CN104477379B - Retractable actuating cylinder uplock coordination valve - Google Patents
Retractable actuating cylinder uplock coordination valve Download PDFInfo
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- CN104477379B CN104477379B CN201410756802.5A CN201410756802A CN104477379B CN 104477379 B CN104477379 B CN 104477379B CN 201410756802 A CN201410756802 A CN 201410756802A CN 104477379 B CN104477379 B CN 104477379B
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Abstract
A kind of retractable actuating cylinder uplock coordination valve that the present invention proposes, it is desirable to provide a kind of reliable operation, collaborates scope big, it is possible to avoid latch hook to produce the uplock coordination valve of the abnormal phenomenas such as friction with backplate lock ring.The technical scheme is that: when hydraulic oil enters in pressurized strut from the ozzle B that unblanks radial and normal to start stack shell axle head, steel ball (1) axially collaborates ozzle A oil-in gluing, sealing with collaborating on an end face under the effect of hydraulic coupling, collaborate ozzle A in backplate pressurized strut, hydraulic oil can only promote uplock piston (6) to move right, when move distance reaches to collaborate stroke, nut (8) contacts with baffle ring (7) and drives valve (2) body of rod to move right, valve (2) is driven to drive steel ball (1) motion, depart from and collaborate ozzle A oil-in, now, collaborate ozzle A and ozzle B intercommunication of unblanking, complete to collaborate valve function and uplock system realizes first unblanking to put afterwards the coordination of backplate sequentially.
Description
Technical field
The present invention is about the coordination valve being applied in Landing Gear System on uplock, more particularly, the present invention relate to the novel coordination valve of one that can be integrated in uplock.
Background technology
In prior art, the internal two ends of retractable actuating cylinder are pinned by mechanical lock in retractable position equipped with mechanical lock, undercarriage；Upper and lower lock microswitch detects whether undercarriage is locked really.The fault of Landing Gear System directly affects flight safety.The structure of undercarriage is complex, and particularly extension and retraction system relates to undercarriage, hydraulic pressure and the several systems on machine such as electrically.When undercarriage normally puts down, hydraulic oil is entered by pressurized strut B mouth, promotes piston rod to stretch out and through A mouth oil return.When emergency extension undercarriage, hydraulic oil is entered pressurized strut by C mouth.When packing up undercarriage, hydraulic oil is entered by pressurized strut A mouth, promotes piston rod to shrink and through B mouth oil return.Piston rod movement is to the end of stroke, and the mechanical lock at strut pressurized strut two ends is locked by piston rod.Each retractable actuating cylinder has two microswitch: landing gear uplock microswitch and undercarriage down lock microswitch, they are controlled by retractable actuating cylinder piston rod.Microswitch indicate undercarriage put down locked；Undercarriage is in folding and unfolding campaign；Locked three positions packed up by undercarriage.Time gear down, landing gear uplock is unblanked.Putting down the terminal of stroke, retractable actuating cylinder is locked by mechanical lock, and undercarriage down lock is locked, makes undercarriage down lock microswitch change.In real work, pressurized strut drives uplock to unblank, and retractable actuating cylinder drives jack to do folding and unfolding campaign simultaneously, and for rolling constraint between lock ring and latch hook, the motion of latch hook is to be caused by lock ring collision.After lock ring touches latch hook, latch hook is followed lock ring and is synchronized with the movement, and drives whole latch mechanism to link simultaneously.Lock ring drives uplock to lock after colliding latch hook, on the contrary the process of putting down.Uplock is hydraulic control executive component, and it primarily serves the purpose of: one is that backplate is locked in retracted position；Two backplates when being to ensure that flight will not produce unacceptable deformation because of aerodynamic loading, and three is the coordination sequence requirement first unblanking to put afterwards backplate.After the major function of the coordination valve in uplock is to ensure that hydraulic oil makes uplock first unblank, hydraulic oil leads to backplate again and controls pressurized strut, makes not produce the abnormal phenomenas such as friction between the lock ring on the latch hook of uplock and backplate.
