A foldable oil delivery pipeline device and vehicle

Abstract

The application provides a vehicle-mounted foldable oil conveying pipeline device and a vehicle, which comprises: a rotary support device, which is installed on the vehicle and is used for realizing horizontal rotation; a rotating base assembly, which is installed on the upper surface of the rotary support device, rotates with the rotary support device, and supports the upper oil conveying device; a first oil pipe assembly, one end of which is rotatably connected to the rotating base assembly, and the other end of which is connected to other oil pipe assemblies, and which is used as an oil conveying channel; a base oil cylinder, which is used for rotating the first oil pipe assembly; and at least one other oil pipe assembly, which is sequentially connected to the end of the first oil pipe assembly and is used as an oil conveying channel. The intermediate steel pipe of the oil conveying device is used as an oil conveying channel and directly as an extension arm of the entire oil conveying pipeline device, the position and angle of the oil conveying pipe are changed through the swing of the oil cylinder, and the oil can be directly conveyed through the intermediate pipeline to realize large-range working radius and automatic transportation.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of oil pipeline, and particularly relates to a foldable oil pipeline device capable of being carried on a vehicle and a vehicle. BACKGROUND

[0002] The main function of the oil pipeline device is to connect an oil depot and a tank truck to complete oil delivery, and it is a special equipment widely used in port professional wharfs and oil depots. The main structure mainly comprises a pipeline, a rotary joint, a supporting device and the like, and is in the form of a foldable pipeline to ensure smooth delivery of oil in the pipeline.

[0003] At present, the oil delivery arm device structure used in port wharfs is relatively large, and a lightweight foldable oil pipeline device capable of being carried on a vehicle is needed when the next stage of oil storage in an oil depot and field oil storage is performed to realize long-distance automatic delivery of oil.

[0004] The novel chassis of the oil delivery arm provided in patent CN201720549340.9 is mainly applied to port professional wharfs and is not suitable for being installed on a general chassis of a vehicle to complete oil delivery work in urban and field oil depots.

[0005] Patent CN112282369A provides a concrete pump truck arm frame, and a pipeline device is suspended and installed on the outer side of the concrete pump truck arm frame to realize oil delivery, but the weight of the arm frame box body causes the entire arm frame device to be too heavy, and the pipeline is installed on the outer side of the box body, causing the overall size of the device after being folded to be large. SUMMARY

[0006] The present application aims to overcome the deficiencies in the prior art and provide a lightweight foldable oil pipeline device capable of being carried on a vehicle. The middle steel pipe of the oil delivery device serves as an oil delivery channel and directly serves as an extension arm of the entire oil pipeline device. The position and angle of the oil delivery pipe can be changed directly through the swing of the oil cylinder, and oil can be delivered over a large working radius and automatically transported through the middle pipeline.

[0007] To achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0008] In a first aspect, the present application provides a foldable oil pipeline device capable of being carried on a vehicle, comprising:

[0009] A rotary supporting device can be installed on a vehicle to realize horizontal rotation.

[0010] A rotary base assembly is installed on the upper surface of the rotary supporting device and can rotate with the rotary supporting device to support the entire upper oil delivery device.

[0011] The first oil pipe assembly is rotatably connected to the rotating base assembly at one end and is connectable to other oil pipe assemblies at the other end for serving as a conveying passage of oil;

[0012] The base oil cylinder is used to rotate the first oil pipe assembly.

[0013] The at least one other oil pipe assembly is sequentially connected to the end of the first oil pipe assembly for serving as a conveying passage of oil.

[0014] Further, the other oil pipe assemblies include a second oil pipe assembly, a third oil pipe assembly and a fourth oil pipe assembly.

[0015] The second oil pipe assembly is connected to the first oil pipe assembly at one end and is connected to the third oil pipe assembly at the other end; the third oil pipe assembly is connected to the second oil pipe assembly at one end and is connected to the fourth oil pipe assembly at the other end.

[0016] The device further includes a first oil cylinder installed on the first oil pipe assembly, a second oil cylinder installed on the second oil pipe assembly and a third oil cylinder installed on the third oil pipe assembly.

[0017] The first oil cylinder is used to drive the second oil pipe assembly to rotate, the second oil cylinder is used to drive the third oil pipe assembly to rotate and the third oil cylinder is used to drive the fourth oil pipe assembly to rotate.

