CN108116666A - The reliable locking method of electric retractable actuating cylinder - Google Patents
The reliable locking method of electric retractable actuating cylinder Download PDFInfo
- Publication number
- CN108116666A CN108116666A CN201711210382.0A CN201711210382A CN108116666A CN 108116666 A CN108116666 A CN 108116666A CN 201711210382 A CN201711210382 A CN 201711210382A CN 108116666 A CN108116666 A CN 108116666A
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- China
- Prior art keywords
- lock
- steel ball
- barrel
- cylinder barrel
- cylinder
- 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.)
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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
-
- 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
- B64C25/24—Operating mechanisms electric
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transmission Devices (AREA)
Abstract
The present invention relates to a kind of reliable locking methods of electric retractable actuating cylinder, are related to frame for movement technical field.Scheme provided by the invention, which provides the power packed up and put down for undercarriage and passes through built-in locking mechanism, provides reliable coupling mechanism force, it reliably locks when electric retractable actuating cylinder bears pulling force and thrust under stretching state, it is disturbed from external force, the reliability of Landing Gear System is improved, ensures the safe landing of aircraft.
Description
Technical field
The present invention relates to frame for movement technical field, and in particular to a kind of reliable locking method of electricity retractable actuating cylinder.
Background technology
Unmanned plane industry in China's is fast-developing at present, and the Landing Gear System competition of support unmanned plane industry fast development is particularly
Fierceness, especially light-duty unmanned plane (3 tons and less) are extremely harsh to Landing Gear System reliability and weight demands, this is just needed
Landing Gear System compact mechanical structure mitigates weight.
Electric retractable actuating cylinder provides the power packed up and put down for undercarriage and passes through built-in locking mechanism and provides reliably
Coupling mechanism force reliably locks when electric retractable actuating cylinder bears pulling force and thrust under stretching state, disturbs, improve from external force
Fall the reliability of frame system, ensure the safe landing of aircraft.How to design it is a kind of ensure to lock when Landing Gear System is put down it is reliable,
It ensures the reliable locking method of electric retractable actuating cylinder of the safe landing of unmanned plane, becomes the technical issues of urgently to be resolved hurrily.
The content of the invention
(1) technical problems to be solved
The technical problem to be solved by the present invention is to：How to ensure to lock reliable, guarantee unmanned plane when Landing Gear System is put down
Safe landing.
(2) technical solution
It is described in order to solve the above technical problem, the present invention provides a kind of reliable locking method of electric retractable actuating cylinder
Electric retractable actuating cylinder includes lock barrel 1, guide sleeve 2, left lock slider 3, right lock slider 3 ', left spring 4, right spring 5, locking
Nut 6, left steel ball 7, right steel ball 7 ', push rod 8, cylinder barrel 9, motor 10, gear-box 11 and lead screw pair 12；
The lead screw pair 12 is located at the cental axial position of cylinder barrel 9, and motor 10 and lead screw pair 12 are mounted on gear-box 11 side by side
On, motor 10 drives lead screw pair 12 to rotate by the internal gear pair of gear-box 11, and push rod 8 is connected by screw with lead screw pair 12,
And push rod 8 is sleeved in lead screw pair 12, lock barrel 1, left steel ball 7, right steel ball 7 ', left spring 4, right spring 5, locking nut 6, Zuo Suo
Fixed slider 3, right lock slider 3 ', push rod 8 form a built-in locking device, and built-in locking device is located at cylinder barrel 9 and lead screw pair
In space between 12, left steel ball 7,7 ' size of right steel ball are identical, and 9 inner wall of cylinder barrel is equipped with a groove, and the size of groove is according to a left side
The size design of steel ball 7 and right steel ball 7 ', cylinder barrel 9 are connected by screw with gear-box 11, and guide sleeve 2 is fixedly connected with cylinder barrel 9,
It is linear motion that lead screw pair 12, which is used for the convert rotational motion of motor 10, and locking device is back and forth transported in cylinder barrel 9 built in drive
It is dynamic；
The lock barrel 1 is located at 8 outside of push rod, and left lock slider 3, left spring have been sequentially arranged in space therebetween
4th, right spring 5, right lock slider 3 ', and pass through locking nut 6 and be locked, with the left side in the hole of 1 outer wall of lock barrel
Steel ball 7, right steel ball 7 ' collectively constitute the built-in locking device；
It the described method comprises the following steps：
When electric retractable actuating cylinder is contracted to lock-out state, right lock slider 3 ' is by the effect of right spring 5 by right steel ball 7 '
It pushes to the left in the groove of cylinder barrel 9, so as to limit built-in locking device action；
When electric retractable actuating cylinder extend out to lock-out state, guide sleeve 2 is affixed on built-in locking device, to its /V, left locking
Sliding block 3 is to the right pushed to left steel ball 7 in the groove of cylinder barrel 9 by the effect of left spring 4, is moved so as to limit built-in locking device
Make.
