CN108116665A - Pulling force is born under stretching state and electric retractable actuating cylinder that thrust is reliably locked - Google Patents
Pulling force is born under stretching state and electric retractable actuating cylinder that thrust is reliably locked Download PDFInfo
- Publication number
- CN108116665A CN108116665A CN201711210313.XA CN201711210313A CN108116665A CN 108116665 A CN108116665 A CN 108116665A CN 201711210313 A CN201711210313 A CN 201711210313A CN 108116665 A CN108116665 A CN 108116665A
- Authority
- CN
- China
- Prior art keywords
- steel ball
- barrel
- lock
- cylinder
- lead screw
- 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.)
- Pending
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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
Abstract
The present invention relates to the electric retractable actuating cylinders for bearing pulling force under a kind of stretching state and thrust is reliably locked, and are related to frame for movement technical field.A kind of electric retractable actuating cylinder 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 bears pulling force under a kind of stretching state and thrust is reliable
The electric retractable actuating cylinder of locking.
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 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 can be top in order to solve the above technical problem, the present invention provides pulling force and thrust is born under a kind of stretching state
The electric retractable actuating cylinder of lock, including lock barrel 1, guide sleeve 2, left lock slider 3, right lock slider 3 ', left spring 4, right spring
5th, 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；
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.
(3) advantageous effect
A kind of electric retractable actuating cylinder provided by the invention provides the power packed up and put down for undercarriage and passes through built-in lock
Determine mechanism and reliable coupling mechanism force is provided, reliably lock when electric retractable actuating cylinder bears pulling force and thrust under stretching state, from
External force is disturbed, and is improved the reliability of Landing Gear System, is ensured the safe landing of aircraft.
Description of the drawings
Fig. 1 is under a kind of stretching state provided by the invention to bear pulling force and electric retractable actuating cylinder that thrust is reliably locked
Middle contraction lock-out state lower structure schematic diagram；
Fig. 2 is under a kind of stretching state provided by the invention to bear pulling force and electric retractable actuating cylinder that thrust is reliably locked
Built-in locking apparatus structure schematic diagram under middle contraction lock-out state；
Fig. 3 is under a kind of stretching state provided by the invention to bear pulling force and electric retractable actuating cylinder that thrust is reliably locked
Middle guide sleeve structure schematic diagram；
Fig. 4 is under a kind of stretching state provided by the invention to bear pulling force and electric retractable actuating cylinder that thrust is reliably locked
Middle stretching lock-out state lower structure schematic diagram.
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, bearing pulling force under stretching state provided by the invention and electric folding and unfolding start that thrust is reliably locked
Cylinder, the pressurized strut 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, lead screw pair 12 are located at cylinder barrel
9 cental axial position, motor 10 and lead screw pair 12 are mounted on gear-box 11 side by side, the internal gear that motor 10 passes through gear-box 11
Subband moves lead screw pair 12 and rotates, 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, left lock slider 3, right lock slider 3 ', push rod 8 form
One built-in locking device, built-in locking device is in the space between cylinder barrel 9 and lead screw pair 12, left steel ball 7, right steel ball 7 '
Size is identical, and 9 inner wall of cylinder barrel is equipped with a groove, and the size of groove is semicircle according to the size design of left steel ball 7 and right steel ball 7 '
Shape.Cylinder barrel 9 is connected by screw with gear-box 11, and guide sleeve 2 is connected through a screw thread with cylinder barrel 9, and lead screw pair 12 is by motor 10
For linear motion, locking device built in drive moves back and forth convert rotational motion in cylinder barrel 9, leads between lock barrel 1 and cylinder barrel 9
It crosses guide ring and avoids the two metalwork direct friction, reduce 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, bear pulling force under stretching state provided by the invention and electric folding and unfolding that thrust is reliably locked is made
Dynamic cylinder, when electric retractable actuating cylinder is contracted to lock-out state, right lock slider 3 ' is pushed right steel ball 7 ' by the effect of right spring 5
To the groove of cylinder barrel 9, so as to limit built-in locking device action, reach locking purpose.
As shown in Figure 3,4, bear pulling force under stretching state provided by the invention and electric folding and unfolding that thrust is reliably locked is made
Dynamic cylinder, electric retractable actuating cylinder when extending out to lock-out state left lock slider 3 left steel ball 7 is pushed away to the right by the effect of left spring 4
It send to the groove of cylinder barrel 9, so as to limit built-in locking device action, reaches locking purpose.
As shown in figure 4, bearing pulling force under stretching state provided by the invention and electric folding and unfolding start that thrust is reliably locked
Cylinder, when electric retractable actuating cylinder extend out to lock-out state, built-in locking device is blocked in the position for being conducive to locking by guide sleeve 2,
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 (7)
1. it bears pulling force under a kind of stretching state and electric retractable actuating cylinder that thrust is reliably locked is it is characterised in that it includes lock tube
Cylinder (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.
2. electricity retractable actuating cylinder as described in claim 1, which is characterized in that the groove that cylinder barrel (9) inner wall is set is semicircle
Shape.
3. electricity retractable actuating cylinder as described in claim 1, which is characterized in that the locking nut (6) is affixed on left lock slider
(3) left side.
4. electricity retractable actuating cylinder as described in claim 1, which is characterized in that the lock barrel (1) is metalwork.
5. electricity retractable actuating cylinder as claimed in claim 4, which is characterized in that the cylinder barrel (9) is metalwork.
6. electricity retractable actuating cylinder as claimed in claim 5, which is characterized in that pass through between the lock barrel (1) and cylinder barrel (9)
Guide ring is isolated.
7. such as electric retractable actuating cylinder according to any one of claims 1 to 6, which is characterized in that the guide sleeve (2) and cylinder barrel
(9) it is connected through a screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711210313.XA CN108116665A (en) | 2017-11-28 | 2017-11-28 | Pulling force is born under stretching state and electric retractable actuating cylinder that thrust is reliably locked |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711210313.XA CN108116665A (en) | 2017-11-28 | 2017-11-28 | Pulling force is born under stretching state and electric retractable actuating cylinder that thrust is reliably locked |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108116665A true CN108116665A (en) | 2018-06-05 |
Family
ID=62228613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711210313.XA Pending CN108116665A (en) | 2017-11-28 | 2017-11-28 | Pulling force is born under stretching state and electric retractable actuating cylinder that thrust is reliably locked |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108116665A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110712745A (en) * | 2019-10-23 | 2020-01-21 | 中航飞机起落架有限责任公司 | Bearable pull rod device |
| 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 |
| CN114313228A (en) * | 2021-12-23 | 2022-04-12 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Mechanical locking device for external hydraulic actuator cylinder |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| 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 |
| 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 |
-
2017
- 2017-11-28 CN CN201711210313.XA patent/CN108116665A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| 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 |
| 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 |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110712745A (en) * | 2019-10-23 | 2020-01-21 | 中航飞机起落架有限责任公司 | Bearable pull rod device |
| 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 |
| CN114313228A (en) * | 2021-12-23 | 2022-04-12 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Mechanical locking device for external hydraulic actuator cylinder |
| CN114313228B (en) * | 2021-12-23 | 2023-05-30 | 中国航空工业集团公司金城南京机电液压工程研究中心 | External hydraulic actuator mechanical locking device |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180605 |
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| WD01 | Invention patent application deemed withdrawn after publication |