CN103016450B - Actuator cylinder slider snap ring lock - Google Patents
Actuator cylinder slider snap ring lock Download PDFInfo
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- CN103016450B CN103016450B CN201210548115.5A CN201210548115A CN103016450B CN 103016450 B CN103016450 B CN 103016450B CN 201210548115 A CN201210548115 A CN 201210548115A CN 103016450 B CN103016450 B CN 103016450B
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- pressurized strut
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Abstract
The invention provides an actuator cylinder slider snap ring lock, comprising a split snap ring (4) arranged on the end face of an actuator cylinder piston (2) in a clamping manner, wherein the pore diameter formed by installing a step shaft at the lock end of the actuator cylinder is not less than the largest free size of the split snap ring while opening completely; and an annular lock bracket (3) attached to the installation end face of a movable lock piston (10) and a plunger end cover (12), wherein the end opening is provided with a radial boss cooperated with a boss on excircle trapezoid cross section of the split snap ring. The split snap ring and a floating slider (6) supporting the split snap ring are clamped between the end face of a bearing lock disk (7) and the end face of the actuator cylinder piston; uniformly distributed T-shaped arc floating slider are movably connected by a bolt (9) fixedly connected on the end face of the actuator cylinder piston through a fastening hole distributed on the periphery of the bearing lock disk (7) and a radial elliptical hole on the floating slider; and the bolt can move in radial direction in the elliptical hole. The actuator cylinder slider snap ring lock effectively solves basic problems that general mechanical lock structure cannot satisfy heavy loading and scratches the actuator cylinder body when in heavy loading.
Description
Technical field
The invention relates to the mechanical lock be applied in plane hydraulic system pressurized strut, more particularly, the invention relates to a kind of Novel clamp ring lock that can be integrated in pressurized strut.
Background technique
In modern actuating system, there are a lot of local needs after actuating system runs out of steam, by the special machine device of self configuration, actuating system are locked in some specific position securely, and can external loading be resisted.Therefore, in most plane hydraulic system actuator, in widely used pressurized strut, the scheme of inside and outside mechanical lock is nearly all integrated with.At present, the mechanical lock that aviation uses mainly contains two kinds: a kind of in actuating system separate configurations, be exclusively used in the mechanical device of lock function, be called external lock; Another kind is at system actuator---and integrated in pressurized strut, play the mechanical device of lock function, be called internal lock.Above-mentioned mechanical internal lock integrated in pressurized strut, mainly contains steel ball lock, finger-type lock, collet chuck lock, retaining ring lock four kinds.
Steel ball lock (Cylinder lock with ball, steel ball lock), after the locking of steel ball lock, for making steel ball working reliable, locked groove and tapered piston should have enough hardness, prevent excessive wear or damage locked groove; For making each steel ball stressed relatively more even, prevent the stressed excessive destruction of causing locked groove or steel ball of indivedual steel ball, higher to the manufacture processing request of locked groove; Cylinder lock with ball locking is reliable, and structure is simple, but bearing capacity is less.
Steel ball lock utilizes steel ball to stop piston rod to move right by lock piston, realize the object that lock piston bar moves right, the principle of this steel ball lock is stretched out under hydraulic pressure when piston rod, when the steel ball (8 ~ 12) on piston and lock piston contact, promote tapered piston motion and Compress Spring; When piston moves on to locked groove place with steel ball, steel ball is clamp-oned locked groove by tapered piston, is pinned by piston.When high pressure oil oppositely enters, promote tapered piston motion, make tapered piston leave steel ball, piston just at oil pressure move under influence, and is unblanked with steel ball departs from locked groove.
It is large that finger-type locks pressure, reliable and stable, manufactures, installation difficulty is large.
Collet chuck lock (petal lock, hinge lock), structural type has two kinds, and a kind of is the hinge lock be arranged on by travelling lock piston on piston rod assembly, and another kind is the petal lock be arranged on by travelling lock piston on end-cap assembly, its major advantage is that bearing capacity is comparatively large, but fast knot structure is longer;
Retaining ring lock is greatly stressed, and surface of contact is large, steadily stressed, and after retaining ring lock locking, bearing capacity is very strong.
