CN113819222A - Air cap for speed reducer - Google Patents
Air cap for speed reducer Download PDFInfo
- Publication number
- CN113819222A CN113819222A CN202111215221.7A CN202111215221A CN113819222A CN 113819222 A CN113819222 A CN 113819222A CN 202111215221 A CN202111215221 A CN 202111215221A CN 113819222 A CN113819222 A CN 113819222A
- Authority
- CN
- China
- Prior art keywords
- shell
- cylindrical pipe
- air cap
- rectangular
- cylindrical
- 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.)
- Granted
Links
- 239000003638 chemical reducing agent Substances 0.000 title claims abstract description 27
- 230000001681 protective effect Effects 0.000 claims abstract description 10
- 239000003921 oil Substances 0.000 description 20
- 230000000694 effects Effects 0.000 description 3
- 239000010687 lubricating oil Substances 0.000 description 3
- 239000003595 mist Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Images
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
- F16H57/027—Gearboxes; Mounting gearing therein characterised by means for venting gearboxes, e.g. air breathers
-
- 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
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0412—Cooling or heating; Control of temperature
-
- 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
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/042—Guidance of lubricant
Abstract
The invention discloses an air cap for a speed reducer, which comprises an upper outer shell in a hexagonal shape, wherein an internal thread hole is formed in the top end of the interior of the upper outer shell, and a connecting hole is formed in the bottom surface of the interior of the internal thread hole; a protective cap is slidably arranged on the upper outer shell; the lower end of the upper outer shell is fixedly connected with an outer cylindrical pipe, and the inner cavity of the outer cylindrical pipe is communicated with the connecting hole; the method is characterized in that: the lower end of the outer cylindrical pipe is connected with a lower shell; the lower shell comprises a rectangular shell which is long-strip-shaped and provided with a downward inclined bottom surface, the lower end of one side of the rectangular shell is connected with a hollowed cylindrical shell, and a plurality of through holes which are distributed in a staggered manner are formed in the cylindrical shell; and a buffer cavity is arranged in the rectangular shell and is respectively communicated with the inner cavity of the outer cylindrical pipe and the hollow part of the cylindrical shell. The invention can reduce the oil leakage of the speed reducer and is not easy to block.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to an air cap for a speed reducer.
Background
The speed reducer is one of the most widely used core components of various medium-load machines, is a closed transmission device between a prime mover and a working machine, and mainly has the functions of reducing the rotating speed and increasing the torque so as to meet the requirements of mechanical work. Lubricating oil is an essential lubricant for a gear transmission system, not only plays a role in lubrication, but also has a cooling role for gears and bearings, and is essential in a speed reducer. However, the speed reducer has an inevitable problem, namely oil leakage of the speed reducer, which always troubles enterprises, on one hand, mechanical failure can be caused, on the other hand, adverse effects and even product pollution are caused to the surrounding environment, and meanwhile, the working efficiency of the speed reducer is influenced. Therefore, it is important to analyze the cause of the oil leakage of the reducer and grasp the solution. Among these, the unreasonable design of the reducer structure is the most common factor. The oil leakage is caused by the clearance, and the only position in the speed reducer where the oil is not completely sealed is the air cap, so how to improve the air cap to reduce the oil leakage becomes a technical problem to be solved urgently by the applicant.
Disclosure of Invention
The invention aims to provide an air cap for a speed reducer. The invention can reduce the oil leakage of the speed reducer and is not easy to block.
The technical scheme of the invention is as follows: an air cap for a speed reducer comprises a hexagonal upper outer shell, wherein an inner threaded hole is formed in the top end of the inner portion of the upper outer shell, and a connecting hole is formed in the bottom surface of the inner threaded hole; a protective cap is slidably arranged on the upper outer shell; the lower end of the upper outer shell is fixedly connected with an outer cylindrical pipe, and the inner cavity of the outer cylindrical pipe is communicated with the connecting hole; the lower end of the outer cylindrical pipe is connected with a lower shell; the lower shell comprises a rectangular shell which is long-strip-shaped and is provided with a downward inclined bottom surface, the lower end of one side of the rectangular shell is connected with a hollowed cylindrical shell, and a plurality of through holes which are distributed in a staggered manner are formed in the cylindrical shell; and a buffer cavity is arranged in the rectangular shell and is respectively communicated with the inner cavity of the outer cylindrical pipe and the hollow part of the cylindrical shell.
In the air cap for the speed reducer, the lower end of the outer cylindrical pipe is in threaded connection with the rectangular shell.
In the air cap for the speed reducer, the lower end of the outer cylindrical tube is connected to the upper end of one side of the rectangular shell, and the upper end of the cylindrical tube is fixedly connected to the lower end of the other side of the rectangular shell.
