CN106275392A - A kind of multistage pressurized strut locking device - Google Patents
A kind of multistage pressurized strut locking device Download PDFInfo
- Publication number
- CN106275392A CN106275392A CN201610809539.0A CN201610809539A CN106275392A CN 106275392 A CN106275392 A CN 106275392A CN 201610809539 A CN201610809539 A CN 201610809539A CN 106275392 A CN106275392 A CN 106275392A
- Authority
- CN
- China
- Prior art keywords
- snap ring
- wall
- inwall
- sleeve
- sliding sleeve
- 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.)
- Granted
Links
Classifications
-
- 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
Abstract
The invention provides a kind of multistage pressurized strut locking device, including end cap, urceolus, intermediate cylinder, inner core, slide up and down sleeve, sub supersolutions lock barrel, lock snap ring, upper and lower limited location snap ring, attachment screw, upper and lower flexible member, upper and lower steel ball up and down.The steel ball latch mechanism of high-mechanic is combined by the present invention with multistage pressurized strut, this mechanism is made both to have possessed bearing capacity under lock-out state strong, possess again pressurized strut to launch stroke length, realize reusable function in reliable locking on the basis of unlocking, it is adaptable to Reusable Launch Vehicles landing supporting leg.This mechanism processing simultaneously is simple, easy for installation, can realize automatic deploying and retracting, and service life is long.
Description
Technical field
The present invention relates to a kind of multistage pressurized strut locking device, for reusable vehicle landing supporting leg.
Background technology
Along with the transmitting of Control System for Reusable Launch Vehicle and reclaim successfully, Control System for Reusable Launch Vehicle landing supporting leg is answered
With, in order to reduce the extra aerodynamic drag that the landing supporting leg being installed on vehicle surface is brought, usual landing supporting leg needs to shrink
In the middle of shell, when vehicle will land, open landing supporting leg by gas/liquid pressure type of belt drive.Simultaneously as vehicle
In landing mission, landing supporting leg can be produced bigger shock loading, therefore to guarantee landing supporting leg energy under load effect
Enough secure support vehicles, prevent vehicle overturning, it is necessary to reliably locked by locking device after landing supporting leg is fully extended,
After vehicle landing recovery completes, it is possible to the unblock being completed landing supporting leg by gas/liquid pressure type of belt drive is packed up.Therefore, right
For Reusable Launch Vehicles landing supporting leg, its must possess high-mechanic, highly reliable, launch stroke length, reusable etc.
Characteristic.
Traditional vehicle landing usual structure of supporting leg jack is complex, and it mainly releases initial by priming system
Lock-out state, then uses and is positioned at the torsionspring realization expansion launched in stand hinge, it can be seen that, traditional landing supporting leg
The not reproducible use of jack.And generally do not possess automatic locking and unblock for traditional multistage retractable actuating cylinder
Function, it is impossible to meet the requirement of landing supporting leg high bearing capacity.For traditional retractable actuating cylinder, the most do not possess many
Level launches the advantage launching stroke length brought.
Summary of the invention
The present invention is to solve problem of the prior art, it is provided that one can reliably lock and unlock, be provided simultaneously with lock
Determine high-mechanic under state, pressurized strut launches stroke length, reusable gas/liquid pressure transmission multistage pressurized strut locking device.
The present invention provide multistage pressurized strut locking device include end cap, urceolus, intermediate cylinder, inner core, slide up and down sleeve,
Sub supersolutions lock barrel, lock snap ring, upper and lower limited location snap ring, attachment screw, upper and lower flexible member, upper and lower steel ball up and down.
Described upper sliding sleeve is arranged in the barrel of end cap and urceolus composition, and upper sliding sleeve inwall has two-layer platform
Rank, upper sliding sleeve inwall is topped bar to hold and is formed matched in clearance, the leave from office of upper sliding sleeve inwall with described upper unblock sleeve outer wall
Rank end forms matched in clearance with described upper locking snap ring outer wall, and upper sliding sleeve lower end has multiple radial distribution for laying steel
The through hole of ball and the tapped through hole being distributed side by side, described attachment screw is by this tapped through hole and described intermediate cylinder upper end radially
The through hole arranged is connected fixing to upper sliding sleeve and intermediate cylinder, and the inwall at upper sliding sleeve is topped bar and held and the described upper limit
It is disposed with flexible member and upper locking snap ring between the snap ring of position.
