Nyob rau hauv txhua lub tsheb niaj hnub muaj ib tug wiper, nyob rau hauv uas tus tsav ntawm txhuam yog nqa tawm los ntawm ib tug yooj yim mechanism - lub trapezoid.Nyeem tag nrho hais txog wiper trapezoids, lawv cov hom uas twb muaj lawm, tsim thiab lub hauv paus ntsiab lus ntawm kev ua haujlwm, nrog rau kev xaiv kom raug thiab hloov cov khoom siv hauv kab lus no.
Dab tsi yog wiper trapezoid?
Wiper trapezoid yog lub wiper tsav, lub kaw lus ntawm rods thiab levers uas muab reciprocating txav ntawm lub wiper hniav nyob rau hauv lub windshield los yog rear qhov rooj iav ntawm lub tsheb.
Nyob rau hauv tsheb, tsheb npav, tsheb laij teb thiab lwm yam khoom siv, yeej ib txwm muaj ib lub wiper - ib qho kev pab cuam uas ntxuav lub qhov cua los ntawm dej thiab av.Cov tshuab niaj hnub no yog siv hluav taws xob, thiab kev hloov pauv ntawm lub zog ntawm lub tshuab hluav taws xob mus rau cov txhuam hniav yog ua los ntawm kev siv cov pas nrig thiab cov levers tso rau hauv qab iav - lub wiper trapezoid.
Lub wiper trapezoid muaj ntau yam haujlwm:
● Tsav wiper hniav los ntawm lub tshuab hluav taws xob;
● Tsim cov reciprocating motion ntawm txhuam (los yog txhuam) nrog rau qhov xav tau amplitude;
● Nyob rau hauv ob- thiab peb-ntxuav wipers, nws ua kom synchronous txav ntawm cov hniav raws tib yam los yog sib txawv trajectories rau txhua tus hniav.
Nws yog lub wiper trapezoid uas ua kom lub zog ntawm "wipers" ntawm lub khob nrog qhov xav tau amplitude (scope) thiab synchrony, thiab qhov ua haujlwm tsis zoo ntawm chav tsev no ib nrab lossis tag nrho cuam tshuam kev ua haujlwm ntawm tag nrho cov kab ke.Txog kev puas tsuaj, lub trapezoid yuav tsum tau kho lossis hloov pauv hauv lub rooj sib txoos, tab sis ua ntej pib kho, koj yuav tsum nkag siab txog cov hom uas twb muaj lawm ntawm cov txheej txheem no, lawv cov qauv tsim thiab lub hauv paus ntsiab lus ntawm kev ua haujlwm.
Tag nrho cov tsheb, tsheb laij teb thiab ntau lub tshuab yog nruab nrog relay-regulators.Kev ua haujlwm tsis zoo ntawm chav tsev no cuam tshuam kev ua haujlwm ntawm tag nrho cov hluav taws xob, qee qhov no tuaj yeem ua rau tawg ntawm cov khoom siv hluav taws xob thiab hluav taws xob.Yog li ntawd, lub faulty regulator yuav tsum tau hloov sai li sai tau, thiab rau qhov tseeb xaiv ntawm ib feem tshiab, nws yog tsim nyog los nkag siab txog cov uas twb muaj lawm hom, tsim thiab lub hauv paus ntsiab lus ntawm kev ua hauj lwm ntawm regulators.
Hom, tsim thiab lub hauv paus ntsiab lus ntawm kev ua haujlwm ntawm wiper trapezoid
Ua ntej tshaj plaws, tag nrho cov trapezoids tuaj yeem muab faib ua peb hom raws li tus naj npawb ntawm txhuam:
● Rau ib leeg-txheej iav wipers;
● Rau ob lub ntsej muag wipers;
● Rau peb-hniav wipers.
Daim duab ntawm ib tug txhuam wiper
Daim duab ntawm ob lub ntsej muag wiper
Nyob rau tib lub sijhawm, tus tsav ntawm ib qho txhuam tsis tuaj yeem hu ua lub trapezoid, txij li feem ntau nws tsuas yog tsim los ntawm lub tshuab hluav taws xob nrog lub gearbox tsis muaj cov pas nrig ntxiv lossis nrog ib tus pas nrig.Thiab ob- thiab peb-txheej trapezoids muaj cov cuab yeej zoo ib yam thiab sib txawv ntawm cov pas nrig.
