CN106122363A - A kind of brake buffer unit of sun wing plate air supporting erecting by overhang - Google Patents
A kind of brake buffer unit of sun wing plate air supporting erecting by overhang Download PDFInfo
- Publication number
- CN106122363A CN106122363A CN201610665257.8A CN201610665257A CN106122363A CN 106122363 A CN106122363 A CN 106122363A CN 201610665257 A CN201610665257 A CN 201610665257A CN 106122363 A CN106122363 A CN 106122363A
- Authority
- CN
- China
- Prior art keywords
- cylinder
- overhang
- erecting
- electric magnet
- bounce cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/022—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using dampers and springs in combination
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/023—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/08—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with rubber springs ; with springs made of rubber and metal
Abstract
The invention discloses the brake buffer unit of a kind of sun wing plate air supporting erecting by overhang, seat, electric magnet, cushion pad and buffer spring is fixed including bounce cylinder, cylinder, bounce cylinder is fixed on cylinder and fixes on seat, cushion pad and buffer spring also it is set with on the piston rod of bounce cylinder, bounce cylinder is provided with air inlet away from one end of electric magnet, air inlet connects admission line, choke valve it is provided with on admission line, admission line is provided with an outlet pipe, and outlet pipe is provided with one-way pressure regulating valve；The inner wall of cylinder of brake cylinder is made up of poromerics.The energy that the present invention produces because of inertia when can effectively absorb suspension arrangement brake, prevents suspension arrangement from because of inertia motion, sun wing plate is produced impact；The air cavity that bounce cylinder realizes piston both sides when piston movement by the poromerics of bounce cylinder inner wall of cylinder is connected, prevents piston directly resilience under the action of the spring, it is to avoid too fast carrying out shifts, so that buffering effect is better gas.
Description
Technical field
The present invention relates to solar wing ground simulation erecting by overhang technical field, with specifically, particularly relate to a kind of sun
The brake buffer unit of wing plate air supporting erecting by overhang.
Background technology
Solar wing is the energy source of satellite.I.e. solar energy sailboard, is a kind of collection solar device, is commonly used to
Satellite, spacecraft energy supply it can also be used to be arranged on eco-friendly car top.Solar wing is the energy source of satellite.Satellite
During transmitting, solar wing is in folded state, and the satellite and the rocket are opened and continuous adjustment direction during satellite flight after separating, and make the sun
The battery alignment sun, provides energy for the work of whole star.Solar wing monitors that camera can shoot solar wing spreading process and work shape
State, it is judged that solar wing state is the most normal；Under rail control coordinates, also can shoot the earth and lunar map picture.For making the ground of acquisition
The moon, image was preferable, and this camera have employed a telephoto lens.Solar energy sailboard has power supply and charging two big functions, is equivalent to one
Compact Power Plant.Solar energy sailboard and solar sail are not same things, and solar energy sailboard is a kind of dress collecting solar energy
Put, and solar sail is to utilize the optical pressure of sunlight to carry out cosmonautic a kind of spacecraft.
Sun wing plate is to carry out installing with weightless environment in space, therefore, carries out various simulation on ground and launches
During experiment, we must hang, and in the environment of ground, does not carry out hanging sun wing plate and just cannot run normally
And work；The bindiny mechanisms such as sun wing plate and hinge all design according under weightlessness, if the problem not solving gravity
Solar wing just cannot be operated on ground, so we must be hung up when testing on earth, and ensures
Solar wing is in standard attitude and carries out barycenter hanging, thus offsets the impact of gravity, and the weightlessness of simulation space carries out one
The action of a little row.