Described upper solution lock barrel is the cylinder with step cylindrical, and upper solution lock barrel lower end has outer wall thread, the upper limit
Position snap ring is connected with the lower end of upper solution lock barrel by inner thread.
Described lower slipping sleeve is arranged in the barrel of intermediate cylinder, and lower slipping sleeve inwall has two-layer step, glides
Moving sleeve inwall end of topping bar forms matched in clearance with described lower unblock sleeve outer wall, lower slipping sleeve inwall get out of a predicament or an embarrassing situation end with
Described lower locking snap ring outer wall forms matched in clearance, and lower slipping sleeve inwall lower end is disposed with female thread, and inner core passes through outer wall
Screw thread is connected to a fixed with lower slipping sleeve female thread, and lower slipping sleeve bottom has multiple radial distribution for laying lower steel ball
Through hole.
Described lower solution lock barrel is the section cylinder in "Ji" type, and described lower limit snap ring is threaded in down
Solve lock barrel outer wall at, lower slipping sleeve top bar end with lower limit snap ring between be disposed with lower flexible member and
Lower locking snap ring.
It is disposed with movable sealing packing ring between the barrel of described upper sliding sleeve outer wall lower end and end cap and urceolus composition, on
Be disposed with static seal packing ring between sliding sleeve inwall lower end and intermediate cylinder outer wall, the outer wall big step end of lower solution lock barrel with in
Between cylinder inwall between be disposed with movable sealing packing ring, be disposed with movable sealing packing ring between outer tube inner wall lower end and intermediate cylinder outer wall,
Movable sealing packing ring it is disposed with between intermediate cylinder inwall lower end and inner tank theca.
The inwall place of topping bar of described lower slipping sleeve and lock and determine to have multiple radial direction in snap ring, lower locking snap ring
The through hole of distribution, intermediate cylinder and inner core upper end are disposed with four symmetrical through holes, offer the purpose side of being of these through holes
Just gas liquid circulation.
It is provided with guidance tape at described upper sliding sleeve outer wall, at lower slipping sleeve outer wall, is provided with lower guidance tape, guide
Band provides for sliding sleeve and radially supports.
Described flexible member up and down uses cylindrical spring or butterfly spring.
The present invention has the beneficial effects that: combined with multistage pressurized strut by the steel ball latch mechanism of high-mechanic so that this mechanism
Both possessed under lock-out state bearing capacity strong, possess again pressurized strut launch stroke length, reliable locking with unlock on the basis of real
Existing reusable function, it is adaptable to Reusable Launch Vehicles landing supporting leg.This mechanism processing simultaneously is simple, easy for installation,
Can realize automatic deploying and retracting, service life is long.
Accompanying drawing explanation
Fig. 1 is the structure composition schematic diagram of this multistage pressurized strut locking device.
Fig. 2 is the inner core deployed configuration schematic diagram of this multistage pressurized strut locking device.
Fig. 3 is the full deployed configuration schematic diagram of this multistage pressurized strut locking device.
Fig. 4 is the upper sliding sleeve structural representation of this multistage pressurized strut locking device.
Fig. 5 is the lower slipping sleeve structural representation of this multistage pressurized strut locking device.
Fig. 6 is the intermediate cylinder structural representation of this multistage pressurized strut locking device.
Fig. 7 is the inner tube structure schematic diagram of this multistage pressurized strut locking device.
Detailed description of the invention
The invention will be further described below in conjunction with the accompanying drawings.
The invention provides a kind of multistage pressurized strut locking device, this device overall structure is as it is shown in figure 1, inner core launches knot
Structure as in figure 2 it is shown, full deployed configuration as it is shown on figure 3, include end cap 1, urceolus 17, intermediate cylinder 18, inner core 19, upper sliding sleeve 5,
Lower slipping sleeve 11, upper solution lock barrel 2, lower solution lock barrel 13, upper locking snap ring 6, lower locking snap ring 14, upper limit snap ring 7, under
Limited location snap ring 16, attachment screw 9, upper flexible member 3, lower flexible member 12, upper steel ball 8, lower steel ball 15.
