Airplane covering cap sealing device

Abstract

The utility model relates to the technical field of airplane outer surface sealing, in particular to an airplane covering cap sealing device which comprises a screw rod, a nut and a quick-release connector. A hexagonal rod is arranged at the upper end of the screw, a thread part is arranged at the lower end of the screw, and threads are matched with an airtight supporting plate nut on the mouth frame; a limiting step is arranged at the lower position of the thread part and is used for limiting the tightening length of the screw rod on the airtight supporting plate nut; the upper end of the nut is provided with a hexagonal part, and the lower end is provided with double lugs; the nut is matched with the thread part at the lower end of the screw rod; a hexagonal rod is arranged at the upper end of the quick-release connector; the lower end of the quick-release connector is hollow, an inner hexagonal hole is formed in the lowermost end of the quick-release connector and matched with the hexagonal portion at the upper end of the nut, and the quick-release connector can be downwards arranged on the hexagonal portion at the upper end of the nut in a sleeving mode on the threaded rod and used for quickly tightening or disassembling the nut. The sealing glue can be prevented from entering the nut hole of the airtight supporting plate, and the vulcanization forming quality of the sealing glue can be improved.

Description

Technical Field

[0001] This utility model relates to the field of aircraft exterior sealing technology, specifically an aircraft door cover sealing device. Background Technology

[0002] Aircraft have numerous access panels of various shapes and sizes for installing equipment or inspecting the operation of internal systems. During installation, the access panels must be waterproofed and sealed to ensure the safety and reliability of the finished product installed inside the access panel compartment.

[0003] Currently, there are no special tools for waterproofing and sealing aircraft hatches. The existing waterproofing and sealing process is as follows: First, sealant is manually applied between the hatch and the hatch frame. Then, the hatch is installed on the hatch frame using screws and airtight bracket nuts on the hatch frame. After ensuring that the step difference between the hatch and the skin meets the technical requirements, the screws on the hatch are tightened to press the hatch onto the hatch frame, allowing the sealant between the hatch and the hatch frame to naturally vulcanize and form. Finally, the hatch is removed, and any remaining sealant on the hatch and in the holes of the airtight bracket nuts is cleaned.

[0004] However, the existing technology has the following problems: First, the sealant can easily be carried into the hole of the airtight support plate nut along with the screw. After the sealant enters the support plate nut and cures, it is not easy to clean. If it is not cleaned properly, the subsequent installation screws are likely to break through the rubber sealing sleeve at the top of the airtight support plate nut, resulting in poor waterproof sealing quality of the cap. Second, by tightening the screws on the cap to press it down, the cap has a small force-bearing area, which can easily lead to uneven curing thickness of the sealant, which will also have an adverse effect on the waterproof sealing effect of the cap. Summary of the Invention

[0005] To overcome the shortcomings of existing technologies, this utility model provides an aircraft hatch sealing device. By pre-installing a screw with a limiting step on the airtight support plate nut on the hatch frame, it can prevent sealant from entering the airtight support plate nut hole, thereby avoiding the need to clean residual sealant in the airtight support plate nut hole. The limiting step on the screw fits against the hatch frame, which can limit the tightening length and ensure that the airtight sleeve on the airtight support plate nut is not damaged. Moreover, the limiting step can ensure that the roundness and size of the sealant around the bolt hole are uniform. With the action of tightening the nut on the outer surface of the hatch, the hatch has a large and uniform force-bearing area, which can improve the vulcanization molding quality of the sealant.

[0006] The technical solution of this utility model is:

[0007] An aircraft door cover sealing device includes a screw, a nut, and a quick-release connector;

[0008] The upper end of the screw is provided with a hexagonal rod; the lower end of the screw is a threaded part, which matches the airtight support plate nut on the mouth frame; a limiting step is provided at the lower position of the threaded part of the screw to limit the tightening length of the screw on the airtight support plate nut and avoid damaging the airtight sleeve on the airtight support plate nut.

