Hoisting type engine mounting structure

Abstract

The invention belongs to the field of engine mounting structures, and particularly relates to a hoisting type engine mounting structure. According to the structure, a thrust beam upper edge strip is arranged at the upper end of a thrust beam body and connected with a machine body structure, a first thrust beam lug is arranged on the left side of the thrust beam body, a second thrust beam lug is arranged on the right side of the thrust beam body, and a thrust pin is arranged at the lower end of the thrust beam body; the right side connector upper edge strip is connected with the machine body structure, the first right side connector lug is connected with the second thrust beam lug through the second supporting rod, and the second right side connector lug is connected with the first supporting rod. A left side connector upper edge strip is connected with a machine body structure, a first left side connector lug piece is connected with a first thrust beam lug piece through a third supporting rod, and a second left side connector lug piece is connected with a fourth supporting rod. The engine rear suspension joint is connected with the engine body structure through the rear suspension joint upper edge strip; the engine is hoisted through the thrust pin, the first supporting rod, the fourth supporting rod and the engine rear suspension connector.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of engine mounting structure, and particularly relates to a hoisting type engine mounting structure. BACKGROUND

[0002] At present, most of the aircraft engine mounting structures at home and abroad adopt the embedded type or the wing suspension type. The embedded type engine is mounted in the interior of the fuselage or the wing root, and is generally fixed by two sides of the engine, has the advantages of low aerodynamic resistance and strong anti-foreign damage capacity. The design of the aircraft engine mounting structure usually needs to adapt to the engine mounting interface arrangement. Limited by the internal space limitation of the fuselage and the limitation of the engine mounting interface arrangement, the embedded type engine mounting method often needs complex structure design to meet the load bearing and force transmission requirements of the engine, resulting in a relatively complex overall structure and great manufacturing and assembly difficulty. By optimizing the structure layout and improving the force transmission path design, the force transmission efficiency can be effectively improved, the structure weight can be reduced, and the assembly process can be simplified, so that higher engineering application value can be realized. At present, there is no such aircraft engine mounting structure design experience in China for the embedded type engine with the mounting interface arranged on the top.

[0003] Therefore, there is an urgent need for a technical solution to overcome or alleviate at least one of the above-mentioned defects of the prior art. SUMMARY

[0004] The purpose of the present application is to provide a hoisting type engine mounting structure to solve at least one problem existing in the prior art.

[0005] The technical solution of the present application is:

[0006] A hoisting type engine mounting structure, comprising:

[0007] An engine suspension thrust beam, comprising a thrust beam main body, a thrust beam upper edge strip, a first thrust beam ear piece, a second thrust beam ear piece and a thrust pin, the thrust beam upper edge strip is arranged at the upper end of the thrust beam main body, the upper edge strip is connected with the body structure, the first thrust beam ear piece is arranged at the left side of the thrust beam main body, the second thrust beam ear piece is arranged at the right side of the thrust beam main body, and the thrust pin is arranged at the lower end of the thrust beam main body;

[0008] A right side joint, comprising a first right side joint ear piece, a second right side joint ear piece and a right side joint upper edge strip, the right side joint upper edge strip is connected with the body structure, the first right side joint ear piece is connected with the second thrust beam ear piece through a second support rod, and the second right side joint ear piece is connected with a first support rod;

[0009] The left side joint includes a first left side joint ear, a second left side joint ear, and a left side joint upper edge strip, the left side joint upper edge strip is connected with the body structure, the first left side joint ear is connected with the first push beam ear through a third support rod, and the second left side joint ear is connected with a fourth support rod;

[0010] The engine rear suspension joint is connected with the body structure through a rear suspension joint upper edge strip;

[0011] The engine hoisting is realized through the push pin, the first support rod, the fourth support rod, and the engine rear suspension joint.

[0012] In at least one embodiment of the present application, the engine hoisting push beam is a web stiffened structure.

[0013] In at least one embodiment of the present application, the push beam body, the push beam upper edge strip, the first push beam ear, the second push beam ear, and the push pin are processed into an integral part by titanium alloy forging.

[0014] In at least one embodiment of the present application, the first push beam ear is connected with the third support rod through a bolt after a bushing is pressed and fitted.

[0015] In at least one embodiment of the present application, the second push beam ear is connected with the second support rod through a bolt after a bushing is pressed and fitted.

[0016] In at least one embodiment of the present application, the first right side joint ear is connected with the second support rod through a bolt after a bushing and a joint bearing are pressed and fitted.

