CN110030363A - Gear with lubricating function - Google Patents
Gear with lubricating function Download PDFInfo
- Publication number
- CN110030363A CN110030363A CN201910181399.0A CN201910181399A CN110030363A CN 110030363 A CN110030363 A CN 110030363A CN 201910181399 A CN201910181399 A CN 201910181399A CN 110030363 A CN110030363 A CN 110030363A
- Authority
- CN
- China
- Prior art keywords
- gear
- ring portion
- oil
- lubricating function
- gear ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000001050 lubricating effect Effects 0.000 title claims abstract description 46
- 239000007788 liquid Substances 0.000 claims abstract description 47
- 230000002093 peripheral effect Effects 0.000 claims abstract description 11
- 239000003921 oil Substances 0.000 abstract description 81
- 238000000034 method Methods 0.000 abstract description 9
- 239000010687 lubricating oil Substances 0.000 abstract description 6
- 239000012530 fluid Substances 0.000 abstract 3
- 238000005461 lubrication Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 239000012208 gear oil Substances 0.000 description 2
- 235000013290 Sagittaria latifolia Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000015246 common arrowhead Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- BGOFCVIGEYGEOF-UJPOAAIJSA-N helicin Chemical compound O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@H]1OC1=CC=CC=C1C=O BGOFCVIGEYGEOF-UJPOAAIJSA-N 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000009828 non-uniform distribution Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/02—Toothed members; Worms
- F16H55/17—Toothed wheels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/042—Guidance of lubricant
- F16H57/0427—Guidance of lubricant on rotary parts, e.g. using baffles for collecting lubricant by centrifugal force
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0457—Splash lubrication
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Details Of Gearings (AREA)
Abstract
The invention provides a gear with a lubricating function. This gear can be at the indoor fluid of splendid attire lubricating oil of pivoted in-process throwing, the gear includes ring gear portion and is used for temporary storage the room of keeping in of fluid, the ring gear position is in the peripheral part of gear, wherein, the room of keeping in is located the radial inboard of ring gear portion, or the room of keeping in forms in the peripheral part of ring gear portion, the room of keeping in supplies periodically the indoor fluid entering or leaving of lubricating oil. The gear with the lubricating function provided by the invention is provided with the temporary storage chamber for the oil liquid, the oil liquid can periodically enter and leave the temporary storage chamber in the rotation process of the gear, and the gear is simple in structure and high in lubricating efficiency.
Description
Technical field
The present invention relates to lubricating areas, and in particular to have lubrication using lubrication (also referred to as bath lubrication) mode of splashing
The gear of function.
Background technique
Lubrication of splashing is a kind of common lubricating system, using the transmission system for lubrication of splashing usually in the machine of transmission system
It is contained with lubricating oil in case and is at least partially submerged in the gear of lubrication in oil liquid, gear during rotation will
Oil liquid, which is spilt, to be atomized into droplet-shaped and takes in friction pair and form self-lubricate, or the oil liquid spilt is first focused on oil catcher
In, then lubricant housings is flowed into using designed oil duct.
For using ordinary gear as the splash-lubricating system of the gear of lubrication, spilling for oil liquid mainly passes through gear
Teeth portion realize, therefore lubricate efficiency limited by gear own form.
Sometimes, in order to improve lubricating efficiency, need to increase additional oil pump or oil liquid guiding part, this will occupy power train
Biggish space in uniting.
Summary of the invention
In view of the above-mentioned prior art state and make the present invention.Profit of splashing is used the purpose of the present invention is to provide a kind of
The gear with lubricating function of sliding mode.
The present invention provides a kind of gear with lubricating function, can shed in the course of rotation and be contained in lubricating oil
Indoor oil liquid, the gear include gear ring portion and the temporary room for temporarily storing the oil liquid, and the gear ring portion is located at institute
State the outer peripheral portion of gear, wherein
The temporary room is located at the radially inner side in the gear ring portion or the temporary room is formed in the periphery in the gear ring portion
Part,
The temporary room periodically enters or leaves for the indoor oil liquid of the lubricating oil.
In at least one embodiment, the gear further includes several spokes of the radially inner side positioned at the gear ring portion
Item, the spoke extend from the radially inner side of the gear to radial outside and are connected with the gear ring portion.
In at least one embodiment, the spoke has multiple, limits one between two adjacent spokes
The temporary room.
In at least one embodiment, in the shape of a spiral, each described spoke is the one of a helicoid to the spoke
Part, the rotation direction of the helicoid are identical as the rotation direction of the gear.
