The world's first excavator

The originalexcavatoris manual,from invention tonow has been one hundred and thirty years,experiencedsteamdrive,electric drive,and a variety ofinternal combustion enginedriven technique.In twentieth Century 40years later,the hydraulictechnology has been used inexcavator,twentieth Century 50'sdeveloped acrawlertoday peoplecommonhydraulic excavator.The three most important parametersof excavator:vehicle weight(mass),the engine power andbucket capacity.