Air refueling hose taper pipe connecting structure

Abstract

The utility model provides a taper pipe connecting structure for an aerial refueling hose. The structure comprises a refueling hose connector (1), a connecting screw (2), a clamping sleeve (3), a half clamping ring (4) with internal threads and a refueling taper pipe connector (5), the refueling hose connector (1) and the refueling taper pipe connector (5) are matched through shaft holes, and in the connecting state, the refueling hose connector (1) is inserted into the refueling taper pipe connector (5); the two half clamping rings (4) with the internal threads are combined for use, so that the axial limiting of the refueling hose joint (1) and the refueling taper pipe joint (5) is realized; the clamping sleeve (3) is sleeved outside the two half clamping rings (4) with the internal threads to achieve radial limiting, and the clamping sleeve (3) and the half clamping rings (4) are prevented from being separated through the connecting screw (2), so that safety of aerial refueling is guaranteed, and the refueling taper pipe is prevented from accidentally falling off from the refueling hose and colliding with an oil receiver.

Description

Technical Field

[0001] The utility model belongs to aviation application technology and relates to a cone pipe connection structure for an aerial refueling hose. Background Art

[0002] Plug-and-drogue aerial refueling, commonly known as soft aerial refueling, is a widely used aerial refueling method both domestically and internationally. During operation, the refueling aircraft deploys a roughly 20-meter-long hose drogue under the influence of airflow. A refueling plug is positioned on the head of the receiving aircraft. The receiving aircraft autonomously controls the refueling plug to connect with the refueling aircraft's hose drogue, opening the fuel transfer channel and enabling fuel transfer between the two aircraft. To ensure aerial refueling safety and prevent the drogue from accidentally falling off the hose and striking the receiving aircraft, the connection method for the hose drogue is crucial: it must be reliable, employ a certain degree of redundancy, and be simple and easy to maintain. Utility Model Content

[0003] The technical problems of the utility model are:

[0004] The traditional connection structure for aerial refueling hose and cone cannot achieve a reliable connection between the refueling hose connector and the refueling cone connector, causing the refueling cone to accidentally fall off the refueling hose and collide with the receiving aircraft.

[0005] The purposes of this utility model are:

[0006] A connecting structure for aerial refueling hose and cone is proposed to achieve reliable connection between the refueling hose joint and the refueling cone joint.

[0007] The technical solution of the utility model is:

[0008] The utility model proposes a connecting structure for an aerial refueling hose cone pipe, which is used to connect the refueling cone pipe and the refueling hose, comprising: a refueling hose connector 1, a connecting screw 2, a ferrule 3, a half-circlip 4 with an internal thread and a refueling cone pipe connector 5, wherein: the refueling hose connector 1 and the refueling cone pipe connector 5 are matched with each other by an axial hole, and when in a connected state, the refueling hose connector 1 is inserted into the refueling cone pipe connector 5; the two half-circlips 4 with the internal thread are used in combination to realize axial limitation of the refueling hose connector 1 and the refueling cone pipe connector 5; the ferrule 3 is sleeved on the outside of the two half-circlips 4 with the internal thread to realize radial limitation, and a connecting screw 2 is used to prevent the two from separating.

[0009] Preferably, the half-circuit 4 with internal thread is combined into a complete half-circuit 4 by two pieces, and the refueling hose connector 1 and the refueling cone connector 5 inserted into each other are clamped in the clamping mouth of the half-circuit 4 with internal thread by using the axial shoulder limiting method to achieve axial limitation.

[0010] Preferably, screw holes corresponding to the threaded holes of the internally threaded half-circuit 4 are opened on the surface of the ferrule 3, and the ferrule 3 is fixed to the internally threaded half-circuit 4 by multiple connecting screws 2, realizing a redundancy design in the structure to ensure connection reliability.

[0011] Preferably, the shape of the ferrule 3 is a full circle.

[0012] Preferably, a screw hole corresponding to the threaded hole of the half clamping ring 4 with internal thread is opened on the surface of the clamping sleeve 3.

[0013] Preferably, when in the connected state, the ferrule 3 is placed outside the two half-circlips 4 with internal threads to achieve radial limitation, and the ferrule 3 is fixed to the half-circlips 4 with internal threads by multiple connecting screws 2 to prevent them from falling out during operation.

[0014] Preferably, there are 6 connecting screws 2.

[0015] The advantages and beneficial effects of the utility model are:

[0016] 1. The utility model adopts the bayonet structure and conventional threaded fasteners for limiting the position, with a small number of parts and simple connection. It can be disassembled with common tools such as open-end wrenches, which is convenient for daily maintenance.

