first sealing tooth in the radial labyrinth sealing structure；
The extension is cooperatively formed with the outer wall of described axial seal (3) and connects the axial labyrinth seal structure and footpath
To the crack of labyrinth seal structure.
7. bayonet-type joint labyrinth seal in gear-box shaft end according to claim 1, is further characterized in that described axial direction
Sealing member (3) and joint sealing member (6) have sinking edge I (31) and sinking edge respectively with the side of the contact surface of bearing touch
II(61)；
Under assembled state, sinking edge I and sinking edge II, between relative formation covering bearing internal external circle, space is circular recessed
Groove.
8. bayonet-type joint labyrinth seal in gear-box shaft end according to claim 1, is further characterized in that described radial direction
Sealing member (5) is the covering axial seal (3) and the closure of joint sealing member (6) end face；Radial seal (5) passes through
The bolt of one connection axial seal (3) is fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611268675.XA CN106641204A (en) | 2016-12-31 | 2016-12-31 | Gearbox shaft end staggered tooth type combined labyrinth seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611268675.XA CN106641204A (en) | 2016-12-31 | 2016-12-31 | Gearbox shaft end staggered tooth type combined labyrinth seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106641204A true CN106641204A (en) | 2017-05-10 |
Family
ID=58839068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611268675.XA Pending CN106641204A (en) | 2016-12-31 | 2016-12-31 | Gearbox shaft end staggered tooth type combined labyrinth seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106641204A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112797082A (en) * | 2019-11-13 | 2021-05-14 | 舍弗勒技术股份两合公司 | Spring damper bearing |
| CN115383144A (en) * | 2022-08-30 | 2022-11-25 | 宝鸡一机智能装备股份有限公司 | ECF200 square turning machine |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6085659U (en) * | 1983-11-14 | 1985-06-13 | 東洋電機製造株式会社 | Vehicle gear system |
| CN102322529A (en) * | 2010-05-11 | 2012-01-18 | 通用电气公司 | Crooked labyrinth seal |
| CN203130986U (en) * | 2013-03-18 | 2013-08-14 | 潍坊埃尔派粉体技术设备有限公司 | High-sealing safety transmission 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 |
| CN104074955A (en) * | 2013-03-29 | 2014-10-01 | 常州市瑞泰工程机械有限公司 | Self-backflow type sealing structure of railway vehicle gear box |
| JP2016156462A (en) * | 2015-02-25 | 2016-09-01 | 新日鐵住金株式会社 | Non-contact seal device for gear device for railroad vehicle |
-
2016
- 2016-12-31 CN CN201611268675.XA patent/CN106641204A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6085659U (en) * | 1983-11-14 | 1985-06-13 | 東洋電機製造株式会社 | Vehicle gear system |
| CN102322529A (en) * | 2010-05-11 | 2012-01-18 | 通用电气公司 | Crooked labyrinth seal |
| CN203130986U (en) * | 2013-03-18 | 2013-08-14 | 潍坊埃尔派粉体技术设备有限公司 | High-sealing safety transmission 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 |
| CN104074955A (en) * | 2013-03-29 | 2014-10-01 | 常州市瑞泰工程机械有限公司 | Self-backflow type sealing structure of railway vehicle gear box |
| JP2016156462A (en) * | 2015-02-25 | 2016-09-01 | 新日鐵住金株式会社 | Non-contact seal device for gear device for railroad vehicle |
Non-Patent Citations (1)
| Title |
|---|
| 王琛: ""机车牵引齿轮箱密封装置内部流场的研究及结构优化设计"", 《中国优秀硕士学位论文全文数据库 工程科技第II辑》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112797082A (en) * | 2019-11-13 | 2021-05-14 | 舍弗勒技术股份两合公司 | Spring damper bearing |
| CN115383144A (en) * | 2022-08-30 | 2022-11-25 | 宝鸡一机智能装备股份有限公司 | ECF200 square turning machine |
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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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170510 |
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| RJ01 | Rejection of invention patent application after publication |