CN113320713B - Quick-release maintenance covering cap device for large opening surface of nacelle - Google Patents
Quick-release maintenance covering cap device for large opening surface of nacelle Download PDFInfo
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- CN113320713B CN113320713B CN202110471412.3A CN202110471412A CN113320713B CN 113320713 B CN113320713 B CN 113320713B CN 202110471412 A CN202110471412 A CN 202110471412A CN 113320713 B CN113320713 B CN 113320713B
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- hinge
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- rod body
- opening
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64F—GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT; DESIGNING, MANUFACTURING, ASSEMBLING, CLEANING, MAINTAINING OR REPAIRING AIRCRAFT, NOT OTHERWISE PROVIDED FOR; HANDLING, TRANSPORTING, TESTING OR INSPECTING AIRCRAFT COMPONENTS, NOT OTHERWISE PROVIDED FOR
- B64F5/00—Designing, manufacturing, assembling, cleaning, maintaining or repairing aircraft, not otherwise provided for; Handling, transporting, testing or inspecting aircraft components, not otherwise provided for
- B64F5/40—Maintaining or repairing aircraft
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/40—Weight reduction
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- Aviation & Aerospace Engineering (AREA)
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Abstract
The invention discloses a nacelle large-opening-face quick-release maintenance opening cover device and a design method, wherein the device comprises an opening cover, a pair of connecting rod devices and a pair of stop limiting devices, each connecting rod device comprises a connecting rod body, a first hinge, a second hinge, a first hinge support and a second hinge support, one end of each connecting rod body is connected with an opening frame of a nacelle through the first hinge, and the other end of each connecting rod body is connected with the opening cover through the second hinge; the first hinge is arranged on the first hinge support, and the first hinge support is arranged below one side of the opening frame; the second hinge is arranged on the second hinge support, and the second hinge support is arranged above one side of the opening cover; the stop limiting device comprises a stop pin and a stop slot, and the opening cover stops moving after the stop slot is in contact with the stop pin, so that the connecting rod body, the opening cover and the nacelle body are prevented from colliding. According to the invention, the moving stroke of the opening cover after being opened is large, the opening cover can be far away from the opening frame, the maintenance and operation channel of equipment in the hanging cabin is completely released, and the maintenance accessibility is good.
Description
Technical Field
The invention relates to the technical field of aircraft structure design, in particular to a pod large-opening-face quick-release maintenance opening cover device.
Background
The flap is an important component of the aircraft pod structure and is the installation, inspection and maintenance access for the built-in equipment. With the improvement of pod integration technology, built-in equipment is increased gradually, and in order to ensure that equipment and accessories can be maintained and maintained in time, a large number of flaps are arranged on the surface of a pod so as to improve the maintainability of the pod.
At present, the hatch structure of the nacelle not only needs enough rigidity to ensure flight safety, but also requires that the hatch structure can not protrude the appearance of the nacelle outside the nacelle; the cover structure in the nacelle requires small occupied space in the nacelle; meanwhile, the cover cap also has the sealing requirements of rain prevention and the like; the flaps are also required to provide a sufficiently large operating and maintenance facade for the larger interior equipment and accessories of the nacelle. Usually, a large opening cover of the nacelle is separated, and is completely separated from a cabin body after being disassembled, so that screws need to be properly collected and placed in a packing box; the conventional quick-release cover cap is a hinge type sealing cover cap, the mouth surface of the cover cap is usually small, and the occupied space of a quick-release lock is large, so that a large-mouth-surface quick-release maintenance cover cap is urgently needed to improve the outfield maintenance efficiency of large equipment in the nacelle.
Disclosure of Invention
In order to solve the problems, the invention provides a pod large-mouth-face quick-release maintenance cover cap device which is simple in structure, large in mouth face, easy to seal and convenient to detach.
