CN107339408B - Gearbox ventilation device and application method thereof - Google Patents
Gearbox ventilation device and application method thereof Download PDFInfo
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- CN107339408B CN107339408B CN201710570491.7A CN201710570491A CN107339408B CN 107339408 B CN107339408 B CN 107339408B CN 201710570491 A CN201710570491 A CN 201710570491A CN 107339408 B CN107339408 B CN 107339408B
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- cavity
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- upper cover
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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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- General Engineering & Computer Science (AREA)
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- General Details Of Gearings (AREA)
Abstract
The ventilation device of the gearbox comprises an upper cover, a middle cavity, a neck cavity, a spacer, a first interface and a second interface, wherein the volume of the middle cavity in the middle cavity is larger than that of the neck cavity in the neck cavity; the external gas is communicated with the main gearbox through the neck cavity, the middle shaft hole and the first interface in sequence so as to exchange gas; the cleaning air source is communicated with the middle cavity after passing through the second interface, the upper cavity and the partition plate holes in sequence so as to clean impurities. This design not only can prevent along with the less impurity of exotic gas concurrent flow, prevents that the effect of impurity is better, can initiatively clear up the impurity moreover, easily uses, and application scope is wider.
Description
Technical Field
The utility model relates to a part for a gearbox, belongs to the field of parts for vehicles, and particularly relates to a gearbox ventilation device and a use method thereof, which are particularly suitable for improving the impurity blocking effect.
Background
The prior breather plug of the gearbox is mainly used for maintaining lubricating oil of various elements of the gearbox and ensuring air pressure balance between the interior of the gearbox and the external environment. The interior of the gearbox contains lubricating oil and gas in addition to the various parts. With the increase or decrease of the temperature of the components in the gearbox and the temperature of the gearbox lubricating oil, the volume of the gas in the gearbox also changes, and the temperature range is typically-40 ℃ to +120 ℃. Because the interior of the gearbox is not easily sealed, either at high or low pressure, it is necessary to place the interior and exterior of the gearbox in gaseous communication to balance the air pressure. A vent plug is typically used to maintain the internal and external air pressure balance of the transmission at a location near the top of the transmission. However, during ventilation, some dust and impurities can enter the gearbox through the air passage, so that the bearings, gears, friction pair surfaces, sealing elements and the like are damaged.
The patent of the utility model with the authority notice number of CN205089948U and the authority notice day of 2016 of 3 month of 6 discloses a gearbox breather plug, a gearbox breather plug mounting structure and a gearbox, wherein, the gearbox breather plug includes a breather plug cover and a breather plug body, the breather plug cover is detained the upper end of the breather plug body, the breather plug body middle part is provided with the ring flange, the inside of the breather plug body sets up the open vent pipe in upper and lower both ends, be provided with first oil baffle and the second oil baffle of crisscross from top to bottom in the vent pipe, the roof inboard and the lateral wall inboard of breather plug cover are provided with top strengthening rib and lateral part strengthening rib respectively, the top surface of the upper end of the breather plug body with top strengthening rib in close contact with, the side of the upper end of the breather plug body with lateral part strengthening rib in close contact with, be formed with between top strengthening rib, lateral part strengthening rib and the breather plug body with the vent pipe and external intercommunication. Although the design can realize the ventilation function of the gearbox and prevent external impurities and accumulated water from entering, the gearbox still has the following defects:
the design focuses on the fact that the gas flow direction in the gearbox flows outwards rather than how the external gas flows into the gearbox, so that the external impurity entering prevention structural design is that the ventilation plug cover is used for directly preventing the external impurity, and the design can only prevent the impurity with larger volume but cannot prevent the smaller impurity flowing along with the external gas, so that the effect of preventing the impurity is poor.
The disclosure of this background section is only intended to increase the understanding of the general background of the present patent application and should not be taken as an admission or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art.
Disclosure of Invention
The utility model aims to overcome the defects and problems in the prior art that smaller impurities which flow along with the external gas are difficult to block and the effect of blocking the impurities is poor, and provides a gearbox ventilation device capable of blocking the smaller impurities which flow along with the external gas and good in effect and a using method thereof.
In order to achieve the above object, the technical solution of the present utility model is: the ventilation device of the gearbox comprises an upper cover and a main cavity, wherein one end of the upper cover is communicated with the main gearbox through a first interface, and the other end of the upper cover is communicated with the atmosphere through the main cavity;
the main cavity comprises a middle cavity and a neck cavity which are connected with each other, the upper cover, the middle cavity and the neck cavity are all vertically arranged, and the inner parts of the upper cover, the middle cavity and the neck cavity are correspondingly provided with a through upper cavity, a through middle cavity and a through neck cavity one by one;
the top of upper cover is connected with the bottom of interface, and the bottom of upper cover is connected with the top of neck cavity through well cavity, and the bottom of neck cavity is located in the atmosphere, and the atmosphere communicates with each other with the gearbox main tank after neck cavity, well cavity, upper chamber, interface in proper order, and the volume of well cavity is greater than the volume of neck cavity.
