Transmission lubricating structure and vehicle

Abstract

The transmission lubricating structure comprises a middle shell and a first oil spraying pipe, the first oil spraying pipe is arranged in the middle shell, a first connecting piece is arranged on the first oil spraying pipe, the first connecting piece is connected with the middle shell, and the first oil spraying pipe comprises a first linear part and a first bent part which are connected; a plurality of first oil spraying holes are formed in the first linear part; according to the transmission lubricating structure and the vehicle, when the first oil spraying pipe is installed in the middle shell, the first bent part of the first oil spraying pipe can be used for avoiding or bypassing the middle shell and gears and other structures in the shells on the two sides of the middle shell to be arranged, so that the first oil spraying hole can be just aligned to the position where oil spraying is needed; and meanwhile, the stability of the first oil spraying pipe in the middle shell is guaranteed through the first connecting piece, so that the overall structure is simple, the installation difficulty is small, the time cost and the production cost are effectively saved, the number of potential fault points is reduced, and the reliability is improved.

Description

Technical Field

[0001] The present application relates to the technical field of transmissions, and in particular to a transmission lubrication structure and a vehicle. Background Art

[0002] In the modern automobile industry, the performance and reliability of the transmission are of vital importance. With the continuous advancement of technology, more and more transmissions use forced lubrication to ensure that each key component can be fully lubricated when running at high speed, thereby extending the service life of the transmission and improving its working efficiency and stability. Therefore, the role of the lubrication pipeline in the transmission is crucial.

[0003] However, the design of the lubrication pipeline in the current transmission on the market is usually complicated, requiring multiple parts to cooperate with each other to complete the installation, which not only increases the difficulty and time cost of installation, but also makes the structure of the entire lubrication system more complicated. In addition, too many installation parts mean higher production costs, increase the number of potential failure points, and reduce the reliability of the lubrication structure. Summary of the invention

[0004] Based on this, it is necessary to provide a transmission lubrication structure and vehicle to address the problems of the above-mentioned lubrication structure being complicated, difficult to install, high cost and low reliability.

[0005] According to one aspect of the present application, a transmission lubrication structure is provided, comprising:

[0006] A middle shell having a first side surface and a second side surface that are opposite to each other;

[0007] A first fuel injection pipe, arranged on the first side surface, the first fuel injection pipe is provided with a first connecting piece, and the first connecting piece is connected to the middle housing;

[0008] The first fuel injection pipe includes a first straight portion and a first bent portion connected to each other, and a plurality of first fuel injection holes are arranged on the first straight portion.

[0009] In one embodiment, the transmission lubrication structure also includes a second fuel injection pipe, which is arranged on the second side surface, and a second connecting member is provided on the second fuel injection pipe, and the second connecting member is connected to the middle shell; the second fuel injection pipe includes a second straight portion and a second bent portion connected to each other, and a plurality of second fuel injection holes are provided on the second straight portion.

[0010] In one embodiment, an oil delivery channel is provided in the middle housing, and the first oil injection pipe and the second oil injection pipe are connected through the oil delivery channel.

[0011] In one embodiment, there is at least one first straight portion and at least one first bent portion, and two adjacent first straight portions are connected by the first bent portion;

[0012] And / or, there is at least one second straight portion and at least one second bent portion, and two adjacent second straight portions are connected by the second bent portion.

[0013] In one embodiment, the axis of the first oil injection hole is arranged perpendicularly to the axis of the first straight portion; and / or the axis of the second oil injection hole is arranged perpendicularly to the axis of the second straight portion.

[0014] In one embodiment, the first connecting member is detachably connected to the middle shell; and / or the second connecting member is detachably connected to the middle shell.

[0015] In one embodiment, an idler bracket is provided inside the middle shell, and the first connecting member is connected to the idler bracket; and / or a boss structure is provided inside the middle shell, and the second connecting member is connected to the boss structure.