Preferably, the groove that 9 inner wall of cylinder barrel is set is semicircle.
Preferably, the locking nut 6 is affixed on the left side of left lock slider 3.
Preferably, the lock barrel 1 is metalwork.
Preferably, the cylinder barrel 9 is metalwork.
Preferably, isolated between the lock barrel 1 and cylinder barrel 9 by guide ring.
Preferably, the guide sleeve 2 is connected through a screw thread with cylinder barrel 9.
Preferably, when electric retractable actuating cylinder extend out to lock-out state, the lock barrel 1 is affixed on 1 left side of lock barrel.
(3) advantageous effect
Scheme provided by the invention provides the power packed up and put down for undercarriage and passes through that built-in locking mechanism provides can
The coupling mechanism force leaned on reliably locks when electric retractable actuating cylinder bears pulling force and thrust under stretching state, disturbs, carry from external force
The reliability of high Landing Gear System ensures the safe landing of aircraft.
Description of the drawings
Fig. 1 is to bear pulling force in method provided by the invention under a kind of stretching state for designing and thrust is reliably locked
Lock-out state lower structure schematic diagram is shunk in electric retractable actuating cylinder；
Fig. 2 is to bear pulling force in method provided by the invention under a kind of stretching state for designing and thrust is reliably locked
Built-in locking apparatus structure schematic diagram under lock-out state is shunk in electric retractable actuating cylinder；
Fig. 3 is to bear pulling force in method provided by the invention under a kind of stretching state for designing and thrust is reliably locked
Guide sleeve structure schematic diagram in electric retractable actuating cylinder；
Fig. 4 is to bear pulling force in method provided by the invention under a kind of stretching state for designing and thrust is reliably locked
Lock-out state lower structure schematic diagram is stretched out in electric retractable actuating cylinder.
Specific embodiment
To make the purpose of the present invention, content and advantage clearer, with reference to the accompanying drawings and examples, to the present invention's
Specific embodiment is described in further detail.
As shown in Figure 1, in the reliable locking method of electricity retractable actuating cylinder provided by the invention, held under the stretching state of design
The electric retractable actuating cylinder reliably locked by pulling force and thrust includes lock barrel 1, guide sleeve 2, left lock slider 3, right locking cunning
Block 3 ', left spring 4, right spring 5, locking nut 6, left steel ball 7, right steel ball 7 ', push rod 8, cylinder barrel 9, motor 10,11 and of gear-box
Lead screw pair 12, lead screw pair 12 are located at the cental axial position of cylinder barrel 9, and motor 10 and lead screw pair 12 are mounted on gear-box 11 side by side,
Motor 10 drives lead screw pair 12 to rotate by the internal gear pair of gear-box 11, and push rod 8 is connected by screw with lead screw pair 12, and is pushed away
Bar 8 is sleeved in lead screw pair 12, and lock barrel 1, left steel ball 7, right steel ball 7 ', left spring 4, right spring 5, locking nut 6, left locking are slided
Block 3, right lock slider 3 ', push rod 8 form a built-in locking device, built-in locking device be located at cylinder barrel 9 and lead screw pair 12 it
Between space in, left steel ball 7,7 ' size of right steel ball are identical, 9 inner wall of cylinder barrel be equipped with a groove, the size of groove is according to left steel ball 7
It is semicircle with the size design of right steel ball 7 '.Cylinder barrel 9 is connected by screw with gear-box 11, and guide sleeve 2 passes through with cylinder barrel 9
It is threadedly coupled, the convert rotational motion of motor 10 is linear motion by lead screw pair 12, and locking device is past in cylinder barrel 9 built in drive
Multiple movement avoids the two metalwork direct friction by guide ring between lock barrel 1 and cylinder barrel 9, reduces abrasive dust.
