A load cellQhov tseeb yog ib qho cuab yeej uas hloov cov teeb liab loj rau hauv qhov ntsuas hluav taws xob tso zis. Thaum siv aload cell, qhov chaw ua haujlwm tiag tiag ntawm lubload cell yuav tsum tau txiav txim siab ua ntej, uas yog qhov tseem ceeb rau kev xaiv kom raugload cell. Nws yog hais txog seb tusload cell tuaj yeem ua haujlwm ib txwm, nws txoj kev nyab xeeb thiab kev pabcuam lub neej, thiab txawm tias muaj kev ntseeg siab thiab kev nyab xeeb ntawm tag nrho cov ntsuas ntsuas.
Qhov cuam tshuam ntawm ib puag ncig ntawm lubload cell Feem ntau suav nrog cov hauv qab no:
(1) Qhov kub thiab txias ib puag ncig ua rau muaj teeb meem xws li melting ntawm cov ntaub ntawv txheej, qhib vuam ntawm cov pob qij txha, thiab cov qauv kev hloov hauv cov kev ntxhov siab sab hauv ntawm elastomer. Rauload cells ua haujlwm nyob rau hauv qhov kub thiab txias ib puag ncig, kub kubload cells feem ntau siv; Ntxiv rau, cov khoom siv xws li rwb thaiv tsev kub, dej txias lossis cua txias yuav tsum tau ntxiv.
(2) Kev cuam tshuam ntawm plua plav thiab av noo ntawm qhov luv luv ntawm lubload cell. Hauv qhov xwm txheej no, aload cell nrog siabhuab cua-nruj yuav tsum xaiv. txawvload cells muaj ntau txoj kev sib khi, thiab lawvhuab cua-nruj txawv heev.
Cov ntsaws ruaj ruaj muaj xws li sealant filling lossis txheej; roj hmab pads yog mechanically fastened thiab kaw; welding (argon arc vuam, plasma beam vuam) thiab nqus nitrogen filling seals.
Los ntawm qhov kev xav ntawm sealing nyhuv, vuam sealing yog qhov zoo tshaj plaws, thiab sau thiab txheej sealant yog qhov tsis zoo. Rauload cells uas ua hauj lwm nyob rau hauv ib tug huv si thiab qhuav nyob rau hauv tsev, koj muaj peev xwm xaiv ib tug kua nplaum-sealedload cell, thiab rau qee yamload cells uas ua hauj lwm nyob rau hauv ib qho chaw ntub thiab plua plav, koj yuav tsum xaiv lub diaphragm tshav kub foob los yog diaphragm vuam foob, siv lub tshuab nqus tsev nitrogen ntim.load cell.
(3) Nyob rau hauv ib qho chaw corrosive heev, xws li ya raws thiab acidity, uas yuav ua rau lub elastomer puas los yog ua rau ib tug luv luv Circuit Court, lub sab nrauv yuav tsum tau oversprayed los yog yuav tsum tau.npog nrogstainless hlau, uas muaj corrosion kuj zoo thiab zoohuab cua nruj.
(4) Kev cuam tshuam ntawm electromagnetic teb rauload cev tso zis teeb liab teeb liab. Hauv qhov no, kev tiv thaiv ntawm lubload cev yuav tsum tau soj ntsuam nruj me ntsis kom pom tias nws muaj qhov zoo electromagnetic tsis kam.
(5) Flammable thiab explosive tsis tsuas yog ua kom puas tag rau lubload cell, tab sis kuj ua rau muaj kev hem thawj rau lwm yam khoom siv thiab kev nyab xeeb ntawm tus kheej. Yog li ntawd,load cells ua hauj lwm nyob rau hauv flammable thiab explosive ib puag ncig muab rau pem hauv ntej ntau dua cov kev cai rau tawg-pov thawj kev ua tau zoo: explosion-proofload cells yuav tsum tau xaiv nyob rau hauv ib puag ncig flammable thiab tawg. Lub sealing npog ntawm noload cell yuav tsum tsis tsuas xav txog nwshuab cua nruj, tab sis kuj Lub zog tawg-pov thawj, nrog rau cov dej tsis muaj dej, noo noo-pov thawj thiab tawg-pov thawj cov khoom ntawm cov hlau lead yuav tsum tau txiav txim siab.
Qhov thib ob, kev xaiv ntawm tus lej thiab ntau yam ntawmload cells.