In at least one embodiment, the spoke is in planar, and the plane is inclined relative to the axial direction of the gear
Tiltedly.
In at least one embodiment, several oil grooves penetrated through radially are formed in the gear ring portion, at least one
A temporary room is connected to by the oil groove with the external of the gear.
In at least one embodiment, at least one end face in two end faces in the axial direction in the gear ring portion is to another
One end face is recessed, to limit the oil groove.
In at least one embodiment, the oil groove penetrates through the gear ring portion in the axial direction.
In at least one embodiment, the edge phase in front of rotation direction at the edge of the oil groove and the spoke
It cuts.
In at least one embodiment, the central region in the axial direction in the gear ring portion is recessed to radially inner side, thus
Form the oil groove being connected to the interval between the spoke.
In at least one embodiment, the oil groove has multiple, and multiple oil grooves are in the circumferential by between the spoke
It separates.
In at least one embodiment, outer peripheral portion in the gear ring portion is formed with several does not penetrate through radially
Temporary tank, the temporary tank positioned at the one end open of radial outside, positioned at the closed at one end of radially inner side, each is described temporarily
It deposits slot and constitutes a temporary room.
In at least one embodiment, at least one end face part in two end faces in the axial direction in the gear ring portion
Ground is recessed to another end face, to limit the temporary tank.
In at least one embodiment, the temporary tank from radially inner side to radial outside while extending towards institute
State the rotation direction deflection of gear.
Gear according to the present invention with lubricating function has the temporary room of oil liquid, lubricates in the rotation process of gear
Oil liquid can periodically enter and leave temporary room, and gear structure is simple, lubricating efficiency is high.
Detailed description of the invention
Fig. 1 is the schematic diagram that the gear according to the present invention with lubricating function is applied to that speed changer carries out splashing lubrication.
Fig. 2 is a kind of schematic diagram of gear with lubricating function according to the first embodiment of the present invention.
Fig. 3 is the schematic diagram of another gear with lubricating function according to the first embodiment of the present invention.
Fig. 4 to Fig. 5 is the schematic diagram of the gear according to the second embodiment of the present invention with lubricating function.
Fig. 6 is the schematic diagram of the gear according to the third embodiment of the present invention with lubricating function.
Description of symbols
1 gear；101 gear ring portions；102 spokes；103,113 oil groove；1031 slot sides；104 blowout patche portions；
2 case of transmission；201 oil chambers；202 gathering rooms；2011 first passages；
L liquid level；The interval A；B temporary tank.
Specific embodiment
Exemplary embodiments of the present invention are described with reference to the accompanying drawings.It should be appreciated that these specific descriptions are only used for
How teaching those skilled in the art implement the present invention, rather than all feasible modes that exhaustion is of the invention, without in
It limits the scope of the invention.
By used in speed changer with the gear of lubricating function for introduce it is according to the present invention have lubricating function
Gear (also abbreviation gear below).Axial, circumferential direction and the radial axial direction for each meaning gear according to the present invention in the present invention,
It is circumferential and radial.
Fig. 1 shows gear 1 according to the present invention and is installed on the schematic diagram for being lubricated oil liquid conveying in speed changer.Speed change
There is oil chamber 201 and gathering room 202, oil chamber 201 and gathering room 202 pass through 2 institute of case of transmission inside device shell 2
The first passage 2011 that limits and communicate with each other.Lubricating oil (also abbreviation oil liquid below), Fig. 1 are filled in oil chamber 201
Schematically show the liquid level L of oil liquid.Gear 1 is installed in oil chamber 201 and is partially immersed oil liquid.In gear 1
In rotation process, the oil liquid in oil chamber 201 is raised by temporary room (such as interval A) and enters collection by first passage 2011
Grease chamber 202, gathering room 202 is further connected by output magazine with other chambers in speed changer, so that oil liquid is transported to it
The position and/or oil liquid is made to flow to cool down to speed changer by preset path that he needs to lubricate.
Next, introducing the different embodiments of gear 1 according to the present invention in conjunction with attached drawing 2 to 6.
First embodiment
Firstly, introducing gear 1 according to the first embodiment of the present invention referring to Fig. 2 to Fig. 3.
Gear 1 includes being located at the gear ring portion 101 of outer peripheral portion and being uniformly distributed in the circumferential positioned at the multiple of inner peripheral portion
Spoke 102.The blowout patche portion 104 of radially inner side of multiple spokes 102 from gear 1 to radial outside extend and with gear ring portion 101
It is connected.Blowout patche portion 104 and gear ring portion 101 are annular in shape, are formed with multiple teeth in the periphery in gear ring portion 101.Adjacent two
An interval A is formed between spoke 102.