[0016] In one embodiment, the first fuel injection pipe has a first fuel inlet end and a first fuel outlet end, the fuel inlet and the fuel outlet of the first fuel injection pipe are respectively arranged on the first fuel inlet end and the first fuel outlet end, and the first fuel inlet end and the first fuel outlet end are provided with a first conical guide structure on their outer circumferential surfaces; and / or, the second fuel injection pipe has a second fuel inlet end and a second fuel outlet end, the fuel inlet and the fuel outlet of the second fuel injection pipe are respectively arranged on the second fuel inlet end and the second fuel outlet end, and the second conical guide structure is provided on their outer circumferential surfaces.

[0017] According to another aspect of the present application, a vehicle is provided, comprising a transmission lubrication structure as described in any one of the above embodiments.

[0018] The above-mentioned transmission lubrication structure and vehicle can make the first oil injection pipe, when installed in the middle shell, use its first bent portion to avoid or bypass the gears and other structures in the middle shell and the shells on both sides thereof, and make the distance between the first oil injection pipe and the lubrication part appropriate, so that the first oil injection hole can be exactly aligned with the position where oil needs to be injected. At the same time, the stability of the first oil injection pipe in the middle shell is ensured by the first connecting member, so that the overall structure is simple, the installation difficulty is small, time cost and production cost are effectively saved, and the number of potential failure points is reduced, thereby improving reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the transmission lubrication structure of some embodiments of the present application.

[0020] Figure 2 This is a schematic diagram of the structure between the first side surface of the middle shell and the first oil injection pipe of the transmission lubrication structure in some embodiments of the present application.

[0021] Figure 3 This is a schematic structural diagram of the first oil injection pipe of the transmission lubrication structure of some embodiments of the present application.

[0022] Figure 4 This is a schematic diagram of the structure between the second side surface of the middle shell and the second oil injection pipe of the transmission lubrication structure in some embodiments of the present application.

[0023] Figure 5 This is a schematic diagram of the structure of the second oil injection pipe of the transmission lubrication structure of some embodiments of the present application.

[0024] Figure 6 This is a schematic diagram of the structure between the middle housing and the first and second fuel injection pipes of the transmission lubrication structure of some embodiments of the present application.

[0025] Reference numerals:

[0026] 1. Middle housing; 11. First side surface; 12. Second side surface; 13. Oil delivery channel; 14. Third fixing port; 15. Idle wheel bracket; 16. Boss structure;

[0027] 2. First fuel injection pipe; 21. First straight portion; 22. First bending portion; 23. First conical guide structure; 24. First fuel injection hole;

[0028] 3. A first connecting member;

[0029] 4. second fuel injection pipe; 41. second straight portion; 42. second bending portion; 43. second conical guide structure; 44. second fuel injection hole;

[0030] 5. Second connecting piece;

[0031] 6. first housing; 62. first fixing port;

[0032] 7. Second housing; 72. Second fixing port;

[0033] 8. First bolt;

[0034] 9. Second bolt. DETAILED DESCRIPTION

[0035] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0036] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0037] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0038] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0039] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0040] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0041] In the modern automotive industry, the performance and reliability of transmissions are crucial. With the continuous advancement of technology, more and more transmissions use forced lubrication to ensure that each key component can be fully lubricated when running at high speeds, thereby extending the service life of the transmission and improving its working efficiency and stability. Therefore, the role of the lubrication pipeline in the transmission is crucial. It ensures that each component inside the transmission is properly lubricated to reduce wear, dissipate heat, and maintain the normal operation of the transmission. However, the design of the lubrication pipeline in the transmission on the current market is usually more complicated, and multiple parts need to cooperate with each other to complete the installation, which not only increases the difficulty and time cost of installation, but also makes the structure of the entire lubrication system more cumbersome. In addition, too many installed parts mean higher production costs, increase the number of potential failure points, and reduce the reliability of the lubrication structure.

[0042] Therefore, the present application provides a transmission lubrication structure that can simplify the design of the lubrication pipeline, make the overall lubrication structure simpler, reduce the difficulty of installation, thereby effectively saving time and production costs, and reduce the number of potential failure points, thereby improving reliability.