[0017] 2. The ferrule and the half-circlip with internal thread of the utility model are fixed by multiple connecting screws. The two half-circlips with internal thread each have one screw to achieve structural connection. The structure has a redundant design and high reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments of the present invention. It is obvious that the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 This is a schematic diagram of a cone-tube connection structure for an aerial refueling hose according to an embodiment of the present utility model;

[0020] Among them, 1-refueling hose connector, 2-connecting screw, 3-ferrule, 4-semi-circuit ring with internal thread, 5-refueling cone pipe connector. DETAILED DESCRIPTION

[0021] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0022] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other, and the embodiments can refer to and quote each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0023] See Figure 1 The utility model is a connecting structure for an aerial refueling hose cone pipe, which mainly consists of a refueling hose connector 1, a connecting screw 2, a ferrule 3, a half clamping ring with an internal thread 4 and a refueling cone pipe connector 5.

[0024] In terms of the connection relationship between the various components, the refueling hose connector 1 and the refueling cone tube connector 5 are matched with an axial hole, and the refueling hose connector 1 is inserted into the refueling cone tube connector 5 when connected; the semi-circular clasp 4 with an internal thread is combined into a complete semi-circular clasp by two pieces when used, and the refueling hose connector 1 and the refueling cone tube connector 5 inserted into each other are clamped in the bayonet of the semi-circular clasp 4 with an internal thread by an axial shoulder limiting method; the ferrule 3 is a full circle, and the surface is provided with screw holes corresponding to the threaded holes of the semi-circular clasp 4 with an internal thread. When connected, the ferrule 3 is sleeved on the outside of the two semi-circular clasps 4 with an internal thread to achieve radial limitation, and the ferrule 3 and the semi-circular clasp 4 with an internal thread are fixed by multiple (typically 6) connecting screws 2.

[0025] When the utility model is working, axial limitation is performed by the bayonet mouth of the two half-circlips 4 with internal threads and the axial shoulders of the matched refueling hose connector 1 and the refueling cone connector 5, thereby transmitting the tensile load of the airflow acting on the refueling cone; the full-circular ferrule 3 is sleeved on the outside of the two half-circlips 4 with internal threads for radial limitation, and is supplemented by multiple connecting screws 2 with structural redundancy to fix the ferrule 3 and the half-circlips 4 with internal threads, thereby preventing them from falling out during work and transmitting radial loads.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the field can easily think of various equivalent modifications or replacements within the technical scope disclosed in the present invention, and these modifications or replacements should all be included in the protection scope of the present invention.

Claims

1. An aerial refueling hose cone connection structure, characterized in that: include: A refueling hose connector (1), a connecting screw (2), a ferrule (3), a half-circlip with an internal thread (4), and a refueling cone pipe connector (5), wherein: the refueling hose connector (1) and the refueling cone pipe connector (5) are matched with each other in an axial hole, and in a connected state, the refueling hose connector (1) is inserted into the refueling cone pipe connector (5); the two half-circlips with an internal thread (4) are used in combination to realize axial limitation of the refueling hose connector (1) and the refueling cone pipe connector (5); the ferrule (3) is sleeved on the outside of the two half-circlips with an internal thread (4) to realize radial limitation, and a connecting screw (2) is used to prevent the two from separating.

2. The aerial refueling hose cone connection structure according to claim 1, characterized in that: in: The half clamping ring (4) with internal threads is assembled into a complete half clamping ring by combining two pieces, and the refueling hose connector (1) and the refueling cone connector (5) inserted into each other are clamped in the clamping mouth of the half clamping ring (4) with internal threads by adopting an axial shoulder limiting method to achieve axial limiting.

3. The aerial refueling hose cone connection structure according to claim 1, characterized in that: in: The surface of the ferrule (3) is provided with screw holes corresponding to the threaded holes of the half ferrule (4) with internal threads. The ferrule (3) and the half ferrule (4) with internal threads are fixed by a plurality of connecting screws (2), thereby achieving a redundant design in the structure and ensuring connection reliability.

4. The aerial refueling hose cone connection structure according to claim 1, characterized in that: in: The shape of the ferrule (3) is a full circle.

5. The aerial refueling hose cone connection structure according to claim 1, characterized in that: in: The surface of the clamping sleeve (3) is provided with screw holes corresponding to the threaded holes of the half clamping ring (4) with internal threads.

6. The aerial refueling hose cone connection structure according to claim 1, characterized in that: in: When in the connected state, the ferrule (3) is sleeved outside the two half-circlips (4) with internal threads to achieve radial limitation, and the ferrule (3) and the half-circlips (4) with internal threads are fixed by multiple connecting screws (2) to prevent them from falling out during operation.

7. The aerial refueling hose cone connection structure according to any one of claims 1 to 6, characterized in that: in: There are 6 connecting screws (2).

8. The aerial refueling hose cone connection structure according to any one of claims 1 to 6, characterized in that: in: This structure is used to connect the refueling cone and the refueling hose.

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