Hinge support mounting structure for cabin door of aircraft landing gear

Abstract

The invention belongs to the technical field of aircraft landing gear cabin door hinge installation design, and particularly relates to an aircraft landing gear cabin door hinge support installation structure which is used for installation and load diffusion of a cabin door hinge support, can meet the installation and movement requirements of a cabin door hinge, avoids a large opening in the side wall of a cabin, and improves the service life of the cabin door. Concentrated loads on the cabin door hinge are effectively diffused, and meanwhile maintenance of the cabin door hinge is facilitated to a great extent.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of aircraft landing gear door hinge mounting design, and particularly relates to an aircraft landing gear door hinge support mounting structure. BACKGROUND

[0002] The aircraft landing gear door hinge and the hinge support are connected by a pin shaft at a rotating shaft, and the door rotates around the shaft to be opened and closed. The door hinge and the pin shaft are rotating parts, which require regular inspection and maintenance.

[0003] The aircraft landing gear door rotating shaft is usually arranged outside the cabin side wall and close to the cabin outer bottom wall, and a large opening structure needs to be designed on the cabin side wall to provide space for the movement of the door hinge, which is not conducive to the structural arrangement and load transmission of the cabin side wall, and the door hinge and the hinge support are located in different cabins, which causes many inconveniences for structural maintenance and inspection.

[0004] The present application is proposed in view of the above technical defects. SUMMARY

[0005] The purpose of the present application is to provide an aircraft landing gear door hinge support mounting structure, which has good overall structural rigidity and high continuity, can effectively spread the door hinge load to the cabin side wall and the cabin outer bottom wall, meet the installation and movement requirements of the door hinge, and is convenient for installation, inspection and maintenance and has good accessibility.

[0006] The technical solution of the present application is:

[0007] An aircraft landing gear door hinge support mounting structure, comprising a door hinge, a hinge support, a cabin side wall, a cabin outer bottom wall, a mounting corner box and a reinforcing corner piece.

[0008] The mounting corner box comprises a side wall, a bottom wall, an inclined wall and an end wall, wherein the side wall and the bottom wall are connected vertically, the inclined wall is connected between the side wall and the bottom wall, the end wall has two ends connected to the inclined wall, and the end wall is connected to the side wall and the bottom wall to form a cavity.

[0009] The edge of the side wall connected to the bottom wall in the mounting corner box has a rectangular opening, and the edge of the bottom wall connected to the side wall has a strip-shaped opening, the width of the strip-shaped opening is smaller than the width of the rectangular opening, and the strip-shaped opening is in communication with the rectangular opening.

[0010] The side wall of the mounting corner box is attached to the outside of the cabin side wall, and the bottom wall is attached to the top of the cabin outer bottom wall.

[0011] A rectangular opening is formed on the cabin side wall, and a strip-shaped opening is formed on the cabin outer bottom wall.

[0012] The hinge support is arranged in the cavity of the mounting corner box, and includes a connecting plate and two support plates, wherein the connecting plate is attached to the inner side of the inclined wall of the mounting corner box; the two support plates are arranged oppositely and are aligned with the two edges of the strip-shaped opening in the bottom wall of the mounting corner box, and are connected to the connecting plate;

[0013] The cabin door hinge extends into the two support plates of the hinge support and is connected to the two support plates through a pin shaft.

[0014] The reinforcing corner piece has two sides, is arranged in the cavity of the mounting corner box, and is attached to the outer side of the two support plates of the hinge support on one side, has a circular-arc-shaped notch around the pin shaft on the upper edge, and is attached to the bottom wall of the mounting corner box on the other side, and the bottom wall of the mounting corner box and the outer bottom wall of the cabin are connected through bolts.

[0015] According to at least one embodiment of the present application, in the above-mentioned aircraft landing gear cabin door hinge support mounting structure, the inclined wall in the mounting corner box is arc-shaped.

[0016] In the mounting corner box, a plurality of angle-shaped ribs are arranged between the inclined wall and the side wall and the bottom wall, and an angle-shaped rib is arranged between the two end walls and the bottom wall.

