本文選題：掘進機 + 虛擬樣機��； 參考：《中國地質(zhì)大學》2013年碩士論文

【摘要】：作為發(fā)展中國家,能源問題直接影響著我國的經(jīng)濟發(fā)展,由于我國擁有豐富煤炭資源儲量,要想解決能源短缺的問題,必須大力發(fā)展煤炭事業(yè),提高煤炭產(chǎn)量。隨著能源需求量的日益加大,煤礦生產(chǎn)規(guī)模在不斷地擴大,同時開采強度也越來越大,這就要求掘進機機械化智能化作業(yè),加快掘進速度。懸臂式掘進機廣泛應用于礦山井下巷道掘進、地下工程建設(shè)、水利涵洞掘進以及其它交通隧道掘進等,它的發(fā)展在很大程度上提高了巷道的掘進效率。掘進機有安全、高效和成巷質(zhì)量好等優(yōu)點,但也有造價大、結(jié)構(gòu)復雜、損耗較大等缺點。 EBZ-132型掘進機由煤炭科學研究總院太原分院設(shè)計制造。該機的主要特點是結(jié)構(gòu)緊湊、橫縱切割方式方便、可根據(jù)工況選用不同長度的刮板輸送機。由于該機適應性好、機身矮、重心低、工作平穩(wěn)、操作簡單、檢修方便等特點,因此可掘任意斷面形狀的巷道,可快速截割單向抗壓強度小于等于60兆帕的煤巖。根據(jù)EBZ-132型掘進機實際工況中的一些易損壞零部件,對其進行仿真分析并找出損壞原因,為掘進機以后的優(yōu)化設(shè)計提供一定的依據(jù)。 掘進機在截割過程中,截割頭的受力及其變化很大,其應力狀態(tài)及其應變都非常復雜,這些直接影響整機的截割性能、生產(chǎn)率和使用壽命。截齒和齒座是截割頭的重要組成部分,鎬形截齒由刀桿和安裝在刀桿上的刀頭兩部分組成,在截割過程中,其承受來自煤巖、夾石層、包裹體等的外載荷,由于其工作條件差、受力復雜、沖擊載荷大,這對截齒和齒座的強度和結(jié)構(gòu)等提出了更高的要求,因此有必要對截齒和齒座進行應力分析,了解其截割煤巖時的應力分布規(guī)律。 回轉(zhuǎn)機構(gòu)是懸臂式掘進機主要組成部件之一,它將懸臂機械與左右機架相連,可實現(xiàn)懸臂機構(gòu)的升降和左右回轉(zhuǎn)運動,并承受來自截割頭的復雜交變的沖擊載荷。在回轉(zhuǎn)平臺設(shè)計時,要使其具有承載能力大、慣性力小、運轉(zhuǎn)平穩(wěn)、足夠的強度和剛度、重心低等特點�；剞D(zhuǎn)平臺結(jié)構(gòu)設(shè)計的好壞,將直接影響到整機的工作效率和截割的平穩(wěn)性。 本文運用三維建模軟件SolidWorks建立縱軸式掘進機的三維簡化模型,并利用SolidWorks中自帶的靜態(tài)干涉檢驗功能檢查是否存在靜態(tài)干涉。然后將建立的三維模型保存為parasolid格式導入到ADAMS中,根據(jù)實際情況建立縱軸式掘進機的虛擬樣機。在ADAMS中對虛擬樣機進行運動學仿真,從而檢查虛擬樣機是否存在動態(tài)干涉。然后利用ADAMS/View模塊對掘進機截割頭進行動力學仿真分析,最后在SolidWorks Simulation中對掘進機的截齒與齒座、回轉(zhuǎn)機構(gòu)進行有限元分析�，F(xiàn)將本文的主要研究內(nèi)容總結(jié)如下： (1)運用三維建模軟件SolidWorks,根據(jù)研究重點,對縱軸式掘進機進行合理簡化并建立三維模型,然后利用SolidWorks中自帶的靜態(tài)干涉檢驗功能檢查是否存在靜態(tài)干涉,并對存在干涉的部分進行修改,直至不存在干涉。 (2)創(chuàng)建縱軸式掘進機虛擬樣機。將SolidWorks建立的三維簡化模型導入到ADAMS中,根據(jù)掘進機的實際運動情況,在ADAMS中添加約束;對回轉(zhuǎn)油缸和升降油缸的旋轉(zhuǎn)副添加驅(qū)動,完成虛擬樣機的創(chuàng)建。 (3)對創(chuàng)建的虛擬樣機進行運動學仿真,檢查虛擬樣機是否存在動態(tài)干涉。 (4)掘進機截割頭動力學仿真。利用ADAMS/View模塊對掘進機截割頭進行動力學仿真分析。 (5)掘進機關(guān)鍵零部件的有限元分析。在SolidWorks Simulation中對掘進機的截齒與齒座、回轉(zhuǎn)機構(gòu)進行了有限元分析,分析其關(guān)鍵部位的最大應力及節(jié)點位移圖,并提出改進方案,為進一步優(yōu)化設(shè)計提供依據(jù)。
[Abstract]:As a developing country, energy problems have a direct impact on the economic development of our country. Because of the rich reserves of coal resources in China, in order to solve the problem of energy shortage, we must vigorously develop the coal industry and improve the coal production. With the increasing demand for energy, the scale of coal mine production is constantly expanding, and the intensity of mining is also increasing. The bigger it is, this requires the mechanized intelligent operation of the roadheader to speed up the driving speed. The cantilever type boring machine is widely used in the mine tunnel excavation, the underground engineering construction, the water culvert tunneling and other traffic tunnels. The development of the roadheader has greatly improved the driving efficiency of the roadway. The roadheader is safe, efficient and alley. It has many advantages, such as good quantity, high cost, complex structure and large loss.
