Aircraft pylon access door damage prevention tool and process disassembly method

Abstract

The present application relates to a kind of aircraft hanging point mouth cover damage prevention tool and process dismounting method, belong to process equipment design and manufacturing technical field.The present application can be effectively realized by a fixed support point and a movable support point, the positioning of the lower surface zero point of wing, the lower surface part of wing is adhered to the lower surface of wing using the handle of both sides of tool, displacement is prevented, the use of tool can avoid the damage of the fixed hole of lower surface part of wing, realize the stable positioning of the lower surface part of wing, at the same time, the operator on the upper surface of wing does not have to be caused by the lower surface part of wing not fixed firmly, the operator on the upper surface of wing cannot effectively use force, cause the wing scratch and other problems, ensure the surface quality of aircraft, improve aircraft appearance surface qualification rate.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of aircraft hanging point cover damage prevention tool and process dismounting method, belong to process equipment design and manufacturing technical field. BACKGROUND

[0002] Because the upper surface cover (see attached Figure 1 1) and the lower surface part (see attached Figure 1 2) of wing are assembled into one by bolt (see attached Figure 1 3), for ensuring the closure of upper and lower surface of aircraft wing, therefore, when dismounting, because there is no fixed point, dismounting force is large, it is easy to cause the fixed hole of lower surface part, lower part body, upper cover and upper and lower wing surface damage, the existing dismounting method is, using spring clamp to fix the lower surface part (see attached Figure 1 2) of wing, because the upward pushing force of spring clamp is limited, cannot effectively fix the lower surface part of wing, this method not only exists dismounting efficiency low, extremely easy to cause the fixed hole damage of lower surface part due to the up and down movement of part, finally, lead to low installation efficiency of cover, cover and surrounding wing surface because spring clamp cannot effectively fix the part, cause spring clamp to come out of the fixed hole of lower surface part of wing, thereby causing the scratch of lower surface part of wing and the damage of lower skin, simultaneously, because bolt cannot effectively bear force, will cause the cutter cannot effectively screw bolt, cause the damage of upper surface cover of wing and the skin around upper part of wing, urgently need to be solved. SUMMARY

[0003] The technical problem to be solved by the present application is to provide an efficient aircraft wing lower part positioning method, which can effectively position the lower surface zero point of the wing by one fixed support point and one movable support point, and prevent displacement by using the handles on both sides of the tool to adhere the lower surface part to the lower surface of the wing. The use of the tool can avoid damage to the fixed hole of the lower surface part of the wing, and stably position the lower surface part of the aircraft. Meanwhile, the operator on the upper part of the wing does not need to worry about the instability of the lower surface part of the aircraft, which can cause the operator on the upper surface of the wing to use force effectively, causing scratches on the wing, ensuring the surface quality of the aircraft, and improving the qualified rate of the appearance surface of the aircraft.

[0004] To solve the above problems, the specific technical solutions of the present application are as follows:

[0005] A method for dismounting and mounting a cover of an aircraft hanging point, comprising the following steps:

[0006] Firstly, a special hanging point dismounting and mounting tool is used, as shown in Figure 3Position the fixing holes of the wing lower surface parts. Use the auxiliary handles on both sides of the tool to fit the wing lower surface parts against the wing lower surface to prevent displacement. Finally, use the above-mentioned special attachment point removal and fixing tool to fix the wing lower surface parts in the correct position to meet the frontal and rearward airflow requirements of the aircraft wing lower surface. The operator on the upper part of the wing uses a knife to install the attachment point cover.

[0007] During disassembly, the fixing holes of the parts on the lower surface of the wing are first positioned. The auxiliary handles on both sides of the tool are used to attach the parts on the lower surface of the wing to the lower surface of the wing. Then, the operator on the lower part of the wing uses both hands to push the auxiliary handles upward, while the operator on the upper part of the wing uses a cutting tool to unscrew the bolts. Finally, the parts on the lower surface of the wing and the cover on the upper surface of the wing are removed.

