(1) Chain- hom rub: Hloov kho los ntawm lub tsheb bulldozer, hom lob no tuaj yeem ncav cuag qhov tob txog li 20 meters thiab feem ntau yog siv rau kev khawb cov pob zeb nyuaj thiab tuab heev.
(2) Hydraulic grab: hydraulic grab yog ib qho khoom siv hauv kev siv tshuab niaj hnub. Nws siv lub zog hydraulic los txhim kho kev ua haujlwm zoo thiab muaj qhov zoo xws li yoog raws thiab txav tau yooj yim.
(3) Articulated- caj npab tuav: Qhov no yog ntau yam khoom siv hauv kev tsim kho nrog ntau hom grapples rau kev khawb thiab thauj khoom xws li cib, rebar, ntoo, thiab pob zeb. Cov grapples tuaj yeem hloov pauv kom haum rau kev ua haujlwm tshwj xeeb.
(4) Lwm hom: Kuj tseem muaj tsawg dua hom grabs, xws li av -txiav grabs thiab diaphragm phab ntsa grabs.