[0009] The nut has a hexagonal part at the upper end and two ears at the lower end, which facilitates manual operation in the field when no special tools are available; the nut matches the threaded part at the lower end of the screw, and the nut can be screwed in from the upper end of the screw;

[0010] The quick-release connector has a hexagonal rod at its upper end; the lower end of the quick-release connector is hollow and can be fitted onto the upper end of the screw, forming a clearance fit with the screw to ensure that the quick-release connector can move flexibly up and down on the screw; the lowest end of the quick-release connector has an internal hexagonal hole that matches the hexagonal part at the upper end of the nut, and the quick-release connector can be fitted downwards onto the hexagonal part at the upper end of the nut on the screw for quickly tightening or loosening the nut.

[0011] Furthermore, the thickness of the limiting step is selected according to the coating thickness requirements of the sealant to ensure that the step difference between the cap and the skin meets the technical requirements.

[0012] Furthermore, the hexagonal rod at the upper end of the screw and the hexagonal rod at the upper end of the quick-release connector are standard hexagonal rods, which facilitates operators to use pneumatic, electric and manual standard hexagonal wrenches for clamping and construction.

[0013] Furthermore, the screw, nut, and quick-release connector are made of 45# steel.

[0014] When using the above-mentioned aircraft hatch sealing device to waterproof and seal the aircraft hatch: First, select a matching screw according to the specifications of the airtight support plate nut on the hatch frame, and screw the lower end of the screw into the airtight support plate nut on the hatch frame until the limiting step fits against the hatch frame; second, evenly apply sealant to the surface of the hatch frame connected to the hatch, then insert the hatch from the upper end of the screw, and then screw the nut into the upper end of the screw. The nut and screw together press the hatch tightly onto the hatch frame, allowing the sealant between the hatch and the hatch frame to naturally vulcanize and form. Finally, clean up the excess sealant squeezed out around the hatch, remove the nut, remove the hatch, remove the screw on the hatch frame, and perform a simple cleaning of the sealing surface.

[0015] Beneficial effects

[0016] This utility model provides an aircraft hatch sealing device. By pre-installing a screw with a limiting step on the airtight support plate nut on the hatch frame, it can prevent sealant from entering the airtight support plate nut hole, thus avoiding the need to clean residual sealant in the airtight support plate nut hole. The limiting step on the screw fits against the hatch frame, which can limit the tightening length and ensure that the airtight sleeve on the airtight support plate nut is not damaged. The limiting step can also ensure that the roundness and size of the sealant around the bolt hole are uniform. With the action of tightening the nut on the outer surface of the hatch, the hatch has a large and uniform force area, which can ensure that the sealant has a uniform curing thickness and good molding quality. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0018] Figure 2 This is a schematic diagram of the screw structure according to an embodiment of the present utility model;

[0019] Figure 3 This is a schematic diagram of the nut structure according to an embodiment of the present utility model;

[0020] Figure 4 This is a schematic diagram of the quick-release connector structure according to an embodiment of the present invention;

[0021] Figure 5 This is an installation diagram of an embodiment of the present utility model;

[0022] Figure 6 yes Figure 5 A cross-sectional schematic diagram of AA in the middle;

[0023] Figure 7 This is a schematic diagram of the implementation process of an embodiment of this utility model.

[0024] In the diagram: 1-Screw; 11-Hexagonal rod at the upper end of the screw; 12-Threaded part; 13-Restricting step; 2-Nut; 21-Hexagonal part; 22-Double ears; 3-Quick release connector; 31-Hexagonal rod at the upper end of the quick release connector; 32-Internal hexagonal hole; 4-Hole frame; 5-Airtight support plate nut; 51-Outer airtight sleeve of the airtight support plate nut; 6-Cap; 7-Sealant. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0026] One embodiment of this utility model is, for example... Figures 1 to 4 As shown, an aircraft mouth cover sealing device includes a screw 1, a nut 2, and a quick-release connector 3;

[0027] like Figure 2 , Figure 5 , Figure 6As shown, the upper end of the screw 1 is provided with a hexagonal rod 11; the lower end of the screw 1 is a threaded part 12, which matches the airtight support plate nut 5 on the frame 4; a limiting step 13 is provided at the lower position of the threaded part 12 of the screw 1 to limit the tightening length of the screw 1 on the airtight support plate nut 5 and avoid damaging the airtight sleeve 51 on the airtight support plate nut.

