CN102777576B - Gearbox with floating ventilation device and use method of gearbox - Google Patents
Gearbox with floating ventilation device and use method of gearbox Download PDFInfo
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- CN102777576B CN102777576B CN201110121693.6A CN201110121693A CN102777576B CN 102777576 B CN102777576 B CN 102777576B CN 201110121693 A CN201110121693 A CN 201110121693A CN 102777576 B CN102777576 B CN 102777576B
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Abstract
The invention relates to a gearbox with a floating ventilation device and a use method of the gearbox. A floating piston is arranged at the external side port of the ventilation passage of the gearbox. Difference between pressure of an external environment and the internal pressure of the gearbox is balanced through the floating ventilation device. When the internal oil gas pressure of the gearbox has a trend of being too high, the ventilation device is closed through the piston to prevent problems such as that oil gas temperature is excessively increased, oil gas leaks and the like. The gearbox comprises a box body and the ventilation passage which is used for guiding external air into a gear set. The floating piston is arranged at the external side port of the ventilation passage and is arranged in an inner groove of a ventilation cover. A ventilation hole is arranged in the top of the inner groove at a position relative to the vertical direction of the piston. The piston is suspended in the inner groove of the ventilation cover. When the air pressure of the external environment is lower than the oil gas pressure in the gearbox, the piston is in a closed state. Since the piston can move upwards to plug the ventilation hole in the top of the inner groove, the oil gas in the gearbox is prevented from leaking outside and the oil gas temperature in the gearbox is prevented from being too high.
Description
Technical field
The present invention relates to a kind of for the gear box structure of rail vehicle and the improvement of using method thereof, belong to mechanical manufacturing field.
Background technique
At present the domestic rail vehicle speed per hour running on main line railway reached 380 kilometers and more than, thus more strict designing and employing performance requirement is proposed for power system.
The Linear motor bogie that existing rail vehicle adopts, its gear-box is connected to linear electric motor by shaft coupling usually, and gear-box is sheathed on axletree place and hangs on bogie frame.For ensureing the high speed of gear-box inner teeth wheels, lubrication friction and rotation, and be provided with the air-breather importing outside air in gear case body end.
The air-breather that current gear case uses lacks pressure regulating power, before and after two vehicle meetings of running at high speed or before and after the longer tunnel of vehicles traverse, pressure difference between external environment condition and gear-box inside is acute variation, and this type of draught head is higher and be enough to cause gear-box interior oil atmospheric pressure ground to raise suddenly, thus oil gas temperature is caused to raise or to the generation of the problems such as external leakage.
Along with rail vehicle travelling speed improve constantly, the oil gas that above-mentioned pressure difference the causes problem that leaks directly has influence on the normal operation of gear-box inner teeth wheels, even can cause that the rotation of gear train is abnormal waits serious accident.
In view of this special proposition present patent application.
Summary of the invention
The gear-box of band floating type ventilation device of the present invention and using method thereof, its object is to solve above-mentioned prior art Problems existing and arrange a floating type piston at the outside port of gear-box air vent, balance the pressure difference of external environment condition and gear-box inside with this type of floating type ventilation device.When too high trend appears in gear-box interior oil atmospheric pressure, close air-breather by piston and prevent the problems such as oil gas excessive temperature raises, oil gas leaks.
Another goal of the invention is, imports gear-box carry out free adjusting for air, and realizes the cleanliness of air-filtering purification, the inner oil gas of guarantee gear-box.
For achieving the above object, the gear-box of described band floating type ventilation device, is connected to traction electric machine by shaft coupling, includes casing, and for outside air being imported the air vent of gear train.
Difference with the prior art part is,
The port, outside of air vent is provided with a floating type piston, and piston is arranged in the inner groovy of vent hood;
Relatively vent is provided with at inner groovy top, with piston is vertical.
As above-mentioned basic scheme feature, piston is suspended in the inner groovy of vent hood, and under normal operation, the air pressure of external environment condition is greater than the oil-air pressure of gear-box inside, and piston is in opening state.In turn set up the air free exchange passage between gear-box and external environment condition by vent, piston and air vent.
When gear-box ambient pressure is negative value, when namely the air pressure of external environment condition is less than the oil-air pressure of gear-box inside, piston is in closed state.The vent at piston upwards shutoff inner groovy top, the oil gas temperature of gear-box inside of leaking to avoid the oil gas of gear-box inside, ensure can not be too high.
Completely closed for vent when smooth and easy, the piston of air exchange when ensureing that piston is in opening state is in closed state simultaneously, the further refinement scheme that can take is, the cross-section structure of described piston is T-shaped, is provided with the vent slot of indent at the sidepiece of piston tip.
