CN108692906A - A kind of inertial load experiment collision cohesion device - Google Patents
A kind of inertial load experiment collision cohesion device Download PDFInfo
- Publication number
- CN108692906A CN108692906A CN201810776359.6A CN201810776359A CN108692906A CN 108692906 A CN108692906 A CN 108692906A CN 201810776359 A CN201810776359 A CN 201810776359A CN 108692906 A CN108692906 A CN 108692906A
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- buckle
- lock
- fixed seat
- face
- testpieces
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- 238000002474 experimental method Methods 0.000 title claims abstract description 18
- 238000012360 testing method Methods 0.000 claims abstract description 13
- 239000007787 solid Substances 0.000 claims abstract description 6
- 238000009434 installation Methods 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 10
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 238000004826 seaming Methods 0.000 abstract description 3
- 238000004088 simulation Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000012857 repacking Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/08—Shock-testing
Abstract
A kind of inertial load experiment collision cohesion device, include with the use of fuselage connector and return lock.When testpieces is to buffer direction high-speed motion and collides, bayonet ramp in fuselage connector is contacted with lock bevel edge is returned, under the action of perpendicular to lock inclined edge surfaces downward force and two buckle middle springs is returned, buckle does circular motion clockwise by axle center of rear end, so that two buckle front end distances is reduced, puts in back in lock.Under the action of recoil of spring power, buckle moment returns to original state and is stuck in go back to lock seaming edge, and " holding " for completing testpieces and buffer acts.It is zero that final testpieces slows down under the action of buffer.During the present invention is tested with Mr. Yu's type inertial load, ensure the connection that the type testpieces can be solid and reliable with buffer in inertial load simulation test, the direction of motion of Control experiment part avoids testpieces from being rebounded by counter-force when big load impacts buffer and testpieces is caused to damage.
Description
Technical field
It is specifically a kind of to be carried with Mr. Yu's type fuselage inertia the present invention relates to airframe inertial load experimental technique field
The collision cohesion device of lotus experiment.
Background technology
In certain type inertia test, due to making testpieces and buffer in big load impact without reliable and effective device
Contact was both held tightly, and testpieces with buffer after contacting since bounce causes testpieces to be moved towards load opposite direction so that
Testpieces moves uncontrolled and damage test part.To need a kind of device can by certain type and buffer in big load,
Solid and reliable connection is integral under high speed impact, and in view of fuselage testpieces simulates in test practical shape as far as possible
Condition can carry out counterweight to the forward and backward position of testpieces, reach the actual state of complete machine.So, it is desirable that the apparatus structure is simple, weight
It measures small, is easily installed and adjusts.
Application No. is a kind of coupler and draft gear is disclosed in 201120244959.1 innovation and creation, it to be used for rolling stock
Between connection, predominantly obtain larger bearings free misalignment, so enable locomotive smoothly, smoothly through curve circuit.
Due to the use of the limitation of object, the type coupler and draft gear is caused, joint degree of freedom is big, and weight is high, and hitch is up to 1370mm
And it is complicated, manufacturing cost is high, cannot meet inertial load test requirements document.
Application No. is disclosing a kind of eye-splice in 00232707.4 innovation and creation, the connection being chiefly used between rope band, material
Material is mostly plastics or metal foil wall pieces, and bearing capacity is weak, small, and shape is mostly rectangle, is not easy to the installation and adjustment in later stage.Institute
With the limitation of the structural strength and use scope of eye-splice can not meet inertial load test requirements document.
Invention content
For overcome it is existing in the prior art it is complicated, manufacturing cost is high, and cannot meet inertial load experiment want
The deficiency asked, the present invention propose a kind of inertial load experiment collision cohesion device.
The present invention includes the fuselage connector being used cooperatively and time lock.The fuselage connector includes closed plate, buckles admittedly
Reservation, spring and buckle, wherein closed plate is located in the endoporus of described buckle fixed seat one end, one end difference of two buckles
In the cross bath of the buckle fixed seat the other end face, and make the positional symmetry of this two buckles;Two spring peaces
Be placed between described two buckles, held out against this two buckles by two springs, make it is each buckle with buckle fixed seat ten
Font groove inner surface is adjacent to.Symmetrically there are two adjusting screws for installation on the excircle of the buckle fixed seat, and respectively adjust
The central axis of screw is saved in the center line of the buckle fixed seat.
