CN103523214A - Internal locking device of actuating cylinder - Google Patents
Internal locking device of actuating cylinder Download PDFInfo
- Publication number
- CN103523214A CN103523214A CN201210232894.8A CN201210232894A CN103523214A CN 103523214 A CN103523214 A CN 103523214A CN 201210232894 A CN201210232894 A CN 201210232894A CN 103523214 A CN103523214 A CN 103523214A
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- China
- Prior art keywords
- side wall
- piston
- outer tube
- catch piston
- blocking device
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Abstract
The invention relates to the field of airplane design and provides an internal locking device of an actuating cylinder. According to the internal locking device, a first stopping piston is connected to the inner wall of the rear end of an outer barrel by a first stopping spring; in a normal state, a clamping groove is formed by the first stopping piston and the side wall of the outer barrel, a pressurizing nozzle is arranged on the side wall of the outer barrel and is close to the clamping groove formed by the first stopping piston and the side wall of the outer barrel, and a second stopping piston is connected to the inner wall of the front end of the outer barrel by a second stopping spring; in a normal state, a clamping groove is formed by the second stopping piston and the side wall of the outer barrel, a pressurizing nozzle is arranged on the side wall of the outer barrel and is close to the clamping groove formed by the second stopping piston and the side wall of the outer barrel; a piston rod penetrates through the rear end of the outer barrel and the first stopping piston; a locking device is fixedly connected with the front end of the piston rod; the rear end of the locking device can be clamped in the clamping groove formed by the first stopping piston and the side wall of the outer barrel; the front end of the locking device can be clamped in the clamping groove formed by the second stopping piston and the side wall of the outer barrel. The internal locking device of the actuating cylinder is simple in structure and light in weight.
Description
Technical field
The present invention relates to airplane design field, relate in particular to the built-in blocking device of a kind of retractable actuating cylinder.
Background technology
It is separated with down lock that the blocking device of existing undercarriage mostly is uplock, comparatively loaded down with trivial details to blimp and helicopter retractable landing gear.
Summary of the invention
The technical problem to be solved in the present invention: provide a kind of retractable actuating cylinder built-in blocking device, can simplify aircraft takeoffs and landings shelf structure.
Technical scheme of the present invention: the built-in blocking device of a kind of retractable actuating cylinder, comprise: urceolus, piston rod, the first stop spring, the first catch piston, blocking device, the second stop spring, the second catch piston, wherein, the first catch piston is connected on outer tube rear end inwall by the first stop spring, during normality, the first catch piston and outer tube side wall form draw-in groove, nearly the first catch piston of outer tube side wall and outer tube side wall form draw-in groove place and are provided with pressurization spout, the second catch piston is connected on outer cylinder front end inwall by the second stop spring, during normality, the second catch piston and outer tube side wall form draw-in groove, nearly the second catch piston of outer tube side wall and outer tube side wall form draw-in groove place and are provided with pressurization spout, a piston rod is through outer tube rear end and the first catch piston, described piston rod front end is fixedly connected with blocking device, described blocking device rear end can be connected in the draw-in groove of the first catch piston and outer tube side wall formation, described blocking device front end can be connected in the draw-in groove of the second catch piston and outer tube side wall formation.
Further, described pressurization spout is inlet nozzle.
Beneficial effect of the present invention: the present invention unites two into one alighting gear upper and lower lock by blocking device, is built in retractable actuating cylinder, reaches simple in structure, lightweight design goal.In addition, reduce the attachment point on aircaft configuration, reduced assembly error, improved shop characteristic.Particularly applicable to the aircraft that alighting gear installing space is less.
Accompanying drawing explanation
Fig. 1 is retractable actuating cylinder structural representation of the present invention.
The specific embodiment
Below the present invention is described in further details.Retractable actuating cylinder internal locking device is comprised of a retractable actuating cylinder and internal lock structure.
Scheme of the invention is referring to Fig. 1.