Upper sliding sleeve 5 as shown in Figure 4, is arranged in the barrel of end cap 1 and urceolus 17 composition, upper sliding sleeve 5 and cylinder
Be disposed with guidance tape 4 and the movable sealing packing ring of radially supporting role between wall, upper sliding sleeve 5 inwall respectively with upper unblock
The outer wall of sleeve 2 and the outer wall of upper locking snap ring 6 form matched in clearance so that above solving lock barrel 2 can be with axle with upper locking snap ring 6
To free motion, under the effect of flexible member 3, realize steel ball latch mechanism lock and unlock, upper sliding sleeve 5 inwall lower end with
It is disposed with static seal packing ring between intermediate cylinder 18 outer wall.Tapped through hole that attachment screw 9 is arranged by upper sliding sleeve 5 lower end and
The through hole that intermediate cylinder 18 upper end is arranged is connected fixing with intermediate cylinder 18 for upper sliding sleeve 5, upper solution lock barrel 2 and upper limit snap ring
7 are interfixed by screw thread.
Lower slipping sleeve 11 is as it is shown in figure 5, be arranged in the barrel of intermediate cylinder 18, in lower slipping sleeve 11 and intermediate cylinder 18
Be disposed with the guidance tape 10 of radially supporting role between wall, lower slipping sleeve 11 inwall respectively with the outer wall of lower solution lock barrel 13
And the outer wall of lower locking snap ring 14 forms matched in clearance so that the lower lock barrel 13 that solves can axially free be transported with lower locking snap ring 14
Dynamic, under the effect of flexible member 12, realize steel ball latch mechanism lock and unlock, the lower slipping sleeve 11 inwall place of topping bar offers
Having radially-arranged through hole, it is simple to gas liquid free flow during multistage pressurized strut folding and unfolding, lower slipping sleeve 11 passes through screw thread with interior
Cylinder 19 is fixing to be connected, and is disposed with movable sealing packing ring, lower solution lock barrel 13 and lower limit between lower solution lock barrel 13 and intermediate cylinder 18
Snap ring 16 is mutually permanently connected by screw thread, between urceolus 17 lower end and intermediate cylinder 18 outer wall and intermediate cylinder 18 lower end and inner core
Movable sealing packing ring it is disposed with between 19 outer walls.
Upper locking snap ring 6, lower locking snap ring 14 offer radially-arranged through hole, facilitate gas liquid to circulate, this be in order to
Ensure lock or in releasing process lock snap ring both sides pressure keep identical, thus avoid lock snap ring pressure at both sides poor
The locking mechanism fault caused.
As shown in accompanying drawing 6 and accompanying drawing 7, intermediate cylinder 18 and inner core 19 upper end offer four symmetrical through holes, and this is
Owing to when multistage pressurized strut carries out folding and unfolding, facilitating gas liquid can be entered urceolus 17 and intermediate cylinder 18, intermediate cylinder by passage
In annular chamber between 18 and inner core 19, and then reach the purpose of folding and unfolding intermediate cylinder 18 and inner core 19.
The operation principle of this mechanism is when landing supporting leg needs to launch, and starts gas/liquid pressure system, end cap 1 upper end fills
Entering gas liquid, promote the lower lock barrel 13 that solves to move, lower solution lock barrel 13 and then drive lower slipping sleeve 11 start shipment with inner core 19 1
Dynamic, during until the steel ball 15 in lower slipping sleeve 11 moves to the groove of intermediate cylinder 18 lower end, at flexible member 12 and lower lock
Determining to enter groove under the promotion of snap ring 14, complete locking, lower locking snap ring 14 moves to terminate, such as Fig. 2 at lower limit snap ring 16
Shown in.Now inner core 19 interfixes with intermediate cylinder 18, forms an entirety, thus one acts as expansion motion, until upper slip
When steel ball 8 in sleeve 5 moves to the groove of urceolus 17 lower end, flexible member 3 and on lock snap ring 6 promotion under enter
Groove, completes locking, and upper locking snap ring 6 moves to terminate at upper limit snap ring 7 subsequently, and the most multistage pressurized strut locking device reaches
To entirely extending lock-out state, as shown in Figure 3.
