Novel refueling machine oil gun for refueling and unloading of airplane

Abstract

The novel oiling machine oil gun comprises an oil gun shell, the oil gun shell comprises a connecting part and a handheld part from top to bottom, an oil conveying inner pipe corresponding to an oil inlet of an airplane is arranged on the inner side of the connecting part, and an oil conveying outer pipe corresponding to an oil outlet of the airplane is arranged on the outer side of the connecting part. A clamping head which is clamped and fixed with a clamping groove in the outer side of an airplane oil inlet is arranged on the connecting part in a sliding manner, and a thrust assembly is arranged on the connecting part and is used for clamping the clamping head; and a pressing valve for controlling fuel delivery is arranged on the handheld part. The aircraft fuel oil filling device has the beneficial effects that through cooperation of the clamping head and the thrust assembly, the clamping head can be rapidly and stably fixed in the clamping groove in the outer side of the aircraft fuel oil inlet, the loosening risk in the fuel oil filling process is reduced through reliable fixation of the clamping head, and therefore fuel oil leakage is avoided, and the overall safety in the fuel oil filling process is greatly improved; and potential safety hazards are reduced.

Description

Technical Field

[0001] The utility model relates to the field of oil guns, in particular to a new type of oil gun for oiling and unloading aircraft. Background Art

[0002] In 1903, the Wright brothers made their first successful flight, marking the beginning of the modern era of aviation. Subsequently, aircraft technology advanced rapidly, evolving from early wooden frames to modern composite materials and jet engines. World War II drove breakthroughs in military aviation, while the development of civil aviation ushered in a boom in commercial aviation in the second half of the 20th century. Today, aircraft technology continues to evolve in a more efficient and environmentally friendly direction. The refueling port of an aircraft is usually located on the upper part of the wing or fuselage, depending on the design of the aircraft. When refueling, the aircraft needs to stop in a dedicated refueling area, which is usually equipped with a refueling system and refueling equipment to ensure safety and efficiency. Each aircraft has a specific refueling port location designed to optimize the refueling process and maintain the balance of the aircraft.

[0003] During refueling, the aircraft's fuel gun is usually located vertically under the wing to deliver fuel, but the existing fuel gun has a poor clamping effect and is prone to loosening, resulting in fuel leakage during the refueling process. Summary of the invention

[0004] The purpose of the utility model is to provide a new type of oil gun for refueling and unloading aircraft in order to solve the above-mentioned problems, as described below.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] The utility model provides a novel oil gun for a fuel dispenser used for refueling and unloading oil in an aircraft, comprising an oil gun housing, wherein the oil gun housing comprises a connecting portion and a hand-held portion from top to bottom, wherein an inner oil delivery tube corresponding to an oil inlet of the aircraft is arranged on the inner side of the connecting portion, a clamping head which is fixedly connected to a clamping groove on the outer side of the oil inlet of the aircraft is slidably arranged on the connecting portion, and a thrust assembly for driving the clamping head to slide is arranged on the connecting portion to clamp the clamping head; and a pressing valve for controlling fuel delivery is arranged on the hand-held portion.

[0007] In some embodiments, a sealing ring corresponding to the aircraft fuel inlet is provided on the outer side of the inner oil delivery pipe.

[0008] In some embodiments, a rubber ring is provided at the connection between the connecting portion and the inner oil delivery tube.

[0009] In some embodiments, a thrust assembly is slidably connected to the outside of the connecting portion. The thrust assembly includes a sliding ring. An annular groove that contacts the bottom surface of the clamping head is provided inside the sliding ring. The bottom surface of the annular groove is inclined, with its high end away from the axis of the connecting portion. A support ring is provided on the outside of the connecting portion, and a thrust spring that pushes the sliding ring to slide upward is provided on the support ring.

[0010] In some embodiments, a middle housing is provided between the connecting portion and the handheld portion. The outer diameter of the middle housing is smaller than that of the connecting portion. A threaded sleeve is threadedly connected to the outside of the middle housing, and a convex ring that supports the sliding ring is provided on the upper surface of the threaded sleeve.

[0011] In some embodiments, there are multiple clamping heads, which are circumferentially distributed based on the axis of the connecting portion.

[0012] In some embodiments, an opening groove is provided at the inner end of the clamping head. A stop strip that slides with the opening groove is provided inside the connecting portion, and an elastic member that pushes the clamping head to slide toward the inside of the annular groove is provided on the stop strip.

[0013] In some embodiments, the thickness of the clamping head gradually thins as it extends into the inner end of the connecting portion.

[0014] The beneficial effects are as follows:

[0015] Through the cooperation of the clamping head and the thrust assembly, the clamping head can be quickly and firmly fixed in the outer clamping groove of the aircraft fuel inlet. The reliable fixation of the clamping head reduces the risk of loosening during the refueling process, thus avoiding fuel leakage, greatly improving the overall safety of the refueling process, and reducing potential safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 is a schematic diagram of the internal structure of the present invention;

[0018] Figure 2 is a top view of the present invention;

[0019] Figure 3 is an enlarged schematic diagram of the structure of the clamping head in the present invention.

