Steamrollers yog rollers uas flattened txoj kev Steamrollers tau powered los ntawm chav, txawm hais tias lub sij hawm steamroller tseem siv rau cov niaj hnub rollers khiav los ntawm diesel. Steamrollers flattened nto vim lub loj ntawm lub tsheb thiab lub cylindrical zoo li nruas, hu ua yob.
npaum chais hu ua dab tsi tam sim no?
Ib yam ntawm cov khoom siv compaction feem ntau yog txoj kev rollersTxoj kev rollers muaj keeb kwm ntev, nrog qee qhov thawj zaug rub los ntawm nees thiab siv rau kev ua liaj ua teb.. Qhov tseeb, niaj hnub rollers tseem hu ua steam rollers, txij thaum lawv tau siv los ntawm lub tshuab hluav taws xob.
Thaum twg lawv tso tseg tsis siv lub tshuab nqus tsev?
Qee lub tuam txhab kev lag luam hauv Teb Chaws Asmeskas siv steamrollers los ntawm xyoo 1950 Hauv UK qee qhov tseem ua haujlwm txog thaum xyoo 1970s. Raws li cov tshuab hluav taws xob sab hauv tau txhim kho nyob rau hauv lub xyoo pua 20th, kerosene-, roj av- (petrol), thiab diesel-powered rollers maj mam hloov lawv cov chav-powered counterparts.
Thaum twg lub steamroller tau tsim?
Nyob rau hauv 1860, ib daim ntawv qhia ntxov heev ntawm cov menyuam yaus tau pom hauv Fabkis los ntawm Louis Lemoine, ua raws li xyoo 1863 lwm daim ntawv los ntawm William Clark thiab nws tus khub W. F. Batho.
Yuav ua li cas ceev lub steamroller mus?
Cov tub ceev xwm teb tau tuaj yeem ntes Campbell thaum nws tsav lub steamroller, uas muaj qhov ceev tshaj plaws 8 mph.
