CN113357347A - Exhaust device and rail vehicle - Google Patents
Exhaust device and rail vehicle Download PDFInfo
- Publication number
- CN113357347A CN113357347A CN202110831164.9A CN202110831164A CN113357347A CN 113357347 A CN113357347 A CN 113357347A CN 202110831164 A CN202110831164 A CN 202110831164A CN 113357347 A CN113357347 A CN 113357347A
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- Prior art keywords
- valve port
- port
- exhaust
- floating
- branch pipe
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- 239000012530 fluid Substances 0.000 claims abstract description 48
- 238000004891 communication Methods 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims description 6
- 230000000903 blocking effect Effects 0.000 claims description 2
- 239000007788 liquid Substances 0.000 abstract description 33
- 239000010687 lubricating oil Substances 0.000 description 19
- 239000006260 foam Substances 0.000 description 10
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 230000003254 anti-foaming effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K24/00—Devices, e.g. valves, for venting or aerating enclosures
- F16K24/04—Devices, e.g. valves, for venting or aerating enclosures for venting only
-
- 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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K24/00—Devices, e.g. valves, for venting or aerating enclosures
- F16K24/04—Devices, e.g. valves, for venting or aerating enclosures for venting only
- F16K24/042—Devices, e.g. valves, for venting or aerating enclosures for venting only actuated by a float
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Details Of Gearings (AREA)
Abstract
The invention discloses an exhaust device and a railway vehicle, wherein a floating core arranged in the exhaust device can be separated from a first valve port under the action of gas and liquid buoyancy, when no liquid flows to a floating cavity from the first valve port or little liquid flows, and the gas pressure is enough to lean against a floating plug to move, the floating plug acts to connect a communication pipeline of a second valve port and a third valve port, so that the gas flowing out of the first valve port can flow to the second fluid port along the second valve port, the third valve port and a corresponding pipeline to flow to the external environment. When more liquid overflows from the first valve port, the floating core rises to abut against the second valve port to block the channel, so that the liquid overflowing from the first valve port cannot overflow to the outside of the exhaust device.
Description
Technical Field
The invention relates to the technical field, in particular to an exhaust device and a railway vehicle.
Background
Gear boxes (reduction boxes, gearboxes, transmission boxes and the like) are mechanical equipment for transmitting power and carrying out speed conversion through gear engagement, and are widely applied to various large-scale mechanical equipment such as rail transit, automobiles, airplanes, ships, machine tools and the like. The gear box generally uses lubricating oil to carry out gear meshing lubrication and heat dissipation, when the gear box works, the internal temperature and pressure are increased, if the pressure is not released, the gear box easily causes failures such as box body rupture and the like because of bearing excessive pressure, and therefore most gear boxes are provided with exhaust devices. The role of the exhaust generally includes: release gear box internal pressure, avoid gear box lubricating oil to leak and avoid external sand and dust moisture to get into gear box etc..
At present, most of gear box exhaust devices adopt structural modes such as a labyrinth channel, an air filter element, a liquid floating plug and the like, but faults such as oil leakage, water inflow and the like of the gear box still occur frequently.
Therefore, how to improve the reliability of the gearbox exhaust device is a technical problem that those skilled in the art are always concerned about.
Disclosure of Invention
The invention aims to provide an exhaust device which improves the use reliability of an exhaust device of a gear box. Another object of the present invention is to provide a rail vehicle comprising the above exhaust apparatus.
The invention provides an exhaust device, which comprises a channel, a floating core and an exhaust plug, wherein the channel can be communicated with a first fluid port and a second fluid port, at least a first valve port, a second valve port and a third valve port are arranged on the channel along an exhaust direction, the floating core is arranged in a floating cavity between the first valve port and the second valve port in a reciprocating floating mode, and the floating core can be abutted and sealed with the first valve port and the second valve port;
when the pressure at the second valve port position is lower than a preset pressure, the exhaust plug is positioned between the second valve port and the third valve port and cuts off a communication pipeline between the second valve port and the third valve port; when the pressure at the second valve port position is greater than or equal to the predetermined pressure, a pipeline between the second valve port and the third valve port is in a communication state.