The EBZ-132 type boring machine is designed and made by the Taiyuan branch of the Coal Science Research Institute. The main features of the machine are compact structure, easy to cut and vertical cutting. The machine can choose different length scraper conveyor according to the working condition. Because of its adaptability, low body, low center of gravity, smooth operation, simple operation, easy to repair and so on, it can be cut arbitrarily. The roadway with face shape can quickly cut the coal rock with one way compression strength less than 60 MPa. According to some easy damage parts in the actual working condition of the EBZ-132 type boring machine, the simulation analysis is carried out and the cause of the damage is found out, which provides a certain basis for the optimization design of the roadheader.
During the cutting process, the force and change of the cutting head are very large, the stress state and the strain are very complex, which directly affect the cutting performance, productivity and service life. The cutting teeth and the teeth are an important part of the cutting head. The pick shape is composed of two parts of the cutter head and the cutter head mounted on the knife pole. During the process, it bears the external load from coal, rock layer and inclusions. Because of its poor working conditions, complex force and great impact load, it puts forward higher requirements for the strength and structure of the teeth and teeth. Therefore, it is necessary to analyze the stress of the teeth and the teeth and understand the stress distribution law when cutting the coal and rock.
The rotary mechanism is one of the main components of the cantilever type boring machine. It connects the cantilever machinery with the left and right frames, and can realize the lifting and left and right revolving movement of the cantilever mechanism, and bear the complex alternating impact load from the cutting head. In the design of the rotary platform, it has large bearing capacity, small inertia force, stable operation and strong enough. The structural design of slewing platform will directly affect the efficiency of the whole machine and the smoothness of the cutting.
In this paper, three-dimensional modeling software SolidWorks is used to establish a three-dimensional simplified model of a longitudinal shaft type roadheader, and the static interference inspection function of SolidWorks is used to check the existence of static interference. Then the established three-dimensional model is saved into the Parasolid format into the ADAMS, and the virtual sample of the longitudinal shaft type roadheader is established according to the actual situation. The virtual prototype is simulated in ADAMS to check the dynamic interference of the virtual prototype. Then the ADAMS/View module is used to simulate the dynamic simulation of the cutting head of the roadheader. Finally, the finite element analysis of the cutting gear and the gear seat and the rotary mechanism of the roadheader is carried out in the SolidWorks Simulation. The contents of the study are summarized as follows:
(1) using the three-dimensional modeling software SolidWorks, according to the research focus, the longitudinal shaft boring machine is reasonably simplified and the three-dimensional model is established. Then the static interference test function of SolidWorks is used to check the existence of static interference, and the interference parts are modified until there is no interference.
(2) create a virtual prototype of the longitudinal shaft boring machine. Introduce the three-dimensional simplified model established by SolidWorks into the ADAMS, add the constraints in ADAMS according to the actual movement of the roadheader, and add the driving to the rotating pair of the rotary cylinder and the lift cylinder to complete the creation of the virtual prototype.
(3) kinematic simulation of the virtual prototype is created to check whether there is dynamic interference in the virtual prototype.
(4) dynamic simulation of cutting head of roadheader. Dynamic simulation analysis of cutting head of roadheader is carried out by using ADAMS/View module.
(5) the finite element analysis of the key parts of the boring machine. In SolidWorks Simulation, the finite element analysis of the cutting gear and the gear seat and the rotary mechanism of the roadheader is carried out, the maximum stress and the node displacement diagram of the key parts are analyzed, and the improvement scheme is put forward to provide the basis for the further optimization of the design.
【學位授予單位】：中國地質(zhì)大學
【學位級別】：碩士
【學位授予年份】：2013
【分類號】：TU621

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本文編號：1955367