Umbrella cone tail cover of oiling machine

Abstract

The utility model belongs to the technical field of structural design of aircraft components, and particularly relates to an umbrella cone tail cover of an oiling machine. The tail cover comprises an inner skin wall plate assembly, the middle of the inner skin wall plate assembly is enclosed by an inner butt joint angle material to form a through hole, the outer portion of the inner butt joint angle material is connected with an inner skin, and the inner skin wall plate assembly is connected to a belly opening of the oiling machine through the inner butt joint angle material in the middle; the outer skin wall plate assembly comprises a transverse partition frame and an outer skin wall plate supported by the transverse partition frame, openings are formed in the top side and the front side of the outer skin wall plate, other side faces of the outer skin wall plate are connected through arc-shaped wall plates, and the outer skin wall plate is connected with the inner butt joint angle section of the inner skin wall plate assembly through an outer butt joint angle section on the top side; the channel assembly sequentially penetrates through the outer skin wall plate assembly, the inner skin wall plate assembly and the abdomen opening of the oiling machine and then extends into the oiling machine, and the channel assembly comprises a conical barrel used for containing an umbrella cone. The device can be conveniently and quickly butted with an aircraft refueling platform and is easy to maintain.

Description

Technical Field

[0001] The present application belongs to the technical field of aircraft component structure design, and in particular relates to a tanker parachute tail cover. Background Art

[0002] Aerial refueling can extend aircraft endurance, provide emergency refueling support, and enable long-range delivery. During aerial refueling, ensuring a stable connection between the fuel hose and the aircraft is crucial. In existing technologies, the refueling aircraft uses a winch controller to release or retract the refueling hose, driving the parachute cone at the end of the refueling hose to connect with the refueling connector of the receiving aircraft.

[0003] Separately designed tankers or receiving aircraft meet the requirements of structural stability and aerodynamics. However, considering the economy, existing large passenger aircraft or transport aircraft are usually modified and used as tankers when necessary, rather than directly designing a tanker. When designing the aircraft structure, a refueling platform for aerial refueling is usually reserved. The refueling platform only has a parachute inlet and outlet channel. When improving the tanker, there is an urgent need for a tanker parachute tail cover that can be installed at the outlet of the channel to ensure the aerodynamic requirements of the aircraft belly during the use of the parachute. At the same time, the tail cover also needs to ensure that it can be quickly installed or maintained. Utility Model Content

[0004] In order to solve the above problems, the first aspect of the present application provides a tanker umbrella cone tail cover to meet the needs of use, maintenance, load-bearing, refueling functions, etc.

[0005] The tanker umbrella cone tail cover provided in this application mainly includes:

[0006] An inner skin panel assembly, wherein the middle portion is enclosed by an inner butt-jointed angle bar to form a through hole, the inner skin being connected to the outside of the inner butt-jointed angle bar, and the inner skin panel assembly being connected to the belly opening of the tanker via the inner butt-jointed angle bar;

[0007] An outer skin panel assembly includes a transverse bulkhead and an outer skin panel supported by the transverse bulkhead, wherein the outer skin panel has openings on its top and front sides, and its other sides are connected by curved panels, and the outer skin panel is connected to the inner skin panel assembly by an outer butt angle bar on its top side;

[0008] The channel assembly passes through the outer skin panel assembly, the inner skin panel assembly and the belly opening of the refueling machine in sequence, and extends into the refueling machine. The channel assembly includes a conical cylinder for accommodating the umbrella cone.

[0009] Preferably, a plurality of cable fixing angle pieces are provided on the inner skin of the inner skin wall panel assembly, a through hole is provided on the wall of the conical cylinder of the channel assembly, a lighting lamp holder is installed in the through hole, the lighting lamp is installed on the lighting lamp holder inside the conical cylinder, and the cable from the refueling machine is fixed by the cable fixing angle piece and electrically connected to the lighting lamp holder.

[0010] Preferably, the channel assembly also includes a front end channel, which has a base and a cylinder protruding upward relative to the base, and the cylinder is docked with one end of the conical cylinder through a docking strip, and when the conical cylinder is extended into the refueling machine, the base of the front end channel can be attached and connected to the cross-frame of the outer skin wall panel assembly from the outside.

