Fixed-frequency-vibration-resistant heavy-weight airborne equipment mounting structure

Abstract

The invention belongs to the technical field of narrow-band superposition random vibration, and particularly relates to a large-weight airborne equipment mounting structure resistant to fixed-frequency vibration. According to the structure, a fixing plate comprises a first transverse plate and a first vertical plate, the first vertical plate is provided with an outer edge matched with a machine body structure in shape, and the outer edge of the first vertical plate is connected with the machine body structure through bolts; the fixed beam comprises a second transverse plate and a second vertical plate, and the second vertical plate is connected with the machine body structure through bolts; the cross beam comprises an upper margin plate, a lower margin plate and a cross beam web connected with the upper margin plate and the lower margin plate, one end of the lower margin plate is connected with the first transverse plate through a bolt, the other end of the lower margin plate is connected with the second transverse plate through a bolt, and the upper margin plate is used for installing airborne equipment; the lug comprises an upper flange, a lower flange and a lug web connected with the upper flange and the lower flange, the lower flange is connected with the first transverse plate through a bolt, and the upper flange is used for mounting airborne equipment. According to the invention, the operation requirement of heavy-weight airborne equipment can be well met, and the narrow-band stacking random vibration environment requirement can be met.

Description

Technical Field

[0001] The present application belongs to the technical field of narrow-band superimposed random vibration, and in particular relates to a heavy-weight airborne equipment installation structure that is resistant to fixed-frequency vibration. Background Art

[0002] At present, there are many onboard equipment on aircraft with fixed-frequency power equipment. However, due to the different installation locations and onboard spaces of different equipment, especially in propeller aircraft models, deviations from the expected environmental requirements often occur. Therefore, a mounting structure form is needed that can better adapt to different frequencies and meet the requirements of heavier onboard equipment.

[0003] Therefore, it is desired to have a technical solution to overcome or at least alleviate at least one of the above-mentioned defects of the prior art. Summary of the invention

[0004] The purpose of the present application is to provide a heavy-weight airborne equipment installation structure that is resistant to fixed-frequency vibration, so as to solve at least one problem existing in the prior art.

[0005] The technical solution of this application is:

[0006] A heavy-weight airborne equipment mounting structure resistant to fixed-frequency vibration, comprising:

[0007] A fixing plate, the fixing plate comprising a first transverse plate and a first vertical plate, the first vertical plate having an outer edge adapted to the shape of the machine body structure, the outer edge of the first vertical plate being connected to the machine body structure by bolts;

[0008] A fixed beam, the fixed beam comprising a second transverse plate and a second vertical plate, the second vertical plate being connected to the body structure by bolts;

[0009] A cross beam, wherein the cross beam comprises an upper edge plate, a lower edge plate, and a cross beam web connected to the upper edge plate and the lower edge plate, one end of the lower edge plate is connected to the first cross plate by bolts, and the other end is connected to the second cross plate by bolts, and the upper edge plate is used to install airborne equipment;

[0010] The ear piece includes an upper flange, a lower flange, and an ear piece web connected to the upper flange and the lower flange, the lower flange is connected to the first cross plate by bolts, and the upper flange is used for installing airborne equipment.

[0011] In at least one embodiment of the present application, a horizontal positioning plate and a vertical positioning plate are provided on the fixed plate, and in the connection area between the first horizontal plate and the first vertical plate, a box-type positioning structure is formed by one horizontal positioning plate and three vertical positioning plates.

[0012] In at least one embodiment of the present application, the fixing plate is provided with a plurality of vertical ribs, namely, a first vertical rib, a second vertical rib, a third vertical rib, a fourth vertical rib, a fifth vertical rib, a sixth vertical rib, and a seventh vertical rib, wherein:

[0013] The first vertical rib, the second vertical rib and the third vertical rib are arranged at positions close to the outer edge of the first vertical plate, and the arrangement direction of the vertical ribs is perpendicular to the outer edge of the first vertical plate;

[0014] The fourth vertical rib, the fifth vertical rib, the sixth vertical rib, and the seventh vertical rib are arranged in a connection area between the first horizontal plate and the first vertical plate.

[0015] In at least one embodiment of the present application, a first opening is formed on the first vertical plate, and a first hole flange is provided on the first opening.

[0016] In at least one embodiment of the present application, the first opening is elliptical.

[0017] In at least one embodiment of the present application, a first plate flange and a second plate flange are respectively provided on two opposite sides of the first vertical plate.

[0018] In at least one embodiment of the present application, the fixed beam includes a first fixed beam segment and a second fixed beam segment, and a predetermined inclination angle is provided between the first fixed beam segment and the second fixed beam segment.

