Nyengo ikayamba kuzizira, mwina simungadandaule kwambiri za kukwera kwa kutentha kwamafuta, koma chowonadi ndichakuti makina aliwonse amtundu wa hydraulic opitilira madigiri 140 amatentha kwambiri.Dziwani kuti moyo wamafuta umakhala ndi theka pa madigiri 18 aliwonse pamwamba pa 140 madigiri.Machitidwe omwe amagwira ntchito kutentha kwambiri amatha kupanga matope ndi varnish, zomwe zingapangitse mapulagi a valve kumamatira.
Mapampu ndi ma hydraulic motors amadutsa mafuta ochulukirapo pakatentha kwambiri, zomwe zimapangitsa makinawo kuti azithamanga kwambiri.Nthawi zina, kutentha kwambiri kwamafuta kumapangitsa kuti mphamvu iwonongeke, zomwe zimapangitsa kuti pampu yoyendetsa galimoto ifike pakalipano kuti iyendetse dongosolo.O-mphete amaumitsanso pa kutentha kwakukulu, kuchititsa kuchucha kwambiri mu dongosolo.Ndiye, ndi macheke ndi mayeso ati omwe ayenera kuchitidwa pa kutentha kwamafuta kuposa madigiri a 140?
Dongosolo lililonse la hydraulic limapanga kutentha kwina.Pafupifupi 25% yamagetsi amagetsi adzagwiritsidwa ntchito kuthana ndi kutayika kwa kutentha mudongosolo.Nthawi zonse mafuta akabwezedwa m'nkhokwe ndipo sakugwira ntchito, kutentha kumatuluka.
Kulekerera mu mapampu ndi mavavu nthawi zambiri kumakhala mkati mwa magawo khumi a inchi.Kulekerera uku kumapangitsa kuti mafuta pang'ono azidutsa mosalekeza m'zigawo zamkati, zomwe zimapangitsa kutentha kwamadzimadzi kukwera.Pamene mafuta akuyenda m'mizere, amakumana ndi zotsutsa zingapo.Mwachitsanzo, zowongolera zoyenda, ma valve ofananira, ndi ma servo valves amawongolera kuchuluka kwamafuta poletsa kuyenda.Pamene mafuta akudutsa mu valve, "kutsika kwapakati" kumachitika.Izi zikutanthauza kuti kuthamanga kwa valve yolowera ndikwapamwamba kuposa kutulutsa kwamagetsi.Nthawi zonse mafuta akamayenda kuchokera kumphamvu kwambiri kupita kutsika, kutentha kumatulutsidwa ndikumwedwa ndi mafuta.
Pakukonza koyambirira kwa dongosololi, miyeso ya thanki ndi chotenthetsera kutentha idapangidwa kuti ichotse kutentha komwe kumapangidwa.Malo osungiramo madzi amalola kutentha kwina kudutsa m'makoma kupita kumlengalenga.Ikakula bwino, chotenthetseracho chiyenera kuchotsa kutentha kwapakati, kulola kuti makinawo azigwira ntchito pa kutentha pafupifupi madigiri 120 Fahrenheit.
Chithunzi 1. Kulekerera pakati pa pisitoni ndi silinda ya pampu yolipiridwa yolipiridwa yothamangitsidwa ndi pafupifupi 0.0004 in.
Mtundu wodziwika bwino wa pampu ndi pampu ya pistoni yolipiridwa.Kulekerera pakati pa pisitoni ndi silinda ndi pafupifupi mainchesi 0.0004 (Chithunzi 1).Mafuta ang'onoang'ono omwe amachoka pampope amagonjetsa zololerazi ndikulowa m'kati mwa mpope.Kenako mafutawo amabwereranso mu thanki kudzera mumtsinje wa crankcase drain.Kukhetsa mtsinje pankhaniyi sikugwira ntchito yothandiza, chifukwa chake imasinthidwa kukhala kutentha.
Kuthamanga kwanthawi zonse kuchokera ku chingwe cha crankcase ndi 1% mpaka 3% ya voliyumu yayikulu ya mpope.Mwachitsanzo, pampu ya 30 GPM (gpm) iyenera kukhala ndi 0.3 mpaka 0.9 GPM yamafuta obwerera ku thanki kudzera mumtsinje wa crankcase.Kuwonjezeka kwakukulu kwa kayendedwe kameneka kudzapangitsa kuwonjezeka kwakukulu kwa kutentha kwa mafuta.
Kuti muyese kuyenda, mzere ukhoza kumezeredwa pachombo chodziwika kukula ndi nthawi (Chithunzi 2).Osagwira mzere pamayesowa pokhapokha mutatsimikizira kuti kukakamiza kwa payipi kuli pafupi ndi 0 pounds per square inch (PSI).M'malo mwake, chitetezeni mu chidebe.
