【摘要】 本文在分析振动输送机的弯曲振动对物料输送的影响基础上,提出了弯曲振动系数的概念,并分别给出了计算单质体和多质体振动输送机弯曲振动系数的电算方法,即传递矩阵法和有限元法,确定了弯曲振动系数的许用值范围,提出了校核弯曲振动的具体方法。此外,弯曲振动系数还可以作为衡量一台振动输送机技术性能的重要指标。更多还原

【Abstract】 This paper advances a new concept,BVF——bending vibration factor,forthe purpose of checking the bending vibration of a vibrating conveyer just like checking its strength through a stress calculation in design.The BVF may be expressed aswhere a is the maximum amplitude of the bending vibration and A the amplitude of parallel motion in the direction perpendicular to the axis of conveyer trough.The allowable value of BVF,which may be applied to judge the reasonableness for designing a vibratir.g con eyer,is proposed to be smaller than 1/5~1/4 and no larger than 1/3-1/2 in general.On the problem of calculating the natural frequencies and their vibrational responses under the bending vibration for a vibrating conveyer,the transfer matrix method and the finite element method are applied to the bending vibrations with single-mass and with multi-mass respectively.Subsequently,the source programs of EBVA and EBVB are also made correspondingly with FORTRAN-Ⅳ-H.It seems probable that the use of BVF is convenient to check the bending vibration that usually is a problem to deal with in design.更多还原