Positioning riveting fixture for aircraft refueling pod shell

Abstract

The utility model provides an aircraft refueling pod shell positioning riveting fixture which comprises longitudinal bases arranged in parallel, stand columns are fixed to the tops of the longitudinal bases, top cross beams are fixed to the tops of the stand columns on the two sides, and a pod shell tail section bottom beam and a pod shell front section bottom beam are fixed between the inner side walls of the longitudinal bases. A sliding rail is fixed to the top of a tail section bottom beam of the pod shell, and a sliding supporting assembly is slidably installed at the top of the sliding rail. A tail-section lateral clamping plate structure is mounted between the outer wall of the tail-section bottom beam of the pod shell and the top cross beam; a plurality of groups of front-section lateral clamping plate structures are fixed between the front-section bottom beam and the top cross beam of the pod shell; and a front-section shell butt-joint frame positioner is fixedly mounted on the front-section lateral clamping plate structure at the end part. Riveting of the pod shell is achieved, then the positioning and assembling precision is guaranteed, the positioning and assembling process is simplified, the assembling efficiency is improved, and finally the product quality is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of aviation equipment manufacturing, in particular to a positioning riveting jig for an aircraft refueling pod shell. Background Art

[0002] The shell of a certain type of aircraft refueling pod consists of two sections, front and rear, which are thin-walled sheet metal assemblies riveted together by frames, long spars, and skins. The interchangeability of the shell and the accuracy of the intersection position are very high. According to the traditional tooling configuration, at least the front section riveting jig, the tail section riveting jig, and the front and rear section special matching jigs are required. The number of tooling sets is large, the cost is high, and it takes up a lot of space. Traditional riveting jigs are mostly manufactured using the mold line template working method. It is necessary to make standard samples or standard tooling, and manually cut and grind multiple templates for tooling manufacturing and product inspection. Each positioning component needs to be positioned and cast on-site with the coordination of standard samples or standard tooling. The process is complicated, the manufacturing precision is low, the manufacturing period is long, the manufacturing cost is high, and the installation and interchangeability requirements of the product are often not met due to the low positioning and assembly precision of the jig. Utility Model Content

[0003] The purpose of the utility model is to provide a positioning riveting jig for the shell of an aircraft refueling pod. This jig is based on the product digital model of the shell of the aircraft refueling pod and adopts a structural form of segmented riveting and multi-segment docking combined assembly to realize the riveting of the pod shell, thereby ensuring the positioning assembly accuracy, simplifying the positioning assembly process, improving the assembly efficiency, and ultimately ensuring the quality of the product.

[0004] In order to realize the above-mentioned technical features, the purpose of the utility model is realized as follows: a positioning riveting jig for an aircraft refueling pod shell, comprising longitudinal bases arranged in parallel, columns fixed on the top of the longitudinal bases, top cross beams fixed on the tops of the columns on both sides, a pod shell tail section bottom beam and a pod shell front section bottom beam fixed between the inner side walls of the longitudinal bases, a slide rail fixed on the top of the pod shell tail section bottom beam, a sliding support assembly slidably installed on the top of the slide rail; a tail section lateral clamping plate structure is installed between the outer wall of the pod shell tail section bottom beam and the top cross beam; a plurality of front section lateral clamping plate structures are fixed between the front section bottom beam and the top cross beam of the pod shell, and a front section shell docking frame locator is fixedly installed on the front section lateral clamping plate structure located at the end part.

[0005] Oblique reinforcement rods are fixed between the two sides of the column and the longitudinal base.

[0006] Supporting foot pads for horizontal adjustment are fixed to the four corners of the bottom of the longitudinal base.

[0007] A U-shaped connecting frame is fixed on the outer side of the middle part of the bottom beam and the top cross beam of the tail section of the pod shell.

[0008] The sliding support assembly includes a slider slidably mounted on the top of the slide rail, a sliding bottom beam is fixed on the top of the slider, a lower card mounting seat is symmetrically fixed on the top of the sliding bottom beam through a first connecting plate, and a lower card is fixed on the top of the lower card mounting seat.

