CN215720744U - Gearbox lubricating system, transmission and vehicle - Google Patents

Gearbox lubricating system, transmission and vehicle Download PDF

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Publication number
CN215720744U
CN215720744U CN202122380704.4U CN202122380704U CN215720744U CN 215720744 U CN215720744 U CN 215720744U CN 202122380704 U CN202122380704 U CN 202122380704U CN 215720744 U CN215720744 U CN 215720744U
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China
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oil
gearbox
transmission
oil hole
lubricating
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CN202122380704.4U
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Chinese (zh)
Inventor
苏倩
唐亚卓
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Amte Shanghai New Energy Technology Co ltd
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Amte Shanghai New Energy Technology Co ltd
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Abstract

The utility model provides a gearbox lubricating system, a gearbox and a vehicle, belongs to the technical field of gearboxes, and solves the problems that in the prior art, cost is increased due to independent lubrication between gearbox bodies and large temperature difference possibly exists between the gearbox bodies. This gearbox lubricating system includes the main gear case, the auxiliary transmission case, first oilhole and second oilhole, be provided with first gear pair in the main gear case, be provided with the second gear pair in the auxiliary transmission case, first oilhole and second oilhole all communicate main gear case and auxiliary transmission case, wherein, along vertical direction, first oilhole position is less than second oilhole position, first gear pair is used for sending the lubricating oil in the main gear case to the auxiliary transmission case through the second oilhole in, and unnecessary lubricating oil can flow back to the main gear case through first oilhole in the auxiliary transmission case. The gearbox lubricating system, the transmission and the vehicle provided by the utility model have the advantages of low cost, good lubricating effect, convenience for monitoring and controlling the oil temperature and good system stability.