The technical scheme adopted by the invention is as follows:
the utility model provides a big orofacial quick-release of nacelle maintains flap device, includes flap, a pair of link means and a pair of stop device, wherein:
the connecting rod device comprises a connecting rod body, a first hinge, a second hinge, a first hinge support and a second hinge support, one end of the connecting rod body is connected with a mouth frame of the nacelle through the first hinge, and the other end of the connecting rod body is connected with the mouth cover through the second hinge; the first hinge is arranged on the first hinge support, and the first hinge support is arranged below one side of the opening frame; the second hinge is arranged on the second hinge support, and the second hinge support is arranged above one side of the opening cover; when the cover is closed, the connecting rod body is in a retracted state, and when the cover is opened, the connecting rod body is in an extended state;
the stopping limiting device comprises a stopping pin and a limiting clamping groove, the stopping pin is arranged on the first hinge support, the limiting clamping groove is arranged at the end part, close to one side of the opening frame, of the connecting rod body, and when the limiting clamping groove is in pin contact with the stopping pin, the opening cover stops moving, so that the connecting rod body and the opening cover are prevented from colliding with the nacelle body.
The length a of the connecting rod body and the distance c between the second hinge and the upper edge of the opening cover meet the following two design requirements:
a) The maximum mouth height H after the opening cover is opened is more than or equal to the height b of the mouth frame, so that the opening cover is ensured to be free of shielding for a maintenance channel of equipment when opened:
wherein beta is an included angle between the connecting rod body and the opening cover after the opening cover is opened;
b) After the opening cover is opened, the clearance e between the connecting rod body and the opening frame is more than or equal to the minimum safety clearance e 0 To ensure that the connecting rod body and the mouth frame do not collide when the mouth cover is opened:
wherein d is the distance between the center of the second hinge and the outer surface of the opening cover, and f is the width of the connecting rod body; b. d and f are determined by the pod structure, design values of the length a of the connecting rod body and the distance c between the second hinge and the upper edge of the flap can be calculated and checked through formulas (1) and (2), an included angle beta between the connecting rod body and the flap after the flap is opened is determined, and the stop pin and the limiting clamping groove are designed according to the included angle beta.
Further, a sealing adhesive layer is used for sealing between the opening cover and the opening frame, and the sealing adhesive layer is solidified on the opening frame.
Furthermore, fixing screws are evenly arranged on the periphery of the opening cover, and the opening cover and the sealing adhesive layer are tightly pressed through the fixing screws.
Furthermore, the fixing screws are four-thread release screws, and when the cover is in the opening state, the fixing screws, the cover and the nacelle are all in the release state and are not separated from the nacelle structural body.
Furthermore, a latticed reinforcing rib structure is arranged on the inner side of the opening cover.
Further, the first hinge support is riveted to the opening frame through a rivet.
Further, the second hinge support is riveted on the port cover through a rivet.
The invention has the beneficial effects that:
(1) The hatch cover device for the large-opening-surface quick-release maintenance of the nacelle is mainly used for meeting the maintenance requirements of large built-in equipment, has a large moving stroke after the hatch cover is opened, can be far away from the opening frame, completely releases a maintenance and operation channel of the equipment in the nacelle, and has good maintenance accessibility.
(2) The cover cap device does not need to take out screws, pick and place the cover cap, align the screws and the like in the dismounting process, and meanwhile, the fastening screws of the cover cap are quick-release screws, so that the operation and maintenance time is saved, and the maintainability is obviously improved.
Drawings
FIG. 1 is a schematic view showing an open state of a flap in embodiment 1 of the present invention;
FIG. 2 is a schematic view of the inside of a flap in embodiment 1 of the present invention;
FIG. 3 is a schematic view of a stop and limit device according to embodiment 1 of the present invention;
FIG. 4 is a schematic view of the design parameters of a door according to embodiment 1 of the present invention;
reference numerals: 1-a flap; 2-nacelle body; 3-connecting rod body; 4-first hinge; 5-second hinge; 6-supporting plate nut; 7-captive screw; 8-sealing glue layer; 9-reinforcing ribs; 10-stop pin; 11-a limit slot; 12-electronic device.