Spoke 102 can be spiral helicine, and for example, referring to Fig. 2, each spoke 102 is a part of a helicoid,
And on the same direction of observation, the rotation direction (as shown by arrows in figure) of gear 1 is consistent with the rotation direction of helicoid (same
It for clockwise direction or is all counterclockwise).
Spoke 102 can also be the plane of non-helical shape, and for example, referring to Fig. 3, each spoke 102 is a plane
A part.Preferably, the plane is not axial parallel with gear 1, i.e., the plane is relative to the axially inclined of gear 1.
Both set-up modes of spoke 102 make, when be spaced A be in lower during rotation when, oil liquid be easy into
Enter to be spaced A；When interval, A is in eminence during rotation, oil liquid is easy to be spilled over interval A.
In conjunction with Fig. 1, when gear 1 rotates, the oil liquid filled at the interval A between two spokes 102 is located at every
That spoke 102 at the rotation direction rear of one interval A drives and gear 1 is followed to rotate.When spoke 102 during rotation
After exposing liquid level L, the oil liquid in the A of interval in front of the rotation direction of the spoke 102 is partially raised and spoke 102 is followed to move
Then higher position into rotation process is spilled over interval A under the influence of centrifugal force and enters via first passage 2011
Gathering room 202.Solid arrow in Fig. 1 schematically shows the path that oil liquid enters gathering room 202 from interval A, hollow arrow
Head shows the rotation direction of gear 1.
Preferably, referring to Fig. 2, at least one end face part in the axial direction of gear 1 ground and shape recessed to another end face
At perforation gear ring portion 101, the i.e. oil groove 103 of the outside of connection interval A and gear 1.Preferably, oil groove 103 is along spoke 102
Radially outside extends extending direction, edge phase of the bar groove side 1031 of oil groove 103 with spoke 102 in front of rotation direction
Cut, thus interval A in oil liquid can swimmingly by the interval rotation direction rear spoke 102 guiding and with the spoke
The guiding for the oil groove 103 that item 102 connects and flow out interval A.
Present embodiment to the depth in the axial direction of oil groove 103 with no restriction, oil groove 103 can run through in the axial direction or
Not through gear 1.Such as Fig. 3 shows the set-up mode that oil groove 103 runs through gear 1 in the axial direction, in this embodiment,
Gear ring portion 101 is partitioned into several small sections by oil groove 103 in the circumferential, these sections are by multiple spokes 102 and blowout patche portion
104 link together.
In the embodiment shown in fig. 3, it is preferable that oil groove 103 is connected between two adjacent teeth in gear ring portion 101
Root portion, can reduce in this way to gear engagement influence.
Second embodiment
Illustrate second embodiment according to the present invention referring to Figure 4 and 5.For with the component in first embodiment
The same or similar component of structure or function marks identical appended drawing reference, and omits and illustrate to these components.
Second embodiment is the modification of first embodiment.In the first embodiment, in order to facilitate oil liquid from interval A
It is interior to be flowed out to radial outside, in the axial end face of gear 1, oil groove 103 is set；And in the present embodiment, oil groove 113 is located at tooth
The axial middle part of wheel 1.
Specifically, positioned at the gear ring portion 101 of the radial outside of each interval A by the radial perforation of oil groove 113, in other words,
Gear ring portion 101 is separated into two parts by least one oil groove 113 in the axial direction.The gear ring portion 101 of gear 1 is by arranged side by side in the axial direction
Two rings constitute, the part for being located at interval A radial outside of the two rings arranged side by side is separated from each other, and it is radial to be located at spoke 102
The part in outside is still connected to each other.
In the embodiment of other modifications, the part of the radial outside positioned at spoke 102 in gear ring portion 101 also at least portion
Ground is divided to be occupied by oil groove 113, i.e., oil groove 113 also at least partly penetrates through in the circumferential.In this case, the gear ring portion of gear 1
101 are made of two rings arranged side by side in the axial direction, and the two rings arranged side by side spoke 102 radial outside also at least partly
It separates.
In 1 rotation process of gear, the oil liquid dished out by centrifugal force effect to radial outside can flow from oil groove 113
It is spaced A out.
Third embodiment
Illustrate third embodiment according to the present invention referring to Fig. 6.