[0017] According to at least one embodiment of the present application, in the above-mentioned aircraft landing gear cabin door hinge support mounting structure, the rectangular opening in the side wall of the cabin is consistent with the rectangular opening in the side wall of the mounting corner box, and the edges have reinforcing ribs.

[0018] According to at least one embodiment of the present application, in the above-mentioned aircraft landing gear cabin door hinge support mounting structure, the strip-shaped opening in the outer bottom wall of the cabin is consistent with the strip-shaped opening in the side wall of the mounting corner box.

[0019] According to at least one embodiment of the present application, in the above-mentioned aircraft landing gear cabin door hinge support mounting structure, the connecting plate in the hinge support is connected to the inclined wall through bolts.

[0020] According to at least one embodiment of the present application, in the above-mentioned aircraft landing gear cabin door hinge support mounting structure, the two support plates in the hinge support are aligned with the two edges of the strip-shaped opening in the bottom wall of the mounting corner box, and the edges are shaped according to the side wall and the bottom wall of the mounting corner box.

[0021] According to at least one embodiment of the present application, in the above-mentioned aircraft landing gear cabin door hinge support mounting structure, the outer side of the two support plates in the hinge support has ribs at a position above the pin shaft.

[0022] According to at least one embodiment of the present application, in the above-mentioned aircraft landing gear cabin door hinge support mounting structure, the angle-shaped rib arranged between the two end walls and the bottom wall of the mounting corner box is in the axial direction of the pin shaft.

[0023] According to at least one of the embodiments of the present application, in the aircraft landing gear door hinge support mounting structure described above, the two reinforcing angle pieces are bolted to the two support plates of the hinge support.

[0024] According to at least one of the embodiments of the present application, in the aircraft landing gear door hinge support mounting structure described above, the angle-shaped edge strip is further included.

[0025] The two side walls of the angle-shaped edge strip are attached to the outside of the cabin side wall and above the cabin outer bottom wall, one end is inserted between the installation angle box side wall and the cabin side wall, and between the installation angle box bottom wall and the cabin outer bottom wall, and the end is bolted to the installation angle box side wall, bottom wall, cabin side wall and cabin outer bottom wall.

[0026] According to at least one of the embodiments of the present application, in the aircraft landing gear door hinge support mounting structure described above, the two side walls of the angle-shaped edge strip are bolted to the cabin side wall and the cabin outer bottom wall.

[0027] According to at least one of the embodiments of the present application, in the aircraft landing gear door hinge support mounting structure described above, the side wall and the bottom wall of the installation angle box are formed with an angle-shaped recess for the insertion of the angle-shaped edge strip.

[0028] The present application has at least the following beneficial technical effects:

[0029] The present application provides an aircraft landing gear door hinge support mounting structure for the installation and load diffusion of the door hinge support, which can meet the installation and movement requirements of the door hinge, avoid large openings in the cabin side wall, effectively diffuse the concentrated load on the door hinge, and greatly facilitate the maintenance of the door hinge. BRIEF DESCRIPTION OF DRAWINGS

[0030] Fig. 1 is a structural schematic diagram of the aircraft landing gear door hinge support mounting structure provided by the embodiments of the present application;

[0031] Fig. 2 is an assembly schematic diagram of the aircraft landing gear door hinge support mounting structure provided by the embodiments of the present application;

[0032] Among them:

[0033] 1-door hinge; 2-hinge support; 3-cabin side wall; 4-cabin outer bottom wall; 5-installation angle box; 6-reinforcing angle piece; 7-angle-shaped edge strip.

[0034] In order to better illustrate the embodiments, some contents of the drawings may be omitted, enlarged or reduced, which are only used for exemplary description and cannot be understood as a limitation of the present application. DETAILED DESCRIPTION

[0035] In order to make the technical solutions of the present application and the advantages thereof clearer, the technical solutions of the present application will be further clearly and completely described below with reference to the drawings. It should be understood that the specific embodiments described herein are only some of the embodiments of the present application, which are used to explain the present application, but not to limit the present application. It should be noted that, for the purpose of description, only parts related to the present application are shown in the drawings, and other related parts can be referred to the general design.

[0036] In addition, unless otherwise defined, the technical terms or scientific terms used in the description of the present application should be the general meanings understood by the general skilled person in the field to which the present application belongs. In the description of the present application, "comprising" indicates that the concept appearing before the word encompasses the concepts listed after the word and their equivalents, and does not exclude other associated concepts.