[0009] A push-pull handle is fixed on one side of the top end of the sliding bottom beam;

[0010] The slide rails adopt a double slide rail structure arranged in parallel.

[0011] The tail section lateral clamping plate structure includes a plurality of lateral fixing seats fixed on the outer side wall of the bottom beam of the tail section of the pod shell, the top of the lateral fixing seat is fixed with a bottom cross bar through a short column, the top of the bottom cross bar is fixed with a lower mounting seat, the top of the lower mounting seat is fixed with a tail section lateral clamping plate, and the top end of the tail section lateral clamping plate is fixed to the bottom end of the top cross beam through an upper mounting seat;

[0012] The ends of the bottom crossbar and the top crossbeam are fixed with a rear shell docking frame.

[0013] The front section lateral clamping plate structure includes a second clamping plate seat fixed on the top of the front section bottom beam of the pod shell, a front section clamping plate is fixed on the top of the second clamping plate seat, and front section lateral clamping plates are arranged on both sides of the front section clamping plate. The two ends of the front section lateral clamping plate are respectively fixed between the front section bottom beam and the top cross beam of the pod shell through the lateral clamping plate seats.

[0014] An integral positioning frame is fixed to the bottom end of the top crossbeam on the side where the front section lateral clamping plate structure is located;

[0015] A side panel positioning assembly is symmetrically arranged directly below the integral positioning frame. The side panel positioning assembly includes a positioning disc, which is fixed on the top of a disc mounting seat. The disc mounting seat is fixed to the outer wall of the bottom beam of the front section of the pod shell through a column base.

[0016] An end frame positioning assembly is fixed to the tail end of the front bottom beam of the pod shell. The end frame positioning assembly includes an end plate, which is fixed to the top of the combined base through an end cross column. The combined base is fixed to the top of the front bottom beam of the pod shell.

[0017] The utility model has the following beneficial effects:

[0018] 1. This jig is based on the product digital model of the aircraft refueling pod shell and adopts a structural form of segmented riveting and multi-segment docking combined assembly to realize the riveting of the pod shell, thereby ensuring the positioning and assembly accuracy, simplifying the positioning and assembly process, improving assembly efficiency, and ultimately ensuring product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is a three-dimensional diagram from the first perspective of the present invention.

[0021] Figure 2 This is a three-dimensional diagram from the second perspective of the present invention.

[0022] Figure 3 This is a three-dimensional diagram from the third perspective of the present invention.

[0023] Figure 4 This is a three-dimensional diagram from the fourth perspective of the present invention.

[0024] In the figure: support pad 1, longitudinal base 2, oblique reinforcement rod 3, column 4, top crossbeam 5, slide rail 6, slider 7, sliding bottom beam 8, push-pull handle 9, lateral fixing seat 10, short column 11, bottom crossbar 12, lower mounting seat 13, tail section lateral clamping plate 14, limit block 15, upper mounting seat 16, U-shaped connecting frame 17, first connecting plate 18, lower clamping plate mounting seat 19, lower clamping plate 20, rear section shell docking frame 21 , front section shell docking frame locator 22, integral positioning frame 23, column base 24, disc mounting seat 25, positioning disc 26, pod shell front section bottom beam 27, front section lateral clamping plate structure 28, pod shell tail section bottom beam 29, combined base 30, end plate 31, end cross column 32, lateral clamping plate seat 33, front section lateral clamping plate 34, second clamping plate seat 35, front section clamping plate 36, tail section lateral clamping plate structure 37. DETAILED DESCRIPTION