The pressurized strut of plane hydraulic system using more is steel ball lock and retaining ring lock.Retaining ring lock locking state is the harshest working state of retaining ring lock, snap ring have receive ring and a ring point.Receive ring and refer to that snap ring in the course of the work, only produce and shrink resiliently deformable, nature is its overall dimensions state; Zhang Huan refers to that snap ring in the course of the work, and only produce expanding elastic distortion, nature is its minimum dimension state.It is by travelling piston that prior art opens ring retaining ring lock, is arranged on the retaining ring lock on piston rod assembly, and Zhang Huan locks in process at snap ring, and piston of locking need overcome the elastic force of snap ring, is opened by snap ring by force.When locking, snap ring is in pressure open configuration, and when unblanking, locking, piston exits, and snap ring shrinks under the synergy of its own resilient, unlock pressure and load force, makes snap ring energy entirety enter annular lock endoporus, completes the process of unblanking.
The working principle of retaining ring lock is for when piston rod moves down into extended position at hydraulic pressure and culminates, and snap ring just overlaps with the locked groove on housing, and snap ring expands and in card entry slot, piston is locked.The method of location is that travelling piston protuberance inserts in snap ring internal diameter, prevents snap ring and shrinks.Now piston rod just can not move by external load function.When piston rod is regained, travelling piston is moved to the left and is unclamped by snap ring under hydraulic pressure, and snap ring skids off from locked groove inclined-plane and unblanks under its elastic force and piston rod effect.Although retaining ring lock has the advantage that its bearing capacity is very large, but after snap ring unblanks to leave locked groove, snap ring start cylinder bore can not be in open completely after free state, retaining ring lock in pressurized strut cylindrical shell movement process also with load, when particularly load is larger, under the effect of negative load, pressurized strut cylindrical shell contacts with snap ring is heavily stressed, there is the hidden danger scratching pressurized strut cylindrical shell.
The bearing capacity of above-mentioned said retaining ring lock is strong, and actual is incomplete.Due to after mechanical lock and pressurized strut integrate, the bearing capacity of retaining ring lock only can not consider locking ability, and what also should comprise the locking ability of mechanical lock and pressurized strut makes kinetic force, and just locking load is large for retaining ring lock, and it is not strong to make kinetic force.
Summary of the invention
The present invention is that task is to provide one band can be made to carry unlock pressure and unloaded unlock pressure closer to, locking ability with to make kinetic force stronger, can bear large load, can avoid again the Novel clamp ring lock that cylindrical shell scratches.
The technical solution adopted for the present invention to solve the technical problems is: a kind of pressurized strut sliding block clamp ring lock, comprise: be assemblied in the travelling lock piston 10 in pressurized strut axial end portion cylindrical shell and be arranged in lockset annular die cavity, be installed in the slotted collar 4 on pressurized strut piston 2 end face, it is characterized in that: the maximum free size that annular groove aperture >=slotted collar 4 that the assembling of pressurized strut lock end Step Shaft is formed is opened completely, be fitted in travelling lock piston 10 and the annular lock 3 in plunger end cap 12 assembled end, port is shaped with the radial boss coordinated with the tacit agreement of slotted collar 4 cylindrical trapezoid cross section boss, and should be fitted on pressurized strut step hole bottom end towards the radial raised head face in the center of circle, floating slider 6 clamping of slotted collar 4 and radial support slotted collar 4 is between load lock collar 7 end face and dynamic cylinder piston 2 end face, at least three along the uniform T-shaped circular arc floating slider 6 of slotted collar 4 inner circle decile, by the bolt 9 be fixed on pressurized strut piston 2 end face, radial elliptical aperture on the fastener hole circumferentially distributed by load lock collar 7 and floating slider 6 is flexibly connected, and can do radial motion in elliptical aperture.
