CN109774955B - Double-door embedded resistance umbrella cabin structure - Google Patents
Double-door embedded resistance umbrella cabin structure Download PDFInfo
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- CN109774955B CN109774955B CN201910165844.4A CN201910165844A CN109774955B CN 109774955 B CN109774955 B CN 109774955B CN 201910165844 A CN201910165844 A CN 201910165844A CN 109774955 B CN109774955 B CN 109774955B
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Abstract
The invention discloses a double-door embedded resistance parachute cabin structure, which belongs to the technical field of plane parachute cabin structures and comprises a parachute cabin beam and a parachute barrel arranged on the parachute cabin beam, wherein one end of the parachute barrel is provided with a buckle cover assembly, the buckle cover assembly comprises an upper parachute barrel cover and a lower parachute barrel cover which are respectively and elastically hinged to two sides of the end part of the parachute barrel, and the upper parachute barrel cover and the lower parachute barrel cover are in buckling connection; an electromagnetic unlocking device is arranged at the side part of the umbrella barrel at one side of the upper umbrella barrel cover, and the locking end of the electromagnetic unlocking device is connected with a connecting part arranged at one end of the upper umbrella barrel cover, which is far away from the lower umbrella barrel cover; the upper umbrella barrel cover and the lower umbrella barrel cover are respectively connected with umbrella hatch covers fused in the fuselage skin. The cover of the umbrella barrel is designed to be a double-door structure and driven to be opened by the torsion spring, and the upper umbrella barrel cover is buckled with the lower umbrella barrel cover in a closed state, so that mechanical structures such as a pull rod and an actuating cylinder, which occupy large space and are heavy, are omitted.
Description
Technical Field
The invention relates to the technical field of airplane parachute bay structures, in particular to a double-door embedded resistance parachute bay structure.
Background
Modern aircraft typically maintain high speeds while landing, and therefore require assistance to shorten the landing distance of the aircraft. The U.S. aircraft mostly adopts a speed reducing plate or a speed reducing device of each wing surface to deflect simultaneously to serve as the speed reducing plate to realize the speed reduction of the aircraft, and the Chinese, Russian and European aircraft mostly adopt a mode that a drag parachute is matched with a speed reducing plate of a fuselage to realize the speed reduction of the aircraft. The arrangement of the drag parachute cabin is divided into a backpack type and an embedded type. The backpack type is that the drag parachute cabin is arranged at the back of the back machine body, the parachute is opened and thrown after an instruction is received during landing, the drag parachute cabin is arranged in the machine body in an embedded mode, the machine body is pushed out of the parachute cabin through the actuator during the parachute throwing, and then the parachute is opened and thrown. The buried parachute bay is complicated in structure and mechanism, and causes an increase in weight.
At present, the umbrella cylinder containing the drag parachute is pushed out of the surface of the airplane body by a mechanical structure such as a pull rod, an actuating cylinder and the like in an embedded umbrella cabin structure, and the airplane with a small airplane body size cannot provide enough space for installing the devices. The tail cover is used for maintaining the aerodynamic shape of the tail of the airplane body, the inner space of the tail cover is narrow, and generally, fewer devices are installed. If the drag parachute bay is arranged on the outer side of the airplane body, the aerodynamic appearance of the airplane body is affected, drag is increased, and the stealth performance of the airplane is reduced. One prior art is provided herein by reference:
the prior art is as follows: the patent document with the publication (announcement) number of CN205168929U in the Chinese utility model discloses an electromagnetism unblock formula drag parachute cabin of uncapping, including parachute cabin, hatch door locking mechanism, drag parachute latch hook and electromagnetism release lock ware constitution, the hatch door passes through the bolt to be connected with the parachute cabin, and the electromagnetism release lock ware passes through bolted connection on the support in parachute cabin, and the electromagnetism release lock ware passes through the latch hook to be connected with the hatch door. According to the utility model, the door of the resistance umbrella is opened by the internal electromagnetic force of the cabin door lock, and the opening of the door of the resistance umbrella guides the umbrella to pop out and bring out the main umbrella; need not to connect electronic air conditioning system and mechanical system, saved complicated mechanical structure such as mechanical type unlocking mechanism, true lock and false lock system simultaneously, alleviateed structure weight and parts machining volume greatly, it is convenient to use the maintenance, the reliability is high.
