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在最近的液压机制造实践中已经广泛采用框架结构的机架,这种框架是由轧制厚钢板(锻钢板的少)制成的板框重叠而成的。这种框架结构与传统的由锻造立柱和铸造横梁组成的框架结构相比,有一系列优点,其中主要的是:轧制件的强度比铸件的高,危险截面中应力集中小,能够用多层平板制造大尺寸组合式框架;工艺性十分好;制造工作量较小;成本也较低。因此,采用这种框架的经济效果很大,可以以75000吨模锻液压机作为例子。液压机的框架在垂直于层叠板框平面方向上的刚性通常用螺栓将各板框紧固的方法
In the recent manufacture of hydraulic machines, frame frames have been widely used. These frames are made by overlapping plate frames made of rolled thick steel plates (forged steel plates). This frame structure has a number of advantages over the conventional frame structure consisting of forged columns and cast beams, chief among them being that the strength of the rolled part is higher than that of the cast part, the concentration of stress in the critical section is small, Flat-panel manufacturing large-size modular frame; technology is very good; less manufacturing effort; lower costs. Therefore, the economical effect of adopting this kind of frame is great, and the 75,000-ton forging hydraulic press can be taken as an example. The rigidity of the frame of the hydraulic press in a direction perpendicular to the plane of the laminated board frame is usually secured by bolts