On the free port of described floating slider 6, be also shaped with and above-mentioned travelling lock piston 10 multidiameter shaft nozzle cylindrical cone, the conical horn mouth that tapering is consistent.
The present invention has following beneficial effect compared to prior art:
The present invention arranges the transition floating slider 6 of a support openings snap ring between travelling lock piston 10 and slotted collar 4, when slotted collar 4 is moved in start cylindrical shell, the circumferentially support floating slide block 6 made of decile directional spreding, the support of slotted collar is reached maximum, because floating slider 6 grade divides directional spreding, make floating slider uniform force, the load that can meet the demands, do not contact with pressurized strut drum surface again, thus avoid because of slotted collar and cylindrical shell contact stress is excessive and cylindrical shell that is that occur scratches phenomenon.
Due to slotted collar be locked in load time, when particularly load is larger, under the effect of the frictional force that frictional force, floating slider and travelling piston that the frictional force, snap ring and the floating slider that produce in floating slider and piston end surface, fixing load lock collar produce produce, unlock pressure is much larger than unlock pressure during zero load, floating slider 6 and the travelling surface of contact locking piston 10 are designed to circular cone inclined-plane by the present invention, the frictional force that floating slider and travelling piston produce can be dissolved, make band carry unlock pressure and unloaded unlock pressure closer to.Certainly, when institute's bringing onto load is little when unblanking, cone inclined face can be made.Wherein by pressurized strut cylinder bore larger to be greater than slotted collar open completely after free size, just thoroughly can eliminate open card ring lock and scratch the hidden danger of cylindrical shell.Pressurized strut cylinder bore size is determined by the size of ouput force, and pressurized strut cylinder bore size can not arbitrarily strengthen, and circular cone bevel angle carries size according to band and designs, and circular cone bevel angle should be less than the Self-locking angle that machinery industry specifies.
The size that the present invention is arranged on slotted collar outer ring surface is less than start cylinder bore, the trapezoid cross section that slotted collar free size is opened completely and the trapezoid cross section consistent with shape on annular lock, the receipts ring mode of operation that the mutual tacit agreement formed coordinates, the reliability of locking is compared to the Zhang Huangao of prior art.Thus efficiently solve conventional mechanical lock construction and cannot meet large load and under large load-up condition, scratch the root problem of pressurized strut cylindrical shell.
The present invention is compared with mechanical lock described in prior art, and result is as following table:
Accompanying drawing explanation
Fig. 1 is the retaining ring lock full section organigram that the present invention is assemblied in pressurized strut lock end step hole.
Fig. 2 is along the left pseudosection that slotted collar 4 center line is cut open in Fig. 1.
Fig. 3 is the partial schematic diagram that retaining ring lock of the present invention does not enter locking state in pressurized strut lock end step hole.
Fig. 4 is that Fig. 3 pressurized strut piston moves to left the cross-sectional schematic of slotted collar pressurized radial contraction.
Fig. 5 is that Fig. 4 slotted collar radial contraction minimum dimension state analyses and observe partial structurtes schematic diagram.
Fig. 6 be Fig. 5 slotted collar be about to enter pressurized strut piston axle head contracting groove analyse and observe partial structurtes schematic diagram.
Fig. 7 is that Fig. 6 slotted collar snaps in the schematic diagram of locked groove lock piston with the maximum free size of radial expansion.In figure: 1 start cylindrical shell, 2 pressurized strut pistons, 3 annular locks, 4 slotted collar, 5 adjustment pads, 6 floating sliders, 7 load lock collars, 8 position-arresting disks, 9 bolts, 10 travelling lock pistons, 11 springs, 12 plunger end caps, 13 nuts, 14 piston rods, 15 obturage cover, 16 Earring connectors, 17 lockset die cavities, 18 oil inlet holes, 19 lock end stand rank groove holes.20 spill ports.
