Lower folding type refueling crane pipe fixing device

Abstract

The invention relates to a lower folding type refueling crane pipe fixing device which comprises a refueling crane pipe body and a limiting mechanism. The limiting mechanism is used for connecting the refueling crane pipe body to the refueling trailer. The limiting mechanism comprises a first fixing plate, a locking seat, an elastic piece, a bolt block, a second fixing plate and an insertion hole; the first fixing plate is connected with the refueling trailer; the locking seat is connected with the first fixing plate; two ends of the elastic piece are respectively connected with the locking seat and the bolt block; the second fixing plate is connected with the refueling crane pipe main body; the jack is arranged on the base; the plug pin block is matched with the inserting hole, and when the plug pin block is inserted into the inserting hole, the refueling crane pipe body and the refueling trailer are connected. Compared with the prior art, by arranging the limiting mechanism and further arranging the auxiliary reinforcing mechanism, the requirement for the length of the refueling crane pipe can be met, stable fixing and limiting can be achieved, and single-side layout of the refueling crane pipe can be achieved.

Description

Technical Field

[0001] This invention relates to the field of aircraft pipeline refueling equipment technology, and in particular to a downward folding refueling arm fixing device. Background Technology

[0002] Currently, refueling support at domestic transport airports mainly relies on pipeline refueling trucks and tank refueling trucks, with pipeline refueling trucks including non-powered pipeline towed aircraft pipeline refueling equipment.

[0003] A pipeline refueling truck is a specialized device used to safely and quickly transfer aviation fuel from underground wells on the tarmac into aircraft fuel tanks at high flow rates. During the transfer, it filters impurities, dust, and moisture from the fuel and accurately calculates the transfer volume. The biggest difference between a pipeline refueling truck and a tanker refueling truck is that the pipeline refueling truck does not store fuel; it merely serves as a connector between the fuel depot and the aircraft. It can be viewed as a mobile fuel pump structure that extracts fuel from the underground wells on the tarmac and injects it into the aircraft. An arm, a retractable and movable tube, is used in a pipeline refueling truck to serve as an intermediate pipeline for extracting fuel from the underground wells and injecting it into the aircraft.

[0004] However, loading arms require a relatively long length, and existing loading arms often need to be installed on more than one side of the pipeline refueling truck, which affects their use. Furthermore, due to their length, the loading arms are difficult to fix and limit. If the fixing and limiting are unstable, it will affect the use of the loading arms and the movement of the pipeline refueling truck.

[0005] Therefore, there is an urgent need for a downward-folding refueling arm fixing device to meet the length requirements of the refueling arm and to achieve stable fixing and limiting. Summary of the Invention

[0006] The purpose of this invention is to overcome the defects of the prior art and provide a downward folding refueling arm fixing device. By setting a limiting mechanism and further setting an auxiliary reinforcement mechanism, it can meet the length requirements of the refueling arm and achieve stable fixing and limiting, and can realize a single-sided layout of the refueling arm.

[0007] The objective of this invention can be achieved through the following technical solutions: The purpose of this invention is to provide a downward-folding refueling arm fixing device, which includes a refueling arm body and a limiting mechanism. The limiting mechanism is used to connect the refueling arm body to a refueling trailer. The limiting mechanism includes a first fixing plate, a locking seat, an elastic element, a pin block, a second fixing plate, and a socket. The first fixing plate is connected to the refueling trailer. The locking seat is connected to the first fixing plate. The two ends of the elastic element are respectively connected to the locking seat and the pin block. The second fixing plate is connected to the refueling arm body. The socket is located on the top. The pin block cooperates with the socket, and when the pin block is inserted into the socket, the connection between the refueling arm body and the refueling trailer is achieved.

[0008] Furthermore, the refueling trailer is a pipeline refueling truck, which includes a fuel tank, a connector rack, a refueling trailer body, and an oil outlet pipe; the fuel tank and connector rack are both connected to the refueling trailer body; the two ends of the oil outlet pipe are respectively connected to the fuel tank and the refueling arm body; one end of the oil outlet pipe is connected to the refueling arm body through a fifth flange.

