CN113819222B - Air cap for speed reducer - Google Patents
Air cap for speed reducer Download PDFInfo
- Publication number
- CN113819222B CN113819222B CN202111215221.7A CN202111215221A CN113819222B CN 113819222 B CN113819222 B CN 113819222B CN 202111215221 A CN202111215221 A CN 202111215221A CN 113819222 B CN113819222 B CN 113819222B
- Authority
- CN
- China
- Prior art keywords
- shell
- cylindrical
- rectangular
- outer cylindrical
- hole
- 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.)
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- 239000003638 chemical reducing agent Substances 0.000 title claims abstract description 26
- 230000001681 protective effect Effects 0.000 claims abstract description 9
- 239000003921 oil Substances 0.000 description 18
- 239000003595 mist Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000010687 lubricating oil Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000010586 diagram Methods 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
- 238000007789 sealing Methods 0.000 description 1
Classifications
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- 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 body in a hexagonal shape, wherein the inner top end of the upper outer shell body is provided with an inner threaded hole, and the inner bottom surface of the inner threaded hole is provided with a connecting 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 tube is connected with a lower shell; the lower shell comprises a rectangular shell which is long and provided with a downward inclined bottom surface, the lower end of one side of the rectangular shell is connected with a hollowed-out cylindrical shell, and a plurality of through holes which are distributed in a staggered manner are formed in the cylindrical shell; a buffer cavity is arranged in the rectangular shell and is respectively communicated with the inner cavity of the outer cylindrical tube and the hollowed-out part of the cylindrical shell. The invention can reduce 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 in each medium-load machine, is a closed transmission device between a prime motor and a working machine, and has the main functions of reducing the rotating speed and increasing the torque so as to meet the requirement of mechanical work. Lubricating oil is an essential lubricant for gear transmission systems, which not only plays a role in lubrication, but also has a role in cooling gears and bearings, and is essential in speed reducers. However, there is an unavoidable problem in the speed reducer, namely oil leakage of the speed reducer, which is a problem that has plagued enterprises, on one hand, mechanical failure is caused, on the other hand, adverse effects on the surrounding environment and even pollution on products are caused, and meanwhile, the working efficiency of the speed reducer is affected. Therefore, it is important to analyze the cause of oil leakage of the decelerator and grasp the solution. Among these, the unreasonable structural design of the speed reducer is the most common factor. The oil leakage is caused by the clearance, and the only incompletely sealed position in the speed reducer is the air cap, so that how to improve the air cap to reduce oil leakage is a technical problem which is urgent to be solved by the applicant.
Disclosure of Invention
The invention aims to provide an air cap for a speed reducer. The invention can reduce 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 an upper outer shell body in a hexagonal shape, wherein the inner top end of the upper outer shell body is provided with an inner threaded hole, and the inner bottom surface of the inner threaded hole is provided with a connecting 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 tube is connected with a lower shell; the lower shell comprises a rectangular shell with a strip-shaped rectangular shell with a downward inclined bottom surface, the lower end of one side of the rectangular shell is connected with a hollowed-out cylindrical shell, and a plurality of through holes distributed in a staggered manner are formed in the cylindrical shell; a buffer cavity is arranged in the rectangular shell and is respectively communicated with the inner cavity of the outer cylindrical tube and the hollowed-out part of the cylindrical shell.
The air cap for the speed reducer is characterized in that the lower end of the outer cylindrical tube 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 is provided with two through holes, wherein one through hole is positioned on the upper side of the cylindrical shell, the other through hole is positioned on the lower side of the cylindrical shell, and the through holes are staggered in a cross manner.
The air cap for the speed reducer is characterized in that the inside of the protective cap is fixedly connected with a plurality of vertical rods, the lower ends of the vertical rods are connected with threaded rings, and the threaded rings are in threaded fit with the internal 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 the annular groove above the internal threaded 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 to the inner cavity of the outer cylindrical tube and the hollowed-out part of the cylindrical shell, a plurality of staggered through holes are formed in the cylindrical shell, the through holes, the circulation cavity, the inner cavity of the outer cylindrical tube and the hollow part of the cylindrical shell form an air circulation channel of the air cap, an air circulation effect is formed, meanwhile, oil drops splashed to the buffer cavity can flow in the buffer cavity through the design of the buffer cavity of the rectangular shell, a buffer backflow phenomenon is formed, the problem that oil drops leak through the inner cavity of the outer cylindrical tube and the connecting hole upwards can be avoided, and the rectangular shell is provided with a lower inclined bottom surface, so that the oil backflow is facilitated. The cylinder is provided with the plurality of through holes which are distributed in a staggered manner, and the internal and external air pressure can be kept equal through the through holes, so that leakage caused by that the cylinder hole is blocked by splashed oil drops of the cylinder air cap which is not perforated is avoided. Further, the lower end of the outer cylindrical tube is connected to the upper end of one side of the long side of the rectangular shell, and the abrupt expansion flow passage structure at the joint of the cylindrical tube outlet and the rectangular shell is beneficial to breaking oil drops (oil film bubbles) at the joint under the action of pressure difference; the upper end of the cylindrical pipe is fixedly connected to the lower end of the other side of the short side of the rectangular shell, so that the air circulation path is lengthened, and if oil mist formed by temperature flows into the air circulation channel, the mist can be cooled and returned through the longer air circulation channel, and the risk of oil leakage is reduced.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
fig. 2 is a schematic top view of the present invention.
