Airplane air inlet duct supporting assembly

Abstract

The utility model discloses an airplane air inlet channel supporting assembly which comprises an air inlet channel body, a fixing frame, an upper clamping device arranged above the fixing frame, a longitudinal beam, a supporting head used for supporting the lower portion of the air inlet channel body and a plurality of sets of locking screws. For different products, the supporting heads with different supporting faces can be replaced through the quick-changing structure, the vertical height position of the supporting arm can be adjusted through the long-strip-shaped hole, the front-back position of the supporting arm can be adjusted through the second sliding rod, the left-right position of the supporting arm can be adjusted through the first sliding rod, the air inlet channel supporting device can be suitable for air inlet channels of different models, and the application range is wide.

Description

Technical Field

[0001] The utility model relates to the technical field of aircraft parts processing, in particular to an aircraft air inlet support component. Background Art

[0002] As the inlet and passage for the air required by the jet engine, the air intake not only provides a certain amount of air to the aircraft engine, but also the air flow field of the intake must ensure the normal operation of the compressor and the combustion chamber. During flight, the air intake must achieve deceleration and pressurization of high-speed airflow, converting the kinetic energy of the airflow into pressure energy. As the flight speed increases, the pressurization effect of the air intake becomes greater and greater. During supersonic flight, the pressurization effect can greatly exceed that of the compressor. Therefore, the aircraft air intake plays an important role in improving flight performance.

[0003] Traditional air inlets are made of metal blocks and assembled by welding or mechanical connection. Due to the heavy weight of metal materials, they cannot adapt to the lightweight design concept. In order to adapt to the structure of the air inlet, the metal blocks are cut a lot. After welding or mechanical connection, the connection is easily damaged or broken under high-frequency vibration and load, which cannot meet the needs of further development of supersonic aircraft. With the development of aerospace technology, multi-layer composite materials with many advantages such as small specific gravity, high specific strength and specific modulus have gradually become the incomparable preferred material in the aerospace field, and are also the preferred material for the manufacture of aircraft air inlets. When using multi-layer composite materials to make aircraft air inlets, fixed fixtures are required for fixing. The common fixed fixtures used to support the support part under the air inlet can only be applied to one type of air inlet product, and cannot be applied to products of different models. Therefore, it is necessary to optimize and improve the structure of the aircraft air inlet support assembly. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes an aircraft air inlet support component.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an aircraft air inlet support assembly, comprising an air inlet body, a fixing frame, an upper clamping device arranged above the fixing frame, a longitudinal beam, a support head for supporting the lower part of the air inlet body, and multiple sets of locking screws, the longitudinal beam is fixedly connected between the inner front wall and the inner rear wall of the fixing frame, and the upper surface of the longitudinal beam is flush with the upper surface of the fixing frame, the side wall of the longitudinal beam is slidably connected with a first sliding seat through a sliding structure, the lower wall of the longitudinal beam is fixedly connected with a support, a support driving structure for driving the first sliding seat to move up and down is arranged between the support and the first sliding seat, the side of the first sliding seat away from the longitudinal beam is slidably connected with the second sliding seat through a first adjusting structure, the rear wall of the second sliding seat is slidably connected with a connecting seat through a second adjusting structure, the side of the connecting seat away from the second sliding seat is detachably connected with a supporting arm, the supporting head is detachably connected to the upper end of the supporting arm through a quick-change structure, and the end of the supporting head away from the supporting arm is provided with a supporting surface consistent with the shape of the outer wall of the lower part of the air inlet body.

[0006] As a further description of the above technical solution:

[0007] The sliding structure is a slide bar, which is fixedly connected to the side wall of the longitudinal beam. The length direction of the slide bar is horizontal and the direction is vertical. The first sliding seat is slidably connected to the side of the slide bar away from the longitudinal beam, and the first sliding seat is slidably connected to the longitudinal beam through the slide bar.

[0008] As a further description of the above technical solution:

[0009] The supporting driving structure includes a fixed seat and a cylinder. The fixed seat is fixedly connected to the side wall of the support and is located below the first sliding seat. The cylinder is fixedly connected to the lower wall of the fixed seat. The end of the cylinder protruding shaft passes through the inner wall of the fixed seat and extends to the top of the fixed seat. The end of the cylinder protruding shaft is fixedly connected to the lower wall of the first sliding seat. The first sliding seat is guided to move up and down by two sets of guide rods.

