QLY50全液压轮胎起重机液压系统分析

发布时间：2018-01-25 03:18

本文关键词： 起重机液压系统回转机构仿真分析故障检修　出处：《燕山大学》2012年硕士论文　论文类型：学位论文

【摘要】：轮胎起重机是港口作业的重要设备。QLY50全液压轮胎起重机，能够很好地适应港口码头作业环境。在货场通行路较窄，车位很小，甚至有时没有标准的吊车作业位置时仍然能够进行生产装卸作业，具有很高的可靠性。因此本文对起重机的液压系统进行分析和研究，解决了其在运行过程中出现的问题，研究结果具有重要的实际应用价值。针对秦皇岛港口用QLY50全液压轮胎起重机长期高负荷运转，导致液压系统出现油液泄漏量大、油温过高、液压元件损坏等一系列问题，本文对起重机的主要技术性能和主要结构进行分析，，对液压系统及各液压元件进行介绍，并重点分析了液压泵回路、起升机构回路、变幅机构回路、行走机构回路、回转机构回路和支腿回路等，为其检修及改造提供依据。在对回转机构进行分析的基础上，利用AMEsim软件对其进行仿真计算。回转机构是起重机的重要机构之一，其动态特性直接影响整个起重机的工作性能。通过液压系统的仿真计算，分析系统的压力动特性。通过合适地控制斜坡曲线，提高大转动惯量工况下回转作业的平稳性，同时在转动惯量小的工况具有较高的作业效率，增加整机作业的可靠性、安全性。还可以为指导轮胎起重机回转液压系统的改进、优化和设计提供理论基础。根据起重机液压系统的原理和工况，对液压系统进行分析。结合现场的实际作业，找出液压系统发生故障的原因，并提出相应的解决方案。同时针对钢丝绳开股损坏和液压油液油温过高等问题，提出相应的改进方案。
[Abstract]:Tire crane is an important equipment in port operation. QLY50 fully hydraulic tire crane can adapt to the port wharf working environment very well. In the cargo yard the passage road is narrow and the parking space is very small. Even when there is no standard crane working position, it can still carry on the production loading and unloading operation, has the very high reliability, therefore this paper carries on the analysis and the research to the crane hydraulic system. It solves the problems in the process of operation, and the research results have important practical application value. The QLY50 full hydraulic tire crane used in Qinhuangdao port has been running at high load for a long time, which leads to a series of problems such as large oil leakage, high oil temperature and damage to hydraulic components. In this paper, the main technical performance and main structure of the crane are analyzed, the hydraulic system and the hydraulic components are introduced, and the hydraulic pump circuit, hoisting mechanism loop and amplitude change mechanism loop are analyzed emphatically. The circuit of walking mechanism, the loop of rotary mechanism and the circuit of supporting leg provide the basis for its overhaul and renovation. On the basis of the analysis of the rotary mechanism, the simulation calculation is carried out by using AMEsim software, which is one of the important mechanisms of the crane. Its dynamic characteristics directly affect the working performance of the whole crane. Through the simulation calculation of the hydraulic system, the pressure dynamic characteristics of the system are analyzed, and the slope curve is properly controlled. It can improve the stability of rotary operation under the condition of large moment of inertia, at the same time, it has higher working efficiency in the case of small moment of inertia, and increases the reliability of the whole machine. Safety. It can also provide theoretical basis for improving, optimizing and designing the rotary hydraulic system of tire crane. According to the principle and working condition of the hydraulic system of crane, this paper analyzes the hydraulic system and finds out the cause of the malfunction of the hydraulic system in combination with the actual operation on the spot. At the same time, the corresponding improvement scheme is put forward to solve the problems of wire rope opening damage and the oil temperature of hydraulic oil being too high.
【学位授予单位】：燕山大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH213.6

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