CN108146619B - Control pull ring with emergency landing gear laying-down function - Google Patents
Control pull ring with emergency landing gear laying-down function Download PDFInfo
- Publication number
- CN108146619B CN108146619B CN201611097530.8A CN201611097530A CN108146619B CN 108146619 B CN108146619 B CN 108146619B CN 201611097530 A CN201611097530 A CN 201611097530A CN 108146619 B CN108146619 B CN 108146619B
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- CN
- China
- Prior art keywords
- pull ring
- rod assembly
- ring rod
- pull
- protective cover
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C25/00—Alighting gear
- B64C25/02—Undercarriages
- B64C25/08—Undercarriages non-fixed, e.g. jettisonable
- B64C25/10—Undercarriages non-fixed, e.g. jettisonable retractable, foldable, or the like
- B64C25/18—Operating mechanisms
- B64C25/26—Control or locking systems therefor
- B64C25/30—Control or locking systems therefor emergency actuated
Abstract
The invention provides a control pull ring with an emergency landing gear lowering function, which is characterized by comprising a protective cover (1), a microswitch (10), a spring (3), a pull ring box (4), a pull ring rod assembly and a guide pressure plate (8), wherein the pull ring rod assembly can move upwards along the guide pressure plate (8); the first end of the pull ring rod assembly is arranged in a pull ring box (4), a spring (3) is sleeved at the first end of the pull ring rod assembly, the upper end of the spring (3) is fixed on the first end of the pull ring rod assembly, the lower end of the spring (3) is pressed at the bottom of the pull ring box (4), an opening above the pull ring box (4) is sealed by a protective cover (1), the protective cover (1) is provided with a rotating shaft, the protective cover (1) can rotate around the rotating shaft after being stressed, and the upper end of the first end of the pull ring rod assembly is propped against the protective cover (1) in a non-working state; the lower part of the first end of the tab lever assembly passes out downwards through the aperture of the tab box (4).
Description
Technical Field
The invention relates to a control pull ring with an emergency landing gear lowering function, which aims at increasing the emergency landing gear lowering function of an original landing gear switch.
Technical Field
The undercarriage switch is a very important switch on an airplane, but the existing undercarriage switch does not have a good emergency undercarriage-down function, a control pull ring for emergency undercarriage-down function is added by utilizing the mature structural basis of the original undercarriage switch, and a stable and reliable mechanism is adopted to press a microswitch, so that an emergency undercarriage-down signal is switched on.
Disclosure of Invention
The invention aims to solve the problem of assisting in completing the function of emergency landing gear extension when an aircraft is in a flight state and a landing gear switch fails in function. In order to achieve the purpose, the invention provides a control pull ring with an emergency landing gear lowering function, which is characterized by comprising a protective cover (1), a microswitch (10), a spring (3), a pull ring box (4), a pull ring rod assembly and a guide pressure plate (8), wherein the pull ring rod assembly can move upwards along the guide pressure plate (8); the first end of the pull ring rod assembly is arranged in the pull ring box (4), the spring (3) is sleeved at the first end of the pull ring rod assembly, the upper end of the spring (3) is fixed on the first end of the pull ring rod assembly, the lower end of the spring is pressed at the bottom of the pull ring box (4), an opening above the pull ring box (4) is sealed by the protective cover (1), the protective cover (1) is provided with a rotating shaft, the protective cover (1) can rotate around the rotating shaft after being stressed, and the upper end of the first end of the pull ring rod assembly is propped against the protective cover (1) in a non-working state; the lower part of the first end of the pull-ring rod component penetrates out downwards from the hole of the pull-ring box (4), the micro switch (10) is matched with the second end of the pull-ring rod component, and the micro switch (10) is pressed after the pull-ring rod component moves upwards to a certain distance.
Preferably: the pull ring rod assembly comprises a pull ring rod (5) and a pull ring guide rail (6), the pull ring rod (5) is the first end of the pull ring rod assembly, the pull ring guide rail (6) is the second end of the pull ring rod assembly, the pull ring rod (5) is installed on the pull ring guide rail (6) through a rivet (7), the rivet (7) is fixed at the lower end of the pull ring rod (5), a guide groove is formed in the pull ring guide rail (6), and the rivet (7) moves up and down in the guide groove. The structure that the pull ring rod (5) and the pull ring guide rail (6) can slide is adopted, so that the whole structure is compact, and the space can be saved.
Preferably: the pull ring guide rail structure is characterized by further comprising a reed (9), the reed (9) is arranged on the guide pressure plate (8), a limiting hole matched with the reed (9) is formed in the pull ring guide rail (6), the reed (9) is pressed on the pull ring guide rail (6) in a non-working state, and the reed is inserted into the limiting hole in a working state. The addition of the leaf spring (9) is mainly used for providing a feedback function when the pull-tab rod assembly is in a non-working state to a working state.
The invention has the advantages that: the landing gear switch is added with the function of emergency landing gear extension, so that the landing gear can be ensured to be safely extended when the landing gear switch fails, and the landing gear switch is simple in structure, reliable in connection and simple in assembly process operation.
Drawings
FIG. 1 is a schematic diagram of the inventive structure.
Fig. 2 is a schematic diagram of the inventive structure in the on-mode.