The floating core provided by the invention can be separated from the first valve port under the action of gas and liquid buoyancy, when no liquid flows to the floating cavity from the first valve port or little liquid flows, and when the gas pressure is enough to lean against the floating plug to move, the floating plug acts to connect the communication pipeline of the second valve port and the third valve port, so that the gas flowing out of the first valve port can flow to the second fluid port along the second valve port, the third valve port and the corresponding pipeline so as to flow to the external environment. When more liquid overflows from the first valve port, the floating core rises to abut against the second valve port to block the channel, so that the liquid overflowing from the first valve port cannot overflow to the outside of the exhaust device.
Optionally, the valve further comprises a spring, and under the action of the spring, the exhaust plug is located between the second valve port and the third valve port and isolates a communication pipeline of the second valve port and the third valve port in a normal state; when the second port position pressure is greater than or equal to the predetermined pressure, the vent plug compresses or stretches the spring to move out of the conduit between the second port and the third port.
Optionally, the valve further comprises a third fluid port, and when the pressure at the second valve port is lower than the predetermined pressure, the second fluid port is communicated with the third fluid port through the third valve port; when the pressure at the second valve port position is greater than or equal to the predetermined pressure, the exhaust plug is positioned between the third valve port and the third fluid port to isolate the communication pipeline of the third valve port and the third fluid port.
Optionally, the exhaust body is included, the passage is partially disposed inside the exhaust body and partially disposed on a wall of the gearbox casing, and the second valve port, the second fluid port, the third valve port and the third fluid port are disposed on an outer surface of the exhaust body; the outer surface of the gearbox box body wall is provided with a concave cavity with an outward opening, the concave cavity wall is provided with the first valve port, the floating cavity is defined between the concave cavity and the exhaust main body, and the first fluid port is arranged on the inner surface of the gearbox box body wall.
Optionally, the exhaust main body includes a main pipe body and a first branch pipe extending outwards from the main pipe body, the vent plug is slidably disposed in an inner cavity of the main pipe body, a root portion of the first branch pipe communicated with the main pipe body forms the third valve port, the first branch pipe is further sleeved with a cover cap, a labyrinth passage is defined between an inner wall of the cover cap and an outer wall of the first branch pipe, the second fluid port is formed between an opening end of the cover cap and the first branch pipe, and a filter element is further filled in a local position of the labyrinth passage.
Optionally, the second valve port and the third fluid port are respectively arranged on two sides of the fourth valve port.
Optionally, a second branch pipe and a third branch pipe which can both communicate with the inner cavity of the main pipe are respectively arranged at two ends of the main pipe, an outlet of the second branch pipe forms the second valve port, an outlet of the third branch pipe forms the third fluid port, and a part of pipe section of the third branch pipe is filled with a filter component.
Optionally, from inside to outside, the channel located in the wall of the gearbox housing includes a cavity, an inclined pipe section and a vertical pipe section, and a mesh material plug is arranged inside the vertical pipe section.
Optionally, the cavity is a tapered structure, and the cross section of the tapered structure gradually decreases from the outside to the inside.
In addition, the invention also provides a railway vehicle which comprises a gear box and the exhaust device.
Drawings
FIG. 1 is a schematic view of an exhaust apparatus according to an embodiment of the present invention;
FIG. 2 is an enlarged view of a portion of the floating core closing the first valve port in one embodiment of the present invention;
fig. 3 is an enlarged view of a portion of one embodiment of the present invention with the floating core in a closed position closing the second valve port.
Wherein, the one-to-one correspondence between each reference number and the part name in fig. 1 to 3
The following were used:
1-gearbox body wall, 2-inclined pipe section, 3-reticular material plug, 4-floating core, 5-exhaust main body, 6-working chamber, 7-exhaust plug, 8-hood, 9-first branch pipe, 10-filter element, 11-spring, 12-third branch pipe, and 13-filter component; a-first fluid port, b-second fluid port, c-third fluid port, a 1-first port, a 2-second port, a 3-third port.