[0043] See also Figure 1 and Figure 2An embodiment of the present application provides a transmission lubrication structure, including a middle housing 1 and a first oil injection pipe 2. The middle housing 1 is a part of the outer shell of the transmission, and has a gear and other structures inside. The first oil injection pipe 2 is a part of the lubrication pipeline, which is arranged inside the middle housing 1 and is used to provide lubricating oil to the gear and other structures to maintain the normal operation of the transmission.

[0044] In a specific configuration, the middle housing 1 has a first side surface 11 and a second side surface 12 that are opposite to each other, and the first fuel injection pipe 2 is disposed on the first side surface 11 of the middle housing 1 and is not directly connected to the middle housing 1. A first connector 3 is disposed on the first fuel injection pipe 2, and the first connector 3 is connected to the middle housing 1, so that the first fuel injection pipe 2 is connected to the middle housing 1 through the first connector 3.

[0045] Among them, see Figure 2 and Figure 3 The first fuel injection pipe 2 includes a first straight portion 21 and a first bent portion 22 connected to each other, and a plurality of first fuel injection holes 24 are provided on the first straight portion 21. This structure allows the first fuel injection pipe 2 to avoid or bypass the gears and other structures inside the middle housing 1 when installed in the middle housing 1 through the cooperation between the first straight portion 21 and the first bent portion 22, and the distance between the first fuel injection pipe 2 and the gears and other structures to be lubricated is appropriate, and the first fuel injection holes 24 can be exactly aligned with the position where fuel injection is required.

[0046] That is, when the first fuel injection pipe 2 of the present application is produced, it can be processed according to the internal structure of the first shell 6, so that the shape of the first fuel injection pipe 2 can be adapted to the size and arrangement of the gears and other structures in the first shell 6. The first fuel injection pipe 2 can avoid or bypass the gears and other structures in the first shell 6 during installation, and ensure that there is a suitable distance between the first fuel injection hole 24 and the gears and other structures that need to be lubricated, thereby ensuring the fuel injection effect of the first fuel injection pipe 2.

[0047] More specifically, the first fuel injection pipe 2 has a first fuel inlet end and a first fuel outlet end, the fuel inlet and the fuel outlet of the first fuel injection pipe 2 are respectively arranged on the first fuel inlet end and the first fuel outlet end, and the first fuel inlet end or the first fuel outlet end is inserted on the middle shell 1 to further ensure the stability of the connection between the first fuel injection pipe 2 and the middle shell 1.

[0048] It can be understood that at least one first straight portion 21 and at least one first bent portion 22 are provided, so that the shape of the first fuel injection pipe 2 can be easily adapted to the size and arrangement of the gears and other structures in the middle housing 1. Two adjacent first straight portions 21 are connected by the first bent portion 22, and the first oil inlet end and the first oil outlet end are both located on the first straight portion 21, so that the first fuel injection pipe 2 can be inserted into the middle housing 1.

[0049] In summary, the transmission lubrication structure of the present application can enable the first oil injection pipe 2 to be installed in the middle shell 1, and can use its first bent portion 22 to avoid or bypass the gears and other structures inside the middle shell 1 for arrangement, and make the first oil injection pipe 2 at an appropriate distance from the lubrication part, so that the first oil injection hole 24 can be exactly aligned with the position where oil needs to be injected. At the same time, the stability of the first oil injection pipe 2 in the middle shell 1 is ensured by the first connecting member 3, so that the overall structure is simple, the installation difficulty is small, time cost and production cost are effectively saved, and the number of potential failure points is reduced, thereby improving reliability.

[0050] See also Figure 1 and Figure 4 In one embodiment, the transmission lubrication structure further includes a second oil injection pipe 4. The second oil injection pipe 4, as a part of the lubrication pipeline, is arranged inside the second housing 7 and is used to provide lubricating oil to the gears and other structures to maintain the normal operation of the transmission.

[0051] In the specific configuration, the second fuel injection pipe 4 is disposed on the second side surface 12 of the middle housing 1 and is not directly connected to the middle housing 1. A second connecting member 5 is disposed on the second fuel injection pipe 4, and the second connecting member 5 is connected to the second housing 7, so that the second fuel injection pipe 4 is connected to the second housing 7 through the second connecting member 5.

