CN207725644U - A kind of built-in flexible airstair - Google Patents
A kind of built-in flexible airstair Download PDFInfo
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- CN207725644U CN207725644U CN201721749812.1U CN201721749812U CN207725644U CN 207725644 U CN207725644 U CN 207725644U CN 201721749812 U CN201721749812 U CN 201721749812U CN 207725644 U CN207725644 U CN 207725644U
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- airstair
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Abstract
The utility model belongs to aircaft configuration field, specifically related to a kind of built-in flexible airstair, including chopped-off head bearing (2), servo-actuated clutch pedal mounting bracket (3), chopped-off head ladder pipe (4), servo-actuated pedal (5), servo-actuated pedal arm (6), chopped-off head support arm (7), chopped-off head rocking arm (8), chopped-off head pedal (9), secondary ladder pipe (10), secondary pedal (11), locking bolt (16), bushing (17), so that pilot or ground crew is not gone on or off the plane by outside plant, is operated into cockpit.When not in use, airstair can firmly close at internal body.Built-in flexible airstair is installed on inside housing construction, and aircraft is enable not limited by landing site's condition, and ground crew is only needed to assist expansion and storage, pilot that can freely go on or off the plane.It is in a certain angle with vertical direction after airstair expansion, facilitate related personnel to trample, is secured entirely on internal body after airstair storage, does not influence the aerodynamic configuration of aircraft.
Description
Technical field
The invention belongs to aircaft configuration fields, and in particular to arrive a kind of built-in flexible airstair.
Background technology
Airstair is a kind of device to go on or off the plane for pilot and ground service maintenance personnel.Common airstair is generally deposited
It is put in ground, aircraft is moved to by ground crew below aircraft after turning out for work or returning, then carries out overlap joint fixation with body.It is this to step on
The general heavier-weight of machine ladder, it is reasonable that step width, height are arranged, and stability is good.But if aircraft landing lacks in ground installation
Airstrip, such airstair be then possible to can not rapid deployment to aircraft vicinity, make pilot that can not leave aircraft.Or aircraft
The landing on aircraft carrier, deck space is narrow, mobile to dispose such airstair and influence the working efficiency on deck, increase airstair with
The risk that carrier-borne aircraft body collides.
Built-in airstair then can be well solved the above problem.Built-in airstair is accommodated in internal body, in pilot
Or ground crew is operated from ground, airstair is unfolded, be ready when pilot enters aircraft first when going on or off the plane
Start before sliding, then income internal body is operated by ground crew.Built-in airstair has not to be limited by landing ground Infrastructure,
It is not take up deck space, it can rapid deployment and the advantages that packing up.Many active services or retired fighter plane are all designed with built-in
Airstair, as the stealthy fighter planes of F-35 are provided with built-in airstair in forebody cockpit side-lower.
Invention content
It is proposed a kind of built-in flexible airstair, its purpose is that：Enable pilot or ground crew not by outside plant
It goes on or off the plane, is operated into cockpit.When not in use, airstair can firmly close at internal body.
Technical solution：As shown in Fig. 2, the main parts size of built-in flexible airstair includes：Airstair support structure 1, head
Grade bearing 2, servo-actuated clutch pedal mounting bracket 3, chopped-off head ladder pipe 4, servo-actuated pedal 5, servo-actuated pedal arm 6, chopped-off head support arm 7, chopped-off head rocking arm 8,
Chopped-off head pedal 9, secondary terraced pipe 10, secondary pedal 11, locking bolt 16, bushing 17.
It is the installation and storage space that airstair mechanism provides that airstair support structure 1, which represents housing construction, for connecting
Connect the bearing of fixed chopped-off head bearing 2, servo-actuated clutch pedal mounting bracket 3, locking bolt 16 and chopped-off head support arm 7.Chopped-off head ladder pipe 4 by its from
The shaft of body is connect with chopped-off head bearing 2, can be rotated around chopped-off head bearing 2.Chopped-off head rocking arm 8 is connected with chopped-off head ladder pipe 4, can be around chopped-off head ladder
Pipe 4 rotates.
The servo-actuated pedal 5 of airstair the top is that pilot's disengaging cockpit provides a convenient, and is servo-actuated pedal 5 and is turned by itself
Axis is connected with servo-actuated clutch pedal mounting bracket 3 and servo-actuated pedal arm 6, and servo-actuated pedal arm 6 is connected with chopped-off head ladder pipe 4.By this
Three-link mechanism is, it can be achieved that servo-actuated pedal 5 withdraws internal body when airstair is stored with airstair, in airstair expansion
When be unfolded simultaneously, provide support, as shown in Figure 3.
Connection relation between step is as shown in Figure 4.By taking first order step and second level step as an example.Chopped-off head ladder pipe 4 with
Chopped-off head pedal 9 can be connected by modes such as bolts.Secondary ladder 10 width of pipe is suitable with 9 inner wall width of chopped-off head pedal, secondary ladder pipe
10 can slide up and down along 9 inner wall of chopped-off head pedal inside chopped-off head ladder pipe 4.Secondary ladder 10 upper end of pipe has flange, is sliding into
It contacts, is stopped with 9 inner wall end surface of chopped-off head pedal when position of maximum extension.It is opposite with upper level ladder pipe per level-one ladder pipe to transport
It is dynamic to be limited as described in above-mentioned principle with position.