The neck cavity is of a flat structure, the middle cavity comprises a cylindrical cavity and a conical cavity which are communicated, the neck cavity is communicated with the upper cavity after passing through the conical cavity and the cylindrical cavity in sequence, and the volumes of the cylindrical cavity and the conical cavity are larger than the volume of the neck cavity.
The top of the first interface is communicated with the main gearbox through a first air pipe and a pipe joint in sequence.
The top of the upper cover is provided with a clamp, a limiting boss and a positioning threaded hole; the limiting boss is higher than the top surface of the upper cover, and is in inserted connection with a limiting hole formed in the upper bracket of the main gearbox; the locating threaded hole is formed in the upper cover, and is connected with a locating hole formed in the support through a locating bolt.
The gearbox ventilation device further comprises a second interface and a spacer, the side wall of the upper cover is communicated with a cleaning air source after passing through the second interface and the second air pipe in sequence, the bottom of the top surface of the upper cover is connected with the top end of the inner lower shaft, a through center shaft hole is formed in the inner lower shaft, the bottom end of the inner lower shaft penetrates through the middle of the spacer and extends into the middle cavity, the outer edge of the spacer is connected with the junction of the upper cover and the middle cavity, at least two spacer holes are formed in the position, surrounding the junction of the spacer and the inner lower shaft, of the spacer, the spacer holes are communicated with the upper cavity and the middle cavity, and the middle cavity is communicated with the main gearbox after passing through the center shaft hole and the first interface in sequence.
The number of the partition plate holes is four, and the partition plate holes are uniformly formed along the same circumference.
The bottom edge of upper cover includes lid flat bar and lid vertical bar, and lid vertical bar's top is connected perpendicularly with lid flat bar's bottom surface's middle part, the top edge of well cavity includes well rectangular, well horizontal bar and well short bar, and well horizontal bar's both ends are connected perpendicularly with well rectangular, well short bar's bottom respectively, well rectangular, well horizontal bar, well short bar enclose into an upper shed's well recess altogether, and this well recess cooperates with the lid vertical bar joint of inserting its inside, and well rectangular top contacts with lid flat bar's bottom surface, and lid flat bar inner, lid vertical bar, well short bar enclose the side recess and insert its inside spacer's outward flange joint cooperation altogether.
A method of using the gearbox ventilation device described above, the method of using comprising a gas exchange process;
the gas exchange process refers to: when the external gas in the atmosphere enters the middle cavity from bottom to top through the neck cavity, the speed of the external gas is weakened because the volume of the middle cavity is larger than that of the neck cavity, so that the movement capacity of the impurities in the external gas is reduced, meanwhile, under the action of gravity, the impurities can fall on the inner wall of the middle cavity and cannot flow into the upper cavity, and further cannot flow into the main gearbox, meanwhile, the external gas after the impurities are removed can continue to go upwards, and flows into the main gearbox through the upper cavity and the first interface in sequence to exchange gas with the gas in the gearbox.
The transmission breather also comprises a second interface and a spacer, the side wall of the upper cover is communicated with a cleaning air source after passing through the second interface and the second air pipe in sequence, the bottom of the top surface of the upper cover is connected with the top end of the inner lower shaft, a through center shaft hole is formed in the inner lower shaft, the bottom end of the inner lower shaft penetrates through the middle part of the spacer and extends into the center cavity, the outer edge of the spacer is connected with the junction of the upper cover and the center cavity, at least two spacer holes are formed in the position, surrounding the junction of the spacer and the inner lower shaft, of the spacer, the spacer holes are communicated with the upper cavity and the center cavity, and the center cavity is communicated with the transmission main case after passing through the center shaft hole and the first interface in sequence;
the using method further comprises an impurity cleaning process, wherein the impurity cleaning process refers to: when the impurities left on the inner wall of the middle cavity are required to be cleaned, the cleaning air source and the second interface are conducted, the pressurized air input by the cleaning air source sequentially passes through the second interface, the upper cavity and the spacer holes and then enters the middle cavity, and the pressurized air accelerated by the spacer holes blows the impurities on the inner wall of the middle cavity downwards so as to blow out the main cavity.
The cleaning air source is a pressure air source of the top cover control valve; the impurity cleaning process comprises the following steps: when shifting gears, the top cover control valve is opened, a pressure air source of the top cover control valve is connected, pressurized air input by the pressure air source sequentially passes through the top cover control valve, the second air pipe, the second interface, the upper cavity and the spacer holes and then enters the middle cavity, and the pressurized air accelerated by the spacer holes blows impurities on the inner wall of the middle cavity downwards to blow out the main cavity; the cleaning frequency of the impurity cleaning process is proportional to the gear shifting frequency.