[0018] The first oil cylinder, the second oil cylinder and the third oil cylinder cooperate with each other to change the position and angle of the oil conveying pipe.

[0019] Further, the rotating base assembly includes a first elbow, an upper cover, a bearing elbow, a shaft sleeve and a base.

[0020] The base includes a base ear plate and a base lower support plate.

[0021] The bearing elbow is supported on the base through the left and right shaft sleeves, the upper cover clamps the left and right shaft sleeves through bolts, the bearing elbow is connected to the first elbow through a rotary joint by bolts, axial rotation swing is realized through the rotary joint, the first elbow is connected to the center of the base by bolts, and the base is connected to the rotary support device by bolts.

[0022] Further, the first oil pipe assembly includes a first oil pipe, a connecting ear plate, a first frame pressing plate, a first lower frame, an upper and lower frame connecting plate, an upper frame and a second elbow.

[0023] The first oil pipe is connected to the bearing elbow at the bottom through bolts, and the second elbow is installed at the top of the first oil pipe; the upper frame and the first lower frame are clamped on the surface of the first oil pipe through the first frame pressing plate respectively, and the upper and lower frames are connected into one body through the upper and lower frame connecting plate; the two connecting ear plates are connected to the upper and lower frames through bolts respectively.

[0024] The upper frame and the first lower frame adopt a rectangular steel pipe truss structure. The rectangular steel pipes are arranged along the length direction of the oil conveying device to improve the bending resistance of the middle oil conveying pipe. At the same time, the hinge point of the oil cylinder is also arranged on the frame to reduce the stress on the oil conveying pipeline.

[0025] Furthermore, the hinge point of the base cylinder barrel is installed on the base ear plate A, and the hinge point of the base cylinder piston rod is installed on the connecting ear plate on the first lower frame. The first oil pipe assembly swings around the rotary joint by extending and retracting the base cylinder piston rod.

[0026] Furthermore, the second tubing assembly includes a first elbow assembly, a second lower frame, a second frame pressure plate, a second tubing, and a second elbow assembly;

[0027] The second oil pipe is equipped with a second cylinder lug plate;

[0028] The second elbow assembly is provided with a second elbow cylinder lug plate;

[0029] The first elbow assembly is bolted to the second elbow assembly via a swivel joint. The bottom of the second oil pipe is connected to the first elbow assembly, and the top is connected to the second elbow assembly. The second lower frame is secured to the lower half of the second oil pipe by a second frame clamping plate.

[0030] The first cylinder barrel hinge point is installed on the connecting lug plate on the upper frame, and the first cylinder piston rod hinge point is installed on the lug plate of the first elbow cylinder. The second oil pipe assembly swings around the rotary joint by extending and retracting the first cylinder piston rod.

[0031] Furthermore, the third tubing assembly includes a third elbow assembly, a third tubing, and a third elbow;

[0032] The third elbow assembly is provided with a third elbow cylinder lug plate; the third oil pipe is provided with a third cylinder lug plate;

[0033] The third elbow assembly is bolted to the second elbow assembly via a swivel joint. The bottom of the third oil pipe is connected to the third elbow assembly, and the top is connected to the third elbow.

[0034] The second cylinder's cylinder barrel hinge point is mounted on the second cylinder lug A on the second oil pipe, and the second cylinder's piston rod hinge point is mounted on the connecting rod assembly. Furthermore, the connecting rod assembly is also connected to the second elbow cylinder lug A and the third elbow cylinder lug A. The connecting rod assembly is used to achieve a 180-degree angle change between the third oil pipe assembly and the second oil pipe assembly. The extension and retraction of the second cylinder's piston rod is used to achieve the oscillation of the third oil pipe assembly.

[0035] Furthermore, the fourth oil pipe assembly includes a fourth elbow assembly and a fourth oil pipe;

[0036] The fourth elbow assembly is provided with a fourth elbow cylinder lug plate;

[0037] The fourth elbow assembly is connected to the third elbow via a rotary joint, and the fourth oil pipe is fixed to the bottom of the fourth elbow assembly with bolts to achieve oil delivery.

[0038] The hinge point of the third cylinder barrel is installed on the ear plate A of the third cylinder, and the hinge point of the third cylinder piston rod is installed on the ear plate A of the fourth elbow cylinder. The extension and retraction of the third cylinder piston rod is used to realize the swing of the fourth oil pipe assembly.