Although space being weightless environment, but inertia remaining existence, although solar wing is not subject in space
Gravity affects, but receives when it launches and still can be kept motion by the effect of inertia, and its inertial impulse is by its hinge
Or other bindiny mechanisms offset.Hanging at ground simulation sun wing plate launches, in experiment, generally to use erecting by overhang
Sun wing plate is hung, the when of erecting by overhang motion, drives the movement of sun wing plate, when erecting by overhang is in brake, too
The inertia motion of sun wing plate itself does not has any problem, if but sun wing plate is carried out inertia fortune by erecting by overhang dragging
Dynamic, the most substantially it is in abnormal attitude, this inertia motion needs to overcome, it is therefore desirable to use stopping means to hanging dress
Put carry out spacing.The inertia motion of sun wing plate itself is not required to interfere, but the inertia motion of erecting by overhang is necessary
Interfere, prevent erecting by overhang from dragging sun wing plate in stop position transition reach and move or because the resilience of erecting by overhang will too
Sun wing plate is toward situation about pulling back.During in order to solve erecting by overhang brake, position is forward or the problem of resilience, again because cannot be complete
Complete solution is determined the preshoot of erecting by overhang itself or resilience motion problems, and we are made that and a kind of reduce this preshoot or resilience campaign
Device, is fallen the energy absorption that erecting by overhang produces because of inertia motion by brake buffer unit, it is to avoid use block directly to keep off
The impact several times problem occurred when living sun wing plate.
Summary of the invention
It is an object of the invention to solve sun wing plate and can cause the inertia of itself along with the preshoot of erecting by overhang or resilience
Move affected problem, it is provided that utilize the brake buffer unit of a kind of sun wing plate air supporting erecting by overhang, by special
The energy of bounce cylinder absorption erecting by overhang, thus being used to sun wing plate itself of inertia motion when avoiding erecting by overhang to brake
Property motion impact.
The present invention is achieved through the following technical solutions above-mentioned purpose: the brake of a kind of sun wing plate air supporting erecting by overhang is delayed
Flushing device, for delaying being erected on rectilinear orbit and can carry out brake along the erecting by overhang that rectilinear orbit moves along a straight line
Punching, erecting by overhang is provided with absorption iron block, fixes seat, electric magnet, cushion pad and buffer spring including bounce cylinder, cylinder,
Described bounce cylinder is fixed on cylinder and fixes on seat, and cylinder is fixed seat and is fixed on rectilinear orbit, the piston rod of bounce cylinder
End is fixed with electric magnet, and the piston rod of bounce cylinder is also set with cushion pad and buffer spring, the position of described electric magnet
Corresponding with the position of described absorption iron block, when erecting by overhang moves to normal danger, electric magnet contacts with absorption iron block；Institute
Stating bounce cylinder and one end of electric magnet is provided with air inlet, described air inlet connects admission line, on described admission line
Being provided with choke valve, described admission line is additionally provided with an outlet pipe, described outlet pipe is provided with one-way pressure regulating valve；Institute
The inner wall of cylinder stating bounce cylinder is made up of poromerics, and in described inner wall of cylinder, the micropore of poromerics is distributed as middle close two
End is dredged.
Further, described buffer spring is sleeved on the piston rod between described cushion pad and electric magnet.
Further, in described inner wall of cylinder micro-pore diameter in the middle part of poromerics more than the micro-pore diameter at two ends.
