首绳快速更换装置液压控制系统研究

发布时间：2018-02-15 23:28

本文关键词： 首绳更换装置参数匹配电液调速 AMESim　出处：《太原理工大学》2014年硕士论文　论文类型：学位论文

【摘要】：我国《煤矿安全规程》第379条明确规定：摩擦提升机钢丝绳(即首绳)的使用期限不得超过2年。首绳快速更换装置是适应煤矿提升机首绳快速更换需要的关键装备,其液压控制系统性能直接影响换绳装置的正常运行,因此对首绳快速更换装置液压控制系统进行研究具有重要的意义。本文设计了一种首绳快速更换装置液压控制系统,主要由防跑绳装置液压控制系统、锁绳装置液压控制系统和步进送绳装置步进调速系统组成。本文在无绳工况条件下建立了防跑绳装置液压控制系统的电磁溢流阀和液压缸推移组件仿真模型。研究了系统压力对保压过程和泄压过程影响,分析了四缸不同步产生的原因,匹配了泄压换向阀额定流量参数；在穿绳工况下建立了液压缸锁绳负载模型,仿真研究了锁绳装置液压系统在锁绳过程动态性能。本文建立了锁绳装置液压控制系统的单向顺序阀模型和锁绳负载模型。匹配了系统压力和流量等参数,针对液压缸不同步产生液压胶管弯曲现象,提出采用节流口液压缸,并匹配节流口直径和先导式单向顺序阀的阻尼孔直径,对锁紧液压缸锁绳过程的动态性能进行了分析研究。设计了步进送绳装置的电液调速系统,选择伺服阀作为调速系统的核心元件,为了增加送绳液压缸空载伸出时的速度和减小重载送绳时的节流损失,设计了差动连接回路。通过PID控制器对电液调速系统进行控制,并通过动压反馈对其进行校正,得到了较好的调速性能。为了验证液压控制系统的参数匹配的合理性和仿真模型的正确性,进行了首绳快速更换装置实验室试验。试验结果表明,该液压控制系统具有较高的安全性能和较好的动态性能,而且仿真曲线与试验曲线基本一致,证明建立的仿真模型是正确的。
[Abstract]:Article 379 of our country's Coal Mine Safety regulations clearly stipulates that the service life of the friction hoist wire rope (that is, the head rope) shall not exceed 2 years. The quick replacement device of the first rope is the key equipment to meet the needs of the quick replacement of the head rope of the coal mine hoist. The performance of the hydraulic control system directly affects the normal operation of the rope changing device, so it is of great significance to study the hydraulic control system of the head rope quick replacement device. In this paper, a hydraulic control system is designed for the quick change of the first rope, which is mainly composed of the hydraulic control system of the anti-running rope device, the hydraulic control system of the locking rope device and the stepping speed regulating system of the stepping rope feeding device. In this paper, the simulation model of electromagnetic relief valve and hydraulic cylinder displacement module of hydraulic control system of anti-running rope device is established under the condition of cordless working condition. The influence of system pressure on the pressure keeping process and releasing process is studied. This paper analyzes the cause of the four cylinders out of sync, matches the rated flow parameters of the pressure relief reversing valve, establishes the load model of the lock rope of the hydraulic cylinder under the condition of rope piercing, and simulates the dynamic performance of the hydraulic system of the rope locking device during the rope locking process. In this paper, the unidirectional sequential valve model and the lock rope load model of the hydraulic control system of the lock rope device are established. The parameters such as pressure and flow rate of the system are matched. In view of the bending phenomenon of the hydraulic hose produced by the hydraulic cylinder out of sync, the throttle hydraulic cylinder is proposed. The dynamic performance of the locking process of the locking hydraulic cylinder was studied by matching the orifice diameter of throttle and the damping hole diameter of the pilot one-way sequential valve. The electro-hydraulic speed regulation system of the stepping rope feeding device is designed. The servo valve is selected as the key component of the speed control system. In order to increase the speed of the rope feeding hydraulic cylinder when it is no load and reduce the throttling loss when the heavy load is fed, The differential connection loop is designed, and the electro-hydraulic speed regulation system is controlled by PID controller, and corrected by dynamic voltage feedback, and the better speed regulation performance is obtained. In order to verify the rationality of the parameter matching of hydraulic control system and the correctness of the simulation model, the laboratory test of the rapid replacement device of the head rope is carried out. The experimental results show that, The hydraulic control system has higher safety performance and better dynamic performance, and the simulation curve is basically consistent with the test curve. It is proved that the established simulation model is correct.
【学位授予单位】：太原理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TD532;TH137

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