CN203793637U - Rocker arm of cabin door of undercarriage - Google Patents
Rocker arm of cabin door of undercarriage Download PDFInfo
- Publication number
- CN203793637U CN203793637U CN201420155340.7U CN201420155340U CN203793637U CN 203793637 U CN203793637 U CN 203793637U CN 201420155340 U CN201420155340 U CN 201420155340U CN 203793637 U CN203793637 U CN 203793637U
- Authority
- CN
- China
- Prior art keywords
- hydraulic actuator
- rocking arm
- rocker arm
- expansion link
- sheet
- 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.)
- Expired - Lifetime
Links
- 210000005069 ears Anatomy 0.000 claims description 18
- 230000033001 locomotion Effects 0.000 claims description 5
- 238000005452 bending Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Classifications
-
- 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
Landscapes
- Power-Operated Mechanisms For Wings (AREA)
Abstract
The utility model relates to a rocker arm of a cabin door of an undercarriage. The rocker arm comprises a rocker arm 1, a single lug 2 of a hydraulic actuator cylinder and the hydraulic actuator cylinder 3, wherein the hydraulic actuator cylinder 3 is provided with an expansion link 31 of the hydraulic actuator cylinder, the rocker arm 1 is provided with double lugs 11 of the rocker arm and a slot 12 of the rocker arm, the single lug 2 of the hydraulic actuator cylinder is hinged with the double lugs 11 of the rocker arm on the rocker arm 1, and the end part of the single lug 2 of the hydraulic actuator cylinder is rigidly connected with the expansion link 31 of the hydraulic actuator cylinder. The rocker arm provided by the utility model can eliminate additional bending moment to the rocker arm of the cabin door of the hydraulic actuator cylinder, eliminate stress concentration, improve the service life of the structure and reduce the weight of the structure, and has a great practical value.
Description
Technical field
The utility model relates to a kind of undercarriage hatch door rocking arm, particularly relates to a kind of undercarriage hatch door rocking arm being driven by hydraulic actuator.
Background technology
Undercarriage hatch door rocking arm is connected with landing gear compartment door face board, and hydraulic actuator drives rocking arm to drive undercarriage door to rotate, and realizes opening and closing of undercarriage door.Undercarriage door rocking arm Main Function is bear the large concentrated load of hydraulic actuator and provide rigid support to landing gear compartment door face board.Conventional method of designing is at ears of rocking arm one side design, for connecting the monaural sheet of hydraulic actuator, realizes being connected and power transmission of hydraulic actuator and hatch door rocking arm.But owing to there is certain spacing between hydraulic actuator line of action of force and the rocking arm plane of symmetry, hydraulic actuator application force can produce additional bending moment to rocking arm, causes stress raisers, reduce structure service life.
Utility model content
For the problems referred to above, the utility model provides a kind of undercarriage hatch door rocking arm, comprises rocking arm 1, hydraulic actuator monaural sheet 2 and hydraulic actuator 3.Wherein, hydraulic actuator 3 is provided with hydraulic actuator expansion link 31, has designed rocking arm ears sheet 11 and rocking arm otch 12 on rocking arm 1.The auricle spacing of rocking arm ears sheet 11 is less than the width of described rocking arm otch 12, but is more than or equal to the thickness of hydraulic actuator monaural sheet 2.The width of rocking arm otch 12 is more than or equal to the diameter of hydraulic actuator expansion link 31, and length is more than or equal to the range of hydraulic actuator expansion link 31, so that hydraulic actuator expansion link 31 can be at rocking arm open slot 12 internal motions.Rocking arm ears sheet 11 phase hinges on hydraulic actuator monaural sheet 2 and rocking arm 1, its plane of symmetry and rocking arm 1 plane of symmetry are coplanar.The end of hydraulic actuator monaural sheet 2 and described hydraulic actuator expansion link 31 one end are rigidly connected.
The utility model can be eliminated the additional bending moment of hydraulic actuator to hatch door rocking arm, eliminates stress concentrated, improves structure service life, and reduces structural weight.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present utility model.
Fig. 2 is the structural representation of rocking arm described in the utility model.
The specific embodiment
Below by specific embodiment, also by reference to the accompanying drawings the utility model is described in further detail.Concrete implementation process is as described below:
Description of reference numerals: 1. rocking arm; 2. hydraulic actuator monaural sheet; 3. hydraulic actuator; 11. rocking arm ears sheets; 12. rocking arm open slots; 31. hydraulic actuator expansion links.
As shown in Figure 1, undercarriage hatch door rocking arm described in the utility model comprises rocking arm 1, hydraulic actuator monaural sheet 2 and hydraulic actuator 3.Hydraulic actuator 3 is provided with hydraulic actuator expansion link 31; rocking arm 1 is provided with rocking arm ears sheet 11 and rocking arm open slot 12(as shown in Figure 2); wherein; the auricle spacing of rocking arm ears sheet 11 is less than the width of rocking arm open slot 12; but be more than or equal to the thickness of hydraulic actuator monaural sheet 2; so that hydraulic actuator ears sheet 2 can insert the gap between rocking arm ears sheet 11, and with rocking arm ears sheet 2 phase hinges.The width of rocking arm open slot 12 is greater than or equals the diameter of hydraulic actuator expansion link 31, and length is more than or equal to the range of hydraulic actuator expansion link 31, so that they can be at rocking arm open slot 12 internal motions.Hydraulic actuator monaural sheet 2 and rocking arm ears sheet 11 phase hinges, and its end and hydraulic actuator expansion link 31 are rigidly connected.
