CN109178290A - A kind of folding structure of aircraft bottom maintenance hatch door - Google Patents
A kind of folding structure of aircraft bottom maintenance hatch door Download PDFInfo
- Publication number
- CN109178290A CN109178290A CN201810934776.9A CN201810934776A CN109178290A CN 109178290 A CN109178290 A CN 109178290A CN 201810934776 A CN201810934776 A CN 201810934776A CN 109178290 A CN109178290 A CN 109178290A
- Authority
- CN
- China
- Prior art keywords
- hatch door
- aircraft
- door frame
- door
- hinged
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C1/00—Fuselages; Constructional features common to fuselages, wings, stabilising surfaces or the like
- B64C1/14—Windows; Doors; Hatch covers or access panels; Surrounding frame structures; Canopies; Windscreens accessories therefor, e.g. pressure sensors, water deflectors, hinges, seals, handles, latches, windscreen wipers
- B64C1/1407—Doors; surrounding frames
- B64C1/1446—Inspection hatches
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Closing And Opening Devices For Wings, And Checks For Wings (AREA)
Abstract
The invention discloses the folding structures of aircraft bottom maintenance hatch door, including aircraft door and hatch door frame, the hatch door frame is the horizontal mount structure being fixed on airframe, the aircraft door is the overhead door of an inner band airstair, it is characterized in that two parallel suspension arms for having inclination angle are stretched out at the inside suspension end of the aircraft door, the outer end of two suspension arms passes through one end that attachment base is hinged on hatch door frame respectively, there are two parallel gas spring is respectively that the inner end of two suspension arms and the other end of hatch door frame is hinged, a suspended axle is respectively fixed at the nearly suspended end in the two sides of hatch door frame, it is hinged with the bearing rod of a groove profile respectively at the remote suspended end in the two sides of aircraft door, the suspension axis connection of the other end of the bearing rod and hatch door frame two sides, there is a tension bullet between the middle part and aircraft door of the bearing rod Spring.The configuration of the present invention is simple, easy to operate, advantageous personnel and equipment is current and hatch door is safeguarded in the lesser aircraft bottom of occupied space.
Description
Technical field
The present invention relates to airplane design technology, the folding structure of specifically a kind of aircraft bottom maintenance hatch door.
Background technique
Aircraft maintenance hatch door is the important feature component on aircraft maintenance maintenance facility access way, and the superiority and inferiority of design is straight
The passage for influencing the daily maintenance of aircraft and instrument and equipment is connect, guarantee military secret wartime rapid-maintenance and civil aircraft are persistently fitted
It navigates particularly important, existing maintenance hatch door mostly uses four-bar mechanism to carry out folding and unfolding, and is carried out after hatch door fully opens using its dead point
Stop, but dead point can bring adverse effect (direction even uncertain mechanism dieback) to movement is packed up, therefore often need to install additional
A set of finished product positions latch mechanism, also can be however such by hatch door positive lock when guaranteeing that folding structure be in non-dead-centre position
Since, it can not only make cost increase, structure also becomes complex, unlocking motion need to be completed at the same time when hatch door is packed up, operability
It is poor；In addition, the principal layout of four-bar mechanism also results in the passage for influencing personnel and equipment when folding structure is put down, and pack up
Space in more cabin is occupied afterwards.
Summary of the invention
The application to be designed to provide a kind of structure simple, easy to operate, advantageous personnel and equipment are current and occupy empty
Between lesser aircraft bottom maintenance hatch door folding structure.
A kind of folding structure of aircraft bottom maintenance hatch door, containing aircraft door and hatch door frame, which is one solid
The horizontal mount structure being scheduled on airframe, the aircraft door are the overhead doors of an inner band airstair, it is characterised in that
Two parallel suspension arms for having inclination angle are stretched out at the aircraft door inside suspension end, and the outer end of each suspension arm passes through connection
Seat is hinged on one end of hatch door frame, and a gas spring is hinged between suspension arm inner end and the other end of hatch door frame, in hatch door
It is respectively fixed with a suspended axle at the nearly suspended end in the two sides of frame, is hinged with a slot respectively at the remote suspended end in the two sides of hatch door
The bearing rod of type, the suspension axis connection of the other end of the bearing rod and hatch door frame two sides.
