Ukwahlulahlula iibulldozer, umzi-mveliso wamatyathanga wamaIndiya

Ukwahlulahlula iibulldozer, umzi-mveliso wamatyathanga wamaIndiya

I-Crawler dozer (ekwaziwa njenge-crawler dozer) yaphuhliswa ngempumelelo ngu-Benjamin Holt, umMelika, ngo-1904. Yasekwa ngokufakela ibhuldoza yokunyusa ngesandla phambi kwetrektara yokukhwela.Ngelo xesha, amandla yayiyinjini yomphunga.Kamva, kwaphuhliswa iidoza zokurhubuluza eziqhutywa ngamandla egesi yendalo kunye nenjini yepetroli.Iblade yebulldozer nayo yaphuhliswa ukusuka ekuphakamiseni ngesandla ukuya ekuphakamiseni iintambo zocingo.UBenjamin Holt wayengomnye wabaseki beCaterpillar Inc. eUnited States.Ngo-1925, iHolt Manufacturing Company kunye neC 50. Eyona Nkampani yeBulldozer yadityaniswa yenze iCaterpillar Bulldozer Company, yaba ngumenzi wokuqala wehlabathi wezixhobo zebulldozer, yaze yaseka ngempumelelo ibhetshi yokuqala yeebulldozer ezingama-60 ezineenjini zedizili ngo-1931. Ngenkqubela phambili eqhubekayo yobuchwepheshe. , ibulldozer inikwe amandla ziinjini zedizili, kwaye ibulldozer blade nescarifier zonke ziphakanyiswe ngamacylinder ahydraulic.Ukongeza kwiibhuldoza zohlobo lokukhasa, kukwakho nohlobo lweebhuldoza zohlobo lwamatayara, ezimalunga neminyaka elishumi emva koko kuneebhuludoza zohlobo lwesikhasi.Iibulldoza zeCrawler zisebenza ngcono ukuncamathela kwaye zinokutsaleka ngakumbi, ngoko ke iindidi kunye nobuninzi beemveliso zazo ekhaya naphesheya zingaphezulu lee kunezo zeebhuldoza zamatayara.Kumazwe ngamazwe, iCaterpillar yeyona nkampani inkulu yokwenza oomatshini bobunjineli emhlabeni.Iibulldozer zayo ze-caterpillar ziquka uchungechunge olukhulu, oluphakathi kunye noluncinci lwe-D3-D11, i-D11 RCD enkulu, kunye namandla e-flywheel ye-injini ye-diesel ifikelela kwi-634kw;IKomatsu, inkampani yaseJapan, ibekwe kwindawo yesibini.Ngomnyaka ka 1947, yaqala ukwazisa nokuvelisa iibulldozer ze D50 crawler.Kukho 13 series crawler bulldozers, ukusuka D21-D575, incinci D21, flywheel amandla injini yedizili 29.5kw, inkulu D575A-3SD, kwaye flywheel amandla injini yedizili 858kw.Ikwayeyona bulldozer inkulu ehlabathini ngoku;Omnye umenzi webulldozer owahlukileyo yiLiebheer Group yaseJamani.Iibulldozer zayo zonke ziqhutywa luxinzelelo lwe-hydrostatic.Emva kweminyaka engaphezu kweshumi yophando kunye nophuhliso, le teknoloji yazisa iprototype ngo-1972. Ngo-1974, yaqala ukuvelisa i-PR721-PR731 kunye ne-PR741 hydrostatic driven crawler bulldozers.Ngenxa yokucuthwa kwamacandelo e-hydraulic, amandla ayo aphezulu angama-295Kw kuphela, kwaye imodeli yayo yi-PR751 yemigodi.

Aba bathathu bangentla babenzi bebulldozer bamele elona nqanaba liphezulu leebhuldoza ezirhubuluzayo kwihlabathi namhlanje.Abanye abavelisi bangaphandle beebhuludoza ezikhasayo, abafana noJohn Deere, Case, New Holland kunye noDreista, nabo banezinga eliphezulu lobugcisa bokuvelisa.Umzi-mveliso wekhonkco laseIndiya
Ukuveliswa kweebulldozers eTshayina kwaqala emva kokusekwa kweNew China.Ekuqaleni, ibulldozer yafakwa kwitrekta yezolimo.Ngophuhliso loqoqosho lwesizwe, imfuno yeebhuldoza ezikhasa eziphakathi nendawo ezinkulu kwimigodi emikhulu, ukugcinwa kwamanzi, izikhululo zamandla kunye namasebe ezothutho ziyanda.Nangona ishishini lemveliso yeebhuldoza ezikhasayo eziphakathi nezinkulu eTshayina lenze inkqubela enkulu, alisenakukwazi ukuhlangabezana neemfuno zophuhliso loqoqosho lwesizwe.Ke ngoko, ukusukela ngo-1979, i-China iye yazisa ngokulandelelanayo itekhnoloji yemveliso, iinkcukacha zenkqubo, imigangatho yobugcisa kunye neenkqubo zemathiriyeli ze-bulldozer ezikhasayo ezivela kwiNkampani yaseKomatsu yaseJapan kunye neNkampani yeCaterpillar yase-United States.Emva kokutyiswa kunye nokufunxa, kunye nobuchwepheshe obuphambili bajongwa, ipateni elawulwa yi-Komatsu yeemveliso zeteknoloji kwiminyaka ye-1980 kunye ne-1990s yaqulunqwa.Umzi-mveliso wekhonkco laseIndiya

Ukusukela ngeminyaka yee-1960s, bekukho malunga nabavelisi abane kushishino lwebulldozer yasekhaya.Isizathu kukuba iimfuno zokusetyenzwa kweemveliso ze-bulldozer ziphezulu, ubunzima bukhulu, kwaye imveliso yobuninzi ifuna utyalo-mali olukhulu.Ke ngoko, amashishini aqhelekileyo akafuni kubandakanyeka ngokulula.Nangona kunjalo, kunye nophuhliso lwemarike, ukususela "kwiSicwangciso seMinyaka yeSibhozo", amanye amashishini amakhulu kunye naphakathi e-China aqalisile ukusebenzisana iibulldozers ngokwamandla abo, njenge-Inner Mongolia No.1 Machinery Factory, Xuzhou. Umzi-mveliso we-Loader, njl., kwaye wandise iqela leshishini le-bulldozer.Kwangaxeshanye, inani elincinci lamashishini laqala ukuhla ngenxa yolawulo olulambathayo kunye nesidingo sokuziqhelanisa nophuhliso lwemarike, kwaye abanye baye barhoxa kushishino.Okwangoku, abavelisi bebulldozer basekhaya ikakhulu babandakanya iShantui Construction Machinery Co., Ltd., Hebei Xuanhua Construction Machinery Co., Ltd., Shanghai Pengpu Machinery Factory Co., Ltd., Tianjin Construction Machinery Factory, Shaanxi Xinhuang Industrial Machinery Co., Ltd. ., Yituo Construction Machinery Co., Ltd., njl. Ukongeza kwimveliso yeebulldozers, ezi nkampani zingasentla zaqala ukubandakanyeka kwimveliso yezinye iimveliso zoomatshini bokwakha, njengeShantui, ekwavelisa iirola zendlela, iigraders, abembi. , izilayishi, iiforklift, njl