Smart Weigh tau cog lus los pab cov neeg siv khoom nce kev tsim khoom ntawm tus nqi txo.
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Smart Weigh tau cog lus los pab cov neeg siv khoom nce kev tsim khoom ntawm tus nqi txo.
Author: Smartweigh-Multihead Weighter
Multihead weighter yog lub tshuab uas hloov lub zog kinetic ntawm ib txoj kev mus rau lwm qhov. Tshwj xeeb, ntau lub taub hau hnyav yog lub zog ntsuas hluav taws xob uas hloov pauv lub zog siv hluav taws xob (xws li kev txhawb nqa quab yuam, shrinkage, ua haujlwm siab lossis torque) rau hauv cov cim hluav taws xob uas tuaj yeem ntsuas qhov tseeb. Lub zog compressive ntawm cov ntaub ntawv teeb liab hloov nrog lub zog compressive ntawm lub zog tso tawm.
Muaj peb yam yooj yim ntawm multihead weighter raws li cov ntaub ntawv tso zis: hydraulic, pneumatic thiab tsis kam ntsuas ntsuas. Cov hom hnyav tshaj plaws uas siv hauv kev tsim khoom lag luam yog ntau lub taub hau hnyav nrog kev sib xyaw ua ke. Qhov kev ntsuas lub cev muaj zog ntau lub taub hau hnyav muaj cov khoom siv hlau lub cev (lossis "elastic yellow component") uas kho qhov ntsuas qhov ntsuas tsis kam.
Lub vaj tsev feem ntau yog ua los ntawm txhuas, carbon steel los yog stainless hlau phaj, ua rau nws muaj zog heev tab sis ductile heev. Tus cwj pwm ntawm multihead weighter deforms me ntsis thaum lub teev tau thov, tab sis rov qab mus rau nws cov duab qub thoob plaws, tshwj tsis yog tias nws yog lub nra. Yuav kom teb tau zoo dua rau kev hloov ntawm lub cev zoo, qhov ntsuas qhov ntsuas qhov ntsuas kuj hloov nws cov tsos.
Qhov no nyob rau hauv lem ua rau qhov kev hloov pauv ntawm qhov kev tiv thaiv kab mob, uas tuaj yeem ntsuas qhov tseeb raws li qhov kev hloov pauv hloov pauv. Vim hais tias xws li kev hloov pauv hauv cov zis muaj feem cuam tshuam nrog qhov hnyav ntawm qhov tso tawm, qhov hnyav ntawm cov khoom tuaj yeem txiav txim siab los ntawm kev hloov pauv ntawm kev ua haujlwm. Lub multihead weighter ua haujlwm li cas? Los teb "Yuav ua li cas lub multihead weighter ua haujlwm?" koj yuav tsum xub to taub "Yuav ua li cas yog ib tug strain gauge ua hauj lwm?" Lub ntsuas qhov ntsuas qhov ntsuas yog ib qho cuab yeej ntsuas qhov kev hloov pauv ntawm lub resistor thaum lub zog tawm.
Ib qho kev tiv thaiv kab mob ib txwm muaj xws li cov hlau mesh zoo heev ntawm cov ntawv ci, muab tso rau hauv cov qauv kab sib chaws, ua rau cov hlau resistor hloov pauv thaum lub zog quab yuam tawm ntawm ib qho axis. Muaj ntau hom kev tiv thaiv kab mob los xaiv los ntawm: Linear resistance strain gauge: Cov kab hluav taws xob txuas nrog rau sab nraub qaum ntawm qhov ntsuas kev tiv thaiv kab mob yog qhov sib npaug mus rau ntawm ntug ntawm qhov ntsuas qhov ntsuas. Qhov no yog siv los ntsuas qhov tseeb radial strain thiab dabtsi yog khoov hom.
Txiav tsis kam strain gauges: Cov kab hluav taws xob txuas nrog rau sab nraub qaum ntawm qhov ntsuas kev tiv thaiv kab mob tau muab tso rau ob sab ntawm kev ua haujlwm siab ntawm 45o kev taw qhia. Qhov no yog siv los ntsuas qhov kev txiav tawm kom raug. Resistance strain gauges feem ntau yog siv los ua ke nrog ntau qhov kev ntsuas kev tiv thaiv kab mob txhawm rau txhim kho qhov tseeb.