Detailed Description
In the background art, the gear box ventilation device is not designed by fully considering the internal working state (lubricating oil, lubricating oil foam and oil-gas mixed state) of the gear box, and meanwhile, a single ventilation pipeline cannot effectively prevent external moisture from entering the gear box.
On the basis of the above findings, intensive studies are carried out herein to propose a new technical solution to the above technical problems.
In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1 to 3, fig. 1 is a schematic structural diagram of an exhaust device according to an embodiment of the present invention; FIG. 2 is an enlarged view of a portion of the floating core closing the first valve port in one embodiment of the present invention; fig. 3 is an enlarged view of a portion of one embodiment of the present invention with the floating core in a closed position closing the second valve port.
The exhaust device comprises a channel which can be communicated with a first fluid port a and a second fluid port b, and at least a first valve port a1, a second valve port a2 and a third valve port a3 are arranged on the channel along an exhaust direction, wherein the exhaust direction refers to the direction from a box inner cavity needing to be exhausted to the external environment.
The exhaust channel of the invention also comprises a floating core 4 and an exhaust plug 7, under the action of liquid buoyancy, the floating core 4 reciprocally floats a floating cavity arranged between the first valve port a1 and the second valve port a2, and the floating core 4 can be abutted and blocked with the first valve port a1 and the second valve port a 2; that is to say, the floating core 4 has a structure capable of being abutted by the first valve port a1 and the second valve port a2, and the specific structures of the floating core 4 and the vent plug 7 can be in various forms, which is not described in detail herein.
When the gas overflows from the position of the first valve port a1, the floating core 4 is lifted away from the first valve port a1 under the action of the gas pressure, the gas overflows from the first valve port a1, and when the pressure at the position of the second valve port a2 is lower than the preset pressure, the exhaust plug 7 is positioned between the second valve port a2 and the third valve port a3 and blocks the communication pipeline between the second valve port a2 and the third valve port a 3; when the pressure at the position of the second valve port a2 is greater than or equal to the predetermined pressure, the pipeline between the second valve port a2 and the third valve port a3 is in a communication state.
When the first valve port a1 has liquid, the floating core 4 will be separated from the first valve port a1 under the floating action of the liquid, the more the liquid, the farther the floating valve is from the first valve port a1, the closer the floating valve is to the second valve port a2, when the floating cavity is substantially filled with the liquid, the floating valve blocks the second valve port a2, and the liquid is sealed in the channel inside the second valve port a2 and cannot overflow to the outside of the second fluid port b.
The floating core 4 provided by the invention can be separated from the first valve port a1 under the action of gas and liquid buoyancy, when no liquid flows to the floating cavity from the first valve port a1 or little liquid flows, and when the gas pressure is enough to move against the floating plug, the floating plug acts as a communication pipeline for communicating the second valve port a2 and the third valve port a3, so that the gas flowing out from the first valve port a1 can flow to the second fluid port b along the second valve port a2, the third valve port a3 and corresponding pipelines to flow to the external environment. When a relatively large amount of liquid overflows from the first port a1, the floating core 4 will rise to abut against the second port a2 to block the passage, so that the liquid overflowing from the first port a1 does not overflow to the outside of the exhaust device.
Taking the exhaust device applied to the gear box as an example, the gear box can be roughly divided into the following states:
(1) the internal and external pressure of the gear box is balanced or the external pressure of the gear box is greater than the internal pressure of the gear box
This condition generally occurs when the gearbox is not in operation or just started, and the vent plug 7 is in a position for blocking the communication between the second valve port a2 and the third valve port a3, and the inside and the outside of the gearbox are completely isolated by the vent plug 7.
(2) The internal pressure of the gear box is higher than the external pressure, and no lubricating oil or foam enters the special-shaped pipeline
This condition typically occurs when the gearbox is stopped or paused, wherein the vent plug 7 moves the conduit between the second port a2 and the third port a3, and pressurized gas within the gearbox exits the internal chamber of the gearbox through a passage.
