本文關(guān)鍵詞： 礦用 扒裝機(jī) 挖裝部件 裝載效率 動態(tài)特性　出處：《安徽理工大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：礦用扒裝機(jī)是井下巷道掘進(jìn)過程中渣石快速轉(zhuǎn)運(yùn)裝備,它采用將電動機(jī)機(jī)械能轉(zhuǎn)換為液壓系統(tǒng)的液壓能,來驅(qū)動各功能部件完成整機(jī)行走轉(zhuǎn)向、渣石扒取、大塊巖石破碎以及渣石轉(zhuǎn)運(yùn)等功能動作；其中挖裝部件為其最關(guān)鍵和最復(fù)雜的功能部件,它主要完成大臂升降、小臂收放、挖斗旋轉(zhuǎn)、破碎錘伸縮和挖裝部件回轉(zhuǎn)等一系列作業(yè)動作,其性能好壞直接決定了整機(jī)的扒渣效率和整機(jī)動態(tài)工作性能,對扒裝機(jī)的工作可靠性和穩(wěn)定性影響極大；裝載效率是衡量扒裝機(jī)性能好壞的重要參數(shù),如何提高挖裝部件的扒渣效率,合理優(yōu)化其扒掘軌跡路徑是解決這一難題的最終途徑和措施,長期以來一直備受業(yè)內(nèi)人士關(guān)注。隨著井下裝巖裝備技術(shù)的快速發(fā)展,目前礦用扒裝機(jī)也在不斷推陳出新,特別是對扒裝機(jī)的轉(zhuǎn)運(yùn)能力提出了更高要求。因此,扒裝機(jī)挖裝部件的裝載效率和動態(tài)特性研究具有極其重要的理論意義和經(jīng)濟(jì)價值。 本文基于扒裝機(jī)及其挖裝部件結(jié)構(gòu)和工況特點(diǎn)及工作原理分析與研究,運(yùn)用工程微分幾何及相關(guān)數(shù)學(xué)、運(yùn)動學(xué)及力學(xué)的理論,采用矩陣矢量法建立了扒裝機(jī)挖裝部件的運(yùn)動和力學(xué)的數(shù)學(xué)模型；通過對各關(guān)鍵接點(diǎn)的位置坐標(biāo)的求解,揭示了扒裝機(jī)挖裝部件的運(yùn)動規(guī)律和受力特點(diǎn)。通過對直接影響裝載效率部件挖斗齒尖點(diǎn)運(yùn)動軌跡的求解和優(yōu)化,給出了影響其裝載效率及動態(tài)特性的相關(guān)因素及主要因素,其中合理的扒掘路徑為主要影響因素,它與挖裝部件上各主要油缸的具體行程相關(guān)；得出了在不同大臂擺角下挖裝部件的扒掘軌跡長度計算公式,為扒掘軌跡優(yōu)化提供了理論支持�；诰伦鳂I(yè)的特殊工況及結(jié)構(gòu)的設(shè)計要求,提出了挖裝部件“高裝取率、等強(qiáng)度、高穩(wěn)定性”的設(shè)計理念,給出了其結(jié)構(gòu)的設(shè)計方法和相應(yīng)的制造技術(shù)。 本研究對象經(jīng)工程實(shí)際應(yīng)用的結(jié)果表明：所建立的模型合理科學(xué),所提出的設(shè)計與制造方法可行有效,所給出的影響因素準(zhǔn)確,對扒裝機(jī)的研發(fā)具有較好的技術(shù)指導(dǎo)意義和應(yīng)用價值,可為扒裝機(jī)的實(shí)際生產(chǎn)應(yīng)用和加速其國產(chǎn)化提供一定的理論依據(jù)。
[Abstract]:Mining bagging machine is a rapid transfer equipment of slag and stone in the process of underground roadway excavation. It uses the mechanical energy of motor to be converted into the hydraulic system hydraulic energy to drive all functional components to complete the whole machine walking and steering. Large rock fragmentation and slag and stone transport and other functional movements; Among them, the excavating part is the most important and complex functional component. It mainly completes a series of operations, such as lifting and lifting of the arm, retraction of the lower arm, rotation of the excavator, breaking hammer expansion and rotation of the excavating and assembling parts, and so on. Its performance directly determines the efficiency of slag removal and the dynamic working performance of the whole machine, and has a great impact on the reliability and stability of the bagging machine. Loading efficiency is an important parameter to measure the performance of the scrapping machine. How to improve the efficiency of dredging parts and how to optimize the path of the excavating track is the final way and measures to solve this problem. Along with the rapid development of underground rock loading equipment technology, the mining bagging machine is also constantly emerging, especially the transfer capacity of the bagging machine put forward higher requirements. The research on loading efficiency and dynamic characteristics of excavating and loading parts of bagging machine is of great theoretical significance and economic value. Based on the analysis and study of the structure, working condition and working principle of the pick-up machine and its excavating parts, this paper applies the theory of engineering differential geometry and related mathematics, kinematics and mechanics. The mathematical model of the movement and mechanics of the excavating and loading parts of the pick-up machine is established by using the matrix vector method. By solving the position coordinates of the key contact points, the motion law and the mechanical characteristics of the excavating and loading parts of the pick-up machine are revealed, and the calculation and optimization of the trajectory of the tip point of the excavated bucket teeth which directly affect the loading efficiency are carried out. The related factors and main factors affecting the loading efficiency and dynamic characteristics are given, among which the reasonable excavating path is the main influencing factor, which is related to the specific stroke of each main cylinder on the excavated parts. The formula for calculating the length of excavating track under different arm swing angles is obtained, which provides theoretical support for the optimization of excavating trajectory. Based on the special working conditions and structural design requirements of underground operation. The design concept of "high loading rate, equal strength and high stability" is put forward, and the design method of its structure and the corresponding manufacturing technology are given. The results of engineering application show that the established model is reasonable and scientific, the proposed design and manufacturing method is feasible and effective, and the influencing factors are accurate. It has good technical guiding significance and application value for the research and development of bagging machine. It can provide certain theoretical basis for practical production and application of bagging machine and accelerating its localization.
【學(xué)位授予單位】：安徽理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TD421

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