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起升动力系数的计算是一个尚未完满解决的老课题。因为把起重机转化成为具有数个集中质量的振动体系(例如把桥式起重机转化成图1所示的二自由度体系)进行理论分析的结果虽然与实验结果很接近,但计算方法冗繁,不切合设计的需要;而简化计算法又多种多样,莫衷一是。目前,苏联采用的简化计算法是戈赫别尔格在多年前提出的,只不过后来稍作修正而已。在我国,这一方法也有人采用。其实,由于理论上的缺陷,这种简化计算法的误差较大,不宜采用。
The calculation of lift coefficient is an old issue that has not yet been fully solved. The theoretical analysis of the crane into a vibrating system with several concentrated masses (for example, the conversion of a bridge crane into a two-degree-of-freedom system as shown in FIG. 1), although very close to the experimental results, is computationally intensive Design needs; and simplify the calculation method and a variety of different. At present, the simplified method of calculation adopted by the Soviet Union was proposed by Gohbhrer several years ago, only to be amended slightly later. In our country, this method is also used by others. In fact, due to theoretical shortcomings, the error of this simplified calculation method is larger and should not be used.