CN112413096A

CN112413096A - Transmission lubricating system, transmission and power assembly system

Info

Publication number: CN112413096A
Application number: CN202011251191.0A
Authority: CN
Inventors: 王福军; 于晶; 李福文; 徐飞; 郭佳伦
Original assignee: Suote Transmission Equipment Co Ltd
Current assignee: Suote Transmission Equipment Co Ltd
Priority date: 2020-11-10
Filing date: 2020-11-10
Publication date: 2021-02-26

Abstract

The invention relates to the technical field of vehicle engineering, in particular to a transmission lubricating system, a transmission and a power assembly system. A transmission lubrication system comprising: a housing end cap adapted to be disposed at a shaft end of a power shaft of the transmission; the oil pump is arranged on the end cover of the shell; and the circulating oil path is arranged on the end cover of the shell and comprises at least one forced lubricating oil pipe arranged at the oil outlet end, and the forced lubricating oil pipe is suitable for extending into the transmission. Compared with the prior art that the oil pump is arranged on the side surface of the power shaft, the size of the cross section of the transmission is effectively reduced, the subsequent transmission is convenient to mount on a vehicle body, and the effective lubricating function of each part in the transmission is ensured by arranging the forced lubricating oil pipe extending into the transmission.

Description

Transmission lubricating system, transmission and power assembly system

Technical Field

The invention relates to the technical field of vehicle engineering, in particular to a transmission lubricating system, a transmission and a power assembly system.

Background

The transmission mostly adopts splash lubrication, and for a large transmission with a plurality of components far away from the oil level, if a traditional lubrication method is adopted, rotating components such as gears, bearings and the like far away from the oil level cannot be well lubricated, and the service life and the service performance of the transmission are influenced.

The prior art provides a derailleur forced lubrication system, including derailleur main tank casing and the partition wall of setting between derailleur main tank and auxiliary tank, and the partition wall setting is equipped with the oil pump on the partition wall on the derailleur main tank casing, and the drive gear drive of oil pump through setting up on the main tank left side jackshaft, but the oil pump is arranged in the derailleur side, has increased the cross-sectional area of derailleur, has increaseed the derailleur and has arranged the degree of difficulty on whole car.

Disclosure of Invention

Therefore, the invention aims to provide a structure for performing forced lubrication on a transmission, and accordingly provides a transmission lubricating system, a transmission and a power assembly system.

In order to solve the above problems, the present invention provides a transmission lubrication system including:

a housing end cap adapted to be disposed at an axial end of a power shaft of a transmission;

the oil pump is arranged on the end cover of the shell;

and the circulating oil path is arranged on the end cover of the shell and comprises at least one forced lubricating oil pipe arranged at the oil outlet end, and the forced lubricating oil pipe is suitable for extending into the transmission.

Optionally, the oil circulation path further includes:

the oil pump is connected between the oil inlet pipe and the oil return pipe;

and the oil pump pumps out the lubricating oil in the transmission through the oil inlet pipe and pumps the pumped lubricating oil into the forced lubricating oil pipe through the oil return pipe.

Optionally, the oil pump, the oil inlet pipe and the oil return pipe are all arranged on the outer side of the shell end cover.

Optionally, an oil filter is arranged at the oil inlet end of the oil inlet pipe, and the oil filter is accommodated inside the transmission.

Optionally, the oil guide device further comprises an oil guide bolt adapted to fix and connect the circulation oil path, and the oil guide bolt comprises a connecting portion adapted to be disposed on the housing end cover and an oil guide hole opened on the connecting portion.

Alternatively, the oil guide hole may include a first oil hole disposed parallel to an axial direction of the connecting portion and a second oil hole disposed perpendicular to the axial direction of the connecting portion, the first oil hole communicating with the second oil hole.

Optionally, the oil return device further comprises an oil cooler arranged on the oil return pipe.

Optionally, a plurality of oil spray holes are formed in the pipe wall of the forced lubricating oil pipe.

Optionally, the oil outlet device further comprises a tee joint arranged at the oil outlet end, and the forced lubricating oil pipes are connected to the tee joint.

