History. Lub dragline tau tsim nyob rau hauv 1904 los ntawm John W. Nplooj ntawv ntawm nplooj ntawv Schnable Kev cog lus rau kev siv khawb Chicago Canal. Xyoo 1912 nws tau los ua Lub Tuam Txhab Tuam Txhab, thiab ib txoj kev taug kev tau tsim ob peb xyoos tom qab, muab cov kev sib tw nrog kev txav mus los.
Thaum twg yog qhov dragline excavator tsim?
In 1939 lub tuam txhab Marion Steam Shovel Dredge Company (tsim nyob rau xyoo 1880) tau tsim nws thawj txoj kev taug kev. Lub tuam txhab tau hloov nws lub npe mus rau Marion Power Shovel Company hauv xyoo 1946 thiab tau txais los ntawm Bucyrus hauv xyoo 1997.
Puas yog lawv tseem ua cov cab?
Draglines niaj hnub
Giant draglines tau ntev los lawm, tab sis dragline excavators tseem siv ntau heev.
Leej twg invented the dragline?
John W. Page tau tsim lub dragline hauv xyoo 1904. Ib qho kev taug kev tau tsim ob peb xyoos tom qab, tso cai rau kev txav mus los tsis muaj kev sib tw thiab cov menyuam, thiab tau txais los ntawm Chicago. -based Page Engineering Company hauv xyoo 1920s. Lub tuam txhab tau tshaj tawm nws qhov nrov 600-series draglines nyob rau nruab nrab-1930s.
Dragline excavators siv rau dab tsi?
A dragline excavator yog ib yam khoom hnyav siv hauv civil engineering, deg mining thiab excavating. Ib tug loj excavator siv ib tug dragline los rub lub thoob los ntawm ib tug hlau cable. Tus neeg teb xov tooj txo lub thoob mus rau cov khoom uas yuav tsum tau khawb.
