CN206231634U - A kind of SUAV hits net energy-absorbing retracting device - Google Patents
A kind of SUAV hits net energy-absorbing retracting device Download PDFInfo
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- CN206231634U CN206231634U CN201621332055.3U CN201621332055U CN206231634U CN 206231634 U CN206231634 U CN 206231634U CN 201621332055 U CN201621332055 U CN 201621332055U CN 206231634 U CN206231634 U CN 206231634U
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Abstract
Net energy-absorbing retracting device is hit the utility model discloses a kind of SUAV, the direction of unmanned plane is reclaimed as front with energy-absorbing retracting device, moved behind part of the soft net in addition to edge and form bag-shaped, the edge of soft net forms a square opening, many one end of spring being parallel to each other uniformly are installed on four sides of the square opening of soft net, ground is fixed in the lower end of four montants, two two ends of the first cross bar for being parallel to each other and being distributed up and down are connected with the upper end of above two montants and hypomere respectively, two are parallel to each other and the two ends of the second cross bar of left and right distribution are connected with the upper end of two montants below and the first cross bar of top near the position at two ends respectively, first cross bar and the second cross bar are mutually perpendicular to, many other ends of spring are uniform be installed on by two first cross bars and the square body of rod that above two montants are formed on.The utility model as energy absorbing component, unmanned maneuver energy is absorbed by the plastic deformation of spring using extension spring, its simple structure, is easy to application.
Description
Technical field
The utility model is related to a kind of SUAV to hit net energy-absorbing retracting device, belongs to unmanned plane recovery technology field.
Background technology
Referred to as " unmanned plane ", english abbreviation is " UAV " to UAV, using radio robot and providing for oneself
The not manned aircraft that presetting apparatus is manipulated.
Common unmanned plane way of recycling mainly has parachuting recovery, net collision recovery and the type such as alightings run at present, wherein,
Net collision recovery mode is adapted to fixed-wing unmanned plane and is used on narrow recovery place or naval vessels.Foreign countries are to unmanned plane net collision recovery
Research starts from late 1970s, so far, existing " pioneer ", " Aquila/goshawk ", " silver fox ", " killer bee ", " detect
Examine soldier " etc. many types of unmanned plane successfully used net collision recovery system.Research of the China to unmanned aerial vehicle net recovery technology
Start from early 1990s, including the research of net collision recovery ground interdiction device, carrier-borne net collision recovery technical research and hit net
Recovery system research etc..Unmanned aerial vehicle net recovery system conventional at present mainly include arresting net, column, guiding rope, damper,
The parts such as drawstring, draw-gear and pulley, conventional energy-absorbing critical component is turbine damper.Because turbine damper design is multiple
Miscellaneous, manufacturing cost is higher, is not suitable for the recovery of SUAV.Therefore, simple, economic, effective energy absorption device how is designed
It is that prior art has problem to be solved to reclaim SUAV.
Utility model content
The purpose of this utility model be that provided to solve the above problems a kind of simple structure, effect is significant it is small
Type unmanned aerial vehicle net energy-absorbing retracting device.
The utility model is achieved through the following technical solutions above-mentioned purpose：
A kind of SUAV hits net energy-absorbing retracting device, including soft net, many springs, four montants, two pieces
One cross bar and two second cross bars, the direction of unmanned plane is reclaimed as front with the energy-absorbing retracting device, and the soft net removes edge
Moved behind outer part and form bag-shaped, the edge of the soft net forms a square opening, many springs being parallel to each other
One end be uniformly installed on the soft net square opening four sides, ground, two are fixed in the lower end of four montants
The two ends of first cross bar for being parallel to each other and being distributed up and down are connected with the upper end of above two montants and hypomere respectively,
Two be parallel to each other and left and right distribution second cross bar two ends respectively with two upper ends and top of the montant below
First cross bar near two ends position connect, first cross bar and second cross bar are mutually perpendicular to, described in many
The other end of spring is uniform be installed on by two first cross bars and the square body of rod that above two montants are formed on.Use
When, unmanned plane enters from the square opening of soft net, and buffering is realized under spring tension effect, completes to reclaim.
