Pipeline assembly, oil cooler assembly, hydraulic system, transmission, power assembly and vehicle

Abstract

The utility model relates to a pipeline assembly, an oil cooler assembly, a hydraulic system, a transmission, a power assembly and a vehicle. The pipeline assembly comprises a straight pipe, a locking piece and a bent pipe. The first end of the straight pipe is provided with an external thread area; the first end of the bent pipe can be in butt joint with the first end of the straight pipe, and a first protruding part is arranged at the first end of the bent pipe. The locking piece is provided with an internal thread area, the locking piece can be rotatably arranged at the first end of the bent pipe in a sleeving mode from the second end of the bent pipe, and the first protruding part can prevent the locking piece from being disengaged from the first end of the bent pipe; when the straight pipe and the bent pipe are locked by the locking piece, the internal thread area is in threaded connection with the external thread area, and the locking piece is pressed on the first protruding part. The pipeline assembly provided by the utility model is low in assembly difficulty and high in degree of freedom.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline connection. More specifically, the utility model relates to a pipeline assembly, an oil cooler assembly, a hydraulic system, a transmission, a powertrain and a vehicle. Background Art

[0002] In some hydraulic systems, each component needs to be connected through a pipeline structure. Due to the position limitation of each component, the assembly and connection of the liquid pipeline are relatively difficult, which is not conducive to the integrated layout of the hydraulic system space. Summary of the Utility Model

[0003] An object of the utility model is to provide a pipeline assembly, an oil cooler assembly, a hydraulic system, a transmission, a powertrain and a vehicle.

[0004] According to a first aspect of the utility model, there is provided a pipeline assembly, comprising:

[0005] A straight pipe, an external thread area is arranged at a first end of the straight pipe;

[0006] A bent pipe, a first end of the bent pipe can be butted against the first end of the straight pipe, and a first protrusion is arranged at the first end of the bent pipe;

[0007] A locking member, an internal thread area is arranged on the locking member, the locking member can be rotatably sleeved on the first end of the bent pipe from a second end of the bent pipe, and the first protrusion can prevent the locking member from disengaging from the first end of the bent pipe;

[0008] When the locking member locks the straight pipe and the bent pipe, the internal thread area is screwed with the external thread area, and the locking member is pressed against the first protrusion.

[0009] Optionally, the first protrusion protrudes around the outer periphery of the bent pipe, and the locking member is further provided with a pressing portion, and the pressing portion protrudes from an inner surface of the locking member;

[0010] When the locking member locks the straight pipe and the bent pipe, a side of the pressing portion close to the straight pipe is pressed against a side of the first protrusion away from the straight pipe.

[0011] Optionally, the bent pipe is an integrally formed structure, an inner diameter of the pressing portion is larger than an outer diameter of the bent pipe and smaller than an outer diameter of the first protrusion.

[0012] Optionally, a second protrusion is arranged on an outer periphery of the straight pipe, and the second protrusion is located on a side of the external thread area away from the bent pipe.

[0013] Optionally, a first connection part is provided on the end face of the first end of the straight pipe, and a second connection part is provided on the end face of the first end of the bent pipe. The first connection part can be inserted into the second connection part, so that the first end of the straight pipe is butted against the first end of the bent pipe.

[0014] Optionally, a sealing ring is further included. The sealing ring is arranged between the first end of the straight pipe and the first end of the bent pipe to seal the butting part of the straight pipe and the bent pipe.

[0015] Optionally, step surfaces are provided on both the outer surface of the first connection part and the inner surface of the second connection part, so that the first connection part can be inserted into the inner side of the second connection part. The sealing ring is sleeved on the first connection part and is located between the step surface of the first connection part and the end face of the second connection part; or,

[0016] Step surfaces are provided on both the inner surface of the first connection part and the outer surface of the second connection part, so that the second connection part can be inserted into the inner side of the first connection part. The sealing ring is sleeved on the second connection part and is located between the step surface of the second connection part and the end face of the first connection part.

[0017] Optionally, when the locking member locks the straight pipe and the bent pipe, a thread locking adhesive is provided between the external thread area and the internal thread area.