Reference numerals
1. An upper outer case; 2. an internal threaded hole; 3. a connection hole; 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 intended to be limiting.
Examples: an air cap for a speed reducer is shown in fig. 1 and 2, and comprises an upper outer shell 1 in a hexagonal shape, wherein an internal threaded hole 2 is formed in the inner top end of the upper outer shell 1, a connecting hole 3 is formed in the inner bottom surface of the internal threaded hole 2, a filter screen can be arranged between the internal 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 ensured; the upper outer shell 1 is provided with a protective cap 4 in a sliding manner, 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 threaded rings 12, the threaded rings 12 are in threaded fit with the internal 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 manner; the lower end of the upper outer shell 1 is fixedly connected with an outer cylindrical tube 5, the upper outer shell 1 and the outer cylindrical tube 5 are integrally formed, and the inner cavity of the outer cylindrical tube 5 is communicated with the connecting hole 3; the lower end of the outer cylindrical tube 5 is connected with a lower shell 6, and the lower shell 6 and the shell of the speed reducer are integrally formed, and can also be in other sealing matching modes; the lower shell 6 comprises an elongated rectangular shell 7 with a downward inclined bottom surface, and the lower end of the outer cylindrical tube 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 and oil-tight; the lower end of one side of the rectangular shell 7 is connected with a hollowed cylindrical shell 8; the lower end of the outer cylindrical tube 5 is connected to the upper end of one side of the rectangular shell 7, the upper end of the cylindrical tube 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, 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; 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 tube 5 and the hollowed-out part of the cylindrical shell 8.
Furthermore, the upper surface of the upper outer shell 1 is also provided with an annular groove 13 positioned above the internal threaded 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 the rectangular shell 7 and the cylindrical shell 8, the buffer cavity 10 of the rectangular shell 7 is connected with the inner cavity of the outer cylindrical tube 5 and the hollowed-out 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, the circulation cavity and the inner cavity of the outer cylindrical tube 5 and the hollow part of the cylindrical shell 8, an 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, a buffer backflow phenomenon is formed, the problem that oil drops leak upwards through the inner cavity of the outer cylindrical tube 5 and the connecting hole 3 can be reduced, and the rectangular shell is provided with a downward inclined bottom surface, so that lubricating oil backflow is facilitated. The cylinder barrel is provided with the through holes 9 which are distributed in a staggered manner, the internal and external air pressures can be kept equal through the through holes 9, and oil dirt formed in the cylinder barrel for a long time can slide down through self gravity, so that the cylinder barrel is prevented from being blocked. Further, 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 is fixedly connected to the lower end of the other side of the rectangular shell 7, so that the air circulation path is lengthened, and if oil mist formed by temperature flows into the air circulation channel, the mist can be cooled and returned through the longer air circulation channel, and the risk of oil leakage is reduced.
Claims (4)
1. 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 part of the upper outer shell (1), and a connecting hole (3) is formed in the inner bottom surface of the inner 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 tube (5) is connected with a lower shell (6); the lower shell (6) comprises a rectangular shell (7) which is 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-out cylindrical shell (8), and a plurality of through holes (9) which are distributed in a staggered manner are formed in the cylindrical shell (8); 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 tube (5) and the hollowed-out part of the cylindrical shell (8); the lower end of the outer cylindrical tube (5) is connected with the upper end of one side of the rectangular shell (7), and the upper end of the cylindrical shell (8) is fixedly connected with the lower end of the other side of the rectangular shell (7); the number of the through holes (9) is two, one through hole (9) is positioned on the upper side of the cylindrical shell (8), the other through hole (9) is positioned on the lower side of the cylindrical shell (8), and the through holes (9) are staggered in a cross mode.
2. The air cap for a decelerator according to claim 1, wherein: the lower end of the outer cylindrical tube (5) is in threaded connection with the rectangular shell (7).
3. The air cap for a decelerator according to claim 1, wherein: the inside of helmet (4) is fixedly connected with a plurality of montants (11), and screwed ring (12) are connected to the lower extreme of montant (11), and screwed ring (12) and the internal thread hole (2) of last shell body (1) screw-thread fit.
4. The air cap for a decelerator according to claim 1, wherein: the upper surface of the upper outer shell (1) is also provided with an annular groove (13) positioned above the internal threaded 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 CN113819222A (en) | 2021-12-21 |
| CN113819222B true 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 |
|---|---|
| CN113819222A (en) | 2021-12-21 |
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