Optionally, the oil pump is a mechanical pump, and an interface of the oil pump is connected with a power shaft of the transmission.

The invention also provides a transmission comprising a transmission lubrication system as described in any one of the above.

The invention also provides a power assembly system comprising the transmission.

The technical scheme of the invention has the following advantages:

1. the transmission lubrication system of the present invention comprises: a housing end cap adapted to be disposed at a shaft end of a power shaft of the transmission; the oil pump is arranged on the end cover of the shell; and the circulating oil path is arranged on the end cover of the shell and comprises at least one forced lubricating oil pipe arranged at the oil outlet end, and the forced lubricating oil pipe is suitable for extending into the transmission.

Compared with the prior art that the oil pump is arranged on the side surface of the power shaft, the size of the cross section of the transmission is effectively reduced, the subsequent transmission is convenient to mount on a vehicle body, and the effective lubricating function of each part in the transmission is ensured by arranging the forced lubricating oil pipe extending into the transmission.

2. The transmission lubricating system comprises an oil inlet pipe arranged at the bottom of the transmission and an oil return pipe arranged at the top of the transmission, and an oil pump is connected between the oil inlet pipe and the oil return pipe. The oil inlet pipe is arranged at the bottom of the transmission, so that the recovery of lubricating oil in the transmission is facilitated, and the lubricating oil is easier to accumulate at the bottom of the transmission under the action of gravity; the oil return pipe is arranged at the top of the transmission, and lubricating oil coming out of the oil return pipe can play a more sufficient lubricating effect on parts in the transmission.

3. The oil pump, the oil inlet pipe and the oil return pipe in the transmission lubricating system are all arranged on the outer side of the shell end cover, and the oil pump, the oil inlet pipe and the oil return pipe are arranged on the outer side of the shell end cover, so that manual assembly and subsequent maintenance and replacement of parts are facilitated.

4. The oil filter is arranged at the oil inlet end of the oil inlet pipe in the transmission lubricating system, and is accommodated in the transmission, so that the lubricating oil is recycled in the transmission, and impurities are easily doped in the lubricating oil in the recycling process, so that the oil filter is arranged at the oil inlet pipe to filter the impurities in the lubricating oil, and the impurities are prevented from entering the oil pump and damaging the oil pump.

5. The transmission lubricating system further comprises an oil guide bolt suitable for fixing and connecting the circulating oil path, the oil guide bolt comprises a connecting part suitable for being arranged on the shell end cover and an oil guide hole formed in the connecting part, the pipeline can be fixed on the shell end cover through the oil guide bolt, communication among the pipelines can be achieved, and the integral structure of the circulating oil path is effectively simplified.

6. The transmission lubricating system further comprises a tee joint arranged at the oil outlet end, the plurality of forced lubricating oil pipes are connected to the tee joint, the oil outlet end can be provided with the plurality of forced lubricating oil pipes by using the tee joint, and the plurality of forced lubricating oil pipes extend into different positions in the transmission to achieve a more sufficient lubricating effect on the transmission.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic structural diagram of a transmission lubrication system in embodiment 1 of the present invention;

FIG. 2 is a schematic structural diagram of another perspective of a transmission lubrication system in accordance with embodiment 1 of the present invention;

fig. 3 is a sectional view of an oil guide plug in example 1 according to the present invention.

Description of reference numerals:

1-shell end cap;

2-an oil pump;

3-circulating oil circuit; 31-forced lubrication oil pipe; 32-oil inlet pipe; 33-an oil return pipe; 311-oil spray holes;

4-an oil filter;

5-oil guide plug; 51-a connecting portion; 52-oil guide hole; 521-a first oil hole; 522-second oil hole.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Example 1

As shown in fig. 1 to 3, a transmission lubrication system provided for the present embodiment includes: a housing end cap 1, the housing end cap 1 being adapted to be disposed at a shaft end of a power shaft of a transmission; the oil pump 2 is arranged on the shell end cover 1; and the circulating oil path 3 is arranged on the shell end cover, the circulating oil path 3 comprises at least one forced lubricating oil pipe 31 arranged at the oil outlet end, and the forced lubricating oil pipe 31 is suitable for extending into the transmission.

