本文選題：翻車機　切入點：液壓　出處：《燕山大學(xué)》2012年碩士論文

【摘要】：翻車機是港口煤炭運輸?shù)闹匾O(shè)備。隨著大秦鐵路擴能改造，原用于解列工藝的C63、C70等車型逐步被不能解列作業(yè)的C80系列敞車所替換。秦皇島港煤一、二期原翻車機已經(jīng)不能適應(yīng)C80系列新車型的變化，必須從工藝改進(jìn)出發(fā)，對機電液整體進(jìn)行改造。 煤一期翻車機改造兼顧了對不解列C80車型和解列C70系列車型的翻卸工藝，針對直流電機變流調(diào)速控制不穩(wěn)定、精度低、故障率高、制約生產(chǎn)情況進(jìn)行技術(shù)改進(jìn)，選用泵控液壓馬達(dá)閉式系統(tǒng)作為驅(qū)動裝置，以比例變量技術(shù)和轉(zhuǎn)速反饋實現(xiàn)轉(zhuǎn)速控制，工藝過程通過PLC實現(xiàn)自動化，通過現(xiàn)場總線、以太網(wǎng)技術(shù)組建工業(yè)控制網(wǎng)絡(luò)，以人機界面交互技術(shù)實現(xiàn)使用和管理。本文重點研究了泵控液壓馬達(dá)閉式系統(tǒng)的液壓控制原理，選型、安裝、調(diào)試和維護(hù)。 煤二期翻車機適卸C80項目，在原有土建基礎(chǔ)大體不變的情況下，進(jìn)行機械設(shè)計。原壓車、靠車動作都通過液壓系統(tǒng)實現(xiàn)，存在污染嚴(yán)重，可靠性差，壓車靠車速度調(diào)節(jié)功能不完善、油缸本身結(jié)構(gòu)易損壞、管路易老化等問題，改造時進(jìn)行針對性的技術(shù)改進(jìn)，，提高了可靠性，保障了生產(chǎn)。 改造后的煤一、二期翻車機系統(tǒng)在生產(chǎn)中得以應(yīng)用，取得了預(yù)期的效果。
[Abstract]:The dumper is an important equipment for coal transportation in the port. With the expansion and transformation of the Daqin Railway, the C63C70 and other models used in the unwinding process have been gradually replaced by the C80 series open car which cannot be unlisted. Qinhuangdao Port Coal I, The second stage original dumper can not adapt to the change of C80 series new model, so the electromechanical and hydraulic system must be reformed from the point of view of technological improvement. The transformation of the first stage coal dump machine has taken into account the technology of turning over and unloading the inexplicable C80 models and the C70 series models, aiming at the unstable control of DC motor variable current speed regulation, low precision, high failure rate, and technical improvement on restricting the production situation. The closed system of pump controlled hydraulic motor is selected as the driving device. The speed control is realized by proportional variable technology and speed feedback. The process is automated by PLC, and the industrial control network is constructed by field bus and Ethernet technology. This paper focuses on the hydraulic control principle, selection, installation, debugging and maintenance of the pump controlled hydraulic motor closed system. Under the condition that the original civil construction foundation is basically unchanged, the mechanical design is carried out in the C80 project of the second-stage coal dump. The original pressure car and the vehicle action are realized through the hydraulic system, and there is serious pollution and poor reliability. The adjustment function of the speed of the press car is not perfect, the structure of the cylinder itself is easy to be damaged, the pipe is easy to be aged, and so on. During the transformation, the pertinence technical improvement is carried out, which improves the reliability and ensures the production. The reformed first and second coal dumper system has been applied in production, and the expected effect has been obtained.
【學(xué)位授予單位】：燕山大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2012
【分類號】：TH237.3

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