[0018] According to the second aspect of the present utility model, an oil cooler assembly is provided, including: the pipeline assembly described in the first aspect and an oil cooler connected to the pipeline assembly.

[0019] Optionally, the oil cooler is provided with a liquid inlet or a liquid outlet, and the second end of the straight pipe is connected to the liquid inlet or the liquid outlet.

[0020] Optionally, a plurality of straight pipes and a plurality of bent pipes are respectively provided. The plurality of straight pipes and the plurality of bent pipes are alternately connected, and the number of the locking members matches the number of the straight pipes and the bent pipes.

[0021] According to the third aspect of the present utility model, a hydraulic system is provided, including: the oil cooler assembly described in the second aspect, or the pipeline assembly described in the first aspect.

[0022] According to the fourth aspect of the present utility model, a transmission is provided, including: the hydraulic system described in the third aspect, or the oil cooler assembly described in the second aspect, or the pipeline assembly described in the first aspect.

[0023] According to a fifth aspect of the present utility model, there is provided a powertrain, comprising: the transmission according to the fourth aspect, or the hydraulic system according to the third aspect, or the oil cooler assembly according to the second aspect, or the pipeline assembly according to the first aspect.

[0024] According to a sixth aspect of the present utility model, there is provided a vehicle, comprising: the powertrain according to the fifth aspect, or the transmission according to the fourth aspect, or the hydraulic system according to the third aspect, or the oil cooler assembly according to the second aspect, or the pipeline assembly according to the first aspect.

[0025] One technical effect of the present utility model is that, for the pipeline assembly provided by the present utility model, by providing a straight pipe and a bent pipe that are mutually butted, when the locking member does not lock the straight pipe and the bent pipe, the locking member can be disengaged from the second end of the bent pipe or sleeved on the first end of the bent pipe, reducing the assembly difficulty of the pipeline assembly; in addition, before locking, the bent pipe can be rotated to adjust the interface angle of its second end, improving the freedom degree of pipeline connection and being conducive to the integrated layout of the hydraulic system space.

[0026] Other features and advantages of the present utility model will become clear through the following detailed description of the exemplary embodiments of the present utility model with reference to the accompanying drawings. Description of the Drawings

[0027] The drawings forming a part of the specification depict embodiments of the present utility model and, together with the description, are used to explain the principles of the present utility model.

[0028] Figure 1 is an exploded structural schematic diagram of the pipeline assembly provided by an embodiment of the present utility model.

[0029] Figure 2 is Figure 1 a sectional view taken along the direction A of

[0030] Figure 3 is Figure 1 a sectional assembly view taken along the direction A of

[0031] Figure 4 is an assembly schematic diagram of three straight pipes, two bent pipes and two locking members provided by an embodiment of the present utility model.

[0032] Figure 5 is Figure 4 an exploded view of

[0033] Figure 6 is a structural schematic diagram of the oil cooler assembly provided by an embodiment of the present utility model.

[0034] Description of the Reference Numerals:

[0035] 1. Straight pipe; 11. External thread area; 12. Second convex part; 13. First connecting part; 2. Elbow pipe; 21. First convex part; 22. Second connecting part; 3. Locking piece; 31. Crimping part; 32. Internal thread area; 4. Oil cooler; 41. Liquid outlet; 42. Liquid inlet; 5. Sealing ring. Detailed implementation manners

[0036] Now, various exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that: Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0037] The following description of at least one exemplary embodiment is merely illustrative in nature and in no way limits the present invention, its application, or its use.

[0038] Technologies and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such technologies and devices should be regarded as part of the specification.

[0039] In all the examples shown and discussed herein, any specific values should be construed as merely exemplary and not as a limitation. Thus, other examples of the exemplary embodiments may have different values.

