WO2008102067A1 - Vérin a dispositif de verrouillage intègre - Google Patents
Vérin a dispositif de verrouillage intègre Download PDFInfo
- Publication number
- WO2008102067A1 WO2008102067A1 PCT/FR2007/001769 FR2007001769W WO2008102067A1 WO 2008102067 A1 WO2008102067 A1 WO 2008102067A1 FR 2007001769 W FR2007001769 W FR 2007001769W WO 2008102067 A1 WO2008102067 A1 WO 2008102067A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- rod
- cylinder
- bolt
- deployment
- barrel
- 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.)
- Ceased
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C13/00—Control systems or transmitting systems for actuating flying-control surfaces, lift-increasing flaps, air brakes, or spoilers
- B64C13/24—Transmitting means
- B64C13/26—Transmitting means without power amplification or where power amplification is irrelevant
- B64C13/28—Transmitting means without power amplification or where power amplification is irrelevant mechanical
- B64C13/34—Transmitting means without power amplification or where power amplification is irrelevant mechanical using toothed gearing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H25/24—Elements essential to such mechanisms, e.g. screws, nuts
- F16H25/2454—Brakes; Rotational locks
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/18—Mechanical movements
- Y10T74/18568—Reciprocating or oscillating to or from alternating rotary
- Y10T74/18576—Reciprocating or oscillating to or from alternating rotary including screw and nut
- Y10T74/18704—Means to selectively lock or retard screw or nut
Definitions
- the present invention relates to a jack comprising an integrated mechanical locking system and is more particularly directed to a jack intended to equip an actuating system of a turbojet thrust reverser.
- the role of a thrust reverser during the landing of an aircraft is to improve the braking capacity of the latter by redirecting forward at least a portion of the thrust generated by the turbojet engine.
- the inverter obstructs the gas ejection nozzle and directs the ejection flow of the engine towards the front of the nacelle, thereby generating a counter-thrust which is added to the braking of the wheels of the engine. 'plane.
- the structure of an inverter comprises movable covers movable between, on the one hand, an extended position in which they open in the nacelle a passage intended for the deflected flow, and on the other hand, a position retraction in which they close this passage.
- These movable hoods may furthermore fulfill a deflection function or simply the activation of other deflection means.
- the movable cowls slide along rails so that when backing up during the opening phase, they discover deflection blade grids disposed in the thickness of the nacelle.
- a linkage system connects the movable hood to blocking doors that expand within the ejection channel and block the output in direct flow.
- each movable hood pivots so as to block the flow and deflect it and is therefore active in this reorientation.
- these mobile covers are actuated by hydraulic, pneumatic or electric cylinders.
- these cylinders must be equipped with locks to ensure their retention in the retracted position and prevent accidental deployment of a movable cover of the thrust reverser.
- locks There are generally two types of locks, called primary locks, mounted in duplicate, and tertiary lock respectively.
- the two primary locks hold each mobile cowl in the retracted position and resume the efforts to translate said movable cowl.
- These locks are redundant to cover a possible failure of one of the primary locks, each lock being sized to fully resume the sum of efforts to translate the movable cover.
- the tertiary lock does not take any effort in nominal operation. Its function is that of an emergency locking system which is requested to resume efforts to translate the movable hood only in case of failure of the two primary locks.
- the object of the present invention is to propose an improved cylinder integrating a locking system that can serve as a tertiary lock and therefore consists of a jack comprising, on the one hand, a rod adapted to be driven in translation by a drive system, and secondly, a system for locking the deployment of the rod (so-called tertiary lock) comprising at least one bolt movably mounted between an engagement position in which it constitutes a means of abutment of the rod in the direction of its deployment.
- the bolt is associated with a barrel system having a first stable position in which it allows the maintenance of the bolt in its position of engagement and a second stable position in which it allows the locking of the bolt in its release position, said barrel system being arranged so power switch alternately from its first stable position to its second stable position under the action of the animated rod a slight rearward movement before deployment and the end of retraction stroke.
- the association of the bolt with a barrel system allows the realization of a fully mechanical locking system does not require electrical control means, the locking system being automatically locked and unlocked when the rod follows the appropriate sequence, c that is, includes a slight backward movement deployment or an over-run when it is retracted. This inversion of direction before deployment is an important aspect of improving the safety of the locking and unlocking of the jack.
- the bolt is mounted against an elastic return means.
- the elastic return means tends to return the bolt in its release position.
- the barrel system constitutes a mobile stop means of the bolt.
- the bolt is made in the form of a pivoting hook having a first end adapted to constitute an abutment means for the deployed rod and a second end adapted to abut against the barrel.
- the second end of the bolt is beveled.
- the barrel has at least one beveled surface complementary to the second end of the bolt and by which the latter abuts.
