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目前,国产拖拉机大部分都装有液压悬挂装置。机引犁、联合收割机、自卸拖车、挖泥船、农田基本建设机具、大型轴流泵和榨油、制茶等农副产品加工机具,也采用了液压技术。一台拖拉机上有三组液压元件,一台联合收割机则要装十二件。一九七三年全国生产了农机用液压元件十八万件。和二、三十年前相比,现代农业机械结构的显著变化之一是广泛应用了液压技术。我国现在生产和正在研究的机力农具绝大部分是悬挂式的,如果拖拉机上不配上液压装置,这些农具便无法使用。推土机、
At present, most domestic tractors are equipped with hydraulic suspension device. Machine plows, combine harvesters, dump trucks, dredgers, farmland infrastructures, large axial-flow pumps and agricultural and sideline products processing machines such as oil extraction and tea making machines are also equipped with hydraulic technology. There are three sets of hydraulic components on a tractor and twelve on a combine harvester. In 1973, the country produced 180,000 hydraulic components for agricultural machinery. Compared with two or three decades ago, one of the significant changes in the structure of modern agricultural machinery was the widespread application of hydraulics. Most of the mechanized farm implements now being produced and under study in our country are suspended and can not be used if the tractor is not fitted with hydraulic equipment. bulldozer,