CN110356545A - A kind of unmanned plane undercarriage control retaining mechanism - Google Patents
A kind of unmanned plane undercarriage control retaining mechanism Download PDFInfo
- Publication number
- CN110356545A CN110356545A CN201910774780.8A CN201910774780A CN110356545A CN 110356545 A CN110356545 A CN 110356545A CN 201910774780 A CN201910774780 A CN 201910774780A CN 110356545 A CN110356545 A CN 110356545A
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- China
- Prior art keywords
- piston rod
- cylinder barrel
- closing piece
- unmanned plane
- wall
- 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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- 230000007246 mechanism Effects 0.000 title claims abstract description 26
- 230000033001 locomotion Effects 0.000 claims abstract description 11
- 230000005540 biological transmission Effects 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims abstract description 8
- 230000008569 process Effects 0.000 claims abstract description 7
- 230000006698 induction Effects 0.000 claims description 24
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 230000001939 inductive effect Effects 0.000 claims description 4
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000007373 indentation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C25/00—Alighting gear
- B64C25/02—Undercarriages
- B64C25/08—Undercarriages non-fixed, e.g. jettisonable
- B64C25/10—Undercarriages non-fixed, e.g. jettisonable retractable, foldable, or the like
- B64C25/18—Operating mechanisms
- B64C25/26—Control or locking systems therefor
Abstract
The invention discloses a kind of unmanned plane undercarriage control retaining mechanisms, including cylinder barrel, the piston rod being slidably arranged in cylinder barrel and the Power Component for driving piston rod movement, the piston rod is provided with through-hole along its axis, piston rod one end is pierced by cylinder barrel and is provided with guide sleeve between cylinder barrel, head is connected on the traversing through end of piston rod, the piston rod other end forms the sliding sleeve being slidably matched with inner wall of cylinder, and the Power Component includes providing the motor of power and guaranteeing that piston rod stablizes flexible transmission locking mechanism.The entire folding and unfolding process of structure of the invention is relatively smooth, mechanical connection relationship is simple and connection is reliable, and design is very ingenious, and the unlock that just can be carried out piston rod can only be rotated by screw, with enough support strengths or rigidity, it is able to bear the impact generated when undercarriage contacts to earth.
Description
Technical field
The present invention relates to unmanned plane extension and retraction system fields, and in particular to a kind of unmanned plane undercarriage control retaining mechanism.
Background technique
Landing-gear system is the important component of aircraft, and the working performance of the system directly influences the peace of aircraft
Full property and mobility.Landing-gear system is mainly by retractable actuating cylinder, stored position lock, folding and unfolding operating mechanism, control system
Deng composition.Since undercarriage is larger with the impact force of ground face contact after folding and unfolding acts in place, this is just tested in pressurized strut very much
The enabling capabilities of locking mechanism can neatly carry out locking or unlocking movement, moreover it is possible to lock or unlock keep afterwards in place compared with
High stability of strutting system.Existing pressurized strut locking mechanism mainly includes mechanical lock or liquid (gas) two kinds of forms of dynamic lock, liquid (gas)
Dynamic lock cost is high and structure is complicated, is not suitable for this lower-cost small device of unmanned plane, and existing some mechanical is locked
Have the shortcomings that structure is complicated and stability is not high, there is very big room for improvement.
Summary of the invention
That the purpose of the present invention is to provide a kind of structures is simple, is skillfully constructed and the reliable unmanned plane undercarriage of supporting & stablizing
Folding and unfolding retaining mechanism.
The purpose of the present invention is what is be achieved through the following technical solutions: a kind of unmanned plane undercarriage control retaining mechanism,
Including cylinder barrel, the piston rod being slidably arranged in cylinder barrel and the Power Component for driving piston rod movement, the piston rod is along it
Axis is provided with through-hole, and piston rod one end is pierced by cylinder barrel and is provided with guide sleeve between cylinder barrel, connects on the traversing through end of piston rod
Have a head, the piston rod other end forms the sliding sleeve being slidably matched with inner wall of cylinder, the Power Component include motor and
It is driven locking mechanism, the motor is fixed on the outer wall of cylinder barrel, and the transmission locking mechanism includes screw rod and is sleeved on silk
On bar and pass through the silk braid being threadedly engaged, described screw rod one end is penetrated to the through-hole of piston rod, and the screw rod other end and motor
It is connected with retarder between output end, is machined with front and back two along its axial direction on the sliding sleeve side wall and encloses card hole group, every circle card hole group
Inside include at least two card holes, closing piece is provided in each card hole, setting is appointed there are two induction is respectively used on the cylinder barrel
It anticipates the microswitch of a front side closing piece and any one rear side closing piece, the silk braid is located in sliding sleeve, and on silk braid external annulus
It is machined with the boss for pushing corresponding front side or rear side closing piece back and forth.