[0040] It should be noted that: Similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0041] As Figures 1 to 5 shown, according to the first aspect of the present invention, an oil cooler assembly is provided, including a straight pipe 1, an elbow pipe 2, and a locking piece 3; an external thread area 11 is provided at the first end of the straight pipe 1; the first end of the elbow pipe 2 can be butted against the first end of the straight pipe 1, and a first convex part 21 is provided at the first end of the elbow pipe 2; an internal thread area 32 is provided on the locking piece 3, and the locking piece 3 can be rotatably sleeved on the first end of the elbow pipe 2 from the second end of the elbow pipe 2, and the first convex part 21 can prevent the locking piece 3 from disengaging from the first end of the elbow pipe 2; when the locking piece 3 locks the straight pipe 1 and the elbow pipe 2, the internal thread area 32 is screwed with the external thread area 11, and the locking piece 3 presses against the first convex part 21.

[0042] Specifically, in this embodiment, by providing a straight pipe 1 and a bent pipe 2 that can be docked with each other, during the assembly process of the pipeline assembly, the locking member 3 is first sleeved on the bent pipe 2 from the second end of the bent pipe 2, and the locking member is restricted at the first end of the bent pipe 2 by the first protrusion 21 on the bent pipe 2. When the locking member 3 does not lock the straight pipe 1 and the bent pipe 2, the interface angle of the second end of the bent pipe 2 can be adjusted by rotating the bent pipe 2. After the interface angle of the second end of the bent pipe 2 is adjusted appropriately, the straight pipe 1 is tightened with the internal thread area 32 of the locking member 3 through the external thread area 11 until its first end is docked with the first end of the bent pipe 2. At this time, the locking member 3 is pressed against the first protrusion 21, thereby realizing the locking connection of the locking member 3 to the straight pipe 1 and the bent pipe 2.

[0043] During the above assembly process, the locking member 3 can also be screwed to dock the first end of the straight pipe 1 and the first end of the bent pipe 2. Specifically, it can be operated according to the actual situation to improve the flexibility of the assembly. Among them, the first protrusion 21 is a structure protruding from the outer surface of the bent pipe 2. On the one hand, it can play a limiting role when the locking member 3 moves towards the first end of the bent pipe 2. On the other hand, when the locking member 3 and the straight pipe 1 are screwed together, the first protrusion 21 can move towards the side of the straight pipe 1 along with the locking member 3, so that the bent pipe 2 and the straight pipe 1 are docked together. Its shape, specific protruding height, and the limiting cooperation method with the locking member 3 can be designed according to actual needs.

[0044] Before the locking member 3 locks the straight pipe 1 and the bent pipe 2, the bent pipe 2 can rotate relative to the locking member 3, so that the orientation of the second end interface of the bent pipe 2 can be adjusted during the assembly process, improving the degree of freedom of assembly, avoiding being restricted by the positions of surrounding components, facilitating the spatial integration design of the hydraulic system, and the locking member 3 can be detached from or sleeved on the bent pipe 2 from the second end of the bent pipe 2, improving the convenience of the assembly or disassembly of the two, which is beneficial to improving the assembly efficiency and reducing the production difficulty; after the locking member 3 locks the straight pipe 1 and the bent pipe 2, the locking member 3 is pressed against the first protrusion 21, making the bent pipe 2 no longer rotatable relative to the locking member 3, improving the reliability and sealing performance of the assembly.

[0045] In the above structure, when assembling the pipeline component on the oil cooler 4, for the connection between the straight pipe 1, the elbow pipe 2, the locking member 3 and the oil cooler 4, the second end of the straight pipe 1 can be first connected to the liquid inlet 42 or the liquid outlet 41 of the oil cooler 4, then the first end of the straight pipe 1 is butted against the first end of the elbow pipe 2, and by rotating the elbow pipe 2, the interface angle of the second end of the elbow pipe 2 is adjusted. Finally, through the screwing connection between the internal thread of the locking member 3 and the external thread of the straight pipe 1 and the crimping between the locking member 3 and the first convex portion 21, the locking member 3 butts and locks the first ends of the straight pipe 1 and the elbow pipe 2. Among them, the connection between the second end of the straight pipe 1 and the liquid inlet 42 or the liquid outlet 41 of the oil cooler 4 can be realized by means of threaded screwing, and the present utility model does not limit this.