Compared with the prior art, the utility model has the beneficial effects that:
1. the utility model relates to a gearbox ventilation device and a use method thereof, wherein the gearbox ventilation device comprises an upper cover, a middle cavity and a neck cavity which are all vertically arranged, the upper cover, the middle cavity and the neck cavity are sequentially arranged from top to bottom, the atmosphere is communicated with a gearbox main box after passing through the neck cavity, the middle cavity, the upper cavity and a first interface in sequence, the flow direction of external gas is from bottom to top, the movement capacity of small impurities flowing along with the external gas is reduced through the volume difference of the neck cavity and the middle cavity, and meanwhile, under the action of gravity, the impurities fall on the inner wall of the middle cavity and cannot flow into the upper cavity or the gearbox main box, so that the effect of preventing the impurities is achieved. Therefore, the utility model can prevent smaller impurities flowing along with the external gas, and has better effect of preventing the impurities.
2. According to the gearbox ventilation device and the application method thereof, the neck cavity is preferably of a flat structure, the middle cavity comprises the cylindrical cavity and the conical cavity which are communicated, the volumes of the cylindrical cavity and the conical cavity are larger than those of the neck cavity, when the gearbox ventilation device is used, the neck cavity of the flat structure can not only prevent foreign impurities with larger volumes from entering, but also further reduce the volume of the neck cavity, enlarge the volume difference between the neck cavity and the middle cavity, improve the effect of reducing the motion capability of impurities, and enhance the effect of removing impurities, and particularly, when the volumes of the cylindrical cavity and the conical cavity are both larger than those of the neck cavity, the effect is better. Therefore, the utility model has better effect of preventing impurities.
3. According to the gearbox ventilation device and the application method thereof, the clamp, the limiting boss and the positioning threaded hole are formed in the top of the upper cover, the ventilation device is arranged on the existing gearbox main box, and particularly vertical arrangement of the ventilation device is facilitated. Therefore, the utility model not only has better effect of preventing impurities, but also is beneficial to installation and has wider application range.
4. The utility model relates to a gearbox ventilation device and a use method thereof, the gearbox ventilation device further comprises a second interface and a spacer, wherein the spacer is positioned between an upper cavity and a middle cavity, the side wall of an upper cover is communicated with a cleaning air source after passing through the second interface and a second air pipe in sequence, when impurities which are prevented from falling on the inner wall of the middle cavity are required to be cleaned in use, the cleaning air source is conducted to input pressured air, the pressured air can blow the impurities downwards to blow out the main cavity, and particularly, the pressured air has better effect after being accelerated through spacer holes. Therefore, the utility model can actively clean impurities.
5. According to the gearbox ventilation device and the application method thereof, when the cleaning air source is the pressure air source of the top cover control valve, the operation of cleaning impurities is performed according to a certain frequency, the cleaning frequency is in direct proportion to the gear shifting frequency, the design can improve the cleaning effect of the impurities, the existing equipment is fully utilized, and the application cost is reduced. Therefore, the utility model has the advantages of good effect of actively cleaning impurities, easy application and wide application range.
Drawings
Fig. 1 is a schematic perspective view of the present utility model.
Fig. 2 is a top view of fig. 1.
Fig. 3 is a cross-sectional view of fig. 2 taken along a-a.
Fig. 4 is a side view of fig. 3 in the direction B-B.
Fig. 5 is a bottom view of fig. 3 in the direction C-C.
Fig. 6 is an enlarged schematic view at D in fig. 4.
FIG. 7 is a top view of the present utility model after assembly with a main gearbox.
Fig. 8 is a cross-sectional view of the main chamber of fig. 7.
In the figure: the main cavity 1, the upper cover 2, the upper cavity 21, the clamp 22, the limit boss 23, the locating threaded hole 24, the locating bolt 241, the inner lower shaft 25, the middle shaft hole 251, the cover flat bar 26, the cover vertical bar 27, the middle cavity 3, the middle cavity 31, the cylindrical cavity 311, the conical cavity 312, the middle strip 32, the middle transverse bar 33, the middle short bar 34, the middle groove 35, the side groove 36, the neck cavity 4, the neck cavity 41, the spacer 5, the spacer hole 51, the first interface 6, the first air pipe 61, the pipe joint 62, the second interface 7, the second air pipe 71, the main gearbox 8, the bracket 81, the limit hole 82, the locating hole 83, the top cover control valve 9 and the bamboo joint 10.
Detailed Description
The utility model is described in further detail below with reference to the accompanying drawings and detailed description.