[0010] As a further description of the above technical solution:

[0011] The first adjustment structure includes two groups of first sliding rods, which are distributed front and back and fixedly connected in sequence to the side of the first sliding seat away from the longitudinal beam. The ends of the two groups of first sliding rods away from the first sliding seat both penetrate the inner wall of the second sliding seat and are slidably connected thereto.

[0012] As a further description of the above technical solution:

[0013] The second adjustment structure includes two groups of second sliding rods, which are distributed up and down and fixedly connected to the end of the connecting seat away from the support arm in sequence. The ends of the two groups of second sliding rods away from the connecting seat both penetrate the inner wall of the second sliding seat and are slidably connected thereto.

[0014] As a further description of the above technical solution:

[0015] The quick-change structure includes a card joint and a card hole, and the card joint and the card hole are respectively arranged between the support head and the opposite side of the support arm. The support head is detachably connected to the support arm through the card joint and the card hole, and the card joint and the support arm are locked by a locking screw.

[0016] As a further description of the above technical solution:

[0017] The inner wall of the support arm is provided with a long hole, and the inner side wall of the long hole is slidably connected with two groups of locking blocks, and the two groups of locking blocks and the connecting seat are locked by two groups of hexagon socket screws.

[0018] The utility model has the following beneficial effects:

[0019] Compared with the prior art, the aircraft air inlet support assembly can replace the support head with different support surfaces through a quick-change structure to meet the needs of different products, and can adjust the upper and lower height positions of the support arm through the long holes, as well as adjust the front and rear positions of the support arm through the second slide bar and adjust the left and right positions of the support arm through the first slide bar. It can be applied to different types of air inlets and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of an aircraft air inlet support assembly proposed by the utility model;

[0021] Figure 2 This is a top view schematic diagram of a fixing frame and a longitudinal beam connection structure of an aircraft air inlet support assembly proposed by the utility model;

[0022] Figure 3 It is a partial cross-sectional schematic diagram of a longitudinal beam and a support arm connection structure of an aircraft air inlet support assembly proposed by the utility model;

[0023] Figure 4 This is a schematic diagram of the connection structure of a support head and a clamping joint of an aircraft air inlet support assembly proposed by the utility model;

[0024] Figure 5 It is a partial cross-sectional schematic diagram of a support arm and a locking block connection structure of an aircraft air inlet support assembly proposed by the utility model;

[0025] Figure 6 The utility model is a partial cross-sectional view of a top view of a support arm and a locking block connection structure of an aircraft air inlet support assembly.

[0026] Legend:

[0027] 1. Fixed frame; 2. Support arm; 3. Support head; 4. Upper clamping device; 5. Longitudinal beam; 6. Support; 7. Fixed seat; 8. Guide rod; 9. Cylinder; 10. Slide; 11. First sliding seat; 12. Second sliding seat; 13. First slide bar; 14. Second slide bar; 15. Connecting seat; 16. Long hole; 17. Hexagon socket screw; 18. Card joint; 19. Card hole; 20. Locking block. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] Reference Figures 1 to 6 The utility model provides an aircraft air inlet support assembly: comprising an air inlet body, a fixing frame 1, an upper clamping device 4 arranged above the fixing frame 1, a longitudinal beam 5, a support head 3 for supporting the lower part of the air inlet body, and a plurality of sets of locking screws, wherein the longitudinal beam 5 is fixedly connected between the inner front wall and the inner rear wall of the fixing frame 1, and the upper surface of the longitudinal beam 5 is flush with the upper surface of the fixing frame 1, and the upper clamping device 4 is mainly used for clamping and fixing the air inlet body from the top and the side after the support head 3 supports the aircraft air inlet body from the bottom;

[0030] like Figure 1 , Figure 3 As shown, in order to facilitate the support head 3 to approach and move away from the lower wall of the air inlet body, the side wall of the longitudinal beam 5 is slidably connected with the first sliding seat 11 through a sliding structure. The sliding structure is a slide bar 10. The slide bar 10 is fixedly connected to the side wall of the longitudinal beam 5. The length direction of the slide bar 10 is horizontal and vertical. The first sliding seat 11 is slidably connected to the side of the slide bar 10 away from the longitudinal beam 5. The first sliding seat 11 is slidably connected to the longitudinal beam 5 through the slide bar 10, and the first sliding seat 11 can slide up and down along the slide bar 10;