The housing end cover 1 in this embodiment is a rear end cover structure of the transmission, which is located at a shaft end of a power shaft of the transmission.

The oil pump 2 in this embodiment is a common mechanical pump, such as a gear pump, and the interface of the oil pump 2 is connected to the power shaft of the transmission in a key connection manner, and the transmission is used for driving the oil pump 2. Of course, a mounting hole suitable for mounting the oil pump 2 is further provided on the housing end cover 1 to fix the body of the oil pump 2 on the housing end cover 1. The oil pump 2 in this embodiment is installed outside the housing end cover 1, a via hole is processed on the housing end cover 1 at the installation position corresponding to the oil pump 2, and the interface of the oil pump 2 passes through the via hole and is connected with the power shaft.

So set up oil pump 2 on casing end cover 1 in this embodiment, casing end cover 1 is located the axle head department of the power shaft of derailleur, compares in prior art with oil pump 2 setting in the side of power shaft, effectively reduces the volume on the cross-section of derailleur, makes things convenient for the installation of follow-up derailleur on the automobile body, and stretches into the inside compulsory lubricated oil pipe 31 of derailleur through the setting, has guaranteed the effective lubrication function to each spare part in the derailleur.

As shown in fig. 1, the oil circulation path 3 in the present embodiment further includes: the oil pump is connected between the oil inlet pipe 32 and the oil return pipe 33; the oil pump pumps out the lubricating oil in the transmission through the oil inlet pipe 32, and the pumped lubricating oil is pumped into the forced lubricating oil pipe 31 through the oil return pipe 33, wherein the oil inlet pipe is arranged at the bottom of the transmission, which is more favorable for recovering the lubricating oil in the transmission, and the lubricating oil is more easily accumulated at the bottom of the transmission under the action of gravity; the oil return pipe is arranged at the top of the transmission, and lubricating oil coming out of the oil return pipe can play a more sufficient lubricating effect on parts in the transmission.

In order to facilitate manual assembly and subsequent maintenance and replacement of parts, the oil inlet pipe 32 and the oil return pipe 33 in the embodiment are both arranged on the outer side of the shell end cover 1.

The following explanation is made on the fixation and mutual connection and conduction of the oil inlet pipe 32 and the oil return pipe 33:

the oil inlet pipe 32 and the oil return pipe 33 in this embodiment use the oil guide bolt 5 fixed on the housing end cover 1, the oil guide bolt 5 is generally in the shape of a common bolt, and the screw portion thereof is configured as a connecting portion 51. An external thread section is processed on the outer peripheral surface of the connecting part 51 close to the bottom end part, a corresponding threaded hole is arranged on the shell end cover 1, and the oil inlet pipe 32 and the oil return pipe 33 are clamped on the oil guide bolt and fixed on the shell end cover 1 together with the oil guide bolt 5.

The oil guide bolt 5 in this embodiment is further provided with an oil guide hole 52 for facilitating communication between the oil inlet pipe 32, the oil return pipe 33, and the oil pump 2. The specific oil guide hole 52 includes a first oil hole 521 disposed parallel to the axial direction of the coupling portion 51 and a second oil hole 522 disposed perpendicular to the axial direction of the coupling portion 51, and the first oil hole 521 communicates with the second oil hole 522. If the oil inlet end of the oil inlet pipe 32 is directly connected to the second oil guide hole 522 of the oil guide bolt 5, when the oil guide bolt 5 is mounted on the end cover of the housing, the first oil guide hole 521 is communicated with the interior of the transmission, and the lubricating oil in the transmission can directly enter the oil inlet pipe 32 through the oil guide hole 52, so that the integrated design of fixing and communicating the oil pipes in the circulating oil path is realized, and the integral structure of the circulating oil path is effectively simplified. Other parts such as the fixing and communication of the oil return pipe 33 are the same as the principle of the oil inlet pipe 32, and are not described in detail herein.

Because the lubricating oil is used in the transmission in a circulating mode, impurities are easily doped in the lubricating oil in the circulating process, an oil filter is arranged at the oil inlet pipe, the impurities in the lubricating oil are filtered, and the impurities are prevented from entering the oil pump and damaging the oil pump.