Makina olowera amathanso kuyikika mumzere wa crankcase drain kuti azitha kuyang'anira kuyenda.Kuyang'ana kowoneka kumeneku kutha kuchitika nthawi ndi nthawi kuti mudziwe kuchuluka kwa njira yodutsa.Pampu iyenera kusinthidwa pamene mafuta afika 10% ya voliyumu ya mpope.
Pampu yokhazikika yolipiridwa yolipiridwa yosinthira ikuwonetsedwa mu Chithunzi 3. Pantchito yanthawi zonse, kukakamiza kwa dongosolo kumakhala pansi pa chigawo cha compensator (1200 psi), akasupe amakhala ndi swashplate yamkati pamtunda wake waukulu.Izi zimathandiza pisitoni kusuntha kwathunthu mkati ndi kunja, kulola kuti pampu ipereke voliyumu yayikulu.Kuthamanga kwa pompopompo kumatsekedwa ndi spool ya compensator.
Kupanikizika kumangowonjezereka mpaka 1200 psi (mkuyu 4), compensator spool imasuntha, kuwongolera mafuta mu silinda yamkati.Pamene silinda ikuwonjezedwa, ngodya ya washer imayandikira malo oima.Pampuyo ipereka mafuta ochulukirapo momwe amafunikira kuti asungidwe kasupe 1200 psi.Kutentha kokhako komwe kumapangidwa ndi mpope panthawiyi ndi mafuta omwe amadutsa mu piston ndi crankcase pressure line.
Kuti mudziwe kuchuluka kwa kutentha kwa pampu ikalipidwa, gwiritsani ntchito njira iyi: Horsepower (hp) = GPM x psi x 0.000583.Kungoganiza kuti mpope ikupereka 0.9 gpm ndipo cholumikizira chokulitsa chimayikidwa ku 1200 psi, kutentha komwe kumapangidwa ndi: HP = 0.9 x 1200 x 0.000583 kapena 0.6296.
Malingana ngati makina ozizira ndi osungira amatha kujambula osachepera 0.6296 hp.kutentha, kutentha kwa mafuta sikudzauka.Ngati mlingo wodutsa ukuwonjezeka kufika ku 5 GPM, kutentha kumawonjezeka kufika pa 3.5 akavalo (hp = 5 x 1200 x 0.000583 kapena 3.5).Ngati chozizira ndi chosungira sichingachotse mphamvu zosachepera 3.5 za kutentha, kutentha kwamafuta kumakwera.
Mpunga.2. Yang'anani kayendedwe ka mafuta pogwirizanitsa chingwe cha crankcase ku chidebe cha kukula kodziwika ndikuyesa kutuluka kwake.
Mapampu ambiri omwe amalipidwa ndi mphamvu amagwiritsa ntchito valavu yopumira ngati chosungira ngati spool ya compensator itatsekeka.Kuyika kwa vavu yopumula kuyenera kukhala 250 PSI pamwamba pa chowongolera chowongolera.Ngati valavu yothandizira yayikidwa pamwamba kuposa momwe amachitira compensator, palibe mafuta omwe amayenera kudutsa mu spool ya valve yothandizira.Choncho, mzere wa thanki wopita ku valve uyenera kukhala kutentha kozungulira.
Ngati compensator yakhazikika pamalo omwe akuwonetsedwa mkuyu.3, mpope nthawi zonse ipereka voliyumu yayikulu.Mafuta ochulukirapo osagwiritsidwa ntchito ndi dongosolo amabwerera ku thanki kudzera mu valve yothandizira.Pankhaniyi, kutentha kwambiri kudzatulutsidwa.
Nthawi zambiri kupanikizika m'dongosolo kumasinthidwa mwachisawawa kuti makinawo azichita bwino.Ngati chowongolera cham'deralo chokhala ndi knob chiyika chiwongolero cha compensator pamwamba pa valavu yothandizira, mafuta ochulukirapo amabwerera kudzera mu valve yothandizira kupita ku thanki, zomwe zimapangitsa kutentha kwamafuta kukwera ndi madigiri 30 kapena 40.Ngati compensator sasuntha kapena ayikidwa pamwamba pa valavu yothandizira, kutentha kwakukulu kungathe kupangidwa.
Poganiza kuti mpopeyo ili ndi mphamvu yaikulu ya 30 gpm ndipo valve yothandizira imayikidwa ku 1450 psi, kuchuluka kwa kutentha komwe kumapangidwa kungathe kudziwika.Ngati injini yamagetsi ya 30 horsepower (hp = 30 x 1450 x 0.000583 kapena 25) idagwiritsidwa ntchito kuyendetsa dongosolo, mahatchi 25 amatha kusinthidwa kuti atenthe popanda ntchito.Popeza ma watt 746 akufanana ndi mahatchi amodzi, mawati 18,650 (746 x 25) kapena ma kilowati 18.65 amagetsi adzawonongeka.