The technology design of the present invention is: utilize bounce cylinder, cushion pad and buffer spring to buffer erecting by overhang,
The power produced when buffer spring is for offsetting erecting by overhang brake, the position produced when bounce cylinder is for offsetting erecting by overhang brake
Move, because bounce cylinder and buffering spring attachment locations belong to be rigidly connected, so being provided with cushion pad in its junction, a side
Face strengthens the buffering effect of this device, buffer spring or buffering when on the other hand preventing bounce cylinder from directly contacting with buffer spring
Cylinder is impaired by excessive pressure；In an initial condition, cushion pad, bounce cylinder are in non-telescoping state, bounce cylinder
Piston be located close to one end of electric magnet, now open the switch valve of gas tank, to cushion gas in-cylinder fuel supply, because admission line
It is provided with pressure regulator valve, although can pass in and out gas but be into and out the speed of gas is all to compare slowly, and reaches certain journey at pressure
Before degree, the pressure check valve on outlet pipe will not be opened；Electric magnet is in normal open state, when erecting by overhang moves to stop
During truck position, the absorption iron block on erecting by overhang is adsorbed by electric magnet, and erecting by overhang is to buffer spring and bounce cylinder
Piston rod is compressed, and buffer spring gradually tapers up, and the piston rod of simultaneous buffering cylinder is because of unexpected stress, the position meeting of piston
Move to the direction away from electric magnet, the air cavity change in volume of the piston rod both sides of bounce cylinder, cause the air cavity of piston both sides
Interior pressure change, now bounce cylinder is compressed away from the air cavity of electric magnet side, the pressure check valve on outlet pipe
It is in out gaseity；Owing to the inner wall of cylinder of bounce cylinder is made up of poromerics, occur at bounce cylinder piston both sides air cavity
During pressure change, gas will necessarily enter in the side air cavity that air pressure religion is low by the micropore in inner wall of cylinder, thus ensures slow
The balance of qi of chong channel ascending adversely cylinder internal gas pressure, but the air permeable effect of poromerics is relatively slow, so in the air cavity of bounce cylinder inner carrier both sides
Gas realizes pressure balance slowly by poromerics, it is to avoid abrupt pressure change, thus ensures that piston can be carried out slowly
It is mobile, and piston will not the most back move, and may eventually reach poised state, so piston can be after the moving back and forth of little scope
Reach poised state, it is achieved the buffering of erecting by overhang.
The beneficial effects of the present invention is: present configuration is the compactest, production cost is low, can effectively absorb suspension dress
The energy produced because of inertia when putting brake, prevents suspension arrangement from because of inertia motion, sun wing plate is produced impact；Use buffering
Suspension arrangement is buffered by pad, bounce cylinder, spring triple buffer device, and buffering effect is good, and is adsorbed by electric magnet
The absorption iron block being firmly fixed on suspension arrangement, so that suspension arrangement is by moving back and forth the energy absorbing suspension arrangement
Amount, buffering is rapidly；Bounce cylinder is realized living by the poromerics of bounce cylinder inner wall of cylinder by the present invention when piston movement
The air cavity connection of plug both sides, thus prevent piston directly resilience under the action of the spring, it is to avoid too fast carrying out shifts gas,
So that buffering effect is better.
Accompanying drawing explanation
Fig. 1 is the original state schematic diagram of the brake buffer unit of the present invention a kind of sun wing plate air supporting erecting by overhang.
Fig. 2 is the working state schematic representation of the brake buffer unit of the present invention a kind of sun wing plate air supporting erecting by overhang.
In figure, 1-bounce cylinder, 2-electric magnet, 3-cushion pad, 4-buffer spring, 5-admission line, 6-choke valve, 7-go out
Feed channel, 8-one-way pressure valve.
Detailed description of the invention
The invention will be further described below in conjunction with the accompanying drawings:
As shown in Fig. 1～2, the brake buffer unit of a kind of sun wing plate air supporting erecting by overhang, for being erected at straight line
On track and can along the erecting by overhang that rectilinear orbit carries out moving along a straight line carry out brake buffering, erecting by overhang is provided with absorption
Iron block, fixes seat, electric magnet 2, cushion pad 3 and buffer spring 4 including bounce cylinder 1, cylinder, and described bounce cylinder 1 is fixed on
Cylinder is fixed on seat, and cylinder is fixed seat and is fixed on rectilinear orbit, and the end of the piston rod of bounce cylinder 1 is fixed with electric magnet 2,
Cushion pad 3 and buffer spring 4, the position of described electric magnet 2 and described absorption iron block also it is set with on the piston rod of bounce cylinder 1
Position corresponding, when erecting by overhang moves to normal danger electric magnet 2 with absorption iron block contact；Described bounce cylinder 1 is remote
Be provided with air inlet from one end of electric magnet 2, described air inlet connects admission line 5, and described admission line 5 is provided with throttling
Valve 6, described admission line 5 is additionally provided with an outlet pipe 7, and described outlet pipe 7 is provided with one-way pressure regulating valve 8；Described slow
The inner wall of cylinder of qi of chong channel ascending adversely cylinder is made up of poromerics.Described buffer spring 4 is sleeved between described cushion pad 3 and electric magnet 2
On piston rod.In described inner wall of cylinder, the micropore of poromerics is distributed as middle close two ends and dredges poromerics in described inner wall of cylinder
The micro-pore diameter at middle part is more than the micro-pore diameter at two ends.
