A hoisting engine mounting structure

Abstract

This application belongs to the field of engine mounting structures, and specifically relates to a hoisting engine mounting structure. The structure includes: a thrust beam upper edge strip disposed at the upper end of the thrust beam body, the upper edge strip being connected to the engine block structure; a first thrust beam lug disposed on the left side of the thrust beam body, a second thrust beam lug disposed on the right side of the thrust beam body, and a thrust pin disposed at the lower end of the thrust beam body; a right-side connector upper edge strip being connected to the engine block structure, a first right-side connector lug being connected to a second thrust beam lug via a second strut, and a second right-side connector lug being connected to a first strut; a left-side connector upper edge strip being connected to the engine block structure, a first left-side connector lug being connected to a first thrust beam lug via a third strut, and a second left-side connector lug being connected to a fourth strut; and an engine rear suspension connector being connected to the engine block structure via a rear suspension connector upper edge strip; wherein, engine hoisting is achieved through the thrust pin, the first strut, the fourth strut, and the engine rear suspension connector.

Description

Technical Field

[0001] This application belongs to the field of engine mounting structures, and specifically relates to a hoisting engine mounting structure. Background Technology

[0002] Currently, most aircraft engine installations, both domestically and internationally, employ either internal mounting or wing-mounted designs. Internally mounted engines are installed within the fuselage or wing root, typically secured on both sides, offering advantages such as lower aerodynamic drag and stronger resistance to foreign object damage. However, aircraft engine mounting structure design usually needs to accommodate the engine mounting interface layout. Limited by internal fuselage space and the constraints of the engine mounting interface arrangement, internally mounted engines often require complex structural designs to meet the engine's load-bearing and force transmission requirements, resulting in a complex overall structure and significant manufacturing and assembly difficulties. Optimizing the structural layout and improving the force transmission path design can effectively improve force transmission efficiency, reduce structural weight, and simplify assembly processes, thereby achieving higher engineering application value. Currently, there is no domestic experience in designing such aircraft engine mounting structures for internally mounted engines with top-mounted interfaces.

[0003] Therefore, there is an urgent need for a technical solution to overcome or mitigate at least one of the aforementioned defects in the existing technology. Utility Model Content

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

[0005] The technical solution of this application is:

[0006] A hoisting engine mounting structure, comprising:

[0007] An engine-mounted thrust beam includes a thrust beam body, a thrust beam upper edge strip, a first thrust beam lug, a second thrust beam lug, and a thrust pin. The thrust beam upper edge strip is located at the upper end of the thrust beam body and is connected to the engine block structure. The first thrust beam lug is located on the left side of the thrust beam body, the second thrust beam lug is located on the right side of the thrust beam body, and the thrust pin is located at the lower end of the thrust beam body.

[0008] The right-side connector includes a first right-side connector lug, a second right-side connector lug, and a right-side connector upper edge strip. The right-side connector upper edge strip is connected to the body structure. The first right-side connector lug is connected to the second thrust beam lug via a second support rod, and the second right-side connector lug is connected to the first support rod.

[0009] The left connector includes a first left connector lug, a second left connector lug, and a left connector upper edge strip. The left connector upper edge strip is connected to the body structure. The first left connector lug is connected to the first thrust beam lug via a third support rod. The second left connector lug is connected to a fourth support rod.

[0010] The engine rear suspension connector is connected to the engine body structure via the upper edge strip of the rear suspension connector.

[0011] The engine is hoisted using the thrust pin, the first strut, the fourth strut, and the engine rear suspension joint.

[0012] In at least one embodiment of this application, the engine-suspended thrust beam is a web-reinforced structure.

[0013] In at least one embodiment of this application, the thrust beam body, the upper edge strip of the thrust beam, the first thrust beam lug, the second thrust beam lug, and the thrust pin are forged from titanium alloy into a single integral part.

[0014] In at least one embodiment of this application, the first thrust beam lug is connected to the third strut by bolts after the bushing is pressed in.