- the actuation of the rod is effected by means of a screw / nut drive system, the rod being locked in rotation.
- the nut is located on the rod.
- the nut is integrated in the rod and is in the form of an internal thread.
- the jack is an electric jack.
- Figure 1 is a schematic sectional representation of a cylinder according to the invention comprising a locking system in the engagement position before deployment.
- FIG. 2 is a schematic representation of the jack of FIG.
- Figure 3 is a schematic representation of the cylinder of Figure 1 being deployed after unlocking.
- Figure 4 is a schematic representation of the cylinder of Figure 1 in the locking position after retraction.
- a jack 1 according to the invention comprises a rod 2 locked in rotation and having a nut 3 at the beginning of the rod 2 so as to form a base having a shoulder 8 circumferential and is adapted to cooperate with a threaded screw 4 housed inside the rod 2.
- the threaded screw 4 is rotated by an electric motor 5 associated with a reducer 6.
- the rod 2 being locked in rotation, the movement of the threaded screw 4 is converted into a translational movement allowing the deployment or retraction of the rod 2 according to the direction of rotation of the threaded screw 2.
- the cylinder 1 also includes an integrated mechanical locking system.
- This locking system comprises a pair of lateral hooks 9 having a first end forming a return 10 of the hook oriented towards the rod 2 and a second end 11 having a bevelled surface also oriented towards the rod 2.
- Each hook 9 is pivotally mounted about an axis 12 to tilt between an engagement position ( Figures 1 and 4) in which the return 10 comes against the rod 2 and constitutes a stop for the shoulder 8 in the direction of deployment of the rod, and a release position in which the return 10 is spaced from the rod 2 and allows its deployment.
- Each hook 9 is also mounted against an elastic return means 13 tending to return it to its disengaged position, said elastic return means being fixed substantially at the return 10 of each hook 9.
- each hook 9 is associated with a barrel system 14 disposed in alignment with the rod 2 slightly behind the nut 3 serving as a base for said rod 2, said barrel system 14 having a smooth central recess allowing the passage of the threaded screw 4 and its connection to the gearbox 6.
- the barrel 14 comprises a bearing head 15 mounted on a spring rocker 16 allowing the passage of the bearing head 15 between a withdrawal position and a forward position in the direction of the rod 2.
- the head of support 15 has a contact surface 17 disposed facing the base of the rod 2 and a bevelled peripheral surface 18 oriented to be a complementary surface of the bevelled surface presented by the end 11 of each hook 9.
- each hook 9 is in the position of engagement against the shoulder 8 of the base of the rod 2 and the bearing head 15 of the barrel system 14 is in the advanced position such that its beveled peripheral surface 18 is in contact with the bevelled surface of the end 11 of each hook 9.
- each elastic return means 13 of each hook 9 tends to rotate it to its disengagement position.
- the pivoting of each hook 9 is prevented by the bevelled peripheral surface 18 of the barrel system 14 which serves as a stop at the end 11 of each hook 9 and thus prevents pivoting.
- a deployment of the rod 2 begins with a slight movement of withdrawal thereof. In doing so, the base of the rod 2 presses on the support head 15 of the barrel system 14 and tilts the latter in its second stable position in which the bearing head 15 is set back from its initial position. .
- the beveled peripheral surface 18 is spaced from the end 11 of each hook 9 and can no longer serve as a stop.
- each hook 9 thus pivots about its axis 12 towards its disengagement position, the return 10 of each hook 9 away from the rod 2 and then releasing the shoulder 8 .
- Locking cylinder 1 will be done in the same way. From the previous position, as shown in Figure 3.
- the electric motor 5 rotates in a direction corresponding to the retraction of the rod 2.
- the backward movement continues slightly so that the base of the rod 2 come and press the support head 15 of the barrel system 14 causing its tilting back to its first stable position in which the bearing head 15 slightly forward with respect to its previous position.
- the rod then returns to its normal end position. In doing so, the bevelled peripheral surface 18 abuts against the end 11 of each hook 9 and forces its pivoting about the corresponding axis 12.
- each hook 9 then returns to its engagement position in which it constitutes a stop means against the shoulder 8 adapted to prevent the deployment of the rod 2.
