Lub forklift hluav taws xob yog hais txog lub tshuab thauj khoom thiab tshem tawm cov khoom siv los ntawm lub roj teeb thiab siv los ntawm lub tshuab hluav taws xob. Piv nrog rau sab hauv combustion forklifts, nws muaj cov yam ntxwv tsis muaj kuab paug, tsis muaj suab nrov, thiab ua haujlwm yooj yim. Nws yog tshwj xeeb tshaj yog haum rau kaw qhov tsua nrog kub thiab av noo, kev cob qhia uas muaj cua tsis zoo, thiab lwm qhov chaw uas muaj ib puag ncig siab.
Txoj kev loj hlob ntawm kev tsav hluav taws xob thiab kev tswj cov tshuab yog qhov tseem ceeb nrog rau tag nrho cov txheej txheem ntawm kev tsim hluav taws xob forklifts. Los ntawm qhov kev xav ntawm lub sijhawm, nws tau kwv yees li ntawm plaub theem ntawm kev txhim kho hauv qab no. Tom ntej no, hluav taws xob forklift manufacturers yuav qhia koj txog nws.
Lub forklifts pib hluav taws xob tag nrho yog tsav los ntawm DC excitation motors, thiab kev tswj ceev ntawm cov motors tau paub los ntawm kev sib txuas cov resistors, hloov lub davhlau ya nyob twg voltage ntawm lub roj teeb pob, los yog hloov cov sib nqus flux ntawm lub cev muaj zog magnetic teb. Tam sim no, qee zaus pom ntawm cov hluav taws xob forklifts ua ntej, uas yog cov khoom siv tshem tawm.
Hauv kev tsav tsheb thiab kev tswj hwm ntawm cov roj teeb tuav cov tshuab hauv xyoo 1970, cov tuam txhab hluav taws xob forklift tau hais rau txhua tus neeg tias nyob hauv Suav teb, cov tshuab hluav taws xob siv thaum xyoo 1980s yog cov khoom lag luam loj. Lub cev muaj zog yog tseem tsav los ntawm series excitation thiab muaj tseeb tam sim no, thiab kev tswj ntawm lub cev muaj zog siv ib tug thyristor tshiab yoj ntaus ntawv, tab sis kev tswj ntawm lub yoj ntaus ntawv yog tsuas yog raws li nyob rau hauv discrete Cheebtsam los yog ib tug me me ntawm kev sib txuas circuits.
Kev tsav tsheb thiab kev tswj hwm ntawm hluav taws xob forklift hauv xyoo 1980s. Lub tshuab hluav taws xob pallet tsheb no tseem tau tsav los ntawm DC lub cev muaj zog, txawm hais tias thyristor chopper kuj tseem siv.
Txawm li cas los xij, cov chaw tsim khoom ntawm lub tshuab hluav taws xob forklift tau hais rau txhua tus neeg tias nws siv lub microprocessor los tswj cov gradient, thiab txuas nrog ib qho chaw sab nraud. Nws tuaj yeem teeb tsa hom kev thauj khoom thiab kev ua haujlwm tsis zoo ntawm tus maub los, thiab ua txhaum kev kuaj xyuas ntawm tus maub los. Kuaj thiab qhia txog kev ua haujlwm ntawm kev sib tsoo braking.
Kev tswj ceev ceev ntawm lub cim tshiab ntawm hluav taws xob forklifts yog cov khoom lag luam txawv teb chaws hauv xyoo 1990. Nws siv cov khoom siv hluav taws xob semiconductor nrog kev ua haujlwm ntau dua-MOSFET raj los tsim cov yoj tswj ntawm DC lub cev muaj zog.
Vim tias lub raj MOSFET siv los ua cov cuab yeej tswj hwm tam sim no sib txawv, qhov kev hloov pauv yoj tswj Circuit Court tau yooj yim, thiab qhov hluav taws xob poob qis thaum lub raj qhib, thiab cov cua sov tsawg dua: vim qhov nce hauv kev khiav hauj lwm zaus (nce mus txog 15kHz lossis siab dua), lub cev muaj zog ua haujlwm zoo dua. Kev poob siab txo qis: Kev tswj ntawm cov chopper txais kev ua haujlwm micro. Ntxiv nrog rau kev teeb tsa kev ua haujlwm tsis zoo thiab paub txog kev rov tsim dua tshiab thiab lwm yam kev tswj hwm, nws kuj tseem muaj kev tiv thaiv kev ua haujlwm xws li overvoltage, overcurrent, thiab overheating, thiab muaj qhov ua txhaum ntawm tus kheej kev kuaj mob. . Cov tuam txhab hluav taws xob forklift qhia txhua tus neeg tias hom kev tswj ceev no yog nruab rau ntawm lub cim tshiab ntawm cov roj teeb forklifts.
