本文關(guān)鍵詞：基于彈性耦合的三激振電機(jī)橢圓振動(dòng)篩動(dòng)力學(xué)研究　出處：《西南石油大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 振動(dòng)篩 彈性耦合 自同步特性 實(shí)驗(yàn)測試

【摘要】：振動(dòng)篩是用于物料的篩分、輸送、脫水等的常用機(jī)械,已廣泛應(yīng)用于礦山、冶金、食品、能源等領(lǐng)域。在石油鉆井工程作業(yè)中,振動(dòng)篩作為第一級(jí)固控設(shè)備,篩分出大量的固相,具有不可替代的作用。目前,振動(dòng)篩逐漸朝著大型化、高強(qiáng)度、大處理量等方向發(fā)展。同時(shí),振動(dòng)篩多激振源、多層篩網(wǎng)的發(fā)展是一個(gè)較熱的趨勢。本文針對(duì)目前的三激振電機(jī)自同步橢圓振動(dòng)篩存在的缺陷,提出了一種新型三激振電機(jī)橢圓振動(dòng)篩,實(shí)現(xiàn)了同向旋轉(zhuǎn)的兩激振電機(jī)0°附近的同相同步。對(duì)于該振動(dòng)篩系統(tǒng),本文從理論分析、數(shù)值計(jì)算、計(jì)算機(jī)模擬以及實(shí)驗(yàn)驗(yàn)證上開展了一系列的研究。主要工作如下:(1)基于彈性耦合同向旋轉(zhuǎn)的雙激振電機(jī)振動(dòng)系統(tǒng)和彈性耦合的三激振電機(jī)橢圓振動(dòng)篩系統(tǒng)的物理模型,應(yīng)用拉格朗日方程建立了系統(tǒng)的動(dòng)力學(xué)方程,并用龐加萊法求解出了系統(tǒng)在各個(gè)方向的近似穩(wěn)態(tài)響應(yīng),推導(dǎo)出了系統(tǒng)的平衡方程和穩(wěn)定性準(zhǔn)則。(2)通過將工程參數(shù)代入到平衡方程和穩(wěn)定性準(zhǔn)則,對(duì)系統(tǒng)相位差進(jìn)行了數(shù)值計(jì)算。在自同步狀態(tài)下,定量地分析了系統(tǒng)穩(wěn)定的相位差和同步穩(wěn)定性受一些參數(shù)的影響。尤其是耦合單元的剛度系數(shù)、激振電機(jī)的安裝位置等參數(shù)。(3)為了驗(yàn)證理論推導(dǎo)和數(shù)值計(jì)算的正確性。本文在Matlab/Simulink板塊中搭建相應(yīng)的機(jī)電耦合模型,對(duì)振動(dòng)系統(tǒng)的微分方程進(jìn)行了計(jì)算機(jī)動(dòng)態(tài)仿真,進(jìn)一步揭示了系統(tǒng)自同步同步機(jī)理。(4)根據(jù)本文提出的彈性耦合的三激振電機(jī)自同步橢圓振動(dòng)篩模型,設(shè)計(jì)了實(shí)驗(yàn)樣機(jī),進(jìn)行了加工組裝調(diào)試,通過振動(dòng)測試儀器和高速攝像機(jī)對(duì)系統(tǒng)進(jìn)行了同步性實(shí)驗(yàn)測試,驗(yàn)證了理論分析、計(jì)算機(jī)模擬的正確性。上述的研究工作為開發(fā)設(shè)計(jì)大型高效的平動(dòng)橢圓振動(dòng)篩提供了強(qiáng)有力的支撐。
[Abstract]:Vibrating screen is commonly used for material screening, conveying, dehydration and so on. It has been widely used in mining, metallurgy, food, energy and other fields. In petroleum drilling engineering, vibrating screen is the first stage solid control equipment. At present, the vibrating screen is gradually developing towards the direction of large scale, high intensity and large handling capacity. At the same time, the vibrating screen has many exciting sources. The development of multi-layer screen is a hot trend. Aiming at the defects of the current self-synchronous elliptical vibrating screen of three-excited motor, a new type of elliptical vibrating screen of three-excitation motor is proposed in this paper. In this paper, the in-phase synchronization of two exciting motors with coaxial rotation near 0 擄is realized. The theoretical analysis and numerical calculation of the vibrating screen system are presented in this paper. A series of studies have been carried out on computer simulation and experimental verification. The physical models of the double exciting motor vibration system based on elastic coupling corotating and the elliptic vibrating screen system of three exciting motor based on elastic coupling. The dynamic equation of the system is established by using Lagrange equation, and the approximate steady state response of the system in all directions is solved by using the Poincare method. The equilibrium equation and stability criterion of the system are derived. (2) the phase difference of the system is numerically calculated by inserting the engineering parameters into the equilibrium equation and the stability criterion. The stable phase difference and synchronization stability of the system are quantitatively analyzed by some parameters, especially the stiffness coefficient of the coupling element. In order to verify the correctness of theoretical derivation and numerical calculation, this paper builds the corresponding electromechanical coupling model in Matlab/Simulink plate. The dynamic simulation of differential equation of vibration system is carried out, and the self-synchronization mechanism of the system is further revealed. According to the elastic coupling model proposed in this paper, the self-synchronous elliptical vibrating screen model of three-excitation motor is proposed. The experimental prototype was designed, the machining and debugging was carried out, and the synchronous experimental test of the system was carried out by vibration testing instrument and high-speed camera, and the theoretical analysis was verified. The above work provides a strong support for the development and design of a large and efficient elliptical vibrating screen.
【學(xué)位授予單位】：西南石油大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TH237.6

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本文編號(hào)：1427936