[0017] In at least one embodiment of the present application, the second right side joint ear is connected with the first support rod through a bolt after a bushing and a joint bearing are pressed and fitted.

[0018] In at least one embodiment of the present application, the first left side joint ear is connected with the third support rod through a bolt after a bushing and a joint bearing are pressed and fitted.

[0019] In at least one embodiment of the present application, the second left side joint ear is connected with the fourth support rod through a bolt after a bushing and a joint bearing are pressed and fitted.

[0020] In at least one embodiment of the present application, both ends of the first support rod, the second support rod, the third support rod, and the fourth support rod are provided with double ear joints, and a lightening groove is formed on the support rod body.

[0021] In at least one embodiment of the present application, four lightening grooves are formed on the support rod body, forming a H-shaped cross section.

[0022] In at least one embodiment of the present application, the engine rear suspension joint is connected to the engine by a bolt with a small gap fit between the bolt and the bolt hole.

[0023] In at least one embodiment of the present application, the first engine mounting joint is connected to the first strut rod after the bushing and the joint bearing are pressed.

[0024] In at least one embodiment of the present application, the second engine mounting joint is connected to the fourth strut rod after the bushing and the joint bearing are pressed.

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

[0026] The hoisting type engine mounting structure of the present application is designed on the basis of the existing embedded hoisting type engine mounting scheme to meet specific performance requirements. By optimizing the hoisting structure design, the force transmission path is simplified, the stability and reliability of the engine mounting are improved, the overall weight is reduced, and the assembly process is simplified, providing an efficient and reliable mounting method for the embedded engine. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a schematic diagram of the hoisting type engine mounting structure of an embodiment of the present application;

[0028] Figure 2 is a schematic diagram of the engine hoisting thrust beam of an embodiment of the present application;

[0029] Figure 3 is a schematic diagram of the left joint of an embodiment of the present application;

[0030] Figure 4 is a schematic diagram of the strut rod of an embodiment of the present application.

[0031] Among them:

[0032] 1 - first strut rod; 2 - second strut rod; 3 - third strut rod; 4 - fourth strut rod; 5 - left joint; 6 - right joint; 7 - engine hoisting thrust beam; 8 - engine rear suspension joint; 9 - thrust pin; 11 - first thrust beam lug; 12 - second thrust beam lug; 13 - first left joint lug; 14 - second left joint lug; 15 - left joint upper edge strip; 16 - joint bearing; 17 - lightening groove; 18 - double lug joint. DETAILED DESCRIPTION

[0033] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of this application. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application. The embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0034] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this application.

[0035] The following is in conjunction with the appendix Figures 1 to 4 This application will be described in further detail.

[0036] This application provides a hoisting engine mounting structure, such as Figure 1 As shown, it includes: engine suspension thrust beam 7, right side connector 6, left side connector 5, and engine rear suspension connector 8.

[0037] like Figure 2 As shown, the engine-mounted thrust beam 7 adopts a web-reinforced structure, including an integrated thrust beam body, a thrust beam upper edge strip 10, a first thrust beam lug 11, a second thrust beam lug 12, and a thrust pin 9. The thrust beam upper edge strip 10 is located at the upper end of the thrust beam body and is connected to the engine block structure. The first thrust beam lug 11 is located on the left side of the thrust beam body and is used to connect with the third strut 3 to transmit lateral loads. The second thrust beam lug 12 is located on the right side of the thrust beam body and is used to connect with the second strut 2 to transmit lateral loads. The thrust pin 9 is located at the lower end of the thrust beam body.

[0038] In a preferred embodiment of this application, the thrust beam body, the upper edge strip 10 of the thrust beam, the first thrust beam lug 11, the second thrust beam lug 12, and the thrust pin 9 are forged from titanium alloy into a single integral part. In this embodiment, the first thrust beam lug 11 is press-fitted with a bushing and then connected to the third support rod 3 by bolts, and the second thrust beam lug 12 is press-fitted with a bushing and then connected to the second support rod 2 by bolts.

[0039] The right side joint 6 comprises a first right side joint lug, a second right side joint lug and a right side joint upper edge strip which are integrally designed, the right side joint upper edge strip is connected with the body structure, the first right side joint lug is connected with the second thrust beam lug 12 through the second support rod 2, and the second right side joint lug is connected with the first support rod 1. The first right side joint lug is connected with the second support rod 2 through a bolt after a bushing and a joint bearing 16 are pressed, and the second right side joint lug is connected with the first support rod 1 through a bolt after a bushing and a joint bearing 16 are pressed.