[0011] Preferably, the curved wall panels of the outer skin panel include a middle outer skin, a side outer skin and a rear outer skin, wherein the front end of the middle outer skin is connected to the opening on the front side of the outer skin panel, the rear end is connected to the rear outer skin, and the two sides are connected to the side outer skins, the front end of the side outer skin is connected to the opening on the front side of the outer skin panel, and the outer side is connected to the external docking angle material on the top of the outer skin panel, and each outer skin is connected by a long beam.

[0012] Preferably, the transverse bulkhead frame includes multiple sections, the front end frame is close to the front opening of the outer skin panel, the end frame is close to the rear side of the outer skin panel, the front end frame is an annular structure, and the other transverse bulkhead frames are semi-annular structures.

[0013] Preferably, the outer skins of the outer skin panel assembly, the transverse bulkheads and the long stringers are connected by connecting angle pieces, and the connecting angle pieces include T-shaped angle pieces or L-shaped angle pieces.

[0014] This application can achieve rapid docking with an aircraft refueling platform and is easy to maintain, meeting the installation and use requirements of the parachute cone assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of a preferred embodiment of the tanker umbrella cone tail cover of the present application.

[0016] Figure 2 This application Figure 1 Schematic diagram of the tail cover explosion of the embodiment shown.

[0017] Figure 3 This application Figure 1 Schematic diagram of the structure of the inner skin panel assembly of the embodiment shown.

[0018] Figure 4 This application Figure 1 Schematic diagram of the structure of the outer skin panel assembly of the embodiment shown.

[0019] Figure 5 This application Figure 1 Schematic diagram of the channel assembly structure of the illustrated embodiment.

[0020] Figure 6 This application Figure 1 Schematic diagram of the exploded cross-frame of the illustrated embodiment.

[0021] Among them, 1-channel assembly, 2-outer skin panel assembly, 3-inner skin panel assembly, 4-cross bulkhead, 5-outer skin panel, 6-conical cylinder, 7-front end channel, 8-lighting lamp holder, 9-docking strip, 10-outer docking angle, 11-long stringer, 12-middle outer skin, 13-side outer skin, 14-rear outer skin, 15-inner skin, 16-side docking angle, 17-rear docking angle, 18-cable fixing angle piece, 19-docking piece, 20-front end frame, 21-No. 1 bulkhead, 22-No. 2 bulkhead, 23-end frame. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the implementation of this application clearer, the technical solutions in the implementation of this application will be described in more detail below in conjunction with the drawings in the implementation of this application. In the drawings, the same or similar numbers throughout represent the same or similar elements or elements with the same or similar functions. The described implementation is a part of the implementation of this application, not all of the implementations. The implementation described below with reference to the drawings is exemplary and is intended to be used to explain this application, and should not be understood as a limitation on this application. Based on the implementation in this application, all other implementations obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. The implementation of this application is described in detail below in conjunction with the drawings.

[0023] The present application provides a tanker umbrella cone tail cover, which is installed at the belly opening of the tanker, such as Figure 1 and Figure 2 As shown, the tail cover includes:

[0024] The inner skin panel assembly 3 has a through hole formed in the middle by an inner butt-jointed angle bar, and the inner skin 15 is connected to the outside of the inner butt-jointed angle bar. The inner skin panel assembly 3 is connected to the belly opening of the fuel dispenser through the inner butt-jointed angle bar in the middle;

[0025] The outer skin panel assembly 2 includes a transverse bulkhead 4 and an outer skin panel 5 supported by the transverse bulkhead 4. The outer skin panel 5 has openings on its top and front sides, and its other sides are connected by curved panels. The outer skin panel 5 is connected to the inner skin panel assembly 3 by an outer butt angle 10 on its top side.

[0026] The channel assembly 1 passes through the outer skin panel assembly 2, the inner skin panel assembly 3 and the belly opening of the refueling machine in sequence, and extends into the refueling machine. The channel assembly 1 includes a conical cylinder 6 for accommodating the umbrella cone.

[0027] In this embodiment, the through hole of the inner skin panel assembly 3 is connected to the belly opening of the fuel dispenser, and then the outer skin panel assembly 2 is installed on the outside, and the top side opening of the outer skin panel assembly 2 is connected to the through hole of the inner skin panel assembly 3. The channel assembly 1 is inserted from the front side opening of the outer skin panel assembly 2, and passes through the top side opening of the outer skin panel assembly 2, the through hole of the inner skin panel assembly 3 and the belly opening of the fuel dispenser in sequence to enter the interior of the fuel dispenser.