[0028] like Figure 3 As shown, the nut 2 has a hexagonal part 21 at the upper end and double ears 22 at the lower end, which facilitates manual operation when no special tools are available in the field; the nut 2 matches the threaded part 12 at the lower end of the screw 1, and the nut 2 can be screwed in from the upper end of the screw 1;

[0029] like Figure 4 , Figure 5 , Figure 6 As shown, the quick-release connector 3 has a hexagonal rod 31 at its upper end; the lower end of the quick-release connector 3 is hollow and can be fitted onto the upper end of the screw 1, forming a clearance fit with the screw 1 to ensure that the quick-release connector 3 can move flexibly up and down on the screw 1; the lowermost end of the quick-release connector 3 has an internal hexagonal hole 32, which matches the hexagonal part 21 at the upper end of the nut 2. The quick-release connector 3 can be fitted downward onto the hexagonal part 21 at the upper end of the nut 2 on the screw 1 for quickly tightening or loosening the nut 2.

[0030] In this embodiment, the thickness of the limiting step 13 is selected according to the coating thickness requirements of the sealant 7 to ensure that the step difference between the cap and the skin meets the technical requirements.

[0031] In this embodiment, the hexagonal rod 11 at the upper end of the screw 1 and the hexagonal rod 31 at the upper end of the quick-release connector 3 are standard hexagonal rods, which facilitates the use of pneumatic, electric and manual standard hexagonal wrenches for clamping and construction by operators.

[0032] In this embodiment, the screw 1, nut 2, and quick-release connector 3 are made of 45 steel.

[0033] like Figure 7As shown, when using an aircraft door cover sealing device of this embodiment to waterproof and seal an aircraft door cover: First, select a matching screw 1 according to the specifications of the airtight support plate nut 5 on the door frame 4, and screw the lower end of the screw 1 into the airtight support plate nut 5 on the door frame 4 until the limiting step 13 fits against the door frame 4; Second, evenly apply sealant to the surface of the door frame 4 connected to the door cover 6, and then insert the door cover 6 from the upper end of the screw 1, and then screw the nut 2 into the upper end of the screw 1. The nut 2 and the screw 1 press the door cover 6 tightly onto the door frame 4, so that the sealant between the door cover 6 and the door frame 4 naturally vulcanizes and forms. Finally, clean up the excess sealant squeezed out around the door cover 6, remove the nut 2, remove the door cover 6, remove the screw 1 on the door frame, and simply clean the sealing surface.

[0034] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention.

Claims

1. An aircraft mouthpiece sealing device, characterized in that: Includes screws, nuts, and quick-release couplings; The upper end of the screw is provided with a hexagonal rod; the lower end of the screw is a threaded part, which matches the airtight support plate nut on the mouth frame; a limiting step is provided at the lower position of the threaded part of the screw to limit the tightening length of the screw on the airtight support plate nut and avoid damaging the airtight sleeve on the airtight support plate nut. The nut has a hexagonal part at the upper end and two ears at the lower end, which facilitates manual operation in the field when no special tools are available; the nut matches the threaded part at the lower end of the screw, and the nut can be screwed in from the upper end of the screw; The quick-release connector has a hexagonal rod at its upper end; the lower end of the quick-release connector is hollow and can be fitted onto the upper end of the screw, forming a clearance fit with the screw to ensure that the quick-release connector can move flexibly up and down on the screw; the lowest end of the quick-release connector has an internal hexagonal hole that matches the hexagonal part at the upper end of the nut, and the quick-release connector can be fitted downwards onto the hexagonal part at the upper end of the nut on the screw for quickly tightening or loosening the nut.

2. The aircraft mouthpiece sealing device according to claim 1, characterized in that: The thickness of the limiting step is selected according to the required coating thickness of the sealant.

3. The aircraft mouthpiece sealing device according to claim 2, characterized in that: The hexagonal rod at the upper end of the screw and the hexagonal rod at the upper end of the quick-release connector are standard hexagonal rods.

4. The aircraft mouthpiece sealing device according to claim 2, characterized in that: The screw, nut, and quick-release connector are made of 45 steel.

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