The endoporus of described time lock is divided into guide section, changeover portion and returns lock cooperation section;Wherein, it is located at this time lock and fuselage
Connector coordinates the inner surface of the guide section of one end to be the containing conical surface, the taper of the conical surface and the fixture block outer end on the bayonet
The taper in face is identical;The internal diameter of the described time lock other end is maximum, to return lock cooperation section, the internal diameter and described two of this time lock cooperation section
The spacing between each fixture block protrusion surface after a bayonet assembly is identical.The changeover portion is isometrical section, is located at guide section
Between time lock cooperation section;Changeover portion from return lock cooperation the internal diameter of section it is different, formation step difference, the end face of the step difference with it is described
Positioning surface cooperation on bayonet.At described time, the external peripheral surface of lock cooperation section end face has the flange of joint test part.
One end of the buckle fixed seat is connect with fuselage, and the geometric center straight slot cruciferous of the other end face should
After the length of straight slot vertical direction must meet two buckles in the straight slot, the outer end face of the fixture block on this two buckle tops
Height respectively than described time lock isometrical section internal diameter it is big 2.5mm;The length of the straight slot horizontal direction should meet described in installation
Each buckle.In the symmetrical mounting hole there are two adjusting screw of circumferential surface of the buckle fixed seat, and make the adjusting spiral shell
Nail mounting hole is located at the both ends of the straight slot vertical direction.
The outer diameter of the closed plate is identical as the buckle fixed seat fuselage connecting pin internal diameter, and gap between the two is made to match
It closes.It is evenly equipped with the connecting hole for connecting fuselage tooling on the surface of the closed plate.
There are two the buckles, is made of respectively blend stop and time lock connecting plate, and between the blend stop and time lock connecting plate
It is mutually perpendicular to, keeps the shape of buckle in T shape.There is the card for protruding this go back to lock connecting plate outer surface in the end that connecting plate is locked in this time
Block;The fixture block and the step difference returned between lock connecting plate outer surface are formed by the positioning surface that inner face is the buckle;The card
The outer end face of block is inclined-plane.Connecting plate inner surface is locked at each time, and there are two spring installing blinds.
When assembly, the blend stop is located in the endoporus of buckle fixed seat, returns lock connecting plate and is located in cross straight slot, Hui Suo
The fixture block of connecting plate outer end is located at except buckle fixed seat.
During the present invention is tested with Mr. Yu's type inertial load, ensure type testpieces energy in inertial load simulation test
Enough and solid and reliable buffer connections, the direction of motion of Control experiment part avoid testpieces from impacting buffer in big load
When rebounded by counter-force testpieces caused to damage.
When testpieces drives preceding part to buffer direction high-speed motion and with rear local collision, bayonet ramp is locked with returning
Bevel edge contacts, and the closed plate axial position that buckle rear end part is fixed on buffer end face limits, perpendicular to time lock bevel edge
Towards under the action of exerting oneself and two buckle middle springs effect under, and buckle front end recoil of spring power be less than rear end spring
Screen resilience, buckle does circular motion clockwise as axle center using rear end and two buckle front end distances reduce, and puts in back in lock.
Under the action of recoil of spring power, buckle moment returns to original state, and buckle is stuck in go back to lock seaming edge, that is, completes testpieces and buffer
" holding " action.It is zero that final testpieces slows down under the action of buffer.After completing a collision and holding the period tightly, adjust
Adjusting screw is pressed downward front is buckled, and bevel edge bottom is locked until buckle topmost edge is less than back, then in the effect of external force
Under, buckle exits back lock.
The present invention by collide cohesion device by inertia test fuselage testpieces and the simple and reliable connection of buffer
Together, it is convenient for the later stage to install and adjust.The part used in the present invention is mostly revolving parts, convenient processing and manufacture.At certain
In the inertia test of kind of type, problem is collided and held tightly to effective solution between testpieces and buffer, avoids testpieces,
Being rebounded by counter-force when big load impacts buffer causes testpieces to damage, and improves the safety of experiment, is tried in airplane inertial
Work is offered reference and referred to for problems in testing, assists smoothly completing for aircraft inertial load experiment.
Description of the drawings
Fig. 1 is the schematic three dimensional views of different angle of the present invention, wherein Fig. 1 a are that the right side regards schematic three dimensional views, and Fig. 1 b are left views
Schematic three dimensional views;
Fig. 2 is the structural schematic diagram of the present invention;
Fig. 3 is back lock construction schematic diagram, wherein Fig. 3 a are front views, and Fig. 3 b are the A-A direction views in Fig. 3 a;
Fig. 4 is buckle structure schematic diagram, wherein Fig. 4 a are front views, and Fig. 4 b are the vertical views of Fig. 4 a;
Fig. 5 is buckle fixed seat schematic diagram, wherein Fig. 5 a are front views, and Fig. 5 b are the B-B direction views in Fig. 5 a;
Fig. 6 is closed plate schematic diagram, wherein Fig. 6 a are front views, and Fig. 6 b are the C-C direction views in Fig. 6 a.