For improving the external environment and the cleanliness of air circulation between gear-box, the probability that dust storm or other air planktons enter gear-box is reduced by the air guiding flow passage extending similar labyrinth structure, described vent hood can be set to the double layer construction with inside and outside cover, between inner sleeve and overcoat, form the honeycomb duct importing air to gear-box, honeycomb duct is communicated to vent.
The more efficiently technological means that purifies air is provided with filter layer in honeycomb duct.
Based on the architecture advances of the band floating type ventilation device of said gear case, The invention also achieves following gear-box using method, namely in the port, outside of air vent outside air being imported gear train, piston is suspended in the inner groovy of vent hood.
When the air pressure of external environment condition is less than the oil-air pressure of gear-box inside, the vent at piston upwards shutoff inner groovy top leaks to prevent oil gas.
Under ensureing normal operating condition, the air exchange between external environment condition and gear-box, by the indent vent slot of piston tip sidepiece, imports the air vent of gear-box inside by outside air.
Filtration, purification measure for ventilating air is that vent hood is provided with the double layer construction of inside and outside cover, is formed and import to gear-box the filter layer arranging impurity screening in the honeycomb duct of air between inner sleeve and overcoat.
To sum up content, the advantage that the gear-box of described band floating type ventilation device and using method thereof have is:
1, by the pressure difference of the balanced external environment condition of floating piston with gear-box inside, effectively prevent gear-box interior oil gas excessive temperature from raising or oil gas such as to leak at the problem, the normal operation of guarantee gear-box.
2, filter importing the air of gear-box, purify, ensure the cleanliness of the inner oil gas of gear-box, extend gear-box working life.
Accompanying drawing explanation
Now in conjunction with the following drawings the present invention is described further;
Fig. 1 is the schematic diagram of described gear-box;
Fig. 2 is with another side schematic view of gear-box to cut-away section of A-A in Fig. 1;
Fig. 3 is I portion enlarged diagram in Fig. 2;
Fig. 4 is the structural representation of piston;
Fig. 5 is the contrast schematic diagram of piston under 2 kinds of states;
As shown in Figures 1 to 5, casing 1, air vent 2, piston 3, vent hood 4, vent slot 30, inner groovy 40, vent 41, inner sleeve 42, overcoat 43, honeycomb duct 44, filter layer 45.
Embodiment
Embodiment 1, as shown in Figures 1 to 5, the gear-box of described band floating type ventilation device, be connected to traction electric machine by shaft coupling, it mainly includes:
Casing 1,
For outside air being imported the air vent 2 of gear train,
Be provided with a floating type piston 3 in the port, outside of air vent 2, piston 3 is arranged in the inner groovy 40 of vent hood 4.The cross-section structure of piston 3 is T-shaped, is provided with the vent slot 30 of indent at the sidepiece on piston 3 top;
Vent 41 is relatively provided with at inner groovy 40 top, with piston 3 is vertical;
Vent hood 4 has the double layer construction of inside and outside cover, and between inner sleeve 42 and overcoat 43, form the honeycomb duct 44 importing air to gear-box, honeycomb duct 44 is communicated to vent 41;
Filter layer 45 is provided with in honeycomb duct 44.
Described gear-box using method, in the port, outside of air vent 2 outside air being imported gear train, piston 3 is suspended in the inner groovy 40 of vent hood 4.
When the air pressure of external environment condition is less than the oil-air pressure of gear-box inside, the vent 41 at piston 3 upwards shutoff inner groovy 40 top leaks to prevent oil gas.
When the air pressure of external environment condition is not less than the oil-air pressure of gear-box inside, by the indent vent slot 30 of piston 3 tip-end-side, outside air is imported or derives the air vent 2 of gear-box inside.
Vent hood 4 is provided with the double layer construction of inside and outside cover, formed between inner sleeve 42 and overcoat 43 and import to gear-box the filter layer 45 that impurity screening is set in the honeycomb duct 44 of air, the air importing gear-box is filtered and purified, ensures the cleanliness of the inner oil gas of gear-box.
Claims (2)
1. the gear-box with floating type ventilation device, is connected to traction electric machine by shaft coupling, comprising casing (1) and the air vent (2) for outside air being imported gear train, it is characterized in that:
Be provided with a floating type piston (3) in the port, outside of air vent (2), piston (3) is arranged in the inner groovy (40) of vent hood (4);
The cross-section structure of piston (3) is T-shaped, is provided with the vent slot (30) of indent at the sidepiece on piston (3) top;
Vent (41) is relatively provided with at inner groovy (40) top, with piston (3) is vertical;
Vent hood (4) has the double layer construction of inside and outside cover, between inner sleeve (42) and overcoat (43), form the honeycomb duct (44) importing air to gear-box, honeycomb duct (44) is communicated to vent (41);
Filter layer (45) is provided with in honeycomb duct (44).