When airstair is stored, it will be shunk first in upper level ladder pipe per level-one ladder pipe, subsequent chopped-off head support arm 7 shakes with chopped-off head
Arm 8 turns folding, and ladder pipes at different levels are rotated to internal body, and servo-actuated pedal 5 rotates storage simultaneously.Bushing 17 is fixed on bottom time
On grade pedal 11, when terraced pipes at different levels, which turn to bushing 17, is directed at locking bolt 16, spin locking bolt 16, locking bolt 16 to
Bushing 17 is inserted into upper movement, thus from axially and laterally terraced pipe is secured.As shown in Figure 5.
In the present invention, ladder pipe is interior inclined when taking in internal body upon deployment relative to inclined certain angle outside vertical direction.
During airstair expansion, chopped-off head ladder pipe 4 is turned out, and chopped-off head support arm 7 carries chopped-off head ladder pipe 4 with the servo-actuated expansion of chopped-off head rocking arm 8
For cross-brace, after expanding in place, rocking arm and support arm limit the rotation of itself by the block of respectively top protrusion, to provide
Stable support.
In the present invention, step quantity can be designed according to airstair installation site and aircraft altitude, be not limited to four
Grade step.
Technique effect
1. built-in flexible airstair is installed on inside housing construction, aircraft is enable not limited by landing site's condition, only
Ground crew is needed to assist expansion and storage, pilot that can freely go on or off the plane.With vertical direction in certain after airstair expansion
Angle facilitates related personnel to trample, and is secured entirely on internal body after airstair storage, does not influence the aerodynamic configuration of aircraft.
2. servo-actuated pedal is moved with the rotation of the terraced pipe of airstair, extreme higher position is provided after airstair is fully deployed
Trample a little, passing in and out cockpit for pilot and ground service maintenance personnel provides convenience, when airstair is stored with airstair
Internal body is taken in, without human intervention.
3. locking bolt provides lock function axially and also laterally, ground crew only needs rotation locking bolt can be realized
To the fully locked of airstair mechanism.
4. the ladder pipe after cross sectional shape optimization has the advantages that bending stiffness is good, be conducive to the stability for improving airstair.
5. the built-in flexible airstair also have lightweight construction, occupy little space, mechanism reliability is high, it is easy to operate just
Profit is not necessarily to the advantages that power.
Description of the drawings
Fig. 1 is airstair expansion and contraction state figure；
Fig. 2 is airstair main parts size figure；
Wherein：1. 2. chopped-off head bearing 3. of airstair support structure is servo-actuated 4. chopped-off head ladder pipe 5. of clutch pedal mounting bracket and is servo-actuated pedal
6. 7. chopped-off head support arm of servo-actuated pedal arm, the 8. chopped-off head rocking arm grade pedal 16. of grade ladder pipe 11 times of 9. chopped-off head pedal 10. times is locked
Determine 17. bushing of bolt；
Fig. 3 is servo-actuated pedal and support arm rocker arm body figure；
Fig. 4 is step sectional view；
Fig. 5 is locked out mechanism map.
Specific implementation mode
Please refer to Fig. 1 to Fig. 5, built-in flexible airstair of the present invention includes chopped-off head bearing 2, servo-actuated clutch pedal mounting bracket 3, head
The terraced pipe 4 of grade, is servo-actuated the terraced pipe 10 of pedal arm 6, chopped-off head support arm 7, chopped-off head rocking arm 8, chopped-off head pedal 9, secondary, is secondary servo-actuated pedal 5
Pedal 11, locking bolt 16, bushing 17.Wherein, the chopped-off head bearing 2, servo-actuated clutch pedal mounting bracket 3, locking bolt 16 and chopped-off head
The bearing of support arm 7 is fastened in airstair support structure 1, and chopped-off head ladder pipe 4 is connected by the shaft of its own and chopped-off head bearing 2
It connects, can be rotated around chopped-off head bearing 2；Chopped-off head rocking arm 8 is connected with chopped-off head ladder pipe 4, can be rotated around chopped-off head ladder pipe 4；Chopped-off head support arm 7 and head
Grade rocking arm 8 provides cross-brace to chopped-off head ladder pipe 4, and after expanding in place, chopped-off head rocking arm 8 and chopped-off head support arm 7 are convex by respectively top
The block risen limits the rotation of itself, provides stable support；Servo-actuated pedal 5 by own torque and servo-actuated clutch pedal mounting bracket 3 and
Servo-actuated pedal arm 6 is connected, and servo-actuated pedal arm 6 is connected with chopped-off head ladder pipe 4；Secondary ladder pipe 10 can exist along 9 inner wall of chopped-off head pedal
It is slided up and down inside chopped-off head ladder pipe 4, secondary ladder 10 upper end of pipe has flange, is stepped on chopped-off head when sliding into position of maximum extension
9 inner wall end surface of plate contacts, and is stopped；Bushing 17 is fixed on bottom secondary pedal 11.