[0039] In a second aspect, the present invention provides a vehicle, including a vehicle chassis and a vehicle-mountable foldable fuel line device as described in the first aspect, mounted on the vehicle chassis.

[0040] Compared with the prior art, the beneficial effects achieved by the present invention are as follows:

[0041] 1. The intermediate steel pipe of the oil conveying device serves as both an oil conveying channel and an extension arm of the entire oil conveying pipeline device. The position and angle of the oil conveying pipe can be changed directly by the swing of the hydraulic cylinder. The oil can be transported automatically over a wide working radius through the intermediate pipeline. Compared with the boom of a concrete pump truck, this invention saves the weight of the boom box and meets the requirements of lightweight design.

[0042] 2. The rotating base assembly of the oil transfer device is supported by two bushings to bear the weight of the entire oil transfer device, reducing the stress on the elbows and other components of the bottom rotating assembly;

[0043] 3. For the lower part of the first and second oil pipeline sections, an assembled frame is used to increase the strength and rigidity of these two pipeline sections. At the same time, the hinge point of the oil cylinder is also arranged on the frame, which reduces the stress on the oil pipeline. The assembled frame adopts a rectangular steel pipe truss structure, with the rectangular steel pipes arranged along the unfolding direction of the oil conveying device to improve the bending resistance of the middle oil pipeline.

[0044] 4. The elbows of the oil conveying device can be made of stainless steel to increase the strength of the bends, while the straight pipes can be made of aluminum alloy to reduce weight. The elbows and straight pipes are connected by flange bolts.

[0045] 5. The oil cylinder is arranged between two adjacent oil pipeline sections, which reduces the lateral width of the oil delivery device.

[0046] 6. This oil transfer device can be installed on a vehicle chassis. Its retracted state has a small size, which can meet the needs of vehicle-mounted transportation.

[0047] 7. Compared with fluid conveying boom devices in other similar industries, it can greatly reduce the weight of the entire conveying device; Attached Figure Description

[0048] Figure 1 The structural layout diagram is for patent CN201720549340.9;

[0049] Figure 2 This is a structural layout diagram of patent CN112282369A;

[0050] Figure 3 This is a diagram showing the operational unfolded state of a vehicle-mounted foldable oil pipeline device according to the present invention.

[0051] Figure 4 This is a diagram showing the transport and retracted state of a vehicle-mounted foldable oil pipeline device according to the present invention;

[0052] Figure 5 This is a structural diagram of the rotating base assembly of the present invention mounted on the rotary support device via a rotary joint;

[0053] Figure 6 This is a structural diagram of the first tubing assembly of the present invention;

[0054] Figure 7 This is a structural diagram of the second tubing assembly of the present invention;

[0055] Figure 8 This is a structural diagram of the third tubing assembly of the present invention;

[0056] Figure 9 This is a structural diagram of the fourth tubing assembly of the present invention.

[0057] In the diagram: 1. Rotary support device; 2. Rotary joint; 3. Rotary base assembly; 4. First oil pipe assembly; 5. First oil cylinder; 6. Second oil pipe assembly; 7. Second oil cylinder; 8. Connecting rod assembly; 9. Third oil pipe assembly; 10. Third oil cylinder; 11. Fourth oil pipe assembly; 12. Base cylinder;

[0058] 3-1. First elbow; 3-2. Upper pressure cap; 3-3. Bearing elbow; 3-4. Bushing; 3-5. Base; 3-5A. Base ear plate; 3-5B. Lower support plate of base;

[0059] 4-1, First oil pipe; 4-2, Connecting ear plate; 4-3, First frame pressure plate; 4-4, First lower frame; 4-5, Upper and lower frame connecting plate; 4-6, Upper frame; 4-7, Second elbow;

[0060] 6-1, First elbow assembly; 6-1A, First elbow cylinder ear plate; 6-2, Second lower frame; 6-3, Second frame pressure plate; 6-4, Second oil pipe; 6-4A, Second cylinder ear plate; 6-5, Second elbow assembly; 6-5A, Second elbow cylinder ear plate;

[0061] 9-1, Third elbow assembly; 9-1A, Third elbow cylinder lug plate; 9-2, Third oil pipe; 9-2A, Third cylinder lug plate; 9-3, Third elbow;

[0062] 11-1, Fourth elbow assembly; 11-1A, Fourth elbow cylinder lug plate; 11-2, Fourth oil pipe. Detailed Implementation

[0063] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0064] In the description of this embodiment, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this embodiment and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this embodiment. Example

[0065] This embodiment provides a vehicle-mounted foldable oil pipeline device.