However, the umbrella cylinder cover of the patent is of a single-opening structure, the structure cannot be suitable for the tail cover, and the umbrella cylinder cover is of a single-opening structure, so that the stable flight of the airplane is easily influenced to a certain extent after the airplane is put away with an umbrella, and the hemispherical umbrella cylinder cover is inconvenient to install on the tail cover, so that the stealth performance of the airplane is easily reduced, and the umbrella cylinder cover is not practical; in addition, compared with a flat plate double-open type umbrella barrel cover, the hemispherical umbrella barrel cover has a higher probability of unsuccessful umbrella throwing.
Disclosure of Invention
The invention aims to solve the technical problems and provides a double-door embedded resistance umbrella cabin structure, wherein an umbrella cabin cover is designed to be opened under the driving of a torsion spring in a double-door structure, an electromagnetic unlocking device is used for controlling the opening and closing of the umbrella cabin, and in a closed state, an upper half umbrella barrel cover is buckled with a lower half umbrella barrel cover, so that mechanical structures such as a pull rod and an actuating cylinder which occupy large space and are heavy are omitted.
The invention is realized by the following technical scheme:
a double-door embedded resistance umbrella cabin structure comprises an umbrella cabin beam and an umbrella barrel arranged on the umbrella cabin beam, wherein one end of the umbrella barrel is provided with a buckle cover assembly, the buckle cover assembly comprises an upper umbrella barrel cover and a lower umbrella barrel cover which are respectively and elastically hinged to two sides of the end part of the umbrella barrel, and the upper umbrella barrel cover and the lower umbrella barrel cover are in buckling connection; an electromagnetic unlocking device is arranged at the side part of the umbrella barrel at one side of the upper umbrella barrel cover, and the locking end of the electromagnetic unlocking device is connected with a connecting part arranged at one end of the upper umbrella barrel cover, which is far away from the lower umbrella barrel cover; the upper umbrella barrel cover and the lower umbrella barrel cover are respectively connected with umbrella hatch covers fused in the fuselage skin.
In order to better realize the invention, furthermore, one end of the upper umbrella barrel cover close to the lower umbrella barrel cover is provided with an upper buckling part which extends towards the lower umbrella barrel cover and is used for limiting, and one end of the lower umbrella barrel cover close to the upper umbrella barrel cover is provided with a lower buckling part matched with the upper buckling part.
In order to better realize the invention, the upper umbrella barrel cover and the lower umbrella barrel cover are respectively and elastically hinged with a rocker arm, and the rocker arms are respectively arranged at two sides of the umbrella barrel through the rocker arms which are elastically hinged.
In order to better realize the invention, torsion springs are arranged on hinged shafts of the upper umbrella barrel cover and the lower umbrella barrel cover which are respectively connected through the rocker arms.
In order to better realize the invention, the fuselage skin is a tail cover skin of the aircraft, and the upper umbrella barrel cover and the lower umbrella barrel cover are respectively connected with the umbrella hatch cover through cover ribs.
In order to better implement the present invention, further, the cover rib has a triangular frame structure.
In order to better realize the invention, further, the connecting part of the upper umbrella barrel cover is a locking bracket, and the locking bracket is matched with the locking end of the electromagnetic unlocking device.
In order to better realize the invention, the umbrella cabin beam is further provided with a lock hook assembly, and the connecting end of the lock hook assembly penetrates into the umbrella barrel to be connected with the drag umbrella.
In order to better realize the invention, the umbrella barrel is fixedly arranged on the umbrella cabin beam through an umbrella barrel support, and an electromagnetic unlocking device is arranged on one side of the umbrella barrel support, which is far away from the umbrella cabin beam.
A pair of parachute bay beams are arranged in a tail cover, and an umbrella barrel and an electromagnetic unlocking device are fixed on the parachute bay beams through an umbrella barrel support; the umbrella barrel cover is divided into an upper part and a lower part to form a double-door structure, the umbrella hatch cover is also divided into an upper part and a lower part by a wedge at the tail end and is respectively connected with the upper umbrella barrel cover and the lower umbrella barrel cover, when the umbrella cabin is in a closed state, the electromagnetic unlocking device locks the umbrella barrel cover at the upper part, the umbrella barrel cover at the lower part is limited in the closed state by the joint part of the umbrella barrel cover at the upper part and the umbrella barrel cover at the lower part, and the umbrella hatch cover is fused in the shape of the tail cover; after receiving the umbrella-throwing instruction, the electromagnetic unlocking device unlocks, the two parts of umbrella barrel covers are respectively turned upwards and downwards to be opened under the driving of the torsion spring, and the umbrella-throwing action is finished.