Nyob rau hauv lem, ob- thiab peb-txheej trapezoids tuaj yeem muab faib ua ob hom raws li qhov chaw uas lub tshuab hluav taws xob txuas nrog:
● Symmetrical - lub tshuab hluav taws xob nyob rau hauv nruab nrab ntawm lub trapezoid (nruab nrab ntawm cov txhuam hniav), kom ntseeg tau tias kev txav ntawm ob txhuam txhuam ib zaug;
● Asymmetrical (asymmetrical) - lub tshuab hluav taws xob tau muab tso rau hauv qab lub trapezoid, muab nws cov tsav nrog ntxiv rau sab nraud.
Symmetrical wiper trapezoid
Asymmetrical wiper trapezoid
Niaj hnub no, asymmetric trapezoids feem ntau yog, lawv muaj cov cuab yeej yooj yim.Feem ntau, lub hauv paus ntawm tus tsim yog tsim los ntawm ob lub hinged rods, nyob rau hauv lub pob khawm ntawm tus pas nrig thiab nyob rau hauv lub kawg ntawm ib tug ntawm lawv muaj leashes - levers ntawm me me ntev, rigidly txuas nrog rau cov chais ntawm txhuam levers.Tsis tas li ntawd, cov hlua nruab nrab tuaj yeem ntsia tau ncaj qha rau hauv pob khawm ntawm ob lub pas nrig (qhov no, ob lub pas nrig thiab ib txoj hlua khi tawm ntawm ib qho taw tes), los yog txuas cov pas nrig nrog ob lub pob khawm, thiab nqa cov menyuam hauv nruab nrab.Nyob rau hauv ob qho tib si, cov leashes yog perpendicular rau cov pas nrig, uas ua kom lawv deflection thaum lub sij hawm reciprocating txav ntawm cov pas nrig.
Cov chais yog tsim nyob rau hauv daim ntawv ntawm luv luv steel rods, nyob rau sab saum toj ntawm cov threads raug txiav los yog slots yog muab rau ib tug nruj haum ntawm lub wiper hniav levers.Feem ntau, cov chais yog nyob rau hauv cov bearings dawb, uas, nyob rau hauv lem, yog tuav los ntawm brackets nrog lub qhov rau fasteners.Nrog rau qhov dawb kawg ntawm qhov thib ob thrust, lub trapezoid txuas mus rau lub gearbox ntawm lub tshuab hluav taws xob, uas muaj qhov yooj yim tshaj plaws tsim - nyob rau hauv daim ntawv ntawm ib tug crank ncaj qha nyob rau ntawm lub cev muaj zog ncej, los yog mounted rau lub iav ntawm ib tug txo worm iav. .Lub tshuab hluav taws xob thiab lub tshuab hluav taws xob tau sib sau ua ke rau hauv ib chav tsev, nyob rau hauv qhov kev txwv kev hloov pauv tuaj yeem nyob, uas ua kom cov txhuam hniav nres hauv qee txoj haujlwm thaum lub wiper raug tua.
Rods, leashes, rollers thiab brackets ntawm lub mechanism yog tsim los ntawm stamping los ntawm cov ntawv hlau los yog los ntawm dabtsi yog khoov tubular blanks, uas muaj siab dabtsi yog khoov rigidity.Hinges yog tsim los ntawm rivets lossis caps, yas bushings thiab cov kaus mom tiv thaiv tau muab tso rau hauv qhov chaw ntawm pob khawm pob qij txha, ntxiv lubrication kuj tseem yuav muab.Lub pob khawm qhov hauv cov hlua khi feem ntau yog oval kom paub meej qhov tsim nyog ntawm cov txhuam hniav.
Lub wiper tsav ua haujlwm raws li hauv qab no.Thaum lub wiper qhib, lub crank converts cov kev sib hloov ntawm lub cev muaj zog ncej mus rau hauv reciprocating motion ntawm lub trapezoid rods, lawv deviate los ntawm lawv qhov nruab nrab txoj hauj lwm mus rau sab xis thiab sab laug, thiab los ntawm cov leashes yuam cov chais kom tig ntawm ib tug tej yam. lub kaum sab xis - tag nrho cov no ua rau cov yam ntxwv vibrations ntawm levers thiab txhuam nyob rau ntawm lawv.
Ib yam li ntawd, lub trapezoids ntawm peb-txheej wipers yog teem, lawv tsuas yog ntxiv ib tug thib peb pas nrig nrog ib tug leash, kev khiav hauj lwm ntawm xws li ib tug system yog tsis txawv los ntawm ib tug tsuas yog piav qhia.