Secondary terraced 10 width of pipe is suitable with 9 inner wall width of chopped-off head pedal, and there are clearance fit relationships for the two.
Job order is as follows when built-in airstair expansion：
1. spin locking bolt 16 counterclockwise, locking bolt moves downward, and is detached from bushing 17.
2. airstair and its terraced pipes at different levels connected are pulled out manually, ladder pipes at different levels and the pedal that is respectively connected around
The axis rotation that chopped-off head ladder pipe 4 is connected with chopped-off head bearing 2.At this time chopped-off head support arm 7 and chopped-off head rocking arm 8 be unfolded as shown in Figure 3 until
The block of maximum rating shown on the left of Fig. 3, respective top protrusion offsets.Simultaneously servo-actuated pedal arm 6 push be servo-actuated pedal 5 around
Servo-actuated clutch pedal mounting bracket 3 rotates, and is servo-actuated the rotation of pedal 5 extremely close to horizontal operating position.
3. pulling downward on fourth stage pedal 16, terraced pipes at different levels are pulled out downwards together with pedal, until ladder pipes at different levels shown in Fig. 4
Top is contacted with next stage pedal inner wall, reaches maximum unfolded state.
Job order is as follows when built-in airstair storage：
1. pushing up, until in the income chopped-off head ladder pipe 4 of secondary terraced pipe 10.
2. being lifted up chopped-off head support arm 7 and chopped-off head rocking arm 8, it is made to be rotated by Fig. 3 right directions, takes advantage of a situation and push ladder pipes at different levels
And pedal, the axis that ladder pipes at different levels are connected around chopped-off head ladder pipe 4 with chopped-off head bearing 2 together with pedal rotate, and take in internal body.
3. after ladder pipe income internal bodies at different levels, locking bolt 16 is rotated clockwise, locking bolt moves upwards insertion lining
In set 17, the locking to ladder pipes at different levels and pedal is completed.
Claims (2)
1. a kind of built-in flexible airstair, including chopped-off head bearing (2), servo-actuated clutch pedal mounting bracket (3), chopped-off head ladder pipe (4), servo-actuated pedal
(5), pedal arm (6), chopped-off head support arm (7), chopped-off head rocking arm (8), chopped-off head pedal (9), secondary ladder pipe (10), secondary pedal are servo-actuated
(11), locking bolt (16), bushing (17), it is characterised in that：Chopped-off head bearing (2), servo-actuated clutch pedal mounting bracket (3), locking bolt
(16) and the bearing of chopped-off head support arm (7) is fastened in airstair support structure (1), and chopped-off head ladder pipe (4) passes through its own
Shaft connect with chopped-off head bearing (2), can be rotated around chopped-off head bearing (2)；Chopped-off head rocking arm (8) is connected with chopped-off head ladder pipe (4), can be around
Chopped-off head ladder pipe (4) rotates；Chopped-off head support arm (7) provides cross-brace with chopped-off head rocking arm (8) to chopped-off head ladder pipe (4), after expanding in place,
Chopped-off head rocking arm (8) and chopped-off head support arm (7) limit the rotation of itself by the block of respectively top protrusion, provide stable support；With
Dynamic pedal (5) is connected by own torque with servo-actuated clutch pedal mounting bracket (3) and servo-actuated pedal arm (6), and pedal arm (6) is servo-actuated
It is connected with chopped-off head ladder pipe (4)；Secondary ladder pipe (10) can slide up and down along chopped-off head pedal (9) inner wall inside chopped-off head ladder pipe (4), secondary
Grade ladder pipe (10) upper end has flange, is contacted with chopped-off head pedal (9) inner wall end surface when sliding into position of maximum extension, by
Blocking；Bushing (17) is fixed on bottom secondary pedal (11).
2. a kind of built-in flexible airstair according to claim 1, it is characterised in that：Secondary ladder pipe (10) width with
Chopped-off head pedal (9) inner wall width is suitable, and there are clearance fit relationships for the two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721749812.1U CN207725644U (en) | 2017-12-14 | 2017-12-14 | A kind of built-in flexible airstair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721749812.1U CN207725644U (en) | 2017-12-14 | 2017-12-14 | A kind of built-in flexible airstair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207725644U true CN207725644U (en) | 2018-08-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721749812.1U Active CN207725644U (en) | 2017-12-14 | 2017-12-14 | A kind of built-in flexible airstair |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110861765A (en) * | 2019-12-06 | 2020-03-06 | 贵州贵航飞机设计研究所 | Novel airstair combined with cover |
-
2017
- 2017-12-14 CN CN201721749812.1U patent/CN207725644U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110861765A (en) * | 2019-12-06 | 2020-03-06 | 贵州贵航飞机设计研究所 | Novel airstair combined with cover |
| CN110861765B (en) * | 2019-12-06 | 2023-04-07 | 贵州贵航飞机设计研究所 | Airstairs combined with mouth cover |
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