[0020] The reference numerals are explained as follows:

[0021] 1. Oil gun housing; 101. Connecting part; 101a. Stop bar; 101b. Support ring; 102. Middle housing; 103. Handheld part; 2. Thrust assembly; 201. Sliding ring; 202. Annular groove; 203. Accommodating groove; 204. Thrust spring; 205. Threaded sleeve; 3. Clamping head; 301. Open slot; 302. Elastic member; 4. Pressing valve; 5. Inner oil delivery pipe. Detailed implementation manners

[0022] To make the objectives, technical solutions and advantages of the present utility model clearer, the technical solutions of the present utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other implementation manners obtained by those of ordinary skill in the art without creative efforts fall within the scope protected by the present utility model.

[0023] First embodiment:

[0024] See Figures 1-3 As shown, the present utility model provides a new type of fuel gun for aircraft refueling and oil unloading, including an oil gun housing 1. The oil gun housing 1 includes a connecting part 101 and a handheld part 103 from top to bottom. An inner oil delivery pipe 5 corresponding to the aircraft fuel inlet is provided inside the connecting part 101. A clamping head 3 slidably provided on the connecting part 101 is fixedly clamped to the outer card slot of the aircraft fuel inlet. A thrust assembly 2 for driving the sliding of the clamping head 3 is provided on the connecting part 101 to clamp the clamping head 3; a pressing valve 4 for controlling fuel delivery is provided on the handheld part 103;

[0025] During use, first align the inner oil delivery pipe 5 of the connecting part 101 with the aircraft fuel inlet to ensure its docking with the fuel inlet. The clamping head 3 assembled on the connecting part 101 can be slidably operated through the thrust assembly 2 to ensure that the clamping head 3 can be firmly clamped in the outer card slot of the aircraft fuel inlet, thereby fixing the inner oil delivery pipe 5. When clamping, the force applied by the thrust assembly 2 makes the clamping head 3 firmly fixed at the fuel inlet to prevent leakage or loosening. During specific operation, through the handheld part 103, the operator can control the pressing valve 4 to open or close the fuel flow;

[0026] This device firmly clamps the clamping head 3 in the outer card slot of the aircraft fuel inlet through a reliable fixing mechanism, can quickly complete clamping and locking, reduces the risk of fuel leakage, and improves the safety of the refueling process. This device not only improves work efficiency but also increases the safety of aircraft refueling.

[0027] Furthermore, a sealing ring corresponding to the aircraft fuel inlet is provided on the outer side of the inner fuel pipe 5, and a rubber ring is provided at the connection between the connecting portion 101 and the inner fuel pipe 5. The rubber ring is located on the inner bottom surface of the connection between the connecting portion 101 and the inner fuel pipe 5 and can correspond to the corresponding aircraft fuel inlet clamping pipeline. The sealing performance and safety of the refueling process are improved through the sealing ring and the rubber ring. The sealing ring ensures the tight fit between the inner fuel pipe and the aircraft fuel inlet, effectively preventing fuel leakage and avoiding potential fire risks. In addition, the rubber ring provides additional sealing protection at the interface between the connecting portion 101 and the inner fuel pipe 5, reducing leakage that may be caused by vibration or pressure changes, improving the safety of the refueling process, and effectively protecting the equipment and the aircraft from damage caused by fuel leakage.

[0028] Second embodiment, the features different from the first embodiment are as follows:

[0029] A thrust assembly 2 is slidably connected to the outer side of the connecting portion 101. The thrust assembly 2 includes a sliding ring 201. An annular groove 202 in contact with the bottom surface of the clamping head 3 is provided on the inner side of the sliding ring 201. The bottom surface of the annular groove 202 is inclined, and its high end is away from the axis of the connecting portion 101. A support ring 101b is provided on the outer side of the connecting portion 101, and a thrust spring 204 for pushing the sliding ring 201 to slide upward is provided on the support ring 101b. A receiving groove 203 corresponding to the thrust spring 204 is provided on the inner side of the sliding ring 201;

[0030] First, align the inner fuel pipe 5 of the connecting portion 101 with the aircraft fuel inlet, and stably position the device near the fuel inlet through the handheld portion 103. When operating the thrust assembly 2, the thrust spring 204 will push the thrust assembly 2 to slide upward. The inclined bottom surface of the annular groove 202 contacts the bottom surface of the clamping head 3, enabling the clamping head 3 to smoothly snap into the card slot when docking with the fuel inlet. Through this design, the clamping head 3 will be firmly fixed on the fuel inlet to prevent leakage, making the clamping process of the entire refueling device simple and efficient.

[0031] In addition, a middle housing 102 is provided between the connecting portion 101 and the handheld portion 103. The outer diameter of the middle housing 102 is smaller than the outer diameter of the connecting portion 101. A threaded sleeve 205 is threadedly connected to the outer side of the middle housing 102. A convex ring for supporting the sliding ring 201 is provided on the upper surface of the threaded sleeve 205. The combination of the threaded sleeve 205 and the middle housing 102 can provide stable support for the sliding ring 201 through the convex ring, keeping the entire device stable during operation, reducing detachment during the fuel delivery process caused by vibration or improper operation, ensuring the stability of the sliding ring 201, and making the refueling process smoother and more reliable.

