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拖拉绳在起重吊装中的受力分析,一般采用的计算都较粗略,其最大的不足之处是,把整个系统看成了静定平衡系统,而买际吊装中它是一个静不定系统。另外,计算中没有考虑各拖拉绳的长度、直径与水平面的夹角以及预紧力等对拖拉绳受力的影响。本文是在以往常用的计算分析基础上,考虑了上述诸因素,对拖拉绳在起重吊装中的受力状况作了精确分析,并建立了相应的数学模型,给出了一种精确的计算方法,而且用BASIC 语言编为程序输入 SHARP PC—1501袖珍计算机,对具体实例进行了计算。
Tow rope in lifting crane in the force analysis, the calculation is generally used are crude, the biggest drawback is that the entire system as a static equilibrium system, and buy it hoisting is a static system . In addition, the calculation does not take into account the length of the tow rope, the angle between the diameter and the horizontal plane and the pre-tightening force on the drag rope force. Based on the commonly used calculation and analysis in the past, considering the above factors, the paper analyzes the stress state of the towline in lifting and loading accurately and establishes the corresponding mathematical model and gives an accurate calculation Method, but also use BASIC language program as input SHARP PC-1501 pocket computer, calculated the specific examples.