A vertical jig for aircraft aft cargo door assembly

Abstract

The utility model discloses a vertical type frame for aircraft rear cabin door assembly, including type frame main part, and type frame main part includes chassis and rectangular stand, and the middle of rectangular stand is equipped with a plurality of stands, and the periphery of rectangular stand and stand all are equipped with a plurality of first hole positioner, the side of stand is fixed with 3 appearance clamping plate, and a plurality of cutting edge is set on appearance clamping plate and is relied on mould, be equipped with the detachable cabin door size inspection block on type frame main part, the utility model discloses through vertical structure, multistage positioning system, modular inspection tool and stability optimization design, realizes the overall promotion of rear cabin door assembly precision, efficiency, security and economy, shortens single aircraft rear cabin door assembly cycle, and reduces comprehensive cost.

Description

Technical Field

[0001] This utility model relates to the field of aircraft assembly technology, and in particular to a vertical frame for assembling aircraft rear cabin doors. Background Technology

[0002] During aircraft assembly, the assembly precision of the rear cargo door directly impacts the aircraft's aerodynamic performance and structural safety. However, existing rear cargo door assembly jigs mostly employ a horizontal structure design, which presents the following problems:

[0003] 1. Inaccurate positioning: Traditional horizontal structural frames are difficult to position precisely during assembly, which makes it difficult to guarantee the assembly accuracy of the rear hatch, potentially leading to a decrease in aerodynamic performance or structural safety hazards.

[0004] 2. Inconvenient operation: The horizontal structure frame has limited operating space, and assembly personnel need to frequently adjust their posture when performing complex operations, which increases the difficulty of operation and labor intensity.

[0005] 3. Difficulty in removing from the stand: After assembly, the process of removing the rear hatch from the jig is cumbersome, which is not only time-consuming and labor-intensive, but may also damage the completed parts, seriously affecting the assembly efficiency. Utility Model Content

[0006] To address the aforementioned problems, this utility model provides a vertical frame for assembling aircraft rear cabin doors, which improves assembly accuracy, simplifies operation, and facilitates removal from the frame.

[0007] Therefore, the technical solution of this utility model is: a vertical frame for assembling aircraft rear cabin doors, including a frame body, the frame body including a base frame and a rectangular frame, a number of columns are provided in the middle of the rectangular frame, and a number of first hole locators are provided around the rectangular frame and on the columns; three shape plates are fixed on the side of the columns, and multiple cutting edge templates are provided on the shape plates; a detachable cabin door size inspection block is provided on the frame body.

[0008] Based on the above scheme and as a preferred embodiment of the above scheme: the first hole locator is divided into an ear hole locator and an intersection hole locator. The ear hole locator is set above, on the left and right sides and below the frame, and the intersection hole locator is set on the column.

[0009] Based on the above scheme and as a preferred embodiment of the above scheme: the first hole positioner includes a positioning seat, a locking rod and a locking sleeve. The positioning seat is provided with a positioning hole, the locking rod is inserted into the positioning hole, and the locking sleeve can be locked and fixed with the locking rod.

[0010] Based on the above scheme and as a preferred embodiment of the above scheme: the upper and lower ends of the outer plate are provided with mounting holes, which are respectively installed on the upper and lower crossbeams of the rectangular frame through the second hole locator.

[0011] Based on the above scheme and as a preferred embodiment of the above scheme: the edge trimming template includes a clean edge trimming template, a 2mm edge trimming template, and a 5mm edge trimming template.

[0012] Based on the above scheme and as a preferred embodiment of the above scheme: the rectangular upright is fixed on the base frame and is provided with diagonal bracing rods; the base frame is provided with adjustable anchor bolts.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. Through the vertical frame structure design, combined with the lug hole positioner (distributed on the top, left and right and bottom of the frame) and the intersection hole positioner (position tolerance ±0.05mm), the rear hatch is positioned in a multi-dimensional coordinated manner, which improves the assembly accuracy to within ±0.1mm and effectively ensures the continuity of aerodynamic shape and structural safety.

[0015] 2. Using the clean edge, 2mm, and 5mm trimming templates set on the shape template, guide the skin trimming in stages to reduce manual trimming errors and ensure that the gap between the skin and the frame is controlled within the 3mm design range.

[0016] 3. The vertical structure allows the rear hatch to be assembled in a vertical position, enabling operators to complete positioning, repair and other processes on the same horizontal plane, reducing the frequency of posture adjustment and reducing labor intensity; the hatch size inspection block is installed through quick-release pins, supporting quick switching between 5mm, 2mm and clean edge inspection functions, simplifying the quality verification process and shortening the time for a single inspection.

[0017] 4. After the rear hatch is assembled, the outer clamp is removed, and the rear hatch is moved directly out from one side of the outer clamp, avoiding the risk of hatch deformation caused by traditional hoisting and greatly shortening the unloading time.

[0018] 5. Through vertical structure, multi-level positioning system, modular inspection tools and stability optimization design, the assembly accuracy, efficiency, safety and economy of the rear cabin door are comprehensively improved, the assembly cycle of the rear cabin door of a single aircraft is shortened and the overall cost is reduced. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a structural schematic diagram of the present invention (from another angle);

[0021] Figure 3 This is a schematic diagram of the ear hole positioner of this utility model;

[0022] Figure 4This is a schematic diagram of the structure of the cutting edge template of this utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the hatch size inspection block of this utility model;

[0024] Figure 6 This is a diagram showing the usage state of this utility model;

[0025] Figure 7 This is a diagram showing the usage state of this utility model (from another angle).