Embodiment
Further illustrate the present invention below in conjunction with drawings and Examples, but therefore do not limit the present invention among described scope of embodiments.All these designs should be considered as content disclosed in this technology and protection scope of the present invention.
Consult Fig. 1, Fig. 2.Shown in the figure is built in the pressurized strut sliding block clamp ring lock of pressurized strut 1, have one identical with prior art retaining ring lock shape, and be positioned at the annular lock 3 of lockset front end and be positioned at the plunger end cap 12 of lockset rear end, and being assemblied in the slotted collar 4 in lockset die cavity 17, adjustment pad 5, load lock collar 7, position-arresting disk 8, bolt 9, spring 11 and travelling lock piston 10, wherein, pressurized strut piston 2 assembles on the piston rod, is fixed locking by nut 13; Cover 15 of obturaging is connected with pressurized strut by screw thread, and Earring connector 16 is connected with piston rod 14 by screw thread.The travelling lock piston 10 doing axial motion in plunger end cap 12 annular chamber has a step cylindrical shell extended vertically.Position-arresting disk 8 is positioned at the upper end in lockset die cavity 17 space that start cylindrical shell 1 is formed with plunger end cap 12, connects firmly on the front-end face of plunger end cap 12, and is connected with adjustment pad 5.The maximum free size that the lock end stand rank annular groove aperture >=slotted collar 4 of pressurized strut is opened completely, lock end stand rank groove hole 19 is that pressurized strut lock end Step Shaft and start cylindrical shell 1 assemble the groove hole formed.Snap ring 4 adopt receive ring, receive ring be snap ring 4 in the process of locking, under the effect of snap ring natural resiliency, automatically open towards radial direction, when locking, snap ring 4 is in nature open configuration.
Be fitted in travelling lock piston 10 and the annular lock 3 in end cap 12 assembled end, port be shaped with the radial boss coordinated with the tacit agreement of slotted collar 4 cylindrical trapezoid cross section boss, and be fitted on pressurized strut step hole bottom end towards the radial raised head face in the center of circle.Be connected in the load lock collar 7 of pressurized strut piston 2 by bolt 9, slotted collar 4 is close on the rear end end face of pressurized strut piston 2.The arc transition floating slider 6 of radial support slotted collar 4 is arranged between travelling lock piston 10 Step Shaft and slotted collar 4.Floating slider 6 clamping of slotted collar 4 and radial support slotted collar 4 is between load lock collar 7 end face and dynamic cylinder piston 2 end face, at least three along the uniform T-shaped circular arc floating slider 6 of slotted collar 4 inner circle decile, by the bolt 9 be fixed on pressurized strut piston 2 end face, radial elliptical aperture on the fastener hole circumferentially distributed by load lock collar 7 and floating slider 6 is flexibly connected, and can do radial motion in elliptical aperture.T-shaped circular arc floating slider 6 described herein, T-shaped circular arc is the attribute of floating slider 6.The design length of floating slider is relevant with the size of pressurized strut cylinder internal diameter size and pressurized strut band load, and start cylindrical shell 1 internal diameter is determined according to magnitude of load, along the circumferential direction can to classify in three categories in the floating slider be equally spaced point, 4 deciles or 6 deciles.The triangle combined hole of Fig. 2 display is formed by the T-shaped face of two adjacent floating sliders 6, and elliptical aperture is that floating slider carries.Pressurized strut piston 2 is shaped with the polygonal boss by above-mentioned triangle combined hole, polygonal boss is by triangle and trapezoidally combine, bolt 9 is by the radial elliptical aperture of floating slider 6, be bolted on the boss of piston, floating slider 6, by the trapezoidal inclined plane straight flange of the adjacent polygonal boss in its both sides, T-shaped face, can radially slide in elliptical aperture.Slotted collar 4 and floating slider 6 do radial motion in the region that annular lock 3, pressurized strut piston 2 surround, movement clearance between floating slider end face and pressurized strut piston end surface is not less than 0.1 ~ 0.3mm, the gap that floating slider is along the circumferential direction equally spaced is not less than 0.3 ~ 0.5mm, floating slider does radial motion in elliptical aperture, movement clearance is not less than 0.1 ~ 0.3mm, and the spatial joint clearance after pressurized strut lock holds step hole hole inner diameter and slotted collar 4 freely to open completely is of a size of 0.5mm ~ 1.0mm.
