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1981年一月份在休斯敦举办的大型施工机械展览会提供了某些今后发展趋向。预示今后20年或更长时间内的施工机械将有引人注目的发展。近期应用的科研重点是电子控制监测,现代化的液压装置,更轻和耐久的材料,多种多样的发动机。机械制造厂没有预见到过去20年生产的全液压机械,滑模铺料机和自动分批投料设备带来无可匹敌的巨大生产力,今后将被突破,但也认为他们的预测偏于保守,而且往往超出预期。美国迪耳机械制造公司计算目前推广的液压推土机,其产量的10％左右是依靠液压装置完成的,另有5％是依赖熟练操作工获得的。有的施工机械制造商正在从事新领域的科学研究,也有不少厂商偏于保守,不愿透露任何情报,但美国厂商勇于大胆探索,愿
The large-scale construction machinery exhibition held in Houston in January 1981 provided some future development trends. It indicates that the construction machinery in the next 20 years or more will have noticeable development. Recent research focuses on electronic control monitoring, modern hydraulic devices, lighter and durable materials, and a wide variety of engines. The machinery manufacturer did not foresee the production of fully hydraulic machines in the past 20 years. Sliding-mould spreaders and automatic batch feeding equipment brought unmatched tremendous productivity. They will be surpassed in the future, but they also believe their forecasts are conservative. And often beyond expectations. The United States Dier Machinery Manufacturing Co., Ltd. calculated the current promotion of hydraulic bulldozers, about 10% of its output is achieved by hydraulic devices, and another 5% rely on skilled operators to obtain. Some construction machinery manufacturers are engaged in scientific research in new areas, and some manufacturers prefer to be conservative and do not want to disclose any information. However, American manufacturers are bold in exploring and willing to