As a modified embodiment, an oil cooler may be further installed on the oil return pipe 33 to implement a cooling process on the lubricating oil, so as to prevent the lubricating oil from being too hot and affecting the operation of the parts inside the transmission.

In this embodiment, in order to fully lubricate the internal parts of the transmission, a plurality of oil injection holes 311 are provided on the wall of the forced lubricating oil pipe 31. The oil spray holes 311 in this embodiment are generally circular holes, and the distribution of the oil spray holes on the forced lubrication oil pipe 31 corresponds to the positions of the parts requiring lubrication inside the transmission, so as to reduce the process and time of machining. As a modification, the oil injection holes 311 are also uniformly distributed on the forced lubricating oil pipe 31 to improve the adaptability thereof, and can be used in different transmissions.

As the deformation, still can be at valve body structures such as the end installation tee bend of producing oil, can set up a plurality of compulsory lubricating oil pipes at the end of producing oil, a plurality of compulsory lubricating oil pipes stretch into the different positions in the derailleur in order to realize the more abundant lubricated effect to the derailleur.

Example 2

This embodiment provides a transmission including the transmission lubrication system described in embodiment 1 above, and having all of its technical advantages, which are not described herein again.

Example 3

In this embodiment, a powertrain system is provided, which includes the transmission described in embodiment 2 above and has all the technical advantages thereof, and thus, detailed description thereof is omitted.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.

Claims

1. A transmission lubrication system, comprising:

a housing end cap (1), said housing end cap (1) being adapted to be arranged at a shaft end of a power shaft of a transmission;

the oil pump (2) is arranged on the shell end cover (1);

the oil circulation circuit (3) is arranged on the end cover of the shell, the oil circulation circuit (3) comprises at least one forced lubricating oil pipe (31) arranged at the oil outlet end, and the forced lubricating oil pipe (31) is suitable for extending into the transmission to be arranged.

2. The transmission lubrication system according to claim 1, wherein the circulating oil passage (3) further includes:

the oil pump is connected between the oil inlet pipe (32) and the oil return pipe (33);

and the oil pump pumps out the lubricating oil in the transmission through the oil inlet pipe (32), and the pumped lubricating oil is pumped into the forced lubricating oil pipe (31) through the oil return pipe (33).

3. Transmission lubrication system according to claim 2, characterised in that the oil pump (2), the oil inlet pipe (32) and the oil return pipe (33) are arranged outside the housing end cover (1).

4. Transmission lubrication system according to claim 2, characterised in that an oil filter (4) is provided at the oil inlet end of the oil inlet tube (32), the oil filter (4) being housed inside the transmission.

5. The transmission lubrication system according to claim 1, further comprising an oil guide plug (5) adapted to fix and connect the circulation oil path (3), the oil guide plug (5) including a connection portion (51) adapted to be provided on the housing end cover (1) and an oil guide hole (52) opened on the connection portion (51).

6. The transmission lubrication system according to claim 5, wherein the oil guide hole (52) includes a first oil hole (521) disposed in parallel with an axial direction of the connection portion (51) and a second oil hole (522) disposed perpendicular to the axial direction of the connection portion (51), the first oil hole (521) communicating with the second oil hole (522).

7. Transmission lubrication system according to claim 2, further comprising an oil cooler arranged on the oil return pipe (33).

8. Transmission lubrication system according to any of claims 1-7, characterised in that the wall of the forced lubrication pipe (31) is provided with several oil injection holes (311).

9. Transmission lubrication system according to any of claims 1-7, characterised in that it further comprises a tee provided at said oil outlet end, to which a number of said forced lubrication oil pipes (31) are connected.

10. Transmission lubrication system according to any of claims 1-7, characterised in that the oil pump is a mechanical pump and that the interface of the oil pump (2) is connected to the power shaft of the transmission.

11. A transmission, comprising:

a transmission lubrication system as claimed in any one of claims 1 to 10.

12. A powertrain system, comprising:

the transmission of claim 11.