[0066] like Figure 3 The diagram shows the working unfolded state of a vehicle-mounted foldable oil pipeline device: the bottom of the slewing support device 1 can be installed on the vehicle chassis, following the vehicle to complete the operation requirements.

[0067] like Figure 5 As shown: The rotating base assembly 3 is installed on the upper surface of the slewing support device 1. On the one hand, it follows the slewing support device 1 to achieve 360-degree rotation, and on the other hand, it provides bottom support for the entire upper oil conveying device. The load-bearing elbow 3-3 is supported on the base 3-5 by the left and right bushings 3-4. The upper pressure cover 3-2 is fastened to the left and right bushings 3-4 by bolts. The load-bearing elbow 3-3 is connected to the first elbow 3-1 by bolts through the rotary joint 2, which enables axial rotation and swing. The first elbow 3-1 is connected to the rotation center of the base 3-5 by bolts. The base 3-5 is connected to the slewing support device 1 by bolts.

[0068] like Figure 6As shown: the first oil pipe assembly 4, the bottom of the first oil pipe 4-1 is connected to the load-bearing elbow 3-3 by bolts, and the second elbow 4-7 is installed on the top of the first oil pipe 4-1; the upper frame 4-6 and the first lower frame 4-4 are each clamped to the surface of the first oil pipe 4-1 by the first frame pressure plate 4-3, and the upper and lower frames are connected as one unit by the upper and lower frame connecting plates 4-5; the two connecting lugs 4-2 are respectively connected to the upper and lower frames by bolts. This prefabricated upper and lower frame adopts a rectangular steel pipe truss structure, with the rectangular steel pipes arranged along the length direction of the oil conveying device to improve the bending resistance of the middle oil conveying pipe, while the hinge point of the oil cylinder is also arranged on the frame, reducing the stress on the oil conveying pipeline.

[0069] The base cylinder 12 has its cylinder hinge point installed on the base ear plate 3-5A, and the base cylinder 12 has its piston rod hinge point installed on the connecting ear plate 4-2 on the first lower frame 4-4. The first oil pipe assembly 4 swings around the rotary joint 2 by extending and retracting the piston rod of the base cylinder 12.

[0070] like Figure 7 As shown: The second oil pipe assembly 6 and the first elbow assembly 6-1 are bolted to the second elbow 4-7 via a swivel joint 2. The bottom of the second oil pipe 6-4 is connected to the first elbow assembly 6-1, and the top is connected to the second elbow assembly 6-5. The second lower frame 6-2 is clamped to the lower half of the third oil pipe 6-4 by the second frame pressure plate 6-3.

[0071] The first hydraulic cylinder 5's cylinder hinge point is installed on the connecting lug 4-2 on the upper frame 4-6, and the first hydraulic cylinder 5's piston rod hinge point is installed on the first elbow hydraulic cylinder lug 6-1A. The second oil pipe assembly 6 swings around the rotary joint 2 by extending and retracting the first hydraulic cylinder 5's piston rod.

[0072] like Figure 8 As shown: The third oil pipe assembly 9 and the third elbow assembly 9-1 are bolted to the second elbow assembly 6-5 via a swivel joint 2. The bottom of the third oil pipe 9-2 is connected to the third elbow assembly 9-1, and the top is connected to the third elbow 9-3.

[0073] The cylinder bore hinge of the second cylinder 7 is mounted on the second cylinder lug 6-4A on the second oil pipe 6-4. The piston rod hinge of the second cylinder 7 is mounted on the connecting rod assembly 8. Furthermore, the connecting rod assembly 8 is also connected to the second elbow cylinder lug 6-5A and the third elbow cylinder lug 9-1A. The connecting rod assembly 8 is used to achieve a 180-degree angle change between the third oil pipe assembly 9 and the second oil pipe assembly 6. The extension and retraction of the piston rod of the second cylinder 7 is used to achieve the oscillation of the third oil pipe assembly 9.