(3) The pressure inside the gear box is higher than the external pressure, and the lubricating oil enters the inside of the channel
This state generally occurs when the gearbox is running at low speed or when the gearbox is working normally using lubricating oil with better anti-foaming performance, and at this time, the floating core 4 is lifted by the lubricating oil to the second valve port a2, so as to avoid the leakage of the lubricating oil in the gearbox. And high-pressure gas rises to the floating cavity through the pipeline in a bubble mode, when the gas in the floating cavity is more, the floating core 4 cannot be completely floated and blocks the first valve port a1, the high-pressure gas can enter a subsequent working channel to push the exhaust plug 7 to move leftwards, and the high-pressure gas is discharged through the channel. After the pressure is released, the air exhaust plug 7 returns to the initial position, and when liquid continues to enter the floating cavity, the floating core 4 can be floated again to prevent lubricating oil inside the gearbox from leaking. When more liquid continuously enters the floating cavity, the floating core 4 is in a floating position most of the time in the case, the high-pressure gas is intermittently discharged, and the high-pressure gas is discharged each time along with the descending of the floating core 4; when only a small amount of liquid enters the floating cavity, the floating core 4 is in the position of the first valve port a1 most of the time, as shown in fig. 2, high-pressure gas is continuously discharged, the gas is discharged only when the floating core 4 is floated by the liquid, and the floating core 4 blocks the working cavity 6 of the ventilating device, so that the lubricating oil is prevented from leaking.
In a specific embodiment, the exhaust device may further include a spring 11, and under the action of the spring 11, the exhaust plug 7 is normally located between the first valve port a1 and the third valve port a3 and blocks the communication pipeline of the two; when the pressure at the second port a2 position is greater than or equal to the predetermined pressure, the vent plug 7 compresses or stretches the spring 11 to move out of the conduit between the second port a2 and the third port a 3.
The spring 11 may be a columnar spring 11, but may be a spring 11 having another shape.
In one embodiment, the exhaust device further comprises a third fluid port c, and when the pressure at the position of the second valve port a2 is lower than a predetermined pressure, the second fluid port b is communicated with the third fluid port c through the third valve port a 3; when the pressure at the position of the second valve port a2 is greater than or equal to the predetermined pressure, the vent plug 7 is located between the third valve port a3 and the third fluid port c to block the communication pipeline between the two.
Thus, when the second fluid port b enters liquid, the liquid can be discharged from the third fluid port c, and the external liquid medium is prevented from entering the interior of the gear box.
In one embodiment, the exhaust device may comprise an exhaust body 5, the channel is partially arranged inside the exhaust body 5 and partially arranged on the gearbox housing wall 1, and the outer surface of the exhaust body 5 is provided with a second valve port a2, a second fluid port b, a third valve port a3 and a third fluid port c; the outer surface of the gearbox casing wall 1 is provided with a concave cavity with an outward opening, the concave cavity wall is provided with a first valve port a1, a floating cavity is enclosed between the concave cavity and the exhaust main body 5, and the first fluid port a is arranged on the inner surface of the gearbox casing wall 1.
In the embodiment, the channel for communicating the interior of the gearbox with the outside is divided into two parts, one part is positioned on the wall 1 of the gearbox body, and the other part is positioned on the exhaust main body 5, so that the forming difficulty of the channel can be reduced.
In one embodiment, the exhaust main body 5 may include a main pipe body and a first branch pipe 9 extending outwards from the main pipe body, the vent plug 7 is slidably disposed in an inner cavity of the main pipe body, a third valve port a3 is formed at a root of the first branch pipe 9 communicating with the main pipe body, the first branch pipe 9 is further sleeved with a hood 8, a labyrinth passage is defined between an inner wall of the hood 8 and an outer wall of the first branch pipe 9, a second fluid port b is formed between an open end of the hood 8 and the first branch pipe 9, and a part of the labyrinth passage is further filled with the filter element 10.
The labyrinth passage can increase the gas flow path to a certain extent in the above-mentioned embodiment to the filter core is favorable to filtering the interior gas oil gas of passageway.
