Kugawa kwa ma bulldozers, Indian bulldozer chain fakitale

Kugawa kwa ma bulldozers, Indian bulldozer chain fakitale

Crawler dozer (yomwe imadziwikanso kuti crawler dozer) idapangidwa bwino ndi Benjamin Holt, waku America, mu 1904. Idapangidwa poyika bulldozer yokweza pamanja kutsogolo kwa thirakitala yokwawa.Panthawiyo, mphamvu inali injini ya nthunzi.Pambuyo pake, zida zokwawa zoyendetsedwa ndi mphamvu ya gasi ndi injini yamafuta zidapangidwa.Bulldozer blade idapangidwanso kuchokera pakukweza pamanja kupita ku kukweza zingwe.Benjamin Holt analinso mmodzi mwa anthu amene anayambitsa kampani ya Caterpillar Inc. ku United States.Mu 1925, Holt Manufacturing Company ndi C 50. Best Bulldozer Company inaphatikizana kupanga Caterpillar Bulldozer Company, kukhala kampani yoyamba padziko lonse yopanga zida za bulldozer, ndipo inayambitsa bwino gulu loyamba la ma buldoza 60 okhala ndi injini za dizilo mu 1931. Ndi kupita patsogolo kosalekeza kwaukadaulo waukadaulo. , bulldozer imayendetsedwa ndi injini za dizilo, ndipo bulldozer blade ndi scarifier zonse zimakwezedwa ndi masilinda a hydraulic.Kuphatikiza pa ma bulldozer amtundu wa crawler, palinso ma bulldozer amtundu wa matayala, omwe amatha pafupifupi zaka khumi kuposa ma bulldozer amtundu wa crawler.Crawler bulldozers amachita bwino kumamatira ndipo amatha kukopa kwambiri, kotero kuti mitundu ndi kuchuluka kwa zomwe amagulitsa kunyumba ndi kunja ndizochuluka kwambiri kuposa za matayala.Padziko lonse lapansi, Caterpillar ndiye kampani yayikulu kwambiri padziko lonse lapansi yopanga makina opanga makina.Mabuldozer ake a mbozi akuphatikizapo zazikulu, zapakati ndi zazing'ono za D3-D11, D11 RCD yaikulu kwambiri, ndi mphamvu ya flywheel ya injini ya dizilo imafika 634kw;Komatsu, kampani yaku Japan, idakhala yachiwiri.Mu 1947, idayamba kuyambitsa ndikupanga ma bulldozer a D50 crawler.Pali 13 mndandanda wa zokwawa bulldozers, kuyambira D21-D575, yaing'ono ndi D21, flywheel mphamvu ya injini dizilo ndi 29.5kw, yaikulu ndi D575A-3SD, ndi flywheel mphamvu ya injini dizilo ndi 858kw.Ndiwonso bulldozer yayikulu kwambiri padziko lapansi pano;Wina wapadera wopanga ma bulldozer ndi Liebheer Gulu la Germany.Ma bulldozers ake onse amayendetsedwa ndi hydrostatic pressure.Pambuyo pazaka zoposa khumi za kafukufuku ndi chitukuko, lusoli linayambitsa pulojekiti mu 1972.Chifukwa cha kuchepa kwa zigawo za hydraulic, mphamvu yake yayikulu ndi 295kw yokha, ndipo chitsanzo chake ndi migodi ya PR751.

Opanga ma buldoza atatu omwe ali pamwambawa akuyimira mulingo wapamwamba kwambiri wa zokwawa padziko lapansi masiku ano.Ena opanga ma bulldozer akunja akunja, monga John Deere, Case, New Holland ndi Dreista, alinso ndiukadaulo wapamwamba wopanga.Indian bulldozer chain fakitale
Kupanga ma bulldozers ku China kudayamba kukhazikitsidwa kwa New China.Poyamba, bulldozer inayikidwa pa thirakitala yaulimi.Ndi chitukuko cha chuma cha dziko, kufunikira kwa ma bulldozers apakati ndi akulu m'migodi ikuluikulu, malo osungira madzi, malo opangira magetsi ndi madipatimenti amayendedwe akuwonjezeka.Ngakhale makampani opanga ma bulldozers apakati ndi akuluakulu ku China apita patsogolo kwambiri, sangathenso kukwaniritsa zofunikira za chitukuko cha dziko.Chifukwa chake, kuyambira 1979, China idayambitsa motsatizana ukadaulo wopanga, mafotokozedwe atsatanetsatane, miyeso yaukadaulo ndi makina opangira ma bulldozers kuchokera ku Komatsu Company of Japan ndi Caterpillar Company ya United States.Pambuyo pa chimbudzi ndi kuyamwa, ndi matekinoloje akuluakulu adagwiritsidwa ntchito, chitsanzo cholamulidwa ndi zinthu zamakono za Komatsu mu 1980s ndi 1990s zinapangidwa.Indian bulldozer chain fakitale

Kuyambira m'ma 1960, pakhala pali opanga pafupifupi anayi mumakampani am'nyumba.Chifukwa chake ndikuti zofunikira pakukonza zinthu za bulldozer ndizokwera, zovuta zake ndizabwino, ndipo kupanga kwakukulu kumafuna ndalama zambiri.Chifukwa chake, mabizinesi wamba sangayerekeze kuchita nawo mosavuta.Komabe, ndi chitukuko cha msika, kuyambira "Eighth Five Year Plan", ena mabizinesi akuluakulu ndi sing'anga-kakulidwe China ayamba concurrently ntchito bulldozers malinga ndi mphamvu zawo, monga Inner Mongolia No.1 Machinery Factory, Xuzhou Loader Factory, etc., ndikukulitsa gulu lazamalonda la bulldozer.Nthawi yomweyo, mabizinesi ochepa adayamba kutsika chifukwa chosayang'anira bwino komanso kufunikira kozolowera chitukuko cha msika, ndipo ena adachoka pamakampaniwo.Pakadali pano, opanga ma bulldozer apanyumba makamaka akuphatikizapo Shantui 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., etc. Kuphatikiza pa kupanga ma bulldozers, makampani omwe ali pamwambawa adayambanso kupanga zinthu zina zamakina omanga, monga Shantui, omwe amapanganso zodzigudubuza zamsewu, ma graders, ofukula. , zonyamula katundu, ma forklift, etc. Indian bulldozer chain fakitale