Further, the silk braid includes screw and lock tube, screw with screw rod by being threadedly engaged, lock tube be located at screw and
Between piston rod, and lock tube one end is fixedly connected with screw, and the boss is annular and processes the boss on the external annulus of lock tube
The front side closing piece that will be close to piston rod when advance pushes and drives piston rod forward slip, and boss will be far from piston rod when retreating
Rear side closing piece pushes and piston rod is driven to slide backward.
Further, there are two induction lockholes, two induction lockholes to be located at cylinder barrel for processing on the side wall of the cylinder barrel
Both ends, all card holes are respectively positioned between two induction lockholes, and any one card hole in front ring card hole group can be with front end
Incude lockhole connection, rear any one card hole enclosed in card hole group can be connected to the induction lockhole of rear end, and described two fine motions are opened
The inductive head of pass is located in two induction lockholes.
Further, the circle boss two sides oblique angle Jun Daoyou processed on the lock tube external annulus, described two closing piece phases
Mutually the inner end close to side be machined with the matched scarf in oblique angle, the outer end of closing piece is in smooth dome shape.
Further, the lock tube is machined with a circle radial direction slot, diameter far from screw and on the side ring wall of its end
It is provided with steel ball into slot, spring is fixed between steel ball and radial slot hole bottom wall, is machined with two on the inner wall of the sliding sleeve
The radial ringed slot of group, two groups of radial ringed slots are respectively positioned on piston rod and between the closing pieces of piston rod.
Further, the distance of two groups of radial ringed slots is less than or equal to the distance between two closing pieces.
The present invention is mobile by the screw in motor drives screw mandrel and lock tube is made to follow movement, and the boss on lock tube pushes phase
It answers the closing piece of side mobile, drives the closing piece of other side to exit inner wall of cylinder rear end annular groove and follow movement, while being detached from micro-
Dynamic switch is to indicate that piston rod starts to extend, and after piston rod elongation in place, other side closing piece enters inner wall of cylinder front end annular groove
And it is formed and overs lock state, while closing piece is contacted with the microswitch of front end to indicate in place.It can similarly realize withdrawal
Unlock and withdrawal locking flow in the process.Entire folding and unfolding process is relatively smooth, and mechanical connection relationship is simple and connection is reliable, if
Meter is very ingenious, and the unlock that just can be carried out piston rod can only be rotated by screw, has enough support strengths or rigidity, can
Bear the impact generated when undercarriage contacts to earth.In addition, the transmission locking mechanism in the present invention is applied to unmanned plane undercarriage
Pressurized strut has great popularization value, and can have very reliable stablize while substantially reducing pressurized strut manufacturing cost
Property, and be driven locking mechanism and be equally applicable to other mechanical-stretching components in addition to unmanned plane undercarriage, undercarriage
Field equally has a good application prospect.
Detailed description of the invention
Fig. 1 is main sectional view of the invention；
Fig. 2 is cross-sectional view of bowing of the invention；
Fig. 3 is enlarged diagram at the A of Fig. 1.
Marked in the figure: 1- motor；2- retarder；3- screw rod；4- cylinder barrel；5- guide sleeve；6- piston rod；7- head；8- is micro-
Dynamic switch；9- is driven locking mechanism；61- sliding sleeve；The radial ringed slot of 62-；91- screw；92- lock tube；93- closing piece；94- spring；
95- steel ball；96- radial direction slot；97- boss.
