所以研究和制造大型振动筛，提升设计水平，提高振动筛的运行可靠性已成为一项重要的研究课题。
Thus it is an important research subject to design large vibrating screenings, raise the design level and improve working reliability and service life of vibrating screenings.
大型振动基础的设计涉及机械和土建两个专业，本文对椭圆振动筛的地基进行了计算和设计。
Design on foundation of large vibration screen is a specialized and complicated task, which involves both mechanical and civil construction specialities.
通过有限元软件计算出了筛体结构的固有频率、固有振型，为振动筛的大型化设计提供了理论依据。
The natural frequency and the natural mode of vibrating screen have been calculated by the software for FEM, proposes the theoretical basis for the design of large-sized vibrating screen.
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