Kev Txhim Kho Keeb Kwm Ntawm Excavators

Thaum pib, excavators tau manually ua, thiab nws tau tshaj 130 xyoo txij li thaum lawv invention nyob rau hauv 2013. Thaum lub sij hawm lub sij hawm no, lawv tau mus dhau ib tug gradual txoj kev loj hlob los ntawm ib tug gradual txoj kev loj hlob los ntawm lub zog tsav thoob rotary excavators rau hluav taws xob thiab sab hauv combustion engine tsav rotary excavators, thiab tag nrho. Tsis siv neeg hydraulic excavators siv mechatronics thiab hydraulic integration technology. Thawj hydraulic excavator tau ntse tsim los ntawm lub Hoobkas hauv Portland, Fabkis. Raws li kev siv tshuab hydraulic, hydraulic backhoe av mounted excavators tau ntsia rau ntawm cov tsheb laij teb hauv xyoo 1940. Nyob rau hauv 1951, thawj tag nrho hydraulic backhoe excavator twb launched los ntawm lub Hoobkas Poclain nyob rau hauv Fabkis, yog li tsim ib tug tshiab qhov chaw nyob rau hauv lub teb ntawm excavator technology kev loj hlob. Thaum ntxov thiab nruab nrab -1950s, trailer hom tag nrho cov teb hydraulic excavators thiab taug qab hom hydraulic excavators tau ua tiav. Kev sim ua ntej ntawm hydraulic excavators siv hydraulic tshuab los ntawm cov dav hlau thiab tshuab cov cuab yeej, tsis muaj hydraulic Cheebtsam haum rau ntau yam kev ua hauj lwm ntawm excavators, tsis ruaj tsis khov manufacturing zoo, thiab tsis tiav cov khoom txhawb nqa. Txij li thaum xyoo 1960, hydraulic excavators tau nkag mus rau theem ntawm kev txhawb nqa thiab kev loj hlob, thiab cov tuam txhab excavator thiab ntau yam hauv ntau lub teb chaws tau nce sai, uas ua rau muaj kev nce qib hauv kev tsim khoom. Nyob nruab nrab ntawm 1968 thiab 1970, hydraulic excavator ntau lawm suav txog 83% ntawm tag nrho cov excavator ntau lawm, nce mus txog 100%