Symmetrical trapezoids kuj yog ib qho system ntawm ob txoj hlua khi thiab hlua khi, tab sis cov hlua khi yog nyob rau ntawm qhov kawg ntawm cov pas nrig, thiab ib qho hlua khi ntxiv los yog qib tau muab tso rau hauv pob khawm ntawm cov pas nrig txuas mus rau lub gearbox ntawm lub tshuab hluav taws xob.Txhawm rau kom nruj thiab yooj yim installation, lub bracket yuav muab tso rau hauv xws li ib tug trapezoid - ib tug yeeb nkab txuas cov txhuam leashes, nyob rau hauv lub hauv paus ntawm uas yuav muaj ib tug platform rau mounting ib tug hluav taws xob lub cev muaj zog nrog ib tug gearbox.Xws li cov txheej txheem tsis tas yuav tsum tau cais cov hlua khi lossis cov hlua khi, uas ua rau nws yooj yim dua thiab kev ntseeg tau zoo dua piv rau lwm hom trapezoids.
Wiper trapezoids tuaj yeem nyob hauv qab lossis saum toj ntawm lub qhov cua hauv qhov tshwj xeeb niche (compartment) tsim los ntawm lub cev.Cov brackets nrog txhuam txhuam yog mounted rau ntawm lub cev (flush) los ntawm ob los yog peb screws (los yog bolts), thiab cov menyuam ua feem ntau yog kaw nrog roj hmab rings los yog tiv thaiv lub kaus mom / npog.Lub tshuab hluav taws xob nrog lub gearbox yog ntsia ncaj qha rau ntawm lub cev lossis ntawm lub bracket uas tuaj nrog lub trapezoid.Ib yam li ntawd, ib leeg-txheej iav wipers rau lub qhov rooj iav tom qab raug ntsia.
Yuav ua li cas xaiv thiab hloov lub wiper trapezoid
Thaum lub sij hawm ua hauj lwm ntawm lub wiper, qhov chaw ntawm nws trapezoid hnav tawm, deform los yog vau - vim li ntawd, tag nrho cov txheej txheem tsis ua nws txoj haujlwm ib txwm.Kev ua haujlwm tsis zoo ntawm lub trapezoid yog qhia los ntawm qhov nyuaj txav ntawm cov txhuam hniav, lawv lub sijhawm nres thiab desynchronization ntawm kev txav, thiab tag nrho cov no tuaj yeem nrog lub suab nrov.Txhawm rau txheeb xyuas qhov ua haujlwm tsis zoo, nws yog qhov yuav tsum tau kuaj xyuas lub trapezoid, thiab yog tias tsis tuaj yeem tshem tawm, hloov lub tshuab.
Trapezoid peb-hniav wiper
Tsuas yog cov trapezoids uas tau tsim tshwj xeeb rau lub tsheb no yuav tsum tau hloov pauv - qhov no yog tib txoj hauv kev los xyuas kom meej tias lub wiper tuaj yeem ntsia tau ib txwm thiab nws yuav ua haujlwm tau zoo.Qee qhov xwm txheej, nws raug tso cai siv cov analogues, txawm li cas los xij, txawm tias nyob rau hauv cov tsheb ntawm tib cov qauv ntawm ntau xyoo ntawm kev tsim khoom, cov txheej txheem yuav txawv ntawm kev sib txuas thiab tsim ntawm tus kheej qhov chaw (uas cuam tshuam nrog kev hloov pauv hauv lub cev, iav qhov chaw, thiab lwm yam).
Kev hloov lub trapezoid yuav tsum tau ua raws li cov lus qhia rau kev kho lub tsheb.Feem ntau, txhawm rau rhuav tshem tag nrho cov txheej txheem, nws yog qhov txaus kom tshem tawm cov txhuam txhuam, tom qab ntawd tshem tawm cov fasteners ntawm cov menyuam bracket los yog cov khoom siv sib txuas, thiab tshem tawm cov khoom sib dhos trapezoid nrog lub cev muaj zog thiab gearbox.Hauv qee lub tsheb, lub trapezoid thiab lub tshuab hluav taws xob raug tshem tawm nyias, thiab kev nkag mus rau lawv cov fasteners yog nqa tawm los ntawm ntau sab ntawm lub niche nyob rau hauv lub windshield.Lub installation ntawm lub tshuab tshiab yog ua nyob rau hauv qhov kev txiav txim rov qab, thiab tej zaum yuav tsim nyog rau lubricate qee qhov chaw.Thaum ua tiav kev teeb tsa, nws yuav tsum tau saib xyuas qhov chaw raug ntawm cov pas nrig, hlua khi thiab lwm qhov ntawm lub trapezoid, txwv tsis pub kev ua haujlwm ntawm lub tshuab yuav cuam tshuam.Yog tias lub trapezoid tau raug xaiv thiab ntsia kom raug, lub wiper yuav ua haujlwm ruaj khov, tswj kev huv thiab pob tshab ntawm iav hauv txhua qhov xwm txheej.
Post lub sij hawm: Lub Xya hli ntuj-14-2023