Indlela yokukhetha i-multihead weigher ngokunengqondo

Umbhali: Smartweigh–I-Multihead Weighter

I-multihead weigher iyisisetshenziswa sokuguqula amandla ukuya kugesi esingaguqula amandla abe amasiginali kagesi, futhi siyingxenye eyinhloko ye-multihead weigher. Kunezinhlobo eziningi zezinzwa ezingaqedela ukushintsha kwamandla kagesi, ngokuvamile okuhlanganisa uhlobo lwamandla okumelana nokumelana, uhlobo lwamandla kazibuthe kanye nenzwa ye-capacitive. Ukubaluleka kohlobo lwamandla kazibuthe ibhalansi yokuhlaziya ye-elekthronikhi, inzwa ye-capacitor iyingxenye ye-multihead weigher, futhi umshini wesisindo wohlobo lwe-resistance strain force uvame ukusetshenziswa emikhiqizweni eminingi yomshini wesisindo.

I-resistance strain multihead weigher ilula ngesakhiwo, iphezulu ngokunemba, futhi inohlu olubanzi lokusebenziseka, futhi ingasetshenziswa endaweni yemvelo empofu uma kuqhathaniswa. Ngakho-ke, i-resistance strain multihead weigher itholakala ku-multihead weigher. I-resistance strain multihead weigher yakhiwa ikakhulukazi i-polyurethane elastomer, i-resistance gauge ye-resistance gauge kanye nesekethe yamandla esinxephezelo.

I-polyurethane elastomer iyingxenye egcizelelwe ye-multihead weigher, eyenziwe nge-carbon steel yekhwalithi ephezulu kanye namaphrofayili e-aluminium alloy ekhwalithi ephezulu. I-resistance gauge ye-resistance gauge yenziwe nge-foil yensimbi eqoshwe ohlotsheni lwedatha yegridi, futhi amageji amane ohlobo lokumelana anamathiselwe ku-polyurethane elastomer ngendlela yesakhiwo sebhuloho. Endabeni yokungabi namandla, ama-resistors angu-4 wesekethe yebhuloho anenani elifanayo, isifunda sebhuloho sisesimweni esilinganiselwe, futhi okukhiphayo kunguziro.

Lapho i-polyurethane elastomer yonakaliswa ngamandla, igeji ye-resistance gauge nayo ikhubazekile. Phakathi nayo yonke inqubo ye-polyurethane elastomer ingaphansi kokuphoqelelwa nokugoba, amageji amabili okumelana nawo ayanwetshwa, ucingo lwensimbi lunwetshiwe, nenani lokumelana liyakhula, kanti amanye amabili ayaphoqwa, futhi inani lokumelana liyehla. Ngale ndlela, isifunda sebhuloho esilinganiswe ekuqaleni asisebenzi, futhi kunomehluko we-voltage osebenzayo kuzo zombili izinhlangothi zesekhethi yebhuloho. Umehluko we-voltage osebenzayo uhlobene nobukhulu bamandla ku-polyurethane elastomer. Hlola umehluko we-voltage osebenzayo ukuze uthole ubukhulu bamandla enzwa, i-voltage esebenzayo Ngemva kokuthi isignali yedatha isihloliwe futhi ibalwe iphaneli yensimbi, ukuze kusetshenziswe kangcono izilungiselelo zezakhiwo ezihlukahlukene zesisindo se-multihead, isikali se-multihead sakhiwa amafomu esakhiwo, futhi igama lenzwa livame ukubizwa ngokuhambisana nomklamo walo wokubukeka.

Isibonelo, inzwa ye-stacking chain (ibhalansi yemoto kagesi ebalulekile), uhlobo lwe-cantilever beam (ibhalansi ephansi, isikali se-warehouse, ibhalansi yemoto esebenza ngogesi), uhlobo lwekholomu (ibhalansi yemoto esebenza ngogesi, isikali se-warehouse), uhlobo lwemoto (isikali), uhlobo lwe-s ( ishede izikali) njll. I-multihead weigher medium ingafaka kuhlu izinzwa ngezakhiwo eziningi zesakhiwo. Uma inzwa ikhethwe kahle, isiza ukuthuthukisa izici zesisindo se-multihead.

