A connecting structure between the horizontal tail and the vertical tail of an aircraft and a method for disassembling and assembling the horizontal tail

Abstract

A connection structure between an aircraft horizontal tail and a vertical tail and a method for disassembling and assembling the horizontal tail. The connection structure includes a horizontal tail bracket and a vertical tail bracket. The horizontal tail bracket is a T-shaped joint structure. The upper end surface of the horizontal tail bracket is connected to the lower surface of the horizontal tail structural beam. The lower end of the horizontal tail bracket is a single-ear joint. The vertical tail bracket is an inverted T-shaped joint structure. The lower end surface of the vertical tail bracket supports on the top of the vertical tail beam structure. The upper end of the vertical tail bracket is a double-ear joint. The aircraft horizontal tail is docked at the double-ear joint of the vertical tail bracket of the vertical tail through the single-ear joint of the horizontal tail bracket and is tightly connected by a docking bolt. When disassembling and assembling the horizontal tail, the docking bolt connecting the horizontal tail bracket and the vertical tail bracket can be connected or opened through the maintenance covers on both sides of the vertical tail to implement the quick disassembly and assembly of the horizontal tail.

Description

Technical Field

[0001] The present application relates to the structural design of an aircraft tail, and specifically to a connection structure between a horizontal tail and a vertical tail of an aircraft and a disassembly and assembly method for the horizontal tail. Background Art

[0002] Currently, in aircraft structural design, the connection between a high-mounted horizontal tail and a single vertical tail generally adopts the method of aligning with a fixed bracket and passing bolts through the connection holes of the bracket, that is: fixing the horizontal tail bracket on the main load-bearing beam of the high-mounted horizontal tail component box section, fixing the vertical tail bracket on the top of the corresponding vertical tail box section, aligning the horizontal tail bracket with the vertical tail bracket during assembly, installing fixing bolts in the alignment area of the brackets, and then installing a fairing skin to envelope the connection part between the vertical tail and the horizontal tail to meet the aerodynamic requirements.

[0003] Problems existing in the prior art are: The horizontal tail bracket is generally fixedly installed at the cross-sectional position of the front and rear beams, and its base penetrates the entire horizontal tail box section, passing through the upper and lower flange areas of the front and rear beams, resulting in a relatively large volume of the bracket base and being difficult to replace. If the horizontal tail bracket is damaged during the use of the aircraft, the maintenance is very difficult: Generally, the maintenance measures are to use lifting equipment or a lifting work ladder to disassemble the fairing skin, disassemble the fixing bolts of the vertical and horizontal tails, disassemble the horizontal tail, disassemble the horizontal tail skin, remove the damaged horizontal tail bracket and discard it for replacement, then reinstall the horizontal tail bracket and the horizontal tail skin, lift the repaired horizontal tail to the top of the vertical tail for reinstallation, and finally reinstall the fairing skin. The maintenance time is long, the maintenance difficulty is large, there are many disassembled parts, and it requires long-term high-altitude operation; and when replacing the horizontal tail bracket, a special tooling is required for positioning, otherwise the hole positions for aligning the horizontal tail bracket and the vertical tail bracket are extremely prone to deviation, resulting in the inability to align the horizontal tail component with the vertical tail component.

[0004] The maintainability of the existing horizontal tail connection structure used on aircraft is extremely poor, and it is impossible to achieve the quick disassembly and assembly of the horizontal tail, nor can the replacement or maintenance of the horizontal tail bracket be realized without disassembling the horizontal tail. Summary of the Invention

[0005] The purpose of the present application is to provide a connection structure between a horizontal tail and a vertical tail of an aircraft and a disassembly and assembly method for the horizontal tail that can not only meet the need for quick disassembly and assembly of the horizontal tail but also completely solve the need for replacement or maintenance of the horizontal tail bracket.

[0006] A connection structure between a horizontal tail and a vertical tail of an aircraft, characterized in that the connection structure includes a horizontal tail bracket and a vertical tail bracket. The horizontal tail bracket is a T-shaped joint structure, the upper end surface of the horizontal tail bracket is connected to the lower surface of the horizontal tail structural beam, the lower end of the horizontal tail bracket is a single-ear joint, the vertical tail bracket is an inverted T-shaped joint structure, the lower end surface of the vertical tail bracket supports on the top of the vertical tail beam structure, the upper end of the vertical tail bracket is a double-ear joint, and the aircraft horizontal tail is docked at the double-ear joint of the vertical tail bracket of the vertical tail through the single-ear joint of the horizontal tail bracket and is fixedly connected by docking bolts.

