A large-weight airborne equipment mounting structure resistant to constant frequency vibration

Abstract

The application belongs to the technical field of narrow-band superimposed random vibration, and particularly relates to a large-weight airborne equipment mounting structure resistant to fixed-frequency vibration. The structure comprises: a fixed plate comprising a first horizontal plate and a first vertical plate, the first vertical plate having an outer edge matched with the shape of a machine body structure, the outer edge of the first vertical plate being connected with the machine body structure through bolts; a fixed beam comprising a second horizontal plate and a second vertical plate, the second vertical plate being connected with the machine body structure through bolts; a cross beam comprising an upper edge plate, a lower edge plate and a cross beam web plate connected with the upper edge plate and the lower edge plate, one end of the lower edge plate being connected with the first horizontal plate through bolts, the other end being connected with the second horizontal plate through bolts, the upper edge plate being used for mounting the airborne equipment; and an ear piece comprising an upper turning edge, a lower turning edge and an ear piece web plate connected with the upper turning edge and the lower turning edge, the lower turning edge being connected with the first horizontal plate through bolts, the upper turning edge being used for mounting the airborne equipment. The application can well meet the operation requirements of large-weight airborne equipment and meet the requirements of narrow-band superimposed random vibration environment.

Description

Technical Field

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

[0002] Currently, there are many onboard equipment on aircraft with power equipment that has a fixed operating frequency. However, due to the different installation locations and onboard space 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 heavy 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 deficiencies of the prior art. Summary of the Invention

[0004] The purpose of the present application is to provide a heavy-weight airborne equipment mounting 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 via 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 crossbeam, the crossbeam comprising an upper edge plate, a lower edge plate, and a crossbeam web connected to the upper edge plate and the lower edge plate, one end of the lower edge plate being connected to the first crossbeam by bolts, and the other end being connected to the second crossbeam by bolts, the upper edge plate being used to mount 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 to install 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. 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 near 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 transverse 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 formed 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 provided on the first fixed beam section, a second hole flange is provided on the second opening, a third hole flange is provided on the third opening, and a fourth hole flange is provided on the fourth opening.

[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 pieces include two, namely a first ear piece and a second ear piece.

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

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

[0026] The heavy-weight airborne equipment mounting structure of the present application, which is resistant to fixed-frequency vibration, 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 the installation structure of a heavy-weight airborne device resistant to fixed-frequency vibration according to one 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 according to an embodiment of the present application;

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

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

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

[0034] Figure 8 Schematic diagram of an ear piece according to one embodiment of the present application;

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

[0036] Figure 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 reinforcement rib; 26-second reinforcement rib; 27-third reinforcement rib; 28-fourth reinforcement rib; 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 solutions and advantages of the implementation of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below in conjunction with the drawings in the embodiments 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 the embodiments. 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 understood 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 this application, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this 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. Therefore, it should not be understood as limiting the scope of protection of this 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 mounting structure resistant to fixed-frequency vibration, comprising: a fixing plate 1, a fixing beam 2, a cross beam, and lugs.

[0043] like Figure 1As shown, a fixing plate 1, a fixing beam 2, multiple crossbeams, and multiple tabs are assembled together. The fixing plate 1 and fixing beam 2 are bolted to the aircraft's fuselage structure, while the crossbeams and tabs are also bolted to the fixing plate 1 and fixing beam 2. Heavy-duty airborne equipment is mounted above the crossbeams and tabs.

[0044] Among them, the fixed 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 body structure, and the outer edge of the first vertical plate 12 is connected to the body structure by bolts; the fixed 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 body structure by bolts; the crossbeam includes an upper edge plate 32, a lower edge plate 33, and a crossbeam web 34 connected to the upper edge plate 32 and the lower edge plate 33, and one end of the lower edge plate 33 is connected to the first The first end is connected to the horizontal plate 9, and the other end is connected to the second horizontal 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 horizontal 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. 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 the first vertical rib 13, the second vertical rib 14, the third vertical rib 15, the fourth vertical rib 16, the fifth vertical rib 17, the sixth vertical rib 18, and the seventh vertical rib 19. Among them, the first vertical rib 13, the second vertical rib 14, and the third vertical rib 15 are arranged near 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 provided on the first opening. The first opening is oval in shape.