Traditional uplock coordination valve mainly includes shown sealing steel ball 1 and the valve 2 being connected with steel ball, spring base 4 that valve back-up ring 5 and valve are connected and return spring 3.Being limited by product structure owing to traditional uplock collaborates valve, when collaborating valve function and completing, i.e. during the intercommunication of A, B ozzle, the angle that latch hook is opened is very limited, is allowed to easily occur the abnormal phenomenas such as friction with lock ring.Due to traditional uplock, to collaborate valve shorter owing to collaborating stroke, during A, B ozzle intercommunication, the angle very limited uplock open angle that latch hook is opened is 5 degree 50 points, latch hook and the lock ring on backplate easily occur friction to produce abnormal phenomena, therefore, traditional uplock collaborates valve can not meet use requirement.
Summary of the invention
The task of the present invention is to provide a kind of simple in construction, reliable operation, the big uplock of the scope that collaborates is with collaborating valve, during so that bigger angle opened by uplock, just make backplate generation action, it is to avoid latch hook produces the uplock coordination valve of the abnormal phenomenas such as friction with backplate lock ring.
nullThe technical solution adopted for the present invention to solve the technical problems is: a kind of retractable actuating cylinder uplock coordination valve，Including: collaborate cylinder with lock ring and latch hook、Coaxially it is assemblied in and collaborates in cylinder，In being connected in piston rod linkage valve 2 and sealing collaborates the steel ball 1 of ozzle A、The baffle ring 7 being connected with piston rod and the nut 8 being connected with valve、Valve return spring 3 and for limiting the back-up ring 5 of spring base 4，It is characterized in that: piston rod linkage valve 2 sequentially passes through the uplock piston 6 built-in spring base of cavity 4、Return spring 3 and baffle ring 7 axially extend to the length direction of piston rod hollow channel，Composition lock coordination valve，When hydraulic oil from radial direction Vertical Coordination move cylinder cylinder end unblank ozzle B enter association pressurized strut hydraulic cavities time，Steel ball 1 axially collaborates ozzle A oil-in gluing, sealing with collaborating on an end face under the effect of hydraulic coupling，Collaborate ozzle A collaborating in cylinder towards backplate，Hydraulic oil can only promote uplock piston 6 to move right，When move distance reaches to collaborate stroke，Connect firmly the nut 8 on piston rod free end contact with the baffle ring 7 being positioned at bottom plunger shaft and drive valve 2 body of rod to move right，Valve 2 is driven to drive steel ball 1 to move，Depart from and collaborate ozzle A oil-in，Now，Collaborate ozzle A and ozzle B intercommunication of unblanking，Complete to collaborate valve function and uplock system realizes first unblanking to put afterwards the coordination of backplate sequentially.
Further, any one value collaborated in the piston movement stroke that stroke can be uplock of coordination valve.
The present invention has the advantages that compared to prior art
Simple in construction, reliable operation.The present invention, in the case of product overall structure is constant, by the stroke of valve in adjustment pressurized strut piston rod, thus realizes making to collaborate the change of stroke, inside pressurized strut, use the form of back-up ring, make spring base spacing as shown in Figure 1, spring pressurized, makes to collaborate valve and has return function.Owing to the spendable length of uplock piston rod cavity is bigger, therefore, uplock collaborates the stroke of valve can be arbitrarily devised in the stroke of uplock, the angle that the most corresponding uplock latch hook is opened arbitrarily can regulate from the zero to maximum angle of unblanking, thus can effectively avoid latch hook to produce the generation of the abnormal phenomenas such as friction with backplate lock ring.
Any one value collaborated in the piston movement stroke that stroke can be uplock of the coordination valve of the present invention, collaborates scope big.Collaborate stroke mainly to be determined by the length of the valve in piston rod, and the length of piston rod is determined by the stroke of uplock, the present invention extend into collaborating valve in the path of piston rod, and valve length can be consistent with the length of piston rod, collaborating stroke can be arbitrarily devised in uplock piston movement stroke, is not affected by other factors.Therefore, its design collaborating stroke can not be limited by product structure, arbitrarily devised in the stroke of pressurized strut, and traditional uplock coordination valve is unappeasable.