Ma valve ena omwe amagwiritsidwa ntchito m'dongosololi, monga ma valve otayira batire ndi ma valve okhetsa magazi, sangatsegule ndikulola kuti mafuta adutse thanki yothamanga kwambiri.Mzere wa thanki wa mavavuwa uyenera kukhala pa kutentha kozungulira.Chinthu chinanso chomwe chimayambitsa kutentha ndikudutsa zisindikizo za cylinder piston.
Mpunga.3. Chiwerengerochi chikuwonetsa pampu yolipidwa yolipiridwa yosinthira nthawi yanthawi zonse.
Mpunga.4. Samalani zomwe zimachitika ku spool compensator spool, silinda yamkati, ndi mbale ya swash pamene kuthamanga kumawonjezeka kufika pa 1200 psi.
Chotenthetsera chotenthetsera kapena chozizira chiyenera kuthandizidwa kuonetsetsa kuti kutentha kochulukirapo kumachotsedwa.Ngati chotenthetsera cha mpweya ndi mpweya chikugwiritsidwa ntchito, zipsepse zozizirazi ziyenera kutsukidwa nthawi ndi nthawi.Degreaser ingafunike kuyeretsa zipsepse.Kusintha kwa kutentha komwe kumayatsa fan yozizirirako kumayenera kukhazikitsidwa ku madigiri 115 Fahrenheit.Ngati choziziritsa chamadzi chikugwiritsidwa ntchito, valavu yowongolera madzi iyenera kuyikidwa mupaipi yamadzi kuti iwongolere kuthamanga kwa chitoliro chozizira mpaka 25% yamafuta oyenda.
Thanki yamadzi iyenera kutsukidwa kamodzi pachaka.Apo ayi, silt ndi zonyansa zina sizidzaphimba pansi pa thanki, komanso makoma ake.Izi zidzalola kuti thanki igwire ntchito ngati chofungatira m'malo motaya kutentha kumlengalenga.
Posachedwapa ndinali ku fakitale ndipo kutentha kwa mafuta pa stacker kunali madigiri 350.Zinapezeka kuti kupanikizika kunali kosakwanira, valavu ya hydraulic accumulator manual relief valve inali yotseguka pang'ono, ndipo mafuta amaperekedwa mosalekeza kudzera muzitsulo zoyendetsa, zomwe zinayambitsa hydraulic motor.Makina otsitsa oyendetsedwa ndi injini amagwira ntchito nthawi 5 mpaka 10 pakusintha kwa maola 8.
Pulojekiti ya pampu ndi valve yothandizira imayikidwa bwino, valavu yamanja imatsekedwa, ndipo wogwiritsa ntchito magetsi amatulutsa mphamvu ya valve way valve, kutseka kutuluka kwa kayendedwe ka kayendedwe kake.Zidazo zitafufuzidwa patatha maola 24, kutentha kwamafuta kunatsika kufika madigiri 132 Fahrenheit.Zoonadi, mafuta alephera ndipo dongosolo liyenera kutsukidwa kuti lichotse matope ndi varnish.Chigawocho chiyeneranso kudzazidwa ndi mafuta atsopano.
Mavuto onsewa amapangidwa mwachinyengo.Othandizira crank am'deralo adayika compensator pamwamba pa valavu yothandizira kuti voliyumu ya mpope ibwerere kumalo osungiramo mphamvu pomwe palibe chomwe chikuyenda panjira.Palinso anthu omwe sangathe kutseka valavu yamanja, kuti mafuta abwererenso mu thanki yothamanga kwambiri.Kuonjezera apo, dongosololi linali losakonzedwa bwino, zomwe zimapangitsa kuti unyolo ugwire ntchito mosalekeza pamene umayenera kutsegulidwa pamene katunduyo amayenera kuchotsedwa pa stacker.
Nthawi yotsatira mukakhala ndi vuto la kutentha mu imodzi mwa machitidwe anu, yang'anani mafuta omwe akuyenda kuchokera kumagetsi apamwamba kupita kumunsi.Apa mutha kupeza zovuta.
Kuyambira 2001, DONGXU HYDRAULIC wapereka maphunziro a hydraulics, kufunsira ndi kuwunika kudalirika kwamakampani omwe ali pantchito.
Foshan Nanhai Dongxu Hydraulic Machinery Co., Ltd. ili ndi mabungwe atatu: Jiangsu Helike Fluid Technology Co., Ltd., Guangdong Kaidun Fluid Transmission Co., Ltd., ndi Guangdong Bokade Radiator Material Co., Ltd.
Kampani yogwira ya Foshan Nanhai Dongxu Hydraulic Machinery Co., Ltd.: Ningbo Fenghua No. 3 Hydraulic Parts Factory, etc.
Malingaliro a kampani Foshan Nanhai Dongxu Hydraulic Machinery Co., Ltd.
&Malingaliro a kampani Jiangsu Helike Fluid Technology Co., Ltd.
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Nthawi yotumiza: May-26-2023