The beneficial effects of the present application are as follows:
1) the folding and unfolding movement that hatch door is realized using leverage principle as few as possible, reduces the use of auxiliary finished parts,
The development cost for saving hatch door improves the reliability of hatch door folding and unfolding movement.
2) suspension arm is located at the two sides of airstair, is the extension of airstair side wall, has compact-sized space-saving excellent
Gesture.Its simple and compact structure lightened design not only makes to safeguard that hatch door has enough passage spaces, and has stronger
Loading allowance is significant to guarantee rapid-maintenance and civil aircraft continuing airworthiness.
3) gas spring is conducive to the folding and unfolding buffering of hatch door, and can prevent outdoor gust disturbances.
4) hatch door opened is suspended on hatch door frame respectively by bearing rod and suspension arm, sliding slot of the suspended axle by suspension arm
It limits, it is structurally reasonable.
Attached drawing is described in further detail the application with reference to embodiments.
Detailed description of the invention
Fig. 1 is the folding structure schematic diagram of aircraft bottom maintenance hatch door；
Fig. 2 is cabin door structure schematic diagram；
Fig. 3 is the opening state schematic diagram of aircraft bottom maintenance hatch door；
Fig. 4 is the closed mode schematic diagram of aircraft bottom maintenance hatch door；
In figure number explanation: 1, airframe, 2, hatch door frame, 3, hatch door, 4, suspension arm, 5, attachment base, 6, gas spring, 7,
Suspended axle, 8, bearing rod, 9, shaft, 10, back-moving spring.
Specific embodiment
Referring to attached drawing, aircraft bottom safeguards the folding structure of hatch door, contains aircraft door 3 and hatch door frame 2, the hatch door frame 2
It is the horizontal mount structure being fixed on airframe 1, which is the overhead door of an inner band airstair,
Two parallel suspension arms 4 for having inclination angle are stretched out at the inside suspension end of aircraft door, and in the present embodiment, which is in hatch door
The extended structure of side airstair side wall is in T-shape, as shown in Fig. 2, the plane where suspension arm and hatch door is in about 60 degree of angles,
The outer end of two suspension arms 4 passes through one end that attachment base 5 is hinged on hatch door frame 2 respectively, rotates about hatch door and realizes that folding and unfolding is dynamic
Make, another there are two parallel gas spring 6 is respectively that the inner end of two suspension arms 4 and the other end of hatch door frame is hinged, four bars of composition
Mechanism is respectively fixed with a suspended axle 7 at the nearly suspended end in the two sides of hatch door frame 2, in the remote suspended end punishment in the two sides of hatch door
Not Tong Guo shaft 9 be hinged with the bearing rod 8 of a groove profile, the suspended axle 7 of the other end of the bearing rod 8 and hatch door frame two sides
Connection, suspended axle 7 are embedded in the slot of bearing rod 8.The interference of bearing rod 8 and hatch door frame 2 in order to prevent, in bearing rod 8
A back-moving spring 10 is equipped between portion and hatch door 3.