[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, and 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 opening flange 29, the third opening is provided with a third opening flange 30, and the fourth opening is provided with a fourth opening flange 31. The second and fourth openings are elliptical, while the third opening is circular. By properly selecting the structural form and size of the openings in the first fixed beam section, not only can the weight of the structure be reduced, but also certain support can be provided to the protruding parts of the onboard equipment under mechanical conditions.

[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 airborne equipment, the upper edge plate 32 of the crossbeam is larger than the lower edge plate 33. The number of crossbeams can be selected according to actual conditions, such as Figure 6-Figure 8 As shown, there are four crossbeams, namely, a first crossbeam 3, a second crossbeam 4, a third crossbeam 5, and a fourth crossbeam 6. The first crossbeam 3 and the fourth crossbeam 6 are of equal length, and the second crossbeam 4 and the third crossbeam 5 are of equal length. In this embodiment, there are two lugs, namely, a first lug 7 and a second lug 8, which are installed near the first crossbeam 3 and the fourth crossbeam 6, respectively.

[0053] The heavy-weight airborne equipment mounting structure of the present application, which is resistant to fixed-frequency vibration, utilizes the upper edge plate 32 of the crossbeam and the upper flange 25 of the lug to mount the airborne equipment. The installation width requirement can be met by changing the span of the fixed plate 1 and the fixed beam 2. By varying the dimensions of the fixed plate 1, fixed beam 2, crossbeam, vertical ribs, and / or reinforcing ribs, such as length, thickness, and width, it is possible to accurately and effectively avoid fixed frequency and adapt to the installation requirements of airborne equipment of varying weights. This allows for adapting to the weight and fixed-frequency requirements of different airborne equipment, and further allows for the resistance to heavy-weight, fixed-frequency vibration to be achieved by modifying the end constraints of each component.

[0054] The heavy-weight airborne equipment installation structure of the present application, which is resistant to fixed-frequency vibration, has a first plate flange 21 and a second plate flange 22 on the fixed plate 1, and vertical ribs on the fixed beam 2 to ensure rigidity. 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, which avoids the inconsistency between the airborne equipment and the upper flange and reduces the excess weight on the flange. In addition, the design is also based on 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 holes and 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 installation on the aircraft. According to the different shapes of the airborne equipment, the extended shape, flange thickness, width, and the form and thickness of the box-type positioning structure can be changed to effectively meet the design requirements.

[0055] When using the heavy-weight airborne equipment installation structure that is 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's body structure through bolts, and then connects the crossbeam 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 crossbeam 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 mounting structure resistant to fixed-frequency vibration of the present application is used for mounting aircraft airborne equipment and needs to avoid fixed-frequency fixed support. It can adapt to propeller narrowband resistance and self-contained fixed frequency, while superimposing random vibration environments. 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-powered vibration.

[0057] 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 heavy-weight airborne equipment mounting structure resistant to fixed-frequency vibration, characterized in that: include: A fixed plate (1), the fixed 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 crossbeam, the crossbeam comprising an upper edge plate (32), a lower edge plate (33), and a crossbeam 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 transverse plate (9) by bolts; and the upper flange (35) is used for installing airborne equipment.

2. The heavy-weight airborne equipment mounting structure resistant to fixed-frequency vibration according to claim 1 is characterized in that: A positioning transverse plate (10) and a positioning vertical plate (11) are provided on the fixed plate (1); 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 mounting structure resistant to fixed-frequency vibration according to claim 2, 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 near 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 mounting structure resistant to fixed-frequency vibration according to claim 3 is characterized in that: A first opening is provided on the first vertical plate (12), and a first hole flange (20) is provided on the first opening.

5. The heavy-weight airborne equipment mounting 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 mounting structure resistant to fixed-frequency vibration according to claim 5, characterized in that: A first plate flange (21) and a second plate flange (22) are respectively provided on two opposite sides of the first vertical plate (12).

7. The heavy-weight airborne equipment mounting structure resistant to fixed-frequency vibration according to claim 6, 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 mounting structure resistant to fixed-frequency vibration according to claim 7, 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 mounting 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 mounting 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 spaced apart from the second opening, the third opening, and the fourth opening, respectively.

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

12. The heavy-weight airborne equipment mounting 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 mounting 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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