落地式多绳摩擦提升机钢丝绳绳弦横向振动研究

发布时间：2018-03-13 11:26

本文选题：落地式摩擦提升机　切入点：提升钢丝绳　出处：《中国矿业大学》2015年硕士论文　论文类型：学位论文

【摘要】：落地式摩擦提升机钢丝绳持续剧烈振动,不仅影响钢丝绳和提升设备的使用寿命,而且影响到提升机运行的稳定性和安全性。因此,本文以姚桥煤矿2#主井提升机绳弦为研究对象,采用理论、仿真与实验测试相结合的研究方法,系统地研究提升机的弦振动,为该矿提升系统的安全可靠运行提供技术支撑,并在一定程度上为其他矿提供理论依据和经验支持。首先,基于连续分布参数连续模型和Hamilton原理建立了钢丝绳横向振动模型,并运用Galerkin截断法求数值解,分别对不同工况下钢丝绳横向振动进行数值仿真,结合现场实验测试,验证了理论模型和求解方法的有效性。其次,建立了绳弦基于多体动力学ADAMS的仿真模型。从仿真精度和仿真时间考虑,基于悬链线理论,对钢丝绳仿真段数划分进行了探讨;根据前文分析的提升钢丝绳横向振动激励源,添加不同的激励形式进行仿真,并结合现场实验测试验证了仿真模型的正确性。再次,探讨分析提升机现场动态测试方案,并对测试数据进行分析处理,结合理论分析和仿真结果得出弦振动呈现出明显的共振和拍振现象,且横向振动的主要影响因素为天轮偏摆、绳弦张力和提升机运行速度。最后,根据理论分析、仿真与实验测试结果,从考虑减小弦振动幅度出发,提出对天轮偏摆进行动态监测;从张力对绳弦振频的影响出发,提出定期检修调绳器使得钢丝绳张力平衡。
[Abstract]:Floor type friction hoist rope for severe vibration, not only affect the rope and enhance the service life of the equipment, but also affect the stability and safety of a hoisting machine running. Therefore, this article in Yaoqiao Coal Mine 2# main shaft hoisting rope string as the research object, the research theory, simulation method combined with experiment and testing. Systematic study on lifting string vibration machine, to provide technical support for the safe and reliable operation of the mine hoist system, and to a certain extent for other mines and provide a theoretical basis and empirical support. First of all, the wire rope model of transverse vibration of continuous distribution continuous parameter model and Hamilton based on the principle, and the use of Galerkin method for numerical truncation the solution, respectively. Numerical simulation of wire rope vibration under different operating conditions, combined with field test, verify the validity of the theoretical model and the solving method. Secondly, established Sheng Xianji The simulation model of multibody dynamics in ADAMS. Considering the simulation accuracy and simulation time, based on the catenary theory, simulation of wire rope segments division is discussed according to the lifting wire rope; transverse vibration analysis of the excitation source, adding different incentives in the form of simulation, and combining with the experimental tests verify the correctness of the simulation model again, analysis of hoist field dynamic test scheme and the test data are analyzed, according to the theoretical analysis and simulation results show that the string vibration shows obvious resonance and beat vibration phenomenon, and the main influence factors for the transverse vibration of the wheel swing rope, string tension and hoist speed. Finally, according to the theory of analysis, simulation and experimental results, considering the decrease of the amplitude of vibration, wheel yaw dynamic monitoring; from the tension on the rope string vibration frequency the influence of the Regularly overhaul the rope regulator to balance the tension of the wire rope.

【学位授予单位】：中国矿业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD532

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