[0009] Furthermore, the elastic element is a spring; the pin block is slidably connected to the locking seat; when the pin block is inserted into the socket, the elastic element is in a free state or a compressed state, and the elastic element is further compressed to separate the pin block and the socket.

[0010] Furthermore, the downward-folding refueling arm fixing device also includes an auxiliary reinforcement mechanism; the auxiliary reinforcement mechanism is used to connect the main body of the refueling arm to the refueling trailer; the auxiliary reinforcement mechanism includes a first connecting frame, a connecting shaft, a rotating component, a cable, and an arm connecting lug; the first connecting frame is connected to the refueling trailer; the connecting shaft is connected to the first connecting frame; the rotating component is connected to the connecting shaft; the arm connecting lug is connected to the main body of the refueling arm; the two ends of the cable are rotatably connected to the rotating component and the arm connecting lug, respectively.

[0011] Furthermore, the cable includes a first ear plate, a cable body, and a second ear plate; the first ear plate and the second ear plate are respectively connected to both ends of the cable body; the first ear plate is hinged to the rotating component; and the second ear plate is hinged to the loading arm connecting ear plate.

[0012] Furthermore, the first connecting frame is provided with an arm support and a cable connection; the arm support is connected to the main body of the refueling arm and is used to support the main body of the refueling arm; the cable connection is connected to the connecting shaft and is used to further connect the cable.

[0013] Furthermore, the rotating component is rotatably connected to the connecting shaft via a bearing.

[0014] Furthermore, the main body of the refueling arm includes a first pipe section, a second pipe section, a third pipe section, a fourth pipe section, and a fifth pipe section; the first pipe section, the second pipe section, the third pipe section, the fourth pipe section, and the fifth pipe section are connected in sequence.

[0015] Furthermore, the first pipe section, the second pipe section, the third pipe section, the fourth pipe section, and the fifth pipe section are all arranged on the same side of the refueling trailer.

[0016] Furthermore, the main body of the refueling arm also includes a first flange, a second flange, a third flange, a fourth flange, and a refueling connector; one end of the first pipe section is connected to one end of the second pipe section through the first flange; the other end of the second pipe section is connected to one end of the third pipe section through the second flange; the other end of the third pipe section is connected to one end of the fourth pipe section through the third flange; and the other end of the fourth pipe section is connected to one end of the fifth pipe section through the fourth flange.

[0017] Furthermore, the other end of the fifth pipe section is connected to a refueling connector, which is used to connect to a ground well valve on the apron to introduce aviation fuel.

[0018] Furthermore, the other end of the first pipe section is connected to the fuel tank installed on the refueling trailer.

[0019] Furthermore, the second fixing plate of the limiting mechanism is connected to the third flange; the refueling connector is placed on the connector placement rack on the refueling trailer.

[0020] Furthermore, the first pipe segment and the second pipe segment are located in different planes.

[0021] Furthermore, the second, third, fourth, and fifth pipe segments are located in the same plane.

[0022] Furthermore, the first pipe segment, the second pipe segment, the third pipe segment, and the fourth pipe segment are all bent pipes that include bends.

[0023] Furthermore, the fifth pipe segment is an approximately straight pipe.

[0024] Furthermore, the projections of the second, third, fourth, and fifth pipe segments in the plane are U-shaped.

[0025] Furthermore, the downward-folding refueling arm fixing device also includes an auxiliary support mechanism; the auxiliary support mechanism is used to assist in supporting the main body of the refueling arm.

[0026] Furthermore, the auxiliary support mechanism includes a second connecting frame, casters, and a limiting support; the second connecting frame is connected to the main body of the refueling arm; the casters are connected to the second connecting frame to prevent the main body of the refueling arm from contacting the bottom surface when the refueling connector leaves the connector placement frame and / or the pin block and the socket are separated; the limiting support is connected to the second connecting frame to abut against the refueling trailer to prevent the main body of the refueling arm from colliding with the refueling trailer.