[0019] In at least one embodiment of the present application, a second opening, a third opening, and a fourth opening are sequentially opened on the first fixed beam section, the second opening is provided with a second hole flange, the third opening is provided with a third hole flange, and the fourth opening is provided with a fourth hole flange.

[0020] In at least one embodiment of the present application, the second opening and the fourth opening are elliptical, and the third opening is circular.

[0021] In at least one embodiment of the present application, a plurality of reinforcing ribs are provided on the first fixed beam section, namely, a first reinforcing rib, a second reinforcing rib, a third reinforcing rib, and a fourth reinforcing rib, wherein the first reinforcing rib, the second reinforcing rib, the third reinforcing rib, and the fourth reinforcing rib are respectively spaced apart from the second opening, the third opening, and the fourth opening.

[0022] In at least one embodiment of the present application, the crossbeams include four, namely a first crossbeam, a second crossbeam, a third crossbeam, and a fourth crossbeam. The lengths of the first crossbeam and the fourth crossbeam are equal, and the lengths of the second crossbeam and the third crossbeam are equal.

[0023] In at least one embodiment of the present application, the ear piece includes two ear pieces, namely a first ear piece and a second ear piece.

[0024] In at least one embodiment of the present application, the weight and fixed frequency requirements of different airborne equipment are adapted by changing the sizes of the fixing plate, the fixing beam, the cross beam, the vertical ribs and / or the reinforcing ribs.

[0025] The invention has at least the following beneficial technical effects:

[0026] The heavy-weight airborne equipment installation structure resistant to fixed-frequency vibration of the present application can well meet the operation requirements of heavy-weight airborne equipment and has the ability to meet the requirements of narrow-band random vibration environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of an installation structure of a heavy-weight airborne device resistant to fixed-frequency vibration according to an embodiment of the present application;

[0028] Figure 2 This is a schematic diagram of an angle of a fixing plate according to an embodiment of the present application;

[0029] Figure 3 This is a schematic diagram of a fixing plate according to an embodiment of the present application from another angle;

[0030] Figure 4 This is a schematic diagram of an angle of a fixed beam in one embodiment of the present application;

[0031] Figure 5 This is a schematic diagram of a fixed beam in another angle according to an embodiment of the present application;

[0032] Figure 6 is a schematic diagram of the arrangement of the crossbeam and the lugs according to one embodiment of the present application;

[0033] Figure 7 is a schematic diagram of a beam according to an embodiment of the present application;

[0034] Figure 8 is a schematic diagram of an ear piece according to an embodiment of the present application;

[0035] Fig. 9 This is a schematic diagram of an assembly angle of an airborne device according to an embodiment of the present application;

[0036] Fig.10 This is a schematic diagram of another assembly angle of the airborne equipment of an embodiment of the present application.

[0037] in:

[0038] 1-fixed plate; 2-fixed beam; 3-first horizontal beam; 4-second horizontal beam; 5-third horizontal beam; 6-fourth horizontal beam; 7-first ear piece; 8-second ear piece; 9-first horizontal plate; 10-positioning horizontal plate; 11-positioning vertical plate; 12-first vertical plate; 13-first vertical rib; 14-second vertical rib; 15-third vertical rib; 16-fourth vertical rib; 17-fifth vertical rib; 18-sixth vertical rib 19-seventh vertical rib; 20-first Hole flange; 21-first plate flange; 22-second plate flange; 23-second horizontal plate; 24-second vertical plate; 25-first stiffener; 26-second stiffener; 27-third stiffener; 28-fourth stiffener; 29-second hole flange; 30-third hole flange; 31-fourth hole flange; 32-upper edge plate; 33-lower edge plate; 34-crossbeam web; 35-upper flange; 36-ear web; 37-lower flange. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical scheme and advantages of the implementation of this application clearer, the technical scheme in the embodiment of this application will be described in more detail below in conjunction with the drawings in the embodiment of this application. In the drawings, the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The described embodiments are part of the embodiments of this application, not all of them. The embodiments described below with reference to the drawings are exemplary and are intended to be used to explain this application, and should not be construed as limitations on this application. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. The embodiments of this application are described in detail below in conjunction with the drawings.

[0040] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present application.

[0041] The following is combined with Figures 1 to 10 This application is described in further detail.

[0042] The present application provides a heavy-weight airborne equipment installation structure resistant to fixed-frequency vibration, comprising: a fixing plate 1, a fixing beam 2, a cross beam and ear pieces.