[0046] In practical applications, in order to further improve the freedom degree at the external interface of the entire pipeline component, a straight pipe 1 and an elbow pipe 2 can be further connected to the second end of the elbow pipe 2, and then locked by the locking member 3. By analogy, in order to further improve the freedom degree of the external interface of the pipeline component, more straight pipes 1, elbow pipes 2 and locking members 3 can be provided, making the assembly of the pipeline component more convenient. Among them, the connection between the second end of the elbow pipe 2 and the second end of the straight pipe 1 can adopt butt joint forms such as threaded connection or welding, and the present utility model does not limit this.

[0047] Optionally, as Figures 1 to 3 shown, the first convex portion 21 protrudes around the outer circumference of the elbow pipe 2, and the locking member 3 is further provided with a crimping portion 31, and the crimping portion 31 protrudes from the inner surface of the locking member 3; when the locking member 3 locks the straight pipe 1 and the elbow pipe 2, the side of the crimping portion 31 close to the straight pipe 1 is pressed against the side of the first convex portion 21 away from the straight pipe 1.

[0048] Specifically, in this embodiment, the first convex portion 21 is arranged around the outer circumference of the elbow pipe 2, and the crimping portion 31 protrudes from the inner surface of the locking member 3. On the one hand, the first convex portion 21 can block the locking member 3 from disengaging from the first end of the elbow pipe 2 by limiting the crimping portion 31. On the other hand, when the locking member 3 is in the locked state, the crimping portion 31 can be pressed against the first convex portion 21, playing a certain role in sealing and fastening the locking of the elbow pipe 2 and the straight pipe 1. Among them, the first convex portion 21 can be an annular protrusion surrounding the elbow pipe 2 or a plurality of protrusion structures evenly arranged around the outer circumference of the elbow pipe 2, so that the acting force between the locking member 3 and the elbow pipe 2 is more uniform, which is beneficial to further improving the sealing performance. And the crimping portion 31 can also be designed as an annular protrusion structure extending along the inner surface of the locking member 3.

[0049] In the above structure, the side of the crimping portion 31 close to the straight pipe 1 is pressed against the side of the first convex portion 21 away from the straight pipe 1, so as to facilitate the screw connection between the internal thread region 32 on the locking member 3 and the external thread region 11 at the first end of the straight pipe 1. That is, the side of the crimping portion 31 close to the straight pipe 1 and the side of the first convex portion 21 away from the straight pipe 1 are both crimping surfaces. When the locking member 3 is locked, the two crimping surfaces are in contact and pressed against each other.

[0050] Optionally, as Figures 1 to 3 shown, the bent pipe 2 is an integrally formed structure, and the inner diameter of the crimping portion 31 is larger than the outer diameter of the bent pipe 2 and smaller than the outer diameter of the first convex portion 21.

[0051] Specifically, in this embodiment, the inner diameter of the crimping portion 31 is larger than the outer diameter of the bent pipe 2, so as to facilitate the locking member 3 to be sleeved into or disengaged from the second end of the bent pipe 2, improving the convenience of assembling the locking member 3 and the bent pipe 2. And the inner diameter of the crimping portion 31 is smaller than the outer diameter of the first convex portion 21. When the locking member 3 is sleeved on the bent pipe 2, on the one hand, the crimping portion 31 can prevent the locking member 3 from disengaging from the first end of the bent pipe 2, enabling the locking member 3 to be assembled at the first end of the bent pipe 2, facilitating the locking assembly of the first end of the bent pipe 2 and the first end of the straight pipe 1. On the other hand, it is also convenient for the pressing between the locking member 3 and the first convex portion 21 after the angle of the bent pipe 2 is adjusted subsequently, improving the reliability of locking.

[0052] Optionally, as Figures 1 to 3 shown, a second convex portion 12 is provided on the outer periphery of the straight pipe 1, and the second convex portion 12 is located on the side of the external thread region 11 away from the bent pipe 2.

[0053] Specifically, in this embodiment, the second convex portion 12 is provided on the outer periphery of the straight pipe 1, so that during the assembly process, the straight pipe 1 can be twisted through the second convex portion 12 to realize the tightening of the external thread region 11 and the internal thread region 32. Among them, the side of the external thread region 11 away from the bent pipe 2 refers to the specific position of the second convex portion 12 on the straight pipe 1 when the straight pipe 1 and the bent pipe 2 are butted together. Thus, it is convenient for the installation, adjustment or disassembly of the straight pipe 1.