[0031] like Figure 3As shown, in order to drive the support head 3 to rise and fall, a support 6 is fixedly connected to the lower wall of the longitudinal beam 5, and a support driving structure for driving the first sliding seat 11 to move up and down is arranged between the support 6 and the first sliding seat 11. The support driving structure includes a fixed seat 7 and a cylinder 9. The fixed seat 7 is fixedly connected to the side wall of the support 6 and is located below the first sliding seat 11. The cylinder 9 is fixedly connected to the lower wall of the fixed seat 7. The end of the cylinder 9 extending shaft penetrates the inner wall of the fixed seat 7 and extends to the top of the fixed seat 7. The end of the cylinder 9 extending shaft is fixedly connected to the lower wall of the first sliding seat 11. The first sliding seat 11 moves up and down through two groups of guide rods 8 to guide the extension and retraction of the extension shaft of the cylinder 9, which can drive the support head 3 to rise and fall. When rising, the support head 3 abuts against the lower wall of the air inlet body to form a supporting effect.

[0032] like Figure 3 As shown, in order to facilitate the adjustment of the left and right positions of the support head 3, the side of the first sliding seat 11 away from the longitudinal beam 5 is slidably connected to the second sliding seat 12 through a first adjusting structure. The first adjusting structure includes two groups of first sliding rods 13. The two groups of first sliding rods 13 are distributed front and back and are fixedly connected in sequence to the side of the first sliding seat 11 away from the longitudinal beam 5. One end of the two groups of first sliding rods 13 away from the first sliding seat 11 passes through the inner wall of the second sliding seat 12 and is slidably connected thereto. The second sliding seat 12 and the first sliding rod 13 are locked by a locking screw. After loosening the locking screw, the second sliding seat 12 can be moved left and right along the outer wall of the first sliding rod 13 as needed to adjust the left and right positions of the support head 3.

[0033] like Figure 3 As shown, in order to facilitate the adjustment of the front and rear position of the support head 3, the rear wall of the second sliding seat 12 is slidably connected to the connecting seat 15 through the second adjustment structure. The second adjustment structure includes two groups of second sliding rods 14. The two groups of second sliding rods 14 are distributed up and down and are fixedly connected to the end of the connecting seat 15 away from the support arm 2 in sequence. The ends of the two groups of second sliding rods 14 away from the connecting seat 15 both penetrate the inner wall of the second sliding seat 12 and are slidably connected thereto. The second sliding seat 12 and the second sliding rod 14 are locked by a locking screw. After loosening the locking screw, the connecting seat 15 can be moved forward and backward along the axial direction of the second sliding rod 14 to adjust the front and rear position of the support head 3.

[0034] like Figure 3 , Figure 4 , Figure 5 as well as Figure 6As shown, in order to be suitable for different models of products and to facilitate the adjustment of the height of the support head 3, the side of the connecting seat 15 away from the second sliding seat 12 is detachably connected to the support arm 2, and the support head 3 is detachably connected to the upper end of the support arm 2 through a quick-change structure. The end of the support head 3 away from the support arm 2 is provided with a support surface consistent with the shape of the outer wall of the lower part of the air inlet body, and the quick-change structure includes a clamping joint 18 and a clamping hole 19. The clamping joint 18 and the clamping hole 19 are respectively arranged between the support head 3 and the opposite side of the support arm 2. The support head 3 is connected to the upper end of the support arm 2 through the clamping joint 18 and the clamping hole 19. The connecting hole 19 is detachably connected to the support arm 2, and the clamping joint 18 is locked to the support arm 2 by a locking screw. The inner wall of the support arm 2 is provided with a long hole 16, and the inner wall of the long hole 16 is slidably connected with two groups of locking blocks 20. The two groups of locking blocks 20 and the connecting seat 15 are locked by two groups of hexagon socket screws 17. Through the quick-change structure, the support head 3 with supporting surfaces of different shapes can be selected according to different products to adapt to different models of products. After loosening the hexagon socket screw 17, the height range of the support arm 2 can be adjusted to meet the movement stroke of the cylinder 9 extending out of the shaft.

[0035] Working principle: The upper clamping device 4 is mainly used for clamping and fixing the aircraft air inlet body from the top and the side after the support head 3 supports the aircraft air inlet body from the bottom. The first sliding seat 11 can slide up and down along the slide bar 10, and the cylinder 9 extends and retracts the shaft, which can drive the support head 3 to rise and fall. When rising, the support head 3 abuts against the lower wall of the air inlet body to form a supporting effect. After loosening the locking screw, the second sliding seat 12 can be moved left and right along the outer wall of the first slide bar 13 as needed to adjust the left and right position of the support head 3. The connecting seat 15 can be moved forward and backward along the axis of the second slide bar 14 to adjust the front and rear position of the support head 3. Through the quick-change structure, support heads 3 with support surfaces of different shapes can be selected according to different products to adapt to different models of products. After loosening the hexagon socket screw 17, the height range of the support arm 2 can be adjusted to meet the movement stroke of the cylinder 9 extension shaft.

