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工程设计学报
工程设计学报  2018, Vol. 25 Issue (2): 151-158    DOI: 10.3785/j.issn.1006-754X.2018.02.004
保质设计     
直接提钻工况下双斜撑长螺旋钻机桅杆稳定性分析
胡均平1, 乔榆凯1, 李科军1, 胡慧雨2
1. 中南大学 机电工程学院, 湖南 长沙 410083;
2. 湖南长河机械有限公司, 湖南 长沙 410600
Stability analysis of the mast of continuous flight auger driller with double braces under direct-drill-lifting condition
HU Jun-ping1, QIAO Yu-kai1, LI Ke-jun1, HU Hui-yu2
1. College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China;
2. Hunan Changhe Machinery Co., Ltd., Changsha 410600, China
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摘要：

为准确分析直接提钻工况下双斜撑长螺旋钻机桅杆的稳定性，建立双斜撑作用下多段桅杆的挠曲微分方程，引入边界条件，获得双斜撑作用下桅杆失稳特征方程及其提钻临界值。对ZLH43ZL（TB）-D180长螺旋钻机进行稳定性分析，将推导结果与采用ANSYS有限元方法所得结果进行对比。结果表明：推导的失稳特征方程基本正确；直接提钻工况下双斜撑长螺旋钻机桅杆的失稳临界值Fcr与主、副斜撑点位置参数λ1，λ2，桅杆截面惯性矩I和主卷扬钢丝绳角度θ等因素有关。失稳临界值Fcr随λ1和λ2的逐渐增大，先增大后减小，且λ1对Fcr的影响甚于λ2；Fcr随I的增大，先迅速增大，后逐渐平缓；Fcr随θ（0°≤θ≤20°）不断增大而缓慢增大。研究结果对工程机械中类似结构的稳定性分析有一定参考价值。
关键词： 直接提钻工况;  双斜撑;  长螺旋钻机;  失稳特征方程;  ANSYS;  失稳临界值    
Abstract:

To analyze the stability of the mast of continuous flight auger driller with double braces under direct-drill-lifting condition, the deflection differential equations of the mast were established. With proper boundary conditions, the instability characteristic equations of the mast and the critical value of lifting drill were presented. The stability of ZLH43ZL(TB)-D180 continuous flight auger driller was analyzed, and the theoretical analysis results and the calculating results by ANSYS finite element method were compared. The results implied that the established instability characteristic equations were right and revealed that the instability critical value Fcr was related to the factors such as the main and auxiliary supporting position parameters λ1 and λ2, the mast section inertia moment I and the main hoisting wire rope angle θ. Meanwhile, Fcr first increased and then decreased with the increase of λ1 and λ2, and the impact of the λ1 was much bigger than the impact of λ2. With the increase of I, Fcr first increased rapidly, and then gradually eased. With the increase of θ (0° ≤ θ ≤ 20°), Fcr increased slowly. The conclusion can be expanded to analyzing the stability of the similar machinery structures in the context of engineering machinery.
Key words: direct-drill-lifting condition    double braces    continuous flight auger driller    instability characteristic equations    ANSYS    instability critical value
收稿日期: 2017-11-20 出版日期: 2018-04-28
CLC:  TU311.2  
基金资助:

国家自然科学基金资助项目（51175518）；湖南省科技型中小企业技术创新基金立项项目（12C26214305029）
通讯作者: 乔榆凯(1993-),男,山西吕梁人,硕士生,从事液压机械及其控制研究,E-mail:Qiaoyukaicus@163.com,http://orcid.org/0000-0001-5979-7526     E-mail: Qiaoyukaicus@163.com
作者简介: 胡均平(1965-),男,湖南新宁人,教授,博士生导师,博士,从事液压机械及其控制等研究,E-mail:18890393856@139.com
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引用本文:

胡均平, 乔榆凯, 李科军, 胡慧雨. 直接提钻工况下双斜撑长螺旋钻机桅杆稳定性分析[J]. 工程设计学报, 2018, 25(2): 151-158.

HU Jun-ping, QIAO Yu-kai, LI Ke-jun, HU Hui-yu. Stability analysis of the mast of continuous flight auger driller with double braces under direct-drill-lifting condition. Chinese Journal of Engineering Design, 2018, 25(2): 151-158.

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