[0054] Optionally, as Figures 1 to 3 shown, a first connecting portion 13 is provided on the end surface of the first end of the straight pipe 1, and a second connecting portion 22 is provided on the end surface of the first end of the bent pipe 2. The first connecting portion 13 can be inserted into the second connecting portion 22 to dock the first end of the straight pipe 1 with the first end of the bent pipe 2.

[0055] Specifically, in this embodiment, the first end of the straight pipe 1 and the first end of the elbow pipe 2 are provided with a first connecting portion 13 and a second connecting portion 22 that can be inserted into each other, making the butt joint between the straight pipe 1 and the elbow pipe 2 more reliable. In practical applications, the first end of the straight pipe 1 and the first end of the elbow pipe 2 can be respectively designed in a concave and convex structural form. For example, the outer surface of the first connecting portion 13 fits with the inner surface of the second connecting portion 22, or the inner surface of the first connecting portion 13 fits with the outer surface of the second connecting portion 22 to achieve the purpose of mutual socketing.

[0056] In practical applications, the outer diameters of the first connecting portion 13 and the second connecting portion 22 can be designed to be smaller than the outer diameters of the first convex portion 21 and the external thread area 11, so as to facilitate the threaded connection between the locking member 3 and the straight pipe 1 and improve the assembly efficiency.

[0057] Optionally, as Figures 1 to 3 shown, the pipeline assembly further includes a sealing ring 5, and the sealing ring 5 is arranged between the first end of the straight pipe 1 and the first end of the elbow pipe 2 to seal the butt joint between the straight pipe 1 and the elbow pipe 2.

[0058] Specifically, in this embodiment, according to the specific insertion form of the first connecting portion 13 and the second connecting portion 22, the setting of the sealing ring 5 enables the butt joint between the straight pipe 1 and the elbow pipe 2 to be sealed by the sealing ring 5, improving the sealing performance of the entire pipeline structure.

[0059] Optionally, as Figures 1 to 3 shown, the outer surface of the first connecting portion 13 and the inner surface of the second connecting portion 22 are both provided with stepped surfaces, enabling the first connecting portion 13 to be inserted inside the second connecting portion 22. The sealing ring 5 is sleeved on the first connecting portion 13 and is located between the stepped surface of the first connecting portion 13 and the end surface of the second connecting portion 22. Or,

[0060] the inner surface of the first connecting portion 13 and the outer surface of the second connecting portion 22 are both provided with stepped surfaces, enabling the second connecting portion 22 to be inserted inside the first connecting portion 13. The sealing ring 5 is sleeved on the second connecting portion 22 and is located between the stepped surface of the second connecting portion 22 and the end surface of the first connecting portion 13.

[0061] Specifically, in this embodiment, the outer surface of the first connection part 13 and the inner surface of the second connection part 22 are provided with stepped surfaces, so that the outer side of the first connection part 13 and the inner side of the second connection part 22 form a convex-concave structure, so as to achieve the plug-in docking of the first connection part 13 and the second connection part 22. In this docking structure, by sleeve-fitting the sealing ring 5 on the first connection part 13, it can be clamped between the stepped surface of the first connection part 13 and the end surface of the second connection part 22 (the first end of the elbow 2), so as to achieve sealing of the docking point.

[0062] The stepped surface provided on the inner surface of the first connection part 13 and the outer surface of the second connection part 22 forms a convex-concave structure between the outer side of the second connection part 22 and the inner side of the first connection part 13, thereby realizing the plug-in docking of the first connection part 13 and the second connection part 22. In this docking structure, the sealing ring 5 is sleeved on the second connection part 22 so that it can be clamped between the stepped surface of the second connection part 22 and the end surface of the first connection part 13 (the first end of the straight pipe 1), thereby realizing the sealing of the docking point.

[0063] Optionally, a thread locking adhesive is provided between the external thread area 11 and the internal thread area 32. By providing the thread locking adhesive between the external thread area 11 and the internal thread area 32, the connection between the external thread area 11 and the internal thread area 32 of the locking member 3 is tightened to prevent the locking member 3 from loosening and disengaging to cause connection failure or relative rotation between the straight pipe 1 and the bent pipe 2 to hit other surrounding parts, thereby improving its reliability.

