Iyiphi KweziNdlela Ezintathu Enesayensi Kakhulu Yama-Park Excavators?

A.

Ingalo ibekwe i-perpendicular phansi ngama-degree angama-90, futhi ingemuva lebhakede liguquguquka phansi. Isilinda ngasinye sisesimweni sokungabi bikho kwengcindezi, futhi akukho monakalo kuphawu lukawoyela lwesilinda. Nokho, lokhu kumiswa kungabangela isilinda sebhakede ukuba sinwetshwe. Ngakho-ke, ekusebenzeni okungokoqobo, ukuvimbela izingozi, abantu abaningi bahoxisa isilinda sebhakede futhi bavumele ibhakede ukuthi liphumule phansi.

B.

Uma ipakwe ngale ndlela, isivalo sikawoyela sesilinda singaphansi kwengcindezi futhi isilinda siyavezwa, ngakho-ke asivamile ukubonakala ezindaweni zokusebenza. Kodwa-ke, lena indlela yokupaka evame kakhulu ngesikhathi sokuthuthwa kwe-excavator. Lolu hlobo lokupaka lunciphisa ubude nobude be-excavator, yenze kube lula kakhulu ukulayishwa elolini eline-flatbed ngaphandle kokuba yinde ngokweqile noma ubude.

C.

Uma ipakwe kule modi, wonke amasilinda kawoyela asesimweni sokuhoxiswa, esiza ukuvikela amasilinda kawoyela futhi kwenza kube lula ukuhlola uwoyela we-hydraulic ngaphambi kokuqala umsebenzi ngakusasa.

Iyiphi kulezi zindlela ezintathu eyisayense kakhulu yokumba izindawo zokupaka?