Above-described embodiment is presently preferred embodiments of the present invention, is not the restriction to technical solution of the present invention, as long as
The technical scheme that can realize on the basis of above-described embodiment without creative work, is regarded as falling into patent of the present invention
Rights protection in the range of.
Claims (3)
1. the brake buffer unit of a sun wing plate air supporting erecting by overhang, it is characterised in that: for being erected at rectilinear orbit
Go up and brake buffering can be carried out along the erecting by overhang that rectilinear orbit carries out moving along a straight line, erecting by overhang is provided with absorption ferrum
Block, fixes seat, electric magnet (2), cushion pad (3) and buffer spring (4), described bounce cylinder including bounce cylinder (1), cylinder
(1) being fixed on cylinder and fix on seat, cylinder is fixed seat and is fixed on rectilinear orbit, and the end of the piston rod of bounce cylinder (1) is solid
Surely there is electric magnet (2), the piston rod of bounce cylinder (1) is also set with cushion pad (3) and buffer spring (4), described electric magnet
(2) position is corresponding with the position of described absorption iron block, and erecting by overhang moves to electric magnet (2) and absorption ferrum during normal danger
Block contacts；Described bounce cylinder (1) is provided with air inlet away from one end of electric magnet (2), and described air inlet connects air inlet pipe
Road (5), described admission line (5) is provided with choke valve (6), described admission line (5) is additionally provided with an outlet pipe
(7), described outlet pipe (7) is provided with one-way pressure regulating valve (8)；The inner wall of cylinder of described bounce cylinder (1) is by poromerics system
Become, in described inner wall of cylinder the micropore of poromerics be distributed as middle close two ends dredge.
The brake buffer unit of a kind of sun wing plate air supporting erecting by overhang the most according to claim 1, it is characterised in that: institute
State buffer spring (4) to be sleeved on the piston rod between described cushion pad (3) and electric magnet (2).
The brake buffer unit of a kind of sun wing plate air supporting erecting by overhang the most according to claim 1, it is characterised in that: institute
State in inner wall of cylinder the micro-pore diameter more than two ends of the micro-pore diameter in the middle part of poromerics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610665257.8A CN106122363B (en) | 2016-08-12 | 2016-08-12 | A kind of brake buffer unit of sun wing plate air supporting erecting by overhang |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610665257.8A CN106122363B (en) | 2016-08-12 | 2016-08-12 | A kind of brake buffer unit of sun wing plate air supporting erecting by overhang |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106122363A true CN106122363A (en) | 2016-11-16 |
| CN106122363B CN106122363B (en) | 2018-01-05 |
Family
ID=57259038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610665257.8A Active CN106122363B (en) | 2016-08-12 | 2016-08-12 | A kind of brake buffer unit of sun wing plate air supporting erecting by overhang |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106122363B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110021243A (en) * | 2019-03-22 | 2019-07-16 | 重庆懿熙品牌策划有限公司 | A kind of latch assembly and its inflatable advertisement cabinet |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63152737A (en) * | 1986-12-16 | 1988-06-25 | Fujitsu Ltd | Carrier brake device |
| CN103047220A (en) * | 2012-12-31 | 2013-04-17 | 浙江工业大学 | Cylinder barrel air supply pressure equalizing air floatation friction-free air cylinder |
| CN103386707A (en) * | 2013-07-29 | 2013-11-13 | 苏州市世好建材新技术工程有限公司 | Full-automatic hydraulic molding machine for producing hollow block |
| CN105438496A (en) * | 2015-12-01 | 2016-03-30 | 裘尧云 | Ejection arresting gear |