[0052] Among them, see Figure 4 and Figure 5 The second fuel injection pipe 4 includes a second straight portion 41 and a second bent portion 42 connected to each other, and a plurality of second fuel injection holes 44 are provided on the second straight portion 41. This structure allows the second fuel injection pipe 4 to avoid or bypass the gears and other structures inside the second housing 7 when installed in the second housing 7 through the cooperation between the second straight portion 41 and the second bent portion 42, and the distance between the second fuel injection pipe 4 and the gears and other structures to be lubricated is appropriate, and the second fuel injection holes 44 can be exactly aligned with the position where fuel injection is required.

[0053] That is, during production, the second fuel injection pipe 4 of the present application can be processed according to the internal structure of the second shell 7, so that the shape of the second fuel injection pipe 4 can be adapted to the size and arrangement of the gears and other structures within the second shell 7. The second fuel injection pipe 4 can avoid or bypass the gears and other structures within the second shell 7 during installation, and ensure that there is a suitable distance between the second fuel injection hole 44 and the gears and other structures that need lubrication, thereby ensuring the fuel injection effect of the second fuel injection pipe 4.

[0054] More specifically, the second fuel injection pipe 4 has a second oil inlet end and a second oil outlet end. The oil inlet and the oil outlet of the second fuel injection pipe 4 are respectively arranged on the second oil inlet end and the second oil outlet end. The second oil inlet end or the second oil outlet end is inserted on the second shell 7 to further ensure the stability of the connection between the second fuel injection pipe 4 and the second shell 7.

[0055] It can be understood that at least one second straight portion 41 and at least one second bent portion 42 are provided, so that the shape of the second fuel injection pipe 4 can be easily adapted to the size and arrangement of the gear and other structures in the second housing 7. Two adjacent second straight portions 41 are connected by the second bent portion 42, and the second oil inlet end and the second oil outlet end are both located on the second straight portion 41, so that the second fuel injection pipe 4 is inserted into the second housing 7.

[0056] See also Figure 1 and Figure 6 In one embodiment, an oil delivery channel 13 is provided in the middle shell 1, and the first oil injection pipe 2 and the second oil injection pipe 4 are connected through the oil delivery channel 13, so that the lubricating oil in the first oil injection pipe 2 and the second oil injection pipe 4 can flow with each other, which is convenient for conveying lubricating oil from the first oil injection pipe 2 to the second oil injection pipe 4, or from the second oil injection pipe 4 to the first oil injection pipe 2 during use.

[0057] Specifically, two third fixed ports 14 communicating with the oil delivery channel 13 are provided on the middle housing 1, and the first fuel injection pipe 2 and the second fuel injection pipe 4 are respectively inserted into the two third fixed ports 14 to communicate with the oil delivery channel 13. In addition, in order to facilitate the insertion of the first fuel injection pipe 2 and the second fuel injection pipe 4 and to make the first fuel injection pipe 2 and the second fuel injection pipe 4 transitionally fit with the middle housing 1, the interiors of the two third fixed ports 14 are both provided with a conical guide structure.

[0058] In one embodiment, the transmission lubrication structure further includes a first housing 6 and a second housing 7, and the middle housing 1 is disposed between the first housing 6 and the second housing 7. That is, in the embodiment of the present application, the first housing 6 can be regarded as the main housing of the transmission, the second housing 7 can be regarded as the auxiliary housing of the transmission, and the middle housing 1 is used to connect the main housing and the auxiliary housing of the transmission. The present application improves the lubrication structure in the middle housing 1, the main housing and the auxiliary housing of the transmission, thereby effectively ensuring the simplicity and efficiency of the overall lubrication structure of the transmission.

[0059] Understandably, see Figure 1 Since the first fuel injection pipe 2 is also inserted in the first housing 6, a conical guide structure is also provided inside the first fixed port 62 on the first housing 6 for inserting the first fuel injection pipe 2, thereby facilitating the insertion connection between the first fuel injection pipe 2 and the first housing 6, facilitating the transitional fit between the first fuel injection pipe 2 and the first housing 6, and facilitating assembly. Similarly, since the second fuel injection pipe 4 is also inserted in the second housing 7, a conical guide structure is also provided inside the second fixed port 72 on the second housing 7 for inserting the second fuel injection pipe 4, thereby facilitating the insertion connection between the second fuel injection pipe 4 and the second housing 7, facilitating the transitional fit between the second fuel injection pipe 4 and the second housing 7, and facilitating assembly.

[0060] See also Figure 3 In one embodiment, the axis of the first oil injection hole 24 is perpendicular to the axis of the first straight portion 21 to ensure the lubricating oil in the first straight portion 21 is sprayed out through the first oil injection hole 24. In addition, the first oil injection holes 24 at different positions of the first oil injection pipe 2 have different sizes to meet specific lubrication requirements.

[0061] See also Figure 5 The axis of the second oil injection hole 44 is perpendicular to the axis of the second straight portion 41 to ensure the lubricating oil in the second straight portion 41 is sprayed out through the second oil injection hole 44. In addition, the second oil injection holes 44 at different positions of the second oil injection pipe 4 have different sizes to meet specific lubrication requirements.

[0062] See also Figure 2 and Figure 4 In one embodiment, an idler bracket 15 is provided inside the middle housing 1, and the first connecting member 3 is connected to the idler bracket 15, so that the first connecting member 3 can be fixed by using the existing structure inside the middle housing 1. A boss structure 16 is provided inside the second housing 7, and the second connecting member 5 is connected to the boss structure 16, so that the second connecting member 5 can be fixed by using the existing structure inside the second housing 7.

[0063] Specifically, see Figure 3 and Figure 5 , the first connecting member 3 and the second connecting member 5 are both sheet-like structures to save space. More specifically, one side of the first connecting member 3 is a semicircular arc shape with the same radius as the first fuel injection pipe 2, and the semicircular arc portion of the first connecting member 3 fits the first fuel injection pipe 2 and is fixed by welding. One side of the second connecting member 5 is a semicircular arc shape with the same radius as the second fuel injection pipe 4, and the semicircular arc portion of the second connecting member 5 fits the second fuel injection pipe 4 and is fixed by welding.

[0064] In one embodiment, the first connecting member 3 is detachably connected to the middle housing 1, so as to facilitate the maintenance and replacement of the first fuel injection pipe 2. The second connecting member 5 is detachably connected to the middle housing 1, so as to facilitate the maintenance and replacement of the second fuel injection pipe 4.

[0065] Specifically, see Figure 2 and Figure 4 , the first connecting member 3 is connected to the middle shell 1 by a first bolt 8, and the second connecting member 5 is connected to the middle shell 1 by a second bolt 9. More specifically, a first through hole for the first bolt 8 to pass through is provided on the other side of the first connecting member 3, and a second through hole for the second bolt 9 to pass through is provided on the other side of the second connecting member 5.

[0066] See also Figure 1 , Figure 3 and Figure 5In one embodiment, the first fuel injection pipe 2 has a first fuel inlet end and a first fuel outlet end, the fuel inlet and the fuel outlet of the first fuel injection pipe 2 are respectively arranged on the first fuel inlet end and the first fuel outlet end, and the outer circumference of the first fuel inlet end and the first fuel outlet end are both provided with a first conical guide structure 23. The first conical guide structure 23 can facilitate the first fuel injection pipe 2 to be inserted into the first fixing port 62 of the middle housing 1, so that a small interference fit can be adopted between the first fuel injection pipe 2 and the middle housing 1.

[0067] The second fuel injection pipe 4 has a second fuel inlet end and a second fuel outlet end, the fuel inlet and the fuel outlet of the second fuel injection pipe 4 are respectively arranged on the second fuel inlet end and the second fuel outlet end, and the outer circumferential surfaces of the second fuel inlet end and the second fuel outlet end are both provided with a second conical guide structure 43. The second conical guide structure 43 can facilitate the second fuel injection pipe 4 to be inserted into the second fixing port 72 of the second housing 7, so that a small interference fit can be adopted between the second fuel injection pipe 4 and the second housing 7.

[0068] An embodiment of the present application also provides a vehicle, comprising a transmission lubrication structure as described in any one of the above embodiments.