[0037] In addition, the words expressing the position used in the description of the present application are only used to express the relative direction or positional relationship, and when the absolute position of the described object changes, the relative positional relationship may also change accordingly. It should be noted that, unless otherwise explicitly specified and limited, the "installation", "connection" and the like used in the description of the present application should be understood in a broad sense, for example, the connection can be a fixed connection or a detachable connection; can be a mechanical connection or an electrical connection; can be directly connected or indirectly connected through an intermediate medium, and the skilled person in the art can understand the specific meaning of the present application according to the specific circumstances.

[0038] An aircraft landing gear cabin door hinge support mounting structure is a semi-closed mounting structure, which is used to solve the problem that the current cabin door hinge passes through the cabin side wall, causing a large opening in the structure, and the pin shaft and the cabin door are in different cabins, which is inconvenient for maintenance, comprising a cabin door hinge 1, a hinge support 2, a cabin side wall 3, a cabin outer bottom wall 4, an installation corner box 5, an enhanced corner piece 6, and a corner edge strip 7, as shown in Figs. 1-2 .

[0039] The installation corner box 5 comprises a side wall a, a bottom wall b, an inclined wall c, and an end wall d, wherein the side wall a and the bottom wall b are connected vertically, the inclined wall c is connected between the side wall a and the bottom wall b, and the end wall d has two ends connected to the inclined wall c and connected to the side wall a and the bottom wall b to form a cavity.

[0040] The installation corner box 5 is a semi-closed box structure, which provides an operation space for the installation and maintenance of the hinge support 2, and is used for installing the hinge support 2 and dispersing the load. The inclined wall c can be designed to be arc-shaped, the edge of the side wall a connected to the bottom wall b has a rectangular opening, the edge of the bottom wall b connected to the side wall a has a strip-shaped opening, the width of the strip-shaped opening is smaller than the width of the rectangular opening, and the strip-shaped opening is in communication with the rectangular opening.

[0041] In the installation corner box 5, the inclined wall c is provided with a plurality of angle-shaped ribs between the side wall a and the bottom wall b, and the angle-shaped ribs are provided between the two end walls d and the bottom wall b.

[0042] The side wall a of the installation corner box 5 is attached to the outside of the cabin side wall 3 and is bolted to the cabin side wall 3, and the bottom wall b is attached to the top of the cabin outer bottom wall 4 and is bolted to the cabin outer bottom wall 4.

[0043] A rectangular opening is formed in the cabin side wall 3, which is consistent with the rectangular opening in the side wall a of the installation corner box 5, and the edges are reinforced.

[0044] A strip-shaped opening is formed in the cabin outer bottom wall 4, which is consistent with the strip-shaped opening in the side wall a of the installation corner box 5, so that the installation corner box 5 can be used for strength reinforcement.

[0045] The hinge support 2 is arranged in the cavity of the installation corner box 5 and includes a connecting plate and a support plate. The connecting plate is attached to the inner side of the inclined wall c of the installation corner box 5 and is bolted to the inclined wall c. The support plate has two opposite support plates, which are aligned with the two edges of the strip-shaped opening in the bottom wall b of the installation corner box 5, are connected to the connecting plate, and the edges are shaped according to the side wall a and the bottom wall b of the installation corner box 5.

[0046] The width and depth of the space between the two support plates of the hinge support 2 are determined according to the movement envelope of the hatch hinge 1, which meets the requirements of the rotation space and clearance of the hatch hinge 1. The rectangular openings in the side wall a of the installation corner box 5 and the cabin side wall 3 meet the space requirements for the installation and maintenance operation of the hinge support 2. The strip-shaped openings in the bottom wall b of the installation corner box 5 and the cabin outer bottom wall 4 meet the requirements of the movement space of the hatch hinge 1.

[0047] The hatch hinge 1 extends into the two support plates of the hinge support 2 and is connected to the two support plates through a pin shaft. The outer side of the two support plates has a rib above the pin shaft for structural reinforcement.

