I-jack yemoto iyindlela ekhethekile evumela ukuthi wenze ukulungiswa okujwayelekile kweloli noma imoto ezimweni lapho lokhu kulungiswa kufanele kwenziwe ngaphandle kokusekela imoto ngamasondo, kanye nokushintsha amasondo ngqo endaweni yokuphuka noma ukuma. .Ukunethezeka kwejack yesimanje kusekuhambeni kwayo, isisindo esiphansi, ukwethembeka kanye nokulula kokugcinwa.
Imvamisa, ama-jack asetshenziswa abashayeli bezimoto namaloli, amabhizinisi ezokuthutha (ikakhulukazi amaqembu abo eselula), izinsizakalo zemoto kanye nokufakwa kwamasondo.
Izici eziyinhloko
Umthamo womthwalo (ophawulwe ngamakhilogremu noma amathani) yisisindo esiphezulu somthwalo ujeke ongawuphakamisa.Ukuze unqume ukuthi i-jack ikufanele yini ukuphakamisa le moto, kuyadingeka ukuthi umthamo wayo wokuthwala ungabi ngaphansi kwalowo wejack ejwayelekile noma okungenani ube ngu-1/2 wesisindo semoto.
Isiteji sokusekela siyingxenye ephansi yokusekela yejack.Ivamise ukuba nkulu kunengxenye ethwele engaphezulu ukuze inikeze ukucindezela okuncane okuqondile endaweni ethwalayo ngangokunokwenzeka, futhi ihlinzekwa ngama-protrusions "e-spike" ukuvimbela ujeke ukuthi ushelelezi endaweni yokusekela.
I-Pickup iyingxenye yejekhi eklanyelwe ukuphumula emotweni noma umthwalo ophakanyisiwe.Kuma-screw noma ama-rack Jack amamodeli amadala ezimoto zasekhaya, iyinduku egoqayo, kwabanye, njengomthetho, ibakaki eliqinile eliqinile (isithende esiphakamisayo).
Ubude obuncane (obokuqala) bokuthatha (Niminithi)- ibanga elincane eliqondile ukusuka endaweni yokusekela (umgwaqo) ukuya endaweni yokulanda endaweni yayo yokusebenza ephansi.Ubude bokuqala kufanele bube buncane ukuze ijeke ingene phakathi kweplathifomu yokusekela nezinto ezilengayo noma zomzimba.
Ukuphakama okuphezulu kokuphakama (N.ubuningi)- ibanga eliqondile elikhulu kakhulu ukusuka kuplathifomu yokusekela ukuya ekuthathweni lapho uphakamisa umthwalo uwumise ekuphakameni okuphelele.Inani elinganele le-Hmax ngeke livumele ujeke ukuthi usetshenziselwe ukuphakamisa izimoto noma ama-trailer lapho ujeke isendaweni ephakeme.Uma kungekho ukuphakama, ama-spacer cushions angasetshenziswa.
Ubukhulu be-jack stroke (L.ubuningi)- ukunyakaza okume mpo okukhulu kakhulu kweveni ukusuka phansi kuya endaweni ephezulu.Uma i-stroke esebenzayo inganele, i-jack ingase "ingadabuki" isondo emgwaqeni.
Kunezinhlobo eziningana zamajack, ezihlukaniswa ngokusho kohlobo lokwakhiwa:
1.Ama-Screw Jack
2.Ama-Rack nama-pinion Jacks
3.Ojekhi beHydraulic
4.Ojekhi bomoya
1. Izikulufo ojeke
Kunezinhlobo ezimbili ze-screw car Jacks - telescopic kanye ne-rhombic.Ama-Screw Jack athandwa ngabashayeli bezimoto.Ngesikhathi esifanayo, ama-jacks e-rhombic, amandla okuthwala ahluka kusuka ku-0.5 kuya ku-3 amathani, athandwa kakhulu ngabanikazi bezimoto futhi avame ukufakwa kusethi yamathuluzi omgwaqo ajwayelekile.Amajekhi e-Telescopic anamandla okuthwala afinyelela kumathani ayi-15 abalulekile ezimotweni zeSUV ne-LCV zezinhlobo ezahlukahlukene.