For guaranteeing the smooth and easy of relative motion between hinge place auricle, generally; the auricle spacing of rocking arm ears sheet 11 is greater than the thickness of hydraulic actuator monaural sheet 2, between rocking arm ears sheet 11 and hydraulic actuator monaural sheet 2, leave gap, gap width is 5～7mm preferably.
Equally, for guaranteeing the smooth and easy of rocking arm open slot 12 and 31 relative motions of hydraulic actuator expansion link, generally; the width of rocking arm open slot 12 is greater than the diameter of hydraulic actuator expansion link 31; when hydraulic actuator expansion link 31 moves to rocking arm open slot 12 inside; leave gap between rocking arm open slot 12 and hydraulic actuator expansion link 31, gap width is 3～5mm preferably.
The radical function of rocking arm ears sheet 11 and rocking arm open slot 12 is and hydraulic actuator monaural sheet 2 phase hinges, and be hydraulic actuator monaural sheet 2 and the reserved activity space of hydraulic actuator expansion link 31, its particular location, size, shape on rocking arm 1 depends primarily on reference position, the size and dimension of hydraulic actuator monaural sheet 2 and hydraulic actuator expansion link 31, do not affecting under the prerequisite of its function, also can be based on the utility model know-why, according to actual conditions and design, need rationally to determine, and be not limited to shown in accompanying drawing.
The utility model can be eliminated the generation of hydraulic actuator to hatch door rocking arm additional bending moment, avoid the appearance of stress concentration phenomenon, improve structure service life, and increase owing to removing quantity of material, can reduce structural weight, this is very important for aeroplane structure design.The method deisgn product cycle is short, and check intensity is simple, improves design efficiency, is easy to apply, and has larger practical value.
Claims (3)
1. a undercarriage hatch door rocking arm, comprises rocking arm (1), hydraulic actuator monaural sheet (2) and hydraulic actuator (3), and described hydraulic actuator (3) is provided with hydraulic actuator expansion link (31), it is characterized in that:
Described rocking arm (1) is provided with rocking arm ears sheet (11) and rocking arm otch (12); The auricle spacing of described rocking arm ears sheet (11) is less than the width of described rocking arm otch (12), but is more than or equal to the thickness of described hydraulic actuator monaural sheet (2); The width of described rocking arm otch (12) is more than or equal to the diameter of described hydraulic actuator expansion link (31), length is more than or equal to the range of hydraulic actuator expansion link (31), so that hydraulic actuator expansion link (31) can be at rocking arm open slot (12) internal motion;
Rocking arm ears sheet (11) phase hinge on described hydraulic actuator monaural sheet (2) and described rocking arm (1), and its plane of symmetry and rocking arm (1) plane of symmetry is coplanar, the end of described hydraulic actuator monaural sheet (2) and described hydraulic actuator expansion link (31) are rigidly connected.
2. undercarriage hatch door rocking arm according to claim 1, is characterized in that: the gap between described rocking arm ears sheet (11) and hydraulic actuator monaural sheet (2) is 5～7mm.
3. undercarriage hatch door rocking arm according to claim 1 and 2, it is characterized in that: when hydraulic actuator expansion link (31) moves to described rocking arm open slot (12) inside, the gap between the inwall of rocking arm open slot (12) and hydraulic actuator expansion link (31) is 3～5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420155340.7U CN203793637U (en) | 2014-04-01 | 2014-04-01 | Rocker arm of cabin door of undercarriage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420155340.7U CN203793637U (en) | 2014-04-01 | 2014-04-01 | Rocker arm of cabin door of undercarriage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203793637U true CN203793637U (en) | 2014-08-27 |
Family
ID=51375877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420155340.7U Expired - Lifetime CN203793637U (en) | 2014-04-01 | 2014-04-01 | Rocker arm of cabin door of undercarriage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203793637U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107512387A (en) * | 2017-07-04 | 2017-12-26 | 西安飞机工业（集团）有限责任公司 | A kind of undercarriage hatch door pull bar determines power process unit and adjusts dress method |
| CN111003198A (en) * | 2019-12-27 | 2020-04-14 | 中国航空工业集团公司西安飞机设计研究所 | Airplane cabin door connecting rod force fixing method and device |
| CN111907720A (en) * | 2020-07-27 | 2020-11-10 | 中国航发沈阳发动机研究所 | Floating pull rod of reverse thrust device |
| CN113859545A (en) * | 2021-10-18 | 2021-12-31 | 中航通飞华南飞机工业有限公司 | Fire-extinguishing type airplane water-feeding cabin door |
-
2014
- 2014-04-01 CN CN201420155340.7U patent/CN203793637U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107512387A (en) * | 2017-07-04 | 2017-12-26 | 西安飞机工业（集团）有限责任公司 | A kind of undercarriage hatch door pull bar determines power process unit and adjusts dress method |
| CN107512387B (en) * | 2017-07-04 | 2020-04-03 | 西安飞机工业（集团）有限责任公司 | Fixed force process device and adjusting and installing method for pull rod of cabin door of aircraft landing gear |
| CN111003198A (en) * | 2019-12-27 | 2020-04-14 | 中国航空工业集团公司西安飞机设计研究所 | Airplane cabin door connecting rod force fixing method and device |
| CN111907720A (en) * | 2020-07-27 | 2020-11-10 | 中国航发沈阳发动机研究所 | Floating pull rod of reverse thrust device |
| CN111907720B (en) * | 2020-07-27 | 2022-11-22 | 中国航发沈阳发动机研究所 | Floating pull rod of reverse thrust device |
| CN113859545A (en) * | 2021-10-18 | 2021-12-31 | 中航通飞华南飞机工业有限公司 | Fire-extinguishing type airplane water-feeding cabin door |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140827 |
|
| CX01 | Expiry of patent term |