A new mounting joint combined with a hanging function

Abstract

The application discloses a novel mounting joint combined with a hanging function, which comprises a plurality of internal mounting interfaces, an ear and a main body frame; the plurality of internal mounting interfaces are arranged at one end of the main body frame; and the ear is arranged at the top end of the main body frame. The mounting joint of the application not only fixes the engine to the aircraft and transmits various loads of the engine to the components of the aircraft, but also can realize integrated design with the hanging, plays the role of the hanging lifting point in the process of airplane hoisting and transportation, compared with the traditional additional design of detachable hanging, the application makes the field work simple, the component list more concise, and meanwhile, a certain weight reduction effect can be achieved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of engines, and particularly relates to a novel mounting joint combined with a hanging function. BACKGROUND

[0002] The mounting joint is an important component of an aero-engine, and transmits various external loads of the engine to the airplane. The general mounting joint design method only considers the stiffness and strength, and can withstand the load. The position is generally designed on both sides of the horizontal center line of the main load-bearing casing (frame) to eliminate the bending of the fuselage caused by the deviation of the thrust load from the horizontal center line.

[0003] Generally, the mounting joint requires a hanging point to cooperate during the transportation, installation and disassembly of the aero-engine, so the engine is generally provided with a non-universal detachable hanging. The hanging of each type is different, and the hanging installation position is also different, which greatly increases the difficulty of operation of the field workers during the transportation, installation and disassembly. The separate provision of the hanging also makes the design and production more complicated. In addition, since the hanging is a load-bearing part, it needs to be checked for stiffness, strength and even fire resistance, which is a complicated process. Moreover, the additional components make the total weight of the engine heavier. SUMMARY

[0004] In view of the above problems, the present application discloses a novel mounting joint combined with a hanging function, comprising: a plurality of internal mounting interfaces, a lifting lug and a main body frame.

[0005] The plurality of internal mounting interfaces are arranged at one end of the main body frame.

[0006] The lifting lug is arranged at the top end of the main body frame.

[0007] Further, the cross section of the internal mounting interface is circular.

[0008] The diameters of the plurality of internal mounting interfaces are equal or unequal.

[0009] Further, the centers of the plurality of internal mounting interfaces are distributed at equal intervals and located on the same circular arc.

[0010] Further, the main body frame is triangular.

[0011] Further, the main body frame is provided with a through slot at one end.

[0012] The through slot comprises a first arc-shaped side wall and a second arc-shaped side wall.

[0013] The first arc-shaped side wall and the second arc-shaped side wall are hollow in the middle.

[0014] A plurality of internal mounting interfaces are arranged on the first arc-shaped side wall and the second arc-shaped side wall.

[0015] Further, the external mounting interface is further included.

[0016] The external mounting interface is fixedly mounted on one side of the main frame.

[0017] Further, the external mounting interface is in a cylindrical shape.

[0018] Further, the external mounting interface is further included.

[0019] The recess is arranged in the middle region of the main frame.

[0020] Further, the recess is in a rounded triangular shape in horizontal section.

[0021] Further, the main frame is rounded.

[0022] Compared with the prior art, the mounting joint of the present application has at least the following advantages: the mounting joint of the present application not only fixes the engine to the aircraft and transmits various loads of the engine to the components of the aircraft, but also realizes integrated design with the sling, plays the role of sling lifting point during aircraft hoisting and transportation, and compared with the traditional additional designed detachable sling, the present application makes the field work simple, the component list simple, and achieves the effect of weight reduction.

[0023] Other features and advantages of the present application will be set forth in the following description, and in part will become apparent to those skilled in the art from the description, or can be learned by practice of the present application. The objects and other advantages of the present application will be realized and attained by the structure particularly pointed out in the written description and claims. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0025] Figure 1 The structure diagram of the new mounting joint combined with the sling function according to the embodiment of the present application is shown.

[0026] The drawings show that: 1, internal mounting interface; 2, external mounting interface; 3, lifting lug; 4, recess; 5, main frame; 51, first arc-shaped side wall; 52, second arc-shaped side wall. DETAILED DESCRIPTION

[0027] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0028] Figure 1 A structural schematic diagram of a new mounting joint combined with a hanging function according to an embodiment of the present application is shown. As shown in the figure, Figure 1 a new mounting joint combined with a hanging function according to the present application includes a plurality of internal mounting interfaces 1, an ear 3 and a main frame 5.