In figure:1. time lock;2. buckle;3. spring;4. adjusting screw;5. buckling fixed seat;6. closed plate.
Specific implementation mode
The present embodiment is a kind of inertial load experiment collision cohesion device, including fuselage connector and returns lock, therein time
Lock is used cooperatively with fuselage connector.
The fuselage connector includes closed plate 6, buckle fixed seat 5, spring 3 and buckle 2, wherein closed plate 6 is located at institute
In the endoporus for stating 5 one end of buckle fixed seat, one end of two buckles 2 is separately mounted to the ten of the buckle fixed seat the other end face
In font groove, and make the positional symmetry of this two buckles;Two springs 3 are placed between described two buckles, pass through two bullets
Spring 3 holds out against this two buckles, and cross bath inner surface of each buckle with buckle fixed seat is made to be adjacent to.It is fixed in the buckle
Symmetrically there are two adjusting screws 4 for installation on the excircle of seat 5, and the central axis of each adjusting screw is solid in the buckle
The center line of reservation.
Described time lock 1 is hollow revolving body.The endoporus of this time lock is divided into guide section, changeover portion and returns lock cooperation section;
Wherein, the inner surface of the guide section of one end is coordinated to be the containing conical surface, the taper of the conical surface positioned at this time lock and fuselage connector
It is identical as the taper of fixture block outer end face on the bayonet 2;The internal diameter of the described time lock other end is maximum, should to return lock cooperation section
The spacing returned between the internal diameter of lock cooperation section and each fixture block protrusion surface after the assembly of described two bayonets is identical.The mistake
It is isometrical section to cross section, is located at guide section and returns between lock cooperation section;Changeover portion is different from the lock cooperation internal diameter of section is returned, and forms ladder
Difference, the end face of the step difference coordinate with the positioning surface on the bayonet 2.At described time, the external peripheral surface of lock cooperation section end face has
The flange of joint test part.
The buckle fixed seat 5 is hollow revolving body.One end of the buckle fixed seat is connect with fuselage, the other end face
The length of geometric center straight slot cruciferous, the straight slot vertical direction must meet two buckles after the straight slot is interior, should
Internal diameter of the height of the outer end face of the fixture block on two buckle tops respectively than described time 1 isometrical section of lock is big 2.5mm.The straight slot water
Square to length should meet installation each buckle.It is described buckle fixed seat 5 circumferential surface it is symmetrical there are two adjust
The mounting hole of screw 4 is saved, and the adjusting screw mounting hole is made to be located at the both ends of the straight slot vertical direction.
The closed plate 6 is circular slab, the outer diameter of the closed plate and 5 fuselage connecting pin internal diameter phase of the buckle fixed seat
Together, and make clearance fit between the two.It is evenly equipped with the connecting hole for connecting fuselage tooling on the surface of the closed plate.
There are two the buckles 2, is made of respectively blend stop and time lock connecting plate, and between the blend stop and time lock connecting plate
It is mutually perpendicular to, keeps the shape of buckle in T shape.The cross section of the blend stop is circle.Have in the end of this time lock connecting plate convex
Go out the fixture block of this time lock connecting plate outer surface;The fixture block and the step difference returned between lock connecting plate outer surface are formed by inner face
For the positioning surface of the buckle;The outer end face of the fixture block is inclined-plane.Connecting plate inner surface is locked at each time, and there are two springs to install
Blind hole.When assembly, the blend stop is located in the endoporus of buckle fixed seat 5, returns lock connecting plate and is located in cross straight slot, Hui Suolian
The fixture block of fishplate bar outer end is located at except buckle fixed seat.
In the present embodiment, buckle, buckle fixed seat and time lock material selection 30CrMnSiA, Rockwell hardness reach 28~32.
