起重运输机械
起重運輸機械
기중운수궤계
HOISTING AND CONVEYING MACHINERY
2015年
4期
33-37
,共5页
林贵瑜%孙婷娜%魏文儒%李奎贤
林貴瑜%孫婷娜%魏文儒%李奎賢
림귀유%손정나%위문유%리규현
起重机%臂架%参数设计%原理设计
起重機%臂架%參數設計%原理設計
기중궤%비가%삼수설계%원리설계
crane%boom%parameter design%principle design
依据臂架最小幅度和额定载荷，将额定载荷、变幅绳拉力及提升力简化到臂架顶点，从设计源头出发分析其力学行为，找到臂架内力即轴向力、偏摆力、变幅绳拉力与额定载荷的关系，根据设计经验确定了轴向内应力与其总工作应力、临界应力与屈服极限的关系。也确定了基本臂架质量、臂架的主要断面及臂架根部的几何参数。根据系统的输入与输出关系，采用力学法，确定出系统的基本特性，并与实例计算结果进行对比，结果合理，为起重机初设提供了确定臂架重要参数的设计方法，提高了自主设计能力。
依據臂架最小幅度和額定載荷，將額定載荷、變幅繩拉力及提升力簡化到臂架頂點，從設計源頭齣髮分析其力學行為，找到臂架內力即軸嚮力、偏襬力、變幅繩拉力與額定載荷的關繫，根據設計經驗確定瞭軸嚮內應力與其總工作應力、臨界應力與屈服極限的關繫。也確定瞭基本臂架質量、臂架的主要斷麵及臂架根部的幾何參數。根據繫統的輸入與輸齣關繫，採用力學法，確定齣繫統的基本特性，併與實例計算結果進行對比，結果閤理，為起重機初設提供瞭確定臂架重要參數的設計方法，提高瞭自主設計能力。
의거비가최소폭도화액정재하，장액정재하、변폭승랍력급제승력간화도비가정점，종설계원두출발분석기역학행위，조도비가내력즉축향력、편파력、변폭승랍력여액정재하적관계，근거설계경험학정료축향내응력여기총공작응력、림계응력여굴복겁한적관계。야학정료기본비가질량、비가적주요단면급비가근부적궤하삼수。근거계통적수입여수출관계，채용역학법，학정출계통적기본특성，병여실례계산결과진행대비，결과합리，위기중궤초설제공료학정비가중요삼수적설계방법，제고료자주설계능력。
Based on the minimum range and rated load of the boom,the rated load,and pull force and lifting force of the derricking rope are simplified into the peak of the boom,in order to find out the relationship between the boom inner force (including axial force,deflection force,and pull force of the derricking rope) and the rated load from the design source.Considering the design experience,the relations between axial inner stress and overall working stress,between criti-cal stress and yield limit are determined,so are the geometric parameters for basic boom mass,main cross-section and boom root as well.According to input and output relation,the basic characteristics of the system is determined using me-chanical method,which is compared with the calculation result,showing well agreement.The mentioned design can provide important parameters of the boom for initial design of the crane and improve self-design capacity.
