矿井提升机钢丝绳载荷动态检测研究

发布时间：2018-04-02 20:43

本文选题：钢丝绳载荷　切入点：液压连通装置　出处：《中国矿业大学》2015年硕士论文

【摘要】：矿井提升机是煤矿生产的关键设备,在保证煤矿安全生产中起着至关重要的作用。提升机工作过程中,会出现提升超载和钢丝绳载荷不平衡等问题。为保证矿井提升机的安全稳定运行,根据功能要求和现场工况,设计提升机载荷动态检测方案。在提升机钢丝绳液压式液压连通装置的平衡油缸无杆腔油管旁路上安装油压传感器,在平衡油缸上安装位移传感器,在箕斗顶部安装数据采集装置与上位机进行通信。为保证检测方案的准确性,对液压连通装置特性进行研究分析。首先,介绍钢丝绳液压连通装置的结构,详细阐述现如今各种摩擦模型及其机理,并分析平衡油缸内部存在的摩擦问题;确定提升机钢丝绳载荷动态检测系统的结构,以及各部分完成的主要功能,设计钢丝绳载荷动态检测总体方案;建立钢丝绳液压连通装置模型,分析液压缸的特性及钢丝绳张力平衡理论,建立液压缸动力学数学模型,分析液压缸运动特性以及连通特性;考虑液压缸非线性摩擦力特性,建立液压缸摩擦模型,分析张力检测产生误差原因。其次,分析连通装置关键部件液压缸的静态特性,以及载荷对液压缸稳定性的影响,理论计算连通装置工作过程中管路中的压力损失;利用AMESim液压仿真软件中的液压库,分别建立液压缸仿真模型与液压连通装置仿真模型,分析液压连通装置动态特性。设计平衡油缸摩擦试验平台,包括试验架结构的设计、液压系统的设计以及上位机采集系统的设计;设计试验方案,使油缸在不同压力、不同流量下进行试验,根据试验数据以及摩擦模型,确定了压力、速度与摩擦力的关系,依照平衡油缸油压与钢丝绳张力的动态关系,对钢丝绳载荷检测进行动态补偿的方法。最后,根据钢丝绳载荷的检测补偿方案,设计钢丝绳载荷检测上位机Lab VIEW程序,包括钢丝绳载荷数据的读取与存储等等,提高钢丝绳载荷检测的精度与可靠性。
[Abstract]:Mine hoist is the key equipment in coal mine production and plays an important role in ensuring the safety of coal mine production.In the working process of hoist, problems such as lifting overload and unbalance of wire rope load will appear.In order to ensure the safe and stable operation of mine hoist, the dynamic detection scheme of hoist load is designed according to the function requirements and field working conditions.The oil pressure sensor is installed on the bypass circuit of the rod-less tubing in the balance cylinder of the hydraulic hydraulic communication device of the hoist wire rope, the displacement sensor is installed on the balance oil cylinder, and the data acquisition device is installed at the top of the skip to communicate with the upper computer.In order to ensure the accuracy of the testing scheme, the characteristics of hydraulic connectors are studied and analyzed.First of all, the structure of hydraulic connecting device of wire rope is introduced, various friction models and their mechanism are described in detail, the friction problems existing in the balance cylinder are analyzed, and the structure of dynamic testing system for steel rope load of hoist is determined.As well as the main functions of each part, the overall scheme of dynamic testing of steel wire rope load is designed, and the model of wire rope hydraulic connecting device is established, the characteristics of hydraulic cylinder and the theory of wire rope tension balance are analyzed, and the dynamic mathematical model of hydraulic cylinder is established.The characteristics of hydraulic cylinder motion and connectivity are analyzed, and the friction model of hydraulic cylinder is established considering the nonlinear friction characteristics of hydraulic cylinder, and the causes of error in tension detection are analyzed.Secondly, the static characteristics of the hydraulic cylinder, the key component of the connected device, and the influence of the load on the stability of the hydraulic cylinder are analyzed, and the pressure loss in the pipeline during the working process of the connected device is calculated theoretically, and the hydraulic reservoir in the hydraulic simulation software of AMESim is used.The hydraulic cylinder simulation model and the hydraulic communication device simulation model are established, and the dynamic characteristics of the hydraulic connected device are analyzed.A balanced oil cylinder friction test platform is designed, including the design of the structure of the test stand, the design of the hydraulic system and the design of the upper computer collection system, and the design of the test scheme, which enables the cylinder to carry out the test under different pressure and flow.According to the test data and friction model, the relationship between pressure, velocity and friction force is determined. According to the dynamic relationship between the oil pressure of the balanced cylinder and the tension of the wire rope, the method of dynamic compensation for the load detection of the wire rope is presented.Finally, according to the scheme of wire rope load detection and compensation, the Lab VIEW program of the upper computer for wire rope load detection is designed, including the reading and storing of wire rope load data, etc., to improve the accuracy and reliability of wire rope load detection.
【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

【参考文献】