[0007] The connecting structure between the horizontal tail and the vertical tail of the aircraft is characterized in that a fixed bottom plate is provided on the lower surfaces of the front beam and the rear beam of the horizontal tail, and four horizontal tail brackets are respectively fixed on the front beam and the rear beam of the horizontal tail through the fixed bottom plate, corresponding to the vertical tail brackets.

[0008] The connecting structure between the horizontal tail and the vertical tail of the aircraft is characterized in that a connecting bottom plate is provided at the tops of the front beam and the rear beam of the vertical tail, and four vertical tail brackets are respectively fixed on the front beam and the rear beam of the vertical tail through the connecting bottom plate, corresponding to the horizontal tail brackets.

[0009] The connecting structure between the horizontal tail and the vertical tail of the aircraft is characterized in that the lower end of the horizontal tail bracket extends out of the lower skin of the horizontal tail, and a maintenance access cover for the horizontal tail bracket is provided on the upper skin of the horizontal tail.

[0010] The connecting structure between the horizontal tail and the vertical tail of the aircraft is characterized in that maintenance access covers are provided on both sides of the vertical tail.

[0011] A method for disassembling and assembling the horizontal tail of an aircraft is characterized by including the following steps: 1) The horizontal tail is fixed at the top of the vertical tail through a connecting structure. The connecting structure includes a horizontal tail bracket and a vertical tail bracket. The horizontal tail bracket is a T-shaped joint structure. The upper end surface of the horizontal tail bracket is connected to the lower surface of the horizontal tail structural beam. The lower end of the horizontal tail bracket is a single-ear joint. The vertical tail bracket is an inverted T-shaped joint structure. The lower end surface of the vertical tail bracket supports on the top of the vertical tail beam structure. The upper end of the vertical tail bracket is a double-ear joint. The horizontal tail of the aircraft is docked with the double-ear joint of the vertical tail bracket of the vertical tail through the single-ear joint of the horizontal tail bracket and is bolted and fastened. The lower end of the horizontal tail bracket extends out of the lower skin of the horizontal tail, and a maintenance access cover for the horizontal tail bracket is provided on the upper skin of the horizontal tail. Maintenance access covers are provided on both sides of the vertical tail. 2) When installing the horizontal tail, open the maintenance access covers on both sides of the vertical tail, adjust the angle of the horizontal tail to align the single-ear joint of the horizontal tail bracket with the double-ear joint of the vertical tail bracket, use the docking bolts to dock and fix the horizontal tail bracket and the vertical tail bracket, and then restore the maintenance access covers on both sides of the vertical tail to complete the docking of the horizontal tail on the vertical tail. 3) When disassembling the horizontal tail, also open the maintenance access covers on both sides of the vertical tail, disassemble and extract the docking bolts connecting the horizontal tail bracket and the vertical tail bracket, and the horizontal tail and the vertical tail can be quickly disassembled and separated.

[0012] The beneficial effects of this application are as follows: 1) The connection bases of the first front support of the horizontal tail, the second front support of the horizontal tail, the first rear support of the horizontal tail, and the second rear support of the horizontal tail with the front beam of the horizontal tail box section and the rear beam of the horizontal tail are located outside the horizontal tail box section. When replacing the horizontal tail support, it is not necessary to disassemble the horizontal tail and decompose the skin. Only by decomposing the connection bolts of this support through the maintenance access panel can the replacement of the horizontal tail support be achieved. At the same time, the fixation of the horizontal tail support on the connection base plate is completed by multiple bolts, which can ensure that the positioning of the support after replacement remains unchanged, and there is no need for a specially designed positioning tooling. This structural form can achieve the replacement or repair of the horizontal tail support without disassembling the horizontal tail. 2) The horizontal tail maintenance access panel and the vertical tail maintenance access panel are respectively connected to the horizontal tail box section and the vertical tail box section in the form of quick-release locks, which can be quickly disassembled and installed. By pulling out the connection bolts between the horizontal tail support and the vertical tail support through the vertical tail maintenance access panel, the horizontal tail can be removed, and by installing the connection bolts, the horizontal tail can be installed. The quick installation and disassembly of the horizontal tail are realized. 3) The connection structure between the horizontal tail and the vertical tail of this application can meet the need for quick disassembly and assembly of the horizontal tail, completely solve the problems that the horizontal tail support is difficult to maintain and the damaged support is difficult to replace, and can meet the requirements of replacing single or multiple horizontal tail supports without disassembling the horizontal tail. At the same time, the structure is simple, easy to assemble, can be applied to various types of aircraft, and has a wide range of applications.

[0013] The following further elaborates on this application in detail with reference to the accompanying drawings of the embodiments. Brief Description of the Drawings

[0014] Figure 1 It is a schematic diagram of the parts included in the connection structure between the horizontal tail and the vertical tail of the aircraft.