Kev xaiv ntawm tus naj npawb ntawmload cells yog txiav txim siab raws li lub hom phiaj ntawm lub ntsuas hluav taws xob ntsuas thiab tus naj npawb ntawm cov ntsiab lus uas lub ntsuas lub cev xav tau los txhawb nqa (tus naj npawb ntawm cov ntsiab lus txhawb nqa yuav tsum tau txiav txim siab raws li lub hauv paus ntsiab lus ntawm kev ua lub hauv paus geometric ntawm lub ntiajteb txawj nqus ntawm lub ntsuas lub cev coincide nrog. qhov tseeb qhov chaw ntawm lub ntiajteb txawj nqus). Feem ntau hais lus, ob pebload cells yog siv rau qhov ntsuas lub cev nrog ntau lub ntsiab lus txhawb nqa. Txawm li cas los xij, rau qee lub cev tshwj xeeb xws li ntsuas hluav taws xob sib txuas, tsuas yog ib qho xwbload cell siv tau. Rau ib txhiaelectromagneticly ua ke teev, kev xaiv ntawm covload cell yuav tsum tau txiav txim raws li qhov tseeb. tus lej.
Kev xaiv ntawm covload cell ntau yam tuaj yeem txiav txim siab raws li qhov kev ntsuam xyuas dav dav ntawm yam xws li qhov siab tshaj qhov hnyav ntawm qhov ntsuas, tus naj npawb ntawm kev xaivload cells, tus kheej qhov hnyav ntawm lub cev nplai, qhov ua tau siab tshaj plaws eccentric load thiab dynamic load. Feem ntau, qhov ze ntawm qhov ntau ntawm covload cell yog rau lub load muab rau txhua tusload cell, qhov tseeb dua nws qhov hnyav yuav yog. Txawm li cas los, nyob rau hauv tiag tiag siv, txij li thaum lub load thov mus rau lubload cell suav nrog tus kheej qhov hnyav, hnyav hnyav, eccentric load thiab vibration cuam tshuam ntawm qhov ntsuas ntxiv rau cov khoom yuav tsum tau hnyav, ntau yam yuav tsum tau txiav txim siab thaum xaiv qhovload cell ntau yam kom paub meej tiasload cell kev ruaj ntseg thiab ntev.
Cov mis laij lej ntawm lubload cell Qhov ntau yog txiav txim siab los ntawm ntau qhov kev sim tom qab tag nrho xav txog ntau yam cuam tshuam rau lub cev.
Cov mis yog raws li nram no:
C=K-0K-1K-2K-3(Wmax+W)/N
C—qhov ntsuas ntawm ib leegload cell; W—tus kheej qhov hnyav ntawm lub cev nplai; Wmax—tus nqi siab tshaj plaws ntawm qhov hnyav ntawm qhov khoom raug hnyav; N—tus naj npawb ntawm cov ntsiab lus txhawb nqa siv los ntawm qhov ntsuas lub cev; K-0—qhov kev tuav pov hwm zoo, feem ntau ntawm 1.2 thiab 1.3; K-1—cuam tshuam coefficient; K-2—qhov nruab nrab ntawm lub ntiajteb txawj nqus offset coefficient ntawm scale lub cev; K-3—cua siab coefficient.
Piv txwv li: 30t hluav taws xob tsheb nplai, qhov siab tshaj plaws yog 30t, qhov ntsuas lub cev hnyav yog 1.9t, siv plaubload cells, raws li qhov tseeb ntawm lub sijhawm ntawd, xaiv qhov kev tuav pov hwm K-0 = 1.25, qhov cuam tshuam rau K-1 = 1.18, Qhov nruab nrab ntawm lub ntiajteb txawj nqus offset coefficient K-2—= 1.03, cua siab coefficient K-3 = 1.02, sim txiav txim siab tonnage ntawmload cell.
Kev daws: xam cov mis raws li tusload cell ntau yam:
C=K-0K-1K-2K-3(Wmax+W)/N
Nws paub tias:
C = 1.25×1.18×1.03 ib×1.02 ib×(30+1.9)/4
= 12,36 t
Yog li ntawd, aload cell nrog rau ntau yam ntawm 15t tuaj yeem xaiv tau (lub tonnage ntawmload cell feem ntau tsuas yog 10T, 15T, 20t, 25t, 30t, 40t, 50t, thiab lwm yam, tshwj tsis yog nws tau txiav txim tshwj xeeb).
Raws li kev paub, lubload cell feem ntau yuav tsum ua haujlwm li ntawm 30% mus rau 70% ntawm nws qhov ntau, tab sis rau qee qhov ntsuas qhov hnyav nrog lub zog loj thaum siv, xws li cov nplais tsheb ciav hlau, cov tsheb loj loj, cov nplais hlau, thiab lwm yam, thaum xaivload cells, Feem ntau, nws yog tsim nyog los nthuav nws ntau yam, thiaj li hais tias tusload cell ua hauj lwm nyob rau hauv 20% mus rau 30% ntawm nws ntau yam, thiaj li hais tias qhov hnyav cia ntawm lubload cell yog nce ntxiv kom muaj kev nyab xeeb thiab lub neej ntawm lubload cell.
Ntxiv dua thiab, xav txog kev siv tau ntawm txhua homload cell.