When landing supporting leg needs to shrink, inner core lower end it is filled with gas liquid, promotes lower solution lock barrel 13 to move, simultaneously
Driving lower locking snap ring 14 to move by lower limit snap ring 16, compression elastic element 12, so that steel ball 15 is from intermediate cylinder 18
Groove in come off, complete to unlock, hereafter the lower lock barrel 13 that solves drives lower slipping sleeve 11 and inner core 19 1 to act as contractile motion,
Until lower solution lock barrel 13 touches solution lock barrel 2, and upper solution lock barrel 2 and upper locking snap ring 6 is driven to move together so that
Steel ball 8 comes off from the groove of urceolus 17, and the most multistage pressurized strut locking device unlocks completely, in the continuation transmission of gas/liquid pressure
Full contraction state is finally moved under effect.
The concrete application approach of the present invention is a lot, and the above is only the preferred embodiment of the present invention, it is noted that for
For those skilled in the art, under the premise without departing from the principles of the invention, it is also possible to make some improvement, this
A little improvement also should be regarded as protection scope of the present invention.
Claims (5)
1. a multistage pressurized strut locking device, it is characterised in that: include end cap (1), urceolus (17), intermediate cylinder (18), inner core
(19), slide up and down sleeve (5,11), sub supersolutions lock barrel (2,13), up and down lock snap ring (6,14), upper and lower limited location snap ring (7,
16), attachment screw (9), upper and lower flexible member (3,12), upper and lower steel ball (8,15)；
Described upper sliding sleeve (5) is arranged in the barrel that end cap (1) and urceolus (17) form, upper sliding sleeve (5) inwall
Having two-layer step, upper sliding sleeve (5) inwall is topped bar to hold and is formed matched in clearance with described upper solution lock barrel (2) outer wall, on
Sliding sleeve (5) inwall is got out of a predicament or an embarrassing situation to hold and is formed matched in clearance, upper sliding sleeve (5) lower end with described upper locking snap ring (6) outer wall
Have multiple radial distribution to lead to for the through hole laying steel ball (8) and the tapped through hole being distributed side by side, described attachment screw (9)
Upper sliding sleeve (5) is fixed by the through hole crossing this tapped through hole and described intermediate cylinder (18) upper end radial arrangement with intermediate cylinder (18)
Connecting, the inwall at upper sliding sleeve (5) is topped bar and is disposed with upper elastic unit between end and described upper limit snap ring (7)
Part (3) and upper locking snap ring (6)；
Described upper solution lock barrel (2) is the cylinder with step cylindrical, and upper solution lock barrel (2) lower end has outer wall thread, on
Limited location snap ring (7) is connected with the lower end of upper solution lock barrel (2) by inner thread；
Described lower slipping sleeve (11) is arranged in the barrel of intermediate cylinder (18), and lower slipping sleeve (11) inwall has two-layer platform
Rank, lower slipping sleeve (11) inwall is topped bar to hold and is formed matched in clearance, lower slider set with described lower solution lock barrel (13) outer wall
Cylinder (11) inwall is got out of a predicament or an embarrassing situation to hold and is formed matched in clearance, under lower slipping sleeve (11) inwall with described lower locking snap ring (14) outer wall
End is disposed with female thread, and inner core (19) is connected to a fixed with lower slipping sleeve (11) female thread by outer wall thread, lower slider set
Cylinder (11) bottom has multiple radial distribution for laying the through hole of lower steel ball (15)；
Described lower solution lock barrel (13) is the section cylinder in "Ji" type, and described lower limit snap ring (16) is threaded
At the outer wall of lower solution lock barrel (13), set successively between end and lower limit snap ring (16) topping bar of lower slipping sleeve (11)
It is equipped with lower flexible member (12) and lower locking snap ring (14).