[0064] According to the second aspect of the present invention, Figure 6 As shown, an oil cooler assembly is provided, comprising the pipeline assembly described in the first aspect and an oil cooler 4 connected to the pipeline assembly.

[0065] Specifically, the oil cooler 4 is an important cooling device in the hydraulic system, and plays a certain cooling role for the hydraulic oil inside the hydraulic system. The present application connects the pipeline assembly provided in the first aspect to the oil cooler 4, so that the oil cooler 4 can be connected and communicated with other hydraulic devices through the pipeline assembly. The pipeline assembly provided in the first aspect of the utility model has a low assembly difficulty, and the external interface has a certain degree of freedom, which improves the flexibility of the oil cooler assembly layout and reduces the assembly difficulty of the entire oil cooler assembly.

[0066] Alternatively, if Figure 6 As shown, the oil cooler 4 is provided with a liquid inlet 42 or a liquid outlet 41, and the second end of the straight pipe 1 is connected to the liquid inlet 42 or the liquid outlet 41, and the connection method can be screw connection or welding, etc., which is not limited in the present invention.

[0067] Alternatively, if Figures 4 to 6As shown, a plurality of the straight pipes 1 and a plurality of the bent pipes 2 are respectively provided, and the plurality of straight pipes 1 and the plurality of bent pipes 2 are alternately connected. The number of the locking members 3 matches the number of the straight pipes 1 and the bent pipes 2. For example, the oil cooler assembly includes two or three sets of straight pipes 1, bent pipes 2 and locking members 3 to further increase the degree of freedom of the orientation of the external interfaces of the pipeline assembly of the oil cooler assembly.

[0068] For example, in one embodiment, the oil cooler assembly includes two sets of straight pipes 1, locking members 3 and bent pipes 2. The second end of the first straight pipe 1 is connected to the liquid inlet 42 or the liquid outlet 41 of the oil cooler 4. The first end of the first straight pipe 1 is connected to the first end of the first bent pipe 2 through the first locking member 3. The second end of the second straight pipe 1 is connected to the second end of the first bent pipe 2. The first end of the second bent pipe 2 is connected to the first end of the second straight pipe 1 through the second locking member 3. The second end of the second bent pipe 2 is used to connect other hydraulic devices.

[0069] In the above embodiment, by sequentially connecting the first straight pipe 1, the first locking member 3, the first bent pipe 2, the second straight pipe 1, the second locking member 3, and the second bent pipe 2, the finally connected pipeline assembly has a higher degree of freedom than the pipeline assembly formed by a set of straight pipes and bent pipes, forming a pipeline structure with two degrees of freedom at the second end of the second bent pipe 2, which is more conducive to the connection between the end of the pipeline structure (i.e., the second end of the second bent pipe 2) and other hydraulic devices, and realizes multi-angle and flexible position adjustment of the pipe orifice at the end of the pipeline structure.

[0070] In another embodiment, the oil cooler assembly further includes a third straight pipe 1, a third locking member 3 and a third bent pipe 2. Among them, on the basis of the above embodiment, the second end of the third straight pipe 1 is connected to the second end of the second bent pipe 2. The first end of the third bent pipe 2 is connected to the first end of the third straight pipe 1 through the third locking member 3. The second end of the third bent pipe 2 is used to connect other hydraulic devices.

[0071] In the above embodiment, by sequentially adding the third straight pipe 1, the third locking member 3 and the third bent pipe 2, the finally connected pipeline structure has a higher degree of freedom of the external interface than the pipeline assembly formed by one or two sets of straight pipes and bent pipes, forming a pipeline structure with three degrees of freedom at the second end of the third bent pipe 2, which is more conducive to the connection between the end of the pipeline structure (i.e., the second end of the third bent pipe 2) and other hydraulic devices, and realizes multi-angle and flexible position adjustment of the pipe orifice at the end of the pipeline structure.

