本文關鍵詞： 起重機 液壓系統(tǒng) 回轉(zhuǎn)機構(gòu) 仿真分析 故障檢修　出處：《燕山大學》2012年碩士論文　論文類型：學位論文

【摘要】：輪胎起重機是港口作業(yè)的重要設備。QLY50全液壓輪胎起重機，能夠很好地適應港口碼頭作業(yè)環(huán)境。在貨場通行路較窄，車位很小，甚至有時沒有標準的吊車作業(yè)位置時仍然能夠進行生產(chǎn)裝卸作業(yè)，具有很高的可靠性。因此本文對起重機的液壓系統(tǒng)進行分析和研究，解決了其在運行過程中出現(xiàn)的問題，研究結(jié)果具有重要的實際應用價值。 針對秦皇島港口用QLY50全液壓輪胎起重機長期高負荷運轉(zhuǎn)，導致液壓系統(tǒng)出現(xiàn)油液泄漏量大、油溫過高、液壓元件損壞等一系列問題，本文對起重機的主要技術性能和主要結(jié)構(gòu)進行分析，，對液壓系統(tǒng)及各液壓元件進行介紹，并重點分析了液壓泵回路、起升機構(gòu)回路、變幅機構(gòu)回路、行走機構(gòu)回路、回轉(zhuǎn)機構(gòu)回路和支腿回路等，為其檢修及改造提供依據(jù)。 在對回轉(zhuǎn)機構(gòu)進行分析的基礎上，利用AMEsim軟件對其進行仿真計算�；剞D(zhuǎn)機構(gòu)是起重機的重要機構(gòu)之一，其動態(tài)特性直接影響整個起重機的工作性能。通過液壓系統(tǒng)的仿真計算，分析系統(tǒng)的壓力動特性。通過合適地控制斜坡曲線，提高大轉(zhuǎn)動慣量工況下回轉(zhuǎn)作業(yè)的平穩(wěn)性，同時在轉(zhuǎn)動慣量小的工況具有較高的作業(yè)效率，增加整機作業(yè)的可靠性、安全性。還可以為指導輪胎起重機回轉(zhuǎn)液壓系統(tǒng)的改進、優(yōu)化和設計提供理論基礎。 根據(jù)起重機液壓系統(tǒng)的原理和工況，對液壓系統(tǒng)進行分析。結(jié)合現(xiàn)場的實際作業(yè)，找出液壓系統(tǒng)發(fā)生故障的原因，并提出相應的解決方案。同時針對鋼絲繩開股損壞和液壓油液油溫過高等問題，提出相應的改進方案。
[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.
【學位授予單位】：燕山大學
【學位級別】：碩士
【學位授予年份】：2012
【分類號】：TH213.6

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