[0029] The plurality of internal mounting interfaces 1 are arranged at the bottom end of the main frame 5.

[0030] The ear 3 is arranged at the top end of the main frame 5.

[0031] The internal mounting interface 1 is used to connect with an engine force-bearing casing, so as to ensure that the supporting force of the engine can be effectively transmitted to the mounting joint.

[0032] The ear 3 is used for lifting.

[0033] In some embodiments, the cross section of the internal mounting interface 1 is circular.

[0034] The diameters of the plurality of internal mounting interfaces 1 are equal or unequal. In actual use, the diameter of the internal mounting interface 1 can be appropriately adjusted according to the actual situation. For example, the internal mounting interface 1 is provided with 7, wherein the diameter of the middle one is greater than that of the other internal mounting interfaces 1. The diameters of the plurality of internal mounting interfaces 1 are different, which can match different models of engines and have a wide range of applications.

[0035] In some embodiments, the centers of the plurality of internal mounting interfaces 1 are distributed at equal intervals and located on the same circular arc. The plurality of internal mounting interfaces 1 are connected with the engine force-bearing casing, so as to ensure that the supporting force of the engine can be effectively transmitted to the mounting joint.

[0036] In some embodiments, the main frame 5 is triangular. The triangular main frame 5 can provide stable support.

[0037] In some embodiments, the oblique side of the main frame 5 is provided with a through slot. When installing, the flange plate of the engine needs to be inserted into the through slot of the main frame 5 for installation.

[0038] The through slot includes a first arc-shaped side wall 51 and a second arc-shaped side wall 52.

[0039] The first arc-shaped side wall 51 and the second arc-shaped side wall 52 are hollow in the middle;

[0040] A plurality of internal mounting interfaces 1 are arranged on the first arc-shaped side wall 51 and the second arc-shaped side wall 52. The plurality of internal mounting interfaces 1 on the first arc-shaped side wall 51 and the plurality of internal mounting interfaces 1 on the second arc-shaped side wall 52 are one-to-one corresponding, and the corresponding internal mounting interfaces 1 are of the same diameter.

[0041] The flange plate of the engine is moved into the through slot on the main frame 5, and the engine flange plate and the mounting section are connected together through the plurality of internal mounting interfaces 1 on the first arc-shaped side wall 51 and the second arc-shaped side wall 52 and bolts.

[0042] In some embodiments, the new mounting section combined with the hanging function further comprises: an external mounting interface 2;

[0043] The external mounting interface 2 is fixedly installed on one side of the main frame 5.

[0044] The external mounting interface 2 is used for docking with the aircraft cabin. The external mounting interface 2 is designed as a shaft-holding structure, which has the advantages of simple design, easy assembly, low cost, uniform stress dispersion, good processability, simple structure, easy factory processing and control of tolerance range, compliance with the replaceability of general engine mounting section design, and compliance with the installation method requirements of general aircraft cabin.

[0045] In some embodiments, the external mounting interface 2 is in a cylindrical shape.

[0046] In some embodiments, the new mounting section combined with the hanging function further comprises: a groove 4;

[0047] The groove 4 is arranged in the middle region of the main frame 5.

[0048] In some embodiments, the horizontal cross section of the groove 4 is in a rounded triangle shape.

[0049] The groove 4 can reduce the weight of the mounting section on one hand, and the rounded triangle shape can provide stable support on the other hand.

[0050] In some embodiments, the main frame 5 is subjected to rounding treatment. The rounding treatment can reduce the weight of the mounting section on one hand, and can also reduce the problem of stress concentration on the other hand.

[0051] Based on the above-mentioned new mounting section combined with the hanging function, the embodiment proposes a design method of the new mounting section combined with the hanging function, comprising:

[0052] As Figure 1As shown, according to the relationship between the connecting position of the mounting lug and the engine, the internal mounting interface 1 of the mounting lug is designed, and seven mounting holes are designed in the mounting lug, which are connected with the engine force-bearing casing in equidistant circular arc distribution, so as to ensure that the supporting force of the engine can be effectively transmitted to the mounting lug.

