Earth moving machine with depth and cross-shape controls

作者: Raymond A Gurries , John Curlett

DOI:

关键词: SimulationControl valvesEngineeringHydraulic controlScraper siteAcousticsCross slope

摘要: This invention relates to the control of height or cross slope both an earth working tool such as a scraper blade with achieved by use external elongated reference member disposed along path be traveled actuate hydraulic valve ram used move tool. A pendulum-actuated is disposition.

参考文章(5)
Pickard Henry M, Millikin Arnold S, Apparatus for surfacing roads ,(1940)
Mcalister Jallie, Earth working machine ,(1932)
Jean H Knox, Sr Ben Garner, Form grading and subgrading machine ,(1933)
Christopher N Adams, Hydraulic leveling and controlling device ,(1945)
Gurries Raymond A, John Curlett, Pendulum controlled valve actuating mechanism ,(1958)