Description

Gearbox lubricating system, transmission and vehicle
Technical Field
The utility model belongs to the technical field of transmissions, and particularly relates to a gearbox lubricating system, a transmission and a vehicle.
Background
With the development of new energy automobiles, the energy conversion efficiency of the power assembly has always been a major concern, wherein in addition to the conversion efficiency of the driving motor, the transmission efficiency of the transmission is also an important index.
In an automobile gearbox, bearings and gears are indispensable important components, and the lubricating effect of the bearings and the gears under the operating condition is one of key factors influencing the transmission efficiency of the gearbox. For the lubrication of a multi-box gearbox system, a design mode of independent lubrication of each box is usually adopted, but the cost is correspondingly increased because sealing parts such as oil seals and the like need to be added at the connecting positions between the boxes, and in addition, because the lubricating oil between the boxes is in a mutually isolated state, a large temperature difference possibly exists between the boxes, and the monitoring and the control of the oil temperature of the system are not facilitated.
SUMMERY OF THE UTILITY MODEL
In view of the above, the utility model provides a gearbox lubrication system, a transmission and a vehicle, which are used for solving the problems that in the prior art, cost is increased due to independent lubrication between gearbox bodies and a large temperature difference possibly exists between the gearbox bodies.
The technical scheme adopted by the utility model is as follows:
in a first aspect, the present invention provides a gearbox lubrication system comprising: the gearbox comprises a main gearbox and an auxiliary gearbox, wherein a first gear pair is arranged in the main gearbox, and a second gear pair is arranged in the auxiliary gearbox; the first oil hole and the second oil hole are communicated with the main gearbox and the auxiliary gearbox; the first oil hole is lower than the second oil hole in the vertical direction, the first gear pair is used for conveying lubricating oil in the main gearbox to the auxiliary gearbox through the second oil hole, and redundant lubricating oil in the auxiliary gearbox flows back to the main gearbox through the first oil hole.
As a preferable mode of the transmission lubrication system, when the lubricating oil in the sub-transmission is accumulated to a first liquid level, the lubricating oil in the sub-transmission flows into the main transmission through the first oil hole, the lubricating oil level in the main transmission is a second liquid level, the first liquid level is the same as the lowest point of the first oil hole, and the second liquid level is lower than the first liquid level.
As a preferable mode of the transmission lubrication system described above, the first oil hole maximum flow rate is greater than or equal to the second oil hole maximum flow rate.
As a preferable scheme of the transmission lubrication system, the main transmission includes a first case wall, the first oil hole and the second oil hole penetrate through the first case wall, and an oil collecting mechanism is disposed on the first case wall.
As a preferable mode of the transmission lubrication system, the oil collecting mechanism includes a first oil guiding rib, and a vertical end of the first oil guiding rib is disposed on one side of the second oil hole.
As a preferable scheme of the gearbox lubricating system, the oil collecting mechanism further comprises a second oil guiding rib, an oil collecting groove is formed between the second oil guiding rib and the first oil guiding rib, and the oil collecting groove is communicated with the second oil hole.
As a preferable mode of the transmission lubrication system described above, an end of the oil sump that is away from the second oil hole is higher than an end of the oil sump that is close to the second oil hole in the vertical direction.
In a preferred embodiment of the transmission lubrication system, the first gear pair includes a first gear and a second gear, the first gear and the second gear are helical gears, and a leading meshing portion of the first gear and a trailing meshing portion of the second gear are closer to the oil collecting mechanism than the trailing meshing portion.
In a second aspect, the present invention provides a transmission comprising a gearbox lubrication system as described above.
In a third aspect, the present invention provides a vehicle comprising a gearbox lubrication system or transmission as described above.
In conclusion, the beneficial effects of the utility model are as follows:
the utility model provides a gearbox lubricating system which comprises a main gearbox, an auxiliary gearbox, a first oil hole and a second oil hole, wherein a first gear pair is arranged in the main gearbox, the first gear pair generates rotary motion in the running process of the gearbox, part of lubricating oil in the main gearbox is attached to the first gear pair to generate rotary motion along with the first gear pair, centrifugal motion is generated around the first gear pair, the first oil hole and the second oil hole are communicated with the main gearbox and the auxiliary gearbox, the lubricating oil splashed outwards flows into the auxiliary gearbox along with the second oil hole, the position of the first oil hole is lower than that of the second oil hole along the vertical direction, after the lubricating oil flowing into the auxiliary gearbox from the second oil hole accumulates to the lowest point of the first oil hole, the redundant lubricating oil in the auxiliary gearbox overflows into the main gearbox from the first oil hole, and thus a dynamic circulation communicated lubricating system is formed, the utility model can ensure that the main gearbox and the auxiliary gearbox respectively maintain the designed oil quantity in a good lubricating state, and a dynamic circulating system can be formed between the main box and the auxiliary box, so that the oil temperature of the whole transmission system tends to be more stable and level, and the oil temperature is convenient to monitor and control. The transmission provided by the utility model comprises the transmission lubricating system, the cost is low, the lubricating effect is good, and the oil temperature can be conveniently monitored and controlled. The vehicle provided by the utility model comprises the gearbox lubricating system or the transmission, is low in cost, is convenient for monitoring and controlling the oil temperature, and is good in system stability.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below, and for those skilled in the art, without any creative effort, other drawings may be obtained according to the drawings, and these drawings are all within the protection scope of the present invention.