[0025] The embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0026] See also Figure 1-4A positioning riveting jig for an aircraft refueling pod shell comprises longitudinal bases 2 arranged in parallel, with upright posts 4 fixed on the top of the longitudinal bases 2, top cross beams 5 fixed on the tops of the upright posts 4 on both sides, a pod shell tail section bottom beam 29 and a pod shell front section bottom beam 27 fixed between the inner side walls of the longitudinal bases 2, a slide rail 6 fixed on the top of the pod shell tail section bottom beam 29, a sliding support assembly slidably installed on the top of the slide rail 6; a tail section lateral clamping plate structure 37 is installed between the outer wall of the pod shell tail section bottom beam 29 and the top cross beam 5; a plurality of front section lateral clamping plate structures 28 are fixed between the front section bottom beam 27 and the top cross beam 5 of the pod shell, and a front section shell docking frame locator 22 is fixedly installed on the front section lateral clamping plate structure 28 located at the end part. This jig is based on the product digital model of the aircraft refueling pod shell, and adopts a structural form of segmented riveting and multi-segment docking combined assembly to achieve the riveting of the pod shell, thereby ensuring the positioning and assembly accuracy, simplifying the positioning and assembly process, improving the assembly efficiency, and ultimately ensuring the quality of the product. Through the above-mentioned jig structure, during specific use, the sliding support assembly and the tail section lateral clamping plate structure 37 are used to position and support the tail section of the aircraft refueling pod shell, thereby ensuring its precise docking during the riveting process and effectively preventing its deformation during the riveting process; in addition, the front section lateral clamping plate structure 28 can be used to position and support the front section of the aircraft refueling pod shell, thereby ensuring its precise docking during the riveting process and effectively preventing its deformation during the riveting process; then, the entire jig ultimately ensures the precise docking between the riveted aircraft refueling pod shell tail section and the aircraft refueling pod shell front section.

[0027] Furthermore, oblique reinforcing rods 3 are fixed between the two sides of the column 4 and the longitudinal base 2. The oblique reinforcing rods 3 enhance the structural strength and stability of the column 4.

[0028] Furthermore, support pads 1 for horizontal adjustment are fixed to the four corners of the bottom of the longitudinal base 2. The support pads 1 facilitate stable support of the entire frame and facilitate height adjustment, thereby achieving a leveling effect.

[0029] Furthermore, a U-shaped connecting bracket 17 is fixed to the outer side of the middle portion between the nacelle shell's tail section bottom beam 29 and the top crossbeam 5. This U-shaped connecting bracket 17 enhances the structural integrity and reliability of the nacelle shell's tail section bottom beam 29 and top crossbeam 5. Furthermore, the jig is divided into a front section riveting area and a rear section riveting area, allowing the front and rear sections to be riveted simultaneously in different areas of the same jig. The jig's main frame utilizes a welded rigid frame structure. After welding, the entire structure undergoes a stress relief annealing process in a furnace to fully eliminate welding stress and improve dimensional stability.

[0030] Furthermore, the sliding support assembly includes a slider 7 slidably mounted on top of the slide rail 6. A sliding base beam 8 is fixed to the top of the slider 7. A lower card mounting seat 19 is symmetrically fixed to the top of the sliding base beam 8 via a first connecting plate 18. A lower card 20 is fixed to the top of the lower card mounting seat 19. The use of this sliding support assembly ensures that after the rear section of the aircraft refueling pod shell is riveted, the entire sliding base beam 8 can be easily pushed, thereby achieving precise docking between the rear section of the aircraft refueling pod shell and the front section of the aircraft refueling pod shell.

[0031] Furthermore, a push-pull handle 9 is fixed to one side of the top end of the sliding bottom beam 8. The sliding bottom beam 8 can be moved by the push-pull handle 9.

[0032] Furthermore, the slide rail 6 adopts a double slide rail structure arranged in parallel. The double slide rail structure ensures the stability of subsequent sliding.

[0033] Furthermore, the tail section lateral clamp structure 37 includes a plurality of lateral fixing seats 10 fixed on the outer side wall of the tail section bottom beam 29 of the pod shell. The top of the lateral fixing seat 10 is fixed with a bottom cross bar 12 via a short column 11. The top of the bottom cross bar 12 is fixed with a lower mounting seat 13. The top of the lower mounting seat 13 is fixed with a tail section lateral clamp 14. The top end of the tail section lateral clamp 14 is fixed to the bottom end of the top cross beam 5 via an upper mounting seat 16. The above-mentioned tail section lateral clamp structure 37 ensures reliable positioning during the subsequent riveting process of the aircraft refueling pod shell and prevents deformation during the subsequent riveting process. In specific use, the symmetrically arranged tail section lateral clamps 14 are used to achieve effective positioning of the skin.