Referring to fig. 1 to 8, a ventilation device for a gearbox comprises an upper cover 2 and a main cavity 1, wherein one end of the upper cover 2 is communicated with a main gearbox 8 through a first interface 6, and the other end of the upper cover 2 is communicated with the atmosphere through the main cavity 1;
the main cavity 1 comprises a middle cavity 3 and a neck cavity 4 which are connected with each other, the upper cover 2, the middle cavity 3 and the neck cavity 4 are all vertically arranged, and the inner parts of the upper cover 2, the middle cavity 3 and the neck cavity 4 are provided with an upper cavity 21, a middle cavity 31 and a neck cavity 41 which are communicated in a one-to-one correspondence manner;
the top of upper cover 2 is connected with the bottom of interface 6, and the bottom of upper cover 2 is connected with the top of neck cavity 4 through well cavity 3, and the bottom of neck cavity 4 is located in the atmosphere, and the atmosphere communicates with each other with gearbox main tank 8 after neck cavity 41, well cavity 31, upper chamber 21, interface 6 in proper order, and the volume of well cavity 31 is greater than the volume of neck cavity 41.
The neck cavity 4 is in a flat structure, the middle cavity 31 comprises a cylindrical cavity 311 and a conical cavity 312 which are communicated, the neck cavity 41 is communicated with the upper cavity 21 after passing through the conical cavity 312 and the cylindrical cavity 311 in sequence, and the volumes of the cylindrical cavity 311 and the conical cavity 312 are larger than the volume of the neck cavity 41.
The top of the first interface 6 is communicated with the main gearbox 8 after passing through a first air pipe 61 and a pipe joint 62 in sequence.
The top of the upper cover 2 is provided with a clamp 22, a limit boss 23 and a positioning threaded hole 24; the limiting boss 23 is higher than the top surface of the upper cover 2, and the limiting boss 23 is connected with a limiting hole 82 formed in an upper bracket 81 of the main gearbox 8 in an inserting way; the positioning threaded hole 24 is provided in the upper cover 2, and the positioning threaded hole 24 is connected with a positioning hole 83 provided in the bracket 81 via a positioning bolt 241.
The gearbox ventilation device further comprises a second interface 7 and a spacer 5, the side wall of the upper cover 2 is communicated with a cleaning air source after passing through the second interface 7 and a second air pipe 71 in sequence, the bottom of the top surface of the upper cover 2 is connected with the top end of the inner lower shaft 25, a through middle shaft hole 251 is formed in the inner lower shaft 25, the bottom end of the inner lower shaft 25 passes through the middle part of the spacer 5 and then extends into the middle cavity 31, the outer edge of the spacer 5 is connected with the junction of the upper cover 2 and the middle cavity 3, at least two spacer holes 51 are formed in the position, surrounding the junction of the spacer 5 and the inner lower shaft 25, of the spacer 5, the spacer holes 51 are communicated with the upper cavity 21 and the middle cavity 31, and the middle cavity 31 is communicated with the gearbox main box 8 after passing through the middle shaft hole 251 and the first interface 6 in sequence.
The number of the spacer holes 51 is four, and are uniformly arranged along the same circumference.
The bottom edge of the upper cover 2 comprises a cover flat bar 26 and a cover vertical bar 27, the top end of the cover vertical bar 27 is vertically connected with the middle part of the bottom surface of the cover flat bar 26, the top edge of the middle cavity 3 comprises a middle strip 32, a middle transverse bar 33 and a middle short bar 34, two ends of the middle transverse bar 33 are vertically connected with the bottom ends of the middle strip 32 and the middle short bar 34 respectively, the middle strip 32, the middle transverse bar 33 and the middle short bar 34 enclose a middle groove 35 with an upper opening, the middle groove 35 is in clamping fit with the cover vertical bar 27 inserted into the middle groove, the top end of the middle strip 32 is contacted with the bottom surface of the outer end of the cover flat bar 26, and a side groove 36 enclosed by the inner end of the cover flat bar 26, the cover vertical bar 27 and the middle short bar 34 is in clamping fit with the outer edge of the spacer 5 inserted into the middle groove.
A method of using the gearbox ventilation device described above, the method of using comprising a gas exchange process;
the gas exchange process refers to: when the external gas in the atmosphere enters the middle cavity 3 from bottom to top through the neck cavity 4, the speed of the external gas is weakened because the volume of the middle cavity 3 is larger than that of the neck cavity 4, so that the movement capability of the impurities in the external gas is reduced, meanwhile, under the action of gravity, the impurities can fall on the inner wall of the middle cavity 3 and cannot flow into the upper cavity 21, and further cannot flow into the main gearbox box 8, and meanwhile, the external gas after the impurities are removed can continue to go upwards and flow into the main gearbox box 8 after sequentially passing through the upper cavity 21 and the first interface 6 so as to exchange gas with the gas in the gearbox box.