- each hook is automatically tilted between its engagement position and its release position under the action of the rod 2 animated by a slight backward movement.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Aviation & Aerospace Engineering (AREA)
- Lock And Its Accessories (AREA)
- Transmission Devices (AREA)
- Actuator (AREA)
Abstract
Description
Claims
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP07866442A EP2121435A1 (fr) | 2007-02-22 | 2007-10-26 | Vérin a dispositif de verrouillage intègre |
| BRPI0721335-2A BRPI0721335A2 (pt) | 2007-02-22 | 2007-10-26 | Atuador |
| US12/527,584 US20100089191A1 (en) | 2007-02-22 | 2007-10-26 | Actuator with integrated locking device |
| CA002678308A CA2678308A1 (fr) | 2007-02-22 | 2007-10-26 | Verin a dispositif de verrouillage integre |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0701255 | 2007-02-22 | ||
| FR0701255A FR2913080B1 (fr) | 2007-02-22 | 2007-02-22 | Verin a dispositif de verrouillage integre |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2008102067A1 true WO2008102067A1 (fr) | 2008-08-28 |
Family
ID=38543748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR2007/001769 Ceased WO2008102067A1 (fr) | 2007-02-22 | 2007-10-26 | Vérin a dispositif de verrouillage intègre |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US20100089191A1 (fr) |
| EP (1) | EP2121435A1 (fr) |
| CN (1) | CN101600623A (fr) |
| BR (1) | BRPI0721335A2 (fr) |
| CA (1) | CA2678308A1 (fr) |
| FR (1) | FR2913080B1 (fr) |
| RU (1) | RU2009134843A (fr) |
| WO (1) | WO2008102067A1 (fr) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2475588A (en) * | 2009-11-19 | 2011-05-25 | Aker Subsea Ltd | Actuator with fail safe mode |
| FR2976040A1 (fr) * | 2011-06-06 | 2012-12-07 | Messier Bugatti Dowty | Actionneur telescopique. |
| WO2015059234A1 (fr) * | 2013-10-24 | 2015-04-30 | Sagem Defense Securite | Dispositif d'actionnement pour déplacer un capot mobile d'un inverseur de poussée |
| EP2930104A1 (fr) * | 2014-04-08 | 2015-10-14 | Messier-Bugatti-Dowty | Procédé de manoeuvre de trappes de soutes d'aéronef, et actionneur faisant application. |
| WO2019002285A1 (fr) * | 2017-06-29 | 2019-01-03 | Zodiac Actuation Systems | Dispositif de verrouillage pour actionneur elctromecanique et actionneur electromecanique comprenant ce dispositif |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2943988B1 (fr) * | 2009-04-03 | 2011-06-10 | Dcns | Harpon d'ancrage par exemple d'un aeronef et systeme d'ancrage comportant un tel harpon. |
| US8713911B2 (en) * | 2010-12-15 | 2014-05-06 | Woodward Hrt, Inc. | System and method for operating a thrust reverser for a turbofan propulsion system |
| US9188081B2 (en) * | 2012-04-10 | 2015-11-17 | Honeywell International Inc. | Thrust reverser actuator with primary lock |
| US9109536B2 (en) | 2013-03-14 | 2015-08-18 | Woodward Hrt, Inc. | Engine thrust reverser lock |
| FR3008741B1 (fr) * | 2013-07-17 | 2017-04-28 | Aircelle Sa | Systeme inverseur de poussee electrique pour nacelle de moteur d'aeronef et nacelle de moteur d'aeronef ainsi equipee |
| US10543903B2 (en) * | 2016-08-31 | 2020-01-28 | The Boeing Company | Actuators for high lift devices on aircraft |
| EP3404245B1 (fr) * | 2017-05-19 | 2020-04-15 | Goodrich Actuation Systems Limited | Système de verrouillage tertiaire pour un inverseur de poussée |
| US11441514B2 (en) | 2018-10-02 | 2022-09-13 | Woodward, Inc. | Tertiary lock |
| US10865738B2 (en) | 2019-02-27 | 2020-12-15 | Woodward, Inc. | Traveling finger lock for an actuator |
| CN112173070B (zh) * | 2020-09-25 | 2022-02-08 | 兰州万里航空机电有限责任公司 | 一种电动舵面锁机构 |
| US11788490B1 (en) | 2022-12-05 | 2023-10-17 | Woodward, Inc. | Traveling finger lock for an actuator |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2500537A1 (fr) * | 1981-02-24 | 1982-08-27 | Astech | Dispositif de securite pour inverseur de poussee associe a un moteur a reaction d'aeronef |
| FR2614939A1 (fr) * | 1987-05-06 | 1988-11-10 | Astech | Moteur a reaction pourvu d'un inverseur de poussee |
| US5224342A (en) * | 1992-02-13 | 1993-07-06 | Lair Jean Pierre | Latching and sealing arrangement for jet engine thrust reverser |