[0048] The cabin door load is transmitted to the installation corner box 5 through the hatch hinge 1 and the hinge support 2, and then diffused to the cabin side wall 3 and the cabin outer bottom wall 4. The angle-shaped ribs between the two end walls d and the bottom wall b of the installation corner box 5 are in the axial direction of the pin shaft, which ensures the structural stiffness and controls the deformation.

[0049] The reinforced corner piece 6 has two sides, which are attached to the outer side of the two support plates of the hinge support 2 and are bolted to the support plates. The upper edge has a circular arc-shaped notch around the pin shaft. The other side is attached to the bottom wall b of the installation corner box 5 and is bolted to the bottom wall b of the installation corner box 5 and the cabin outer bottom wall 4 for structural reinforcement.

[0050] The reinforcing corner piece 6 forms a small box segment structure in the cavity of the mounting corner box 5, avoiding the strip-shaped opening edge of the bottom wall b of the mounting corner box 5 to be a free edge, and improving the overall integrity and rigidity of the structure.

[0051] The two side walls of the corner-shaped edge strip 7 are attached to the outside of the cabin side wall 3 and above the cabin outer bottom wall 4, and are connected to the cabin side wall 3 and the cabin outer bottom wall 4 by bolts. One end is inserted between the side wall a of the mounting corner box 5 and the cabin side wall 3, and between the bottom wall b of the mounting corner box 5 and the cabin outer bottom wall 4. The end is connected to the side wall a and the bottom wall b of the mounting corner box 5, and the cabin side wall 3 and the cabin outer bottom wall 4 by bolts.

[0052] The side wall a and the bottom wall b of the mounting corner box 5 are formed with corner-shaped recesses for the insertion of the corner-shaped edge strip 7, ensuring the continuity of the structure.

[0053] The aircraft landing gear door hinge support mounting structure disclosed in the above embodiments is designed based on a semi-closed mounting corner box 5. The mounting corner box 5 is arranged at the lower edge of the cabin side wall 3 and the cabin outer bottom wall 4, enhancing the structural rigidity to ensure load transmission. The mounting corner box 5 provides a movement space for the door hinge 1, and spatially separates the door hinge 1 and the hinge support 2 from the outside of the cabin side wall 3 to the side of the door. The door hinge 1 and the pin shaft are in the same cabin as the door in space, and can be easily accessed when the door is opened, providing a spacious space for the installation, inspection and maintenance of the door hinge 1.

[0054] In the aircraft landing gear door hinge support mounting structure disclosed in the above embodiments, the semi-closed mounting corner box 5 is arranged by relying on the cabin side wall 3 and the cabin outer bottom wall 4, avoiding the use of the door hinge 1 to cause a large opening on the cabin side wall 3 and affecting the structural load transmission. The mounting corner box 5 itself can reinforce the opening on the cabin side wall 3 and the cabin outer bottom wall 4, ensuring the continuity of the structure and the diffusion of the hinge load.

[0055] So far, the technical solution of the present application has been described in conjunction with the preferred embodiments shown in the drawings. Those skilled in the art should understand that the protection scope of the present application is obviously not limited to these specific embodiments. Without deviating from the principles of the present application, those skilled in the art can make equivalent changes or replacements to related technical features, and the technical solutions after these changes or replacements will fall within the protection scope of the present application.