2. a gear-box using method, is characterized in that: in the port, outside of air vent (2) outside air being imported gear train, piston (3) is suspended in the inner groovy (40) of vent hood (4);
By the indent vent slot (30) of piston (3) tip-end-side, outside air is imported or derives the air vent (2) of gear-box inside;
When the air pressure of external environment condition is less than the oil-air pressure of gear-box inside, the vent (41) at piston (3) upwards shutoff inner groovy (40) top leaks to prevent oil gas;
Vent hood (4) is provided with the double layer construction of inside and outside cover, is formed and import to gear-box the filter layer (45) arranging impurity screening in the honeycomb duct (44) of air between inner sleeve (42) and overcoat (43).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110121693.6A CN102777576B (en) | 2011-05-11 | 2011-05-11 | Gearbox with floating ventilation device and use method of gearbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110121693.6A CN102777576B (en) | 2011-05-11 | 2011-05-11 | Gearbox with floating ventilation device and use method of gearbox |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102777576A CN102777576A (en) | 2012-11-14 |
| CN102777576B true CN102777576B (en) | 2015-01-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110121693.6A Active CN102777576B (en) | 2011-05-11 | 2011-05-11 | Gearbox with floating ventilation device and use method of gearbox |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3006737B1 (en) * | 2013-06-05 | 2015-06-26 | Peugeot Citroen Automobiles Sa | DEVICE FOR THE OPENING OF A MOTOR VEHICLE GEARBOX |
| JP2017002973A (en) * | 2015-06-09 | 2017-01-05 | 東洋電機製造株式会社 | Rail vehicle gear |
| JP6563698B2 (en) * | 2015-06-09 | 2019-08-21 | 東洋電機製造株式会社 | Railway vehicle gear system |
| JP6397528B2 (en) * | 2017-03-14 | 2018-09-26 | 本田技研工業株式会社 | Transmission structure |
| CN110792759B (en) * | 2019-11-04 | 2021-03-16 | 安徽江淮汽车集团股份有限公司 | Normally open type speed changer ventilation plug |
| CN113446383A (en) * | 2021-07-16 | 2021-09-28 | 中车太原机车车辆有限公司 | Gearbox ventilation device and gearbox |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102374279A (en) * | 2010-08-05 | 2012-03-14 | 东洋电机制造株式会社 | Gear device for electric motor |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59226780A (en) * | 1983-06-08 | 1984-12-19 | Honda Motor Co Ltd | Breather device for gear case |
| JP2005069464A (en) * | 2003-08-07 | 2005-03-17 | Toyota Motor Corp | Valve opened for atmosphere and breather plug structure |
| JP2008106792A (en) * | 2006-10-23 | 2008-05-08 | Toyota Motor Corp | Breather plug |
| JP2009293695A (en) * | 2008-06-05 | 2009-12-17 | Toyota Motor Corp | Breather device |
| JP2010014235A (en) * | 2008-07-04 | 2010-01-21 | Ｇｋｎ ドライブライン トルクテクノロジー株式会社 | Breather mounting structure and power transmission device |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102374279A (en) * | 2010-08-05 | 2012-03-14 | 东洋电机制造株式会社 | Gear device for electric motor |
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| CN102777576A (en) | 2012-11-14 |
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Owner name: CHINA RAILWAY CORPORATION Free format text: FORMER OWNER: TRANSPORT BUREAU OF RAILWAY DEPARTMENT Effective date: 20140924 |
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| C41 | Transfer of patent application or patent right or utility model | ||
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Effective date of registration: 20140924 Address after: 100844 Fuxing Road, Beijing, Haidian District, No. 10 Applicant after: CHINA RAILWAY CORPORATION Applicant after: CSR Qingdao Sifang Locomotive and Rolling Stock Co., Ltd. Address before: 100844 Fuxing Road, Beijing, Haidian District, No. 10 Applicant before: Transport Bureau of Railway Department Applicant before: CSR Qingdao Sifang Locomotive and Rolling Stock Co., Ltd. |
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Address after: 100844 Fuxing Road, Beijing, Haidian District, No. 10 Patentee after: CHINA RAILWAY CORPORATION Patentee after: CRRC QINGDAO SIFANG CO., LTD. Address before: 100844 Fuxing Road, Beijing, Haidian District, No. 10 Patentee before: CHINA RAILWAY CORPORATION Patentee before: CSR Qingdao Sifang Locomotive and Rolling Stock Co., Ltd. |