[0027] Compared with the prior art, the present invention has the following beneficial effects: 1) The technical solution provides a downward folding refueling arm fixing device, which, by setting a limiting mechanism, can meet the length requirements of the refueling arm and achieve stable fixing and limiting, and can realize the single-sided layout of the refueling arm.

[0028] 2) The technical solution provides a downward folding refueling arm fixing device, which, by setting a limiting mechanism and further setting an auxiliary reinforcement mechanism, can meet the length requirements of the refueling arm and achieve stable fixing and limiting.

[0029] 3) The technical solution provides a downward folding refueling arm fixing device, which, by setting a limiting mechanism, further setting an auxiliary reinforcement mechanism, and further setting an auxiliary support mechanism, can meet the length requirements of the refueling arm and achieve stable fixing and limiting, and can realize the single-sided layout of the refueling arm.

[0030] 4) The technical solution provides a downward folding refueling arm fixing device, which has a simple structure and is easy to use. The limiting mechanism can lock the device after the pin block is pushed in, while the auxiliary reinforcement mechanism can realize a single-sided cantilever structure and can be rotated at any time. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the structure of the folding refueling arm fixing device and the refueling trailer in an embodiment of the present invention. Figure 2 This is a partial structural diagram of the folding refueling arm fixing device and the refueling trailer in an embodiment of the present invention. It mainly shows the structural configuration of the main body of the refueling arm. The partial diagrams of other parts do not affect the structural configuration of the main body of the refueling arm. Figure 3 This is a front view of the folding refueling arm fixing device and the refueling trailer in an embodiment of the present invention. Figure 4 This is a side view of the folding refueling arm fixing device and the refueling trailer in an embodiment of the present invention (the opposite side where the folding refueling arm fixing device is located). Figure 5This is a top view of the folding refueling arm fixing device and the refueling trailer in an embodiment of the present invention. Figure 6 This is a bottom view of the folding refueling arm fixing device and the refueling trailer in an embodiment of the present invention. Figure 7 This is a schematic diagram of the auxiliary support mechanism in Embodiment 2 of the present invention. Figure 1 This mainly illustrates the structural setup of the auxiliary support mechanism; the partial illustrations of other parts do not affect the structural setup of the auxiliary support mechanism. Figure 8 This is a schematic diagram of the limiting mechanism in an embodiment of the present invention. It mainly illustrates the structural configuration of the limiting mechanism. The partial illustration of other parts does not affect the structural configuration of the limiting mechanism. Figure 9 for Figure 8 A magnified view of a portion of the image; Figure 10 This is a partial structural diagram of the limiting mechanism in an embodiment of the present invention (the second fixing plate and the insertion hole are not shown). Figure 11 This is a schematic diagram of the auxiliary reinforcement mechanism in an embodiment of the present invention. It mainly illustrates the structural configuration of the auxiliary reinforcement mechanism. The partial illustrations of other parts do not affect the structural configuration of the auxiliary reinforcement mechanism. Figure 12 This is a schematic diagram of the auxiliary support mechanism in Embodiment 2 of the present invention. Figure 2 This mainly illustrates the structural setup of the auxiliary support mechanism; the partial illustrations of other parts do not affect the structural setup of the auxiliary support mechanism. Figure 13 This is a structural schematic diagram of the downward-folding refueling arm fixing device and the refueling trailer in an embodiment of the present invention, viewed from below. Figure 14 This is a side view (from a bottom angle) of the folding refueling arm fixing device and the refueling trailer in an embodiment of the present invention (on the side where the folding refueling arm fixing device is installed).