[0072] In the above embodiments, a set of pipeline components (i.e., a structure composed of a straight pipe, a locking member, and a bent pipe) can form a rotating joint. By providing two or three rotating joints, the rotation of the pipeline end interface can be achieved, and the pipeline interface can be adjusted in any direction. Among them, setting three rotating joints can form a three-degree-of-freedom operation of the end structure, flexibly meeting the liquid path connection of two devices in various position states.

[0073] According to the third aspect of the present invention, referring to Figure 6 , a hydraulic system is provided, including: the oil cooler assembly described in the second aspect, or the pipeline assembly described in the first aspect.

[0074] Specifically, in this embodiment, the hydraulic system usually includes an oil cooler 4 to cool the hydraulic oil in the hydraulic system. By adopting the oil cooler 4 assembly provided in the second aspect of the present invention, or the pipeline assembly provided in the first aspect, the angle problem of the pipeline interface of the oil cooler 4 is solved, making the connection between the oil cooler 4 and other devices more flexible and improving the integration degree of the hydraulic system. In addition, due to the structural design between the straight pipe 1, the locking member 3, and the bent pipe 2, the assembly difficulty of the pipeline component part is reduced.

[0075] According to the fourth aspect of the present invention, a transmission is provided, including: the hydraulic system described in the third aspect, or the oil cooler assembly described in the second aspect, or the pipeline assembly described in the first aspect. That is, a transmission composed of the hydraulic system provided in the third aspect, or the oil cooler assembly described in the second aspect, or the pipeline assembly described in the first aspect. Due to the advantages of integration and easy assembly of the hydraulic system, the structure of the transmission can be more compact, while improving the integration degree of the transmission and reducing the assembly difficulty.

[0076] According to the fifth aspect of the present invention, a power assembly is provided, including: the transmission described in the fourth aspect, or the hydraulic system described in the third aspect, or the oil cooler assembly described in the second aspect, or the pipeline assembly described in the first aspect. That is, a power assembly formed by adopting the transmission provided in the fourth aspect. Due to the advantages of integration of the transmission, the structure of the power assembly can be more compact, while improving the integration degree of the power assembly and reducing the assembly difficulty.

[0077] It should be noted that the power assembly provided in this embodiment can be a fuel assembly composed of an engine and a transmission of a vehicle, or a hybrid power assembly composed of an engine, a motor, and a transmission, or a pure electric power assembly including a motor and a transmission.

[0078] According to a sixth aspect of the present utility model, there is provided a vehicle, including the powertrain described in the fifth aspect, or the transmission described in the fourth aspect, or the hydraulic system described in the third aspect, or the oil cooler assembly described in the second aspect, or the pipeline assembly described in the first aspect.

[0079] Specifically, in a vehicle, the powertrain is the power source of the vehicle. By adopting the powertrain provided in the fifth aspect of the present utility model, it can improve the flexibility of the layout of internal components of the vehicle. On the other hand, the locking member 3 can also fix the pipeline connection, preventing the pipeline from rotating and hitting other structures during the operation of the vehicle, and increasing the reliability of the pipeline structure.

[0080] In the above embodiments, the differences between the various embodiments are mainly described. As long as the different optimized features between the various embodiments are not contradictory, they can be combined to form a more optimal embodiment. Considering the simplicity of the text, it will not be elaborated here.

[0081] Although some specific embodiments of the present utility model have been described in detail by way of examples, those skilled in the art should understand that the above examples are only for illustration and not for limiting the scope of the present utility model. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present utility model. The scope of the present utility model is defined by the appended claims.

Claims

1. A pipeline assembly, characterized in that: include: A straight pipe (1), wherein a first end of the straight pipe (1) is provided with an external threaded area (11); A curved pipe (2), wherein the first end of the curved pipe (2) is capable of butting against the first end of the straight pipe (1), and the first end of the curved pipe (2) is provided with a first protruding portion (21); A locking member (3), wherein the locking member (3) is provided with an internal threaded area (32), and the locking member (3) can be rotatably sleeved on the first end of the curved pipe (2) from the second end of the curved pipe (2), and the first protrusion (21) can prevent the locking member (3) from being separated from the first end of the curved pipe (2); When the locking member (3) locks the straight pipe (1) and the bent pipe (2), the internal threaded area (32) is threadedly connected to the external threaded area (11), and the locking member (3) is pressed against the first protruding portion (21).