[0015] In at least one embodiment of this application, the second thrust beam lug is connected to the second strut by bolts after the bushing is pressed in.

[0016] In at least one embodiment of this application, the first right-side connector lug is press-fitted with a bushing and a spherical bearing and then connected to the second strut by bolts.

[0017] In at least one embodiment of this application, the second right-side connector lug is press-fitted with a bushing and a spherical bearing and then connected to the first support rod by bolts.

[0018] In at least one embodiment of this application, the first left-side connector lug is press-fitted with a bushing and a spherical bearing and then connected to the third strut by bolts.

[0019] In at least one embodiment of this application, the second left-side connector lug is press-fitted with a bushing and a spherical bearing and then connected to the fourth support rod by bolts.

[0020] In at least one embodiment of this application, the first support rod, the second support rod, the third support rod, and the fourth support rod are all provided with double-ear joints at both ends, and the support rod body is provided with a light-reducing groove.

[0021] In at least one embodiment of this application, the strut has four light-reducing grooves forming an I-shaped cross-section.

[0022] In at least one embodiment of this application, the engine rear suspension joint is connected to the engine by bolts, and a small clearance fit is used between the bolts and the bolt holes.

[0023] In at least one embodiment of this application, the first engine mounting joint is connected to the first strut after press-fitting the bushing and the spherical bearing.

[0024] In at least one embodiment of this application, the second engine mounting joint is press-fitted with a bushing and a spherical bearing and then connected to the fourth strut.

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

[0026] The present application proposes a novel hoisting engine installation structure based on existing embedded hoisting engine installation schemes to meet specific performance requirements. By optimizing the hoisting structure design, simplifying the force transmission path, improving the stability and reliability of engine installation, reducing the overall weight, and simplifying the assembly process, it provides an efficient and reliable installation method for embedded engines. Attached Figure Description

[0027] Figure 1 This is an overall schematic diagram of a hoisting engine mounting structure according to one embodiment of this application;

[0028] Figure 2 This is a schematic diagram of an engine-mounted thrust beam according to one embodiment of this application;

[0029] Figure 3 This is a schematic diagram of the left-side connector according to one embodiment of this application;

[0030] Figure 4 This is a schematic diagram of a strut according to one embodiment of this application.

[0031] in:

[0032] 1-First strut; 2-Second strut; 3-Third strut; 4-Fourth strut; 5-Left side connector; 6-Right side connector; 7-Engine suspension thrust beam; 8-Engine rear suspension connector; 9-Thrust pin; 11-First thrust beam lug; 12-Second thrust beam lug; 13-First left side connector lug; 14-Second left side connector lug; 15-Left side connector upper edge strip; 16-Spherical bearing; 17-Lightening groove; 18-Double lug connector. Detailed Implementation

[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 connector 6 includes an integrated first right-side connector lug, a second right-side connector lug, and a right-side connector upper edge strip. The right-side connector upper edge strip is connected to the machine body structure. The first right-side connector lug is connected to the second thrust beam lug 12 via the second support rod 2, and the second right-side connector lug is connected to the first support rod 1. The first right-side connector lug is press-fitted with a bushing and a spherical bearing 16 and then bolted to the second support rod 2. The second right-side connector lug is press-fitted with a bushing and a spherical bearing 16 and then bolted to the first support rod 1.

[0040] The left connector 5 adopts a similar structural design to the right connector 6, such as Figure 3 As shown, the left connector 5 includes an integrated first left connector lug 13, a second left connector lug 14, and a left connector upper edge strip 15. The left connector upper edge strip 15 is connected to the body structure. The first left connector lug 13 is connected to the first thrust beam lug 11 via a third support rod 3, and the second left connector lug 14 is connected to the fourth support rod 4. Specifically, the first left connector lug 13 is press-fitted with a bushing and a spherical bearing 16 and then connected to the third support rod 3 via bolts. The second left connector lug 14 is press-fitted with a bushing and a spherical bearing 16 and then connected to the fourth support rod 4 via bolts.