The air cap for the speed reducer comprises two through holes, wherein one through hole is positioned at the upper side of the cylindrical shell, the other through hole is positioned at the lower side of the cylindrical shell, and the through holes are staggered in a cross manner.
In the air cap for the speed reducer, the inside of the protective cap is fixedly connected with the plurality of vertical rods, the lower ends of the vertical rods are connected with the threaded rings, and the threaded rings are in threaded fit with the inner threaded holes of the upper outer shell.
In the air cap for the speed reducer, the upper surface of the upper outer shell is also provided with an annular groove located above the internal thread hole.
Compared with the prior art, the lower shell of the air cap is a combination of the rectangular shell and the cylindrical shell, the buffer cavity of the rectangular shell is connected with the inner cavity of the outer cylindrical pipe and the hollow part of the cylindrical shell, the cylindrical shell is provided with a plurality of staggered through holes, and an air circulation channel of the air cap is formed by the through holes, the circulation cavity, the inner cavity of the outer cylindrical pipe and the hollow part of the cylindrical shell, so that the air circulation effect is formed. The cylinder is provided with a plurality of through holes which are distributed in a staggered manner, so that the internal air pressure and the external air pressure can be kept equal through the through holes, and the phenomenon that an air cap of the cylinder which is not provided with holes is directly brought out of the air cap by hot air flow and is leaked due to the fact that splashed oil drops block the cylinder holes is avoided. Furthermore, the lower end of the outer cylindrical tube is connected to the upper end of one side of the long edge of the rectangular shell, and the sudden-expansion flow channel structure at the connection part of the outlet of the cylindrical tube and the rectangular shell is favorable for oil drops to break oil films (oil film bubbles) under the action of pressure difference; with the upper end fixed connection of cylinder pipe at the minor face opposite side lower extreme of rectangle shell, lengthened the route of circulation of air for if because of the oil mist that the temperature formed flows into behind the circulation of air passageway, through longer circulation of air passageway can make there be the cooling reflux of fog, reduce the risk of oil leak.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic top view of the present invention.
Reference numerals
1. An upper outer shell; 2. an internally threaded bore; 3. connecting holes; 4. a protective cap; 5. an outer cylindrical tube; 6. a lower housing; 7. a rectangular shell; 8. a cylindrical shell; 9. a through hole; 10. a buffer chamber; 11. a vertical rod; 12. a threaded ring; 13. an annular groove.
Detailed Description
The invention is further illustrated by the following figures and examples, which are not to be construed as limiting the invention.
Example (b): an air cap for a speed reducer comprises an upper outer shell 1 in a hexagonal shape, wherein an inner threaded hole 2 is formed in the top end of the inner portion of the upper outer shell 1, a connecting hole 3 is formed in the bottom surface of the inner threaded hole 2, a filter screen can be arranged between the inner threaded hole 2 and the connecting hole 3, external impurities are prevented from entering, and the quality of lubricating oil in the speed reducer is guaranteed; the protective cap 4 is slidably mounted on the upper outer shell 1, a plurality of vertical rods 11 are fixedly connected inside the protective cap 4, the lower ends of the vertical rods 11 are connected with threaded rings 12, the threaded rings 12 are in threaded fit with the inner threaded holes 2 of the upper outer shell 1, and the protective cap 4 is fixedly connected with the upper outer shell 1 in a threaded fit mode; the lower end of the upper outer shell 1 is fixedly connected with an outer cylindrical pipe 5, the upper outer shell 1 and the outer cylindrical pipe 5 are integrally formed, and the inner cavity of the outer cylindrical pipe 5 is communicated with the connecting hole 3; the lower end of the outer cylindrical pipe 5 is connected with a lower shell 6, and the lower shell 6 and the shell of the speed reducer are integrally formed or can be in other sealing matching modes; the lower shell 6 comprises a rectangular shell 7 which is long-strip-shaped and provided with a downward inclined bottom surface, and the lower end of the outer cylindrical pipe 5 is in threaded connection with the rectangular shell 7; the rectangular shell 7 is connected with an upper cover plate of the speed reducer, the upper outer shell 1 is in threaded connection with the upper cover plate of the speed reducer, and the joint is sealed without oil leakage; the lower end of one side of the rectangular shell 7 is connected with a hollow cylindrical shell 8; the lower end of the outer cylindrical pipe 5 is connected to the upper end of one side of the rectangular shell 7, the upper end of the cylindrical pipe is fixedly connected to the lower end of the other side of the rectangular shell 7, a plurality of through holes 9 distributed in a staggered mode are formed in the cylindrical shell 8, two through holes 9 are formed in each cylindrical shell 8, one through hole 9 is located on the upper side of the cylindrical shell 8, the other through hole 9 is located on the lower side of the cylindrical shell 8, and the through holes 9 are staggered in a cross mode; and a buffer cavity 10 is arranged in the rectangular shell 7, and the buffer cavity 10 is respectively communicated with the inner cavity of the outer cylindrical pipe 5 and the hollow part of the cylindrical shell 8.