[0008] The specific method is as follows:

[0009] Step 1.1: Using a specialized aircraft mounting point cover damage prevention positioning tool, visually align the distance between the fixed support points and the fixing holes on the two wing underside parts. Adjust the center distance between the fixed and adjustable support points in the aircraft mounting point cover damage prevention positioning tool to match the distance between the fixing holes on the wing underside parts. Secure the adjustable support point by using a hand-tightening nut in conjunction with the lower threaded rod on the adjustable support point and the fixing nut welded to the adjustable support point.

[0010] Step 1.2: First, place the wing underside parts into the wing shaft holes. Using a special aircraft attachment point cover anti-damage positioning tool, hold the auxiliary handle and insert the fixed support point and adjustable fixed support point into the fixing holes of the wing underside parts. Rotate the auxiliary handles on both sides of the aircraft attachment point cover anti-damage positioning tool to adjust the wing underside parts to be flush with the wing.

[0011] Step 1.3: On the lower part of the wing, the operator holds the auxiliary handle upward with both hands, while on the upper part of the wing, the operator passes the bolt through the cover on the upper surface of the wing and uses a screwdriver to tighten the bolt until the cover on the upper surface of the wing is flush with the upper surface of the wing.

[0012] To remove the cover, follow the reverse steps described above:

[0013] Step 2.1: Adjust the center distance between the fixed support and the adjustable support in the aircraft mounting cover damage prevention positioning tool to match the distance between the fixing holes on the lower surface of the wing parts. Secure the adjustable support by using a hand-tightening nut in conjunction with the lower threaded rod on the adjustable support and the fixing nut welded to the adjustable support as a whole.

[0014] Step 2.2: On the lower part of the wing, the operator uses both hands to push the auxiliary handle upwards to prevent the parts on the lower surface of the wing from shifting. On the upper part of the wing, the operator uses a cutting tool to unscrew the bolts on the upper part of the wing.

[0015] Step 2.3: Remove the cover on the upper surface of the wing and the parts on the lower surface of the wing.

[0016] The aforementioned aircraft mounting point cover damage prevention and positioning tool comprises seven parts: a support base with a protective pad, a fixed support point, an adjustable fixed support point, a hand-tightening nut, and threaded auxiliary handles. The protective pad, with grooves and holes, is fixed to the support base using adhesive. The fixed support point is welded to the support base. The adjustable fixed support point and the fixed nut are welded to the adjustable fixed support point. The lower part of the adjustable fixed support point has threads; tightening the hand-tightening nut secures the device by engaging the threads with the support base. The two auxiliary handles are welded to the support base.

[0017] The working principle of this special high-efficiency aircraft mounting point cover anti-damage positioning tool is as follows: First, adjust the adjustable fixing point and the distance between the fixing points to be equal to the fixing holes of the two wing lower surface parts. Tighten the nuts by hand through the threads, insert the adjustable fixing point and the fixing point into the fixing holes of the lower surface parts, and use the auxiliary handles on both sides to fix the wing lower surface parts to the correct position. Then, use the unscrew cutter to remove the bolts for installing and removing the wing upper surface cover until the wing upper surface cover is installed flush with the wing upper surface or the wing upper surface cover and wing lower surface parts are removed, and then put the tool back into the toolbox.

[0018] Advantages of this invention:

[0019] Because of the ingenious design of the special high-efficiency aircraft attachment point cover anti-damage positioning tool, which uses a special aircraft attachment point cover anti-damage positioning tool, it not only ensures that the fixing holes of the parts on the lower surface of the aircraft wing and the upper and lower wing surfaces are not damaged, but also greatly improves the efficiency of aircraft attachment point cover disassembly and installation, while reducing the labor intensity of the operator. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the wing hardpoint cover installation;

[0021] Figure 2 This is a partial schematic diagram of a component on the lower surface of the wing;

[0022] Figure 3 This is a front view of a tool for removing aircraft hardpoint cover.