[0040] The left side joint 5 adopts a similar structural design as the right side joint 6, as shown in Figure 3 The left side joint 5 comprises a first left side joint lug 13, a second left side joint lug 14 and a left side joint upper edge strip 15 which are integrally designed, the left side joint upper edge strip 15 is connected with the body structure, the first left side joint lug 13 is connected with the first thrust beam lug 11 through the third support rod 3, and the second left side joint lug 14 is connected with the fourth support rod 4. The first left side joint lug 13 is connected with the third support rod 3 through a bolt after a bushing and a joint bearing 16 are pressed, and the second left side joint lug 14 is connected with the fourth support rod 4 through a bolt after a bushing and a joint bearing 16 are pressed.

[0041] In the preferred embodiment of the present application, as shown in Figure 4 Both ends of the first support rod 1, the second support rod 2, the third support rod 3 and the fourth support rod 4 are provided with double lug joints 18, and a lightening groove 17 is formed on the support rod body. In the embodiment, four lightening grooves 17 are formed on the support rod body to form a H-shaped cross section. The double lug joints 18 of each support rod are connected with the single lug joints of the engine through bolts. In order to avoid that the first support rod 1 and the fourth support rod 4 bear the load under the engine heading load condition, a joint bearing is pressed in the engine mounting joint and the left and right engine lateral joint lugs on both sides of the support rod; at the same time, the lugs connected with the second support rod 2 and the third support rod 3 are also pressed with joint bearings to prevent the support rod from bearing the torsional deformation when the body structure is torsionally deformed.

[0042] The engine rear suspension joint 8 is connected with the body through a rear suspension joint upper edge strip; the engine rear suspension joint 8 is connected with the engine through a bolt, and a small gap fit is adopted between the bolt and the bolt hole.

[0043] The hoisting type engine mounting structure of the application needs to provide mounting matching interfaces on the aircraft body structure, and the upper edge strip 10 of the thrust beam, the right side joint upper edge strip, the left side joint upper edge strip 15 and the engine rear suspension joint 8 are all fixed by fasteners. The engine hoisting is realized by the thrust pin 9, the first support rod 1, the fourth support rod 4 and the engine rear suspension joint 8. The thrust pin 9 of the engine hanging thrust beam 7 is inserted into the engine, which is used to bear the heading and lateral load of the engine. The first engine mounting joint is connected with the first support rod 1 after the bushing and the joint bearing 16 are pressed. The second engine mounting joint is connected with the fourth support rod 4 after the bushing and the joint bearing 16 are pressed.

[0044] The hoisting type engine mounting structure of the application transmits the thrust load and the heading load of the engine to the engine hanging thrust beam 7 through the thrust pin 9, and then transmits them to the body structure through the upper edge strip 10 of the thrust beam. The lateral load is transmitted to the second support rod 2 and the third support rod 3 through the thrust pin 9, and then transmitted to the body structure through the left side joint 5 and the right side joint 6. The vertical load is transmitted to the left side joint 5 and the right side joint 6 by the first support rod 1 and the fourth support rod 4, and then diffused to the body structure. The roll moment of the engine is transmitted to the body structure through a pair of support reaction force couples generated by the left side joint 5, the right side joint 6 and the first support rod 1 and the fourth support rod 4 on both sides. The pitch moment is transmitted by the first support rod 1 and the fourth support rod 4 on both sides and the engine rear suspension joint 8. The yaw moment is transmitted to the body structure through the thrust pin 9, the second support rod 2, the third support rod 3, the left side joint 5, the right side joint 6 and the engine rear suspension joint 8.

[0045] The hoisting type engine mounting structure of the application is approximately composed of multiple triangular structures, and the heading, vertical, lateral, roll, pitch and yaw six degrees of freedom of the engine are fixed through four mounting points. The engine hanging thrust beam 7, the left side joint 5, the right side joint 6 and the engine rear suspension joint 8 are four independent structures which are respectively connected and fixed with the body structure, so that the mounting and dismounting are convenient, the force transmission is clear and direct, and the assembly difficulty and maintenance cost are reduced.

[0046] The hoisting type engine mounting structure of the application is connected with the engine at four points, can fix the six degrees of freedom, effectively diffuses the concentrated load, and ensures the strength and rigidity of the mounting structure. At the same time, this design simplifies the structure form, reduces the weight, shortens the dismounting period, and meets the engine maintenance requirements.