[0032] in: 1. Main body of refueling arm; 1-1. First pipe section; 1-2. First flange; 1-3. Second pipe section; 1-4. Second flange; 1-5. Third pipe section; 1-6. Third flange; 1-7. Fourth pipe section; 1-8. Fourth flange; 1-9. Fifth pipe section; 1-10. Refueling connector.

[0033] 2. Fuel trailer; 2-1. Fuel tank; 2-2. Connector rack; 2-3. Fuel trailer body; 2-4. Oil outlet pipe; 2-5. Fifth flange.

[0034] 3. Limiting mechanism; 3-1. First fixing plate; 3-2. Locking seat; 3-3. Elastic element; 3-4. Pin block; 3-5. Second fixing plate; 3-6. Insertion hole.

[0035] 4. Auxiliary reinforcement mechanism; 4-1. First connecting frame; 4-1-1. Loading arm support part; 4-1-2. Cable connection part; 4-2. Connecting shaft; 4-3. Rotating component; 4-4. First ear plate; 4-5. Cable body; 4-6. Second ear plate; 4-7. Loading arm connecting ear plate.

[0036] 5. Auxiliary support mechanism; 5-1. Second connecting frame; 5-2. Casters; 5-3. Limiting support component. Detailed Implementation

[0037] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. Component models, material names, connection structures, and other features not explicitly described in this technical solution are considered common technical features disclosed in the prior art.

[0038] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0039] In the description of this invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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 the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0040] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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.

[0041] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0042] Example 1 like Figures 1-6 As shown in Figures 8-11 and 13-14, this embodiment provides a downward-folding refueling arm fixing device. The downward-folding refueling arm fixing device includes a refueling arm body 1 and a limiting mechanism 3. The limiting mechanism 3 is used to connect the refueling arm body 1 to the refueling trailer 2. The limiting mechanism 3 includes a first fixing plate 3-1, a locking seat 3-2, an elastic element 3-3, a pin block 3-4, a second fixing plate 3-5, and a socket 3-6. The first fixing plate 3-1 is connected to the refueling trailer 2. The locking seat 3-2 is connected to the first fixing plate 3-1. The two ends of the elastic element 3-3 are respectively connected to the locking seat 3-2 and the pin block 3-4. The second fixing plate 3-5 is connected to the refueling arm body 1. The socket 3-6 is located on the top. The pin block 3-4 cooperates with the socket 3-6. When the pin block 3-4 is inserted into the socket 3-6, the connection between the refueling arm body 1 and the refueling trailer 2 is realized.

[0043] The refueling trailer 2 is a pipeline refueling truck, which includes a fuel tank 2-1, a connector mounting bracket 2-2, a trailer body 2-3, and an oil outlet pipe 2-4. The fuel tank 2-1 and the connector mounting bracket 2-2 are both connected to the trailer body 2-3. The two ends of the oil outlet pipe 2-4 are connected to the fuel tank 2-1 and the refueling arm body 1, respectively. One end of the oil outlet pipe 2-4 is connected to the refueling arm body 1 via a fifth flange 2-5. The connection between the oil outlet pipe 2-4 and the refueling arm body 1 via the fifth flange 2-5 is existing technology, and this invention does not improve upon it.

[0044] The elastic element 3-3 is a spring; the pin block 3-4 is slidably connected to the locking seat 3-2; when the pin block 3-4 is inserted into the socket 3-6, the elastic element 3-3 is in a free state or a compressed state, and further compression of the elastic element 3-3 separates the pin block 3-4 and the socket 3-6. By compressing the elastic element 3-3 with external force, the position of the pin block 3-4 is aligned with the socket 3-6, and then releasing the compression of the elastic element 3-3 allows the pin block 3-4 to be inserted into the socket 3-6.