[0074] like Figure 9 As shown: The fourth oil pipe assembly 11 and the fourth elbow assembly 11-1 are connected to the third elbow 9-3 through the rotary joint 2. The fourth oil pipe 11-2 is fixed to the fourth elbow assembly 11-1 at the bottom by bolts to realize oil transportation.

[0075] The cylinder hinge point of the third cylinder 10 is installed on the ear plate 9-2A of the third cylinder, and the piston rod hinge point of the third cylinder 10 is installed on the ear plate 11-1A of the fourth elbow cylinder. The extension and retraction of the piston rod of the third cylinder 10 is used to realize the swing of the third oil pipe assembly 9. Example

[0076] This embodiment provides a vehicle, including a vehicle chassis and a vehicle-mounted foldable oil pipeline device as described in Embodiment 1, mounted on the vehicle chassis.

[0077] The intermediate steel pipe of the oil conveying device of this application serves as both an oil conveying channel and an extension arm of the entire oil conveying pipeline device. The position and angle of the oil conveying pipe can be changed directly by the swing of the hydraulic cylinder. The oil can be transported automatically over a wide working radius through the intermediate pipeline. Compared with the boom of a concrete pump truck, this invention saves the weight of the boom box and meets the requirements of lightweight design.

[0078] The rotating base assembly of the oil transfer device in this application is supported by two bushings to bear the weight of the entire oil transfer device, thereby reducing the stress on the elbows and other components of the bottom rotating assembly.

[0079] The first and second sections of the oil pipeline in this application are equipped with a prefabricated frame to increase the strength and rigidity of the two pipeline sections. At the same time, the hinge point of the oil cylinder is also arranged on the frame to reduce the stress on the oil pipeline. The prefabricated frame adopts a rectangular steel pipe truss structure, and the rectangular steel pipe is arranged along the length direction of the oil conveying device to improve the bending resistance of the middle oil conveying pipe.

[0080] The elbow part of the oil conveying device of this application can be made of stainless steel to increase the strength of the bend, and the straight part can be made of aluminum alloy to reduce the weight. The elbow and the straight part are connected by flange bolts.

[0081] The hydraulic cylinders in this application are arranged between two adjacent oil pipeline sections, which reduces the lateral width of the oil delivery device.

[0082] The oil transfer device of this application can be installed on the vehicle chassis. Its retracted state has a small external size and can meet the vehicle transportation function.

[0083] Compared to fluid conveying boom devices in other similar industries, this application can significantly reduce the weight of the entire conveying device;

[0084] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature, and in the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0085] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0086] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0087] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0088] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention.

Claims

1. A vehicle-mounted foldable oil pipeline device, characterized in that, include: A slewing support device is used to achieve horizontal rotation; The rotating base assembly is installed on the upper surface of the slewing support device and can rotate with the slewing support device, providing bottom support for the upper oil conveying device. The first oil pipe assembly has one end rotatably connected to the rotating base assembly, and the other end can be connected to other oil pipe assemblies to serve as a channel for transporting oil. The base cylinder is used to rotate the first oil pipe assembly by an angle. At least one other tubing assembly is sequentially connected end-to-end to the end of the first tubing assembly to serve as a channel for transporting oil. The rotating base assembly includes a first elbow, an upper pressure cap, a load-bearing elbow, a bushing, and a base; The base includes a base ear plate and a base lower support plate; The load-bearing elbow is supported on the base by the left and right bushings. The upper cover is clamped to the left and right bushings by bolts. The load-bearing elbow is connected to the first elbow by bolts through a rotary joint. The rotary joint enables axial rotation and swing. The first elbow is connected to the rotation center of the base by bolts. The base is connected to the rotary support device by bolts. The first oil pipe assembly includes a first oil pipe, a connecting lug, a first frame pressure plate, a first lower frame, an upper and lower frame connecting plate, an upper frame, and a second elbow; The bottom of the first oil pipe is connected to the load-bearing elbow by bolts, and the second elbow is installed on the top of the first oil pipe; the upper frame and the first lower frame are each clamped on the surface of the first oil pipe by the first frame pressure plate, and the upper and lower frames are connected into one piece by the upper and lower frame connecting plates; the two connecting ear plates are respectively connected to the upper and lower frames by bolts.