[0043] like Figure 1As shown, the fixing plate 1, the fixing beam 2, a plurality of cross beams, and a plurality of lugs are assembled together. The fixing plate 1 and the fixing beam 2 are fixed to the fuselage structure of the aircraft by bolts, and the cross beams and lugs are fixed to the fixing plate 1 and the fixing beam 2 by bolts; the upper part of the cross beams and the lugs is used for the installation of heavy-weight airborne equipment.

[0044] The fixing plate 1 includes an integrally formed first transverse plate 9 and a first vertical plate 12, the first vertical plate 12 has an outer edge adapted to the shape of the machine body structure, and the outer edge of the first vertical plate 12 is connected to the machine body structure by bolts; the fixing beam 2 includes an integrally formed second transverse plate 23 and a second vertical plate 24, the second vertical plate 24 is connected to the machine body structure by bolts; the cross beam includes an upper edge plate 32, a lower edge plate 33, and a cross beam web 34 connected to the upper edge plate 32 and the lower edge plate 33, one end of the lower edge plate 33 is connected to the first The first and second cross plates 23 are connected to the first cross plate 9, and the other end is connected to the second cross plate 23 by bolts. The upper edge plate 32 is used to install airborne equipment. A mounting hole can be opened on the upper edge plate 32, and the airborne equipment can be installed with fasteners; the ear piece includes an upper flange 35, a lower flange 37, and an ear piece web 36 connected to the upper flange 35 and the lower flange 37. The lower flange 37 is connected to the first cross plate 9 by bolts. The upper flange 35 is used to install airborne equipment. A mounting hole can be opened on the upper flange 35, and the airborne equipment can be installed with fasteners. The present application is connected to the body structure by a fixed plate 1 and a fixed beam 2. The structural form and size of the fixed plate 1 and the fixed beam 2 are selected according to actual conditions to ensure that within the range of changes in the installation state of the airborne equipment, it has a certain mechanical change space bearing capacity. The structural form and size of the cross beam and the ear piece are selected according to actual conditions to ensure that a certain support can be provided to the airborne equipment under a mechanical environment.

[0045] In a preferred embodiment of the present application, Figure 2-Figure 3 As shown, a positioning transverse plate 10 and a positioning vertical plate 11 are provided on the fixed plate 1 , and in the connection area between the first transverse plate 9 and the first vertical plate 12 , a box-type positioning structure is formed by one positioning transverse plate 10 and three positioning vertical plates 11 .

[0046] In this embodiment, a plurality of vertical ribs are provided on the fixed plate 1, namely, a first vertical rib 13, a second vertical rib 14, a third vertical rib 15, a fourth vertical rib 16, a fifth vertical rib 17, a sixth vertical rib 18, and a seventh vertical rib 19. Among them, the first vertical rib 13, the second vertical rib 14, and the third vertical rib 15 are arranged at a position close to the outer edge of the first vertical plate 12, and the vertical rib arrangement direction is perpendicular to the outer edge of the first vertical plate 12; the fourth vertical rib 16, the fifth vertical rib 17, the sixth vertical rib 18, and the seventh vertical rib 19 are arranged in the connecting area between the first horizontal plate 9 and the first vertical plate 12.

[0047] In this embodiment, a first opening is formed on the first vertical plate 12, and a first opening flange 20 is formed on the first opening. The first opening is elliptical.

[0048] In this embodiment, in order to adapt to the installation space, the side of the first vertical plate 12 is designed as a bent structure. In order to improve the structural rigidity, a first plate flange 21 and a second plate flange 22 are respectively provided on two opposite sides of the first vertical plate 12 .

[0049] In a preferred embodiment of the present application, Figure 4-Figure 5 As shown, the fixed beam 2 includes a first fixed beam section and a second fixed beam section. There is a predetermined inclination angle between the first fixed beam section and the second fixed beam section. The predetermined inclination angle is designed according to the body structure of the installation location.

[0050] In this embodiment, the first fixed beam section is provided with a second opening, a third opening, and a fourth opening in sequence, the second opening is provided with a second hole flange 29, the third opening is provided with a third hole flange 30, and the fourth opening is provided with a fourth hole flange 31. The second opening and the fourth opening are elliptical, and the third opening is circular. By reasonably selecting the structural form and size of the openings on the first fixed beam section, not only can the weight of the structure be reduced, but also it can be ensured that a certain support can be provided to the protruding parts of the airborne equipment under a mechanical environment.