Preferably, four montants, two first cross bars and two second cross bars are steel pipe, soft net
General to be made using plastic ties, spring is coil spring；The height of the montant is 5m, a diameter of 40mm, wall thickness are
4mm。
The beneficial effects of the utility model are：
SUAV described in the utility model hits net energy-absorbing retracting device using extension spring as energy absorbing component, passes through
The plastic deformation of spring absorbs unmanned maneuver energy, its simple structure, be easy to make, it is with low cost, be easy to application.
Brief description of the drawings
Fig. 1 is the stereogram that SUAV described in the utility model hits net energy-absorbing retracting device；
Fig. 2 is that SUAV described in the utility model hits net energy-absorbing retracting device and removes the solid after soft net and spring
Figure；
Fig. 3 is the main structure diagram of the spring that SUAV described in the utility model hits net energy-absorbing retracting device
Figure.
Specific embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings：
As shown in Figure 1, Figure 2 and Figure 3, SUAV described in the utility model hit net energy-absorbing retracting device including one it is soft
Net 2,1, four montants of many springs, two first cross bars and two second cross bars, four montants are respectively montant 3,5,9,10,
Two first cross bars are respectively the first cross bar 6,7, and two second cross bars are respectively the second cross bar 4,8, are reclaimed with the energy-absorbing and filled
The direction for putting back into receipts unmanned plane is front, is moved behind part of the soft net 2 in addition to edge and forms bag-shaped, and the edge of soft net 2 forms one
Square opening, many one end of spring 1 being parallel to each other uniformly are installed on four sides of the square opening of soft net 2, and four are erected
Ground is fixed in the lower end of bar 3,5,9,10, two two ends of the first cross bar 6,7 for being parallel to each other and being distributed up and down respectively with it is preceding
The upper end of two, face montant 3,9 and hypomere are connected, two be parallel to each other and the second cross bar 4,8 of left and right distribution two ends respectively with
The upper end of two montants 5,10 next and the first cross bar 6 of top are connected near the position at two ends, and the first cross bar 6,7 is respectively with the
Two cross bars 4,8 are mutually perpendicular to, and many other ends of spring 1 are uniform to be installed on by two first cross bars 6,7 and above two montants
3rd, on the 9 square bodies of rod for being formed；Four montants, 3,5,9,10, two first cross bars 6,7 and two second cross bars 4,8 are steel
Pipe, soft net 2 is typically made using plastic ties, and spring 1 is coil spring；The height of montant 3,5,9,10 is 5m, diameter
For 40mm, wall thickness are 4mm.
As shown in figure 1, when using, unmanned plane enters from the square opening of soft net 2, it is real under the pulling force effect of spring 1
Now buffer, complete to reclaim.
In order to the recovery ability that net energy-absorbing retracting device is hit to SUAV described in the utility model is verified, below
It is specifically described with decision design method and an Application Example, but following methods and not exclusive method for designing, it is not this
The protection object of utility model.