Compared with the prior art, the invention has the following advantages and beneficial effects:
(1) the invention is arranged in the tail cover with narrow space, saves the space in the machine body, saves the pull rod or the actuating cylinder device required by the common embedded umbrella cabin, has simple structure, light weight and complexity, reduces the aerodynamic resistance of the machine body and improves the stealth performance.
(2) According to the invention, the upper umbrella barrel cover and the lower umbrella barrel cover which are connected in a buckling manner are adopted, and the umbrella cabin cover is connected through the cover rib, so that the structure can be well suitable for the umbrella cabin structure of the tail cover, the stealth performance is improved, the occupied space can be well reduced, and meanwhile, the umbrella barrel covers on the upper side and the lower side can be relatively stable in air flow on the upper side and the lower side in the aircraft flying process after the umbrella is thrown.
(3) The two-opening umbrella barrel cover adopting the buckled flat plate structure has higher success rate of umbrella throwing compared with a hemispherical umbrella barrel cover.
Drawings
FIG. 1 is an isometric view of the present invention;
FIG. 2 is an isometric view of the present invention;
FIG. 3 is a close-up view of the drag parachute bay of the present invention;
FIG. 4 is a detailed closed front view of the drag parachute bay of the present invention;
FIG. 5 is a view showing a structure of a fastening portion of a cover of the umbrella case of the present invention;
FIG. 6 is a detail close-up isometric view of the drag parachute bay of the present invention;
FIG. 7 is an isometric view of the tail hood of the parachute bay of the present invention in a closed position;
FIG. 8 is an isometric view of the tail hood of the drag parachute bay of the present invention in an open position.
Wherein: 1-parachute bay beam; 2-a latch hook assembly; 3-covering the tail cover; 4-umbrella cylinder support; 5-umbrella cylinder; 6-umbrella hatch cover; 7-torsion spring; 8-an electromagnetic unlocking device; 9-mounting the umbrella barrel cover; 10-lower umbrella cover; 11-a rocker arm; 12-a locking bracket; 13-resistance umbrella.
Detailed Description
Referring to the attached drawings 1-8, the double-door embedded drag parachute cabin structure comprises a parachute cabin beam 1 and a parachute barrel 5 arranged on the parachute cabin beam 1, wherein one end of the parachute barrel 5 is provided with a buckle cover assembly, the buckle cover assembly comprises an upper parachute barrel cover 9 and a lower parachute barrel cover 10 which are respectively and elastically hinged to two sides of the end part of the parachute barrel 5, and the upper parachute barrel cover 9 is connected with the lower parachute barrel cover 10 in a buckling mode; an electromagnetic unlocking device 8 is arranged at the side part of the umbrella barrel 5 at one side of the upper umbrella barrel cover 9, and the locking end of the electromagnetic unlocking device 8 is connected with a connecting part arranged at one end of the upper umbrella barrel cover 9 far away from the lower umbrella barrel cover 10; the upper umbrella barrel cover 9 and the lower umbrella barrel cover 10 are respectively connected with an umbrella hatch cover 6 fused in the fuselage skin.
The parachute bay beam 1 is used for installing the parachute bay structure, and the parachute barrel 5 is fixedly installed on the parachute bay beam 1; the electromagnetic unlocking device 8 is fixed on one side of the upper umbrella barrel cover 9 of the umbrella barrel 5, the locking end of the electromagnetic unlocking device 8 is connected with the connecting part of the upper umbrella barrel cover 9, and the upper umbrella barrel cover 9 is elastically hinged on the umbrella barrel 5, so that the upper umbrella barrel cover 9 can be limited after the electromagnetic unlocking device 8 is locked and connected with the upper umbrella barrel cover 9, the upper umbrella barrel cover 9 is prevented from rotating, the rotation of the lower umbrella barrel cover 10 can be limited after the upper umbrella barrel cover 9 is buckled and connected with the lower umbrella barrel cover 10, the lower umbrella barrel cover 10 is limited, and meanwhile, in the closed state, the upper umbrella barrel cover 9 and the lower umbrella barrel cover 10 both have the tendency of being opened outwards through elastic hinging; after the electromagnetic unlocking device 8 receives the throwing instruction, the locking end of the electromagnetic unlocking device 8 is separated from the connecting part of the upper umbrella barrel cover 9 to unlock, the upper umbrella barrel cover 9 and the lower umbrella barrel cover 10 are opened under the action of the elastic hinge structure, and the drag umbrella 13 in the umbrella barrel 5 is ejected and hooked by the lock hook component 2 to finish the umbrella throwing action; the attached canopy cover 6 can be passively opened when the upper and lower canopy covers 9, 10 are opened to facilitate successful ejection of the drag parachute 13 outside the aircraft.