The gearbox ventilation device further comprises a second interface 7 and a spacer 5, the side wall of the upper cover 2 is communicated with a cleaning air source after passing through the second interface 7 and a second air pipe 71 in sequence, the bottom of the top surface of the upper cover 2 is connected with the top end of the inner lower shaft 25, a through middle shaft hole 251 is formed in the inner lower shaft 25, the bottom end of the inner lower shaft 25 passes through the middle part of the spacer 5 and then extends into the middle cavity 31, the outer edge of the spacer 5 is connected with the junction of the upper cover 2 and the middle cavity 3, at least two spacer holes 51 are formed in the position, surrounding the junction of the spacer 5 and the inner lower shaft 25, of the spacer 5, the spacer holes 51 are communicated with the upper cavity 21 and the middle cavity 31, and the middle cavity 31 is communicated with the gearbox main box 8 after passing through the middle shaft hole 251 and the first interface 6 in sequence;
the using method further comprises an impurity cleaning process, wherein the impurity cleaning process refers to: when the impurities left on the inner wall of the middle cavity 3 need to be cleaned, a cleaning air source and a second interface 7 are conducted, the pressurized air input by the cleaning air source sequentially passes through the second interface 7, the upper cavity 21 and the spacer holes 51 and then enters the middle cavity 31, and the pressurized air accelerated by the spacer holes 51 blows the impurities on the inner wall of the middle cavity 3 downwards so as to blow out the main cavity 1.
The cleaning air source is a pressure air source of the top cover control valve 9; the impurity cleaning process comprises the following steps: when shifting gears, the top cover control valve 9 is opened, a pressure air source of the top cover control valve 9 is connected, pressurized air input by the pressure air source sequentially passes through the top cover control valve 9, the second air pipe 71, the second interface 7, the upper cavity 21 and the spacer hole 51 and then enters the middle cavity 31, and the pressurized air accelerated by the spacer hole 51 blows impurities on the inner wall of the middle cavity 3 downwards so as to blow out the main cavity 1; the cleaning frequency of the impurity cleaning process is proportional to the gear shifting frequency.
The principle of the utility model is explained as follows:
the process of the gas flow direction in the gearbox to the atmosphere is as follows: oil gas in the gearbox is condensed when flowing through the first gas pipe 61 and flows back into the gearbox, and gas without oil gas can continuously pass through the first gas pipe 61 and flow out through the ventilation device. The purpose of the first air pipe 61 is to prevent oil loss inside the gearbox.
The cleaning air source is the pressure air source of the top cover control valve 9: when shifting gears, the top cover control valve 9 is opened, the pressure air source is connected, meanwhile, the other function of the top cover control valve 9 is to supply air to the front auxiliary cylinder, and the pressure air source of the top cover control valve 9 belongs to an borrowed air source in the design, so that the cost is reduced, and the application range is enlarged.
Bamboo joint 10: the outer ends of the first interface 6 and the second interface 7 are provided with bamboo joints 10, and the bamboo joints 10 are beneficial to the interference fit between the first interface 6 and the second interface 7 and the first air pipe 61 and the second air pipe 71 respectively, so that the air pipe sealing effect is achieved.
Example 1:
referring to fig. 1 to 8, a ventilation device for a gearbox comprises an upper cover 2 and a main cavity 1, wherein one end of the upper cover 2 is communicated with a main gearbox 8 through a first interface 6, and the other end of the upper cover 2 is communicated with the atmosphere through the main cavity 1;
the main cavity 1 comprises a middle cavity 3 and a neck cavity 4 which are connected with each other, the upper cover 2, the middle cavity 3 and the neck cavity 4 are all vertically arranged, and the inner parts of the upper cover 2, the middle cavity 3 and the neck cavity 4 are provided with an upper cavity 21, a middle cavity 31 and a neck cavity 41 which are communicated in a one-to-one correspondence manner; the top of upper cover 2 is connected with the bottom of interface 6, and the bottom of upper cover 2 is connected with the top of neck cavity 4 through well cavity 3, and the bottom of neck cavity 4 is located in the atmosphere, and the atmosphere communicates with each other with gearbox main tank 8 after neck cavity 41, well cavity 31, upper chamber 21, interface 6 in proper order, and the volume of well cavity 31 is greater than the volume of neck cavity 41. Preferably, the neck cavity 4 is in a flat structure, the middle cavity 31 comprises a cylindrical cavity 311 and a conical cavity 312 which are communicated, the neck cavity 41 is communicated with the upper cavity 21 after passing through the conical cavity 312 and the cylindrical cavity 311 in sequence, and the volumes of the cylindrical cavity 311 and the conical cavity 312 are larger than the volume of the neck cavity 41.
A method of using the gearbox ventilation device described above, the method of using comprising a gas exchange process; the gas exchange process refers to: when the external gas in the atmosphere enters the middle cavity 3 from bottom to top through the neck cavity 4, the speed of the external gas is weakened because the volume of the middle cavity 3 is larger than that of the neck cavity 4, so that the movement capability of the impurities in the external gas is reduced, meanwhile, under the action of gravity, the impurities can fall on the inner wall of the middle cavity 3 and cannot flow into the upper cavity 21, and further cannot flow into the main gearbox box 8, and meanwhile, the external gas after the impurities are removed can continue to go upwards and flow into the main gearbox box 8 after sequentially passing through the upper cavity 21 and the first interface 6 so as to exchange gas with the gas in the gearbox box.