2. The pipeline assembly according to claim 1, characterized in that: The first protruding portion (21) surrounds and protrudes from the outer circumference of the bent pipe (2), and the locking member (3) is further provided with a crimping portion (31), and the crimping portion (31) protrudes from the inner surface of the locking member (3); When the locking member (3) locks the straight pipe (1) and the bent pipe (2), the side of the crimping portion (31) close to the straight pipe (1) is pressed against the side of the first protruding portion (21) away from the straight pipe (1).

3. The pipeline assembly according to claim 2, characterized in that: The curved pipe (2) is an integrally formed structure, and the inner diameter of the crimping portion (31) is larger than the outer diameter of the curved pipe (2) and smaller than the outer diameter of the first protruding portion (21).

4. The pipeline assembly according to claim 1, characterized in that: A second protrusion (12) is provided on the outer periphery of the straight pipe (1), and the second protrusion (12) is located on a side of the external threaded area (11) away from the bent pipe (2).

5. The pipeline assembly according to claim 1, characterized in that: A first connecting portion (13) is provided on the end surface of the first end of the straight pipe (1), and a second connecting portion (22) is provided on the end surface of the first end of the curved pipe (2); the first connecting portion (13) can be plugged into the second connecting portion (22) so that the first end of the straight pipe (1) is butted against the first end of the curved pipe (2).

6. The pipeline assembly according to claim 5, characterized in that: It also comprises a sealing ring (5), which is arranged between the first end of the straight pipe (1) and the first end of the curved pipe (2) to seal the joint between the straight pipe (1) and the curved pipe (2).

7. The pipeline assembly according to claim 6, characterized in that: The outer surface of the first connecting part (13) and the inner surface of the second connecting part (22) are both provided with stepped surfaces, so that the first connecting part (13) can be plugged into the inner side of the second connecting part (22), and the sealing ring (5) is sleeved on the first connecting part (13) and is located between the stepped surface of the first connecting part (13) and the end surface of the second connecting part (22); or, The inner surface of the first connecting part (13) and the outer surface of the second connecting part (22) are both provided with step surfaces, so that the second connecting part (22) can be plugged into the inner side of the first connecting part (13); the sealing ring (5) is sleeved on the second connecting part (22) and is located between the step surface of the second connecting part (22) and the end surface of the first connecting part (13).

8. The pipeline assembly according to claim 1, characterized in that: A thread locking adhesive is provided between the external thread area (11) and the internal thread area (32).

9. An oil cooler assembly, characterized in that: include: The pipeline assembly according to any one of claims 1 to 8 and an oil cooler (4) connected to the pipeline assembly.

10. The oil cooler assembly according to claim 9, characterized in that: The oil cooler (4) is provided with a liquid inlet (42) and a liquid outlet (41), and the second end of the straight pipe (1) is connected to the liquid inlet (42) or the liquid outlet (41).

11. The oil cooler assembly according to claim 10, characterized in that: The straight pipes (1) and the curved pipes (2) are each provided in plurality, the plurality of straight pipes (1) and the plurality of curved pipes (2) are alternately connected, and the number of the locking members (3) matches the number of the straight pipes (1) and the curved pipes (2).

12. A hydraulic system, characterized in that: include: An oil cooler assembly as claimed in any one of claims 9 to 11, or a piping assembly as claimed in any one of claims 1 to 8.

13. A transmission, characterized in that: include: The hydraulic system of claim 12, or the oil cooler assembly of any one of claims 9 to 11, or the piping assembly of any one of claims 1 to 8.

14. A powertrain, characterized in that: include: The transmission of claim 13, or the hydraulic system of claim 12, or the oil cooler assembly of any one of claims 9 to 11, or the piping assembly of any one of claims 1 to 8.

15. A vehicle, characterized in that: include: The powertrain of claim 14, or the transmission of claim 13, or the hydraulic system of claim 12, or the oil cooler assembly of any one of claims 9 to 11, or the piping assembly of any one of claims 1 to 8.

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