[0015] Figure 2 It is a schematic diagram of the connection relationship between the horizontal tail support and the vertical tail support.

[0016] Figure 3 It is a schematic cross-sectional view of the connection structure between the horizontal tail and the vertical tail of the aircraft.

[0017] Figure 4 It is a schematic diagram of the maintenance access panel of the connection structure between the horizontal tail and the vertical tail of the aircraft.

[0018] Explanation of the numbers in the figure:: 1. The first front support of the horizontal tail, 2. The second front support of the horizontal tail, 3. The first rear support of the horizontal tail, 4. The second rear support of the horizontal tail, 5. The first front support of the vertical tail, 6. The second front support of the vertical tail, 7. The first rear support of the vertical tail, 8. The second rear support of the vertical tail, 9. The fixed base plate, 10. The horizontal tail maintenance access panel, 11. The first maintenance access panel of the vertical tail, 12. The second maintenance access panel of the vertical tail, 13. The vertical and horizontal tail docking bolt assembly, 14. The front beam of the horizontal tail, 15. The rear beam of the horizontal tail, 16. The front beam of the vertical tail, 17. The rear beam of the vertical tail, 18. The connection base plate. Detailed Embodiment

[0019] Referring to the attached drawings, for the connection structure between the horizontal tail and the vertical tail proposed in this application, the horizontal tail bracket is of a T-shaped joint structure. The upper end face of the horizontal tail bracket is connected to the lower surface of the horizontal tail structural beam, and the lower end of the horizontal tail bracket is a single-ear joint. In the embodiment, the horizontal tail bracket includes a first front horizontal tail bracket 1, a second front horizontal tail bracket 2, a first rear horizontal tail bracket 3, and a second rear horizontal tail bracket 4. The vertical tail bracket is of an inverted T-shaped joint structure. The lower end face of the vertical tail bracket supports on the top of the vertical tail beam structure, and the upper end of the vertical tail bracket is a double-ear joint. In the embodiment, the vertical tail bracket includes a first front vertical tail bracket 5, a second front vertical tail bracket 6, a first rear vertical tail bracket 7, and a second rear vertical tail bracket 8. The horizontal tail of the aircraft is docked at the double-ear joint of the vertical tail bracket of the vertical tail through the single-ear joint of the horizontal tail bracket, and is fixedly connected by screwing the horizontal tail docking bolt assembly 13.

[0020] A fixed bottom plate 9 is provided on the lower surfaces of the front horizontal tail beam 14 and the rear horizontal tail beam 15. The four horizontal tail brackets are respectively fixed on the front and rear horizontal tail beams through the fixed bottom plate 9. Corresponding to the vertical tail brackets, the lower ends of the four horizontal tail brackets extend out of the lower skin of the horizontal tail, and a horizontal tail maintenance access cover 10 is provided on the upper skin of the horizontal tail.

[0021] A connection bottom plate 18 is provided at the tops of the front vertical tail beam 16 and the rear vertical tail beam 17. The four vertical tail brackets are fixed on the front and rear vertical tail beams through the connection bottom plate 18. Corresponding to the horizontal tail brackets, a first vertical tail maintenance access cover 11 is provided on the right side of the vertical tail, and a second vertical tail maintenance access cover 12 is provided on the left side of the vertical tail.

[0022] The fixed bottom plate 9 of the horizontal tail bracket is fixedly connected to the lower part of the horizontal tail box section; the first front horizontal tail bracket 1, the second front horizontal tail bracket 2, the first rear horizontal tail bracket 3, and the second rear horizontal tail bracket 4 are connected at the position below the fixed bottom plate 9 and are fixed by inserting bolts from the outside to the inside. The backing nuts are arranged inside the flange strips of the front horizontal tail beam 14 and the rear horizontal tail beam 15 in the horizontal tail box section; the horizontal tail maintenance access cover 10 is installed on the skin surface of the upper wing surface of the horizontal tail box section, and quick-release locks are arranged around the access cover, and the lock seats are installed on the edge of the upper skin of the horizontal tail box section. The first front vertical tail bracket 5, the second front vertical tail bracket 6, the first rear vertical tail bracket 7, and the second rear vertical tail bracket 8 penetrate the web of the connection bottom plate 18 of the front and rear vertical tail beams and are connected to the front vertical tail beam 16 and the rear vertical tail beam 17; among them, the first front vertical tail bracket 5 and the second front vertical tail bracket 6 are fixedly connected to the corner box bends of the front vertical tail beam 14; the first rear vertical tail bracket 7 and the second rear vertical tail bracket 8 are fixedly connected to the corner box bends of the rear vertical tail beam 15; the vertical tail brackets are fixed by inserting bolts from top to bottom, and the nuts are arranged inside the corner box bends of the front vertical tail beam 16 and the rear vertical tail beam 17 in the vertical tail box section. The first vertical tail maintenance access cover 11 is installed on the left side of the vertical tail wing surface, and quick-release locks are arranged around the access cover, and the lock seats are installed on the edge of the left skin of the vertical tail box section; the second vertical tail maintenance access cover 12 is installed on the right side of the vertical tail wing surface, and the structural form is completely symmetrical to that of the first vertical tail maintenance access cover 11.

