本文選題：鋼絲繩載荷　切入點：液壓連通裝置　出處：《中國礦業(yè)大學(xué)》2015年碩士論文

【摘要】：礦井提升機是煤礦生產(chǎn)的關(guān)鍵設(shè)備,在保證煤礦安全生產(chǎn)中起著至關(guān)重要的作用。提升機工作過程中,會出現(xiàn)提升超載和鋼絲繩載荷不平衡等問題。為保證礦井提升機的安全穩(wěn)定運行,根據(jù)功能要求和現(xiàn)場工況,設(shè)計提升機載荷動態(tài)檢測方案。在提升機鋼絲繩液壓式液壓連通裝置的平衡油缸無桿腔油管旁路上安裝油壓傳感器,在平衡油缸上安裝位移傳感器,在箕斗頂部安裝數(shù)據(jù)采集裝置與上位機進行通信。為保證檢測方案的準確性,對液壓連通裝置特性進行研究分析。首先,介紹鋼絲繩液壓連通裝置的結(jié)構(gòu),詳細闡述現(xiàn)如今各種摩擦模型及其機理,并分析平衡油缸內(nèi)部存在的摩擦問題;確定提升機鋼絲繩載荷動態(tài)檢測系統(tǒng)的結(jié)構(gòu),以及各部分完成的主要功能,設(shè)計鋼絲繩載荷動態(tài)檢測總體方案;建立鋼絲繩液壓連通裝置模型,分析液壓缸的特性及鋼絲繩張力平衡理論,建立液壓缸動力學(xué)數(shù)學(xué)模型,分析液壓缸運動特性以及連通特性;考慮液壓缸非線性摩擦力特性,建立液壓缸摩擦模型,分析張力檢測產(chǎn)生誤差原因。其次,分析連通裝置關(guān)鍵部件液壓缸的靜態(tài)特性,以及載荷對液壓缸穩(wěn)定性的影響,理論計算連通裝置工作過程中管路中的壓力損失;利用AMESim液壓仿真軟件中的液壓庫,分別建立液壓缸仿真模型與液壓連通裝置仿真模型,分析液壓連通裝置動態(tài)特性。設(shè)計平衡油缸摩擦試驗平臺,包括試驗架結(jié)構(gòu)的設(shè)計、液壓系統(tǒng)的設(shè)計以及上位機采集系統(tǒng)的設(shè)計;設(shè)計試驗方案,使油缸在不同壓力、不同流量下進行試驗,根據(jù)試驗數(shù)據(jù)以及摩擦模型,確定了壓力、速度與摩擦力的關(guān)系,依照平衡油缸油壓與鋼絲繩張力的動態(tài)關(guān)系,對鋼絲繩載荷檢測進行動態(tài)補償?shù)姆椒āＷ詈?根據(jù)鋼絲繩載荷的檢測補償方案,設(shè)計鋼絲繩載荷檢測上位機Lab VIEW程序,包括鋼絲繩載荷數(shù)據(jù)的讀取與存儲等等,提高鋼絲繩載荷檢測的精度與可靠性。
[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.
【學(xué)位授予單位】：中國礦業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TD532

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本文編號：1702025