Claims

1. An aircraft landing gear bay door hinge support mounting structure, characterised in that, The cabin door hinge (1), the hinge support (2), the cabin side wall (3), the cabin outer bottom wall (4), the installation corner box (5), the reinforced corner piece (6); The installation corner box (5) includes a side wall (a), a bottom wall (b), an inclined wall (c), and two end walls (d), wherein the side wall (a) and the bottom wall (b) are connected vertically, the inclined wall (c) is connected between the side wall (a) and the bottom wall (b), and the two end walls (d) are connected at both ends of the inclined wall (c) and connected with the side wall (a) and the bottom wall (b) to form a cavity; The edge of the side wall (a) and the bottom wall (b) of the installation corner box (5) has a rectangular opening, and the edge of the bottom wall (b) and the side wall (a) has a strip-shaped opening, the width of the strip-shaped opening is smaller than the width of the rectangular opening, and the strip-shaped opening is in communication with the rectangular opening; The side wall (a) of the installation corner box (5) is attached to the outside of the cabin side wall (3), and the bottom wall (b) is attached above the cabin outer bottom wall (4); The cabin side wall (3) is provided with a rectangular opening, and the cabin outer bottom wall (4) is provided with a strip-shaped opening; The hinge support (2) is arranged in the cavity of the installation corner box (5) and includes a connecting plate and two support plates, wherein the connecting plate is attached to the inner side of the inclined wall (c) of the installation corner box (5); the two support plates are arranged opposite to each other, aligned with the two edges of the strip-shaped opening on the bottom wall (b) of the installation corner box (5), and connected to the connecting plate; The cabin door hinge (1) extends between the two support plates of the hinge support (2) and is connected to the two support plates through a pin shaft; The two reinforced corner pieces (6) are arranged in the cavity of the installation corner box (5), one side wall of each of the two reinforced corner pieces (6) is attached to the outside of the two support plates of the hinge support (2), the upper edge of each of the two reinforced corner pieces (6) has a circular-arc-shaped notch around the pin shaft, and the other side wall of each of the two reinforced corner pieces (6) is connected to and attached to the bottom wall (b) of the installation corner box (5) and connected to the bottom wall (b) of the installation corner box (5) and the cabin outer bottom wall (4) through a bolt.

2. The aircraft landing gear door hinge support mounting structure according to claim 1, wherein The inclined wall (c) of the installation corner box (5) is arc-shaped. In the installation corner box (5), a plurality of angular ribbons are arranged between the inclined wall (c) and the side wall (a) and the bottom wall (b), and an angular ribbon is arranged between the two end walls (d) and the bottom wall (b).

3. The aircraft landing gear bay door hinge support mounting structure according to claim 2, wherein The rectangular opening on the cabin side wall (3) is consistent with the rectangular opening on the side wall (a) of the installation corner box (5) and has a reinforced edge.

4. The aircraft landing gear bay door hinge support mounting structure according to claim 3, wherein The strip-shaped opening on the cabin outer bottom wall (4) is consistent with the strip-shaped opening on the side wall (a) of the installation corner box (5).

5. The aircraft landing gear door hinge support mounting structure according to claim 4, wherein The connecting plate of the hinge support (2) is connected to the inclined wall (c) through a bolt.

6. The aircraft landing gear bay door hinge support mounting structure according to claim 5, wherein The two support plates of the hinge support (2) are aligned with the two edges of the strip-shaped opening on the bottom wall (b) of the installation corner box (5), and the edges are shaped according to the side wall (a) and the bottom wall (b) of the installation corner box (5).

7. The aircraft landing gear bay door hinge support mounting structure according to claim 6, wherein The outer side of the two support plates of the hinge support (2) has a rib at a position above the pin shaft.

8. The aircraft landing gear bay door hinge support mounting structure according to claim 7, wherein, The angular ribbons arranged between the two end walls (d) and the bottom wall (b) of the installation corner box (5) are in the axial direction of the pin shaft.

9. An aircraft landing gear bay door hinge support mounting structure according to claim 8, characterised in that, The two reinforced corner pieces (6) are connected to the two support plates of the hinge support (2) through a bolt.

10. The aircraft landing gear door hinge support mounting structure according to claim 9, wherein, It also includes an angular edge ribbon (7). The two side walls of the corner edge strip (7) are attached to the outside of the cabin side wall (3) and above the cabin outer bottom wall (4), one end is inserted between the side wall (a) of the mounting corner box (5) and the cabin side wall (3), and between the bottom wall (b) of the mounting corner box (5) and the cabin outer bottom wall (4), and the end is connected by bolts to the side wall (a) and the bottom wall (b) of the mounting corner box (5), and the cabin side wall (3) and the cabin outer bottom wall (4).

11. An aircraft landing gear bay door hinge support mounting structure according to claim 10, characterised in that, The two side walls of the corner edge strip (7) are connected by bolts to the cabin side wall (3) and the cabin outer bottom wall (4).

12. An aircraft landing gear bay door hinge support mounting structure according to claim 11, characterised in that, The side wall (a) and the bottom wall (b) of the mounting corner box (5) are formed with corner recesses for the insertion of the corner edge strip (7).

Images