Example 2:
the basic content is the same as in example 1, except that:
the top of the first interface 6 is communicated with the main gearbox 8 after passing through a first air pipe 61 and a pipe joint 62 in sequence. The top of the upper cover 2 is provided with a clamp 22, a limit boss 23 and a positioning threaded hole 24; the limiting boss 23 is higher than the top surface of the upper cover 2, and the limiting boss 23 is connected with a limiting hole 82 formed in an upper bracket 81 of the main gearbox 8 in an inserting way; the positioning threaded hole 24 is provided in the upper cover 2, and the positioning threaded hole 24 is connected with a positioning hole 83 provided in the bracket 81 via a positioning bolt 241.
Example 3:
the basic content is the same as in example 1, except that:
the gearbox ventilation device further comprises a second interface 7 and a spacer 5, the side wall of the upper cover 2 is communicated with a cleaning air source after passing through the second interface 7 and a second air pipe 71 in sequence, the bottom of the top surface of the upper cover 2 is connected with the top end of the inner lower shaft 25, a through middle shaft hole 251 is formed in the inner lower shaft 25, the bottom end of the inner lower shaft 25 passes through the middle part of the spacer 5 and then extends into the middle cavity 31, the outer edge of the spacer 5 is connected with the junction of the upper cover 2 and the middle cavity 3, at least two spacer holes 51 are formed in the position, surrounding the junction of the spacer 5 and the inner lower shaft 25, of the spacer 5, the spacer holes 51 are communicated with the upper cavity 21 and the middle cavity 31, and the middle cavity 31 is communicated with the gearbox main box 8 after passing through the middle shaft hole 251 and the first interface 6 in sequence. The number of spacer holes 51 is preferably four and uniformly arranged along the same circumference.
When the impurity cleaning device is used, the using method further comprises an impurity cleaning process, and the impurity cleaning process refers to: when the impurities left on the inner wall of the middle cavity 3 need to be cleaned, a cleaning air source and a second interface 7 are conducted, the pressurized air input by the cleaning air source sequentially passes through the second interface 7, the upper cavity 21 and the spacer holes 51 and then enters the middle cavity 31, and the pressurized air accelerated by the spacer holes 51 blows the impurities on the inner wall of the middle cavity 3 downwards so as to blow out the main cavity 1.
Example 4:
the basic content is the same as in example 3, except that:
the cleaning air source is a pressure air source of the top cover control valve 9;
the impurity cleaning process comprises the following steps: when shifting gears, the top cover control valve 9 is opened, a pressure air source of the top cover control valve 9 is connected, pressurized air input by the pressure air source sequentially passes through the top cover control valve 9, the second air pipe 71, the second interface 7, the upper cavity 21 and the spacer hole 51 and then enters the middle cavity 31, and the pressurized air accelerated by the spacer hole 51 blows impurities on the inner wall of the middle cavity 3 downwards so as to blow out the main cavity 1; the cleaning frequency of the impurity cleaning process is proportional to the gear shifting frequency.
Example 5:
the basic content is the same as in example 1, except that:
the bottom edge of the upper cover 2 comprises a cover flat bar 26 and a cover vertical bar 27, the top end of the cover vertical bar 27 is vertically connected with the middle part of the bottom surface of the cover flat bar 26, the top edge of the middle cavity 3 comprises a middle strip 32, a middle transverse bar 33 and a middle short bar 34, two ends of the middle transverse bar 33 are vertically connected with the bottom ends of the middle strip 32 and the middle short bar 34 respectively, the middle strip 32, the middle transverse bar 33 and the middle short bar 34 enclose a middle groove 35 with an upper opening, the middle groove 35 is in clamping fit with the cover vertical bar 27 inserted into the middle groove, the top end of the middle strip 32 is contacted with the bottom surface of the outer end of the cover flat bar 26, and a side groove 36 enclosed by the inner end of the cover flat bar 26, the cover vertical bar 27 and the middle short bar 34 is in clamping fit with the outer edge of the spacer 5 inserted into the middle groove.