In the present embodiment, temporary room no longer by between spoke 102 for example shown in Fig. 2 to Fig. 5 interval A provide,
It does not need that spoke 102 is arranged in the radial inside portion of gear 1 yet；And it only needs between the radial outside portion in gear ring portion 101
Every ground, temporary tank B is set.Referring to Fig. 6 and Fig. 1 is combined, temporary tank B, can be temporary by oil liquid during rotation as temporary room
When storage and oil liquid is taken away into the liquid level L in oil chamber 201, the oil liquid temporarily stored in temporary tank B is passing through rotation process
In higher position when can be dished out due to centrifugal force and at least partly temporary tank B, enter later via first passage 2011
Gathering room 202.
Specifically, referring to Fig. 6, at least one end face part in two end faces in the axial direction of gear 1 to another
A end face is recessed and forms multiple temporary tank B being uniformly distributed circumferentially.Temporary tank B is not penetrated through radially, specifically, is kept in
Slot B is closed and be open for the oil liquid in oil chamber 201 in the end of radial outside in the end of radially inner side
Disengaging.
Temporary tank B can be along linear extension, be also possible to extend along curve, and in other words, temporary tank B is on axial end face
Projection can be it is linearly, be also possible to it is curvilinear.Preferably, temporary tank B is outside from radially inner side to diameter
It is deflected while side extends also along the rotation direction of gear 1, to facilitate oil liquid to enter temporary tank B in lower position while increase
The centrifugal force that oil liquid in temporary tank B is subject to.
It should be appreciated that above-mentioned each embodiment and its part aspect or feature can be appropriately combined.
The part beneficial effect of above embodiment of the invention is briefly described below.
(i) by the present invention in that forming the temporary room of oil liquid, such as interval A or temporary tank between spoke 102 on gear 1
B so that gear 1 can temporarily store the oil liquid in oil chamber 201 during periodic rotary, and makes this part oil liquid
Temporary room is pulled out away from after following gear 1 to turn to higher position due to centrifugal force, is reached at the components for needing to lubricate.
(ii) gear 1 according to the present invention with lubricating function, only need to be to the gear in traditional splash-lubricating system
Making simple modifications can be improved lubricating efficiency.
(iii) include gear 1 of the invention lubricating system, such as speed changer can be not provided with additional lubrication assistant
Components or pipeline, system structure is compact, at low cost.
(iv) working method of the gear 1 according to the present invention with lubricating function is simple, and oil liquid leaves the temporary of gear 1
Room is that centrifugal force is utilized, simple to the rotation control mode of gear 1 in greasing.
It should be appreciated that above embodiment is merely exemplary, it is not used in the limitation present invention.Those skilled in the art can be with
Various modifications and changes are made to above embodiment under the teachings of the present invention, without departing from the scope of the present invention.Such as:
(i) present invention with no restriction, such as by shape divides the type of the gear with lubricating function, has lubricating function
Gear can be roller gear, bevel gear, non-circular gear etc.；Such as by tooth trace shape point, the gear with lubricating function can
To be spur gear, helical gear, herringbone bear, curved tooth cylindrical gear etc.；Such as the surface as where gear point, the tooth with lubricating function
Although wheel preferably external gear, such as the oilgear of third embodiment setting according to the present invention is also possible to internal gear
Oil liquid can be still temporarily stored into positioned at gear ring by (i.e. the inner peripheral portion that the tooth of gear is set to gear ring portion), internal gear during rotation
The temporary tank of the peripheral part in portion is simultaneously dished out oil liquid temporary tank using centrifugal force.
(ii) although of the invention temporary room (such as first embodiment and for being set to the gear with lubricating function
The temporary tank B in interval A and third embodiment in two embodiments) preferably along the gear with lubricating function
It is circumferential equally distributed, however this it is not necessary to, these temporary rooms can also be in the circumferential direction of the gear with lubricating function
Non-uniform Distribution；Although the oil groove 103/113 in first embodiment according to the present invention/second embodiment preferably has more
A and multiple oil grooves 103/113 are uniformly distributed along the circumferential direction of the gear with lubricating function, however this it is not necessary to, example
As oil groove 103/113 can also with only one, or such as oil groove 103/113 can also have it is multiple but along having lubricating function
The circumferential direction of gear is non-uniformly distributed.
(iii) oil groove 103/113 is not required in first embodiment according to the present invention and second embodiment, when
When being not provided with oil groove 103/113, the oil liquid that is spaced in A can also simultaneously axially outside and radial outside it is mobile and between leaving
Every A.