| EP0890727A1 (fr) * | 1997-07-10 | 1999-01-13 | Hispano-Suiza Aérostructures | Inverseur de poussée résistante aux impacts |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5134731A (en) * | 1991-02-07 | 1992-08-04 | Invacare Corporation | Adjustable bed having adjustable height legs with synchronization feature |
| US5299853A (en) * | 1993-02-02 | 1994-04-05 | Hoover Universal, Inc. | Vehicle seat assembly with linear actuator |
| US5778733A (en) * | 1995-10-11 | 1998-07-14 | P. L. Porter Co. | Spinning nut linear mechanical lock |
| US20050160846A1 (en) * | 2004-01-20 | 2005-07-28 | Yi-Chung Chiang | Linear actuator |
-
2007
- 2007-02-22 FR FR0701255A patent/FR2913080B1/fr not_active Expired - Fee Related
- 2007-10-26 EP EP07866442A patent/EP2121435A1/fr not_active Withdrawn
- 2007-10-26 WO PCT/FR2007/001769 patent/WO2008102067A1/fr not_active Ceased
- 2007-10-26 US US12/527,584 patent/US20100089191A1/en not_active Abandoned
- 2007-10-26 RU RU2009134843/11A patent/RU2009134843A/ru unknown
- 2007-10-26 CA CA002678308A patent/CA2678308A1/fr not_active Abandoned
- 2007-10-26 BR BRPI0721335-2A patent/BRPI0721335A2/pt not_active Application Discontinuation
- 2007-10-26 CN CNA2007800511378A patent/CN101600623A/zh active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2500537A1 (fr) * | 1981-02-24 | 1982-08-27 | Astech | Dispositif de securite pour inverseur de poussee associe a un moteur a reaction d'aeronef |
| FR2614939A1 (fr) * | 1987-05-06 | 1988-11-10 | Astech | Moteur a reaction pourvu d'un inverseur de poussee |
| US5224342A (en) * | 1992-02-13 | 1993-07-06 | Lair Jean Pierre | Latching and sealing arrangement for jet engine thrust reverser |
| EP0890727A1 (fr) * | 1997-07-10 | 1999-01-13 | Hispano-Suiza Aérostructures | Inverseur de poussée résistante aux impacts |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8523142B2 (en) | 2009-11-19 | 2013-09-03 | Aker Subsea Limited | Actuator with pre-determined failure mode |
| GB2475588B (en) * | 2009-11-19 | 2011-10-05 | Aker Subsea Ltd | Actuator with pre-determined failure mode |
| NO339440B1 (no) * | 2009-11-19 | 2016-12-12 | Aker Solutions Ltd | Aktuator med forutbestemt feil-modus |
| GB2475588A (en) * | 2009-11-19 | 2011-05-25 | Aker Subsea Ltd | Actuator with fail safe mode |
| US8794088B2 (en) | 2011-06-06 | 2014-08-05 | Messier-Bugatti-Dowty | Telescopic actuator |
| EP2532583A3 (fr) * | 2011-06-06 | 2012-12-26 | Messier-Bugatti-Dowty | Actionneur télescopique |
| CN102815396A (zh) * | 2011-06-06 | 2012-12-12 | 梅西耶-布加蒂-道提公司 | 可伸缩的致动器 |
| FR2976040A1 (fr) * | 2011-06-06 | 2012-12-07 | Messier Bugatti Dowty | Actionneur telescopique. |
| WO2015059234A1 (fr) * | 2013-10-24 | 2015-04-30 | Sagem Defense Securite | Dispositif d'actionnement pour déplacer un capot mobile d'un inverseur de poussée |
| FR3012532A1 (fr) * | 2013-10-24 | 2015-05-01 | Sagem Defense Securite | Dispositif d'actionnement pour deplacer un capot mobile d'un inverseur de poussee |
| US9709003B2 (en) | 2013-10-24 | 2017-07-18 | Sagem Defense Securite | Actuator device for moving a movable cowl of a thrust reverser |
| EP2930104A1 (fr) * | 2014-04-08 | 2015-10-14 | Messier-Bugatti-Dowty | Procédé de manoeuvre de trappes de soutes d'aéronef, et actionneur faisant application. |
| WO2019002285A1 (fr) * | 2017-06-29 | 2019-01-03 | Zodiac Actuation Systems | Dispositif de verrouillage pour actionneur elctromecanique et actionneur electromecanique comprenant ce dispositif |
| FR3068421A1 (fr) * | 2017-06-29 | 2019-01-04 | Zodiac Actuation Systems | Dispositif de verrouillage pour actionneur electromecanique |
| US11396933B2 (en) | 2017-06-29 | 2022-07-26 | Zodiac Actuation Systems | Locking device for electromechanical actuator and electromechanical actuator comprising this device |
Also Published As
| Publication number | Publication date |
|---|---|
| US20100089191A1 (en) | 2010-04-15 |
| BRPI0721335A2 (pt) | 2014-02-25 |
| RU2009134843A (ru) | 2011-03-27 |
| FR2913080A1 (fr) | 2008-08-29 |
| FR2913080B1 (fr) | 2009-04-03 |
| EP2121435A1 (fr) | 2009-11-25 |
| CA2678308A1 (fr) | 2008-08-28 |
| CN101600623A (zh) | 2009-12-09 |
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