Accompanying drawing explanation
Fig. 1 is retractable actuating cylinder uplock coordination valve initial position schematic diagram of the present invention.
Fig. 2 is that the valve motion that collaborates of Fig. 1 puts in place schematic diagram.
Fig. 3 is that Fig. 1 collaborates valve and opens schematic diagram.
In the diagram of Fig. 1-3: A: collaborate ozzle, B: ozzle of unblanking, C: ozzle of locking, 1 steel ball, 2 valve, 3 return springs, 4 spring bases, 5 back-up rings, 6 uplock pistons, 7 baffle rings, 8 nuts, 9 piston rods, 10 collaborate cylinder, 11 piston rod hollow channels, 12 plunger shaft.
Detailed description of the invention
Further illustrate the present invention below in conjunction with the accompanying drawings with embodiment, but the most therefore limit the present invention among described scope of embodiments.All these designs should be regarded as this technology disclosure of that and protection scope of the present invention.
Refering to Fig. 1-Fig. 3.In embodiment described below, retractable actuating cylinder uplock coordination valve, including: collaborate cylinder with lock ring and latch hook, coaxially it is assemblied in and collaborates in cylinder, in being connected in piston rod linkage valve 2 and sealing collaborates the steel ball 1 of ozzle A, the baffle ring 7 being connected with piston rod and the nut 8 being connected with valve, valve return spring 3 and spring base 4, for limiting the back-up ring 5 of spring base.Piston rod linkage valve 2 sequentially passes through the uplock piston 6 built-in spring base of cavity 4, return spring 3 and baffle ring 7 and axially extends to the length direction of piston rod hollow channel, composition lock coordination valve.Collaborate valve to extend in the path of piston rod, and valve length can be consistent with the length of piston rod.When hydraulic oil from radial direction Vertical Coordination move cylinder cylinder end unblank ozzle B enter association pressurized strut hydraulic cavities time, steel ball 1 axially collaborates ozzle A oil-in gluing, sealing with collaborating on an end face under the effect of hydraulic coupling, collaborate ozzle A and collaborating in cylinder towards backplate, hydraulic oil can only promote uplock piston 6 to move right, when move distance reaches to collaborate stroke, connect firmly the nut 8 on piston rod free end contact with the baffle ring 7 being positioned at bottom plunger shaft and drive valve 2 body of rod to move right, valve 2 is driven to drive steel ball 1 to move, depart from and collaborate ozzle A oil-in, now, collaborate ozzle A and ozzle B intercommunication of unblanking, complete to collaborate valve function and uplock system realizes first unblanking to put afterwards the coordination of backplate sequentially.
After fluid enters pressurized strut inner chamber by the ozzle B that unblanks, first making uplock piston movement one end distance, make uplock open certain angle in advance, then fluid leads to the pressurized strut collaborating ozzle A towards control backplate again.
Collaborating stroke mainly to be determined by the length of the valve in piston rod, the length of piston rod is determined by the stroke of uplock, and the length of the valve in piston rod can be consistent with the length of piston rod.
Any one value collaborated in the piston movement stroke that stroke can be uplock of coordination valve.
Claims (5)
- null1. a retractable actuating cylinder uplock coordination valve，Including: coaxially it is assemblied in pressurized strut,Steel ball (1) in sealing and be connected in piston rod linkage valve (2)、Valve return spring (3)、For limiting the back-up ring (5) of spring base (4)、The baffle ring (7) being connected with piston rod and the nut (8) being connected with valve，It is characterized in that: when hydraulic oil enters in pressurized strut from the ozzle B that unblanks radial and normal to start stack shell axle head，Steel ball (1) axially collaborates ozzle A oil-in gluing, sealing with collaborating on an end face under the effect of hydraulic coupling，Collaborate ozzle A in backplate pressurized strut，Hydraulic oil can only promote uplock piston (6) to move right，When move distance reaches to collaborate stroke，Nut (8) contacts with baffle ring (7) and drives valve (2) body of rod to move right，Valve (2) is driven to drive steel ball (1) motion，Depart from and collaborate ozzle A oil-in，Now，Collaborate ozzle A and ozzle B intercommunication of unblanking，Complete to collaborate valve function and uplock system realizes first unblanking to put afterwards the coordination of backplate sequentially.