Kukhona ukucaciswa okuningi namamodeli we-resistance strain multihead weweights, kusukela kumakhulu ambalwa amagremu kuya kumathani angamakhulu amaningana. Lapho ukhetha ububanzi besilinganiso se-multihead weigher, kufanele icaciswe ngokuya ngosayizi we-multihead weigher evame ukusetshenziswa. Umthetho wesithupha umi kanje: isamba somthwalo wenzwa (ubukhulu obuvumelekile bomthwalo wezinzwa ngazinye x inombolo yezinzwa) = 1/2~2/3 wesisindo esiphezulu sesisindo se-multihead.

Izinga lokunemba le-multihead weigher lihlukaniswe ngamaleveli amane: a, b, c, kanye no-d. Amabanga ahlukene anemikhawulo ehlukene yephutha. Izinzwa zeClass A zicaciswe ubuningi.

Inombolo engemuva kwebanga imelela inani lokuqinisekiswa kwe-metrological, uma idatha ibe nkulu, iba ngcono ikhwalithi yenzwa. Isibonelo, i-C2 isho ibanga elingu-C, amanani angu-2000 okuqinisekiswa kwe-metrological C5 isho ibanga elingu-C, amanani okuqinisekiswa kwe-metrological angu-5000. Ngokusobala i-C5 iphakeme kune-C2.

Amabanga ajwayelekile ezinzwa yi-C3 ne-C5, futhi lawa mabanga amabili ezinzwa angasetshenziswa ukwenza izikali ze-multihead ngebanga lokunemba le-III. Iphutha le-multihead weigher libangelwa ikakhulukazi iphutha lesistimu ecacile, iphutha le-lag, iphutha lokuphindaphinda, ukuphumuza ingcindezi, iphutha elengeziwe lezinga lokushisa lamaphuzu angu-zero kanye nephutha elingeziwe lokushisa elilinganiselwe lokuphumayo. Izinzwa zedijithali ezivele eminyakeni yamuva nje zibeka i-A/D ukuguqulwa kwamandla wesekethe kanye nesekhethi yokuphakelwa kwamandla e-CPU kwinzwa. Okuphumayo kwenzwa akusona isignali yedatha ye-analog esebenzayo ye-voltage, kodwa isignali ye-analog yesisindo esinesisindo esixazululwe ngesixazululo, esinezinzuzo ezilandelayo: 1. Iphaneli yezinsimbi Amasignali wedatha wenzwa ngayinye yedijithali angaqoqwa ngokuhlukana, abalwe ngokuvumelana i-equation yomugqa, futhi inzwa ngayinye ingalinganiswa ngokuzimela, futhi kungenzeka ukulungisa iphutha lamakhona amane ngesikhathi esisodwa kuphezulu kakhulu.

Ikhanda elikhulu kunawo wonke ezilinganisweni ze-multihead zisebenzisa izinzwa ze-digital kanye ne-analog ukulungiswa kwamaphutha amane, okuvame ukudinga ukulinganisa okuningi ukuze kucaciswe, isikhathi ngasinye ukuhambisa isisindo esijwayelekile esindayo, esidla isikhathi futhi sisebenza kanzima. 2. Ngenxa yokuthi iphaneli yezinsimbi ingakwazi ukubona izimpawu zedatha yazo zonke izinzwa, izinkinga zazo zonke izinzwa zingabonakala kuphaneli yensimbi, elungele ukulungiswa. 3. Inzwa yedijithali idlulisela isignali ye-analog ngokusebenzisa isixhumi esibonakalayo esingu-485, futhi ukudlulisela kuyibanga elide ngaphandle kokuthinteka.

Lahla izinkinga ezinzima nezingenwa kalula zokudlulisa isignali ye-pulse. 4. Amaphutha ahlukahlukene wenzwa angalungiswa ngokusho kwe-microcontroller ngaphakathi kwenzwa yedijithali, ukuze ulwazi lwedatha yenzwa yokukhipha lulunge kakhulu. I-multihead weigher ibizwa ngokuthi isimiso sezinzwa esimaphakathi se-multihead weigher, futhi izici zayo zinquma kakhulu ukunemba nokuthembeka kwe-multihead weigher.

Lapho uklama isikali se-multihead, umbuzo wokuthi ungasebenzisa kanjani izinzwa uvame ukuhlangana. I-multihead weigher iyidivayisi eguqula isignali yedatha yekhwalithi ibe okukhiphayo kwesignali kagesi engalinganiswa ngokunembile. Into yokuqala okufanele icatshangelwe lapho usebenzisa inzwa yindawo ethile yehhovisi lapho inzwa itholakala khona.