[0041] In the preferred embodiment of this application, such as Figure 4 As shown, both ends of the first strut 1, second strut 2, third strut 3, and fourth strut 4 are provided with double-ear joints 18, and each strut body has a light-reducing groove 17. In this embodiment, each strut body has four light-reducing grooves 17, forming an I-shaped cross-section. The double-ear joints 18 of each strut are bolted to the single-ear joint of the engine. To avoid the first strut 1 and fourth strut 4 bearing loads under engine yaw load conditions, spherical bearings are press-fitted into the lugs of the engine mounting joints on both sides of the strut and the left and right side engine lateral joints. At the same time, spherical bearings are also press-fitted into the lugs connected to the second strut 2 and the third strut 3 to prevent the struts from bearing torsional deformation when the airframe structure undergoes torsional deformation.

[0042] The engine rear suspension connector 8 is connected to the engine body via the upper edge strip of the rear suspension connector; the engine rear suspension connector 8 is connected to the engine via bolts, and the bolts and bolt holes are fitted with a small clearance.

[0043] The hoisting engine mounting structure of this application requires an installation interface on the aircraft fuselage structure. It is fully secured to the upper edge strip 10 of the thrust beam, the upper edge strip of the right connector, the upper edge strip of the left connector 15, and the engine rear suspension connector 8 using fasteners. Engine hoisting is achieved through thrust pins 9, first struts 1, fourth struts 4, and the engine rear suspension connector 8. The thrust pin 9 on the engine hoisting thrust beam 7 is inserted into the engine to bear the engine's directional and lateral loads. The first engine mounting connector is press-fitted with a bushing and a spherical bearing 16 before connecting to the first strut 1. The second engine mounting connector is press-fitted with a bushing and a spherical bearing 16 before connecting to the fourth strut 4.

[0044] In the hoisted engine mounting structure of this application, the engine's thrust and yaw loads are transmitted to the engine-mounted thrust beam 7 via thrust pin 9, and then to the airframe structure via the upper edge strip 10 of the thrust beam. Lateral loads are transmitted to the second strut 2 and the third strut 3 via thrust pin 9, and then to the airframe structure via the left connector 5 and the right connector 6. Vertical loads are transmitted to the left connector 5 and the right connector 6 via the first strut 1 and the fourth strut 4, and then diffused to the airframe structure. The engine's roll moment is transmitted to the airframe structure via a pair of reaction couples generated by the left connector 5, the right connector 6, and the first strut 1 and the fourth strut 4 on both sides. The pitch moment is transmitted jointly by the first strut 1 and the fourth strut 4 on both sides and the engine rear suspension connector 8. The yaw moment is transmitted to the airframe structure via thrust pin 9, the second strut 2, the third strut 3, the left connector 5, the right connector 6, and the engine rear suspension connector 8.

[0045] The hoisting engine mounting structure of this application is approximately composed of multiple triangular structures, achieving engine fixation in six degrees of freedom (heading, vertical, lateral, roll, pitch, and yaw) through four mounting points. The four independent structures—engine hoisting thrust beam 7, left-side connector 5, right-side connector 6, and engine rear suspension connector 8—are individually connected and fixed to the airframe structure, facilitating installation and disassembly, providing clear and direct force transmission, and reducing assembly difficulty and maintenance costs.

[0046] The hoisting engine mounting structure of this application connects to the engine at four points, fixing its six degrees of freedom and effectively distributing concentrated loads, ensuring the strength and rigidity of the mounting structure. At the same time, this design simplifies the structural form, reduces weight, and shortens the disassembly cycle, meeting the engine maintainability requirements.