[0045] The downward-folding refueling arm fixing device also includes an auxiliary reinforcement mechanism 4; the auxiliary reinforcement mechanism 4 is used to connect the refueling arm body 1 to the refueling trailer 2; the auxiliary reinforcement mechanism 4 includes a first connecting frame 4-1, a connecting shaft 4-2, a rotating component 4-3, a cable, and an arm connecting ear plate 4-7; the first connecting frame 4-1 is connected to the refueling trailer 2; the connecting shaft 4-2 is connected to the first connecting frame 4-1; the rotating component 4-3 is rotatably connected to the connecting shaft 4-2 through a bearing; the arm connecting ear plate 4-7 is connected to the refueling arm body 1; the two ends of the cable are rotatably connected to the rotating component 4-3 and the arm connecting ear plate 4-7 respectively.

[0046] The cable includes a first ear plate 4-4, a cable body 4-5, and a second ear plate 4-6; the first ear plate 4-4 and the second ear plate 4-6 are respectively connected to both ends of the cable body 4-5; the first ear plate 4-4 is hinged to the rotating component 4-3; the second ear plate 4-6 is hinged to the loading arm connecting ear plate 4-7.

[0047] By connecting the rotating part 4-3, the connecting shaft 4-2, and the cable, a single-sided cantilever structure can be achieved, which also allows for rotation.

[0048] The first connecting frame 4-1 is provided with an arm support part 4-1-1 and a cable connection part 4-1-2; the arm support part 4-1-1 is connected to the refueling arm body 1 and is used to support the refueling arm body 1; the cable connection part 4-1-2 is connected to the connecting shaft 4-2 and is used to further connect the cable.

[0049] The main body 1 of the refueling arm includes a first pipe section 1-1, a second pipe section 1-3, a third pipe section 1-5, a fourth pipe section 1-7, and a fifth pipe section 1-9; the first pipe section 1-1, the second pipe section 1-3, the third pipe section 1-5, the fourth pipe section 1-7, and the fifth pipe section 1-9 are connected in sequence.

[0050] The loading arm connecting lug 4-7 is connected to the third pipe section 1-5 and is connected to the upper surface of the third pipe section 1-5.

[0051] The first pipe section 1-1, the second pipe section 1-3, the third pipe section 1-5, the fourth pipe section 1-7, and the fifth pipe section 1-9 are all arranged on the same side of the refueling trailer 2.

[0052] The main body 1 of the refueling arm also includes a first flange 1-2, a second flange 1-4, a third flange 1-6, a fourth flange 1-8, and a refueling connector 1-10; one end of the first pipe section 1-1 is connected to one end of the second pipe section 1-3 through the first flange 1-2; the other end of the second pipe section 1-3 is connected to one end of the third pipe section 1-5 through the second flange 1-4; the other end of the third pipe section 1-5 is connected to one end of the fourth pipe section 1-7 through the third flange 1-6; and the other end of the fourth pipe section 1-7 is connected to one end of the fifth pipe section 1-9 through the fourth flange 1-8.

[0053] The other end of the fifth pipe section 1-9 is connected to the refueling connector 1-10, which is used to connect to the well valve on the apron to introduce aviation fuel.

[0054] The loading arm support 4-1-1 has a through hole. The first pipe section 1-1 passes through the through hole but is not fixedly connected to the through hole. The diameter of the first pipe section 1-1 is smaller than that of the through hole, and the diameter of the first flange 1-2 is larger than that of the through hole. The first flange 1-2 is mounted on the loading arm support 4-1-1.

[0055] The other end of the first pipe section 1-1 is connected to the fuel tank 2-1 installed on the refueling trailer 2.

[0056] The second fixing plate 3-5 of the limiting mechanism 3 is connected to the third flange 1-6; the refueling connector 1-10 is placed on the connector placement rack 2-2 on the refueling trailer 2.

[0057] The first pipe segment 1-1 and the second pipe segment 1-3 are located in different planes.

[0058] The second pipe segment 1-3, the third pipe segment 1-5, the fourth pipe segment 1-7, and the fifth pipe segment 1-9 are located in the same plane.

[0059] The first pipe section 1-1, the second pipe section 1-3, the third pipe section 1-5, and the fourth pipe section 1-7 are all bent pipes that include bends.