Ingxenye eyinhloko ye-screw jack iyisikulufu esinenkomishi ethwala umthwalo enamahinge, eshayelwa isibambo.Indima yezinto ezithwala imithwalo yenziwa umzimba wensimbi nesikulufu.Kuye ngesiqondiso sokuzungezisa isibambo, isikulufu siphakamisa noma sehlise inkundla yokuthatha.Ukubamba umthwalo endaweni oyifunayo kwenzeka ngenxa ye-braking of screw, okuqinisekisa ukuphepha komsebenzi.Ukunyakaza okuvundlile komthwalo, i-jack esihlibhini esifakwe isikulufa isetshenziswa.Umthamo wokulayisha wama-screw Jack ungafinyelela amathani ayi-15.
Izinzuzo eziyinhloko zama-screw Jacks:
● i-stroke ephawulekayo yokusebenza nokuphakama kokuphakamisa;
● isisindo esincane;
● Intengo ephansi.
Ama-Screw Jacks
I-screw jack ithembekile ekusebenzeni.Lokhu kungenxa yokuthi umthwalo ulungiswa ngentambo ye-trapezoidal, futhi lapho uphakamisa umthwalo, i-nut ijikeleza ingenzi lutho.Ngaphezu kwalokho, izinzuzo zalawa mathuluzi zihlanganisa amandla nokuzinza, kanye neqiniso lokuthi bangasebenza ngaphandle kokuma okwengeziwe.
2. Ojeke kanye nama-pinion Jacks
Ingxenye eyinhloko ye-rack jack iyinsimbi yensimbi ethwala umthwalo enenkomishi yokusekela umthwalo.Isici esibalulekile se-rack jack yindawo ephansi yesikhulumi sokuphakamisa.Ingxenye engezansi yesitimela (i-paw) ine-engeli elungile yokuphakamisa imithwalo ngendawo yokusekela ephansi.Umthwalo ophakanyiswe kumzila wesitimela uphethwe yimishini yokukhiya.
2.1.I-Lever
I-rack inwetshwa nge-swinging drive lever.
2.2.Nginamazinyo
Ku-gear Jacks, i-drive lever ishintshwa igiya, elizungeza ku-gearbox lisebenzisa isibambo sokushayela.Ukuze umthwalo uqiniswe ngokuphephile endaweni ethile futhi endaweni oyifunayo, elinye lamagiya lifakwe indlela yokukhiya - i-ratchet ene "pawl".
Ama-rack kanye nama-pinion jacks
Ama-rack Jacks anamandla okuthwala amathani angu-6 anebhokisi le-gearbox elilodwa, kusukela kumathani angu-6 kuye kwayi-15 - izigaba ezimbili, amathani angaphezu kuka-15 - izigaba ezintathu.
Ama-jacks anjalo angasetshenziswa kokubili aqondile futhi avundlile, kulula ukuwasebenzisa, alungiswe kahle futhi ayithuluzi lomhlaba wonke lokuphakamisa nokulungisa impahla.
3. Ojekhi beHydraulic
Amajekhi angamaHydraulic, njengoba negama libonisa, asebenza ngokucindezela uketshezi.Izakhi ezithwala umthwalo eziyinhloko umzimba, i-piston ekhishwayo (i-plunger) kanye noketshezi olusebenzayo (imvamisa uwoyela we-hydraulic).Indlu ingaba kokubili isilinda somhlahlandlela wepiston kanye nedamu loketshezi olusebenzayo.Ukuqiniswa okuvela kusibambo sedrayivu kudluliselwa nge-lever kuya kupompo yokukhipha.Lapho ukhuphukela phezulu, uketshezi oluvela endaweni yokugcina amanzi lufakwa emgodini wepompo, futhi uma lucindezelwa, luphonswa emgodini wesilinda esisebenzayo, lwelule i-plunger.Ukugeleza okubuyela emuva koketshezi kuvinjelwa ama-valve okumunca nokukhipha.
Ukuze wehlise umthwalo, inaliti yokuvala i-valve ye-bypass ivuliwe, futhi uketshezi olusebenzayo luphoqeleka ukuba luphume emgodini wesilinda esisebenzayo lubuyele ethangini.
Amajekhi we-Hydraulic
Izinzuzo zamajekhi we-hydraulic zifaka:
● umthamo omkhulu womthwalo - kusuka kumathani angu-2 kuya kwangu-200;
● ukuqina kwesakhiwo;
● ukuzinza;
● ubushelelezi;
● ukubumbana;
● amandla amancane kusibambo sedrayivu;
● ukusebenza kahle okuphezulu (75-80%).
Okubi kuhlanganisa:
● ukuphakama okuncane kokuphakamisa emjikelezweni owodwa wokusebenza;
● ubunkimbinkimbi bomklamo;
● akunakwenzeka ukulungisa ubude bokwehlisa ngokunembile;
● Ojeke abanjalo bangabangela ukuwohloka okukhulu kakhulu kunemishini yokuphakamisa imishini.Ngakho-ke, kunzima kakhulu ukulungisa.
Kunezinhlobo eziningana zamajekhi we-hydraulic.
3.1.Izigqoko zebhodlela zakudala
Enye yezinhlobo eziguquguqukayo nezifaneleka kakhulu ujeke webhodlela wenduku eyodwa (noma i-single-plunger).Ngokuvamile, ama-jacks anjalo ayingxenye yamathuluzi omgwaqo ajwayelekile amaloli amakilasi ahlukahlukene, kusukela ezimotweni zezentengiselwano ezinamathani alula kuya ezitimeleni zemigwaqo emikhulu, kanye nemishini yokwakha imigwaqo.I-jack enjalo ingasetshenziswa njengeyunithi yamandla yokunyathelisa, ama-bender amapayipi, abasiki bepayipi, njll.
I-Telescopic
ojeke
3.2.Amajekhi e-Telescopic (noma ama-double-plunger).
Ihluke ku-single-rod kuphela ngokuba khona kwenduku ye-telescopic.Ama-jack anjalo akuvumela ukuthi uphakamise umthwalo endaweni ephakeme kakhulu, noma unciphise ukuphakama kweveni, ngenkathi ugcina ukuphakama okuphezulu kokuphakamisa.
Ziyakwazi ukuthwala amathani amabili kuya kwayikhulu noma ngaphezulu.Indlu iyisilinda esiwumhlahlandlela we-plunger kanye nechibi loketshezi olusebenzayo.Isithende esiphakamisayo samajekhi anamandla okuthwala afinyelela kumathani angama-20 sitholakala phezulu kwesikulufu esifakwe ku-plunger.Lokhu kuvumela, uma kunesidingo, ngokukhulula isikulufu, ukwandisa ukuphakama kokuqala kwejekhi.
Kunemiklamo yamajekhi asebenza ngogesi, lapho injini kagesi exhunywe kunethiwekhi yemoto esebhodini, noma idrayivu yomoya, isetshenziswa ukushayela iphampu.
Lapho ukhetha i-jack yebhodlela le-hydraulic, kubalulekile ukucabangela hhayi kuphela umthamo wayo wokuthwala, kodwa futhi nokuthatha nokuphakamisa ukuphakama, njengoba ukushaywa okusebenzayo okunamandla okwanele okuthwala kungase kunganele ukuphakamisa imoto.
Amajekhi angamaHydraulic adinga ukuqapha izinga le-fluid, isimo nokuqina kwezimpawu zikawoyela.
Ngokusetshenziswa okungavamile kwama-jack anjalo, kunconywa ukuthi ungaqinisi indlela yokukhiya kuze kube sekupheleni ngesikhathi sokugcina.Umsebenzi wabo ungenzeka kuphela endaweni eqondile futhi kuphela (njenganoma yimaphi ama-jack hydraulic) wokuphakamisa, hhayi ukubamba umthwalo isikhathi eside.
3.3.Ama-Rolling Jacks
Ama-Rolling Jacks angumzimba ophansi onamasondo, lapho i-lever enesithende esiphakamisayo iphakanyiswa yi-cylinder ye-hydraulic.Ukusebenziseka kalula komsebenzi kwenziwa amapulatifomu akhiphekayo ashintsha ubude bokucosha nokuphakamisa.Akufanele kukhohlwe ukuthi indawo eyisicaba futhi eqinile iyadingeka ukuze usebenze nge-rolling jack.Ngakho-ke, lolu hlobo lwama-jack, njengomthetho, lusetshenziswa ezinsizeni zezimoto nezitolo zamasondo.Okuvame kakhulu ojeke abanamandla okuthwala amathani ama-2 kuye kwayi-5.
4. Ojekhi bomoya
Ama-Rolling Jacks
Ama-jacks we-pneumatic
Ama-jacks we-pneumatic abalulekile esimweni segebe elincane phakathi kokusekela nomthwalo, ngokunyakaza okuncane, ukufakwa okunembile, uma umsebenzi uzokwenziwa endaweni evulekile, engalingani noma engamaxhaphozi.
Ijekhi ye-pneumatic iyigobolondo lenjoloba eliyisicaba elenziwe ngendwangu ekhethekile eqinisiwe, ekhuphuka ngokuphakama lapho umoya ocindezelweyo (igesi) unikezwa kuwo.
Umthamo wokuthwala wejack ye-pneumatic unqunywa ingcindezi yokusebenza kudrayivu ye-pneumatic.Ojekhi bomoya bafika ngosayizi abaningana namandla omthwalo ahlukene, ngokuvamile amathani ama-3 – 4 – 5.
Ububi obukhulu bamajekhi womoya yizindleko zabo eziphakeme.Kuthonywa ubunkimbinkimbi obuhlobene bomklamo, ikakhulukazi obuhlotshaniswa nokubekwa uphawu kwamalunga, ubuchwepheshe obubizayo bokwenza amagobolondo avaliwe futhi, ekugcineni, amaqoqo amancane okukhiqizwa kwezimboni.
Izici ezibalulekile lapho ukhetha i-jack:
1.Umthamo wokuthwala yisisindo esiphezulu esingaba khona somthwalo okufanele uphakanyiswe.
2.Ukuphakama kokuqala kokuthathwa yibanga elincane kakhulu elikhona phakathi kwendawo yokuthwala kanye nephoyinti lokusekela lomshini endaweni yokusebenza ephansi.
3.Ukuphakama kokuphakama yibanga eliphezulu ukusuka endaweni esekelayo ukuya endaweni yokusebenza ephezulu, kufanele ikuvumele ukuthi ususe kalula noma yiliphi isondo.
4.I-pick-up ingxenye yomshini oklanyelwe ukuhlala phezu kwento ephakanyiswayo.Ama-rack amaningi nama-pinion jacks ane-pick-up eyenziwe ngendlela yenduku egoqayo (le ndlela yokubopha ayifaneleki kuzo zonke izimoto, ebeka umkhawulo wendawo yayo), kuyilapho ukuqoqwa kwe-hydraulic, i-rhombic namanye amamodeli kwenziwa. ngendlela yebakaki eqinile eqinile (isithende esiphakamisayo).
5.I-stroke esebenzayo - ukuhambisa i-pickup ibheke phezulu isuka kwephansi iye kwephezulu.
6.Isisindo sikajeke.
Imithetho yokuphepha lapho usebenza nojeke
Lapho usebenza nama-jacks, kuyadingeka ukulandela imithetho eyisisekelo yokuphepha lapho usebenza nama-jack.
Lapho ushintsha isondo futhi ngesikhathi somsebenzi wokulungisa ngokuphakamisa nokulenga imoto, kuyadingeka:
● lungisa amasondo ngakolunye uhlangothi lwejekhi kuzo zombili izinhlangothi ukuze ugweme ukuba imoto ihlehle futhi iwe isuka kujeke noma isitendi.Ukuze wenze lokhu, ungasebenzisa izicathulo ezikhethekile;
● Ngemva kokuphakamisa umzimba ekuphakameni okudingekayo, kungakhathaliseki ukuthi umklamo we-jack, faka ukuma okuthembekile ngaphansi kwezakhi ezithwala umthwalo womzimba (ama-sills, ama-spars, ifreyimu, njll.).Akuvunyelwe ngokuphelele ukusebenza ngaphansi kwemoto uma ku-jack kuphela!
Isikhathi sokuthumela: Jul-12-2023