For dissolving most frictional force, make band carry unlock pressure and unloaded unlock pressure closer to, on the free port of described floating slider 6, be also shaped with and above-mentioned travelling lock piston 10 multidiameter shaft nozzle cylindrical cone, the conical horn mouth that tapering is consistent.Floating slider 6 designs according to being with a year size with travelling piston 10 cylindrical shell cylindrical surface of contact cone bevel angle of lock, the Self-locking angle that floating slider 6 and described travelling lock piston 10 axle head coordinate the angle on circular cone inclined-plane to be less than machinery industry to specify.The maximum radial exapnsion free size that slotted collar 4 outer ring surface opens completely is less than lock end stand rank, pressurized strut end bore dia.Slotted collar 4 trapezoid cross section boss is consistent towards the radial boss shape in the center of circle with annular lock 3.In order to limit the freedom of axial movement of annular lock 3, annular lock 3 raised head face is fitted on the end face of pressurized strut step hole.The trapezoid cross section boss that slotted collar 4 and annular lock 3 liang match defines the receipts ring mode of operation that a tacit agreement coordinates.Slotted collar 4 and annular lock 3, floating slider 6 and slotted collar 4 are locked piston 10 for face contact with travelling.
The mode of operation of slotted collar 4 adopts receives ring; Slotted collar 4, in the process of locking, under the elastic reaction of self opening, is opened along cylindrical radial direction automatically, and when locking, slotted collar 4 is in nature open configuration.When unblanking, the travelling piston 10 inserted in floating slider 6 internal diameter exits, and radial contraction under the radial compression applied that slotted collar 4 produces in the hydraulic coupling of oil inlet hole 18, makes slotted collar 4 energy entirety enter annular lock 3 endoporus, complete the process of unblanking.
The process prescription of locking locked by pressurized strut sliding block clamp ring is below as follows:
As Fig. 3.Be fixed on the slotted collar 4 between load lock collar 7 and pressurized strut piston 2 inner side end, travelling lock piston 10 step end face axially connected load lock collar 7 is promoted through spring 11, and the position-arresting disk 8 of the slotted collar 4 that interlocks, slotted collar 4 trapezoid cross section boss between pressurized strut piston 2 and load lock collar 7 inner side end, the mutual tacit agreement of radial trapezoidal section of boss is held to coordinate with annular lock 3 mouthfuls, the receipts ring mode of operation that the formation one that interlocks between two cooperatively interacts, when high pressure oil enters pressurized strut receipts epicoele through receiving top fitting, slotted collar 4 is moved along with pressurized strut piston 2, under the effect of rod chamber pressure, the left conical surface of slotted collar 4 trapezoid cross section boss and the right taper-face contact of annular lock 3, now, floating slider 6 is locked piston 10 do not contact with travelling.When slotted collar 4 presses the position shown in Fig. 3, continue to be moved to the left under the effect of high pressure oil, radial contraction under the effect on left conical surface inclined-plane on the right side of the boss of annular lock 3 trapezoid cross section of slotted collar 4 trapezoid cross section boss.The external diameter of slotted collar 4 be retracted to equal annular lock 3 internal diameter time, slotted collar 4 moves to position shown in Fig. 4.
Consult Fig. 4.Move to left when continuing to promote pressurized strut piston 2 under the effect of slotted collar 4 at high pressure oil, floating slider 6 just contacts with the travelling lock piston 10 of position shown in Fig. 4, and the center line of slotted collar 4 overlaps with the center line of the annular lock 3 in position shown in Fig. 5.