[0023] Figure 4 This is a top view of a tool for removing aircraft hardpoint cover;

[0024] Figure 5 This is a schematic diagram of the disassembly tool for aircraft hardpoint covers and the installation of parts on the lower surface of the wing;

[0025] Figure 6 This is a schematic diagram showing the partial dimensions of a component on the lower surface of the wing;

[0026] Figure 7 is a size diagram of an aircraft hanging point cover dismounting tool;

[0027] Figure 8 is a front view of an adjustable fixed support point and hand nut part of an aircraft hanging point cover dismounting tool;

[0028] Figure 9 is a partial view of a support pedestal and adjustable support point of an aircraft hanging point cover dismounting tool;

[0029] Figure 10 is a partial view of a support pedestal of an aircraft hanging point cover dismounting tool;

[0030] Figure 11 is a screw rod diagram;

[0031] Figure 12 is a fixed nut diagram;

[0032] Figure 13 is a hand nut.

[0033] Figure notes: 1. upper surface cover of a wing; 2. lower surface part of a wing; 3. bolt; 5. wing shaft hole; 6. fixed hole; 7. fixed support point; 8. adjustable fixed support point; 9. hand nut; 10. threaded rod; 11. auxiliary handle; 12. support pedestal; 13. protective pad; 14. connection part; 21. fixed nut; 22. self-made plug; 23. screw rod a; 24. screw rod b. DETAILED DESCRIPTION

[0034] Example 1:

[0035] An aircraft hanging point cover damage prevention dismounting method; the steps are as follows

[0036] Step 1.1, apply the special aircraft hanging point cover damage prevention positioning tool to fix the distance between the fixed support points 7 of the two lower surface parts of the wing fixed holes 6, adjust the distance between the center points of the fixed support points 7 and the adjustable fixed support points 8 in the aircraft hanging point cover damage prevention positioning tool and the fixed holes 6 of the lower surface parts of the wing to match by the adjustable fixed support points 8, and fix the adjustable fixed support points by the hand nut 9, the lower threaded rod 10 on the adjustable fixed support point, and the fixed nut 21 welded with the adjustable fixed support point.

[0037] Step 1.2, first place the lower surface part of the wing 2 into the wing shaft hole 5, apply the special aircraft hanging point cover damage prevention positioning tool to insert the fixed support points 7 and the adjustable fixed support points 8 into the fixed holes 6 of the lower surface parts of the wing by holding the auxiliary handle 11, and adjust the lower surface part of the wing 2 to be flush with the wing by rotating the auxiliary handles 11 on both sides of the aircraft hanging point cover damage prevention positioning tool.

[0038] Step 1.3, the operator at the lower wing uses both hands to push up the auxiliary handle 11, and the operator at the upper wing passes the bolt 3 through the upper surface of the wing cover 1, and uses the wrench to tighten the bolt 3 until the upper surface of the wing cover 1 is flush with the upper surface of the wing.

[0039] The above steps are reversed to disassemble the cover.

[0040] Step 2.1, adjust the distance between the center points of the adjustable fixed support point 8 and the fixed support point 7 and the distance between the fixed hole 6 of the lower surface of the wing part and the adjustable fixed support point 8, and use the hand-tightened nut 9, the lower threaded rod 10 on the adjustable fixed support point, and the fixed nut 21 welded to the adjustable fixed support point to fix the adjustable fixed support point.

[0041] Step 2.2, the operator at the lower wing uses both hands to push up the auxiliary handle 11 to prevent displacement of the lower surface of the wing part 2, and the operator at the upper wing uses the wrench to loosen the bolt 3 on the upper wing.

[0042] Step 2.3, remove the upper surface of the wing cover 1 and the lower surface of the wing part 2.

[0043] The aircraft hanging point cover damage prevention positioning tool comprises a support pedestal 12 with a protective pad 13, a fixed support point 7, an adjustable fixed support point 8, a hand-tightened nut 9, a threaded rod 10, and an auxiliary handle 11. The protective pad 13 with grooves and holes is fixed to the support pedestal 12 by adhesive, the fixed support point is welded to the support pedestal 12, the adjustable fixed support point and the fixed nut 21 are welded to the adjustable fixed support point, the lower part of the adjustable fixed support point is threaded, the hand-tightened nut 9 is tightened, and the support pedestal is fastened through the thread on the hand-tightened nut 9. The two auxiliary handles are welded together with the support pedestal.

