Overcenter Valve vs Counterbalance Valve: Qhov twg yog txoj cai rau koj daim ntawv thov?
2024-01-29 IBNyob rau hauv hydraulic systems, nws yog ib qho tseem ceeb kom nkag siab qhov txawv ntawm ib qho overcenter valve thiab acounterbalance valve. Txawm hais tias ob qho tib si zoo sib xws hauv qee qhov kev ua haujlwm, piv txwv li, ob qho tib si tuaj yeem siv los tiv thaiv kev thauj khoom los ntawm kev poob dawb, muaj qee qhov sib txawv ntawm lawv cov qauv kev ua haujlwm thiab cov ntawv thov scenarios.
Qhov txawv nruab nrab ntawm qhov nruab nrab valve thiab balanced valve
Lub overcenter valve (tseem hu ua rov qab kos valve) yog ib qho kev pabcuam pabcuam kev pabcuam uas muaj kev kuaj xyuas dawb. Qhov kev sib tw hu ua pilot piv yog hais txog qhov sib piv ntawm qhov chaw tsav tsheb siab thiab qhov chaw hla dhau. Qhov sib piv no yog qhov tseem ceeb rau lub siab ntau tshaj qhov uas lub valve tuaj yeem mus los ntawm kaw kom qhib tag nrho, tshwj xeeb tshaj yog nyob rau hauv qhov sib txawv load pressures. Ib qho piv txwv qis txhais tau hais tias yuav tsum muaj qhov sib txawv ntawm tus tsav loj dua kom qhib lub valve. Raws li lub load siab nce, qhov yuav tsum tau sib txawv nyob rau hauv pilot siab rau ntau pilot ratios ua me.
Lub counterbalance valve yog lub valve siv los tiv thaiv lub tog raj kheej kom tsis txhob poob, muab kev ua haujlwm zoo dua. Muab piv rau cov kws tsav dav hlau ua haujlwm, cov khoom siv hluav taws xob tsis ua rau lub cev tsis muaj zog thaum tswj cov khoom txo qis. Counterbalance li qub feem ntau siv lub khob hliav qab lossis spool siab tswj cov ntsiab lus, nrog lub khob hliav qab cov khoom siv los tiv thaiv lub tog raj kheej drift thiab spool counterbalance li qub siv los ua nres li qub hauv daim ntawv thov hydraulic.
Kev xaiv daim ntawv thov
Kev siv cov counterbalance li qub nyob rau hauv lub tog raj kheej txav yog tsim nyog thaum loads yuav ua rau lub actuator overspeed sai dua lub twj tso kua mis. Xwb, ntsuas qhov ntsuas kuj tseem siv tau rau hauv ob lub tog raj kheej: kev tsav tsheb siab yuav qhib lub valve ntawm lub tog raj kheej hnyav tshaj plaws ua ntej, uas yuav ua rau cov khoom xa mus rau lwm lub tog raj kheej, nrog rau lub valve tseem raug kaw rau lub sijhawm no, xav tau. qhov qhib ntawm Tus tsav siab tsawg dua.
Thaum xaiv ntawm lub pob valve lossis lub valve sib npaug, qhov kev ruaj ntseg ntawm lub tshuab yuav tsum xav txog. Ntau cov khoom tsis ruaj khov yuav tsum siv tus qauv qis dua los ua kom lub tshuab ruaj khov. Hom valve nyob rau hauv tus tsim kuj muaj feem xyuam rau lub inherent stability ntawm cov khoom. Piv txwv li, qhov kev daws teeb meem tshaj plaws hauv nruab nrab uas tsim los ntawm Eaton siv tus qauv ncaj qha los ua kom lub ntsiab lub caij nplooj ntoos hlav muaj qhov nruj dua. Yog li ntawd, thaum lub load siab hloov, lub valve yuav tsis hnov mob sai heev, txo cov kev hloov pauv thiab muab tag nrho System stability.