Lokhu kubaluleke kakhulu ekusetshenzisweni kahle kwezinzwa, futhi kuhlobene nokuthi inzwa ingasebenza kahle kanye nokunye ukuphepha nokuphila kwesevisi, ngisho nokuthembeka nokuphepha kwayo yonke imishini yesisindo. Ukulimala okubangelwa indawo engokwemvelo yenzwa kunalezi zici ezilandelayo: (1) Izinga lokushisa eliphakeme lemvelo libangela ukuthi inzwa ukuthi incibilikise into enamathelayo, ukushisela indawo, kanye nezinguquko zesakhiwo ekucindezelekeni okushisayo kwe-polyurethane elastomer. Izinzwa ezisebenza endaweni yemvelo yokushisa okuphezulu ngokuvamile zikhetha izinzwa ezikwazi ukumelana nokushisa, futhi kufanele futhi zengeze ukufakwa kwe-thermal, ukupholisa amanzi, ukupholisa umoya nezinye izinto zokusebenza.

(2) Izingozi zentuthu kanye nomswakama kumaphutha e-short-circuit yezinzwa. Endaweni yemvelo lapha, kufanele kusetshenziswe inzwa engangenisi umoya kakhulu. Izinzwa ezihlukene zinezindlela ezihlukene zokuvala, futhi ukusebenza kokuvala kuhluke kakhulu.

Ukuvalwa okujwayelekile kuhlanganisa ukugcwaliswa kwe-sealant kanye nemishini yokufaka i-rubber sheet, i-welding kagesi (i-arc welding machine, njll. Kusukela kumthelela wangempela wokubekwa uphawu, ukutywinwa kwe-welding kagesi kungcono kakhulu, futhi umthamo wokugcwalisa nokufaka uphawu awulungile. Ukuze inzwa esebenza endaweni ehlanzekile neyomile yemvelo ekamelweni, ungakhetha inzwa ngokuvala uphawu lokunamathela. Ngenzwa esebenza endaweni yemvelo enomswakama ophezulu kanye nentuthu, kufanele ukhethe ukuvala ukushisa kwe-pulse shock absorber noma i-Pulse shock absorber welding seal, inzwa egcwele i-vacuum nitrogen.

(3) Endaweni yemvelo enokugqwala okuphezulu, okunjengomswakama, amakhaza, i-asidi ne-alkali, okubangela ukulimala kwe-polyurethane elastomer, ukwehluleka kwesifunda esifushane nezinye izingozi ezinzwa, ungqimba lwangaphandle kufanele lukhethelwe ukufafaza nge-electrostatic noma Isembozo sepuleti lensimbi engenasici, esinokumelana nokugqwala okuhle nokusebenza kahle kokuvala. inzwa. (4) Ukulimala kwenkambu kazibuthe kusignali yedatha yenzwa ekhishwayo. Kulokhu, impahla evikelayo yenzwa yesixazululo ibhekwa ngokuqinile ukuze kubonakale ukuthi ayinawo yini amandla kazibuthe kagesi.

(5) Ukuvutha, ukuvutha, nokuqhuma akubangeli nje kuphela izingozi ezithuthukisiwe ezinzwa, kodwa futhi kuletha izinsongo ezinkulu kwezinye izisetshenziswa zemishini kanye nokuphepha kwempilo. Ngakho-ke, izinzwa ezisebenza ezindaweni zemvelo ezivuthayo, ezivuthayo neziqhumayo zicacisa ngokucacile izici zohlobo olungaqhumi: izinzwa ezingaqhumi kufanele zisetshenziswe endaweni yemvelo evuthayo, evutha umlilo, kanye neziqhumane. Isembozo sokuvala salolu hlobo lwenzwa akufanele sicabangele ukuqina kuphela, kodwa futhi sicabange ngokugcwele amandla okucindezela ohlobo lokuvimbela ukuqhuma kanye nohlobo lomswakama, olungangeni manzi kanye nokuqhuma kwentambo yokuphuma.