[0051] In this embodiment, a plurality of reinforcing ribs are provided on the first fixed beam section, namely, the first reinforcing rib 25, the second reinforcing rib 26, the third reinforcing rib 27, and the fourth reinforcing rib 28, wherein the first reinforcing rib 25, the second reinforcing rib 26, the third reinforcing rib 27, and the fourth reinforcing rib 28 are spaced apart from the second opening, the third opening, and the fourth opening, respectively.

[0052] In the preferred embodiment of the present application, in order to facilitate the installation of the airborne equipment, the upper edge plate 32 of the cross beam is larger than the lower edge plate 33. The number of cross beams can be selected according to actual conditions, such as Figure 6-Figure 8 As shown, there are four cross beams, namely, a first cross beam 3, a second cross beam 4, a third cross beam 5, and a fourth cross beam 6. The lengths of the first cross beam 3 and the fourth cross beam 6 are equal, and the lengths of the second cross beam 4 and the third cross beam 5 are equal. In this embodiment, there are two ear pieces, namely, a first ear piece 7 and a second ear piece 8, which are installed near the first cross beam 3 and the fourth cross beam 6, respectively.

[0053] The heavy-weight airborne equipment installation structure resistant to fixed-frequency vibration of the present application is used to install the airborne equipment through the upper edge plate 32 of the crossbeam and the upper flange 25 of the ear piece, and the installation width requirement can be met by changing the span of the fixed plate 1 and the fixed beam 2. By changing the dimensions of the fixed plate 1, the fixed beam 2, the crossbeam, the vertical ribs and / or the reinforcing ribs, such as the length, thickness, width, etc., it is possible to accurately and effectively avoid the fixed frequency and adapt to the installation requirements of airborne equipment of different weights, and it is possible to adapt to the weight and fixed-frequency requirements of different airborne equipment. It is also possible to further achieve resistance to heavy-weight and fixed-frequency vibration by changing the end constraints of each part.

[0054] The heavy-weight airborne equipment installation structure resistant to fixed-frequency vibration of the present application has the first plate flange 21 and the second plate flange 22 on the fixed plate 1, and the vertical ribs on the fixed beam 2 to ensure rigidity, and the upper flange 35 on the ear piece ensures the stability and strength of the airborne equipment installation. The upper flange 35 only has stud holes for connection to avoid the incoordination between the airborne equipment and the upper flange, and reduces the excess weight on the flange. In addition, the design is also aimed at the ability of the airborne equipment to withstand mechanical environments when extended. The lower end of the airborne equipment installation is fixed again through a circle of hole flanges. The installation form of the upper and lower circles increases the stability and torque resistance of the product, and can truly reflect the force transmission relationship of the on-board installation. According to the airborne equipment with different shapes of extension, the extended shape, flange thickness, width, and the form and thickness of the box-type positioning structure can be changed to effectively realize the design requirements.

[0055] When using the heavy-weight airborne equipment installation structure resistant to fixed-frequency vibration of the present application, the implementer first connects the fixing plate 1 and the fixing beam 2 to the aircraft body structure by bolts, and then connects the cross beam and the ear piece to the fixing plate 1 and the fixing beam 2 before use. The fixing plate 1, the fixing beam 2, the cross beam and the ear piece form an overall structure, and the connection structure is divided into components. The manufacturing process is simple and easy to install.

[0056] The heavy-weight airborne equipment installation structure resistant to fixed-frequency vibration of the present application is used for mounting aircraft airborne equipment and needs to avoid fixed frequency support. It can adapt to propeller narrowband resistance and self-contained fixed frequency, while superimposing random vibration environment. It can support airborne equipment in a mechanical environment, and can simultaneously meet the different requirements of the mechanical environment when the state of the airborne equipment changes. It can effectively resist vibration loads and meet the fixed-frequency operation function of the equipment. The present application can avoid the installation form of conventional brackets that are difficult to avoid or cannot avoid the fixed-frequency requirements due to space influences, and cannot meet the technical requirements of the mechanical environment, especially the structural connection installation assessment with self-contained power and vibration.

[0057] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A heavy-weight airborne equipment installation structure resistant to fixed-frequency vibration, characterized in that: include: A fixing plate (1), the fixing plate (1) comprising a first transverse plate (9) and a first vertical plate (12), the first vertical plate (12) having an outer edge adapted to the shape of the machine body structure, the outer edge of the first vertical plate (12) being connected to the machine body structure via bolts; A fixed beam (2), the fixed beam (2) comprising a second transverse plate (23) and a second vertical plate (24), the second vertical plate (24) being connected to the machine body structure via bolts; A cross beam, the cross beam comprising an upper edge plate (32), a lower edge plate (33), and a cross beam web (34) connected to the upper edge plate (32) and the lower edge plate (33), one end of the lower edge plate (33) being connected to the first cross plate (9) by bolts, and the other end being connected to the second cross plate (23) by bolts, and the upper edge plate (32) being used for mounting airborne equipment; The ear piece includes an upper flange (35), a lower flange (37), and an ear piece web (36) connected to the upper flange (35) and the lower flange (37); the lower flange (37) is connected to the first cross plate (9) by bolts; and the upper flange (35) is used for installing airborne equipment.