The built-in blocking device of retractable actuating cylinder, comprise: urceolus 1, piston rod 2, the first stop spring 3, the first catch piston 4, blocking device 5, the second stop spring 6, the second catch piston 7, wherein, the first catch piston 4 is connected on urceolus 1 rear end inwall by the first stop spring 3, during normality, the first catch piston 4 forms draw-in groove with urceolus 1 sidewall, nearly the first catch piston 4 of urceolus 1 sidewall forms draw-in groove place with urceolus 1 sidewall and is provided with pressurization spout A, the second catch piston 7 is connected in urceolus 1 front inner wall by the second stop spring 6, during normality, the second catch piston 7 forms draw-in groove with urceolus 1 sidewall, nearly the second catch piston 7 of urceolus 1 sidewall forms draw-in groove place with urceolus 1 sidewall and is provided with pressurization spout B and C, a piston rod 2 is through urceolus 1 rear end and the first catch piston 3, described piston rod 2 front ends are fixedly connected with blocking device 5, described blocking device 5 rear ends can be connected in the draw-in groove of the first catch piston 2 and urceolus 1 sidewall formation, described blocking device 5 front ends can be connected in the draw-in groove of the second catch piston 7 and urceolus 1 sidewall formation.
Further, described pressurization spout is inlet nozzle.
The present invention program's working process, referring to Fig. 1, in gear up or down state, retractable actuating cylinder is locked at the terminal of contraction or extended travel.The first catch piston 4 and blocking device 5 clampings, when catch piston 4 arrives abut, blocking device 5 is also just in time got back to the shaft shoulder place of urceolus 1, and the first stop spring 3 promotes the first catch piston 4 of clamping blocking device 5, makes it in locking state.When retractable actuating cylinder is by after locked, lock signal in " alighting gear micro-switch " output, disconnects hydraulic power source.While unblanking, inlet nozzle A pressurizes in retractable actuating cylinder, when retractable actuating cylinder internal pressure is greater than the coupling mechanism force of the first stop spring 3, promote first catch piston 4 compression the first stop springs 3, the first catch piston 4 exits from blocking device 5, and retractable actuating cylinder is unblanked, " alighting gear micro-switch " output unlocking signal, piston rod 2 shrinks or extends, gear up or put down.
The second catch piston 7 is similar with blocking device 5 clamping processes, at this, does not repeat.
The present invention unites two into one alighting gear upper and lower lock, is built in retractable actuating cylinder, reaches simple in structure, lightweight design goal.In addition, reduce the attachment point on aircaft configuration, reduced assembly error, improved shop characteristic.Particularly applicable to the aircraft that alighting gear installing space is less.Meanwhile, the present invention utilizes the boss on blocking device, by mechanical drive will lock, unlocking signal exports, and reaches overall requirement.Can be applied on blimp and helicopter retractable landing gear.
Claims (2)
1. the built-in blocking device of retractable actuating cylinder, it is characterized in that, comprise: urceolus, piston rod, the first stop spring, the first catch piston, blocking device, the second stop spring, the second catch piston, wherein, the first catch piston is connected on outer tube rear end inwall by the first stop spring, during normality, the first catch piston and outer tube side wall form draw-in groove, nearly the first catch piston of outer tube side wall and outer tube side wall form draw-in groove place and are provided with pressurization spout, the second catch piston is connected on outer cylinder front end inwall by the second stop spring, during normality, the second catch piston and outer tube side wall form draw-in groove, nearly the second catch piston of outer tube side wall and outer tube side wall form draw-in groove place and are provided with pressurization spout, a piston rod is through outer tube rear end and the first catch piston, described piston rod front end is fixedly connected with blocking device, described blocking device rear end can be connected in the draw-in groove of the first catch piston and outer tube side wall formation, described blocking device front end can be connected in the draw-in groove of the second catch piston and outer tube side wall formation.