Further, the upper surface of the upper outer shell 1 is also provided with an annular groove 13 which is positioned above the internal thread hole 2, and the groove is convenient for installing the protective cap 4.
Principle of operation
The lower shell 6 of the air cap is a combination of a rectangular shell 7 and a cylindrical shell 8, a buffer cavity 10 of the rectangular shell 7 is connected with the inner cavity of an outer cylindrical pipe 5 and the hollow part of the cylindrical shell 8, a plurality of staggered through holes 9 are formed in the cylindrical shell 8, an air circulation channel of the air cap is formed by the through holes 9, a circulation cavity, the inner cavity of the outer cylindrical pipe 5 and the hollow part of the cylindrical shell 8, the air circulation effect is formed, meanwhile, the buffer cavity 10 of the rectangular shell 7 is designed to enable oil drops splashed to the buffer cavity 10 to flow back and forth in the buffer cavity 10 to form the buffer backflow phenomenon, the problem that the oil drops penetrate through the inner cavity of the outer cylindrical pipe 5 and the connecting hole 3 upwards to leak oil can be reduced, and the rectangular shell is provided with a downward inclined bottom surface to facilitate the backflow of lubricating oil. The cylindrical barrel is provided with the plurality of through holes 9 which are distributed in a staggered mode, the internal air pressure and the external air pressure can be kept to be equal through the through holes 9, oil dirt formed in the cylindrical barrel for a long time can slide down through the self gravity, and the cylindrical barrel is prevented from being blocked. Furthermore, the lower end of the outer cylindrical pipe 5 is connected to the upper end of one side of the rectangular shell 7, the upper end of the cylindrical pipe is fixedly connected to the lower end of the other side of the rectangular shell 7, and the air circulation path is lengthened, so that if oil mist formed due to temperature flows into the air circulation channel, the oil mist can be cooled and reflowed through the longer air circulation channel, and the risk of oil leakage is reduced.
Claims (6)
1. An air cap for a speed reducer comprises an upper outer shell (1) in a hexagonal shape, wherein an internal threaded hole (2) is formed in the top end of the interior of the upper outer shell (1), and a connecting hole (3) is formed in the bottom surface of the interior of the internal threaded hole (2); a protective cap (4) is slidably arranged on the upper outer shell (1); the lower end of the upper outer shell (1) is fixedly connected with an outer cylindrical pipe (5), and the inner cavity of the outer cylindrical pipe (5) is communicated with the connecting hole (3); the method is characterized in that: the lower end of the outer cylindrical pipe (5) is connected with a lower shell (6); the lower shell (6) comprises a rectangular shell (7) which is long-strip-shaped and provided with a downward inclined bottom surface, the lower end of one side of the rectangular shell (7) is connected with a hollowed cylindrical shell (8), and a plurality of through holes (9) which are distributed in a staggered mode are formed in the cylindrical shell (8); the rectangular shell (7) is internally provided with a buffer cavity (10), and the buffer cavity (10) is respectively communicated with the inner cavity of the outer cylindrical pipe (5) and the hollow part of the cylindrical shell (8).
2. The air cap for a reduction gear according to claim 1, characterized in that: the lower end of the outer cylindrical pipe (5) is in threaded connection with the rectangular shell (7).
3. The air cap for a reduction gear according to claim 1, characterized in that: the lower end of the outer cylindrical pipe (5) is connected to the upper end of one side of the rectangular shell (7), and the upper end of the cylindrical pipe (8) is fixedly connected to the lower end of the other side of the rectangular shell (7).
4. The air cap for a reduction gear according to claim 1, characterized in that: the number of the through holes (9) is two, one through hole (9) is positioned at the upper side of the cylindrical shell (8), the other through hole (9) is positioned at the lower side of the cylindrical shell (8), and the through holes (9) are crisscross.
5. The air cap for a reduction gear according to claim 1, characterized in that: the interior of the protective cap (4) is fixedly connected with a plurality of vertical rods (11), the lower ends of the vertical rods (11) are connected with a threaded ring (12), and the threaded ring (12) is in threaded fit with the internal threaded hole (2) of the upper outer shell (1).