Kev xaiv ntawm covload cell hom feem ntau yog nyob ntawm hom kev hnyav thiab qhov chaw teeb tsa kom ntseeg tau tias kev txhim kho kom zoo thiab muaj kev nyab xeeb thiab txhim khu kev qha; ntawm qhov tod tes, cov neeg tsim khoom cov lus pom zoo yuav tsum tau txiav txim siab. Cov neeg tsim khoom feem ntau qhia meej txog qhov kev thov ntawm covload cell raws li lub zog ntawm lubload cell, Performance indicators, As installation form, structural type, and elastomer material. Piv txwv li, aluminium cantilever beamload cells yog tsim rau cov nqi teev, platform nplai, rooj plaub, thiab lwm yam .; steel cantilever nqajload cells yog tsim rau hopper scale, hluav taws xob siv scale, sorting scale, thiab lwm yam .; steel chojload cells yog tsim rau rail scale, tsheb scale, crane scale, thiab lwm yam .; kemload cells yog tsim rau tsheb scale, dynamic rail scale, thiab loj-tonnage hopper nplai. Tos.
Thaum kawg, muaj kev xaiv ntawmload cell chav kawm raug.
Qhov tseeb ntawm covload cell suav nrog kev ntsuas ntsuas xws li covload cell's nonlinearity, creep, creep rov qab, hysteresis, repeatability, thiab rhiab heev. Thaum xaivload cells, tsis txhob cia siab rau qib siabload cells, tab sis xav txog kev ua kom tau raws li qhov tseeb ntawm cov ntsuas hluav taws xob thiab lawv cov nqi.
Kev xaiv ntawm covload cell chav kawm yuav tsum ua kom tiav ob yam hauv qab no:
1. Ua tau raws li qhov yuav tsum tau muaj ntawm cov cuab yeej tawm tswv yim. Lub ntsuas ntsuas ntsuas ntsuas qhov ntsuas qhov hnyav tom qab ua tiav cov teeb liab tso zis ntawm qhovload cell los ntawm amplification thiab A/D conversion. Yog li ntawd, tso zis teeb liab ntawm lubload cell yuav tsum muaj ntau tshaj los yog sib npaug rau qhov input teeb liab loj yuav tsum tau los ntawm lub 'meter', uas yog, cov zis rhiab heev ntawm covload cell yog hloov los ntawm kev sib piv cov mis ntawm tusload cell thiab tus ' meter ', thiab cov txiaj ntsig ntawm kev suav yuav tsum ntau dua lossis sib npaug ntawm cov tswv yim rhiab heev uas yuav tsum tau ua los ntawm lub 'meter'.
Qhov sib txuam formula ntawmload cell thiab 'meter':
Load cev tso zis rhiab heev * excitation fais fab mov voltage * siab tshaj plaws luj ntawm lub teev
Tus naj npawb ntawm kev faib cov nplai * tus naj npawb ntawmload cells * qhov ntau ntawm covload cell
Piv txwv li: ib qho kev ntim ntim ntau qhov hnyav 25kg, qhov siab tshaj plaws ntawm kev faib yog 1000. Tnws teev lub cev txais 3 L-BE-25 homload cells, qhov ntau yog 25kg, rhiab heev yog 2.0±0.008mV / V, arch choj voltage siab 12V. TNws nplai siv AD4325 meter. Nug seb lubload cell siv tuaj yeem phim lub 'meter'.
Kev daws: Tom qab kev sab laj, cov tswv yim nkag siab ntawm AD4325 meter yog 0.6μV / d, yog li raws li cov qauv sib txuam ntawm covload cell thiab lub 'meter', qhov tseeb input teeb liab ntawm lub 'meter' tuaj yeem tau txais raws li:
2×12×25/1000 Nws×3×25 = 8μV/d> 0.6μv/d
Yog li ntawd, lubload cell siv tau raws li qhov yuav tsum tau muaj ntawm qhov kev nkag siab ntawm qhov ntsuas thiab tuaj yeem phim cov cuab yeej xaiv.
2. Ua tau raws li qhov yuav tsum tau ua ntawm tag nrho cov ntsuas hluav taws xob. Qhov ntsuas hluav taws xob feem ntau yog tsim los ntawm peb ntu: ntsuas lub cev,load cell thiab ntsuas. Thaum xaiv qhov tseeb ntawm qhovload cell, qhov tseeb ntawm covload cell yuav tsum yog me ntsis siab dua qhov kev xam qhov theoretical, vim hais tias txoj kev xav yog feem ntau txwv los ntawm lub hom phiaj tej yam kev mob, xws li teev. Lub zog ntawm lub cev yog me ntsis zuj zus, qhov kev ua tau zoo ntawm cov cuab yeej tsis zoo heev, qhov chaw ua haujlwm ntawm qhov ntsuas yog qhov tsis zoo thiab lwm yam ncaj qha.cuam tshuam rau cov kev cai raugntawm qhov ntsuas.
Post lub sij hawm: Aug-11-2022