摘要
超深矿井缠绕式提升机钢丝绳之间的缠绕同步性保证对于提升系统的安全可靠运行具有重要作用。针对卷筒两缠绳区在钢丝绳缠绕过程中所引起的缠绕变形不同步导致的两钢丝绳间张力差异问题,考虑两钢丝绳长度差异与张力差异之间的相互影响,利用弹性基础梁理论对厚壳弹支结构卷筒在不同受力情况下的径向变形方程进行了推导,建立了钢丝绳动态张力、钢丝绳长度差异与卷筒径向变形三者相耦合的理论计算模型。通过求解不同卷筒结构在钢丝绳缠绕过程中的两钢丝绳间张力差异最大值,总结得出了卷筒的不同出绳方式和不同支轮布置位置对两钢丝绳间张力差异的影响规律,并通过有限元分析软件验证了理论计算模型的正确性。结果表明:超深矿井双绳多层缠绕式提升机卷筒结构对钢丝绳间的提升同步性具有重要影响,卷筒出绳方式与支轮布置位置的不合理组合会导致两钢丝绳间张力差异超过10%,危及提升系统的运行安全;卷筒左右与右左出绳方式下的两缠绳区变形同步性在左、右轮孔距离分别相等时是相同的;卷筒同左与同右出绳方式下的两缠绳区变形同步性在左、右支轮布置位置互为对称时是相同的;卷筒在左右或右左出绳方式下,左、右支轮对称布置时的卷筒结构所引起的两钢丝绳间张力差异最小。
The guarantee of the winding synchronization of the wire ropes in the ultra-deep mine winding hoist plays an indispensable role in the safe and reliable operation of its system.Aiming at the wire ropes’tension dif-ference caused by the unsynchronized winding deformation between the two rope areas of the drum,the interaction between the length and tension of the two ropes was considered,the beam on elastic foundation theory was used to derive the radial deformation equations of the thick-shell with elastic supporting wheel drum under different stress conditions,and then the coupling calculation model of the wire ropes dynamic tension,the wire ropes’tension difference and the drum deformation were established.By calculating the wire ropes’maximum tension differences of different drum structures during winding,the influence law of the different wire ropes’fixation modes and the positions of the supporting wheels on the wire ropes’tension differences were summarized.The correctness of the theoretical calculation model was also verified by finite element analysis software.The results show that the drum structure has a great influence on the synchronization of double-rope multi-layer winding wire ropes.The unreasonable combinations of wire ropes’fixation modes and the positions of the supporting wheels will cause the wire ropes’tension difference to exceed 10%,which will endanger the operation safety of the lifting system.The winding synchronization of the wire ropes in the left-right and right-left wire ropes’fixation modes is the same when the distances of the left supporting wheel to the left wire rope fixing hole and the right supporting wheel to the right wire rope fixing hole are correspondingly equal.The winding synchronization of the wire ropes in the left-left and right-right wire ropes’fixation modes is the same when two supporting wheels symmetrically arranged.The drum structures with the smallest wire ropes’tension difference is left-right or right-left wire ropes’fixation mode with tw
作者
邓勇
龚宪生
唐涛
王海隆
DENG Yong;GONG Xiansheng;TANG Tao;WANG Hailong(The State Key Laboratory of Mechanical Transmission,Chongqing University,Chongqing 400044,China;College of Mechanical Engineering,Chongqing University,Chongqing 400044,China)
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
2020年第11期3952-3960,共9页
Journal of China Coal Society
基金
国家重点基础研究发展计划(973)资助项目(2014CB049403)。
关键词
双绳缠绕
提升机
卷筒变形
张力差
出绳方式
支轮
double-rope winding
hoist
drum deformation
tension difference
wire ropes’fixation mode
supporting wheel