Specific embodiment
As shown in FIG. 1 to 3, unmanned plane undercarriage control retaining mechanism provided in this embodiment includes cylinder barrel 4, sliding
The Power Component that the piston rod 6 in cylinder barrel 4 is arranged in and piston rod 6 is driven to move, the piston rod 6 is provided with logical along its axis
Hole, 6 one end of piston rod are pierced by cylinder barrel 4 and are provided with guide sleeve 5 between cylinder barrel 4, be fixed in the through-hole of 6 traversing through end of piston rod
For connecting the head 7 of remaining component, 6 other end of piston rod forms the sliding sleeve 61 being slidably matched with 4 inner wall of cylinder barrel, sliding
The outer diameter of set 61 is 1.5~2.5 times of 6 outer diameter of piston rod, and preferably 2 times, the internal diameter of sliding sleeve 61 is 6 through-hole diameter of piston rod
1.5~2.5 times, preferably 2 times can guarantee higher connection support strength in this way.The Power Component includes motor 1 and transmission
Locking mechanism 9, the motor 1 are fixed on outer wall of the cylinder barrel 4 far from 7 one end of head, and the transmission locking mechanism 9 includes screw rod
It 3 and is sleeved on screw rod 3 and the silk braid by being threadedly engaged, described 3 one end of screw rod rotationally penetrates logical to piston rod 6
In hole, and retarder 2 is connected between 1 output end of 3 other end of screw rod and motor, retarder 2 is gear reduction unit, motor 1
Output revolving speed reaches preferable deceleration purpose, screw rod 3 is far from head 7 by driving screw rod 3 to rotate after multiple stage gear reduction again
One end be rotatably assorted by the inner wall of bearing and cylinder barrel 4, to form stable rotational support.
In the present embodiment, the silk braid is located in sliding sleeve, and silk braid includes the screw 91 and lock tube 92 of tubular, screw 91 and silk
Bar 3 is by being threadedly engaged, and lock tube 92 is between screw 91 and piston rod 6, and 92 one end of lock tube and the end face of screw 91 pass through
Bolt is fixedly connected, and screw rod 3 rotates and screw 91 and lock tube 92 is driven to move rotate on it, to keep lock tube 92 slowly mobile
And contacted with the side wall of the connection piston rod 6 of sliding sleeve 61, to drive 6 forward slip of piston rod.In order to judge piston rod 6 whether before
Row is additionally arranged stroke induction structure in place, in this programme, specifically, is machined with front and back along its axial direction on the side wall of the sliding sleeve 61
Two circle card hole groups include six card holes in every circle card hole group in the present embodiment, and every six card holes enclosed in card hole group are uniformly divided
Cloth is on the side wall of sliding sleeve 61, and two circle card hole groups one in front and one in back arrange on the side wall of sliding sleeve 61 and arrangement mode is identical, each
Closing piece 93 is provided in card hole, processing is located at there are two lockhole, two induction lockholes are incuded on the side wall of the cylinder barrel 4
The rear and front end of cylinder barrel 4, the two all card holes enclosed in card hole groups are always positioned between two induction lockholes, set on the cylinder barrel 4
It is respectively used to incude the microswitch 8 of any one front side closing piece 93 and any one rear side closing piece 93 there are two setting, before described
Side chain block 93, which refers to, encloses card hole in card hole group after the closing piece 93 being located in front ring card hole group in card hole, the finger of rear side closing piece 93 are located at
Interior closing piece 93, also, front ring card hole group in one of card hole Forward in place after can be connected to the induction lockhole of front end,
The one of card hole enclosed in card hole group afterwards can be connected to after moving back in place with the induction lockhole of rear end, described two microswitches
8 inductive head is located in two induction lockholes, and preferably, two microswitches 8 are in the same plane, corresponding to block
Closing piece 93 in hole, which can be fallen into, to be incuded in lockhole to corresponding to and incudes with the formation of microswitch 8.