[0036] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An aircraft air inlet support assembly, characterized in that: The invention comprises an air inlet duct body, a fixing frame (1), an upper clamping device (4) arranged above the fixing frame (1), a longitudinal beam (5), a supporting head (3) for supporting the lower part of the air inlet duct body, and a plurality of sets of locking screws, wherein the longitudinal beam (5) is fixedly connected between the inner front wall and the inner rear wall of the fixing frame (1), and the upper surface of the longitudinal beam (5) is flush with the upper surface of the fixing frame (1), the side wall of the longitudinal beam (5) is slidably connected to a first sliding seat (11) through a sliding structure, the lower wall of the longitudinal beam (5) is fixedly connected to a support (6), and a support for driving the first sliding seat (11) is arranged between the support (6) and the first sliding seat (11). (11) a supporting driving structure that moves up and down, wherein the first sliding seat (11) is slidably connected to the second sliding seat (12) on the side away from the longitudinal beam (5) via a first adjusting structure, and the rear wall of the second sliding seat (12) is slidably connected to a connecting seat (15) via a second adjusting structure, and the connecting seat (15) is detachably connected to the supporting arm (2) on the side away from the second sliding seat (12), and the supporting head (3) is detachably connected to the upper end of the supporting arm (2) via a quick-change structure, and the end of the supporting head (3) away from the supporting arm (2) is provided with a supporting surface that is consistent with the shape of the outer wall of the lower part of the air inlet duct body.

2. An aircraft air inlet support assembly according to claim 1, characterized in that: The sliding structure is a slide bar (10), the slide bar (10) is fixedly connected to the side wall of the longitudinal beam (5), the length direction of the slide bar (10) is horizontal and the length direction is vertical, the first sliding seat (11) is slidably connected to the side of the slide bar (10) away from the longitudinal beam (5), and the first sliding seat (11) is slidably connected to the longitudinal beam (5) through the slide bar (10).

3. An aircraft air inlet support assembly according to claim 2, characterized in that: The support drive structure comprises a fixed seat (7) and a cylinder (9); the fixed seat (7) is fixedly connected to the side wall of the support (6) and is located below the first sliding seat (11); the cylinder (9) is fixedly connected to the lower wall of the fixed seat (7); the protruding shaft end of the cylinder (9) passes through the inner wall of the fixed seat (7) and protrudes to the top of the fixed seat (7); the protruding shaft end of the cylinder (9) is fixedly connected to the lower wall of the first sliding seat (11); and the first sliding seat (11) is guided to move up and down by two sets of guide rods (8).

4. The aircraft air inlet support assembly according to claim 3, characterized in that: The first adjustment structure comprises two groups of first sliding rods (13), the two groups of first sliding rods (13) are fixedly connected in sequence in a front-to-rear distribution to a side of the first sliding seat (11) away from the longitudinal beam (5), and the ends of the two groups of first sliding rods (13) away from the first sliding seat (11) both penetrate the inner wall of the second sliding seat (12) and are both slidably connected thereto.

5. The aircraft air inlet support assembly according to claim 4, characterized in that: The second adjustment structure comprises two groups of second sliding rods (14), the two groups of second sliding rods (14) are distributed up and down and are fixedly connected in sequence to one end of the connecting seat (15) away from the support arm (2), and the ends of the two groups of second sliding rods (14) away from the connecting seat (15) both penetrate the inner wall of the second sliding seat (12) and are slidably connected thereto.

6. An aircraft air inlet support assembly according to claim 5, characterized in that: The quick-change structure comprises a clamping joint (18) and a clamping hole (19), wherein the clamping joint (18) and the clamping hole (19) are respectively arranged between the support head (3) and the opposite side of the support arm (2), and the support head (3) is detachably connected to the support arm (2) via the clamping joint (18) and the clamping hole (19), and the clamping joint (18) and the support arm (2) are locked by a locking screw.

7. An aircraft air inlet support assembly according to claim 6, characterized in that: The inner wall of the support arm (2) is provided with a long hole (16), and the inner wall of the long hole (16) is slidably connected with two groups of locking blocks (20), and the two groups of locking blocks (20) and the connecting seat (15) are locked by two groups of hexagon socket screws (17).

Images