The umbrella cabin structure saves the internal space of the machine body, saves a pull rod or an acting cylinder device required by a common embedded umbrella cabin, has simple structure and light weight, and reduces the aerowork resistance of the machine body; meanwhile, compared with the existing hemispherical umbrella barrel 5 cover, the throwing success rate is improved, the structure is novel, the umbrella is practical and convenient, and only one electromagnetic lock is needed.
Further, as a preference of different embodiments, one end of the upper umbrella barrel cover 9 close to the lower umbrella barrel cover 10 is provided with an upper buckling part which extends towards the lower umbrella barrel cover 10 and is used for limiting, and one end of the lower umbrella barrel cover 10 close to the upper umbrella barrel cover 9 is provided with a lower buckling part matched with the upper buckling part.
The structure can realize the closing of the umbrella barrel 5 by limiting the other umbrella barrel 5 cover through one of the umbrella barrel 5 covers, and when the umbrella is thrown, the lower umbrella barrel cover 10 rotates along with the rotation of the upper umbrella barrel cover 9, so that a drag umbrella 13 in the umbrella barrel 5 can be ejected; the umbrella cylinder 5 cover structure is simpler in structure, other complex driving mechanisms are omitted, the umbrella throwing success rate is improved, and the cost is lower.
Further, as a preference of different embodiments, the upper and lower umbrella barrel covers 9 and 10 are respectively elastically hinged with a rocker arm 11, and are respectively arranged on two sides of the umbrella barrel 5 through the elastically hinged rocker arms 11.
The upper umbrella barrel cover 9 and the lower umbrella barrel cover 10 are respectively connected with a hinged shaft through a rocker 11, the hinged shaft is fixedly connected with the umbrella cabin structure through a hinged support, as shown in figures 3 and 4, the size and the shape of the upper umbrella barrel cover 9 and the lower umbrella barrel cover 10 are not matched with the umbrella barrel 5, the opening size larger than the umbrella barrel 5 is made to be square and covered on the umbrella barrel 5, and therefore the rocker 11 is arranged to facilitate the rotation of the upper umbrella barrel cover 9 and the lower umbrella barrel cover 10.
Further, as a preferred option of different embodiments, the upper and lower cylinder covers 9 and 10 are provided with torsion springs 7 on the hinge shafts connected by the rocker arms 11.
The upper umbrella barrel cover 9 and the lower umbrella barrel cover 10 are both hinged on the umbrella barrel 5 through the rocker arm 11, the rocker arm 11 is fixedly connected with the hinged shaft, and the torsional spring 7 is arranged on the hinged shaft, so that an elastic hinged structure is formed, and the buckle cover component has an opening tendency when being closed.
Further, as a preferable mode of the different embodiments, the fuselage skin is a tail cover skin 3 of the aircraft, and the upper and lower umbrella covers 9 and 10 are respectively connected with the umbrella hatch 6 through a cover rib.
To the parachute bay structure of tail cover, traditional parachute bay structure is comparatively complicated, actuating mechanism is more, stealthy performance is lower, and 5 lid structures of umbrella section of thick bamboo through double open-type, can reduce 5 lid occupation spaces of umbrella section of thick bamboo and other actuating mechanism's occupation space, also be convenient for simultaneously connect umbrella hatch lid 6 through covering the rib, can make the parachute bay structure can fuse with the fuselage under the linkage effect of covering the rib, make the contact effect to the air current better, the resistance is littleer, and the stealthy performance of aircraft has been improved.
Further, as shown in fig. 4, the connection part of the upper umbrella barrel cover 9 is a locking bracket 12, and the locking bracket 12 is matched with the locking end of the electromagnetic unlocking device 8.
The locking support 12 is used for locking and connecting the upper umbrella barrel cover 9 with the electromagnetic unlocking device 8, and after the electromagnetic unlocking device 8 is connected with the locking support 12, the upper umbrella barrel cover 9 cannot rotate, so that limiting is realized.
Further, as shown in fig. 1 and 2, as a preferred option of different embodiments, a locking hook assembly is further disposed on the umbrella cabin beam, and a connecting end of the locking hook assembly penetrates through the umbrella barrel to be connected with the drag umbrella.
The locking hook component 2, which is used in the prior art together with the umbrella barrel 5 and the connection relationship, is used for carrying out the umbrella-throwing action as shown in figure 3.