Ib lub tshuab hluav taws xob digital hluav taws xob tiv thaiv kab mob ntsuas yog hu ua lub quarter choj, ob lub tshuab hluav taws xob digital hluav taws xob tiv thaiv kab mob hu ua ib nrab choj, thiab plaub lub tshuab hluav taws xob digital hluav taws xob tiv thaiv kab mob hu ua tus choj tag nrho. Resistance strain gage resistor kev hloov pauv tsis zoo ib yam li qhov hnyav ntawm lub roj teeb rov qab rau hauv lub zog txhawb nqa. Qhov nro nrug ua rau qhov kev tiv thaiv strain gauge mos thiab elongated, nqa lub resistor.
Lub zog quab yuam shortens lub thickness ntawm cov kuj strain gauge thiab txo cov kuj. Qhov ntsuas qhov ntsuas qhov ntsuas tau txuas nrog lub nraub qaum nyias (taag bracket), uas tam sim ntawd txuas mus rau qhov ntsuas qhov hnyav, tso cai rau qhov ntsuas qhov ntsuas qhov ntsuas kom hnov lub zog quab yuam ntawm ntau lub taub hau hnyav. Qhov kev hloov pauv ntawm cov resistor raug ntsuas los ntawm ib qho kev tiv thaiv kab mob me me heev, txog 0.12°.
Lub rhiab heev ntawm lub load module nce nrog tus naj npawb ntawm strain gauges tso tawm. Ib txoj hauv kev zoo los tig qhov kev hloov me me no mus rau ib yam dab tsi uas xav tau ntau dua yog kev sib txuas lawv li Smart hnyav txuas hniav. Hom kev tiv thaiv strain gauges Cov kev tiv thaiv kab mob ntsuas tau muab tso rau hauv cov kev taw qhia sib txawv, thiab qhov tseeb yog nyob rau hauv hom quab yuam uas raug ntsuas.
Bending strain, shearing strain, radial strain, torque thiab ua hauj lwm siab yog txhua yam raug ntsuas siv ib tug tshwj xeeb rational kev npaj ntawm kuj strain gauges. Lub Smart hnyav choj Circuit Court yog nruab nrog plaub qhov sib npaug ntawm cov resistors thiab siv cov kev paub txog kev khiav hauj lwm qhov hluav taws xob, raws li qhia hauv qab no: 5 yog qhov paub ruaj khov kev khiav hauj lwm voltage thiab VO yog ntsuas kom raug. Yog tias tag nrho cov resistors sib npaug, nws txhais tau tias R1 / R2R3 / R4 thiab ces VO yog xoom.
Yog tias muaj kev hloov pauv hauv ib qho ntawm qhov kev tiv thaiv qhov tseem ceeb, yuav muaj kev hloov pauv hauv VO, uas tuaj yeem ntsuas tau thiab qhia tau siv Ohm txoj cai. Ohm txoj cai lij choj hais tias qhov nyiaj tam sim no (I, hauv amperes) dhau los ntawm ib qho hluav taws xob conductor ntawm ob lub ntsiab lus yog qhov zoo rau kev khiav hauj lwm voltage (V) ntawm ob lub ntsiab lus. Resistor (R, raug ntsuas hauv ohms) yog qhia raws li lub ntsiab lus sib txawv hauv lub koom haum no thiab tsis muaj dab tsi cuam tshuam nrog tam sim no ntws.
Ohm txoj cai yog qhia nyob rau hauv tus qauv I = V / R. Thaum ua ntawv thov rau 4 daim ntawv strips ntawm Smart hnyav choj fais fab Circuit Court, qhov sib npaug tshwm sim yog: Nyob rau hauv lub multihead weighter, qhov no kuj yog hloov los ntawm ib tug kuj strain gauge nyob rau hauv lub hloov ntawm lub zog txhawb thiab lub meej ntsuas ntawm shrinkage. Thaum lub zog raug tso tawm mus rau lub roj teeb uas hnyav dua, cov resistors hauv txhua qhov kev hloov pauv hloov pauv thiab VO raug ntsuas kom raug.
Los ntawm cov ntaub ntawv tshwm sim, VO tuaj yeem sau tau yooj yim siv cov txheej txheem saum toj no ntawm kev sib npaug.
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