It is machined with the boss 97 for pushing corresponding front side or rear side closing piece 93 back and forth on the external annulus of the lock tube 92, has
Body, the boss 97 is annular and processes on the external annulus at 92 middle part of lock tube, the 97 two sides oblique angle Jun Daoyou of boss, front end lock
The inner end of block 93 and the side close to each other of rear end closing piece 93 be machined with the matched scarf in oblique angle, the outer end of closing piece 93 is in
Smooth dome shape will be close to piston using the abutment action of scarf when that is, boss 97 advances when 92 forward slip of lock tube
The closing piece 93 of bar 6 pushes, and other side closing piece 93 is detached from the compacting of boss 97 and follows movement, is dome shape since it is external, very
It is easy that induction lockhole can be carried over and follows movement, when screw 91 and lock tube 92 move ahead in place, pass through lock tube 92 and sliding sleeve
The effect that 61 bottom walls abut each other drives entire 6 forward slip of piston rod, when piston rod 6 moves ahead in place, close to piston rod 6
Closing piece 93 is fallen into the induction lockhole of 7 one end of head, and the inductive head of closing piece 93 and microswitch 8 forms activation signal, the letter
Number by cable transmission to backstage controller, controller control motor 1 shut down, indicate piston rod elongation in place, i.e., it is complete
Movement is overed at pressurized strut, pressurized strut folding and unfolding acts similarly, and control motor 1 inverts, and retreats screw 91 and lock tube 92, Zhi Daoyuan
Closing piece 93 from head 7 is fallen into formation induction in corresponding induction lockhole.
In order to increase rotational slide fluency of the lock tube 92 in sliding sleeve 61, the lock tube 92 is far from screw 91 and close to it
A circle radial direction slot 96 is machined on the side ring wall of end, the quantity of radial slot 96 is preferably four, and four radial slots
96 is evenly distributed in a ring along 61 side wall of sliding sleeve, is provided with steel ball 95 for detent in each radial direction slot 96, steel ball 95 with
It is fixed with spring 94 between radial 96 bottom wall of slot, two groups of radial ringed slots 62, steel ball are machined on the inner wall of the sliding sleeve 61
The structure similar to ball bearing can be formed with radial ringed slot 62, increases the smooth detent of Mechanical Moving, two groups of radial direction rings
Shape slot 62 is respectively positioned on piston rod 6 and between the closing piece 93 of piston rod 6, and the distance of two groups of radial ringed slots 62 is less than or equal to
The distance between two closing pieces 93 are preferably between equal to two closing pieces 93 of distance of two groups of radial ringed slots 62 in the present embodiment
Distance, initial state be retracted state when, the closing piece 93 that boss 63 will be far from piston rod 6 is compressed on corresponding induction lockhole
Signal that is interior, waiting motor 1 to start, motor 1 make lock tube 92 move ahead, drive all closing pieces 93 of front and rear sides along cylinder barrel after rotating forward
4 inner walls move ahead, and the microswitch 8 for being detached from rear end indicates that overing movement starts, and after piston rod 6 moves ahead in place, front side owns
Closing piece fall into 4 inner wall front end of cylinder barrel process annular groove in, at this point, screw 91 continue keep move ahead, until boss 97 will before
All closing pieces 93 of side are stablized in indentation to annular groove, at this point, one of closing piece 93 of front end is fallen into the induction lock of front end
It is formed and is incuded with the microswitch 8 of front end in hole, lock into place is overed in expression, is entered between cylinder barrel 4 and piston rod 6 and is overed locking
State.Similarly, control motor 1 inverts, and lock tube 92 retreats, and drives all closing pieces 93 of front and rear sides to retreat along 4 inner wall of cylinder barrel straight
All closing pieces 93 of rear side are stablized in the annular groove that indentation is processed to 4 rear inner wall of cylinder barrel to boss 97, at this point, its of rear end
In a closing piece 93 fall into the induction lockhole of rear end, the microswitch 8 of rear end, which incudes, simultaneously issues signal in place, cylinder barrel 4 with
Enter between piston rod 6 and withdraw lock state, to prevent pressurized strut from car slipping phenomenon occur under retracted state.
The above is only the preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto, any
The transformation and replacement carried out based on technical solution provided by the present invention and inventive concept should all be covered in protection model of the invention
In enclosing.