[0034] Furthermore, a rear section shell docking frame 21 is fixed to the ends of the bottom crossbar 12 and the top crossbeam 5. The rear section shell docking frame 21 can be used in the subsequent docking process to position the end of the tail section of the aircraft refueling pod shell.

[0035] Furthermore, the front section lateral clamping plate structure 28 includes a second clamping plate seat 35 fixed to the top of the front section bottom beam 27 of the pod shell, a front section clamping plate 36 is fixed to the top of the second clamping plate seat 35, and a front section lateral clamping plate 34 is provided on both sides of the front section clamping plate 36. The two ends of the front section lateral clamping plate 34 are respectively fixed between the front section bottom beam 27 and the top cross beam 5 of the pod shell through the lateral clamping plate seats 33. The above-mentioned front section lateral clamping plate structure 28 can achieve reliable position limiting of the front section of the aircraft refueling pod shell and prevent its deformation during the subsequent riveting process.

[0036] Furthermore, an integral positioning frame 23 is fixed to the bottom end of the top crossbeam 5 on the side where the front section lateral clamping plate structure 28 is located; the above-mentioned integral positioning frame 23 can be used to locate the intersection point and oil port of the connection between the shell and the aircraft rack.

[0037] Furthermore, side panel positioning assemblies are symmetrically positioned directly below the integral positioning frame 23. These assemblies include positioning discs 26, which are secured to the top of disc mounts 25. Disc mounts 25 are secured to the outer wall of the pod's front bottom beam 27 via column bases 24. These side panel positioning assemblies ensure the positioning of the frame panels, ensuring the left and right side panels meet requirements for position, parallelism, relative perpendicularity, and coaxiality of the two holes.

[0038] Furthermore, a terminal frame positioning assembly is fixed to one end of the rear end of the front section bottom beam 27 of the pod housing. The terminal frame positioning assembly includes a terminal plate 31. The terminal plate 31 is fixed to the top of the combined base 30 via a terminal cross column 32. The combined base 30 is fixed to the top end of the front section bottom beam 27 of the pod housing. The terminal frame positioning assembly can be used to position the terminal of the front section of the pod housing.

[0039] Furthermore, each positioning component is digitally adjusted with high precision in large sizes by a laser tracker to improve assembly accuracy. Each adjustment support is provided with multiple adjustment screws and fastening screws, which can quickly and easily adjust its spatial posture. After adjustment, epoxy resin is filled in the gap at the bottom of the support and cast and cured, and positioning pins are used for positioning. The assembly tooling is regularly inspected and calibrated through digital-analog comparison and three-dimensional coordinate measurement of the positioning points. It has the advantages of complete functions, high positioning accuracy, good working stability, beautiful appearance, simple operation, and easy use.

[0040] Working process and principle of this utility model:

[0041] During specific use, first, the tail section of the aircraft refueling pod shell is positioned on the sliding support assembly and the tail section lateral clamping plate structure 37, and after it is positioned and clamped, it is riveted, thereby ensuring its precise docking during the riveting process and effectively preventing its deformation during the riveting process; the front section of the aircraft refueling pod shell is positioned on the front section lateral clamping plate structure 28, and after it is positioned and clamped, it is riveted, thereby ensuring its precise docking during the riveting process and effectively preventing its deformation during the riveting process; after the front section and the tail section are riveted into shape respectively, the tail section lateral clamping plate structure 37 of the tail section is released, and the sliding bottom beam 8 is moved, and the tail section and the front section are driven to dock and rivet through the sliding bottom beam 8, and finally the precise docking between the riveted tail section of the aircraft refueling pod shell and the front section of the aircraft refueling pod shell is ensured through the entire jig.