[0053] Since the mounting lug is a connecting force transmission structure of the engine and the cabin structure of the aircraft, the direct connection form of the mounting lug with the cabin structure of the aircraft also needs to be considered, and the external mounting interface 2 of the mounting lug is designed through the relative position relationship between the mounting lug and the cabin of the aircraft, as shown in Figure 1 The shaft holding structure is designed to be connected with the cabin of the aircraft.

[0054] In order to combine the function of the hanger, as shown in Figure 1 A new hanger ear 3 is designed above the original mounting lug (schematic) to replace the function of the hanger. The mounting lug and the hanger are both force-bearing members, so the rigidity and strength requirements can be easily met. This integrated design method greatly simplifies the design and field work.

[0055] Under the condition of meeting the rigidity and strength requirements of the mounting lug, the mounting lug is subjected to a groove digging step, as shown in Figure 1 Grooves 4 are dug in the position of the mounting lug structure with thick thickness and strong strength, so as to reduce the weight of the mounting lug and meet the weight index in the design index.

[0056] Under the consideration of aesthetics and design standards, as shown in Figure 1 The edges of the corners of the mounting lug are chamfered, which can also reduce the weight of the mounting lug and reduce the problem of stress concentration.

[0057] The mounting lug design method of the present application not only considers the bearing and load transmission of the engine, but also considers the integration of its function, the optimization of the overall weight of the engine, and the optimization of the overall structure of the engine. Generally, in the field, the aircraft engine needs a hanger point to cooperate during transportation, installation and disassembly, so the engine is usually equipped with a non-universal detachable hanger. Each type of hanger is different, and the hanger installation position is also different, which greatly increases the difficulty of operation of the field workers during transportation, installation and disassembly. The separate provision of the hanger also makes the design and production more complicated. The present application ingeniously solves this problem. Since the mounting lug is the main support and force-bearing member of the engine, its rigidity and strength can meet the conditions of the hanger. The integrated hanger ear is designed above the mounting lug, thereby reducing the work of disassembling the separate hanger in the field. Through a series of finite element calculations, such integrated design can effectively reduce the overall weight of the engine.

[0058] In the description of the application, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the purpose of facilitating the description of the application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the application.

[0059] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0060] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0061] In the present application, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or it can only mean that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or it can only mean that the horizontal height of the first feature is less than that of the second feature.

[0062] In the description of the application, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the application. The illustrative description of the above terms in the application does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any suitable manner in any one or more embodiments or examples. In addition, different embodiments or examples described in the application and the features of different embodiments or examples can be combined by those skilled in the art without contradiction, if possible.

[0063] Although the application is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the application.

Claims

1. A novel installation section combining hanging function, characterized in that, include: Multiple internal mounting interfaces (1), lifting lugs (3) and main frame (5); Multiple internal mounting interfaces (1) are provided at one end of the main frame (5); The lug (3) is located at the top of the main frame (5); The internal mounting interface (1) has a circular cross-section; The diameters of the multiple internal mounting interfaces (1) are equal or unequal; The centers of the multiple internal mounting interfaces (1) are distributed at equal intervals and are located on the same arc.

2. The novel installation section combining hanging function according to claim 1, characterized in that, The main frame (5) is triangular.

3. The novel installation section combining hanging function according to claim 1, characterized in that, One end of the main frame (5) is provided with a through groove; The through groove includes a first arc-shaped sidewall (51) and a second arc-shaped sidewall (52); The space between the first arc-shaped sidewall (51) and the second arc-shaped sidewall (52) is a hollow area; Multiple internal mounting interfaces (1) are provided on both the first arc-shaped sidewall (51) and the second arc-shaped sidewall (52).

4. The novel installation section combining hanging function according to claim 1, characterized in that, Also includes: External mounting interface (2); The external mounting interface (2) is fixedly installed on one side of the main frame (5).

5. The novel installation section combining hanging function according to claim 4, characterized in that, The external mounting interface (2) is cylindrical.

6. The novel installation section combining hanging function according to claim 1, characterized in that, Also includes: Groove (4); The groove (4) is located in the middle area of ​​the main frame (5).

7. The novel installation section combining hanging function according to claim 6, characterized in that, The groove (4) has a rounded triangular horizontal cross section.

8. The novel installation section combining hanging function according to claim 1, characterized in that, The main frame (5) is rounded.

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