[0060] The fifth pipe section 1-9 is an approximately straight pipe but may have small-angle bends.

[0061] The projections of the second pipe segment 1-3, the third pipe segment 1-5, the fourth pipe segment 1-7, and the fifth pipe segment 1-9 in the plane are U-shaped.

[0062] Example 2 like Figures 1-14 As shown, this embodiment provides a downward folding refueling arm fixing device. Based on embodiment 1, this embodiment also includes the following features: The downward folding refueling arm fixing device also includes an auxiliary support mechanism 5; the auxiliary support mechanism 5 is used to assist in supporting the main body 1 of the refueling arm.

[0063] The auxiliary support mechanism 5 includes a second connecting frame 5-1, casters 5-2, and a limiting support 5-3; the second connecting frame 5-1 is connected to the refueling arm body 1; the casters 5-2 are connected to the second connecting frame 5-1 to prevent the refueling arm body 1 from contacting the bottom surface when the refueling connector 1-10 is separated from the connector placement frame 2-2 and / or the pin block 3-4 and the insertion hole 3-6 are separated; the limiting support 5-3 is connected to the second connecting frame 5-1 to abut against the refueling trailer 2 to prevent the refueling arm body 1 from colliding with the refueling trailer 2.

[0064] The second connecting bracket 5-1 is connected to the fifth pipe section 1-9.

[0065] The above description of the embodiments is provided to enable those skilled in the art to understand and use the invention. It will be apparent to those skilled in the art that various modifications can be made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, the present invention is not limited to the above embodiments, and any improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the invention should be within the protection scope of the present invention.

Claims

1. A downward-folding type refueling arm fixing device, characterized in that, The lower folding refueling hose fixing device comprises a refueling hose body (1) and a limiting mechanism (3); The limiting mechanism (3) is used for connecting the refueling hose body (1) to the refueling trailer (2); The limiting mechanism (3) comprises a first fixed plate (3-1), a locking seat (3-2), an elastic member (3-3), a plug block (3-4), a second fixed plate (3-5) and a plug hole (3-6); The first fixed plate (3-1) is connected to the refueling trailer (2); The locking seat (3-2) is connected to the first fixed plate (3-1); The two ends of the elastic member (3-3) are respectively connected to the locking seat (3-2) and the plug block (3-4); The second fixed plate (3-5) is connected to the refueling hose body (1); The plug hole (3-6) is arranged on the second fixed plate (3-5); The plug block (3-4) is matched with the plug hole (3-6), and when the plug block (3-4) is inserted into the plug hole (3-6), the connection between the refueling hose body (1) and the refueling trailer (2) is realized.

2. A folding fueling hose hanger according to claim 1, wherein The elastic member (3-3) is a spring; The plug block (3-4) is in sliding connection with the locking seat (3-2); When the plug block (3-4) is inserted into the plug hole (3-6), the elastic member (3-3) is in a free state or a compressed state, and the elastic member (3-3) is further compressed to separate the plug block (3-4) and the plug hole (3-6).

3. The folding fueling hose hanger of claim 1, wherein: The lower folding refueling hose fixing device further comprises an auxiliary reinforcing mechanism (4); The auxiliary reinforcing mechanism (4) is used for connecting the refueling hose body (1) to the refueling trailer (2); The auxiliary reinforcing mechanism (4) comprises a first connecting frame (4-1), a connecting shaft (4-2), a rotating member (4-3), a cable and a hose connecting ear plate (4-7); The first connecting frame (4-1) is connected to the refueling trailer (2); The connecting shaft (4-2) is connected to the first connecting frame (4-1); The rotating member (4-3) is connected to the connecting shaft (4-2); The hose connecting ear plate (4-7) is connected to the refueling hose body (1); The two ends of the cable are respectively rotatably connected to the rotating member (4-3) and the hose connecting ear plate (4-7).