The second valve port a2 and the third fluid port c of the exhaust device in each of the above embodiments are disposed on both sides of the fourth valve port.
Specifically, in the above embodiment, the two ends of the main tube are respectively provided with the second branch tube and the third branch tube 12 which can be communicated with the inner cavity of the main tube, the outlet of the second branch tube forms the second valve port a2, the outlet of the third branch tube 12 forms the third fluid port c, and the third branch tube 12 is partially filled with the filter component.
The exhaust body 5 of the above embodiment is simple in structure, and the filter member can not only filter the liquid flowing out of the main pipe but also prevent the external liquid from entering to some extent.
In the above embodiment, from the inside to the outside, the channel located in the gearbox housing wall 1 includes a cavity, an inclined tube section 2 and a vertical tube section, and a mesh material plug 3 is arranged inside the vertical tube section.
The internal pressure of the gearbox is higher than the external pressure, lubricating oil and foam can enter the channel, the state generally occurs in the working condition when the gearbox runs at high speed, at the moment, the lubricating oil is stirred by the gears running at high speed and splashes into foam, and the foam and the lubricating oil liquid are mixed to enter the channel of the gearbox casing wall 1. After foam and lubricating oil got into the passageway, because the action of gravity, the foam generally was located the lubricating oil top, and the reticular material stopper 3 can be fine at this moment eliminates lubricating oil foam and becomes liquid, and this kind of operating mode has just agreed with breather operating condition under the above-mentioned third kind operating mode like this. It should be noted that if the mesh material plug 3 is not provided, the floating core 4 cannot float after the lubricating oil foam enters the cavity opening, and the foam enters the pipe section behind the second valve port a2 and is discharged out of the gear box through the second fluid port b on the exhaust main body 5 along with the action of the exhaust plug 7, thereby causing the lubricating oil to leak.
The cavity of the exhaust device in each of the above embodiments may be a tapered structure, and the cross section of the tapered structure gradually decreases from the outside to the inside.
In addition, the invention also provides a railway vehicle which comprises a gear box and the exhaust device of any one of the embodiments.
The rail vehicle of the present invention has the above-described exhaust device, and therefore, the rail vehicle also has the above-described technical effects of the exhaust device.
The exhaust device and the rail vehicle provided by the invention are described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (10)
1. An exhaust device, comprising a channel capable of communicating a first fluid port and a second fluid port, wherein the channel at least comprises a first valve port, a second valve port and a third valve port along an exhaust direction, and further comprises a floating core and an exhaust plug, wherein the floating core is arranged in a floating cavity between the first valve port and the second valve port in a reciprocating floating mode, and the floating core can be abutted and sealed with the first valve port and the second valve port;
when the pressure at the second valve port position is lower than a preset pressure, the exhaust plug is positioned between the second valve port and the third valve port and cuts off a communication pipeline between the second valve port and the third valve port; when the pressure at the second valve port position is greater than or equal to the predetermined pressure, a pipeline between the second valve port and the third valve port is in a communication state.
2. The exhaust apparatus as claimed in claim 1, further comprising a spring, under normal conditions, said plug being positioned between said second valve port and said third valve port and blocking the communication conduit therebetween; when the second port position pressure is greater than or equal to the predetermined pressure, the vent plug compresses or stretches the spring to move out of the conduit between the second port and the third port.
3. The exhaust apparatus of claim 2, further comprising a third fluid port through which the second fluid port communicates with the third fluid port when the second valve port position pressure is below a predetermined pressure; when the pressure at the second valve port position is greater than or equal to the predetermined pressure, the exhaust plug is positioned between the third valve port and the third fluid port to isolate the communication pipeline of the third valve port and the third fluid port.
4. The exhaust device according to claim 3, comprising an exhaust body, wherein the channel is partially disposed inside the exhaust body and partially disposed on a wall of a gearbox housing, and wherein an outer surface of the exhaust body is provided with the second valve port, the second fluid port, the third valve port, and the third fluid port; the outer surface of the gearbox box body wall is provided with a concave cavity with an outward opening, the concave cavity wall is provided with the first valve port, the floating cavity is defined between the concave cavity and the exhaust main body, and the first fluid port is arranged on the inner surface of the gearbox box body wall.
