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平地机的发展已有100多年的历史。19世纪后期,世界上最早的平地机在英国诞生,那时的平地机就是现在所说的拖式平地机——有两个大的铁皮车轮,两个人操纵铲刀升降。美国西部铁路大建设时期,用的就是马拉的拖式平地机。20世纪20年代,自行式平地机出现并逐渐成为市场主角。与欧美国家相比,我国平地机的发展起步较晚。第二次世界大战期间,我国才开始出现使用平地机。当时,美军修筑重庆至缅甸的公路时曾用过自行式4轮平地机,该机型在新中国成立多年以后仍可见到(如今的平地机都已是6轮自行式液压操纵)。
The development of grader has more than 100 years of history. The late 19th century, the world’s first grader was born in the United Kingdom, when the grader is what is now called drag machine - with two large metal wheels, two people operating the blade lift. The United States during the Western Railway construction period, is the use of horse-drawn towed grader. 1920s, motor grader appeared and has gradually become the protagonist. Compared with Europe and the United States, the development of grader in our country started late. During World War II, China began to use grader. At that time, the US military used a self-propelled 4-wheel grader when it was building roads from Chongqing to Myanmar. It was still visible for many years after the founding of New China (today’s graders are all six-wheel self-propelled hydraulic maneuvers).