[0069] The vehicle of the present application can make the first oil injection pipe 2 of the above-mentioned transmission lubrication structure, when installed in the middle shell 1, avoid or bypass the gears and other structures inside the middle shell 1 and the first shell 6 by using its first bent portion 22, and make the first oil injection pipe 2 have a suitable distance from the lubrication part, so that the first oil injection hole 24 can be exactly aligned with the position where oil needs to be injected, and the stability of the first oil injection pipe 2 in the middle shell 1 is ensured by the first connecting member 3, and the second oil injection pipe 4 of the above-mentioned transmission lubrication structure can be installed in the second shell 7. Avoid or bypass the gears and other structures inside the middle shell 1 and the second shell 7 by using its second bent portion 42, and make the second oil injection pipe 4 have a suitable distance from the lubrication part, so that the second oil injection hole 44 can be exactly aligned with the position where oil needs to be injected, and the stability of the second oil injection pipe 4 in the middle shell 1 is ensured by the second connecting member 5, so that the overall structure is simple, the installation difficulty is small, time cost and production cost are effectively saved, the number of potential failure points is reduced, and reliability is improved.

[0070] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0071] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A transmission lubrication structure, characterized in that: include: A middle shell having a first side surface and a second side surface that are opposite to each other; A first fuel injection pipe, arranged on the first side surface, the first fuel injection pipe is provided with a first connecting piece, and the first connecting piece is connected to the middle housing; The first fuel injection pipe includes a first straight portion and a first bent portion connected to each other, and a plurality of first fuel injection holes are arranged on the first straight portion.

2. The transmission lubrication structure according to claim 1, characterized in that: The transmission lubrication structure also includes a second oil spray pipe, which is arranged on the second side surface. The second oil spray pipe is provided with a second connecting piece, and the second connecting piece is connected to the middle shell; the second oil spray pipe includes a second straight portion and a second bent portion connected to each other, and the second straight portion is provided with a plurality of second oil spray holes.

3. The transmission lubrication structure according to claim 2, characterized in that: An oil delivery channel is provided in the middle housing, and the first oil injection pipe and the second oil injection pipe are communicated through the oil delivery channel.

4. The transmission lubrication structure according to claim 2, characterized in that: There is at least one first straight portion and at least one first bent portion, and two adjacent first straight portions are connected by the first bent portion; And / or, there is at least one second straight portion and at least one second bent portion, and two adjacent second straight portions are connected by the second bent portion.

5. The transmission lubrication structure according to claim 2, characterized in that: The axis of the first oil injection hole is arranged perpendicularly to the axis of the first straight portion; and / or the axis of the second oil injection hole is arranged perpendicularly to the axis of the second straight portion.

6. The transmission lubrication structure according to claim 2, characterized in that: The first connecting member is detachably connected to the middle shell; and / or the second connecting member is detachably connected to the middle shell.

7. The transmission lubrication structure according to claim 2, characterized in that: An idler bracket is provided inside the middle shell, and the first connecting member is connected to the idler bracket; and / or a boss structure is provided inside the middle shell, and the second connecting member is connected to the boss structure.

8. The transmission lubrication structure according to claim 2, characterized in that: The first connecting member and the second connecting member are both sheet-like structures.

9. The transmission lubrication structure according to claim 2, characterized in that: The first fuel injection pipe has a first fuel inlet end and a first fuel outlet end, the fuel inlet and the fuel outlet of the first fuel injection pipe are respectively arranged on the first fuel inlet end and the first fuel outlet end, and the first conical guide structure is provided on the outer peripheral surface of the first fuel inlet end and the first fuel outlet end; And / or, the second fuel injection pipe has a second fuel inlet end and a second fuel outlet end, the fuel inlet and the fuel outlet of the second fuel injection pipe are respectively arranged on the second fuel inlet end and the second fuel outlet end, and a second conical guide structure is provided on the outer peripheral surface of the second fuel inlet end and the second fuel outlet end.

10. A vehicle, characterized in that: It comprises a transmission lubrication structure as described in any one of claims 1 to 9.

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