Ulwahlulo lwee-bulldozers, umzi-mveliso we-bulldozer waseIndiya

Ulwahlulo lwee-bulldozers, umzi-mveliso we-bulldozer waseIndiya

I-Crawler dozer (ekwaziwa ngokuba yi-crawler dozer) yaphuhliswa ngempumelelo nguBenjamin Holt, umMelika, ngo-1904. Yakhiwa ngokufaka i-bulldozer yokuphakamisa ngesandla phambi kwetrektara ye-crawler. Ngelo xesha, amandla yayiyi-injini yomphunga. Kamva, ii-crawler dozers eziqhutywa ngamandla egesi yendalo kunye nenjini yepetroli zaphuhliswa. I-bulldozer blade nayo yaphuhliswa ukusuka ekuphakamiseni ngesandla ukuya ekuphakamiseni ngentambo. UBenjamin Holt wayengomnye wabasunguli beCaterpillar Inc. eMelika. Ngo-1925, iHolt Manufacturing Company kunye neC 50. Best Bulldozer Company zadibana ukuze zenze iCaterpillar Bulldozer Company, zaba ngumvelisi wokuqala kwihlabathi wezixhobo ze-bulldozer, kwaye zaqalisa ngempumelelo iqela lokuqala lee-bulldozers ezingama-60 ezineenjini zedizili ngo-1931. Ngenkqubela phambili eqhubekayo yetekhnoloji, i-bulldozer inikwe amandla ziinjini zedizili, kwaye i-bulldozer blade kunye ne-scarifier zonke ziphakanyiswa zii-hydraulic cylinders. Ukongeza kwiibulldozers zohlobo lwe-crawler, kukwakho neebulldozers zohlobo lwetayara, ezisemva kweminyaka elishumi kuneebulldozers zohlobo lwe-crawler. Iibulldozers ze-Crawler zinamandla okunamathela ngcono kwaye zinokubamba kakhulu, ngoko ke iintlobo ngeentlobo kunye nobuninzi beemveliso zazo ekhaya nakwamanye amazwe zingaphezulu kakhulu kwezo zeebulldozers zamatayara. Kumazwe ngamazwe, iCaterpillar yeyona nkampani inkulu yokuvelisa oomatshini bobunjineli kwihlabathi. Iibulldozers zayo ze-caterpillar ziquka uthotho olukhulu, oluphakathi noluncinci lwe-D3-D11, eyona D11 RCD inkulu, kwaye amandla e-flywheel enjini yedizili afikelela kwi-634kw; iKomatsu, inkampani yaseJapan, yabekwa kwindawo yesibini. Ngo-1947, yaqala ukwazisa nokuvelisa iibulldozers ze-crawler ze-D50. Kukho uthotho lwe-13 lwee-crawler bulldozers, ukusuka kwi-D21-D575, eyona incinci yi-D21, amandla e-flywheel enjini yedizili yi-29.5kw, eyona inkulu yi-D575A-3SD, kwaye amandla e-flywheel enjini yedizili yi-858kw. Ikwayi-bulldozer enkulu kwihlabathi okwangoku; Omnye umenzi we-bulldozer owahlukileyo yiLiebheer Group yaseJamani. Ii-bulldozers zayo zonke ziqhutywa luxinzelelo lwe-hydrostatic. Emva kweminyaka engaphezu kweshumi yophando nophuhliso, le teknoloji yazisa iprototype ngo-1972. Ngo-1974, yaqala ukuvelisa ii-PR721-PR731 kunye nee-PR741 hydrostatic crawler bulldozers. Ngenxa yokunqongophala kwezinto ze-hydraulic, amandla ayo aphezulu yi-295Kw kuphela, kwaye imodeli yayo yi-PR751 mining.

Abavelisi be-bulldozer abathathu abangentla bamele inqanaba eliphezulu lee-crawler bulldozers kwihlabathi namhlanje. Abanye abavelisi bamanye amazwe be-crawler bulldozers, abanjengoJohn Deere, Case, New Holland kunye noDreista, nabo banezinga eliphezulu lobuchwepheshe bokuvelisa. Ifektri ye-bulldozer yaseIndiya
Ukuveliswa kwee-bulldozer eTshayina kwaqala emva kokusekwa kweNew China. Ekuqaleni, i-bulldozer yafakwa kwitrektara yezolimo. Ngokuphuhla koqoqosho lwesizwe, imfuno yee-bulldozer eziphakathi nezinkulu kwimigodi emikhulu, ulondolozo lwamanzi, izitishi zamandla kunye namasebe ezothutho iyanda. Nangona ishishini lokuvelisa ii-bulldozer eziphakathi nezinkulu eTshayina lenze inkqubela phambili enkulu, alisakwazi ukuhlangabezana neemfuno zophuhliso loqoqosho lwesizwe. Ke ngoko, ukusukela ngo-1979, iTshayina iye yazisa ngokulandelelana itekhnoloji yemveliso, iinkcukacha zenkqubo, imigangatho yobugcisa kunye neenkqubo zezinto ze-bulldozer ezivela kwiKomatsu Company yaseJapan kunye neCaterpillar Company yase-United States. Emva kokugaya nokufunxa, kunye neetekhnoloji eziphambili zijongiwe, iphethini eyayilawulwa ziimveliso zobuchwepheshe beKomatsu ngeminyaka yoo-1980 kunye noo-1990 yasekwa. Umzi-mveliso wetyathanga le-bulldozer waseIndiya

Ukususela ngeminyaka yoo-1960, bekukho abavelisi abamalunga nabane kwishishini le-bulldozer lasekhaya. Isizathu kukuba iimfuno zokucubungula iimveliso ze-bulldozer ziphezulu, ubunzima bukhulu, kwaye imveliso enkulu ifuna utyalo-mali olukhulu. Ke ngoko, amashishini aqhelekileyo awabi nabuganga bokuzibandakanya ngokulula. Nangona kunjalo, ngophuhliso lwemarike, ukususela kwi-"Eighth Five Year Plan", amanye amashishini amakhulu naphakathi eTshayina aqalise ukusebenzisa ii-bulldozer ngaxeshanye ngokwamandla awo, njenge-Inner Mongolia No.1 Machinery Factory, i-Xuzhou Loader Factory, njl.njl., kwaye yandisa iqela leshishini le-bulldozer. Kwangaxeshanye, inani elincinci lamashishini laqala ukwehla ngenxa yolawulo olubi kunye nesidingo sokuziqhelanisa nophuhliso lwemarike, kwaye amanye arhoxile kushishino. Okwangoku, abavelisi be-bulldozer basekhaya ikakhulu baquka iShantui Construction Machinery Co., Ltd., iHebei Xuanhua Construction Machinery Co., Ltd., iShanghai Pengpu Machinery Factory Co., Ltd., iTianjin Construction Machinery Factory, iShaanxi Xinhuang Industrial Machinery Co., Ltd., iYituo Construction Machinery Co., Ltd., njl. Ukongeza kwimveliso yee-bulldozer, ezi nkampani zingasentla ziqalise ukuzibandakanya kwimveliso yezinye iimveliso zoomatshini bokwakha, ezifana neShantui, ekwavelisa ii-road rollers, ii-graders, ii-excavators, ii-loaders, ii-forklifts, njl. Ifektri ye-bulldozer yaseIndiya