(iv) the gear ring portion of the gear according to the present invention with lubricating function can not form complete annular, such as tooth
Circle portion can only constitute a part of annular.
Although (v) embodiments of the present invention are said for being applied to the gear with lubricating function of speed changer
Bright, however the gear with lubricating function of the invention is not limited to use in speed changer, can be used for any using splashing
The device that lubricating system is lubricated.
Claims (10)
1. a kind of gear (1) with lubricating function can be shed in the course of rotation and be contained in oil chamber (201)
Oil liquid, the gear (1) includes gear ring portion (101) and the temporary room for temporarily storing the oil liquid, the gear ring portion
(101) it is located at the outer peripheral portion of the gear (1), wherein
The temporary room is located at the radially inner side of the gear ring portion (101) or the temporary room is formed in the gear ring portion (101)
Outer peripheral portion,
The oil liquid that the temporary room periodically supplies in the oil chamber (201) enters or leaves.
2. the gear (1) according to claim 1 with lubricating function, which is characterized in that the gear (1) further includes position
In several spokes (102) of the radially inner side of the gear ring portion (101), the diameter of the spoke (102) from the gear (1)
Inwardly lateral radial outside extends and is connected with the gear ring portion (101).
3. the gear (1) according to claim 2 with lubricating function, which is characterized in that the spoke (102) has more
It is a, the temporary room is limited between two adjacent spokes (102).
4. the gear (1) according to claim 2 or 3 with lubricating function, which is characterized in that in the gear ring portion
(101) several oil grooves (103,113) penetrated through radially are formed with, at least one described temporary room passes through the oil groove
(103,113) are connected to the external of the gear (1).
5. the gear (1) according to claim 4 with lubricating function, which is characterized in that the axis of the gear ring portion (101)
At least one end face in two upward end faces is recessed to another end face, to limit the oil groove (103).
6. the gear (1) according to claim 4 with lubricating function, which is characterized in that the oil groove (103) is in axial direction
The upper perforation gear ring portion (101).
7. the gear (1) according to claim 4 with lubricating function, which is characterized in that the axis of the gear ring portion (101)
Upward central region is recessed to radially inner side, to form the oil being connected to the interval (A) between the spoke (102)
Slot (113).
8. the gear (1) according to claim 7 with lubricating function, which is characterized in that the oil groove (113) has more
A, multiple oil grooves (113) are spaced apart by the spoke (102) in the circumferential.
9. the gear (1) according to claim 1 with lubricating function, which is characterized in that in the gear ring portion (101)
Outer peripheral portion is formed with several temporary tanks (B) not penetrated through radially, one end positioned at radial outside of the temporary tank (B)
It opens, positioned at the closed at one end of radially inner side, each described temporary tank (B) constitutes the temporary room.
10. the gear (1) according to claim 9 with lubricating function, which is characterized in that the gear ring portion (101)
At least one end face part in two end faces in axial direction it is recessed to another end face, to limit the temporary tank
(B)。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910181399.0A CN110030363A (en) | 2019-03-11 | 2019-03-11 | Gear with lubricating function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910181399.0A CN110030363A (en) | 2019-03-11 | 2019-03-11 | Gear with lubricating function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110030363A true CN110030363A (en) | 2019-07-19 |
Family
ID=67235839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910181399.0A Pending CN110030363A (en) | 2019-03-11 | 2019-03-11 | Gear with lubricating function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110030363A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112161040A (en) * | 2020-09-03 | 2021-01-01 | 珠海格力电器股份有限公司 | Lubricating system of transmission, transmission and vehicle |
| WO2022136289A1 (en) * | 2020-12-21 | 2022-06-30 | Bombardier Transportation Gmbh | Device for conveying a lubricating oil of a mechanical torque transmission device and traction transmission for rail vehicles |
| WO2023241853A1 (en) * | 2022-06-14 | 2023-12-21 | Robert Bosch Gmbh | Transmission structure |
-
2019
- 2019-03-11 CN CN201910181399.0A patent/CN110030363A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112161040A (en) * | 2020-09-03 | 2021-01-01 | 珠海格力电器股份有限公司 | Lubricating system of transmission, transmission and vehicle |
| WO2022136289A1 (en) * | 2020-12-21 | 2022-06-30 | Bombardier Transportation Gmbh | Device for conveying a lubricating oil of a mechanical torque transmission device and traction transmission for rail vehicles |
| WO2023241853A1 (en) * | 2022-06-14 | 2023-12-21 | Robert Bosch Gmbh | Transmission structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190719 |