JKM系列新型矿井提升机摩擦轮结构设计与疲劳分析
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摘要
以JKM3.5×6塔式提升机摩擦轮为例,论述了传统JKM系列摩擦轮的结构特点及弊端,深入分析了影响JKM系列摩擦轮疲劳寿命的主要因素。针对存在的问题,设计了一种新型结构的摩擦轮,并对其进行了强度校核。运用ANSYS Workbench软件对新旧两种结构的摩擦轮进行了高周疲劳分析,对比了二者的应力状况、安全系数、疲劳寿命等性能参数。结果表明:新型结构安全系数更高,结构更为紧凑,疲劳寿命能得到大幅度提高,解决了传统结构中的技术缺陷,能有效缩短与国外同类产品的性能差距。
Taking the friction wheel of JKM 3.5×6 tower hoist as an example,the structural characteristics and disadvantages of the traditional JKM series friction wheel are discussed,and the main factors affecting the fatigue life of the JKM series friction wheel are deeply analyzed.In view of the existing problems,a new type of friction wheel is designed and its strength is checked.Using ANSYS Workbench software,high cycle fatigue analysis is carried out on the friction wheels of the old and new structures,and the stress status,safety coefficient,fatigue life and other performance parameters of the two structures are compared.The results show that the new structure has higher safety coefficient,more compact structure and can significantly improve fatigue life,solve the technical defects in the traditional structure and effectively shorten the performance gap with similar foreign products.
Taking the friction wheel of JKM 3.5×6 tower hoist as an example,the structural characteristics and disadvantages of the traditional JKM series friction wheel are discussed,and the main factors affecting the fatigue life of the JKM series friction wheel are deeply analyzed.In view of the existing problems,a new type of friction wheel is designed and its strength is checked.Using ANSYS Workbench software,high cycle fatigue analysis is carried out on the friction wheels of the old and new structures,and the stress status,safety coefficient,fatigue life and other performance parameters of the two structures are compared.The results show that the new structure has higher safety coefficient,more compact structure and can significantly improve fatigue life,solve the technical defects in the traditional structure and effectively shorten the performance gap with similar foreign products.
引文
[1]李玉瑾.多绳摩擦提升系统动力学研究与工程设计[M].北京:煤炭工业出版社,2008.
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[2]李菁.摩擦式矿井提升机动力学仿真及实验研究[D].洛阳:河南科技大学,2014.
[3]弗洛林斯基.矿井提升钢丝绳动力学[M].北京:煤炭工业出版社,1957.
[4]殷际英,彭兆行.多绳摩擦式提升机主导轮壳强度的理论及实验研究[J].东北工学院学报,1982(1):4 762.
[5]黄雪平.梅山矿业公司多绳摩擦式提升机首绳受力分析[J].金属矿山,2010(7):180-182.
[6]S K.The passage through resonance in a catenary-vertical cable hoisting system with slowly varying length[J].J Sound Vib,1997,208(2):243-269.
[7]Igor V.Andrianov,Jan Awrejcewicz.Dynamics of a string moving with time-varying speed[J].J.Sound Vib,2006,292(3-5):3-5.
[8]季晔,贾现召,张步斌,等.提升机主轴装置有限元数值模拟[J].煤矿机械,2007,28(7):32-34.
[9]贾现召,季晔,张蕾,等.大型多绳摩擦式提升机关键技术研究[J].煤炭工程,2008(3):12-15.