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(1)液压元件已被列为国家基础件的重点,但是液压(包括气动)行业本身从组成功能系统的角度看,究竟又有那些应列为基础的基础件呢?人们往往偏重液压泵、液压马达、阀件、油缸等所谓四大元件的开发与生产。而主机系统不仅需要上述元件,而且需要大量的各种类型的管路接头、密封以及过滤器、冷却器等等。但对这些方面液压行业的重视是不够的。我们生产了近十年的液压挖掘机,至今没有能从液压
(1) The hydraulic components have been listed as the national basic parts, but the hydraulic (including pneumatic) industry itself is composed of functional systems from the point of view, what exactly should be listed as the basis of the pieces? People tend to focus on hydraulic pumps, Hydraulic motors, valves, cylinders and other so-called four major components of the development and production. The host system not only needs the above components, but also requires a large number of various types of pipe joints, seals and filters, coolers and the like. However, these aspects of the hydraulic industry’s attention is not enough. We have produced hydraulic excavators for almost a decade and so far have not been able from hydraulic