Buckle should use overall processing, to ensure part strength.Closed plate material selection is general 45 steel, and closed plate was originally and buckle is solid
Reservation is an entirety, plays limitation buckle and is axially moved.In the actual production process, craftsmanship difference is unfavorable for fabricating,
Closed plate and buckle fixed seat are separated thus, or the mounting table set in repacking reserves a boss in advance, plays closing
The effect of plate and the form of closed plate can be single parts, or become an entirety, closed plate and buckle with the installation space of a whole page
Contact surface roughness answers≤1.6, ensures that buckle is accessible and moves in a circle, so by the technique of closed plate and fixed seat point
From improving the processing technology of fixed seat, reduce manufacturing cost.During assembly, first one should be buckled from buckle
Fixed seat, is put into intermediate cross recess, is then pushed up, and then installs another buckle.Two springs are installed to bayonet again
The larger spring of elastic force, should be attached to buckle rear end by centre position, and the smaller spring of elastic force is installed to buckle front end, spring installation
After should be at compressive state, make its not under the effect of external force can independently will buckle jack up, to complete " to hold tightly " action.
It also should ensure that the concentricity of preceding part and rear part when installation, in order to avoid influence the practical effect of the device.
When work, part is to buffer direction high-speed motion before being driven by testpieces, and rear local collision, in this process
Middle bayonet ramp is contacted with lock bevel edge is returned, and the closed plate axial position that buckle rear end part is fixed on buffer end face limits,
Under the action of perpendicular to lock inclined edge surfaces downward force is returned and under two buckle middle springs effects, and buckle front end spring returns
Elastic force is less than rear end recoil of spring power, and buckle does circular motion clockwise and two buckle front end distance contractings by axle center of rear end
It is small, it puts in back in lock.Under the action of recoil of spring power, buckle moment returns to original state, and buckle is stuck in go back to lock seaming edge, i.e., complete
It is acted at " holding " of testpieces and buffer.It is zero that final testpieces slows down under the action of buffer.It is touched completing one
It hits after holding the period tightly, adjusts adjusting screw and be pressed downward front is buckled, lock bevel edge bottom until buckle topmost edge is less than back,
Then under the effect of external force, buckle exits back lock.Described time lock 1 is sleeve-shaped, and one end is the connection of the energy absorbing buffer
End, the connecting pin are opening, and the external peripheral surface in the connecting pin has connecting flange;The cooperation of the other end and fuselage connector
There is through-hole at end, the center of the abutting end end face, which is made of cone section and isometrical section;The cone angle and the card of the cone section
The cone angle for detaining 2 inclined-planes is identical, and isometrical section of the internal diameter is smaller 5mm than the maximum appearance and size of described two buckles 2;The cooperation
The inner face at end forms the seam allowance of each buckle.When work, under the effect of the pressure, the beveled end of described two buckles is worn
The through-hole for returning 1 abutting end of lock is crossed, into this time lock, and is stuck on the seam allowance.
Claims (6)
1. a kind of inertial load experiment collision cohesion device, which is characterized in that include with the use of fuselage connector and return lock;
The fuselage connector includes closed plate, buckle fixed seat, spring and buckle, wherein closed plate is located at the buckle fixed seat
In the endoporus of one end, one end of two buckles is separately mounted in the cross bath of the buckle fixed seat the other end face, and is made
The positional symmetry of this two buckles;Two springs are placed between described two buckles, are buckled this two by two springs
It holds out against, cross bath inner surface of each buckle with buckle fixed seat is made to be adjacent to;It is right on the excircle of the buckle fixed seat
There are two adjusting screws for the installation of title, and the central axis of each adjusting screw is in the center line of the buckle fixed seat.
2. inertial load experiment collision cohesion device as described in claim 1, which is characterized in that the endoporus of described time lock divides successively
For guide section, changeover portion and return lock cooperation section;Wherein, coordinate the interior table of the guide section of one end with fuselage connector positioned at this time lock
Face is the containing conical surface, and the taper of the conical surface is identical as the taper of fixture block outer end face on the bayonet;The described time lock other end
Internal diameter it is maximum, to return lock cooperation section, the internal diameter and each fixture block after the assembly of described two bayonets of this time lock cooperation section are convex
The spacing gone out between surface is identical;The changeover portion is isometrical section, is located at guide section and returns between lock cooperation section;Changeover portion with return
The internal diameter of lock cooperation section is different, forms step difference, and the end face of the step difference coordinates with the positioning surface on the bayonet;At described time
The external peripheral surface of lock cooperation section end face has the flange of joint test part.