[0026] The components marked in the diagram are: frame body 1, base frame 11, rectangular upright 12, diagonal brace 13, adjustable anchor bolt 14, crossbeam 15, column 16, ear hole locator 2, positioning seat 21, locking rod 22, locking sleeve 23, intersection hole locator 3, external shape plate 4, second hole locator 5, clean edge trimming template 61, 2mm trimming template 62, 5mm trimming template 63, dimensional inspection block 7, rear hatch 8. Detailed Implementation

[0027] In the description of this utility model, it should be noted that the directional terms such as "center", "horizontal (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. They should not be construed as limiting the specific protection scope of this utility model.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Thus, the use of "first" and "second" to define a feature may explicitly or implicitly include one or more of that feature. In the description of this utility model, "several" or "a number" means two or more, unless otherwise explicitly specified.

[0029] See the attached drawings. The vertical frame for assembling aircraft rear cabin doors described in this embodiment includes a frame body 1. The frame body 1 has an overall vertical structure and is removed from the side after assembly for easy operation. The frame body 1 is made of high-strength steel to ensure the rigidity and strength of the frame. The frame body 1 includes a base frame 11 and a rectangular upright frame 12. The rectangular upright frame 12 is fixed to the base frame 11 and is equipped with diagonal braces 13, which increase the overall rigidity of the rectangular upright frame 12 and can support the assembly requirements of larger tonnage cabin doors. Adjustable anchor bolts 14 are provided below the base frame 11, supporting ±30mm height adjustment to adapt to differences in workshop floor unevenness and ensure that the frame installation levelness error is ≤0.1mm.

[0030] The rectangular support frame 12 is provided with a crossbeam 15 at the top and bottom, and several columns 16 are provided in the middle of the rectangular support frame 12; multiple ear hole locators 2 are provided around the rectangular support frame 12. The ear hole locators 2 are located above, on the left and right sides and below the frame body, and are used to locate the ear holes of the rear hatch 8, thereby ensuring assembly accuracy.

[0031] The ear hole positioner 2 includes a positioning seat 21, a locking rod 22, and a locking sleeve 23. The positioning seat 21 is provided with a positioning hole. The locking rod 22 is inserted into the positioning hole, and the ear hole of the rear hatch 8 is fitted onto the locking rod 22. Then, the locking sleeve 23 is locked and fixed to the locking rod 22, thereby positioning the rear hatch 8.

[0032] The column 16 is also equipped with several intersection hole locators 3 for locating the intersection holes of the rear hatch 8, with a positional accuracy requirement of ±0.05mm. The intersection hole locator 3 is similar in structure to the lug hole locator 2, and will not be described in detail.

[0033] Three external clamping plates 4 are fixed to the side of the column 16. The external clamping plates 4 have mounting holes at the upper and lower ends, and are respectively installed on the upper and lower crossbeams of the rectangular frame 12 through second hole locators 5. The second hole locators 5 are similar in structure to the ear hole locators, and will not be described in detail. The gap between the external clamping plates 4 and the product is 3mm, and a 0-3mm inspection block is provided for inspecting the assembly gap.

[0034] The outer profile plate 4 is equipped with a clean edge trimming template 61, a 2mm trimming template 62, and a 5mm trimming template 63 to facilitate skin fitting, guide skin fitting in stages, reduce manual trimming errors, and ensure that the gap between the skin and the frame is controlled within the 3mm design range. The frame body 1 is equipped with a detachable hatch size inspection block 7 for inspecting 5mm, 2mm, and clean edges. The inspection block is clearly marked for easy differentiation.

[0035] During assembly:

[0036] 1) Use the ear hole locator 2 and the intersection hole locator 3 to fix the rear hatch 8 to the frame body 1 to ensure assembly accuracy;

[0037] 2) The rear hatch skin is fitted using the shape plate 4 and the size inspection block 7 to ensure that the fit between the skin and the frame meets the requirements;

[0038] 3) After assembly, remove the outer shape plate 4 and use a lifting device to remove the rear hatch 8 from the side of the frame (the side where the original outer shape plate was located) to complete the assembly.

[0039] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A vertical frame for assembling aircraft rear cabin doors, characterized in that: The frame includes a main body, which consists of a base frame and a rectangular upright frame. Several columns are provided in the middle of the rectangular upright frame, and several first hole locators are provided around the rectangular upright frame and on the columns. Three shape plates are fixed on the side of the columns, and multiple cutting edge templates are provided on the shape plates. The frame is equipped with a detachable hatch size inspection block.

2. The vertical frame for assembling aircraft rear cabin doors as described in claim 1, characterized in that: The first hole locator is divided into an ear hole locator and an intersection hole locator. The ear hole locator is located above, on the left and right sides and below the frame, and the intersection hole locator is located on the column.

3. The vertical frame for assembling aircraft rear cabin doors as described in claim 1, characterized in that: The first hole positioner includes a positioning seat, a locking rod, and a locking sleeve. The positioning seat has a positioning hole, the locking rod is inserted into the positioning hole, and the locking sleeve can be locked and fixed with the locking rod.

4. The vertical frame for assembling aircraft rear cabin doors as described in claim 1, characterized in that: The outer plate has mounting holes at its upper and lower ends, which are respectively installed on the upper and lower crossbeams of the rectangular frame through the second hole locator.

5. A vertical frame for assembling aircraft rear cabin doors as described in claim 1, characterized in that: The edge trimming templates include a clean edge trimming template, a 2mm edge trimming template, and a 5mm edge trimming template.

6. A vertical frame for assembling aircraft rear cabin doors as described in claim 1, characterized in that: The rectangular upright is fixed to the base frame and is equipped with diagonal bracing; adjustable anchor bolts are provided below the base frame.

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