- 2. retractable actuating cylinder uplock coordination valve as claimed in claim 1, it is characterized in that, after fluid enters pressurized strut inner chamber by the ozzle B that unblanks, first uplock piston movement one segment distance is made, making uplock open certain angle in advance, then fluid leads to the pressurized strut collaborating ozzle A towards control backplate again.
- 3. retractable actuating cylinder uplock coordination valve as claimed in claim 1, it is characterized in that, collaborating stroke mainly to be determined by the length of the valve in piston rod, the length of piston rod is determined by the stroke of uplock, and in piston rod, the length of valve (2) is consistent with the length of piston rod.
- 4. retractable actuating cylinder uplock coordination valve as claimed in claim 1, it is characterised in that the stroke that collaborates of coordination valve is any one value in uplock piston movement stroke.
- 5. retractable actuating cylinder uplock coordination valve as claimed in claim 1, it is characterised in that collaborate valve and extend into piston rod internal diameter, and valve length is consistent with the length of piston rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410756802.5A CN104477379B (en) | 2014-12-10 | 2014-12-10 | Retractable actuating cylinder uplock coordination valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410756802.5A CN104477379B (en) | 2014-12-10 | 2014-12-10 | Retractable actuating cylinder uplock coordination valve |
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| Publication Number | Publication Date |
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| CN104477379A CN104477379A (en) | 2015-04-01 |
| CN104477379B true CN104477379B (en) | 2016-08-31 |
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| CN201410756802.5A Active CN104477379B (en) | 2014-12-10 | 2014-12-10 | Retractable actuating cylinder uplock coordination valve |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10259568B2 (en) | 2016-12-14 | 2019-04-16 | Goodrich Corporation | Non-jamming shrink latch assembly for retractable aircraft landing gear |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105584628B (en) * | 2015-10-27 | 2021-03-30 | 成都飞机工业（集团）有限责任公司 | Guard plate undercarriage linkage winding and unwinding devices |
| CN106586030B (en) * | 2017-02-20 | 2023-10-24 | 中国人民解放军海军航空工程学院青岛校区 | Equivalent coordination valve test bench |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204310037U (en) * | 2014-12-10 | 2015-05-06 | 四川凌峰航空液压机械有限公司 | Uplock coordination valve |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2460088B (en) * | 2008-05-16 | 2012-05-09 | Ge Aviat Systems Ltd | Locking assembly |
| US8123161B1 (en) * | 2008-06-03 | 2012-02-28 | Hamilton Sundstrand Corporation | Aircraft landing gear unlock actuator |
| CN103523214A (en) * | 2012-07-06 | 2014-01-22 | 哈尔滨飞机工业集团有限责任公司 | Internal locking device of actuating cylinder |
| CN103466083B (en) * | 2013-08-30 | 2015-12-02 | 中航飞机起落架有限责任公司 | A kind of emergent pressurized strut |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204310037U (en) * | 2014-12-10 | 2015-05-06 | 四川凌峰航空液压机械有限公司 | Uplock coordination valve |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10259568B2 (en) | 2016-12-14 | 2019-04-16 | Goodrich Corporation | Non-jamming shrink latch assembly for retractable aircraft landing gear |
| EP3712060A1 (en) * | 2016-12-14 | 2020-09-23 | Goodrich Corporation | Non-jamming shrink latch assembly for retractable aircraft landing gear |
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| Publication number | Publication date |
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| CN104477379A (en) | 2015-04-01 |
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