本文選題：雙輪銑槽機(jī)銑槽裝置　切入點(diǎn)：電驅(qū)動(dòng)　出處：《長(zhǎng)安大學(xué)》2017年碩士論文

【摘要】：液壓雙輪銑槽機(jī)正逐步替代液壓抓斗和旋挖鉆機(jī)施工地下連續(xù)墻以滿足嚴(yán)苛的防滲要求和施工工藝要求,成為品質(zhì)連續(xù)墻施工的主要裝備。但當(dāng)施工深度大于40m時(shí),絞盤上纏繞很長(zhǎng)的液壓軟管造成很大的功率損失并產(chǎn)生大量的熱,讓機(jī)器處在高耗低效的狀態(tài)。另外軟管散熱性能差,熱平衡的溫度會(huì)升高,將帶來(lái)一系列危害。據(jù)此我們研究通過(guò)絞盤收放電纜的電驅(qū)雙輪銑槽機(jī)。本文完成了雙輪銑槽機(jī)銑槽裝置電驅(qū)動(dòng)與液壓驅(qū)動(dòng)的比較研究。首先,參考中型液壓雙輪銑槽機(jī)參數(shù)完成驅(qū)動(dòng)電機(jī)選型計(jì)算,由于電機(jī)的機(jī)械特性軟,確定采用雙電機(jī)并聯(lián)驅(qū)動(dòng)的方案;同時(shí)根據(jù)各頻率下電機(jī)機(jī)械特性確定變速范圍,再通過(guò)輸出與輸入扭矩比值和速度比值計(jì)算傳動(dòng)比;其次,通過(guò)比較確定轉(zhuǎn)差頻率矢量控制的方法,并在MATLAB/Simulink中建立電驅(qū)系統(tǒng)的模型,同時(shí)在AMEsim中建立液壓驅(qū)動(dòng)系統(tǒng)的模型;最后,完成銑槽裝置電驅(qū)動(dòng)和液壓驅(qū)動(dòng)比較研究,主要比較兩者調(diào)速特性、穩(wěn)定性、抗載能力、效率、極限負(fù)載下系統(tǒng)響應(yīng)。依據(jù)理論和仿真的結(jié)果得到:為保證良好的輸出力矩確定雙電機(jī)并聯(lián)的驅(qū)動(dòng)方案;根據(jù)各頻率下電機(jī)機(jī)械特性確定變速范圍;根據(jù)驅(qū)動(dòng)負(fù)載的特性確定轉(zhuǎn)差頻率矢量控制的方法;銑槽裝置電驅(qū)系統(tǒng)的抗載能力和調(diào)速范圍都小于液壓驅(qū)動(dòng)系統(tǒng);恒負(fù)載工況下,銑槽裝置電驅(qū)系統(tǒng)和液壓驅(qū)動(dòng)系統(tǒng)都可以實(shí)現(xiàn)平滑調(diào)速;變負(fù)載工況下,這兩種驅(qū)動(dòng)系統(tǒng)都具有很好的穩(wěn)定性,可以保持恒速工作;極限負(fù)載工況下,電驅(qū)系統(tǒng)的速度波動(dòng)小于液壓驅(qū)動(dòng)系統(tǒng),并且很快的恢復(fù)穩(wěn)定;電驅(qū)系統(tǒng)在經(jīng)濟(jì)區(qū)工作時(shí)效率大于液壓驅(qū)動(dòng)系統(tǒng)效率。
[Abstract]:Hydraulic double-wheel milling machine is gradually replacing the hydraulic grab and rotary drilling machine to construct underground continuous wall to meet the strict requirements of impermeability and construction technology and become the main equipment of quality continuous wall construction.However, when the construction depth is more than 40 m, the winding of a very long hydraulic hose on the winch causes a great loss of power and a large amount of heat, which makes the machine in a state of high consumption and low efficiency.In addition, the thermal performance of the hose poor, heat balance temperature will rise, will bring a series of hazards.Based on this, we study the electric drive double-wheel slot milling machine through winch cable.In this paper, the comparative study of electric drive and hydraulic drive of double wheel slot milling machine is completed.First of all, referring to the parameters of the medium hydraulic double wheel milling machine, the selection calculation of the drive motor is completed. Because of the soft mechanical characteristics of the motor, the parallel drive scheme of the double motor is determined. At the same time, according to the mechanical characteristics of the motor under each frequency, the range of speed change is determined.Then the transmission ratio is calculated by the ratio of output to input torque and speed. Secondly, the method of frequency vector control of slip frequency is determined by comparison, and the model of electric drive system is established in MATLAB/Simulink, and the model of hydraulic drive system is established in AMEsim.Finally, the comparative study of electric drive and hydraulic drive of milling slot device is completed. The characteristics of speed regulation, stability, load resistance, efficiency and system response under limited load are compared.According to the theoretical and simulation results, the following conclusions are obtained: to ensure good output torque, to determine the parallel drive scheme of the two motors, to determine the range of speed change according to the mechanical characteristics of the motor at various frequencies;According to the characteristics of driving load, the method of frequency vector control of slip frequency is determined; the anti-load ability and speed range of electric drive system of milling slot device are smaller than that of hydraulic drive system; under constant load condition, the load resistance of electric drive system is lower than that of hydraulic drive system.Both electric drive system and hydraulic drive system of milling slot device can achieve smooth speed regulation; under variable load condition, both of these two drive systems have good stability and can keep constant speed operation; under the limit load condition,The speed fluctuation of the electric drive system is smaller than that of the hydraulic drive system, and the stability of the electric drive system is quickly restored, and the efficiency of the electric drive system is greater than that of the hydraulic drive system when it works in the economic zone.
【學(xué)位授予單位】：長(zhǎng)安大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TG54

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