[0023] When installing the horizontal stabilizer, first open the quick-release locks on the first vertical stabilizer maintenance cover 11 and the second vertical stabilizer maintenance cover 12, and remove the above two covers; adjust the angle of the horizontal stabilizer to align the first front bracket 1 of the horizontal stabilizer with the first front bracket 5 of the vertical stabilizer, the second front bracket 2 of the horizontal stabilizer with the second front bracket 6 of the vertical stabilizer, the first rear bracket 3 of the horizontal stabilizer with the first rear bracket 7 of the vertical stabilizer, and the second rear bracket 4 of the horizontal stabilizer with the second rear bracket 8 of the vertical stabilizer. Then, use four vertical and horizontal stabilizer docking bolt assemblies 13 to pass through the bracket docking holes; then restore the quick-release locks of the first vertical stabilizer maintenance cover 11 and the second vertical stabilizer maintenance cover 12 to complete the docking of the high horizontal stabilizer on the vertical stabilizer.

[0024] When disassembling the horizontal stabilizer, first open the quick-release locks on the first vertical stabilizer maintenance cover 11 and the second vertical stabilizer maintenance cover 12, and remove the above two covers; then pull out the four vertical and horizontal stabilizer docking bolt assemblies 13 passing through the fixed brackets to complete the quick disassembly of the horizontal stabilizer.

[0025] When replacing the first front bracket 1 of the horizontal stabilizer, open the quick-release lock on the second vertical stabilizer maintenance cover 12, remove the cover, disassemble the vertical and horizontal stabilizer docking bolt assembly 13 passing through the first front bracket 1 of the horizontal stabilizer and the first front bracket 5 of the vertical stabilizer, disassemble the fixing bolts of the first front bracket 1 of the horizontal stabilizer and the horizontal stabilizer box section, remove the first front bracket 1 of the horizontal stabilizer, install the new first front bracket 1 of the horizontal stabilizer in place, restore the installation of the vertical and horizontal stabilizer docking bolt assembly 13, and then install the second vertical stabilizer maintenance cover 12 to replace the horizontal stabilizer bracket without disassembling the horizontal stabilizer and disassembling the skin. When replacing the second front bracket 2, the first rear bracket 3, and the second rear bracket 4 of the horizontal stabilizer, perform similarly.

Claims

1. A method for disassembling and assembling the horizontal tail of an aircraft, characterized in that It includes the following: 1) The horizontal tail is fixed to the top of the vertical tail through a connection structure. The connection structure includes a horizontal tail bracket and a vertical tail bracket. The horizontal tail bracket is a T-shaped joint structure. The upper surface of the horizontal tail bracket is connected to the lower surface of the horizontal tail structural beam. The lower end of the horizontal tail bracket is a single-ear joint. The vertical tail bracket is an inverted T-shaped joint structure. The lower surface of the vertical tail bracket supports on the top of the vertical tail beam structure. The upper end of the vertical tail bracket is a double-ear joint. The aircraft horizontal tail is docked to the double-ear joint of the vertical tail bracket of the vertical tail through the single-ear joint of the horizontal tail bracket and is bolted and fastened. The lower end of the horizontal tail bracket extends out of the lower skin of the horizontal tail. A maintenance access cover for the horizontal tail bracket is provided on the upper skin of the horizontal tail. Maintenance access covers are provided on both sides of the vertical tail. 2) When installing the horizontal tail, open the maintenance access covers on both sides of the vertical tail, adjust the angle of the horizontal tail to align the single-ear joint of the horizontal tail bracket with the double-ear joint of the vertical tail bracket, use the docking bolts to dock and fix the horizontal tail bracket and the vertical tail bracket, and then restore the maintenance access covers on both sides of the vertical tail to complete the docking of the aircraft horizontal tail on the vertical tail. 3) When disassembling the horizontal tail, similarly open the maintenance access covers on both sides of the vertical tail, disassemble and extract the docking bolts connecting the horizontal tail bracket and the vertical tail bracket, and the horizontal tail can be quickly disassembled and separated from the vertical tail.

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