Multistage pressurized strut locking device the most according to claim 1, it is characterised in that: described upper sliding sleeve (5) is outward
Movable sealing packing ring, upper sliding sleeve (5) inwall lower end it is disposed with between the barrel that wall lower end and end cap (1) and urceolus (17) form
And it is disposed with static seal packing ring between intermediate cylinder (18) outer wall, the outer wall big step end of lower solution lock barrel (13) and intermediate cylinder (18)
Inwall between be disposed with movable sealing packing ring, be disposed with movable sealing pad between urceolus (17) inwall lower end and intermediate cylinder (18) outer wall
Circle, is disposed with movable sealing packing ring between intermediate cylinder (18) inwall lower end and inner core (19) outer wall.
Multistage pressurized strut locking device the most according to claim 1, it is characterised in that: described lower slipping sleeve (11)
The inwall place of topping bar and lock and determine to have multiple radially-arranged through hole, intermediate cylinder in snap ring (6), lower locking snap ring (14)
(18) it is disposed with four symmetrical through holes with inner core (19) upper end.
Multistage pressurized strut locking device the most according to claim 1, it is characterised in that: described upper sliding sleeve (5) is outward
Being provided with at wall at guidance tape (4), lower slipping sleeve (11) outer wall and be provided with lower guidance tape (10), guidance tape provides for sliding sleeve
Radially support.
Multistage pressurized strut locking device the most according to claim 1, it is characterised in that: described flexible member up and down (3,
12) cylindrical spring or butterfly spring are used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610809539.0A CN106275392B (en) | 2016-09-08 | 2016-09-08 | A kind of multistage pressurized strut locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610809539.0A CN106275392B (en) | 2016-09-08 | 2016-09-08 | A kind of multistage pressurized strut locking device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106275392A true CN106275392A (en) | 2017-01-04 |
| CN106275392B CN106275392B (en) | 2018-10-16 |
Family
ID=57710483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610809539.0A Active CN106275392B (en) | 2016-09-08 | 2016-09-08 | A kind of multistage pressurized strut locking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106275392B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106704433A (en) * | 2017-01-12 | 2017-05-24 | 南京航空航天大学 | Bidirectional buffer with driving function |
| CN108032997A (en) * | 2017-10-31 | 2018-05-15 | 中航通飞研究院有限公司 | A kind of latch mechanism |
| CN110871911A (en) * | 2019-12-03 | 2020-03-10 | 哈尔滨工业大学 | Follow-up locking mechanism applied to landing support mechanism of reusable carrier |
| CN112483509A (en) * | 2020-12-12 | 2021-03-12 | 江西洪都航空工业集团有限责任公司 | Aircraft cabin door actuator cylinder with internal locking mechanism |
| CN112815057A (en) * | 2021-02-03 | 2021-05-18 | 四川凌峰航空液压机械有限公司 | Redundancy locking backup mechanical lock electromechanical actuator |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB458005A (en) * | 1935-03-28 | 1936-12-10 | Elektronmetall Gmbh | Improvements in and relating to adjustable struts for air-craft |
| 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 |
| CN201582248U (en) * | 2009-11-26 | 2010-09-15 | 中国航空工业集团公司沈阳发动机设计研究所 | Mechanical self-locking actuating cylinder structure |
| CN102162509A (en) * | 2011-03-25 | 2011-08-24 | 成都飞机工业（集团）有限责任公司 | Locking device of electric actuating cylinder |
| CN102198866A (en) * | 2011-04-22 | 2011-09-28 | 南京航空航天大学 | Telescopic landing leg expanding mechanism for planetary probe |
| US20120056035A1 (en) * | 2010-09-08 | 2012-03-08 | Goodrich Corporation | Shrink shock strut locking mechanism for retractable aircraft landing gear |
| CN103935525A (en) * | 2014-04-24 | 2014-07-23 | 南京航空航天大学 | Buffering landing leg of reusable launch vehicle and buffering method of buffering landing leg |
-
2016