Further, as a preferable option of different embodiments, the umbrella barrel 5 is fixedly arranged on the canopy beam 1 through an umbrella barrel support 4, and an electromagnetic unlocking device 8 is arranged on one side of the umbrella barrel support 4 away from the canopy beam 1.
Further, as a preference of the different embodiments, the cover rib is a triangular frame structure.
The cover rib of the triangular frame structure can improve the damage resistance and facilitate the opening of the umbrella hatch cover 6 when the cover assembly is opened.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications and equivalent variations of the above embodiments according to the technical spirit of the present invention are included in the scope of the present invention.
Claims (9)
1. The utility model provides a bury resistance parachute cabin structure in two doors, includes parachute cabin roof beam (1) and sets up parachute barrel (5) on parachute cabin roof beam (1), its characterized in that: a buckle cover assembly is arranged at one end of the umbrella barrel (5), the buckle cover assembly comprises an upper umbrella barrel cover (9) and a lower umbrella barrel cover (10) which are respectively and elastically hinged to the two sides of the end part of the umbrella barrel (5), and the upper umbrella barrel cover (9) is connected with the lower umbrella barrel cover (10) in a buckling manner; an electromagnetic unlocking device (8) is arranged at the side part of the umbrella barrel (5) at one side of the upper umbrella barrel cover (9), and the locking end of the electromagnetic unlocking device (8) is connected with a connecting part arranged at one end of the upper umbrella barrel cover (9) far away from the lower umbrella barrel cover (10); the upper umbrella barrel cover (9) and the lower umbrella barrel cover (10) are respectively connected with an umbrella hatch cover (6) fused in the fuselage skin.
2. The double-door embedded drag parachute bay structure of claim 1, wherein: go up the umbrella barrel lid (9) and be close to the one end of lower umbrella barrel lid (10) and be provided with to lower umbrella barrel lid (10) extension and be used for spacing last buckling parts, the one end that lower umbrella barrel lid (10) is close to last umbrella barrel lid (9) is provided with the lower buckling parts that matches with last buckling parts.
3. The double-door embedded drag parachute bay structure of claim 1, wherein: the upper umbrella barrel cover (9) and the lower umbrella barrel cover (10) are respectively and elastically hinged with rocker arms (11) and are respectively arranged on two sides of the umbrella barrel (5) through the rocker arms (11) which are elastically hinged.
4. The double-door embedded drag parachute bay structure of claim 3, wherein: and the upper umbrella barrel cover (9) and the lower umbrella barrel cover (10) are respectively provided with a torsional spring (7) through a hinged shaft connected with a rocker arm (11).
5. The double-door embedded drag parachute bay structure of any one of claims 1 to 4, wherein: the fuselage skin is the aircraft tail cover skin (3) of the aircraft, and the upper umbrella barrel cover (9) and the lower umbrella barrel cover (10) are respectively connected with the umbrella hatch cover (6) through cover ribs.
6. The double-door embedded drag parachute bay structure of claim 5, wherein: the cover rib is of a triangular frame structure.
7. The double-door embedded drag parachute bay structure of claim 1, wherein: the connecting part of the upper umbrella barrel cover (9) is a locking support (12), and the locking support (12) is matched with the locking end of the electromagnetic unlocking device (8).
8. The double-door embedded drag parachute bay structure of claim 1, wherein: the umbrella cabin beam (1) is further provided with a lock hook assembly (2), and the connecting end of the lock hook assembly (2) penetrates through the umbrella barrel (5) to be connected with a drag umbrella (13).
9. The double-door embedded drag parachute bay structure of claim 1, wherein: the umbrella barrel (5) is fixedly arranged on the umbrella cabin beam (1) through an umbrella barrel support (4), and one side, away from the umbrella cabin beam (1), of the umbrella barrel support (4) is provided with an electromagnetic unlocking device (8).
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| CN201910165844.4A CN109774955B (en) | 2019-03-06 | 2019-03-06 | Double-door embedded resistance umbrella cabin structure |
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| CN201910165844.4A CN109774955B (en) | 2019-03-06 | 2019-03-06 | Double-door embedded resistance umbrella cabin structure |
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| CN109774955B true CN109774955B (en) | 2022-01-25 |
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| CN114933008A (en) * | 2022-05-23 | 2022-08-23 | 成都飞机工业（集团）有限责任公司 | Embedded drag parachute cabin lifting structure and resetting method thereof |
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