[0047] The hoisted engine mounting structure of this application has certain practical application value. This design, by optimizing the structural form, reduces unnecessary complexity and improves design efficiency. An efficient force transmission path ensures effective load transfer, enhancing the overall structural stability and reliability. Furthermore, the mounting structure is divided into four parts: the engine hoisting thrust beam 7, the left-side connector 5, the right-side connector 6, and the engine rear suspension connector 8. This reduces assembly difficulty and maintenance costs, and also makes engine disassembly and maintenance more convenient, improving aircraft maintainability. The integrated design of the thrust pin 9 and the engine hoisting thrust beam 7 also reduces the number of fasteners. Regarding weight optimization, this design fully considers lightweight requirements, minimizing structural weight while meeting functional needs.

[0048] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A hoisting engine mounting structure, characterized in that, include: The engine-mounted thrust beam (7) includes 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). The thrust beam upper edge strip (10) is located at the upper end of the thrust beam body and is connected to the engine body structure. The first thrust beam lug (11) is located on the left side of the thrust beam body, the second thrust beam lug (12) is located on the right side of the thrust beam body, and the thrust pin (9) is located at the lower end of the thrust beam body. The right-side connector (6) includes a first right-side connector lug, a second right-side connector lug, and a right-side connector upper edge strip. The right-side connector upper edge strip is connected to the body structure. The first right-side connector lug is connected to the second thrust beam lug (12) through the second support rod (2). The second right-side connector lug is connected to the first support rod (1). The left connector (5) includes a first left connector ear piece (13), a second left connector ear piece (14), and a left connector upper edge strip (15). The left connector upper edge strip (15) is connected to the body structure. The first left connector ear piece (13) is connected to the first thrust beam ear piece (11) through a third support rod (3). The second left connector ear piece (14) is connected to the fourth support rod (4). The engine rear suspension connector (8) is connected to the engine body structure through the upper edge strip of the rear suspension connector; The engine is hoisted by the thrust pin (9), the first strut (1), the fourth strut (4), and the engine rear suspension joint (8).

2. The hoisting engine mounting structure according to claim 1, characterized in that, The engine-mounted thrust beam (7) is a web-reinforced structure.

3. The hoisting engine mounting structure according to claim 2, characterized in that, 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.

4. The hoisting engine mounting structure according to claim 3, characterized in that, After the first thrust beam lug (11) is press-fitted with a bushing, it is connected to the third strut (3) by bolts.

5. The hoisting engine mounting structure according to claim 4, characterized in that, After the second thrust beam lug (12) is press-fitted with the bushing, it is connected to the second strut (2) by bolts.

6. The hoisting engine mounting structure according to claim 5, characterized in that, The first right-side connector lug is press-fitted with a bushing and a spherical bearing (16) and then connected to the second strut (2) by bolts.

7. The hoisting engine mounting structure according to claim 6, characterized in that, The second right-side connector lug is press-fitted with a bushing and a spherical bearing (16) and then connected to the first strut (1) by bolts.

8. The hoisting engine mounting structure according to claim 7, characterized in that, The first left-side connector lug (13) is press-fitted with a bushing and a spherical bearing (16) and then connected to the third strut (3) by bolts.

9. The hoisting engine mounting structure according to claim 8, characterized in that, The second left-side connector lug (14) is press-fitted with a bushing and a spherical bearing (16) and then connected to the fourth strut (4) by bolts.

10. The hoisting engine mounting structure according to claim 9, characterized in that, The first support rod (1), the second support rod (2), the third support rod (3) and the fourth support rod (4) are all provided with double-ear joints (18) at both ends, and the support rod body is provided with a light-reducing groove (17).

11. The hoisting engine mounting structure according to claim 10, characterized in that, Each of the struts has four light-reducing grooves (17) to form an I-shaped cross-section.

12. The hoisting engine mounting structure according to claim 11, characterized in that, The engine rear suspension joint (8) is connected to the engine by bolts, and the bolts and bolt holes are fitted with a small clearance.

13. The hoisting engine mounting structure according to claim 12, characterized in that, After the first engine mounting joint presses in the bushing and the spherical bearing (16), it is connected to the first strut (1).

14. The hoisting engine mounting structure according to claim 13, characterized in that, After the second engine mounting joint presses in the bushing and the spherical bearing (16), it is connected to the fourth strut (4).

Images