【摘要】 本文主要研究井塔整体振动的固有频率和在塔上机电设备激励下的响应,也讨论了井塔计算模型的简化方法。计算井塔响应时,使井塔受单位幅值正弦激振力的作用,在计算机上对井塔响应进行扫频计算,输出井塔频响曲线或频响表格。报据这些曲线和表格,可以了解该井塔在各种频率和幅值的正弦激振力怍用下的响应情况。采用本文所述的计算过程编制的小型专用程序,可在中小型计算机上进行计算,不但机时少,费用低,而且计算精度也是令人满意的。更多还原

【Abstract】 This paper deals with the methods of how to determine the natural frequenciesand the responses of the hoist tower which is excited by the hoisting unit or someother equipment in the hoist tower.Methods of how to establish a mechanical modelof the hoist tower are discussed also.In order to compute the responses of the hoist tower,we first supposed that thehoist tower is acted upon by a harmonic force with unit amplitude,then employed thesinusoidal frequency sweep method,using a computer.Finally,the frequency-responsecurves or tables of the responses of the hoist tower were calculated by the computer.Using these curves and tables,it is possible to find out the responses of a hoist towerwhich is acted upon by an exciting force with various sinusoidal frequencies and vari-ous amplitudes.This procedure can be carried out with satifactory results using asmall or medium size computer,which reduces both computing time and expenses.更多还原