Claims (8)
1. The utility model provides a gearbox breather, includes upper cover (2) and main cavity body (1), the one end of upper cover (2) communicates with each other with gearbox main tank (8) through interface (6), and the other end of upper cover (2) communicates with each other with the atmosphere through main cavity body (1), its characterized in that:
the main cavity (1) comprises a middle cavity (3) and a neck cavity (4) which are connected with each other, the upper cover (2), the middle cavity (3) and the neck cavity (4) are all vertically arranged, and the inner parts of the upper cover (2), the middle cavity (3) and the neck cavity (4) are provided with an upper cavity (21), a middle cavity (31) and a neck cavity (41) which are communicated in a one-to-one correspondence manner;
the top of the upper cover (2) is connected with the bottom of the first interface (6), the bottom of the upper cover (2) is connected with the top of the neck cavity (4) through the middle cavity (3), the bottom of the neck cavity (4) is positioned in the atmosphere, the atmosphere is communicated with the main gearbox (8) after passing through the neck cavity (41), the middle cavity (31), the upper cavity (21) and the first interface (6) in sequence, and the volume of the middle cavity (31) is larger than that of the neck cavity (41);
the gearbox ventilation device further comprises a second interface (7) and a spacer (5), the side wall of the upper cover (2) is communicated with a cleaning air source after passing through the second interface (7) and a second air pipe (71) in sequence, the bottom of the top surface of the upper cover (2) is connected with the top end of an inner lower shaft (25), a through center shaft hole (251) is formed in the inner lower shaft (25), the bottom end of the inner lower shaft (25) passes through the middle part of the spacer (5) and extends into a middle cavity (31), the outer edge of the spacer (5) is connected with the joint of the upper cover (2) and the middle cavity (3), at least two spacer holes (51) are formed in the position, surrounding the joint of the spacer (5) and the inner lower shaft (25), of the spacer holes (51) are communicated with the upper cavity (21) and the middle cavity (31), and the middle cavity (31) is communicated with a gearbox main box (8) after passing through the center shaft hole (251) and the first interface (6) in sequence;
the bottom edge of the upper cover (2) comprises a cover flat bar (26) and a cover vertical bar (27), the top end of the cover vertical bar (27) is vertically connected with the middle part of the bottom surface of the cover flat bar (26), the top edge of the middle cavity (3) comprises a middle strip (32), a middle cross bar (33) and a middle short bar (34), the two ends of the middle cross bar (33) are respectively vertically connected with the bottom ends of the middle strip (32) and the middle short bar (34), the middle strip (32), the middle cross bar (33) and the middle short bar (34) enclose an upper open middle groove (35), the middle groove (35) is in clamping fit with the cover vertical bar (27) inserted into the middle groove, the top end of the middle strip (32) is contacted with the bottom surface of the outer end of the cover flat bar (26), and a side groove (36) enclosed by the inner end of the cover flat bar (26), the cover vertical bar (27) and the middle short bar (34) is in clamping fit with the outer edge of a spacer (5) inserted into the middle groove;
the gearbox ventilation device operates according to the following gas exchange process, wherein the gas exchange process refers to: when the external gas in the atmosphere enters the middle cavity (3) from bottom to top through the neck cavity (4), the speed of the external gas is weakened because the volume of the middle cavity (3) is larger than that of the neck cavity (4), so that the movement capacity of the impurities in the external gas is reduced, meanwhile, under the action of gravity, the impurities can fall on the inner wall of the middle cavity (3) and cannot flow into the upper cavity (21) and further cannot flow into the gearbox main box (8), and meanwhile, the external gas after the impurities are removed can continue to go upwards and sequentially flow into the gearbox main box (8) through the upper cavity (21) and the first interface (6) so as to exchange gas with the gas in the gearbox.
2. A transmission breather as defined in claim 1, wherein: the neck cavity (4) is of a flat structure, the middle cavity (31) comprises a cylindrical cavity (311) and a conical cavity (312) which are communicated, the neck cavity (41) is communicated with the upper cavity (21) after passing through the conical cavity (312) and the cylindrical cavity (311) in sequence, and the volumes of the cylindrical cavity (311) and the conical cavity (312) are larger than the volume of the neck cavity (41).
3. A gearbox ventilation device according to claim 1 or 2, characterized in that: the top of the first interface (6) is communicated with the main gearbox (8) through a first air pipe (61) and a pipe joint (62) in sequence.
4. A gearbox ventilation device according to claim 1 or 2, characterized in that: the top of the upper cover (2) is provided with a clamp (22), a limit boss (23) and a positioning threaded hole (24); the limiting boss (23) is higher than the top surface of the upper cover (2), and the limiting boss (23) is connected with a limiting hole (82) formed in an upper bracket (81) of the main gearbox (8) in an inserting mode; the positioning threaded hole (24) is formed in the upper cover (2), and the positioning threaded hole (24) is connected with a positioning hole (83) formed in the support (81) through a positioning bolt (241).
5. A transmission breather as defined in claim 1, wherein: the number of the spacer holes (51) is four, and the spacer holes are uniformly arranged along the same circumference.
6. A method of using the transmission breather of claim 1, wherein the method of use comprises a gas exchange process;
the gas exchange process refers to: when the external gas in the atmosphere enters the middle cavity (3) from bottom to top through the neck cavity (4), the speed of the external gas is weakened because the volume of the middle cavity (3) is larger than that of the neck cavity (4), so that the movement capacity of the impurities in the external gas is reduced, meanwhile, under the action of gravity, the impurities can fall on the inner wall of the middle cavity (3) and cannot flow into the upper cavity (21) and further cannot flow into the gearbox main box (8), and meanwhile, the external gas after the impurities are removed can continue to go upwards and sequentially flow into the gearbox main box (8) through the upper cavity (21) and the first interface (6) so as to exchange gas with the gas in the gearbox.
7. A method of using a transmission breather device as defined in claim 6, wherein:
the gearbox ventilation device further comprises a second interface (7) and a spacer (5), the side wall of the upper cover (2) is communicated with a cleaning air source after passing through the second interface (7) and a second air pipe (71) in sequence, the bottom of the top surface of the upper cover (2) is connected with the top end of an inner lower shaft (25), a through center shaft hole (251) is formed in the inner lower shaft (25), the bottom end of the inner lower shaft (25) passes through the middle part of the spacer (5) and extends into a middle cavity (31), the outer edge of the spacer (5) is connected with the joint of the upper cover (2) and the middle cavity (3), at least two spacer holes (51) are formed in the position, surrounding the joint of the spacer (5) and the inner lower shaft (25), of the spacer holes (51) are communicated with the upper cavity (21) and the middle cavity (31), and the middle cavity (31) is communicated with a gearbox main box (8) after passing through the center shaft hole (251) and the first interface (6) in sequence;
the using method further comprises an impurity cleaning process, wherein the impurity cleaning process refers to: when the impurities left on the inner wall of the middle cavity (3) need to be cleaned, a cleaning air source and a second interface (7) are conducted, the pressurized air input by the cleaning air source sequentially passes through the second interface (7), the upper cavity (21) and the spacer hole (51) and then enters the middle cavity (31), and the pressurized air accelerated by the spacer hole (51) blows the impurities on the inner wall of the middle cavity (3) downwards so as to blow out the main cavity (1).
8. A method of using a transmission breather device according to claim 7, wherein: the cleaning air source is a pressure air source of a top cover control valve (9);
the impurity cleaning process comprises the following steps: when shifting gears, the top cover control valve (9) is opened, a pressure air source of the top cover control valve (9) is connected, pressurized air input by the pressure air source sequentially passes through the top cover control valve (9), the second air pipe (71), the second interface (7), the upper cavity (21) and the spacer hole (51) and then enters the middle cavity (31), and the pressurized air accelerated by the spacer hole (51) blows impurities on the inner wall of the middle cavity (3) downwards so as to blow out the main cavity (1); the cleaning frequency of the impurity cleaning process is proportional to the gear shifting frequency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710570491.7A CN107339408B (en) | 2017-07-13 | 2017-07-13 | Gearbox ventilation device and application method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710570491.7A CN107339408B (en) | 2017-07-13 | 2017-07-13 | Gearbox ventilation device and application method thereof |
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| CN107339408A CN107339408A (en) | 2017-11-10 |
| CN107339408B true CN107339408B (en) | 2023-05-05 |
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Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2880744A (en) * | 1957-04-19 | 1959-04-07 | Gen Motors Corp | Housing vent |
| JP2002130435A (en) * | 2000-10-20 | 2002-05-09 | Isuzu Motors Ltd | Breather structure of transmission |
| US7087160B2 (en) * | 2003-05-29 | 2006-08-08 | Spx Corporation | Outside-in flow engine and transmission filter and method |
| CN202140544U (en) * | 2011-07-21 | 2012-02-08 | 李金东 | Backflow type vent cap for deceleration or speed changing box used for vehicle |
| US8807156B2 (en) * | 2011-10-14 | 2014-08-19 | International Valve Manufacturing, L.L.C. | Gas vent valve |
| DE202013012312U1 (en) * | 2013-11-12 | 2016-02-24 | Veritas Ag | vent valve |
| CN203627743U (en) * | 2013-11-28 | 2014-06-04 | 长城汽车股份有限公司 | Ventilation plug for gearbox |
| CN204961782U (en) * | 2015-06-05 | 2016-01-13 | 江西理工大学 | Prevent into water gearbox breather plug |
| CN205089948U (en) * | 2015-09-10 | 2016-03-16 | 广州汽车集团股份有限公司 | Gearbox breather plug, gearbox breather plug mounting structure and gearbox |
| CN205136549U (en) * | 2015-11-20 | 2016-04-06 | 玉溪大红山矿业有限公司 | A speed reducer air bleeding valve device that under is used for high dust macroseism rotating ring border |
| CN206280472U (en) * | 2016-08-31 | 2017-06-27 | 陕西法士特齿轮有限责任公司 | A kind of gearbox vent plug of water-inlet-proof |
| CN206943388U (en) * | 2017-07-13 | 2018-01-30 | 东风商用车有限公司 | A kind of gearbox device of air |
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