2. The vehicle-mounted foldable oil pipeline device according to claim 1, characterized in that, The other tubing assemblies include a second tubing assembly, a third tubing assembly, and a fourth tubing assembly; The second tubing assembly is connected at one end to the first tubing assembly and at the other end to the third tubing assembly; the third tubing assembly is connected at one end to the second tubing assembly and at the other end to the fourth tubing assembly. The device further includes a first hydraulic cylinder mounted on the first oil pipe assembly, a second hydraulic cylinder mounted on the second oil pipe assembly, and a third hydraulic cylinder mounted on the third oil pipe assembly; The first hydraulic cylinder is used to drive the second hydraulic pipe assembly to rotate, the second hydraulic cylinder is used to drive the third hydraulic pipe assembly to rotate, and the third hydraulic cylinder is used to drive the fourth hydraulic pipe assembly to rotate. The first, second, and third hydraulic cylinders work together to change the position and angle of the oil delivery pipe.

3. The vehicle-mounted foldable oil pipeline device according to claim 1, characterized in that, The upper frame and the first lower frame adopt a rectangular steel pipe truss structure, with the rectangular steel pipes arranged along the length direction of the oil conveying device.

4. The vehicle-mounted foldable oil pipeline device according to claim 1, characterized in that, The hinge point of the base cylinder barrel is installed on the base ear plate, and the hinge point of the base cylinder piston rod is installed on the connecting ear plate on the first lower frame. The first oil pipe assembly swings around the rotary joint by extending and retracting the base cylinder piston rod.

5. The vehicle-mounted foldable oil pipeline device according to claim 2, characterized in that, The second tubing assembly includes a first elbow assembly, a second lower frame, a second frame pressure plate, a second tubing, and a second elbow assembly; The second oil pipe is equipped with a second cylinder lug plate; The second elbow assembly is provided with a second elbow cylinder lug plate; The first elbow assembly is connected to the second elbow bolt via a swivel joint; the bottom of the second oil pipe is connected to the first elbow assembly, and the top is connected to the second elbow assembly; the second lower frame is clamped to the lower half of the second oil pipe by a second frame pressure plate; The first cylinder barrel hinge point is installed on the connecting lug plate on the upper frame, and the first cylinder piston rod hinge point is installed on the lug plate of the first elbow cylinder. The second oil pipe assembly swings around the rotary joint by extending and retracting the first cylinder piston rod.

6. The vehicle-mounted foldable oil pipeline device according to claim 5, characterized in that, The third tubing assembly includes a third elbow assembly, a third tubing, and a third elbow; The third elbow assembly is provided with a third elbow cylinder lug plate; the third oil pipe is provided with a third cylinder lug plate; The third elbow assembly is bolted to the second elbow assembly via a rotary joint; the bottom of the third oil pipe is connected to the third elbow assembly, and the top is connected to the third elbow. The second cylinder barrel hinge point is installed on the second cylinder ear plate on the second oil pipe, and the second cylinder piston rod hinge point is installed on the connecting rod assembly. In addition, the connecting rod assembly is also connected to the second elbow cylinder ear plate and the third elbow cylinder ear plate. The connecting rod assembly is used to achieve a 180-degree angle change between the third oil pipe assembly and the second oil pipe assembly; the extension and retraction of the piston rod of the second oil cylinder is used to achieve the swinging of the third oil pipe assembly.

7. The vehicle-mounted foldable oil pipeline device according to claim 6, characterized in that, The fourth oil pipe assembly includes a fourth elbow assembly and a fourth oil pipe; The fourth elbow assembly is provided with a fourth elbow cylinder lug plate; The fourth elbow assembly is connected to the third elbow via a rotary joint, and the fourth oil pipe is fixed to the fourth elbow assembly at the bottom via bolts to achieve oil delivery. The hinge point of the third cylinder barrel is installed on the ear plate of the third cylinder, and the hinge point of the third cylinder piston rod is installed on the ear plate of the fourth elbow cylinder. The extension and retraction of the third cylinder piston rod is used to realize the swing of the fourth oil pipe assembly.

8. A vehicle comprising a vehicle chassis and a vehicle-mountable foldable fuel line device as described in any one of claims 1-7, mounted on the vehicle chassis.

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