3. inertial load experiment collision cohesion device as described in claim 1, which is characterized in that one end of the buckle fixed seat
It is connect with fuselage, the geometric center straight slot cruciferous of the other end face, the length of the straight slot vertical direction must meet two
After buckle is mounted in the straight slot, the height of the outer end face of the fixture block on this two buckle tops locks isometrical section than described time respectively
The big 2.5mm of internal diameter;The length of the straight slot horizontal direction should meet installation each buckle;In the circumference of the buckle fixed seat
Surface is symmetrical, and there are two the mounting holes of adjusting screw, and the adjusting screw mounting hole is made to be located at straight slot side vertically
To both ends.
4. inertial load experiment collision cohesion device as described in claim 1, which is characterized in that the outer diameter of the closed plate and institute
It is identical to state buckle fixed seat fuselage connecting pin internal diameter, and makes clearance fit between the two;It is uniformly distributed useful on the surface of the closed plate
In the connecting hole of connection fuselage tooling.
5. inertial load experiment collision cohesion device as described in claim 1, which is characterized in that there are two the buckles, respectively
It is made of blend stop and time lock connecting plate, and is mutually perpendicular between the blend stop and time lock connecting plate, it is in T words to make the shape of buckle
Shape;There is the fixture block for protruding this go back to lock connecting plate outer surface in the end that connecting plate is locked in this time;The fixture block and time lock connecting plate appearance
Step difference between face is formed by the positioning surface that inner face is the buckle;The outer end face of the fixture block is inclined-plane;It is locked at each time
There are two spring installing blinds for connecting plate inner surface.
6. inertial load experiment collision cohesion device as claimed in claim 5, which is characterized in that when assembly, the blend stop is located at
In the endoporus of buckle fixed seat, returns lock connecting plate and be located in cross straight slot, the fixture block for going back to lock connecting plate outer end is solid positioned at buckle
Except reservation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810776359.6A CN108692906B (en) | 2018-07-16 | 2018-07-16 | Collision enclasping device for inertial load test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810776359.6A CN108692906B (en) | 2018-07-16 | 2018-07-16 | Collision enclasping device for inertial load test |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108692906A true CN108692906A (en) | 2018-10-23 |
| CN108692906B CN108692906B (en) | 2024-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810776359.6A Active CN108692906B (en) | 2018-07-16 | 2018-07-16 | Collision enclasping device for inertial load test |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006341820A (en) * | 2005-06-10 | 2006-12-21 | Mitsubishi Fuso Truck & Bus Corp | Impact absorption member |
| JP2007301097A (en) * | 2006-05-10 | 2007-11-22 | Ykk Corp | Impact buffering fastener |
| CN104670185A (en) * | 2015-03-19 | 2015-06-03 | 于新堂 | Recoiling type anti-collision buffer device and vehicle |
| CN205404068U (en) * | 2016-02-26 | 2016-07-27 | 浙江理工大学 | Impact fatigue testing machine is with anchor clamps of full degree of freedom restraint |
| CN207379702U (en) * | 2017-11-20 | 2018-05-18 | 中国工程物理研究院电子工程研究所 | A kind of carrier, simulated collision test device and simulated collision test system |
| CN208621282U (en) * | 2018-07-16 | 2019-03-19 | 西安航空制动科技有限公司 | A kind of impact test cohesion device |
-
2018
- 2018-07-16 CN CN201810776359.6A patent/CN108692906B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006341820A (en) * | 2005-06-10 | 2006-12-21 | Mitsubishi Fuso Truck & Bus Corp | Impact absorption member |
| JP2007301097A (en) * | 2006-05-10 | 2007-11-22 | Ykk Corp | Impact buffering fastener |
| CN104670185A (en) * | 2015-03-19 | 2015-06-03 | 于新堂 | Recoiling type anti-collision buffer device and vehicle |
| CN205404068U (en) * | 2016-02-26 | 2016-07-27 | 浙江理工大学 | Impact fatigue testing machine is with anchor clamps of full degree of freedom restraint |
| CN207379702U (en) * | 2017-11-20 | 2018-05-18 | 中国工程物理研究院电子工程研究所 | A kind of carrier, simulated collision test device and simulated collision test system |
| CN208621282U (en) * | 2018-07-16 | 2019-03-19 | 西安航空制动科技有限公司 | A kind of impact test cohesion device |
Non-Patent Citations (2)
| Title |
|---|
| 刘黎;廖良全;: "吸能拉杆动态拉伸冲击试验技术研究", 直升机技术, no. 04 * |
| 王鑫涛;杜星;: "飞机结构强度试验应急载荷限定系统", 航空学报, no. 02 * |
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|---|---|
| CN108692906B (en) | 2024-02-09 |
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