[0028] In some optional embodiments, such as Figure 3 As shown, a plurality of cable fixing angle pieces 18 are provided on the inner skin 15 of the inner skin panel assembly 3. Figure 5 As shown, a through hole is provided on the wall of the conical cylinder 6 of the channel assembly 1, and a lighting lamp holder 8 is installed in the through hole. The lighting lamp is installed on the lighting lamp holder 8 inside the conical cylinder 6, and the cable from the fuel dispenser is fixed by the cable fixing angle piece 18 and electrically connected to the lighting lamp holder 8.

[0029] In this embodiment, the conical body 6 has a through-hole for the lighting, with a reinforced flange around the edge. Two lighting holders 8 are mounted on the through-holes of the conical body 6. The conical body 6 is stepped and tapered, with a trumpet-shaped end suitable for accommodating the umbrella cone. The lighting allows for easy inspection of the umbrella cone within the conical body 6, meeting maintenance requirements for the umbrella cone and tail cover. The lighting holders are connected to the onboard power supply via a cable. The cable extends downward from the outer wall of the conical body 6 to the top of the inner skin panel assembly 3, is secured by a cable fixing angle piece 18, and then passes through a circular hole in the inner skin 15 of the inner skin panel assembly 3 to connect to the onboard power interface.

[0030] In some optional embodiments, such as Figure 5 As shown, the channel assembly 1 also includes a front channel 7, which has a base and a cylinder protruding upward relative to the base. The cylinder is docked with one end of the conical cylinder 6 through a docking strip 9, and when the conical cylinder 6 is extended into the refueling machine, the base of the front channel 7 can be attached and connected to the transverse frame 4 of the outer skin panel assembly 2 from the outside.

[0031] In this embodiment, the front channel 7 and the conical cylinder 6 are both made of stainless steel, and the two are riveted together by a butt joint strip 9 made of aluminum alloy. Figure 5The front end channel 7 has a base with a larger outer diameter than the conical cylinder 6. When the conical cylinder 6 of the channel assembly 1 passes through the outer skin wall panel assembly 2 and the inner skin wall panel assembly 3, the base of the front end channel 7 of the channel assembly 1 is stuck in the outer skin wall panel assembly 2 and can be connected to the cross frame 4 to ensure the stability of the channel assembly 1. At the same time, the part of the channel assembly 1 that passes through the inner skin wall panel assembly 3 is connected to the inner skin wall panel assembly 3 through the docking piece 19, further enhancing the connection stability of the channel assembly 1.

[0032] In some optional embodiments, the curved wall panels of the outer skin panel 5 include a middle outer skin 12, a side outer skin 13 and a rear outer skin 14, wherein the front end of the middle outer skin 12 is connected to the opening on the front side of the outer skin panel 5, the rear end is connected to the rear outer skin 14, the two sides are connected to the side outer skins 13, the front end of the side outer skin 13 is connected to the opening on the front side of the outer skin panel 5, and the outer side is connected to the external docking angle 10 at the top of the outer skin panel 5, and each outer skin is connected by a long beam 11.

[0033] like Figure 4 As shown, the middle outer skin 12 includes three pieces, the rear end of the middle piece is the rear outer skin 14, and two long beams 11 are used to connect these four outer skins. The side outer skins 13 include two pieces, and each side outer skin 13 is connected to the adjacent middle outer skin 12 through a long beam 11. The top of each side outer skin 13 is connected with an external docking angle 10. The long beam 11 is an angular or T-shaped machined part. All parts are connected by countersunk rivets or countersunk bolts. The side outer skins 13 are further detachably connected to the cross frame 4.

[0034] The aluminum alloy outer skins of the present application adopt a block design for easy maintenance, thereby improving the maintainability of the tanker umbrella cone tail cover.

[0035] In some optional embodiments, the transverse bulkhead frame 4 includes multiple sections, the front end frame 20 is close to the front opening of the outer skin panel 5, and the end frame 23 is close to the rear side of the outer skin panel 5. The front end frame 20 is an annular structure, and the other transverse bulkhead frames are semi-annular structures.