FIG. 1 is a diagram illustrating the relationship between the first liquid level and the second liquid level according to the present invention;
FIG. 2 is a diagram showing the positional relationship of the first and second oil holes in accordance with the present invention;
FIG. 3 is a schematic structural view of the main transmission case of the present invention;
parts and numbering in the drawings:
1. a main gear box; 10. a first gear pair; 101. a first gear; 102. a second gear; 11. second liquid level
2. A sub-transmission case; 20. a first liquid level;
3. a first tank wall; 30. a first oil hole; 31. a second oil hole; 32. an oil collecting mechanism; 321. a first oil guiding rib; 322. a second oil guiding rib; 323. an oil collecting tank.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element. In case of conflict, the embodiments of the present invention and the various features of the embodiments may be combined with each other within the scope of the present invention.
Example 1
Referring to fig. 1 to fig. 3, an embodiment of the present invention discloses a gearbox lubrication system, including:
the lubricating oil lubricating device comprises a main gearbox 1 and an auxiliary gearbox 2, wherein a first gear pair 10 is arranged in the main gearbox 1, a second gear pair is arranged in the auxiliary gearbox 2, the first gear pair 10 rotates in the running process of the gearbox, a part of lubricating oil in the main gearbox 1 adheres to the first gear pair 10 and rotates along with the first gear pair 10, centrifugal motion is generated around the lubricating oil, and the first gear pair 10 is used for conveying the lubricating oil in the main gearbox 1 to the auxiliary gearbox 2 through a second oil hole 31;
the first oil hole 30 and the second oil hole 31, the first oil hole 30 and the second oil hole 31 are both communicated with the main transmission case 1 and the auxiliary transmission case 2, the lubricating oil which is driven by the first gear pair 10 and splashed outwards flows into the auxiliary transmission case 2 along with the second oil hole 31, the position of the first oil hole 30 is lower than the position of the second oil hole 31 along the vertical direction, the lubricating oil which flows into the auxiliary transmission case 2 from the second oil hole 31 can be accumulated to the lowest point of the first oil hole 30, and the redundant lubricating oil in the auxiliary transmission case 2 can overflow from the first oil hole 30 to the main transmission case 1, thereby forming a dynamic circulation communication type lubricating system, not only ensuring that the main transmission case 2 maintains the designed oil quantity in a good lubricating state respectively, but also forming a dynamic circulation system between the main transmission case and the auxiliary transmission case, enabling the oil temperature of the whole transmission system to tend to be more stable and level, and being convenient for monitoring and controlling the oil temperature, in addition, the utility model utilizes the gear pair which normally runs in the gearbox to provide power for the lubricating system of the gearbox, thereby saving the cost.
To facilitate understanding of the gearbox lubrication system, the main gearbox 1 and the auxiliary gearbox 2 will now be further described as follows:
the main gear box 1 functions in the operation of the vehicle as follows: the transmission ratio is changed to meet the requirements of different driving conditions on traction force, so that the engine can work under the favorable condition as much as possible and the driving speed requirement can be met; the vehicle can run in reverse to meet the requirement of the vehicle running in reverse; interrupting power transmission, namely interrupting power transmission to a driving wheel when an engine is started, runs at an idle speed, shifts gears of the automobile or needs to stop; neutral is achieved and when the clutch is engaged, the transmission stops outputting power. The auxiliary gearbox 2 is used for heavy-duty automobiles which have large empty and full-load mass change, complex use conditions, and particularly have mild torque change of diesel engines, poor adaptability, need to enlarge the transmission ratio range and increase multiple gear numbers so as to meet the requirements of dynamic property and economy under various use conditions.
Referring to fig. 1 to 3, the transmission lubrication system after normal operation is a dynamic circulation communication lubrication system, and when the lubrication system operates, a certain amount of lubricating oil is added into the main transmission case 1, and at this time, no lubricating oil exists in the auxiliary transmission case 2. With the rotation of the first gear pair 10, the lubricating oil in the main transmission case 1 gradually flows into the sub-transmission case 2 through the second oil holes, the auxiliary gearbox 2 is a closed box body, lubricating oil can be continuously accumulated when entering the auxiliary gearbox 2, when the lubricating oil in the sub-transmission 2 has accumulated to the lowest point of the first oil hole 30, the lubricating oil in the sub-transmission 2 flows back to the main transmission 1 through the first oil hole, and at this time, the lubricating oil page in the auxiliary gearbox 2 is a first liquid level 20, the height of the first liquid level 20 is consistent with the height of the lowest point of the first oil hole 30, in this case, the lubricating oil in the sub-transmission 2 is merged with the original lubricating oil thereafter, and an equal amount of merged lubricating oil overflows, meanwhile, the liquid level of the lubricating oil flowing into the main transmission case 1 is the second liquid level 11, and the height of the second liquid level 11 is always lower than the height of the first liquid level 20, so that the principle that the liquid flows from top to bottom is satisfied. In the lubricating system that has reached dynamic circulation, the volume that lubricating oil reduces in the main gearbox 1 is unanimous with the volume that lubricating oil increases in the auxiliary gearbox 2, and the oil mass of the lubricating oil that overflows in the auxiliary gearbox 2 is unanimous with the lubricating oil mass of backward flow to main gearbox 1, so reciprocating circulation can guarantee that main and auxiliary gearbox 2 keeps the design oil mass of good lubricated state separately, and makes the oil temperature of whole derailleur system tend to more steady level, the monitoring and the control of the oil temperature of being convenient for.