[0032] Third embodiment, the features different from the second embodiment are as follows:

[0033] There are multiple clamping heads 3, which are circumferentially distributed based on the axis of the connecting portion 101. The position of the entire circumference of the aircraft fuel inlet can be limited by the multiple clamping heads 3, and the aircraft fuel inlet can be comprehensively and evenly limited.

[0034] In a preferred embodiment, an opening groove 301 is provided at the inner end of the clamping head 3, and a retaining strip 101a that slides with the opening groove 301 is provided on the inner side of the connecting portion 101. An elastic member 302 for pushing the clamping head 3 to slide towards the inside of the annular groove 202 is provided on the retaining strip 101a. Using the elasticity of the elastic member 302, when the bottom surface of the annular groove 202 moves away from the clamping head 3, the elastic member 302 can make the clamping head 3 slide towards the inside of the annular groove 202, thereby releasing the limit on the aircraft fuel inlet. By cooperating the opening groove 301 with the retaining strip 101a, the installation of the elastic member 302 can be limited. Using the elasticity of the elastic member 302, the clamping head 3 can slide flexibly inside the annular groove 202 under the push of the elastic member 302. In this way, when the bottom surface of the annular groove 202 moves away, the elasticity of the elastic member 302 can push the clamping head 301 away from the outer clamping groove of the fuel inlet on the aircraft, thereby releasing the limit on the fuel inlet and achieving precise fixing and release, greatly improving the safety and efficiency of the refueling operation.

[0035] Furthermore, the thickness of the clamping head 3 gradually thins towards the inner end of the connecting portion 101 to facilitate the insertion of the clamping head 3 into the clamping groove of the aircraft fuel inlet. The gradually thinning design of the clamping head 3 enables it to be smoothly inserted into the clamping groove of the aircraft fuel inlet, ensuring a stable combination of the clamping head 3 and the fuel inlet.

[0036] As described above, only the specific embodiments of the present invention are provided, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A new type of fuel nozzle for aircraft refueling and defueling, comprising a nozzle housing (1), characterized in that: The nozzle housing (1) includes a connection part (101) and a handheld part (103) from top to bottom. An inner oil delivery pipe (5) corresponding to the aircraft fuel inlet is arranged inside the connection part (101). A clamping head (3) that is slidably arranged on the connection part (101) and is clamped and fixed with the outer card slot of the aircraft fuel inlet. A thrust assembly (2) for driving the sliding of the clamping head (3) is arranged on the connection part (101) to clamp the clamping head (3); A pressing valve (4) for controlling fuel delivery is arranged on the handheld part (103).

2. The new fuel nozzle for aircraft refueling and defueling according to claim 1, characterized in that: A sealing ring corresponding to the aircraft fuel inlet is arranged outside the inner oil delivery pipe (5).

3. The new refueling nozzle for aircraft refueling and defueling according to claim 2, characterized in that: A rubber ring is arranged at the connection between the connection part (101) and the inner oil delivery pipe (5).

4. The novel fuel nozzle for aircraft refueling and defueling according to claim 1, wherein: The thrust assembly (2) is slidably connected to the outside of the connection part (101). The thrust assembly (2) includes a sliding ring (201). An annular groove (202) in contact with the bottom surface of the clamping head (3) is arranged inside the sliding ring (201). The bottom surface of the annular groove (202) is inclined, and its high end is away from the axis of the connection part (101). A support ring (101b) is arranged outside the connection part (101), and a thrust spring (204) for pushing the sliding ring (201) to slide upward is arranged on the support ring (101b).

5. The new fuel nozzle for aircraft refueling and defueling according to claim 4, characterized in that: A middle housing (102) is arranged between the connection part (101) and the handheld part (103). The outer diameter of the middle housing (102) is smaller than the outer diameter of the connection part (101). A threaded sleeve (205) is threadedly connected to the outside of the middle housing (102), and a convex ring for supporting the sliding ring (201) is arranged on the upper surface of the threaded sleeve (205).

6. A new type of refueling nozzle for aircraft refueling and defueling according to claim 4, characterized in that: The number of the clamping heads (3) is multiple, and they are circumferentially distributed with the axis of the connection part (101) as the reference.

7. A new type of fuel nozzle for aircraft refueling and defueling according to claim 6, characterized in that: An opening groove (301) is arranged at the inner end of the clamping head (3). A stop bar (101a) that slides with the opening groove (301) is arranged inside the connection part (101). An elastic member (302) for pushing the clamping head (3) to slide towards the inside of the annular groove (202) is arranged on the stop bar (101a).

8. The new refueling nozzle for aircraft refueling and defueling according to claim 6, characterized in that: The thickness of the inner end of the clamping head (3) gradually becomes thinner when it extends into the connection part (101).

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