Consult Fig. 5.Move to left when continuing to promote pressurized strut piston 2 under the effect of slotted collar 4 at high pressure oil, the outer right side bearing of slotted collar 4 just in time overlaps in theory with annular lock 3 inner edge of position shown in Fig. 5, slotted collar 4 is opened because of the elasticity tension of self, returns to free uncompressed state.
Consult Fig. 6.Move to left when slotted collar 4 continues to promote pressurized strut piston 2 under the effect of oil inlet hole 18 high pressure oil, slotted collar radial direction under the synergy of the power of locking of its own resilient and travelling piston 10 is opened, travelling piston 10 protuberance inserts in the internal diameter of floating slider 6 under the elastic force effect of spring, because floating slider is along the circumferential direction equally spaced, therefore prevent slotted collar in a circumferential direction and shrink, realize locking of retracted position shown in Fig. 7.
Mode of unblanking is contrary with the mode of locking.Namely when piston rod 14 is regained, travelling piston is moved to the left and slotted collar is unclamped under hydraulic pressure, and slotted collar skids off from locked groove inclined-plane and unblanks under its elastic force and piston rod 14 act on.
Claims (2)
1. a pressurized strut sliding block clamp ring lock, comprise: be assemblied in the travelling lock piston (10) in pressurized strut axial end portion cylindrical shell and be arranged in lockset annular die cavity, be installed in the slotted collar (4) on pressurized strut piston (2) end face, it is characterized in that: the maximum free size that annular groove aperture >=slotted collar (4) that the assembling of pressurized strut lock end Step Shaft is formed is opened completely, be fitted in travelling lock piston (10) and the annular lock (3) in plunger end cap (12) assembled end, port is shaped with the radial boss coordinated with the tacit agreement of slotted collar (4) cylindrical trapezoid cross section boss, and should be fitted on pressurized strut step hole bottom end towards the radial raised head face in the center of circle, floating slider (6) clamping of slotted collar (4) and radial support slotted collar (4) is between load lock collar (7) end face and pressurized strut piston (2) end face, at least three along the uniform T-shaped circular arc floating slider (6) of slotted collar (4) inner circle decile, by the bolt (9) be fixed on pressurized strut piston (2) end face, radial elliptical aperture on the fastener hole circumferentially distributed by load lock collar (7) and floating slider (6) is flexibly connected, and can do radial motion in elliptical aperture.
2. pressurized strut sliding block clamp ring lock as claimed in claim 1, it is characterized in that, (2) are shaped with polygonal boss to pressurized strut piston, polygonal boss is by triangle and trapezoidally combine, bolt (9), by the radial elliptical aperture of floating slider (6), is bolted on the polygonal boss of pressurized strut piston.
3. pressurized strut sliding block clamp ring lock as claimed in claim 1, is characterized in that, does radial motion in the area of space that slotted collar (4) and floating slider (6) surround at annular lock (3), pressurized strut piston (2).
4. pressurized strut sliding block clamp ring lock as claimed in claim 1, it is characterized in that, position-arresting disk (8) is positioned at the upper end of the space die cavity that start cylindrical shell (1) is formed with plunger end cap (12), connects firmly on the front-end face of plunger end cap (12), and is connected with adjustment pad (5).
5. pressurized strut sliding block clamp ring lock as claimed in claim 4, be is characterized in that, be connected in the load lock collar (7) of pressurized strut piston (2), slotted collar (4) be close on the rear end end face of pressurized strut piston (2) by bolt (9).
6. pressurized strut sliding block clamp ring lock as claimed in claim 1, it is characterized in that, slotted collar (4) adopts receives ring, receiving ring is that slotted collar (4) is in the process of locking, under the effect of slotted collar natural resiliency, automatically open towards radial direction, when locking, slotted collar (4) is in nature open configuration.
7. pressurized strut sliding block clamp ring lock as claimed in claim 1, is characterized in that, start cylindrical shell (1) hole size be greater than slotted collar (4) open completely after free size, and both gaps are 0.5 ~ 1.0mm.