| CN206092800U (en) * | 2016-08-12 | 2017-04-12 | 浙江工业大学 | Solar wing board air supporting cable suspension device's brake buffer device |
-
2016
- 2016-08-12 CN CN201610665257.8A patent/CN106122363B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63152737A (en) * | 1986-12-16 | 1988-06-25 | Fujitsu Ltd | Carrier brake device |
| CN103047220A (en) * | 2012-12-31 | 2013-04-17 | 浙江工业大学 | Cylinder barrel air supply pressure equalizing air floatation friction-free air cylinder |
| CN103386707A (en) * | 2013-07-29 | 2013-11-13 | 苏州市世好建材新技术工程有限公司 | Full-automatic hydraulic molding machine for producing hollow block |
| CN105438496A (en) * | 2015-12-01 | 2016-03-30 | 裘尧云 | Ejection arresting gear |
| CN206092800U (en) * | 2016-08-12 | 2017-04-12 | 浙江工业大学 | Solar wing board air supporting cable suspension device's brake buffer device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110021243A (en) * | 2019-03-22 | 2019-07-16 | 重庆懿熙品牌策划有限公司 | A kind of latch assembly and its inflatable advertisement cabinet |
| CN110021243B (en) * | 2019-03-22 | 2020-12-18 | 重庆懿熙品牌策划有限公司 | Lock subassembly and inflatable advertisement case thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106122363B (en) | 2018-01-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101858403B (en) | Six-shaft vibration and shock isolation platform for moving carrier carrying equipment | |
| CN106438824B (en) | A kind of brake cylinder being exclusively used in sun wing plate erecting by overhang | |
| CN206036109U (en) | Cylinder is used to annular circumference breathable type solar wing board cable suspension device brake buffering | |
| CN106151362A (en) | A kind of annular, peripheral ventilation type sun wing plate erecting by overhang brake buffering cylinder | |
| CN206111928U (en) | Device for brake buffering with purpose -built cylinder is to solar wing board cable suspension device | |
| CN106122363A (en) | A kind of brake buffer unit of sun wing plate air supporting erecting by overhang | |
| CN206092800U (en) | Solar wing board air supporting cable suspension device's brake buffer device | |
| CN210793607U (en) | Near space aerostat cluster wireless energy transfer system | |
| CN106122356B (en) | A kind of bounce cylinder for sun wing plate erecting by overhang with multistep buffering effect | |
| CN206036108U (en) | A brake buffer device for solar wing board cable suspension device | |
| CN109720552A (en) | The mapping unmanned plane of balance can be automatically adjusted | |
| CN206036110U (en) | A bounce cylinder for solar wing board cable suspension device has a multistep buffering effect | |
| CN206309847U (en) | A kind of brake cylinder that brake buffering is carried out to sun wing plate erecting by overhang | |
| CN206031815U (en) | Solar wing board cable suspension device's brake buffer device | |
| CN106151361A (en) | Utilize special cylinder that sun wing plate erecting by overhang carries out the device of brake buffering | |
| CN106286690A (en) | A kind of bounce cylinder being exclusively used in sun wing plate erecting by overhang | |
| CN106122354A (en) | A kind of brake cylinder that sun wing plate erecting by overhang is carried out brake buffering | |
| CN106151360A (en) | A kind of sun wing plate erecting by overhang brake gear with brake pooling feature | |
| CN106122355B (en) | A kind of brake bounce cylinder for sun wing plate erecting by overhang | |
| CN106114904B (en) | A kind of brake buffer unit of sun wing plate erecting by overhang | |
| CN211442797U (en) | Unmanned aerial vehicle for power network line inspection | |
| CN106151359A (en) | A kind of brake buffer unit for sun wing plate erecting by overhang | |
| CN106114921A (en) | A kind of utilization hangs the device that sun wing plate erecting by overhang is braked by bead | |
| CN106090101A (en) | A kind of brake buffering cylinder of air-flotation type sun wing plate erecting by overhang | |
| CN106114914B (en) | A kind of flexible hanging device for the hanging of sun wing plate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |