Kev faib ua pawg ntawm bulldozers, Indian bulldozer saw Hoobkas
Lub tshuab crawler dozer (tseem hu ua crawler dozer) tau tsim los ntawm Benjamin Holt, ib tug neeg Asmeskas, hauv xyoo 1904. Nws tau tsim los ntawm kev teeb tsa lub tshuab nqa tes ua ntej lub tsheb laij teb crawler. Lub sijhawm ntawd, lub zog yog lub cav ua pa. Tom qab ntawd, cov crawler dozers tsav los ntawm lub zog roj av thiab lub cav roj av tau tsim. Lub hniav bulldozer kuj tau tsim los ntawm kev nqa tes mus rau kev nqa hlua hlau. Benjamin Holt kuj yog ib tus neeg tsim Caterpillar Inc. hauv Tebchaws Meskas. Xyoo 1925, Holt Manufacturing Company thiab C 50. Best Bulldozer Company tau koom ua ke los ua Caterpillar Bulldozer Company, ua lub ntiaj teb thawj lub chaw tsim khoom siv bulldozer, thiab tau ua tiav thawj pawg ntawm 60 lub bulldozers nrog lub cav diesel hauv xyoo 1931. Nrog rau kev nce qib ntawm thev naus laus zis, lub bulldozer tau siv lub zog los ntawm lub cav diesel, thiab lub hniav bulldozer thiab scarifier raug tsa los ntawm cov thooj voos kheej kheej hydraulic. Ntxiv rau cov tsheb laij teb hom crawler, kuj tseem muaj cov log tsheb laij teb hom, uas yog li kaum xyoo tom qab dua li cov tsheb laij teb hom crawler. Cov tsheb laij teb crawler muaj kev ua tau zoo dua thiab tuaj yeem ua rau muaj kev sib txhuam ntau dua, yog li ntau yam thiab ntau ntawm lawv cov khoom hauv tsev thiab txawv teb chaws ntau dua li cov tsheb laij teb log tsheb. Thoob ntiaj teb, Caterpillar yog lub tuam txhab tsim khoom siv tshuab loj tshaj plaws hauv ntiaj teb. Nws cov tsheb laij teb caterpillar suav nrog cov koob loj, nruab nrab thiab me me D3-D11, qhov loj tshaj plaws D11 RCD, thiab lub zog flywheel ntawm lub cav diesel ncav cuag 634kw; Komatsu, lub tuam txhab Nyiv Pooj, qeb thib ob. Xyoo 1947, nws tau pib qhia thiab tsim D50 crawler bulldozers. Muaj 13 series ntawm crawler bulldozers, xws li D21-D575, qhov me tshaj plaws yog D21, lub zog flywheel ntawm lub cav diesel yog 29.5kw, qhov loj tshaj plaws yog D575A-3SD, thiab lub zog flywheel ntawm lub cav diesel yog 858kw. Nws tseem yog lub bulldozer loj tshaj plaws hauv ntiaj teb tam sim no; Lwm lub chaw tsim khoom bulldozer tshwj xeeb yog Liebheer Group ntawm lub teb chaws Yelemees. Nws cov bulldozers yog tsav los ntawm hydrostatic siab. Tom qab ntau tshaj kaum xyoo ntawm kev tshawb fawb thiab kev txhim kho, cov thev naus laus zis no tau qhia txog tus qauv hauv xyoo 1972. Xyoo 1974, nws tau pib tsim cov PR721-PR731 thiab PR741 hydrostatic tsav crawler bulldozers. Vim muaj kev txwv ntawm cov khoom siv hydraulic, nws lub zog siab tshaj plaws tsuas yog 295Kw, thiab nws cov qauv yog PR751 mining.
Peb lub tuam txhab tsim khoom bulldozer saum toj no sawv cev rau qib siab tshaj plaws ntawm cov crawler bulldozers hauv ntiaj teb niaj hnub no. Lwm cov tuam txhab tsim khoom txawv teb chaws ntawm crawler bulldozers, xws li John Deere, Case, New Holland thiab Dreista, kuj muaj cov thev naus laus zis siab heev. Lub Hoobkas saw hlau bulldozer hauv Is Nrias teb
Kev tsim cov bulldozers hauv Suav teb tau pib tom qab kev tsim ntawm Tuam Tshoj Tshiab. Thaum xub thawj, lub bulldozer tau teeb tsa rau ntawm lub tsheb laij teb ua liaj ua teb. Nrog rau kev txhim kho ntawm lub teb chaws kev lag luam, qhov kev thov rau nruab nrab thiab loj crawler bulldozers hauv cov mines loj, kev txuag dej, chaw nres tsheb fais fab thiab cov chaw thauj mus los tau nce ntxiv. Txawm hais tias kev lag luam tsim khoom ntawm nruab nrab thiab loj crawler bulldozers hauv Suav teb tau ua tiav zoo, nws tsis tuaj yeem ua tau raws li qhov xav tau ntawm kev txhim kho kev lag luam hauv teb chaws. Yog li ntawd, txij li xyoo 1979, Suav teb tau ua tiav cov thev naus laus zis tsim khoom, cov txheej txheem cov txheej txheem, cov qauv kev siv tshuab thiab cov khoom siv ntawm crawler bulldozers los ntawm Komatsu Company ntawm Nyiv Pooj thiab Caterpillar Company ntawm Tebchaws Meskas. Tom qab kev zom thiab kev nqus, thiab cov thev naus laus zis tseem ceeb tau daws, tus qauv uas tswj hwm los ntawm Komatsu cov khoom siv thev naus laus zis hauv xyoo 1980 thiab 1990 tau tsim. Indian bulldozer saw Hoobkas
Txij li xyoo 1960, muaj li plaub lub tuam txhab tsim khoom hauv kev lag luam bulldozer hauv tsev. Qhov laj thawj yog vim tias qhov xav tau ntawm cov khoom lag luam bulldozer siab, qhov nyuaj yog qhov loj, thiab kev tsim khoom loj xav tau kev nqis peev loj. Yog li ntawd, cov lag luam ib txwm tsis kam koom nrog yooj yim. Txawm li cas los xij, nrog rau kev txhim kho ntawm kev ua lag luam, txij li "Yim Tsib Xyoos Txoj Kev Npaj", qee lub lag luam loj thiab nruab nrab hauv Suav teb tau pib ua haujlwm bulldozers raws li lawv lub zog, xws li Inner Mongolia No.1 Machinery Factory, Xuzhou Loader Factory, thiab lwm yam, thiab nthuav dav pab pawg kev lag luam bulldozer. Tib lub sijhawm, muaj ob peb lub tuam txhab pib poob qis vim yog kev tswj hwm tsis zoo thiab qhov xav tau hloov kho rau kev txhim kho kev ua lag luam, thiab qee qhov tau rho tawm ntawm kev lag luam. Tam sim no, cov chaw tsim khoom bulldozer hauv tsev feem ntau suav nrog 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., thiab lwm yam. Ntxiv nrog rau kev tsim cov bulldozers, cov tuam txhab saum toj no kuj tau pib koom nrog kev tsim cov khoom siv tshuab tsim kho, xws li Shantui, uas kuj tsim cov rollers txoj kev, graders, excavators, loaders, forklifts, thiab lwm yam. Indian bulldozer saw Hoobkas
Lub sijhawm tshaj tawm: Cuaj hlis-21-2022