2. the built-in blocking device of retractable actuating cylinder as claimed in claim 1, is characterized in that, described pressurization spout is inlet nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210232894.8A CN103523214A (en) | 2012-07-06 | 2012-07-06 | Internal locking device of actuating cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210232894.8A CN103523214A (en) | 2012-07-06 | 2012-07-06 | Internal locking device of actuating cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103523214A true CN103523214A (en) | 2014-01-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210232894.8A Pending CN103523214A (en) | 2012-07-06 | 2012-07-06 | Internal locking device of actuating cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103523214A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104354854A (en) * | 2014-10-29 | 2015-02-18 | 中航飞机起落架有限责任公司 | Multifunctional undercarriage jackstay device |
| CN104477379A (en) * | 2014-12-10 | 2015-04-01 | 四川凌峰航空液压机械有限公司 | Coordinated valve for uplock for retractable actuating cylinder |
| CN110844052A (en) * | 2019-11-04 | 2020-02-28 | 中航飞机起落架有限责任公司 | Undercarriage folding and unfolding actuator cylinder capable of being loaded in delayed mode |
| CN110878800A (en) * | 2018-09-05 | 2020-03-13 | 贵州新安航空机械有限责任公司 | Brake actuating cylinder |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29801444U1 (en) * | 1998-01-29 | 1999-08-12 | Fischer Reinhard | Locked working cylinder |
| CN201149071Y (en) * | 2007-08-25 | 2008-11-12 | 陕西燎原航空机械制造公司 | Locking apparatus of dynamoelectric deploying and retracting actuating cylinder |
| CN102367823A (en) * | 2011-11-03 | 2012-03-07 | 中航飞机起落架有限责任公司 | Automatically reversible air cylinder device with built-in mechanical lock |
| CN102425586A (en) * | 2011-12-21 | 2012-04-25 | 徐州重型机械有限公司 | Hydraulic cylinder, hydraulic system and engineering machine |
| CN102518621A (en) * | 2011-12-20 | 2012-06-27 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Actuator cylinder position locking and unlocking mechanism |
-
2012
- 2012-07-06 CN CN201210232894.8A patent/CN103523214A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29801444U1 (en) * | 1998-01-29 | 1999-08-12 | Fischer Reinhard | Locked working cylinder |
| CN201149071Y (en) * | 2007-08-25 | 2008-11-12 | 陕西燎原航空机械制造公司 | Locking apparatus of dynamoelectric deploying and retracting actuating cylinder |
| CN102367823A (en) * | 2011-11-03 | 2012-03-07 | 中航飞机起落架有限责任公司 | Automatically reversible air cylinder device with built-in mechanical lock |
| CN102518621A (en) * | 2011-12-20 | 2012-06-27 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Actuator cylinder position locking and unlocking mechanism |
| CN102425586A (en) * | 2011-12-21 | 2012-04-25 | 徐州重型机械有限公司 | Hydraulic cylinder, hydraulic system and engineering machine |
Non-Patent Citations (2)
| Title |
|---|
| 敖文伟: "《飞机起落架作动筒内锁研究与分析》", 《机械科学与技术》, vol. 31, no. 1, 31 January 2012 (2012-01-31), pages 130 - 134 * |
| 李艳军: "《飞机液压传动与控制》", 28 February 2009, 科学出版社, article "《锁定装置》", pages: 58-60 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104354854A (en) * | 2014-10-29 | 2015-02-18 | 中航飞机起落架有限责任公司 | Multifunctional undercarriage jackstay device |
| CN104477379A (en) * | 2014-12-10 | 2015-04-01 | 四川凌峰航空液压机械有限公司 | Coordinated valve for uplock for retractable actuating cylinder |
| CN110878800A (en) * | 2018-09-05 | 2020-03-13 | 贵州新安航空机械有限责任公司 | Brake actuating cylinder |
| CN110844052A (en) * | 2019-11-04 | 2020-02-28 | 中航飞机起落架有限责任公司 | Undercarriage folding and unfolding actuator cylinder capable of being loaded in delayed mode |
| CN110844052B (en) * | 2019-11-04 | 2021-04-30 | 中航飞机起落架有限责任公司 | Undercarriage folding and unfolding actuator cylinder capable of being loaded in delayed mode |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140122 |