2. The heavy-weight airborne equipment installation structure resistant to fixed-frequency vibration according to claim 1 is characterized in that: The fixed plate (1) is provided with a positioning transverse plate (10) and a positioning vertical plate (11), and in the connection area between the first transverse plate (9) and the first vertical plate (12), a box-type positioning structure is formed by one positioning transverse plate (10) and three positioning vertical plates (11).

3. The heavy-weight airborne equipment installation structure resistant to fixed-frequency vibration according to claim 2 is characterized in that: The fixing plate (1) is provided with a plurality of vertical ribs, namely, a first vertical rib (13), a second vertical rib (14), a third vertical rib (15), a fourth vertical rib (16), a fifth vertical rib (17), a sixth vertical rib (18), and a seventh vertical rib (19), wherein: The first vertical rib (13), the second vertical rib (14), and the third vertical rib (15) are arranged at positions close to the outer edge of the first vertical plate (12), and the vertical rib arrangement direction is perpendicular to the outer edge of the first vertical plate (12); The fourth vertical rib (16), the fifth vertical rib (17), the sixth vertical rib (18), and the seventh vertical rib (19) are arranged in the connection area between the first transverse plate (9) and the first vertical plate (12).

4. The heavy-weight airborne equipment installation structure resistant to fixed-frequency vibration according to claim 3 is characterized in that: The first vertical plate (12) is provided with a first opening, and the first opening is provided with a first hole flange (20).

5. The heavy-weight airborne equipment installation structure resistant to fixed-frequency vibration according to claim 4 is characterized in that: The first opening is oval in shape.

6. The heavy-weight airborne equipment installation structure resistant to fixed-frequency vibration according to claim 5 is characterized in that: The first vertical plate (12) is provided with a first plate flange (21) and a second plate flange (22) on opposite sides thereof.

7. The heavy-weight airborne equipment installation structure resistant to fixed-frequency vibration according to claim 6 is characterized in that: The fixed beam (2) comprises a first fixed beam section and a second fixed beam section, and a predetermined inclination angle is formed between the first fixed beam section and the second fixed beam section.

8. The heavy-weight airborne equipment installation structure resistant to fixed-frequency vibration according to claim 7 is characterized in that: The first fixed beam section is provided with a second opening, a third opening and a fourth opening in sequence; the second opening is provided with a second hole flange (29); the third opening is provided with a third hole flange (30); and the fourth opening is provided with a fourth hole flange (31).

9. The heavy-weight airborne equipment installation structure resistant to fixed-frequency vibration according to claim 8, characterized in that: The second opening and the fourth opening are elliptical, and the third opening is circular.

10. The heavy-weight airborne equipment installation structure resistant to fixed-frequency vibration according to claim 9, characterized in that: The first fixed beam section is provided with a plurality of reinforcing ribs, namely a first reinforcing rib (25), a second reinforcing rib (26), a third reinforcing rib (27), and a fourth reinforcing rib (28), wherein the first reinforcing rib (25), the second reinforcing rib (26), the third reinforcing rib (27), and the fourth reinforcing rib (28) are arranged at intervals from the second opening, the third opening, and the fourth opening, respectively.

11. The heavy-weight airborne equipment installation structure resistant to fixed-frequency vibration according to claim 10, characterized in that: The cross beams include four, namely a first cross beam (3), a second cross beam (4), a third cross beam (5), and a fourth cross beam (6); the first cross beam (3) and the fourth cross beam (6) are of equal length, and the second cross beam (4) and the third cross beam (5) are of equal length.

12. The heavy-weight airborne equipment installation structure resistant to fixed-frequency vibration according to claim 11, characterized in that: The ear pieces include two, namely a first ear piece (7) and a second ear piece (8).

13. The heavy-weight airborne equipment installation structure resistant to fixed-frequency vibration according to claim 12, characterized in that: By changing the dimensions of the fixing plate (1), the fixing beam (2), the cross beam, the vertical ribs and / or the reinforcing ribs, the weight and fixed frequency requirements of different airborne equipment can be adapted.

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