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80年代初,美国钢铁公司发现带钢热轧机的传动装置工作情况变坏,有许多齿轮损坏,致使工厂停工停产。尽管这些传动装置已运行了约20年,然而近年来愈来愈重的负荷和生产任务迫使钢铁工业不得不对损坏的传动装置付出昂贵的代价。 不久前美国钢铁公司与传动技术部门合作,着手一项改造计划,采用先进的齿轮传动技术替代过时的传动装置,以适应更高的负荷和生产能力的需要。 带钢轧机的工作情况 改造的第一步工作是分析轧钢机的工作情况。典型的带钢轧机是由一系列机架组成。当钢坯通过各机架时,不断减小其厚度。每个机架上有一台电机与主减速器相连接。主减速器的输出轴与齿轮机架柔性连接,由齿轮机架带动轧辊。每个齿轮机架有一个齿轮箱,将功率在上下轧辊之间进行分流。
In the early 1980s, the United States Steel Company found that the operation of the transmission of the strip hot rolling mills deteriorated and many of the gears were damaged, causing the factory to stop production. Although these transmissions have been in operation for about 20 years, the increasing load and production tasks in recent years have forced the steel industry to pay an expensive price for damaged transmissions. Not long ago, the U.S. steel company, in cooperation with the drivetrain technology department, started a retrofit program to replace outdated gearing with state-of-the-art gear technology to meet the needs of higher loads and capacity. The first step in the work of strip mill transformation is to analyze the working conditions of the rolling mill. A typical strip mill consists of a series of racks. As the billet passes through the racks, the thickness is continuously reduced. There is a motor on each rack connected to the final drive. The output shaft of the main reducer is connected with the gear rack flexibly, and the rollers are driven by the gear rack. Each gear rack has a gearbox that splits the power between the upper and lower rolls.