Okwesibili, ukukhethwa kwenani eliphelele lezinzwa kanye nohlu lokulinganisa: ukukhethwa kwenani eliphelele lezinzwa kuncike enjongweni eyinhloko ye-multihead weigher, izinga lamaphuzu asekelayo womzimba wesikali (inani lamaphuzu asekelayo kufanele isekelwe endaweni yesikhungo samandla adonsela phansi esikalini somzimba wejometri kanye nebhentshimakhi yephoyinti elithile lesikhungo samandla adonsela phansi) . Ngokuvamile, amanye ama-fulcrum esikalini asebenzisa izinzwa ezithile, kodwa izikali eziyingqayizivele njengezikali ze-electronic hook zikhetha inzwa eyodwa kuphela, kanti ezinye izikali zokuhlanganisa ubunjiniyela be-electromechanical kufanele zisebenzise ngokucacile inani lezinzwa ngokuvumelana nesimo esithile. Ukukhethwa kobubanzi bokulinganisa benzwa kungahlolwa ngokuya ngezici ezifana nosayizi wesikali, inani lezinzwa, isisindo sesikalo ngokwaso, kanye nesisindo sesondo esikhulu esingaba khona nomthwalo.

Ngokuvamile, lapho ibanga lokulinganisa lenzwa lisondela ekulayisheni kwenzwa ngayinye, kulapho kukhuphuka khona ukunemba kwesisindo. Kodwa-ke, ezinhlelweni ezithile, ngaphezu kokubizwa ngezinto, kukhona nesisindo sesilinganiso ngokwaso, isisindo se-tare, isisindo sesondo kanye nokushaqeka kokudlidliza. Ngakho-ke, uma usebenzisa ububanzi bokulinganisa inzwa, izici eziningi kufanele zicatshangelwe ukuze kuqinisekiswe ukuphepha nokuphila isikhathi eside kwenzwa.

Indlela yokubala yohlu lokulinganisa lwenzwa iye yacaciswa ngemva kokuhlolwa okuningi ngemva kokucabangela izakhi ezihlukahlukene ezibeka engozini umzimba wesikali. Ifomula ibalwa ngale ndlela elandelayo: C=K-0K-1K-2K-3(Wmax+W)/N. C- Ububanzi obulinganiselwe benzwa ngayinye W- Isisindo sesikali ngokwaso Wmax- Sibizwa ngokuthi inani eliphakeme kakhulu lesisindo sengqikithi yento engu-N- Isamba senani lama-fulcrums akhethwe yisikali K-0- Umshwalense wezohwebo inkomba, ngokuvamile engu-1.2~1.3 K-1- yenkomba ye-Shock ephakathi K-2-scale gravity center point offset index inkomba ye-K-3-air pressure.

Isibonelo, esikalini se-electronic floor esingu-30t, isisindo esiphezulu singama-30t, isisindo sesikali ngokwaso si-1.9t, izinzwa ezi-4 zikhethiwe, futhi ngokuya ngesimo esithile ngaleso sikhathi, inkomba yomshwalense wezohwebo K-0 = 1.25 , inkomba yomthelela i-K-1=1.18, kanye nesikhungo samandla adonsela phansi kuyakhethwa. Iphoyinti lokuchezuka inkomba K-2-=1.03, inkomba yokucindezela komoya K-3=1.02 Isixazululo: Ngokwendlela yokubala yobubanzi besilinganiso senzwa: c=K-0K-1K-2K-3(Wmax+W)/N. c=1.25×1.18×1.03×1.02×(30+1.9)/4=12.36t. Ngakho-ke, uhla lokulinganisa lwenzwa luyi-15t (umthamo wokulayisha wenzwa ngokuvamile u-10T, 15T, 20t, 25t, 30t, 40t, 50t, njll., ngaphandle uma kuwukwenza ngokwezifiso okuyingqayizivele).

Ngokusho kokuhlangenwe nakho komsebenzi, umsebenzi womshini wesisindo ngokuvamile ungaphakathi kwebanga lawo lokulinganisa lika-30% ~ 70%, kodwa umshini wesisindo onomthelela omkhulu kuyo yonke inqubo yokufaka isicelo, njengebhalansi yethrekhi eguquguqukayo, ibhalansi yemoto ye-elekthronikhi eguquguqukayo, i-stainless. isikali se-steel plate, njll. Futhi, izinkambu zokusetshenziswa kwezinzwa ezihlukahlukene kufanele zicatshangelwe. Isihluthulelo sokukhethwa kwefomu lenzwa luhlobo lwesisindo kanye nokuhlelwa kwendawo yangaphakathi, ukuqinisekisa ukulungiselelwa okufanele, isisindo sinokwethenjelwa, ngakolunye uhlangothi, izincomo zomkhiqizi kufanele zicatshangelwe. Abakhiqizi ngokuvamile badinga inkambu yesicelo senzwa ngokuya ngokukhuthazela kwenzwa, imingcele yokusebenza, indlela yokufaka, ifomu lesakhiwo, impahla ye-polyurethane elastomer nezinye izici Izinzwa ze-Beam zifanele ukunqwabelana kwensimbi nezinzwa zamaketango okukhipha njengezikali, izikali zebhande le-elekthronikhi, nokuhlolwa. izikali.