Claims

1. A positioning riveting jig for the shell of an aircraft refueling pod, characterized in that: The invention comprises longitudinal bases (2) arranged in parallel, wherein a column (4) is fixed on the top of the longitudinal base (2), and a top crossbeam (5) is fixed on the top of the columns (4) on both sides, a pod shell tail section bottom beam (29) and a pod shell front section bottom beam (27) are fixed between the inner side walls of the longitudinal base (2), a slide rail (6) is fixed on the top of the pod shell tail section bottom beam (29), and a slide support assembly is slidably installed on the top of the slide rail (6); a tail section side card structure (37) is installed between the outer wall of the pod shell tail section bottom beam (29) and the top crossbeam (5); a plurality of front section side card structures (28) are fixed between the pod shell front section bottom beam (27) and the top crossbeam (5), and a front section shell docking frame positioner (22) is fixedly installed on the front section side card structure (28) located at the end portion.

2. The aircraft refueling pod shell positioning riveting jig according to claim 1, characterized in that: Oblique reinforcement rods (3) are fixed between the two sides of the upright column (4) and the longitudinal base (2).

3. The aircraft refueling pod shell positioning riveting jig according to claim 1, characterized in that: Supporting foot pads (1) for horizontal adjustment are fixed to the four bottom corners of the longitudinal base (2).

4. The aircraft refueling pod shell positioning riveting jig according to claim 1, characterized in that: A U-shaped connecting frame (17) is fixed to the outer side of the middle portion of the pod shell tail section bottom beam (29) and the top cross beam (5).

5. The aircraft refueling pod shell positioning riveting jig according to claim 1, characterized in that: The sliding support assembly comprises a slider (7) slidably mounted on the top of the slide rail (6); a sliding bottom beam (8) is fixed to the top of the slider (7); a lower card mounting seat (19) is symmetrically fixed to the top of the sliding bottom beam (8) via a first connecting plate (18); and a lower card (20) is fixed to the top of the lower card mounting seat (19).

6. The aircraft refueling pod shell positioning riveting jig according to claim 5, characterized in that: A push-pull handle (9) is fixed to one side of the top end of the sliding bottom beam (8); The slide rail (6) adopts a double slide rail structure arranged in parallel.

7. The aircraft refueling pod shell positioning riveting jig according to claim 1, characterized in that: The tail section lateral clamping plate structure (37) includes a plurality of lateral fixing seats (10) fixed on the outer side wall of the tail section bottom beam (29) of the pod shell, the top of the lateral fixing seat (10) is fixed with a bottom cross bar (12) through a short column (11), the top of the bottom cross bar (12) is fixed with a lower mounting seat (13), the top of the lower mounting seat (13) is fixed with a tail section lateral clamping plate (14), and the top end of the tail section lateral clamping plate (14) is fixed to the bottom end of the top cross beam (5) through an upper mounting seat (16); A rear shell docking frame (21) is fixed to the ends of the bottom crossbar (12) and the top crossbeam (5).

8. The aircraft refueling pod shell positioning riveting jig according to claim 1, characterized in that: The front section lateral card plate structure (28) comprises a second card plate seat (35) fixed to the top of the front section bottom beam (27) of the pod shell, a front section card plate (36) is fixed to the top of the second card plate seat (35), front section lateral card plates (34) are provided on both sides of the front section card plate (36), and both ends of the front section lateral card plate (34) are respectively fixed between the front section bottom beam (27) and the top cross beam (5) of the pod shell through the lateral card plate seats (33).

9. The aircraft refueling pod shell positioning riveting jig according to claim 1, characterized in that: An integral positioning frame (23) is fixed to the bottom end of the top crossbeam (5) on the side where the front section lateral clamping plate structure (28) is located; A side plate positioning assembly is symmetrically arranged directly below the integral positioning frame (23), and the side plate positioning assembly includes a positioning disc (26). The positioning disc (26) is fixed on the top of the disc mounting seat (25), and the disc mounting seat (25) is fixed to the outer wall of the front bottom beam (27) of the pod shell through the column base (24).

10. The aircraft refueling pod shell positioning riveting jig according to claim 1, characterized in that: An end frame positioning assembly is fixed to one end of the tail portion of the front bottom beam (27) of the pod shell. The end frame positioning assembly includes an end plate (31). The end plate (31) is fixed to the top of the combined base (30) through an end cross column (32). The combined base (30) is fixed to the top of the front bottom beam (27) of the pod shell.

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