[0036] Figure 6 A schematic diagram of the four-section transverse bulkhead 4 is provided. Bulkhead Frame 1 21 and Bulkhead Frame 22 are positioned between the front end frame 20 and the rear end frame 23. Bulkhead Frame 1 21 is positioned closer to the front end frame 20, while Bulkhead Frame 22 is positioned closer to the rear end frame 23. Bulkhead Frame 1 21 has a smaller opening arc than Bulkhead Frame 22, and Bulkhead Frame 22 has a smaller opening arc than the rear end frame 23. The rear end frame 23 has an opening arc approaching 180°. In an alternative embodiment, a signal indicator light mounting hole is provided on the front end frame 20 for mounting the signal indicator light.

[0037] In some optional embodiments, the outer skins of the outer skin panel assembly 2, the transverse bulkheads and the long stringers 11 are connected by connecting angle pieces, and the connecting angle pieces include T-shaped angle pieces or L-shaped angle pieces.

[0038] In this embodiment, the connecting corner pieces are all aluminum alloy machined parts, which are used to connect the bulkheads, long stringers, skins, etc. together.

[0039] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A tanker tail cover, installed at the belly opening of the tanker, characterized in that: The tail cover includes: An inner skin panel assembly (3) has a through hole formed in the middle by an inner butt-jointed angle bar, the inner skin (15) is connected to the outside of the inner butt-jointed angle bar, and the inner skin panel assembly (3) is connected to the belly opening of the refueling machine through the inner butt-jointed angle bar in the middle; An outer skin panel assembly (2) comprises a transverse diaphragm (4) and an outer skin panel (5) supported by the transverse diaphragm (4), wherein the top side and the front side of the outer skin panel (5) are both formed with openings, and the other side surfaces are connected by arc-shaped panels, and the outer skin panel (5) is connected to the inner skin panel assembly (3) via an outer butt joint angle (10) on the top side; The channel assembly (1) sequentially passes through the outer skin panel assembly (2), the inner skin panel assembly (3) and the belly opening of the refueling machine, and then extends into the refueling machine. The channel assembly (1) includes a conical cylinder (6) for accommodating an umbrella cone.

2. The tanker cone tail cover according to claim 1, characterized in that: A plurality of cable fixing angle pieces (18) are provided on the inner skin (15) of the inner skin panel assembly (3), a through hole is provided on the wall of the conical cylinder (6) of the channel assembly (1), a lighting lamp holder (8) is installed in the through hole, and the lighting lamp is installed on the lighting lamp holder (8) inside the conical cylinder (6), and the cable from the refueling machine is fixed by the cable fixing angle piece (18) and electrically connected to the lighting lamp holder (8).

3. The tanker cone tail cover according to claim 1, characterized in that: The channel assembly (1) further comprises a front channel (7), the front channel (7) having a base and a cylinder protruding upward relative to the base, the cylinder being docked with one end of the conical cylinder (6) via a docking strip (9), and when the conical cylinder (6) is extended into the refueling machine, the base of the front channel (7) can be attached and connected to the transverse bulkhead (4) of the outer skin panel assembly (2) from the outside.

4. The tanker tail cover according to claim 1, characterized in that: The arc-shaped wall panel of the outer skin panel (5) includes a middle outer skin (12), a side outer skin (13) and a rear outer skin (14), wherein the front end of the middle outer skin (12) is connected to the opening on the front side of the outer skin panel (5), the rear end is connected to the rear outer skin (14), and both sides are connected to the side outer skins (13); the front end of the side outer skin (13) is connected to the opening on the front side of the outer skin panel (5), and the outer side is connected to the outer butt angle (10) at the top of the outer skin panel (5), and the outer skins are connected by long stringers (11).

5. The tanker tail cover according to claim 4, characterized in that: The transverse bulkhead frame (4) includes multiple sections, the front end frame (20) close to the front opening of the outer skin panel (5) is a front end frame (20), the rear end frame (23) close to the outer skin panel (5) is a rear end frame, the front end frame (20) is a ring structure, and the other transverse bulkhead frames are semi-ring structures.

6. The tanker tail cover according to claim 5, characterized in that: The outer skins of the outer skin panel assembly (2), the transverse bulkheads and the long stringers (11) are connected via connecting angle pieces, and the connecting angle pieces include T-shaped angle pieces or L-shaped angle pieces.

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