Ekugcineni, izinga lokunemba kwenzwa kufanele likhethwe. Izinga lokunemba lenzwa lihlanganisa ukungahambisani kwenzwa, ukuphumula kwengcindezi, ukulungiswa kokuphumula kwengcindezi, ukunemba, ukuphindaphinda, ukuzwela nezinye izinkomba zokusebenza. Uma usebenzisa inzwa, hhayi kuphela imithetho yokunemba yegama le-elekthronikhi, kodwa futhi nezindleko zayo kufanele zicatshangelwe.

Ukukhethwa kwamaleveli enzwa kufanele kucabangele le mibandela emibili elandelayo 1. Cabangela izinhlinzeko zokufakwayo kwephaneli yezinsimbi. Isikhombi sokukala sibonisa umphumela wesisindo solwazi ngemva kokuba isignali yedatha yokuphumayo yesisindo se-multihead iba nkulu futhi ukuguqulwa kwe-A/D kuxazululiwe. Ngakho-ke, isignali yedatha yokuphumayo yesisindo se-multihead kufanele ibe nkulu kunosayizi wesimo sokufakwayo ocaciswe iphaneli yensimbi. Ukuzwela okukhiphayo kwesisindo se-multihead silethwa kufomula efanayo phakathi kwenzwa nephaneli yensimbi, futhi umphumela wokubala kufanele ube mkhulu kunozwela okokufaka olucaciswe iphaneli yensimbi.

Ifomula ehambisanayo ye-multihead weigher kanye nephaneli yensimbi: ukuzwela okukhiphayo kwemitha yesisindo * i-voltage yokunikezwa kwamandla yesikhuthazo * usayizi wesikali, idigri ye-myopia yemitha yesisindo * inombolo yezinzwa * ububanzi bokulinganisa kwenzwa. Isibonelo, umshini wokupakisha onesisindo esingu-25kg nesikali esine-myopia enkulu yamabanga okulinganisa angu-1000 khetha izinzwa ezingu-3 L-BE-25 ezinobubanzi obungu-25kg nokuzwela okungu-2.0±0.008mV/V, khetha iphaneli yensimbi ye-AD4325 yezikali ezinomfutho osebenza ngogesi we-arch bridge we-12V. Ibuza ukuthi ingabe inzwa ekhethiwe izohlanganiswa nedeshibhodi.

Isixazululo: Ukuzwela okokufaka kwephaneli yensimbi ye-AD4325 ngu-0.6μV/d, ngakho-ke ngokwefomula yokufanisa phakathi kwesisindo se-multihead nephaneli yensimbi, isignali ethile yedatha yokufaka yephaneli yensimbi ingu-2×12×25/1000×3×25=8μV/d>0.6μV/d. Ngakho-ke, isikali se-multihead esikhethiwe singacabangela ukulawulwa kokuzwela okokufaka kwephaneli yensimbi, engahlanganiswa nokukhethwa kwephaneli yezinsimbi. 2. Cabangela imithethonqubo yokunemba kwezihloko ze-elekthronikhi.

Ukumelwa kwe-elekthronikhi ikakhulukazi kwakhiwe izingxenye ezintathu: isikali, inzwa kanye nephaneli yezinsimbi. Uma ukhetha ukunemba kwe-multihead weigher, ukunemba kwe-multihead weigher kuphakeme kancane kunevelu ebaliwe yethiyori eyisisekelo. Ithiyori eyisisekelo ivame ukunqunyelwa izizathu eziqondile, njengezikali. Amandla okucindezela esikalini ampofu kancane, izici zephaneli yensimbi zinhle kakhulu, indawo yehhovisi yesilinganiso idlulele nezinye izici.

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