As shown in Fig. 2, bearing pulling force under stretching state provided by the invention and electric folding and unfolding start that thrust is reliably locked
Cylinder, lock barrel 1 are located at 8 outside of push rod, left lock slider 3, left spring 4, right spring have been sequentially arranged in space therebetween
5th, right lock slider 3 ', and pass through locking nut 6 and be locked, with the left steel ball 7, right in the hole of 1 outer wall of lock barrel
Steel ball 7 ' collectively constitutes built-in locking device.
As shown in Figure 1, 2, in reliable locking method of the present invention using above-mentioned electric retractable actuating cylinder realization, make electric folding and unfolding
Dynamic cylinder is contracted to lock-out state, and right steel ball 7 ' is pushed to the groove of cylinder barrel 9 by the effect of right spring 5 by right lock slider 3 '
It is interior, so as to limit built-in locking device action, reach locking purpose.
As shown in Figure 3,4, in reliable locking method of the present invention using above-mentioned electric retractable actuating cylinder realization, make electric folding and unfolding
Dynamic cylinder extend out to lock-out state, and left steel ball 7 is pushed to the right the groove of cylinder barrel 9 by the effect of left spring 4 by left lock slider 3
It is interior, so as to limit built-in locking device action, reach locking purpose.
As shown in figure 4, in reliable locking method of the present invention using above-mentioned electric retractable actuating cylinder realization, make electric folding and unfolding start
Cylinder extend out to lock-out state, and guide sleeve 2 is affixed on 1 left side of lock barrel, built-in locking device is blocked in the position for being conducive to locking,
Electric retractable actuating cylinder is made to be more easy to lock in extended position.If the position-limiting action without guide sleeve 2, when electric retractable actuating cylinder is extend out to
Latched position, when built-in locking device continues to be subject to external tensile force and pulling force is more than the elastic force of left spring 4, left 3 meeting of lock slider
Left steel ball 7 can not be pushed to due to the elastic force of left spring 4 is overcome in the groove of cylinder barrel 9.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and deformation can also be made, these are improved and deformation
Also it should be regarded as protection scope of the present invention.
Claims (8)
1. it is a kind of electricity retractable actuating cylinder reliable locking method it is characterized in that, it is described electricity retractable actuating cylinder include lock barrel (1),
Guide sleeve (2), left lock slider (3), right lock slider (3 '), left spring (4), right spring (5), locking nut (6), left steel ball
(7), right steel ball (7 '), push rod (8), cylinder barrel (9), motor (10), gear-box (11) and lead screw pair (12)；
The lead screw pair (12) is located at the cental axial position of cylinder barrel (9), and motor (10) and lead screw pair (12) are mounted on gear side by side
On case (11), motor (10) drives lead screw pair (12) to rotate by the internal gear pair of gear-box (11), push rod (8) and lead screw pair
(12) it is connected by screw, and push rod (8) is sleeved in lead screw pair (12), lock barrel (1), left steel ball (7), right steel ball (7 '), a left side
Spring (4), right spring (5), locking nut (6), left lock slider (3), right lock slider (3 '), push rod (8) are formed in one
Locking device is put, built-in locking device is located in the space between cylinder barrel (9) and lead screw pair (12), left steel ball (7), right steel ball
(7 ') size is identical, and cylinder barrel (9) inner wall is equipped with a groove, and the size of groove is according to the size of left steel ball (7) and right steel ball (7 ')
Design, cylinder barrel (9) are connected by screw with gear-box (11), and guide sleeve (2) is fixedly connected with cylinder barrel (9), and lead screw pair (12) is used
In by the convert rotational motion of motor (10), for linear motion, locking device built in drive moves back and forth in cylinder barrel (9)；
The lock barrel (1) is located on the outside of push rod (8), and left lock slider (3), left bullet have been sequentially arranged in space therebetween
Spring (4), right spring (5), right lock slider (3 '), and pass through locking nut (6) and be locked, with mounted on lock barrel (1) outside
Left steel ball (7), right steel ball (7 ') in the hole of wall collectively constitute the built-in locking device；
It the described method comprises the following steps：
When so that the electric retractable actuating cylinder is contracted to lock-out state, right lock slider (3 ') is by the effect of right spring (5) by the right side
Steel ball (7 ') is pushed to the left in the groove of cylinder barrel (9), so as to limit built-in locking device action；
When so that the electric retractable actuating cylinder is extend out to lock-out state, guide sleeve (2) is affixed on built-in locking device, left to its /V
Lock slider (3) is to the right pushed to left steel ball (7) in the groove of cylinder barrel (9) by the effect of left spring (4), in limiting
Put locking device action；
It is provided so that the electricity retractable actuating cylinder provides the power packed up and put down for undercarriage and passes through built-in locking mechanism
Coupling mechanism force.
