本文關(guān)鍵詞：纏繞式提升機(jī)主軸裝置動(dòng)力學(xué)特性研究　出處：《太原理工大學(xué)》2017年碩士論文　論文類(lèi)型：學(xué)位論文

  更多相關(guān)文章： 單繩纏繞式提升機(jī) 主軸裝置 ANSYS Workbench 靜力學(xué)分析 動(dòng)力學(xué)分析

【摘要】：礦井提升機(jī)是礦山運(yùn)輸與提升系統(tǒng)中的重要設(shè)備,提升機(jī)一旦發(fā)生事故,將會(huì)對(duì)礦山生產(chǎn)造成重大的財(cái)產(chǎn)損失,所以礦井提升機(jī)性能與質(zhì)量的優(yōu)劣對(duì)采礦效率和人員的安全具有重要的影響。其中主軸裝置是提升機(jī)承受載荷與傳遞動(dòng)力的關(guān)鍵部件,因此,主軸裝置的動(dòng)態(tài)特性與提升機(jī)的健康狀態(tài)有著很密切的聯(lián)系。因此,以提升機(jī)主軸裝置為研究對(duì)象,以提升機(jī)的可靠狀態(tài)監(jiān)測(cè)為研究目標(biāo),開(kāi)展主軸裝置靜力學(xué)分析與動(dòng)力學(xué)分析方面的動(dòng)態(tài)特性研究。研究成果將為提升機(jī)主軸裝置故障診斷提供理論基礎(chǔ)和技術(shù)手段,提高礦井提升機(jī)狀態(tài)監(jiān)測(cè)的可靠性。本文以2JTP-1.2×0.8單繩纏繞式礦井提升機(jī)的主軸裝置為研究對(duì)象,分別進(jìn)行了四方面的研究,包括靜力學(xué)分析、模態(tài)分析、諧響應(yīng)分析與瞬態(tài)動(dòng)力學(xué)分析并進(jìn)行了試驗(yàn)研究。首先,對(duì)提升機(jī)主軸裝置進(jìn)行結(jié)構(gòu)靜力學(xué)分析。在分析結(jié)果中查看主軸裝置的應(yīng)力應(yīng)變特性,得到各工況下各零件的最大應(yīng)力值與變形量,然后與各零件材料的許用應(yīng)力進(jìn)行對(duì)比,進(jìn)行強(qiáng)度的校核,再通過(guò)查看主軸的最大變形量對(duì)主軸進(jìn)行剛度校核。通過(guò)對(duì)靜力學(xué)分析結(jié)果的分析與對(duì)各零件的校核,得出各零件均滿足強(qiáng)度要求并且主軸滿足剛度要求。其次,為了避免主軸裝置發(fā)生共振或者以特定的頻率進(jìn)行振動(dòng),對(duì)主軸裝置進(jìn)行模態(tài)分析。從分析結(jié)果得到了主軸裝置的前6階固有頻率與所對(duì)應(yīng)的主振型。然后對(duì)主軸裝置進(jìn)行諧響應(yīng)分析,確定結(jié)構(gòu)在承受不同頻率成分的載荷時(shí)的穩(wěn)態(tài)響應(yīng)。分析結(jié)果顯示提升機(jī)主軸裝置的敏感頻率范圍在44Hz,64Hz和156Hz附近,接近于模態(tài)分析中的第1階,第3階和第5階固有頻率,提升機(jī)工作時(shí)應(yīng)避免該頻率段的激勵(lì)。然后,分別對(duì)主軸裝置在正常運(yùn)行狀態(tài)下與卡罐狀態(tài)下進(jìn)行瞬態(tài)動(dòng)力學(xué)分析。在正常運(yùn)行狀態(tài)下,卷筒的最大應(yīng)力值為167 Mpa,變化規(guī)律與作用在筒殼表面的均布?jí)毫Φ淖兓?guī)律相似,主軸正常運(yùn)行狀態(tài)下的最大應(yīng)力保持在40Mpa左右,變化規(guī)律與作用在卷筒上的鋼絲繩拉力造成的扭矩的變化規(guī)律相似。當(dāng)發(fā)生卡罐事故時(shí),卷筒與主軸的應(yīng)力均有一定程度的增大,主軸的最大應(yīng)力值增大的程度相對(duì)較大。兩次分析結(jié)果顯示主軸裝置在正常運(yùn)行時(shí)與卡罐斷繩時(shí)均可以保證安全穩(wěn)定的運(yùn)行。最后,對(duì)主軸裝置進(jìn)行振動(dòng)特性的研究。先對(duì)主軸裝置進(jìn)行運(yùn)行速度為0.5m/s、1m/s、1.5m/s、2m/s與2.5m/s的瞬態(tài)動(dòng)力學(xué)分析,查看運(yùn)行過(guò)程中主軸裝置的振動(dòng)特性。然后搭建試驗(yàn)臺(tái),在提升機(jī)試驗(yàn)臺(tái)上進(jìn)行主軸裝置振動(dòng)特性的試驗(yàn)研究,利用加速度傳感器拾取軸承座位置的振動(dòng)加速度信號(hào)。通過(guò)將仿真分析與試驗(yàn)對(duì)比分析發(fā)現(xiàn),兩種方式所得到振動(dòng)加速度的幅值變化規(guī)律一致,振動(dòng)加速度的幅值隨提升機(jī)運(yùn)行速度的增大而增大,從而驗(yàn)證了仿真分析的正確性。所以,對(duì)主軸裝置振動(dòng)特性的進(jìn)一步研究可以通過(guò)仿真分析完成。
[Abstract]:Mine hoist is the important equipment in mine transportation and lifting system, lifting machine once the accident, will cause serious loss of the property of mine production, has an important influence so mine hoist performance and quality of the mining efficiency and the safety of personnel. The spindle unit is the key part of hoist, loading and transfer power therefore, and improve the dynamic characteristics of spindle device of machine health status has a very close relationship. Therefore, in order to improve the machine spindle device as the research object, in order to improve the reliability of monitoring machine as the research object, research on dynamic characteristic analysis and dynamic analysis of spindle device statics. The research results will provide the theoretical basis and the technical means of fault diagnosis device for lifting machine spindle, improve the reliability of mine hoist monitoring. Based on the 2JTP-1.2 * 0.8 single rope winding mine Lifting machine spindle device as the research object, were studied in four