Thawj thawj lub cav muag: qhov tshwm sim ntawm lub cev muaj zog thiab sab hauv lub cav ua kom muaj lub tshuab ua kom pom tau zoo tshaj plaws thiab tsim fais fab, yog li ntawd txhua yam khoom siv tawm hauv av tuaj mus ua ib qho tom qab. Nyob rau hauv 1899, thawj hluav taws xob excavator nyob. Tom qab Tsov Rog Thoob Ntiaj Teb thawj zaug, lub tshuab hluav taws xob tau los kuj tseem siv rau cov excavator. Cov neeg ua haujlwm tsav tsheb uas tsav los ntawm lub tshuab hluav taws xob (los yog lub cev muaj zog) yog thawj cov cim ntawm cov tshuab hluav taws xob.
Qhov thib ob cim excavator: nrog lub thoob plaws kev siv tshuab hydraulic, cov excavator muaj ntau dua scientific thiab siv kis tau tus mob. Cov hydraulic hloov tsis hloov ntawm cov neeg kho tshuab kis tau tus kab mob yog ib qhov kev tawm dag zog hauv kev siv tshuab ua excavator. Nyob rau hauv 1950, lub teb chaws Yelemees thawj hydraulic excavator yug. Tus kws kho tsheb tsav hydraulics yog ob lub cim kev ua luam.
Lub tebchaws thib peb excavator: daim ntaub ntawv siv electronic technology, tshwj xeeb tshaj yog siv tshuab computer, ua rau cov excavator muaj qhov kev tswj tsis siv neeg, thiab tseem ua rau cov excavator loj hlob mus rau kev coj ua ntawm kev ua haujlwm siab, kev sib txuas lus thiab kev txawj ntse. Cov kab txiav tawm ntawm cov khoom siv hluav taws xob thiab hluav taws xob tau tshwm sim nyob rau hauv 1965, thiab cov tshuab siv mechatronics siv los ua ntau qhov hydraulic excavators nyob ib ncig ntawm 1985, lub sijhawm ntawd lub hom phiaj tseem ceeb yog kom txuag tau lub zog. Lub tshuab hluav taws xob yog lub cim ntawm lub cim thav peb tiam.