In this embodiment, preferably, the first oil hole 30 and the second oil hole 31 are both circular holes, and the number of the second oil holes 31 is equal to one of the two first oil holes 30, so as to ensure that the maximum flow of the first oil hole 30 is greater than or equal to the maximum flow of the second oil hole 31, the sectional area of the first oil hole 30 should be greater than or equal to the sum of the sectional areas of the two second oil holes 31, so as to ensure that the lubricating oil flowing into the auxiliary transmission 2 can completely overflow the auxiliary transmission 2, if the maximum flow of the first oil hole 30 is less than the maximum flow of the second oil hole 31, that is, the lubricating oil flowing into the auxiliary transmission 2 is more than the lubricating oil flowing back into the main transmission 1, and the lubricating oil can be accumulated in the auxiliary transmission 2, so that the effect of dynamic circulation lubrication cannot be achieved. The core of ensuring that the maximum flow of the first oil hole 30 is greater than or equal to the maximum flow of the second oil hole 31 is that the sectional area of the first oil hole 30 should be greater than or equal to the sum of the sectional areas of the second oil holes 31, therefore, the shapes of the first oil hole 30 and the second oil hole 31 include but are not limited to circular holes, which can be square holes or other irregular holes, and the number of the first oil hole 30 and the second oil hole 31 should not be limited, the two second oil holes 31 adopted in the embodiment also have an advantage, the first gear pair 10 in the main transmission case 1 includes two gears, each gear can correspond to one second oil hole, so that the internal space of the transmission can be fully utilized, the alternate oil feeding of the maximized oil quantity is realized, and the oil temperature of the whole transmission system tends to be more stable.
Referring to fig. 1 to 3, the main transmission case 1 includes a first case wall 3, the first case wall 3 is close to the sub-transmission case 2, a first oil hole 30 and a second oil hole 31 penetrate through the first case wall 3, an oil collecting mechanism 32 is disposed on the first case wall 3, the lubricating oil splashed by the first gear pair 10 during the rotation process is dispersed outwards, only a small amount of the lubricating oil passes through the second oil hole and enters the sub-transmission case 2, in order to make the transmission lubrication system fully function, the oil collecting mechanism 32 is disposed to gather the dispersed lubricating oil together, the circulating amount of the lubricating oil of the lubrication system is increased, the lubrication effect is better, and the oil temperature between the two case bodies is more stable.
Preferably, the oil collecting mechanism 32 includes a first oil guiding rib 321, the first oil guiding rib 321 is a plate-shaped structure and is disposed on the first case wall 3, and the end of the first oil guiding rib 321 in the vertical direction is disposed on one side of the second oil hole 31 and contacts with the edge of the second oil hole 31. In this embodiment, the first oil guiding rib 321 is vertically arranged from top to bottom along a vertical direction, an upper portion is a head end, a lower portion is a tail end, the head end is connected with the first wall 3 and the top wall of the main transmission case 1 in a seamless manner, during the rotation of the first gear pair 10, the splashed lubricating oil is blocked by the first oil guiding rib 321, the splashed lubricating oil is attached to the first oil guiding rib 321 after contacting the first oil guiding rib 321, and flows down from top to bottom along the plate surface of the first oil guiding rib 321 under the action of gravity, because the tail end of the first oil guiding rib 321 is arranged at one side of the second oil hole 31, the attached lubricating oil finally flows to the tail end of the first oil guiding rib 321 and flows into the second oil hole 31, so that the larger the amount of the lubricating oil in the second oil hole 31 depends on the amount of the lubricating oil attached to the first oil guiding rib 321, the larger the surface area of the first oil guiding rib 321, the larger the amount of the lubricating oil attached to the first oil guiding rib, the more lubricating oil that gearbox lubricating system circulates in a certain period of time, lubricating system's lubricated effect is better, and the oil temperature between two boxes can be more steady. In the present embodiment, the first oil bead 321 is not limited to a plate shape, and may be a columnar shape, a curved shape, or the like, and generally, the larger the surface area of the first oil bead 321, the better the lubrication effect of the transmission lubrication system.
In the present embodiment, the specific structure of the oil collecting mechanism 32 includes, but is not limited to, the first oil guiding rib 321, and may also be a groove-like structure, for example, a groove is formed in the first case wall 3, the four walls of the groove are inclined surfaces, the notch of the groove connects with the second oil hole 31, and the splashed lubricating oil adheres to the four walls of the groove and gathers together to flow into the second oil hole 31.