Detailed Description
Referring to fig. 1, a control tab with an emergency landing gear function is shown, and the control tab with the emergency landing gear function is characterized by comprising a protective cover 1, a micro switch 10, a spring 3, a tab box 4, a tab rod assembly and a guide pressure plate 8, wherein the tab rod assembly can move upwards along the guide pressure plate 8; the first end of the pull ring rod assembly is installed in the pull ring box 4, the spring 3 is sleeved at the first end of the pull ring rod assembly, the upper end of the spring 3 is fixed on the first end of the pull ring rod assembly, the lower end of the spring is pressed at the bottom of the pull ring box 4, an opening above the pull ring box 4 is sealed through the protective cover 1, the protective cover 1 is provided with a rotating shaft, the protective cover 1 can rotate around the rotating shaft after being stressed, and the upper end of the first end of the pull ring rod assembly is propped against the protective cover 1 in a non-working state; the lower part of the first end of the tab lever assembly passes out downwards from the hole in the tab box 4, the micro switch 10 cooperates with the second end of the tab lever assembly, and the micro switch 10 is pressed after the tab lever assembly has moved upwards to a certain distance.
Preferably, the following components: the pull ring rod assembly comprises a pull ring rod 5 and a pull ring guide rail 6, the pull ring rod 5 is the first end of the pull ring rod assembly, the pull ring guide rail 6 is the second end of the pull ring rod assembly, the pull ring rod 5 is installed on the pull ring guide rail 6 through a rivet 7, the rivet 7 is fixed at the lower end of the pull ring rod 5, a guide groove is formed in the pull ring guide rail 6, and the rivet 7 moves up and down in the guide groove.
When the aircraft is in a flying state and the undercarriage switch function fails, the protective cover 1 needs to be pulled open at the moment, the pull ring rod 5 upwards pops out for a certain distance under the action of the spring 3, then the pull ring rod 5 is continuously upwards pulled out, the pull ring rod 5 advances to the top point of the guide groove in the pull ring guide rail 6, the pull ring guide rail 6 is driven to integrally move upwards under the action of the rivet, and the function of pressing the micro switch is realized when the pull ring guide rail 6 moves upwards.
Preferably, the following components: the pull ring guide rail structure is characterized by further comprising a reed 9, the reed 9 is arranged on the guide pressing plate 8, a limiting hole matched with the reed 9 is formed in the pull ring guide rail 6, the reed 9 is pressed on the pull ring guide rail 6 in a non-working state, and the reed is inserted into the limiting hole in a working state.
Claims (2)
1. A control pull ring with an emergency landing gear lowering function is characterized by comprising a protective cover (1), a microswitch (10), a spring (3), a pull ring box (4), a pull ring rod assembly and a guide pressure plate (8), wherein the pull ring rod assembly can move upwards along the guide pressure plate (8); the first end of the pull ring rod assembly is installed in a pull ring box (4), a spring (3) is sleeved at the first end of the pull ring rod assembly, the upper end of the spring (3) is fixed to the first end of the pull ring rod assembly, the lower end of the spring (3) is pressed at the bottom of the pull ring box (4), an opening above the pull ring box (4) is sealed through a protective cover (1), the protective cover (1) is provided with a rotating shaft, the protective cover (1) can rotate around the rotating shaft after being stressed, and in a non-working state, the upper end of the first end of the pull ring rod assembly is propped against the protective cover (1); the lower part of the first end of the pull-ring rod assembly penetrates out of a hole of a pull-ring box (4) downwards, a micro switch (10) is matched with the second end of the pull-ring rod assembly, and the micro switch (10) is pressed after the pull-ring rod assembly moves upwards to a certain distance;
the pull ring rod assembly comprises a pull ring rod (5) and a pull ring guide rail (6), the pull ring rod (5) is the first end of the pull ring rod assembly, the pull ring guide rail (6) is the second end of the pull ring rod assembly, the pull ring rod (5) is installed on the pull ring guide rail (6) through a rivet (7), the rivet (7) is fixed at the lower end of the pull ring rod (5), a guide groove is formed in the pull ring guide rail (6), and the rivet (7) moves up and down in the guide groove.
2. The control pull ring with the function of putting down the landing gear in emergency according to claim 1, further comprising a spring plate (9), wherein the spring plate (9) is arranged on the guide pressure plate (8), a limiting hole matched with the spring plate (9) is arranged on the pull ring guide rail (6), the spring plate (9) is pressed on the pull ring guide rail (6) in a non-working state, and is inserted into the limiting hole in a working state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611097530.8A CN108146619B (en) | 2016-12-02 | 2016-12-02 | Control pull ring with emergency landing gear laying-down function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611097530.8A CN108146619B (en) | 2016-12-02 | 2016-12-02 | Control pull ring with emergency landing gear laying-down function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108146619A CN108146619A (en) | 2018-06-12 |
| CN108146619B true CN108146619B (en) | 2022-07-15 |
Family
ID=62470167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611097530.8A Active CN108146619B (en) | 2016-12-02 | 2016-12-02 | Control pull ring with emergency landing gear laying-down function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108146619B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2930114Y (en) * | 2006-06-29 | 2007-08-01 | 武汉电信器件有限公司 | Photoelectric module pull ring type de-locking device |
| CN202258955U (en) * | 2011-07-19 | 2012-05-30 | 吕宗伟 | Improved pull switch structure |
| CN202526791U (en) * | 2012-04-26 | 2012-11-14 | 中汽客汽车零部件（厦门）有限公司 | Fire emergency escape device |
| US9102403B2 (en) * | 2013-12-02 | 2015-08-11 | Embraer S.A. | Emergency gravity free-fall deployment systems for retractable aircraft landing gear assemblies |
| CN105667808B (en) * | 2014-11-19 | 2019-01-01 | 中国航空工业集团公司西安飞机设计研究所 | A kind of manual kickoff mechanism of emergency |
| CN205049358U (en) * | 2015-10-10 | 2016-02-24 | 陕西飞机工业（集团）有限公司 | Emergent testing tool of putting undercarriage |
-
2016
- 2016-12-02 CN CN201611097530.8A patent/CN108146619B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN108146619A (en) | 2018-06-12 |
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