2. the method as described in claim 1, which is characterized in that the groove that cylinder barrel (9) inner wall is set is semicircle.
3. the method as described in claim 1, which is characterized in that the locking nut (6) is affixed on a left side for left lock slider (3)
Side.
4. the method as described in claim 1, which is characterized in that the lock barrel (1) is metalwork.
5. method as claimed in claim 4, which is characterized in that the cylinder barrel (9) is metalwork.
6. method as claimed in claim 5, which is characterized in that between the lock barrel (1) and cylinder barrel (9) by guide ring every
From.
7. the method as described in claim 1, which is characterized in that the guide sleeve (2) is connected through a screw thread with cylinder barrel (9).
8. the method as any one of claim 1 to 7, which is characterized in that electric retractable actuating cylinder extend out to lock-out state
When, the lock barrel (1) is affixed on the left of lock barrel (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711210382.0A CN108116666A (en) | 2017-11-28 | 2017-11-28 | The reliable locking method of electric retractable actuating cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711210382.0A CN108116666A (en) | 2017-11-28 | 2017-11-28 | The reliable locking method of electric retractable actuating cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108116666A true CN108116666A (en) | 2018-06-05 |
Family
ID=62228609
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711210382.0A Pending CN108116666A (en) | 2017-11-28 | 2017-11-28 | The reliable locking method of electric retractable actuating cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108116666A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110758724A (en) * | 2019-11-12 | 2020-02-07 | 中航飞机起落架有限责任公司 | Self-locking mechanism for landing gear down position of airplane |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB587460A (en) * | 1944-06-23 | 1947-04-25 | William Gerald Cooke Vance | Improvements in lifting jacks and the like |
| CN101224791A (en) * | 2007-01-19 | 2008-07-23 | 陕西燎原航空机械制造公司 | Electric retracting-releasing device for pint-sized airplane undercarriage |
| 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 |
| CN103708026A (en) * | 2013-12-30 | 2014-04-09 | 湖北航达科技有限公司 | Dual-redundancy electric acting barrel |
| US20150285350A1 (en) * | 2014-04-08 | 2015-10-08 | Messier-Bugatti-Dowty | Method for maneuvering doors of bays of aircraft, and actuator used therefor |
| CN204776004U (en) * | 2015-05-21 | 2015-11-18 | 成都飞机工业（集团）有限责任公司 | Undercarriage pressurized strut targets in place and locks and release mechanism |
| CN106347639A (en) * | 2016-09-08 | 2017-01-25 | 南京航空航天大学 | Electric multistage actuating cylinder retracting and releasing locking device |
-
2017
- 2017-11-28 CN CN201711210382.0A patent/CN108116666A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB587460A (en) * | 1944-06-23 | 1947-04-25 | William Gerald Cooke Vance | Improvements in lifting jacks and the like |
| CN101224791A (en) * | 2007-01-19 | 2008-07-23 | 陕西燎原航空机械制造公司 | Electric retracting-releasing device for pint-sized airplane undercarriage |
| 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 |
| CN103708026A (en) * | 2013-12-30 | 2014-04-09 | 湖北航达科技有限公司 | Dual-redundancy electric acting barrel |
| US20150285350A1 (en) * | 2014-04-08 | 2015-10-08 | Messier-Bugatti-Dowty | Method for maneuvering doors of bays of aircraft, and actuator used therefor |
| CN204776004U (en) * | 2015-05-21 | 2015-11-18 | 成都飞机工业（集团）有限责任公司 | Undercarriage pressurized strut targets in place and locks and release mechanism |
| CN106347639A (en) * | 2016-09-08 | 2017-01-25 | 南京航空航天大学 | Electric multistage actuating cylinder retracting and releasing locking device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110758724A (en) * | 2019-11-12 | 2020-02-07 | 中航飞机起落架有限责任公司 | Self-locking mechanism for landing gear down position of airplane |
| CN110758724B (en) * | 2019-11-12 | 2021-01-01 | 中航飞机起落架有限责任公司 | Self-locking mechanism for landing gear down position of airplane |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180605 |