4. A folding refueling spout holder according to claim 3, wherein The cable comprises a first ear plate (4-4), a cable body (4-5) and a second ear plate (4-6); The first ear plate (4-4) and the second ear plate (4-6) are respectively connected to the two ends of the cable body (4-5); The first ear plate (4-4) is hinged to the rotating member (4-3); The second ear plate (4-6) is hinged to the hose connecting ear plate (4-7).

5. A folding fueling hose hanger assembly according to claim 3 wherein: The first connecting frame (4-1) is provided with a hose supporting part (4-1-1) and a cable connecting part (4-1-2); The hose supporting part (4-1-1) is connected to the refueling hose body (1) and is used for supporting the refueling hose body (1); The cable connecting part (4-1-2) is connected to the connecting shaft (4-2) and is used for further connecting the cable; The rotating member (4-3) is rotatably connected to the connecting shaft (4-2) through a bearing.

6. A folding fueling hose hanger assembly as defined in claim 1 wherein, The refueling crane main body (1) comprises a first pipe section (1-1), a second pipe section (1-3), a third pipe section (1-5), a fourth pipe section (1-7), and a fifth pipe section (1-9); The first pipe section (1-1), the second pipe section (1-3), the third pipe section (1-5), the fourth pipe section (1-7), and the fifth pipe section (1-9) are sequentially connected; The first pipe section (1-1), the second pipe section (1-3), the third pipe section (1-5), the fourth pipe section (1-7), and the fifth pipe section (1-9) are arranged on the same side of the refueling trailer (2).

7. A folding refueling spout holder according to claim 6, wherein The refueling crane main body (1) further comprises a first flange (1-2), a second flange (1-4), a third flange (1-6), a fourth flange (1-8), and a refueling connector (1-10); One end of the first pipe section (1-1) is connected to one end of the second pipe section (1-3) through the first flange (1-2); The other end of the second pipe section (1-3) is connected to one end of the third pipe section (1-5) through the second flange (1-4); The other end of the third pipe section (1-5) is connected to one end of the fourth pipe section (1-7) through the third flange (1-6); The other end of the fourth pipe section (1-7) is connected to one end of the fifth pipe section (1-9) through the fourth flange (1-8); The other end of the fifth pipe section (1-9) is connected to the refueling connector (1-10), which is used to be connected to a ground well valve on the apron to introduce aviation oil; The other end of the first pipe section (1-1) is connected to an oil tank (2-1) arranged on the refueling trailer (2).

8. A folding refueling spout holder according to claim 7, wherein The second fixing plate (3-5) of the limiting mechanism (3) is connected to the third flange (1-6); The refueling connector (1-10) is placed on a connector placing rack (2-2) on the refueling trailer (2).

9. A folding fueling hose hanger assembly according to claim 7, wherein: The first pipe section (1-1) and the second pipe section (1-3) are in different planes; The second pipe section (1-3), the third pipe section (1-5), the fourth pipe section (1-7), and the fifth pipe section (1-9) are in the same plane; The first pipe section (1-1), the second pipe section (1-3), the third pipe section (1-5), and the fourth pipe section (1-7) are all elbow pipes comprising a bending part; The second pipe section (1-3), the third pipe section (1-5), the fourth pipe section (1-7), and the fifth pipe section (1-9) have a U-shaped projection in the plane.

10. The fold-down refueling spout holder of claim 1, wherein: The lower folding refueling crane fixing device further comprises an auxiliary supporting mechanism (5); The auxiliary supporting mechanism (5) is used to assist in supporting the refueling crane main body (1); The auxiliary supporting mechanism (5) comprises a second connecting rack (5-1), a castor (5-2), and a limiting support (5-3); The second connecting rack (5-1) is connected to the refueling crane main body (1); The castor (5-2) is connected to the second connecting rack (5-1); The limiting support (5-3) is connected to the second connecting rack (5-1) and is used to abut against the refueling trailer (2) to avoid collision between the refueling crane main body (1) and the refueling trailer (2).

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