Preferably, the oil collecting mechanism 32 further includes a second oil guiding rib 322, an oil collecting groove 323 is formed between the second oil guiding rib 322 and the first oil guiding rib 321, the oil collecting groove 323 is communicated with the second oil hole, the second oil guiding rib 322 is obliquely arranged and extends upwards along the joint of the second oil guiding rib and the first oil guiding rib 321, and the splashed lubricating oil can be effectively gathered in the oil collecting groove 323. Further, the end of the oil collecting groove 323 away from the second oil hole 31 is higher than the end of the oil collecting groove 323 close to the second oil hole 31 in the vertical direction, so that the lubricating oil in the oil collecting groove 323 is prevented from flowing out.
Referring to fig. 3, the first gear pair 10 includes a first gear 101 and a second gear 102, the first gear 101 and the second gear 102 are helical gears, the first meshing portion of the first gear 101 and the second gear 102 is closer to the oil collecting mechanism 32 than the second meshing portion, because the first gear 101 and the second gear 102 are both helical gears, the lubricating oil excited by the two gears will not only do centrifugal motion, but also will spread along the rack-and-pinion rotation direction, in this embodiment, the gear meshing portion closer to the oil collecting mechanism 32 is the first meshing portion, the gear meshing portion farther from the oil collecting mechanism 32 is the second meshing portion, the first gear 101 rotates right, the second gear 102 rotates left, the first gear 101 and the second gear 102 rotate in the direction toward the meshing portions of the two, the oil collecting mechanism 32 of the main transmission case 1 is closer to the middle portions of the first gear 101 and the second gear 102, when the first gear 101 and the second gear 102 rotate, the right-handed first gear 101 throws the kicked-up lubricating oil to one side of the oil collecting mechanism 32, and the left-handed second gear 102 throws the kicked-up lubricating oil to the other side of the oil collecting mechanism 32, so that the dispersed lubricating oil can be sufficiently collected.
Example 2
The embodiment 2 of the utility model discloses a transmission, which adopts the transmission lubricating system, has low cost and good lubricating effect and is convenient for monitoring and controlling the oil temperature.
Example 3
The embodiment 3 of the utility model discloses a vehicle which comprises the gearbox lubricating system or the transmission, and has the advantages of low cost, convenience for monitoring and controlling the oil temperature and good system stability.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. A transmission lubrication system, comprising:
the gearbox comprises a main gearbox and an auxiliary gearbox, wherein a first gear pair is arranged in the main gearbox, and a second gear pair is arranged in the auxiliary gearbox;
the first oil hole and the second oil hole are communicated with the main gearbox and the auxiliary gearbox;
the first oil hole is lower than the second oil hole in the vertical direction, the first gear pair is used for conveying lubricating oil in the main gearbox to the auxiliary gearbox through the second oil hole, and redundant lubricating oil in the auxiliary gearbox flows back to the main gearbox through the first oil hole.
2. The transmission lubrication system according to claim 1, wherein when the lubricating oil in the sub-transmission accumulates to a first level, the lubricating oil in the sub-transmission flows into the main transmission through the first oil hole, the lubricating oil level in the main transmission is a second level, the first level coincides with the lowest point height of the first oil hole, and the second level is lower than the first level.
3. The transmission lubrication system of claim 1, wherein the first oil hole maximum flow rate is greater than or equal to the second oil hole maximum flow rate.
4. The transmission lubrication system of claim 1, wherein said main transmission case includes a first case wall, said first oil hole and said second oil hole extending through said first case wall, said first case wall having oil collection means disposed thereon.
5. The transmission lubrication system according to claim 4, wherein the oil gathering mechanism includes a first oil guide rib, and a tip end of the first oil guide rib in a vertical direction is provided on one side of the second oil hole.
6. The lubrication system of a transmission according to claim 5, wherein the oil collecting mechanism further comprises a second oil guiding rib, an oil collecting groove is formed between the second oil guiding rib and the first oil guiding rib, and the oil collecting groove is communicated with the second oil hole.
7. The transmission lubrication system of claim 6, wherein an end of the oil sump that is distal from the second oil hole is higher than an end of the oil sump that is proximal to the second oil hole in the vertical direction.
8. A gearbox lubrication system as claimed in any one of claims 4 to 6 in which the first gear pair comprises a first gear and a second gear, the first and second gears being helical gears, the first and second gears being closer to the oil gathering means at the leading engagement than at the trailing engagement.
9. A transmission comprising a gearbox lubrication system according to any of claims 1-8.
10. A vehicle comprising a gearbox lubrication system as defined in any one of claims 1 to 8 or a transmission as defined in claim 9.
CN202122380704.4U 2021-09-29 2021-09-29 Gearbox lubricating system, transmission and vehicle Active CN215720744U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202122380704.4U CN215720744U (en) 2021-09-29 2021-09-29 Gearbox lubricating system, transmission and vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202122380704.4U CN215720744U (en) 2021-09-29 2021-09-29 Gearbox lubricating system, transmission and vehicle

Publications (1)

Publication Number Publication Date
CN215720744U true CN215720744U (en) 2022-02-01

Family

ID=80026429

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202122380704.4U Active CN215720744U (en) 2021-09-29 2021-09-29 Gearbox lubricating system, transmission and vehicle

Country Status (1)

Country Link
CN (1) CN215720744U (en)

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