With reference to Fig. 1-Fig. 3, SUAV described in the utility model hits the method for designing of net energy-absorbing retracting device, including with
Lower step：
(1) unmanned maneuver energy is calculated：
Hit net moment unmanned plane during flying speed V0, unmanned plane quality m, by formula (1) the unmanned maneuver energy of calculating：
In formula, UuavIt is the kinetic energy at unmanned aerial vehicle net moment, unit J；
(2) structural parameters of spring 1 are calculated, is comprised the following steps：
(2.1) quantity n, the spring filament diameter d of spring 1, the number of turns n of spring 1 of spring 1 are sets；
(2.2) by spring 1 quantity calculate montant 3,5,9,10 (hereafter directly with " montant " represent wherein one montant or
All montants, without reference numerals) elasticity can Ure；
This step circular is：
Montant is produced elastic deformation by the pulling force of spring 1, and the every strain energy of montant is calculated by formula (2)：
In formula：UreIt is montant in the strain energy of stretch section, unit J；MreIt is the moment of flexure of montant cross section, unit m2.N；Gr
It is the modulus of shearing of montant material, unit Pa；JrpIt is the pole inertia of montant cross section away from unit m4；lrFor montant highly, unit
m；
(2.3) elasticity for calculating spring 1 by the spring filament diameter d of spring 1 can Use；
This step circular is：Strain energy of each spring 1 in stretch section is calculated by formula (3)：
In formula：UseIt is spring 1 in the strain energy of stretch section, unit J；MseFor the spring silk of spring 1 starts surrender moment correspondence
Spring silk cross section moment of torsion, unit m2.N；GsIt is the modulus of shearing of the spring silk of spring 1, unit Pa；JspFor the spring silk of spring 1 is horizontal
The pole inertia in section is away from unit m4；L is the spring filament length degree of spring 1, unit m；
(2.4) by the quantity of spring 1, montant elasticity energy UreElasticity with spring 1 can UseCalculate the plasticity energy U of spring 1sp；
This step circular is：
The strain energy of the plasticity section of spring 1 is calculated by formula (4)：
In formula：N is montant quantity, and this example is the quantity that 4, n is spring 1；
(2.5) the plasticity energy U of spring 1 is judgedspWhether zero is less than or equal to；
(2.6) if the judged result of step (2.5) is yes, return to step (2.1), or reduce the quantity n of spring 1, or
Reduce the spring filament diameter d of spring 1, or the number of turns n for reducing spring 1s；
(2.7) if the judged result of step (2.5) is no, by the plasticity energy U of spring 1spThe spring silk for calculating spring 1 is reversed
Angle changes delta Φ；
This step circular is：
Assuming that the spring silk of spring 1 is perfectl plastic material, the torsion of the spring silk plasticity section of spring 1 is calculated by formula (5)
Angle increment：
In formula：ΔΦ is the torsion angle increment of the spring silk plasticity section of spring 1；TseIt is the spring silk plasticity section twisting resistance of spring 1
Square, unit N.m；
(2.8) by the spring filament diameter d of spring 1, the number of turns n of spring 1sCalculate the central diameter D of spring 1；
This step circular is：
The central diameter of spring 1 is calculated by formula (6)：
In formula：D is the central diameter of spring 1, unit m；τseIt is the spring silk shear yield strength of spring 1, unit Pa；D is spring 1
Spring filament diameter, unit m；ngFor unmanned plane reclaims maximum overload；G is acceleration of gravity, unit m/s2；M is unmanned plane quality,
Units/kg；N is the quantity of spring 1；
(2.9) the plastic elongation length H of spring 1 is calculated by the central diameter D of spring silk torsion angle changes delta Φ, spring 1；
This step circular is：
The plastic elongation length of spring 1 is calculated by formula (7)：
In formula：H is the plastic elongation length of spring 1, unit m；
(2.10) by the number of turns n of spring 1sCalculate spring wire length L；
(2.11) judge the plastic elongation length H of spring 1 whether more than spring wire length L；
(2.12) if the judged result of step (2.11) is yes, return to step (1), or increase the quantity n of spring 1, or
Increase spring 1 spring filament diameter d, or spring 1 number of turns ns；
(2.13) if the judged result of step (11) is no, the structural parameters for completing spring 1 are calculated.
With reference to Fig. 1-Fig. 3, illustrate that this SUAV hits setting for net energy-absorbing retracting device with a specific embodiment below
Meter process：
SUAV quality 4kg, hit target speed 20m/s, length 1m, it is desirable to which it is 10 that maximum reclaims overload.