8. pressurized strut sliding block clamp ring lock as claimed in claim 1, it is characterized in that, move to left when promoting pressurized strut piston (2) under the effect of slotted collar (4) at high pressure oil, slotted collar radial direction under the synergy of its own resilient with the power of locking of travelling lock piston (10) is opened, travelling lock piston (10) protuberance inserts in the internal diameter of floating slider (6), prevention slotted collar is shunk, and realizes locking of retracted position.
9. pressurized strut sliding block clamp ring lock as claimed in claim 1, is characterized in that, on the free port of described floating slider (6), be also shaped with and above-mentioned travelling lock piston (10) multidiameter shaft nozzle cylindrical cone, the conical horn mouth that tapering is consistent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210548115.5A CN103016450B (en) | 2012-12-17 | 2012-12-17 | Actuator cylinder slider snap ring lock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210548115.5A CN103016450B (en) | 2012-12-17 | 2012-12-17 | Actuator cylinder slider snap ring lock |
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| Publication Number | Publication Date |
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| CN103016450A CN103016450A (en) | 2013-04-03 |
| CN103016450B true CN103016450B (en) | 2015-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210548115.5A Active CN103016450B (en) | 2012-12-17 | 2012-12-17 | Actuator cylinder slider snap ring lock |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103600838B (en) * | 2013-08-23 | 2016-03-30 | 中国航空工业集团公司西安飞机设计研究所 | A kind of carrying pressurized strut |
| CN103527559B (en) * | 2013-10-17 | 2016-04-06 | 上海新跃仪表厂 | The double-acting hydraulic cylinder of lateral load can be born |
| CN104791327B (en) * | 2015-04-02 | 2017-01-11 | 中航飞机股份有限公司西安飞机分公司 | Emergency unlocking device for steel ball lock structure |
| CN110949661B (en) * | 2019-12-12 | 2024-04-23 | 四川凌峰航空液压机械有限公司 | Slide-controlled lock for large load actuator cylinder |
| CN112460220B (en) * | 2020-10-29 | 2021-11-16 | 北京精密机电控制设备研究所 | Fault-safe damping type anti-jamming electromechanical actuator |
| CN114030596B (en) * | 2021-12-17 | 2023-08-11 | 江西洪都航空工业集团有限责任公司 | Sleeve type stay bar with snap ring inner lock |
| JP7424700B1 (en) | 2023-06-30 | 2024-01-30 | 富士精工株式会社 | thermo actuator |
Citations (5)
| 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 |
| US5056418A (en) * | 1990-10-18 | 1991-10-15 | Granger Stanley W | Self-adjusting automatic locking piston for RAM blowout preventers |
| CN201412409Y (en) * | 2009-06-17 | 2010-02-24 | 江苏恒立高压油缸有限公司 | Mechanical self-locking hydro cylinder |
| CN202280692U (en) * | 2011-09-30 | 2012-06-20 | 北京航天发射技术研究所 | Steel ball locking type hydraulic cylinder |
| CN202284580U (en) * | 2011-10-19 | 2012-06-27 | 台州市黄岩西诺模具有限公司 | Improved type strong self-locking oil cylinder |
-
2012
- 2012-12-17 CN CN201210548115.5A patent/CN103016450B/en active Active
Patent Citations (5)
| 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 |
| US5056418A (en) * | 1990-10-18 | 1991-10-15 | Granger Stanley W | Self-adjusting automatic locking piston for RAM blowout preventers |
| CN201412409Y (en) * | 2009-06-17 | 2010-02-24 | 江苏恒立高压油缸有限公司 | Mechanical self-locking hydro cylinder |
| CN202280692U (en) * | 2011-09-30 | 2012-06-20 | 北京航天发射技术研究所 | Steel ball locking type hydraulic cylinder |
| CN202284580U (en) * | 2011-10-19 | 2012-06-27 | 台州市黄岩西诺模具有限公司 | Improved type strong self-locking oil cylinder |
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| CN103016450A (en) | 2013-04-03 |
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