Detailed Description
In order to more clearly understand the technical features, objects, and effects of the present invention, specific embodiments of the present invention will now be described. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
As shown in fig. 1 and 2, the present embodiment provides a nacelle large-opening-surface quick-release maintenance flap device, which includes a flap 1, a pair of link devices, and a pair of stop limit devices, where the link devices include a link body 3, a first hinge 4, a second hinge 5, a first hinge 4 support, and a second hinge 5 support, one end of the link body 3 is connected to an opening frame of the nacelle through the first hinge 4, and the other end is connected to the flap 1 through the second hinge 5; the first hinge 4 is arranged on a first hinge 4 support, and the first hinge 4 support is arranged below one side of the opening frame; the second hinge 5 is arranged on the second hinge 5 support, and the second hinge 5 support is arranged above one side of the opening cover 1.
As shown in fig. 3, the stop limiting device includes a stop pin 10 and a limit slot 11, the stop pin 10 is disposed on the first hinge 4 support, the limit slot 11 is disposed on the end portion of the connecting rod body 3 close to one side of the mouth frame, and the mouth cover 1 stops moving after the limit slot 11 contacts the stop pin 10. The stop limiting device is used for preventing the connecting rod body 3 and the opening cover 1 from colliding with the nacelle body 2 to cause damage to the structure and the surface paint layer.
In this embodiment, when flap 1 was closed, connecting rod body 3 was in the state of packing up, and when flap 1 was opened, connecting rod body 3 was in the state of stretching out, and the distance of flap 1 center to the oral frame center travel stroke can reach 2 times connecting rod body 3 length, and the travel stroke is great.
Specifically, the sealing glue layer 8 is used for sealing between the opening cover 1 and the opening frame, and the sealing glue layer 8 is solidified on the opening frame. Fixing screws are evenly arranged on the periphery of the opening cover 1, and the opening cover 1 and the sealing adhesive layer 8 are compressed through the fixing screws. Preferably, the fixing screws are four-thread release screws 7, and when the flap 1 is in the open state, the fixing screws, the flap 1 and the nacelle are all in the release state and are not separated from the nacelle structural body.
Preferably, as shown in fig. 2, a grid-shaped reinforcing rib 9 is provided inside the flap 1.
More specifically:
be provided with the mounting hole all around on flap 1, be provided with the screw via hole on the oral frame, the mounting hole on flap 1 and the processing mode of the screw via hole adoption of mouthful on the frame of beating, guarantee that the hole site aligns to through the rivet with layer board nut 6 riveting on mouthful frame, then will loosen not take off screw 7 and install on flap 1.
The first hinge 4 support is riveted at the lower positions of the two sides of the opening frame through rivets, then sealant is uniformly coated on the sealing surface of the opening frame, and the work fixture is adopted for flattening, pressing and curing.
Install flap 1 on the mouth frame through loosening screw 7 not, then installation connecting rod body 3 and 5 supports of second hinge, 5 supports of second hinge pass through the rivet riveting on flap 1, and the processing mode of beating is joined in marriage in the rivet hole adoption.
Debugging first hinge 4 and second hinge 5 guarantees that flap 1 rotates in a flexible way when opening, and flap 1 outward flange flushes with the periphery when closing.
As shown in fig. 4, the length a of the connecting rod body 3 and the distance c of the second hinge 5 from the upper edge of the flap 1 satisfy the following two design requirements:
a) The height H of the maximum mouth surface after the opening of the cover 1 is greater than or equal to the height b of the mouth frame, so that the maintenance channel of the equipment is not shielded when the opening of the cover 1 is ensured:
wherein beta is an included angle between the connecting rod body 3 and the opening cover 1 after the opening cover 1 is opened;
b) The gap e between the connecting rod body 3 and the opening frame after the opening of the opening cover 1 is more than or equal to the minimum safety gap e 0 To guarantee that connecting rod body 3 does not have the collision with the mouth frame when flap 1 opens:
wherein d is the distance from the center of the second hinge 5 to the outer surface of the opening cover 1, and f is the width of the connecting rod body 3; b. d and f are determined by the pod structure, the design values of the length a of the connecting rod body 3 and the distance c between the second hinge 5 and the upper edge of the cover cap 1 can be calculated and checked through formulas (1) and (2), the included angle beta between the connecting rod body 3 and the cover cap 1 after the cover cap 1 is opened is determined, and the stop pin 10 and the limiting clamping groove 11 are designed according to the included angle beta.
