Valavu yotulutsa mfuti yayikulu 708-1W-04850

Monga valavu yotsitsa ngati chowongolera chakutali:

Valve yapamwamba komanso yotsika kwambiri yowongolera ma multistage imagwiritsidwa ntchito ngati valavu yotsatizana kuti ipangitse kukakamiza kumbuyo (chingwe pamayendedwe obwerera mafuta).

Valavu yothandizira woyendetsa ili ndi magawo awiri: valavu yayikulu ndi valavu yoyendetsa. Mavavu oyendetsa ndege amafanana ndi ma valve oyendetsa mwachindunji, koma nthawi zambiri amakhala mipando yokhala ngati ma cone (kapena valavu ya mpira). Valavu yayikulu imatha kugawidwa m'magulu amodzi, awiri okhazikika komanso atatu okhazikika.

Pambuyo pofukula kwathunthu kwa PC200-6 hydraulic excavator, chipangizo chogwira ntchito chimatha kuzindikira zochita zosiyanasiyana, koma pampu yayikulu imatumiza phokoso losazolowereka.

Malinga ndi kusanthula koyambirira, akukhulupirira kuti pampu imachotsedwa kapena dera lamafuta limasakanizidwa ndi mpweya. Choncho, choyamba sinthani chipangizo chogwirira ntchito kuti chizindikire kuchuluka kwa mafuta, ndipo fufuzani kuti mafuta a tank hydraulic ali pansi pa mlingo wochepa wa mafuta omwe amawunikira, omwe ndi malo akusowa kwa mafuta. Pambuyo pofunsa dalaivala, mphete yosindikizira ya chitoliro chamafuta othamanga kwambiri chopita kuchipinda chopanda ndodo cha silinda ya ndowa idasinthidwa chifukwa cha kutayikira kwamafuta panthawi yantchito, koma kuchuluka kwamafuta sikunayang'anitsidwe pakapita nthawi. Choncho, choyamba, thanki yamafuta a hydraulic imawonjezeredwa ku mlingo wamafuta, ndipo mayesero amasonyeza kuti phokoso losazolowereka limachepetsedwa, koma likadalipo; Kenaka, kupyolera mu valavu yaikulu yotulutsa mpope kupita ku mpope waukulu pambuyo poyesanso, amapezeka kuti phokoso losazolowereka likadalipo, kusonyeza kuti phokosolo silingathe kuyambitsidwa kwathunthu ndi kupopera kwapampu.

Kenako, fyuluta yoyamwa mafuta ndi sefa yobwereranso yamafuta a tanki ya hydraulic imawunikidwa, ndipo amapezeka kuti fyuluta yoyamwa mafuta ndi yakuda ndipo pali matope amafuta, ndipo tinthu tating'onoting'ono tazitsulo tabulauni timakakamira pa fyuluta yobwezeretsa mafuta. Poganizira kuti pali tinthu tating'ono ting'onoting'ono tomwe timakakamira pa fyuluta yamafuta obwerera, mafuta a pampu yayikulu amamasulidwa ndikuwunikiridwa, ndipo amapezeka kuti palinso zitsulo zofiirira; Panthawi imodzimodziyo, pamene pampu yayikulu idasokonekera ndikuwunikiridwa, zidapezeka kuti pisitoni, mbale ya valve ndi mbale ya swash sizinawonongeke, ndipo nsapato ya slipper idavala. Pambuyo pake, msonkhanowo unachitika motsatira zofunikira, makina a hydraulic anatsukidwa ndipo mafuta anasinthidwa, ndipo makina oyesera atayambiranso, phokoso losazolowereka linatha ndipo vutolo linathetsedwa.

Nthawi zonse, zomwe zingayambitse phokoso lachilendo kuzungulira pampu yayikulu ndi izi:

Mafuta osakwanira a hydraulic amachititsa kuti pampu yayikulu ikhale yopanda kanthu; Mpweya umasakanikirana mu mzere woyamwa; Chotchinga chosefera chimatsogolera pakuyamwa kwapampu yayikulu; Kuvala mkati mwa mpope waukulu kumayambitsa phokoso lachilendo pakugwira ntchito kwa mpope waukulu.

Pamenepa, phokoso lachilendo limayamba chifukwa cha mafuta osakwanira a hydraulic ndi kuvala kwa slipper mkati mwa mpope waukulu. Chifukwa chake ndi chakuti mlingo wa mafuta suyang'aniridwa mu nthawi pambuyo pa kusintha kwa chisindikizo, zomwe zimapangitsa kuti pakhale mafuta osakwanira a hydraulic, kotero kuti pampu yaikulu imatulutsa chodabwitsa; Pamene mafuta osakanikirana ndi mpweya amayenda pampopi yaikulu, slipper sangathe kuyandama kapena kuyandama mopanda nthawi zina, zomwe zimapangitsa kuti pakhale filimu yabwino yopaka mafuta pakati pa slipper ndi mbale ya swash, zomwe zimapangitsa kuti slipper azivala ndipo pamapeto pake zimayambitsa. phokoso lachilendo pakugwira ntchito kwa mpope waukulu