When opening hatch door, after operation outdoor handle unlock, hatch door 3 is opened under the effect of gravity, and gas spring 6 will continuous quilt
Compression is to play buffer damping, and hatch door 3 is during downlink, when suspended axle 7 is encountered in the end of bearing rod 8, hatch door 3
Just hang on this and stop motion, meanwhile, the position of gas spring 6 also have been located in the hinge joint of attachment base 5 and hatch door 3 hereinafter,
Therefore hatch door 3 can reliably rest on predetermined position under the stabilizing moment effect of gas spring 6, without beat or by fitful wind and
The disturbance of other factors, full open position are as shown in Figure 3.When packing up hatch door, the effect of gravity and gas spring 6 is overcome first
Power, after hatch door 3 is rotated up smaller stroke, when the position of gas spring 6 is located at the hinge joint of attachment base 5 and hatch door 3 or more,
The active force of gas spring 6 is just changed into power-assisted by resistance, and at this point, one end of bearing rod 8 is pulled patch by back-moving spring 10 always
It closes to prevent from interfering with hatch door frame 2 in shaft 9, after hatch door 3 is closed in place, then by operation outdoor handle, to realize
The locking of hatch door 3.
The basic principles, main features and advantages of the invention have been shown and described above.The technical staff of the industry should
Understand, the present invention is not limited to the above embodiments, and the above embodiments and description only describe originals of the invention
Reason, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes and improvements
It all fall within the protetion scope of the claimed invention.
Claims (2)
1. a kind of folding structure of aircraft bottom maintenance hatch door, which is characterized in that including aircraft door and hatch door frame, the hatch door frame
It is the horizontal mount structure being fixed on airframe, which is the overhead door of an inner band airstair,
Be characterized in that two parallel suspension arms for having inclination angle are stretched out at the inside suspension end of the aircraft door, two suspension arms it is outer
End is hinged on one end of hatch door frame by attachment base respectively, there are two parallel gas spring respectively by the inner end of two suspension arms and
The other end of hatch door frame is hinged, a suspended axle is respectively fixed at the nearly suspended end in the two sides of hatch door frame, in aircraft door
The bearing rod of a groove profile is hinged at the remote suspended end in two sides respectively, the other end of the bearing rod is outstanding with hatch door frame two sides
Hanging scroll connection, there is a back-moving spring between the middle part and aircraft door of the bearing rod.
2. the folding structure of maintenance hatch door in aircraft bottom as described in claim 1, which is characterized in that the suspension arm is winged
The extended structure of airstair side wall on the inside of cabin door.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810934776.9A CN109178290A (en) | 2018-08-16 | 2018-08-16 | A kind of folding structure of aircraft bottom maintenance hatch door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810934776.9A CN109178290A (en) | 2018-08-16 | 2018-08-16 | A kind of folding structure of aircraft bottom maintenance hatch door |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109178290A true CN109178290A (en) | 2019-01-11 |
Family
ID=64918361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810934776.9A Withdrawn CN109178290A (en) | 2018-08-16 | 2018-08-16 | A kind of folding structure of aircraft bottom maintenance hatch door |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109178290A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111071475A (en) * | 2019-12-13 | 2020-04-28 | 西安飞机工业（集团）有限责任公司 | Method for closing main starting maintenance cabin door of airplane and power assisting device |
| CN115144924A (en) * | 2021-03-30 | 2022-10-04 | 同方威视技术股份有限公司 | Multi-cabin door structure for multifunctional vehicle-mounted security check system and multifunctional vehicle-mounted security check system |
-
2018
- 2018-08-16 CN CN201810934776.9A patent/CN109178290A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111071475A (en) * | 2019-12-13 | 2020-04-28 | 西安飞机工业（集团）有限责任公司 | Method for closing main starting maintenance cabin door of airplane and power assisting device |
| CN111071475B (en) * | 2019-12-13 | 2022-07-12 | 西安飞机工业（集团）有限责任公司 | Method for closing main starting maintenance cabin door of airplane and power assisting device |
| CN115144924A (en) * | 2021-03-30 | 2022-10-04 | 同方威视技术股份有限公司 | Multi-cabin door structure for multifunctional vehicle-mounted security check system and multifunctional vehicle-mounted security check system |
| CN115144924B (en) * | 2021-03-30 | 2023-10-03 | 同方威视技术股份有限公司 | Multi-cabin door structure for multifunctional vehicle-mounted security inspection system and multifunctional vehicle-mounted security inspection system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190111 |