[0044] The working principle of the special high-efficiency aircraft hanging point cover damage prevention positioning tool is as follows: first, adjust the distance between the adjustable fixed support point 8 and the fixed support point 7 to be equal to the distance between the two fixed holes 6 of the lower surface of the wing part, insert the adjustable fixed support point 8 and the fixed support point 7 into the fixed holes 6 of the lower surface of the wing part by tightening the hand-tightened nut 9, fix the lower surface of the wing part to the correct position using the two auxiliary handles 11, then use the wrench to disassemble the bolt 3 for installing and disassembling the upper surface of the wing cover until the upper surface of the wing cover is installed flush with the upper surface of the wing or the upper surface of the wing cover and the lower surface of the wing part are disassembled, and the tool is put back into the tool box.

[0045] Example 2:

[0046] The wing under surface part of the embodiment is the bottom diameter of 95mm (different models will be between 90-100mm), the center distance of two fixed holes 6 is 25mm (different models will be between 20mm-30mm), the schematic diagram of the main size of the wing under surface part during disassembly is shown in the attached Figure 6 , the schematic diagram of the main size of the special aircraft hanging point disassembly tool is shown in the attached Figure 7 , the attached Figure 8 . In this embodiment, the aircraft hanging point cover disassembly tool has adjustable fixed support point 8 and hand screw nut 9. The hand screw nut 9 is a standard part with M8 public diameter size, 304 stainless steel material, 1.25mm pitch. Screw rod b24 is a standard part with M8 public diameter size, 304 stainless steel material, 1.25mm pitch, 30mm length. The lower part has a hole with 5mm diameter, 8mm depth, 1.25mm pitch. The hole is installed with a special self-made plug 22 coated with anaerobic glue. The upper part of the plug 22 is screw rod a23 with 5mm public diameter size, 1.25mm pitch. The lower part is a part with 10mm diameter, 3mm thickness, which is integrated with the plug screw rod, used to prevent the hand screw nut 9 from falling off after loosening. On the upper part of the screw rod b24, a fixed nut 21 with M8 public diameter size, 6.2mm thickness, 12.9mm opposite side length is installed to prevent it from falling off in the 8.5mm wide, 20mm long groove of the support pedestal 12. The upper part of the screw rod b24 is welded with adjustable fixed support point 8 with 3mm diameter, 6mm length.

[0047] The support pedestal has a support pedestal with 60mm length, 30mm width on the upper part. The upper half has a groove with 20mm length, 14mm width, 6.5mm thickness and a groove with 20mm length, 8.5mm width, 14mm thickness. The upper part is welded with fixed support point 7 with 3mm diameter, 6mm length. A protective pad 13 made of rubber with 3mm thickness and a hole with 3mm diameter and a hole with 20mm length, 14mm width is attached above the support pedestal to avoid the fixed support point. The protective pad is used to prevent the tool from being ground between the wing under surface part and the wing. The support pedestal is welded with auxiliary handle 11 through connecting part 14 on both sides.

[0048] The disassembly operation method of the embodiment is as follows. First, the distance between the adjustable fixed support point and the hole in the fixed support point is adjusted to be equal to the distance between the fixed hole 6 of the wing under part, then the adjustable fixed support point and the fixed support point are inserted into the fixed hole of the wing under part to fix the aircraft under part, the wing under part is adjusted to be flush with the wing under surface, then the wing part is installed or disassembled by using the cutter. (If the wing under part is disassembled, the relevant parts are collected.) After the work is completed, the tool is put back into the tool box.

[0049] The embodiment can ensure that the upper surface cover of the wing, the lower surface part of the wing and the lower surface of the wing are not damaged, and the dismounting efficiency is at least 3 times higher than that of the existing dismounting and mounting method.