[0047] The hoisting engine mounting structure of the present application has certain practical application value. The design optimizes the structure form, reduces unnecessary complexity, and improves design efficiency. The efficient force transmission path ensures effective load transmission, improving the stability and reliability of the overall structure. In addition, the mounting structure is divided into four parts: the engine hanging thrust beam 7, the left joint 5, the right joint 6, and the engine rear suspension joint 8, reducing assembly difficulty and maintenance cost, and making engine disassembly and maintenance more convenient, improving aircraft maintainability. The integrated design of the thrust pin 9 and the engine hanging thrust beam 7 also reduces the number of fasteners. In terms of weight optimization, the design fully considers the lightweight requirement, minimizing the structure weight while meeting functional requirements.

[0048] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any skilled person in the art can easily think of changes or replacements within the technical scope disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A hoisting type engine mounting structure characterized by comprising: The application relates to an engine hanging thrust beam (7) comprising a thrust beam body, a thrust beam upper edge strip (10), a first thrust beam lug (11), a second thrust beam lug (12) and a thrust pin (9), wherein the thrust beam upper edge strip (10) is arranged at the upper end of the thrust beam body, the upper edge strip (10) is connected with a body structure, the first thrust beam lug (11) is arranged at the left side of the thrust beam body, the second thrust beam lug (12) is arranged at the right side of the thrust beam body, and the thrust pin (9) is arranged at the lower end of the thrust beam body. A right side joint (6) comprises a first right side joint lug, a second right side joint lug and a right side joint upper edge strip, the right side joint upper edge strip is connected with the body structure, the first right side joint lug is connected with the second thrust beam lug (12) through a second support rod (2), and the second right side joint lug is connected with a first support rod (1). A left side joint (5) comprises a first left side joint lug (13), a second left side joint lug (14) and a left side joint upper edge strip (15), the left side joint upper edge strip (15) is connected with the body structure, the first left side joint lug (13) is connected with the first thrust beam lug (11) through a third support rod (3), and the second left side joint lug (14) is connected with a fourth support rod (4). An engine rear suspension joint (8) is connected with the body structure through a rear suspension joint upper edge strip. The engine is hoisted through the thrust pin (9), the first support rod (1), the fourth support rod (4) and the engine rear suspension joint (8). The engine hanging thrust beam (7) is of a web stiffened structure.

2. The hoist-type engine mounting structure according to claim 1, characterized by The thrust beam body, the thrust beam upper edge strip (10), the first thrust beam lug (11), the second thrust beam lug (12) and the thrust pin (9) are integrally formed by titanium alloy forging.

3. The hoist-type engine mounting structure according to claim 2, characterized by The first thrust beam lug (11) is connected with the third support rod (3) through a bolt after a bushing is pressed and assembled.

4. The hoist-type engine mounting structure according to claim 3, characterized by The second thrust beam lug (12) is connected with the second support rod (2) through a bolt after a bushing is pressed and assembled.

5. The hoist-type engine mounting structure according to claim 4, characterized by The first right side joint lug is connected with the second support rod (2) through a bolt after a bushing and a joint bearing (16) are pressed and assembled.

6. The hoist-type engine mounting structure according to claim 5, characterized by The second right side joint lug is connected with the first support rod (1) through a bolt after a bushing and a joint bearing (16) are pressed and assembled.

7. The hoist-type engine mounting structure according to claim 6, characterized by The first left side joint lug (13) is connected with the third support rod (3) through a bolt after a bushing and a joint bearing (16) are pressed and assembled.

8. The hoist-type engine mounting structure according to claim 7, characterized by The second left side joint lug (14) is connected with the fourth support rod (4) through a bolt after a bushing and a joint bearing (16) are pressed and assembled.

9. The hoist-type engine mounting structure according to claim 8, characterized by Both ends of the first support rod (1), the second support rod (2), the third support rod (3) and the fourth support rod (4) are provided with double lug joints (18), and a lightening groove (17) is formed on the support rod body.

10. The hoist-type engine mounting structure according to claim 9, characterized by Four lightening grooves (17) are formed on the support rod body, and a I-shaped cross section is formed.

11. The hoist-on engine mounting structure according to claim 10, characterized by ​ 12. The hoist-on engine mounting structure of claim 11, wherein The engine rear suspension joint (8) is connected with the engine by bolts, and small gap fit is adopted between the bolt and the bolt hole.

13. The hoist-on engine mounting structure of claim 12, wherein The first engine mounting joint is connected with the first support rod (1) after the press-fitted bushing and the joint bearing (16) are installed.

14. The hoist-on engine mounting structure according to claim 13, characterized by The second engine mounting joint is connected with the fourth support rod (4) after the press-fitted bushing and the joint bearing (16) are installed.

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