Claims (6)
1. a kind of unmanned plane undercarriage control retaining mechanism, including cylinder barrel, the piston rod being slidably arranged in cylinder barrel and drive
The Power Component of piston bar movement, it is characterised in that: the piston rod is provided with through-hole along its axis, and piston rod one end is pierced by cylinder
Cylinder and guide sleeve is provided between cylinder barrel, head is connected on the traversing through end of piston rod, the piston rod other end forms
The sliding sleeve being slidably matched with inner wall of cylinder, the Power Component include motor and transmission locking mechanism, and the motor is fixed on cylinder
On the outer wall of cylinder, the transmission locking mechanism includes screw rod and is sleeved on screw rod and passes through the silk braid being threadedly engaged, described
Screw rod one end is penetrated to the through-hole of piston rod, and retarder is connected between the screw rod other end and motor output end, the cunning
Front and back two is machined with along its axial direction on set side wall and encloses card hole group, and every circle card hole group is interior including at least two card holes, in each card hole
It is provided with closing piece, there are two be respectively used to incude any one front side closing piece and any one rear side lock for setting on the cylinder barrel
The microswitch of block, the silk braid are located in sliding sleeve, and be machined on silk braid external annulus for push back and forth corresponding front side or after
The boss of side chain block.
2. unmanned plane undercarriage control retaining mechanism according to claim 1, it is characterised in that: the silk braid includes silk
Female and lock tube, screw is with screw rod by being threadedly engaged, and lock tube is between screw and piston rod, and lock tube one end is fixed with screw
Connection, the boss are annular and process on the external annulus of lock tube that boss will be close to piston rod front side closing piece when advancing pushes away
Piston rod forward slip is moved and drives, boss will be far from piston rod rear side closing piece when retreating pushes and piston rod is driven to slide backward
It is dynamic.
3. unmanned plane undercarriage control retaining mechanism according to claim 1, it is characterised in that: the side wall of the cylinder barrel
Upper processing is located at the both ends of cylinder barrel there are two lockhole, two induction lockholes are incuded, and all card holes are respectively positioned on two induction locks
Between hole, and any one card hole in front ring card hole group can be connected to the induction lockhole of front end, any in rear circle card hole group
One card hole can be connected to the induction lockhole of rear end, and the inductive head of described two microswitches is located at two induction lockholes
It is interior.
4. unmanned plane undercarriage control retaining mechanism according to claim 2 or 3, it is characterised in that: outside the lock tube
Processed on ring wall one circle the boss two sides oblique angle Jun Daoyou, the inner end of described two closing piece sides close to each other be machined with tiltedly
The matched scarf in angle, the outer end of closing piece are in smooth dome shape.
5. unmanned plane undercarriage control retaining mechanism according to claim 4, it is characterised in that: the lock tube is far from silk
It is machined with a circle radial direction slot on female and side ring wall close to its end, is provided with steel ball, steel ball and radial slot in radial slot
It is fixed with spring between the bottom wall of hole, two groups of radial ringed slots, two groups of radial ringed equal positions of slot are machined on the inner wall of the sliding sleeve
In piston rod and between the closing piece of piston rod.
6. unmanned plane undercarriage control retaining mechanism according to claim 5, it is characterised in that: two groups of radial ringed slots
Distance be less than or equal to the distance between two closing pieces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910774780.8A CN110356545A (en) | 2019-08-21 | 2019-08-21 | A kind of unmanned plane undercarriage control retaining mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910774780.8A CN110356545A (en) | 2019-08-21 | 2019-08-21 | A kind of unmanned plane undercarriage control retaining mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110356545A true CN110356545A (en) | 2019-10-22 |
Family
ID=68224955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910774780.8A Pending CN110356545A (en) | 2019-08-21 | 2019-08-21 | A kind of unmanned plane undercarriage control retaining mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110356545A (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 |
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| CN108006011A (en) * | 2017-11-30 | 2018-05-08 | 徐州徐工液压件有限公司 | Double outlet-rod hydraulic cylinders with locking positioning function |
| KR101927488B1 (en) * | 2017-09-07 | 2018-12-11 | 주식회사 한화 | Linear actuator having free fall operation |
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| GB762722A (en) * | 1953-11-18 | 1956-12-05 | Bendix Aviat Corp | Improvements in or relating to locking devices, more particularly for the hydraulic actuators of aircraft landing gear |
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| 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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