Step one：The spring wire material of spring 1 according to《General service mild steel wire YBT-5294-2006》Choose, then spring
The elastic modulus E of spring wire material about 200GPa, shear modulus G about 77GPa；
Step 2：It is 800J to calculate unmanned aerial vehicle target kinetic energy by formula (1)；The quantity for setting spring 1 is 18, spring 1
Spring filament diameter Ф 3.55mm, the number of turns 10 of spring 1；The plasticity energy 41J of spring 1 is calculated by formula (2)~formula (7),
The plastic elongation length 3.7m of spring 1, the filament length degree 4.7m of spring 1, the plasticity of spring 1 can be more than zero, and spring 1 plasticity
Tensile elongation H is more than the spring wire length L of spring 1, and the selected material of spring 1 and the structural parameters of the spring 1 for setting meets
It is required that.
Structural parameters according to the spring 1 for obtaining carry out recovery test checking, and experiment shows that this energy-absorbing retracting device is realized
Quality 4kg, hit target speed 20m/s unmanned plane recovery, reclaim maximum overload 10.1g.
Above-described embodiment is preferred embodiment of the present utility model, is not the limit to technical solutions of the utility model
System, as long as the technical scheme that can be realized on the basis of above-described embodiment without creative work, is regarded as falling into
In the rights protection scope of the utility model patent.
Claims (3)
1. a kind of SUAV hits net energy-absorbing retracting device, it is characterised in that：Erected including a soft net, many springs, four
Bar, two first cross bars and two second cross bars, the direction of unmanned plane is reclaimed as front with the energy-absorbing retracting device, described soft
Moved behind part of the net in addition to edge and form bag-shaped, the edge of the soft net forms a square opening, many for being parallel to each other
One end of the spring is uniformly installed on four sides of the square opening of the soft net, and ground is fixed in the lower end of four montants
Face, two two ends of first cross bar for being parallel to each other and being distributed up and down respectively with the upper end of above two montants and under
Section connection, two be parallel to each other and left and right distribution second cross bar two ends respectively with two upper ends of the montant below
First cross bar with top is connected near the position at two ends, and first cross bar and second cross bar are mutually perpendicular to, many
The other end of spring described in root is uniform to be installed on by two first cross bars and the square body of rod that above two montants are formed
On.
2. SUAV according to claim 1 hits net energy-absorbing retracting device, it is characterised in that：Four montants,
Two first cross bars and two second cross bars are steel pipe.
3. SUAV according to claim 2 hits net energy-absorbing retracting device, it is characterised in that：The height of the montant
For 5m, a diameter of 40mm, wall thickness are 4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621332055.3U CN206231634U (en) | 2016-12-06 | 2016-12-06 | A kind of SUAV hits net energy-absorbing retracting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621332055.3U CN206231634U (en) | 2016-12-06 | 2016-12-06 | A kind of SUAV hits net energy-absorbing retracting device |
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| Publication Number | Publication Date |
|---|---|
| CN206231634U true CN206231634U (en) | 2017-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621332055.3U Expired - Fee Related CN206231634U (en) | 2016-12-06 | 2016-12-06 | A kind of SUAV hits net energy-absorbing retracting device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106494631A (en) * | 2016-12-06 | 2017-03-15 | 中国工程物理研究院总体工程研究所 | A kind of SUAV hits net energy-absorbing retracting device and its method for designing |
-
2016
- 2016-12-06 CN CN201621332055.3U patent/CN206231634U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106494631A (en) * | 2016-12-06 | 2017-03-15 | 中国工程物理研究院总体工程研究所 | A kind of SUAV hits net energy-absorbing retracting device and its method for designing |
| CN106494631B (en) * | 2016-12-06 | 2019-05-14 | 中国工程物理研究院总体工程研究所 | A kind of small drone hits the design method of net energy-absorbing recyclable device |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170609 Termination date: 20191206 |
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| CF01 | Termination of patent right due to non-payment of annual fee |