Claims

1. A method for preventing damage during the installation and removal of aircraft hardpoint covers, characterized in that, The steps are as follows: Step 1: Use the aircraft mounting point cover anti-damage positioning tool to position the fixing hole (6) of the wing lower surface part. The auxiliary handles (11) on both sides of the tool will fit the wing lower surface part against the wing lower surface to prevent displacement. Use the special mounting point disassembly and fixing tool to fix the wing lower surface part in the correct position so as to meet the frontal and rearal requirements of the aircraft wing lower surface. The operator on the upper part of the wing will install the mounting point cover by using a knife. Step 2: When disassembling, first position the fixing holes (6) of the parts on the lower surface of the wing, use the auxiliary handles (11) on both sides of the tool to attach the parts (2) of the lower surface of the wing to the lower surface of the wing, then the operator on the lower part of the wing uses both hands to push the auxiliary handles (11) upwards, and the operator on the upper part of the wing uses a knife to unscrew the bolts (3), and then remove the parts (2) of the lower surface of the wing and the cover (1) of the upper surface of the wing; The first step, as described above, is performed as follows: Step 1.1: Using a dedicated aircraft mounting point cover anti-damage positioning tool, visually measure the distance between the fixed support point (7) and the fixing holes (6) of the two wing lower surface parts. Adjust the distance between the center points of the fixed support point (7) and the adjustable fixed support point (8) in the aircraft mounting point cover anti-damage positioning tool to match the distance between the fixing holes (6) of the wing lower surface parts. Use the hand-tightening nut (9) to fix the adjustable fixed support point with the lower threaded rod (10) on the adjustable fixed support point and the fixing nut (21) that is welded together with the adjustable fixed support point. Step 1.2 First, place the lower surface part (2) of the wing into the wing shaft hole (5). Using a special aircraft mounting point cover anti-damage positioning tool, hold the auxiliary handle (11) and insert the fixed support (7) and adjustable fixed support (8) into the fixing hole (6) of the lower surface part of the wing. Rotate the auxiliary handles (11) on both sides of the aircraft mounting point cover anti-damage positioning tool to adjust the lower surface part (2) of the wing to be flush with the wing. Step 1.3: The operator at the lower part of the wing holds the auxiliary handle (11) upward with both hands, while the operator at the upper part of the wing passes the bolt (3) through the cover (1) on the upper surface of the wing and uses a scissor to tighten the bolt (3) until the cover (1) on the upper surface of the wing is flush with the upper surface of the wing.

2. The method for preventing damage during installation and removal of aircraft attachment point covers as described in claim 1, characterized in that, The second step, as described above, is performed as follows: Step 2.1: Adjust the distance between the center points of the fixed support point (7) and the adjustable fixed support point (8) in the aircraft mounting point cover anti-damage positioning tool to match the distance between the fixed holes (6) on the lower surface of the wing parts; use the hand-tightening nut (9) to fix the adjustable fixed support point in conjunction with the lower threaded rod (10) on the adjustable fixed support point and the fixed nut (21) welded together with the adjustable fixed support point; In step 2.2, the operator on the lower part of the wing uses both hands to push the auxiliary handle (11) upward to prevent the parts (2) on the lower surface of the wing from shifting, while the operator on the upper part of the wing uses a scissor to unscrew the bolts (3) on the upper part of the wing. Step 2.3 Remove the cover (1) on the upper surface of the wing and the parts (2) on the lower surface of the wing.

3. The method for preventing damage during installation and removal of aircraft hardpoint covers as described in claim 1, characterized in that, The aforementioned aircraft mounting point cover anti-damage positioning tool includes: a support base (12) with a protective pad (13), a fixed support point (7), an adjustable fixed support point (8), a hand-tightening nut (9), a threaded rod (10), and an auxiliary handle (11); the protective pad (13) with grooves and holes is fixed to the support base (12) with adhesive, the fixed support point is welded to the support base (12), the adjustable fixed support point is welded to the fixed nut (21), the adjustable fixed support point has threads at the bottom, the hand-tightening nut (9) is tightened, and the screw threads on the hand-tightening nut (9) are used to fasten the support base; the two auxiliary handles are welded to the support base.

4. A method for preventing damage during installation and removal of aircraft hardpoint covers as described in any one of claims 1-3, characterized in that, The distance between the adjustable fixed support point (8) and the fixed support point (7) is equal to the fixing holes (6) of the two wing lower surface parts.

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