5. The exhaust device according to claim 4, wherein the exhaust main body comprises a main pipe body and a first branch pipe extending outwards from the main pipe body, the vent plug is slidably disposed in an inner cavity of the main pipe body, a root of the first branch pipe, which is communicated with the main pipe body, forms the third valve port, the first branch pipe is further sleeved with a cover cap, a labyrinth passage is defined between an inner wall of the cover cap and an outer wall of the first branch pipe, the second fluid port is formed between an open end of the cover cap and the first branch pipe, and a filter element is further filled in a local position of the labyrinth passage.
6. The exhaust device according to claim 5, wherein the second valve port and the third fluid port are disposed on opposite sides of the fourth valve port.
7. The exhaust apparatus as claimed in claim 5, wherein the main pipe body is provided at both ends thereof with a second branch pipe and a third branch pipe, respectively, both of which are capable of communicating with the inner cavity thereof, the outlet of the second branch pipe forms the second valve port, the outlet of the third branch pipe forms the third fluid port, and a part of the third branch pipe is filled with a filter member.
8. An exhaust device according to any one of claims 5 to 7, wherein the passage in the wall of the gearbox housing from the inside outwards comprises a cavity, an oblique pipe section and a vertical pipe section, the vertical pipe section being internally provided with a plug of mesh material.
9. An exhaust device according to any one of claims 5 to 7, wherein the cavity is of conical configuration, the conical configuration tapering in cross-section from the outside inwards.
10. A rail vehicle comprising a gearbox, characterized in that it further comprises an exhaust device according to any of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110831164.9A CN113357347A (en) | 2021-07-22 | 2021-07-22 | Exhaust device and rail vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110831164.9A CN113357347A (en) | 2021-07-22 | 2021-07-22 | Exhaust device and rail vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113357347A true CN113357347A (en) | 2021-09-07 |
Family
ID=77540103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110831164.9A Pending CN113357347A (en) | 2021-07-22 | 2021-07-22 | Exhaust device and rail vehicle |
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| CN (1) | CN113357347A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007327620A (en) * | 2006-06-09 | 2007-12-20 | Toyota Motor Corp | Air ventilating construction of engaging device |
| JP2008106792A (en) * | 2006-10-23 | 2008-05-08 | Toyota Motor Corp | Breather plug |
| CN102358279A (en) * | 2011-09-01 | 2012-02-22 | 李旭 | Seeper-proof trailer brake valve |
| CN203189691U (en) * | 2013-03-25 | 2013-09-11 | 南车戚墅堰机车车辆工艺研究所有限公司 | Gearbox ventilator |
| CN104314888A (en) * | 2014-10-29 | 2015-01-28 | 神华集团有限责任公司 | Breather and oil tank |
| US20190271384A1 (en) * | 2018-03-01 | 2019-09-05 | GM Global Technology Operations LLC | Transmission pressure controlled vent system |
-
2021
- 2021-07-22 CN CN202110831164.9A patent/CN113357347A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007327620A (en) * | 2006-06-09 | 2007-12-20 | Toyota Motor Corp | Air ventilating construction of engaging device |
| JP2008106792A (en) * | 2006-10-23 | 2008-05-08 | Toyota Motor Corp | Breather plug |
| CN102358279A (en) * | 2011-09-01 | 2012-02-22 | 李旭 | Seeper-proof trailer brake valve |
| CN203189691U (en) * | 2013-03-25 | 2013-09-11 | 南车戚墅堰机车车辆工艺研究所有限公司 | Gearbox ventilator |
| CN104314888A (en) * | 2014-10-29 | 2015-01-28 | 神华集团有限责任公司 | Breather and oil tank |
| US20190271384A1 (en) * | 2018-03-01 | 2019-09-05 | GM Global Technology Operations LLC | Transmission pressure controlled vent system |
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Application publication date: 20210907 |
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