6. The air cap for a reduction gear according to claim 1, characterized in that: the upper surface of the upper outer shell (1) is also provided with an annular groove (13) located above the internal thread hole (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111215221.7A CN113819222B (en) | 2021-10-19 | 2021-10-19 | Air cap for speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111215221.7A CN113819222B (en) | 2021-10-19 | 2021-10-19 | Air cap for speed reducer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113819222A true CN113819222A (en) | 2021-12-21 |
| CN113819222B CN113819222B (en) | 2024-01-23 |
Family
ID=78916952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111215221.7A Active CN113819222B (en) | 2021-10-19 | 2021-10-19 | Air cap for speed reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113819222B (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001165283A (en) * | 1999-12-09 | 2001-06-19 | Suzuki Motor Corp | Breather structure of power transmission |
| CN101949447A (en) * | 2010-10-22 | 2011-01-19 | 北车兰州机车有限公司 | Sight hole cover of reducer and reducer |
| JP2012036986A (en) * | 2010-08-09 | 2012-02-23 | Aisin Ai Co Ltd | Breather structure of transmission |
| CN202327036U (en) * | 2011-11-28 | 2012-07-11 | 唐山通力齿轮有限公司 | Labyrinth type air exhaust system |
| CN202812146U (en) * | 2012-07-31 | 2013-03-20 | 长城汽车股份有限公司 | Integrated ventilation plug |
| CN204127281U (en) * | 2014-09-19 | 2015-01-28 | 沃德(天津)传动有限公司 | Abat-vent and the speed reducer applied thereof |
| CN204201017U (en) * | 2014-09-17 | 2015-03-11 | 中国第一汽车股份有限公司 | Rotary type oil-leakage-prevention air vent structure on a kind of reducing gearbox |
| CN105485313A (en) * | 2014-09-19 | 2016-04-13 | 沃德(天津)传动有限公司 | Ventilation cap and speed reducer used for ventilation cap |
| CN206360743U (en) * | 2017-01-11 | 2017-07-28 | 上海意台自动化设备有限公司 | Huge discharge High-precision O CV valve pockets in a kind of VVT |
| CN210978472U (en) * | 2019-11-27 | 2020-07-10 | 浙江恒齿传动股份有限公司 | Ventilation cap for speed reducer |
| DE102019204907A1 (en) * | 2019-04-05 | 2020-10-08 | Zf Friedrichshafen Ag | Transmission for a commercial vehicle with a transmission housing with a ventilation arrangement |
| CN212480059U (en) * | 2020-04-26 | 2021-02-05 | 沃德传动（天津）股份有限公司 | Novel sight hole cover |
| CN213117393U (en) * | 2021-04-01 | 2021-05-04 | 捷诺传动系统(常州)有限公司 | Oil leakage prevention device of speed reducer |
-
2021
- 2021-10-19 CN CN202111215221.7A patent/CN113819222B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001165283A (en) * | 1999-12-09 | 2001-06-19 | Suzuki Motor Corp | Breather structure of power transmission |
| JP2012036986A (en) * | 2010-08-09 | 2012-02-23 | Aisin Ai Co Ltd | Breather structure of transmission |
| CN101949447A (en) * | 2010-10-22 | 2011-01-19 | 北车兰州机车有限公司 | Sight hole cover of reducer and reducer |
| CN202327036U (en) * | 2011-11-28 | 2012-07-11 | 唐山通力齿轮有限公司 | Labyrinth type air exhaust system |
| CN202812146U (en) * | 2012-07-31 | 2013-03-20 | 长城汽车股份有限公司 | Integrated ventilation plug |
| CN204201017U (en) * | 2014-09-17 | 2015-03-11 | 中国第一汽车股份有限公司 | Rotary type oil-leakage-prevention air vent structure on a kind of reducing gearbox |
| CN204127281U (en) * | 2014-09-19 | 2015-01-28 | 沃德(天津)传动有限公司 | Abat-vent and the speed reducer applied thereof |
| CN105485313A (en) * | 2014-09-19 | 2016-04-13 | 沃德(天津)传动有限公司 | Ventilation cap and speed reducer used for ventilation cap |
| CN206360743U (en) * | 2017-01-11 | 2017-07-28 | 上海意台自动化设备有限公司 | Huge discharge High-precision O CV valve pockets in a kind of VVT |
| DE102019204907A1 (en) * | 2019-04-05 | 2020-10-08 | Zf Friedrichshafen Ag | Transmission for a commercial vehicle with a transmission housing with a ventilation arrangement |
| CN210978472U (en) * | 2019-11-27 | 2020-07-10 | 浙江恒齿传动股份有限公司 | Ventilation cap for speed reducer |
| CN212480059U (en) * | 2020-04-26 | 2021-02-05 | 沃德传动（天津）股份有限公司 | Novel sight hole cover |
| CN213117393U (en) * | 2021-04-01 | 2021-05-04 | 捷诺传动系统(常州)有限公司 | Oil leakage prevention device of speed reducer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113819222B (en) | 2024-01-23 |
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