aspects, including static analysis, modal analysis, harmonic response analysis and transient response analysis and experiments were carried out. Firstly, structural statics analysis on the main shaft of the hoist. The stress strain characteristics of check spindle apparatus in results, obtained the maximum stress and deformation of the parts under different working conditions, and then the parts of the allowable stress of the strength check, the maximum deformation and stiffness of the spindle by viewing the check on the spindle. Based on the analysis results of the static analysis and the parts of the check, the parts satisfies the requirements of strength and stiffness of the spindle meet the requirements. Secondly, in order to avoid the occurrence of resonance or vibration of the spindle device at a specific frequency, modal analysis of the spindle apparatus. From the results of the analysis The main shaft device of the first 6 natural frequencies and corresponding vibration modes. Then the harmonic response analysis of spindle unit, determine the structure response under steady-state load bearing different frequency components. The analysis results show that the device of the elevator shaft of the sensitive frequency range at 44Hz, near 64Hz and 156Hz, first order close to in modal analysis, third order and fifth order natural frequency, the hoist should avoid the work frequency excitation. Then, respectively on the main shaft device under normal operation condition and can card the transient dynamic analysis. In the normal operation state, the drum of the maximum stress value is 167 Mpa, change similar changes in the law and effect of uniform pressure cylinder shell surface, the maximum stress of about 40Mpa in the spindle under normal operating conditions, the change of wire rope tension on the drum of the variation and effect caused by the torque The law is similar. When the card tank accident, the drum and the spindle stress increases to a certain extent, the spindle maximum stress value increases the degree is relatively large. Two analysis results showed that the main shaft device during normal operation with the card tank when the wire rope is broken can ensure the safe and stable operation. Finally, the research of vibration the characteristics of the main shaft device. The spindle device speed is 0.5m/s, 1m/s, 1.5m/s, 2m/s and 2.5m/s transient dynamics analysis of the vibration characteristics of spindle view during the operation of device. Then the experiment, experimental study on vibration characteristics of spindle device in hoist test bench, using vibration acceleration signal of the acceleration sensor pick up the bearing position. Through the comparative analysis of simulation analysis and experiment showed that changes in the same two ways to the amplitude of vibration acceleration, the amplitude of vibration acceleration with The increase of the speed of the hoist increases the correctness of the simulation analysis. Therefore, further research on the vibration characteristics of the spindle device can be done by simulation analysis.

【學(xué)位授予單位】：太原理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類(lèi)號(hào)】：TD534

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