The foregoing is illustrative of the preferred embodiments of this invention, and it is to be understood that the invention is not limited to the precise form disclosed herein and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the concept as disclosed herein, either as described above or as apparent to those skilled in the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships conventionally placed when the present invention is used, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; either a wired or wireless connection.
Claims (7)
1. A nacelle large-mouth-face quick-release maintenance mouth cover device is characterized by comprising a mouth cover, a pair of connecting rod devices and a pair of stop limiting devices;
the connecting rod device comprises a connecting rod body, a first hinge, a second hinge, a first hinge support and a second hinge support, one end of the connecting rod body is connected with a mouth frame of the nacelle through the first hinge, and the other end of the connecting rod body is connected with the mouth cover through the second hinge; the first hinge is arranged on the first hinge support, and the first hinge support is arranged below one side of the opening frame; the second hinge is arranged on the second hinge support, and the second hinge support is arranged above one side of the opening cover; when the cover is closed, the connecting rod body is in a retracted state, and when the cover is opened, the connecting rod body is in an extended state;
the stopping limiting device comprises a stopping pin and a limiting clamping groove, the stopping pin is arranged on the first hinge support, the limiting clamping groove is arranged at the end part of the connecting rod body close to one side of the opening frame, and the opening cover stops moving after the limiting clamping groove is in pin contact with the stopping pin, so that the connecting rod body and the opening cover are prevented from colliding with the nacelle body;
the length a of the connecting rod body and the distance c between the second hinge and the upper edge of the opening cover meet the following two design requirements:
a) The maximum mouth height H after the opening cover is opened is more than or equal to the height b of the mouth frame, so that the opening cover is ensured to be free of shielding for a maintenance channel of equipment when opened:
wherein beta is an included angle between the connecting rod body and the opening cover after the opening cover is opened;
b) After the opening cover is opened, the clearance e between the connecting rod body and the opening frame is more than or equal to the minimum safety clearance e 0 To ensure that the connecting rod body and the mouth frame do not collide when the mouth cover is opened:
wherein d is the distance between the center of the second hinge and the outer surface of the opening cover, and f is the width of the connecting rod body; b. d and f are determined by the pod structure, the design values of the length a of the connecting rod body and the distance c between the second hinge and the upper edge of the flap can be calculated and checked through formulas (1) and (2), the included angle beta between the connecting rod body and the flap after the flap is opened is determined, and the stop pin and the limit clamping groove are designed according to the included angle beta.
2. The pod wide-mouth quick release maintenance flap arrangement as recited in claim 1, wherein said flap is sealed to said mouth frame with a layer of sealant, said layer of sealant being cured on said mouth frame.
3. The device of claim 2, wherein the cover is uniformly provided with fixing screws around the cover, and the cover and the sealant layer are pressed tightly by the fixing screws.
4. The device of claim 3, wherein the fixing screws are four-thread release screws, and in the open state of the flap, the fixing screws, the flap and the nacelle are in a release state and are not separated from the nacelle structural body.
5. The pod hatch arrangement according to claim 1, characterized in that a grid-like reinforcement structure is provided on the inside of the hatch.
6. The pod hatch arrangement according to claim 1, wherein said first hinge bracket is riveted to said hatch frame by rivets.
7. The pod hatch arrangement according to claim 1, wherein said second hinge mount is riveted to said hatch by rivets.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110471412.3A CN113320713B (en) | 2021-04-29 | 2021-04-29 | Quick-release maintenance covering cap device for large opening surface of nacelle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110471412.3A CN113320713B (en) | 2021-04-29 | 2021-04-29 | Quick-release maintenance covering cap device for large opening surface of nacelle |
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| CN113320713A CN113320713A (en) | 2021-08-31 |
| CN113320713B true CN113320713B (en) | 2023-03-24 |
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| CN202110471412.3A Active CN113320713B (en) | 2021-04-29 | 2021-04-29 | Quick-release maintenance covering cap device for large opening surface of nacelle |
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| CN113320713A (en) | 2021-08-31 |
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