- 2016-09-08 CN CN201610809539.0A patent/CN106275392B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB458005A (en) * | 1935-03-28 | 1936-12-10 | Elektronmetall Gmbh | Improvements in and relating to adjustable struts for air-craft |
| 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 |
| CN201582248U (en) * | 2009-11-26 | 2010-09-15 | 中国航空工业集团公司沈阳发动机设计研究所 | Mechanical self-locking actuating cylinder structure |
| US20120056035A1 (en) * | 2010-09-08 | 2012-03-08 | Goodrich Corporation | Shrink shock strut locking mechanism for retractable aircraft landing gear |
| CN102162509A (en) * | 2011-03-25 | 2011-08-24 | 成都飞机工业（集团）有限责任公司 | Locking device of electric actuating cylinder |
| CN102198866A (en) * | 2011-04-22 | 2011-09-28 | 南京航空航天大学 | Telescopic landing leg expanding mechanism for planetary probe |
| CN103935525A (en) * | 2014-04-24 | 2014-07-23 | 南京航空航天大学 | Buffering landing leg of reusable launch vehicle and buffering method of buffering landing leg |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106704433A (en) * | 2017-01-12 | 2017-05-24 | 南京航空航天大学 | Bidirectional buffer with driving function |
| CN106704433B (en) * | 2017-01-12 | 2019-05-14 | 南京航空航天大学 | A kind of bidirectional buffer with driving function |
| CN108032997A (en) * | 2017-10-31 | 2018-05-15 | 中航通飞研究院有限公司 | A kind of latch mechanism |
| CN108032997B (en) * | 2017-10-31 | 2022-09-09 | 中航通飞研究院有限公司 | Lock mechanism |
| CN110871911A (en) * | 2019-12-03 | 2020-03-10 | 哈尔滨工业大学 | Follow-up locking mechanism applied to landing support mechanism of reusable carrier |
| CN110871911B (en) * | 2019-12-03 | 2022-05-24 | 哈尔滨工业大学 | Follow-up locking mechanism applied to landing support mechanism of reusable carrier |
| CN112483509A (en) * | 2020-12-12 | 2021-03-12 | 江西洪都航空工业集团有限责任公司 | Aircraft cabin door actuator cylinder with internal locking mechanism |
| CN112815057A (en) * | 2021-02-03 | 2021-05-18 | 四川凌峰航空液压机械有限公司 | Redundancy locking backup mechanical lock electromechanical actuator |
| CN112815057B (en) * | 2021-02-03 | 2024-03-01 | 四川凌峰航空液压机械有限公司 | Redundancy locking backup mechanical lock electromechanical actuator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106275392B (en) | 2018-10-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106275392A (en) | A kind of multistage pressurized strut locking device | |
| US4907760A (en) | Contracting landing gear shock strut | |
| CN106347639B (en) | A kind of electric multi-stage pressurized strut folding and unfolding locking device | |
| GB1563273A (en) | Shock absorber | |
| CN103899585B (en) | The hydraulic control system of a kind of pair of oil cylinder sequential telescopic, suspension arm mechanism and crane | |
| CN103910059B (en) | One can carry pressurized strut | |
| EP3012481B1 (en) | Z-head piston for dual chamber shock struts | |
| US20150344131A1 (en) | Two-stage secondary piston for landing gear | |
| US3237726A (en) | Shock absorber lock | |
| US4284255A (en) | Shock absorbers and shock absorber struts, notably for aerodyne landing gear | |
| US2868482A (en) | Retractable landing gear | |
| CN105460236A (en) | Unfolding and folding locking device for spatial foldable mechanism and spatial foldable mechanism | |
| US10384769B2 (en) | Two stage strut allowing low initial compression load | |
| CN208198811U (en) | A kind of more landform undercarriage additional structures of unmanned plane | |
| CN104500501A (en) | Hydraulic floatingsnap ring lock | |
| CN105172919B (en) | A kind of anterior buffer unit of semitrailer | |
| US2360535A (en) | Hydraulic locking mechanism | |
| US9061759B2 (en) | Cam-operated bi-directional shock absorber damper | |
| CN108706496A (en) | A kind of aircraft Multi-stage hydraulic jack piston unidirectional protection valve arrangement | |
| US2856180A (en) | Compressible landing gear | |
| US20210214074A1 (en) | Multi-actor damping systems and methods | |
| CN109268342B (en) | Actuator cylinder with two-end steel ball mechanical lock | |
| CN114810902B (en) | Telescopic aircraft landing gear buffer | |
| CN111721159B (en) | Heavy-load parallel state conversion device | |
| CN207246152U (en) | A kind of oil cylinder with jack catchs type mechanical locking device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |