Valve hydraulique directionnelle Mid-Position (Neutre) Baarakɛcogo: O, H, M, Y

Jiko siratigɛ la, sirako ɲɛnabɔli bɔlɔnw bɛ tulu degunlen bila ka taa baarakɛminɛnw na, wa fɛnɲɛnɛma jɔyɔrɔ neutre (cɛmancɛ) jɔyɔrɔ ka bon kosɛbɛ sistɛmu kɛcogo la. Neutre position bɛ a ɲɛfɔ cogo min na port naani (degun P , tank T , ani baarakɛyɔrɔ port A/B ) bɛ ɲɔgɔn sɔrɔ ni valve spool bɛ cɛmancɛ la. Cɛmancɛ-yɔrɔ (neutre) baarakɛcogo naani minnu bɛ Kɛ ɲɔgɔn fɛ – O, H, M, Y – olu bɛ port jὲɲɔgɔnyaw danfaralenw ɲɛfɔ. Santiri baara kelen-kelen bɛɛ bɛ baarakɛcogo danfaralen di: misali la, kelen bɛ se ka baarakɛminɛn datugu a nɔ na , ka sɔrɔ dɔ wɛrɛ bɛ pɔnpe bolicogo jigin ka taa tanki la . Nin spool baarakɛcogo ninnu faamuyali bɛ OEMw ni masinw dilannikɛlaw dɛmɛ u ka jibolisiraw dilanni kɛcogo ɲɛ walasa ka baara kɛ ka ɲɛ, ka sabati ani ka doni kunbɛn.

• O-type (Closed Center): Port naani bɛɛ (P, A, B, T) bɛ datugu neutre la. Jibɔ si tɛ kɛ, o la pɔnpe bɛ degun lase sistɛmu ka dɛmɛsira ma walima k’a minɛ. O bɛ baarakɛminɛn datugu a jɔyɔrɔ la (doni minɛcogo ɲumanba) nka a tɛ jigin , o bɛ se ka fanga tiɲɛ ani ka funteni lawuli. pɔnpe

• H-suguya (Cɛmancɛ da wulilen): Port P→T ani A↔B bɛɛ dabɔlen don . Pɔnpe bolicogo bɛ wuli ka segin ka taa tanki la (sistema unloads ) ani baarakɛyɔrɔw bɛ ɲɔgɔn cɛ, o bɛ kɛ sababu ye ka actuator kɛ ka pan kɛnɛma fanga kɔrɔ. O bɛ degun bɔ baarakɛbaliya waati la (a bɛ fanga mara) nka a bɛ doni minɛcogo bali (actuateurs bɛ wuli ni fanga tɛ u la).

• M-suguya (Tandem Center): P→T bɛ da wuli ka A/B datugu. Pɔnpe bɛ jigin ka taa tanki la (i n’a fɔ H-type) ani baarakɛyɔrɔw bɛ datugu (i n’a fɔ O-type). Nin santiri hybride in bɛ silinda datugu (a bɛ doni minɛ) o bɛɛ n’a ta hali bi a bɛ pɔnpe jibɔ fili tanki la. A bɛ doni minɛcogo sabatili ni pɔnpe jigincogo fila bɛɛ di walasa ka fanga dɔgɔya.

• Y-suguya (Float Center): A ni B fo T da bε nka P da bε . Actuator sow bɛ siri tanki la (o la silinda bɛ pan) nka pɔnpe bɔyɔrɔ bɛ datugu. O b’a to silinda bɛ taa a yɛrɛ la (nafa bɛ a la ka jigin walima ka pan) ni tansiyɔn tolen tɛ ɲɔgɔn kan , ka sɔrɔ pɔnpe bɛ to degun na (a tɛ jigin).

Cɛmancɛ jɔyɔrɔ kelen-kelen bɛɛ bɛ baarakɛcogo sariyakolow ni kɛcogo wɛrɛw lase. Misali la, O suguya valve kɔnɔ, actuator bɛ datugu ji la 'hali ni kɛnɛma fanga dɔ bɛ baara kɛ, actuator tɛ se ka lamaga' – a ka ɲi kosɛbɛ clamping walima precision stop. H-suguya la, spool 'a bɛ port bɛɛ da wuli walasa silinda ka pan', o nafa ka bon circuit multi-circuit systems walima manual overrides la. Tandem M-suguya 'a bɛ actuator datugu' k'a sɔrɔ a bɛ pɔnpe to a ka segin ka lamini, ani Y-type 'a bɛ actuator bila floating state la' ni shock characteristics moderate ye.

O-Type (Closed-Center) Cɛmancɛ-yɔrɔ

Ni O-type (centre closed) spool ye, port bɛɛ bɛ datugu neutre jɔyɔrɔ la. Tiɲɛ na, degun (P), tanki (T) ani baarakɛyɔrɔw (A/B) bɛ danfara la. O bɛ tulu minɛ silinda fan fila bɛɛ la, ka datugu pewu. actuator O de kosɔn, doni bɛ minɛ tigitigi ni sɛgɛn tɛ, wa jɔyɔrɔ tiɲɛni ka bon. Daminɛ lamaga bɛ nɔgɔya bawo actuator ka tulubɔyɔrɔw falen don (cushioning initial movement) Nka, frein bɛ hydraulique choc (ji-sɔgɔli) lase ka da degun barikama kan. Nafa min b’a la, o ye ko pɔnpe tɛ se ka jigin – a bɛ taa a fɛ ka tulu gɛrɛntɛ ka ɲɛsin bɔgɔdaga datugulen ma, o bɛ se ka fanga tiɲɛ ani ka funteni bila mɔgɔ la. O-type valves ka fisa ni baarakɛminɛnw ye minnu mago bɛ doni minɛcogo gɛlɛn na (presses, clamps, heavy lifts) ani jɔyɔrɔfalenba.

H-Type (Open-Center) Cɛmancɛ-yɔrɔ

H suguya (cɛmancɛ da wulilen) bɔgɔlan bɛ P→T ni A↔B cɛ ni u bɛ cɛmancɛ la. Port naani bɛɛ dabɔra ka ɲɛ. Tumu min bɛ degun, o bɛ bɔ pɔnpe la ka taa jidagayɔrɔ wɛrɛ la, o bɛ sitɛmu jigin ani ka jɔli degun dɔgɔya. A ni B baarakɛyɔrɔw bɛ ɲɔgɔn cɛ, o b’a to silinda bɛ se ka pan: kɛnɛma fanga dɔ bɛ se k’a lamaga k’a sɔrɔ a ma se ka a yɛrɛ tanga. O bɛ H-suguya bɔlɔnw kɛ fɛn ɲumanw ye minnu bɛ se ka kɛ sɛrɛkiliw ye minnu bɛ baara kɛ ni fɛn caman ye walima sistɛmu minnu mago bɛ bololabaarakɛlaw ka wulicogo la (walekɛla 'floats' doni kɔrɔ). Lamaga daminɛni bɛ se ka kɛ ni jiginni dɔ ye (kɔkolo-tansiyɔn tɛ yen), nka jɔli bɛ nɔgɔya ka tɛmɛ O suguya kan barisa ji bɛ se ka yaala. Kuma bɛɛ la, H suguya santiriw bɛ fanga mara (pɔnpe jibɔ bɛ fili tanki kɔnɔ) ani ka sistɛmu jigincogo di, nka u tɛ actuator datugu. U bɛnnen don kosɛbɛ baara minnu na, baara caman bɛ pɔnpe kelen na yɔrɔ minnu na walima yɔrɔ minnu na float/neutral drift bɛ sɔn.

M-Type (Centre Tandem) Cɛmancɛ-yɔrɔ

M suguya walima tandem cɛmancɛ bobinew bɛ P→T siri ɲɔgɔn na nka u bɛ A ni B bali . Ni neutre don, pɔnpe bɛ surunya ka taa tanki la (a bɛ pɔnpe fanga jigin) ka sɔrɔ actuator ports bɛ to ka datugu. O bɛ nafa jɔnjɔnw fara ɲɔgɔn kan: silinda bɛ minɛ a nɔ na (k’a masɔrɔ A/B bɛ datugu) ani pɔnpe jibɔ bɛ segin jidagayɔrɔ la (kuran bɛ bɔ). M-suguya bɛ doni minɛcogo sabatili di i n’a fɔ O-suguya, ni fanga dɔgɔyali ye. H-suguya Lamaga daminɛ/dabila bɛ nɔgɔya (pɔnpe tɛ doni kɛlɛ lafiɲɛbɔ waati) ani pɔnpe tɛ degun, o bɛ funteni dɔgɔya. A ka c’a la, tandem-center valves bɛ sugandi minɛn girinmanw ni fɛnw kɔrɔtayɔrɔw kama, doni dacogo lakananen ni pɔnpe jigincogo fila bɛɛ ka kan ka kɛ yɔrɔ minnu na (misali la, jibɔlanw, wulilanw).

Y-Type (Float-Center) Cɛmancɛ-yɔrɔ

la Y-suguya (float) cɛmancɛ , spool bɛ P bali nka a bɛ A→T ni B→T siri ɲɔgɔn na . Silindri so da b’a la ka don tanki kɔnɔ, o b’a to actuator bɛ se ka pan walima ka wuli kɛnɛma fanga kɔrɔ. Ikomi P datugulen don, pɔnpe bɛ degun jɔ (a tɛ jigin) nka jibɔ tɛ se ka bɔ valve kɔnɔ. A jɔyɔrɔba la, actuator bɛ 'neutral float' kɔnɔ – kɔ-degun tɛ yen walasa ka lamaga kɛlɛ. Y-santiriw nafa ka bon doni jigincogo walima a binni hɔrɔnyalen na (misali la, foroko walima bobine jigincogo). U bɛ daminɛ/dabila sɔgɔsɔgɔninjɛ danmadɔ di (O ni H cɛ) ani degun tɛ wuli actuator kɔnɔ. Pɔnpe bɛ baara kɛ hali bi ni port dagalen ye, o la Y-suguya tɛ fanga sɔrɔ i n’a fɔ H/M. Nka ni joli bɛ actuator tansiyɔn na ka taa tanki la, Y-centers bɛ residual pressure spikes bali , ka jaabi ni sabatili ɲɛ ka taa a fɛ shifts waatiw la

Santiri baarakɛcogo sumalen

Nafa minnu bɛ sɔrɔ a la ani jateminɛ minnu bɛ kɛ dilancogo la

• Energy Efficiency (Pump Unload):  H- ni M suguya santiriw bɛ pɔnpe jibɔ fili jidagayɔrɔ la ni a ma baara kɛ, o la pɔnpe tɛ degun kunntan jɔ. O bɛ dɔ bɔ fanga tiɲɛni ni funteni na kosɛbɛ. Cɛmancɛ datugulen (O) ni flot (Y) bɛ pɔnpe degun (a tɛ jigin), o bɛ se ka kɛ baara dɔgɔyali ye ni valve sigilen bɛ neutre la waati jan kɔnɔ.

• Doni minɛni ni a sabatili:  O- ni M suguya cɛmancɛw bɛ actuator ports bali, ka silinda minɛ ka gɛlɛya hali ni kɛnɛma fanga bɛ a la. O ka ɲi kosɛbɛ jɔyɔrɔ tigitigi walima lakana kama. H- ni Y-suguya bɛ a to actuator ka pan (A/B bɛ siri tanki la walima ɲɔgɔn na), o la u tɛ se ka doni minɛ – silinda bɛ se ka wuli ni fanga kɛra.

• Tɛmɛsira ni sɔgɔsɔgɔninjɛ ɲuman :  Santiri datugulenw (O/M) bɛ lamaga daminɛni sumaya (actuateur tulu bɛ siri kaban) nka u jɔli ka gɛlɛn (inersi shock on brake). Santiri dafalen/float (H/Y) bɛ daminɛ-kusɔn fitinin sɔrɔ nka u bɛ dɔgɔya ka ɲɛ (ji tɛmɛsira da wulilen). Y-santiriw bɛ balansi don: u bɛ actuator sow fiɲɛbɔ ka taa tank la, o bɛ dɔ bɔ shock la ni i y’a suma ni O/M ye.

• A kɛcogo caman na:  Baarakɛcogo neutre sugandili bɛ valve bɛ bɛn baarakɛcogo ma. Misali la, O-santiriw bɛ kɛ sirilanw na, pressew la, walima lakana siraw la, yɔrɔ minnu na u minɛni kosɛbɛ, o nafa ka bon kosɛbɛ. H-santiriw bɛ bɛn silinda caman masinw ma walima bololabaarakɛminɛnw (u bɛ pan doni kɔrɔ ani pɔnpe jiginni). M-santiriw bɛ se ka kɛ fɛn caman na ka ɲɛsin fɛn girinmanw kɔrɔtalanw ma walima jilafɛnw ma minnu mago bɛ fɛnw bɔli ni u datuguli fila bɛɛ la. Y-santiriw bɛ sugandi ji motɛriw kama walima jigin baara (float without pressure buildup). Tuma caman na, fɛn dilannikɛlaw bɛ spool sugandi caman di walasa dilanbagaw ka se ka valve cɛmancɛ baara bɛn ni sistɛmu kuntilenna ye.

Santiri baarakɛcogo ɲuman sugandili

• Closed-Center (O): Aw bɛ O suguya ta ni aw mago bɛ yɔrɔ tigitigi marali ni doni dacogo la. Misali la, ji-minɛnw, sirilanw, walima baara suguya o suguya, a kɛcogo ka kan ka to yɔrɔ min na ni a tɛ fɛn wɛrɛ ye.

• Open-Center (H): Aw bɛ H suguya kɛ sistɛmuw kama minnu bɛ ni baarakɛminɛn caman ye pɔnpe kelen kan walima yɔrɔ minnu na pɔnpe bolicogo basigilen ka kan ka fili jidagayɔrɔ la. O bɛ funteni dɔgɔya ani ka silindaw bila ka 'float' (bolola wotoro walima counterweight action) neutre waati.

• Tandem-Center (M): M-suguya ka ɲi ni aw b’a fɛ ka pɔnpe jigin ani ka doni datugu . Aw bɛ a sugandi girinw kɔrɔtaminɛnw kama, mobili kurunw, jakiw walima pressew kama, fanga dɔgɔyali nafa ka bon yɔrɔ minnu na nka doni ka kan ka minɛ ka ɲɛ.

• Float-Center (Y): Aw bɛ Y suguya sugandi ni actuator ka kan ka free-fall walima coast in neutral, o bɛɛ n’a ta aw b’a fɛ ka aw yɛrɛ tanga degun jiginni ma. A ka ca winɛgiriw la, jiginɛw la, walima float/float (hold-down) baara suguya bɛɛ la.

Cɛmancɛ-yɔrɔ kelen-kelen bɛɛ ye jago ye, o la aw bɛ fanga baara (pɔnpe jigincogo) , doni kɔlɔsili (actuator lock vs float) , ani sistɛmu dinamiki (shock, manual override) jateminɛ ni aw bɛ directional valve center baarakɛcogo ɲɛfɔ. Tuma caman na, sistɛmu sabatili bɛ se ka bonya ni sumanmugu cɛmancɛ baarakɛcogo faralen ye ɲɔgɔn kan ni fɛn wɛrɛw ye (balance walima minɛyɔrɔw) i n’a fɔ a mago bɛ cogo min na.

Ɲininkaliw

J: Baara min bɛ kɛ cɛmancɛ jɔyɔrɔ (neutre) la directionnel control valve kɔnɔ, o ye mun ye?
Directionnel control valve ka cɛmancɛ jɔyɔrɔ baarakɛcogo (a bɛ fɔ fana ko neutre position) bɛ tali kɛ valve ka portw bɛ ɲɔgɔn sɔrɔ cogo min na ni spool bɛ cɛmancɛ la (actuation tɛ). A bɛ dakun minnu ɲɛfɔ (degun P , tanki T , ani baarakɛyɔrɔw A/B ) minnu dabɔlen don walima minnu datugulen don neutre la. O cogoyaw (minnu tɔgɔ ye ko O, H, M, Y) b’a jira ni tulu bɛ woyo ka taa jidagayɔrɔ la, ni a bɛ degun minɛ, walima ni a bɛ tali kɛ baarakɛminɛn na, o bɛ nɔ bila pɔnpe jigincogo la ani ni baarakɛminɛnw kɛcogo ye jɔli la.

J: O, H, M, Y sɛbɛnniw kɔrɔ ye mun ye valve santiri baarakɛcogo la?
U ye izini kodew ye santiri kunbaba 4 labɛncogo la: O (Closed Center): kurunbonkarila bɛɛ datugulen don; H (Cɛmancɛ da wulilen): P→T ani A↔B da wulilen; M (Tandem): P→T da bε, A/B da bε; Y (Float Center): A/B→T da wulilen, P datugulen. Taamaʃyɛn kelen-kelen bɛɛ b’a jira ko kurunbonkarila minnu bɛ ɲɔgɔn na walima minnu datugulen don ni u tɛ fɛn wɛrɛ ye, o bɛ pɔnpe bolicogo ni silinda wulicogo walima a datugucogo jira.

J: O-suguya ni H-suguya santiri baarakɛcogo bɛ danfara cogo di?
O -type (closed-center) valve bɛ port bɛɛ datugu neutre kɔnɔ, o bɛ actuator datugu ani ka degun minɛ (a ka ɲi doni minɛni ma ani jɔli tigitigiw ma) nka a tɛ pɔnpe jigin dɔ H suguya (da wulilen cɛmancɛ) bɔlɔn bɛ P da wuli ka taa T la ani A da wuli ka taa B la, o la pɔnpe jibɔ bɛ fili tanki kɔnɔ (ka sistɛmu jigin) ani silinda bɛ pan doni kɔrɔ. Kuma surun na, O bɛ doni minɛ, H bɛ pɔnpe bolicogo jigin.

J: Tuma jumɛn na ne ka kan ka baara kɛ ni M-type (tandem) cɛmancɛ-minɛn ye?
Aw bɛ baara kɛ ni tandem-center (M-type) ye ni aw b’a fɛ ka pɔnpe jigin ani ka doni minɛ. M-santiriw kɔnɔ, P bɛ siri T la (ka pɔnpe jigin) ka sɔrɔ A/B bɛ to ka datugu (ka actuator datugu). O b’a to u ka ɲi kosɛbɛ masin gɛlɛnw walima lifatanw kama, fanga dɔgɔyali (pɔnpe jiginni) ani doni dacogo lakananen fila bɛɛ ka kan ka kɛ yɔrɔ minnu na.

J: Santiri baarakɛcogo bɛ nɔ bila fanga sɔrɔcogo la cogo di?
Santiri baarakɛcogo minnu bɛ pɔnpe jigin ka taa tanki la ni neutre ye (i n’a fɔ H- ni M-suguya) olu bɛ baarakɛcogo ɲɛ kosɛbɛ, bawo pɔnpe tɛ baara kɛ ni tansiyɔnba ye ni a tɛ baara la. O ni ɲɔgɔn cɛ, cɛmancɛ datugulen (O) walima santiri min bɛ panpan (Y) bɛ degun bila pɔnpe bɔli la (a tɛ jigin), o min bɛ fanga tiɲɛ i n’a fɔ funteni jɔli waati. O la, ni i ye doni jiginyɔrɔ sugandi, o bɛ se ka dɔ bɔ sɛnɛfɛnw/kuran ta la jiko siratigɛ la.

J: Yala jibolisira bɛ se ka doni minɛ ni neutre ye wa?
Ɔwɔ – nka ni santiri labɛncogo dɔrɔn ye min bɛ baarakɛyɔrɔw bali. O suguya ni M suguya valvew bɛ port A ni B datugu neutre la, o la actuator bɛ datugu ji la ani doni bɛ minɛ.  H-suguya ni Y-suguya bɛ a to actuator ka pan (u tɛ degun minɛ baarakɛyɔrɔw la), o la o santiriw tɛ se ka doni dɔ dɛmɛ u yɛrɛ kɔnɔ neutre jukɔrɔ.