本文選題：D閥 + 壓扭聯(lián)軸器��； 參考：《中國機(jī)械工程》2017年17期

【摘要】：提出了一種滾珠絲杠型壓扭聯(lián)軸器,該聯(lián)軸器能將輸出力放大約20倍,有效地解決了因比例電磁鐵磁飽和造成直動比例方向閥無法實(shí)現(xiàn)大流量的問題。該聯(lián)軸器將2D方向閥和比例電磁鐵相連接,利用壓扭放大驅(qū)動技術(shù),將電磁力轉(zhuǎn)化為閥芯左右兩端不平衡的液壓力,以克服摩擦力、卡緊力和液動力等非線性因素的影響。對主閥P-A處與導(dǎo)控級的壓力分布和流場分布進(jìn)行了仿真分析,理論與實(shí)驗研究表明:壓扭聯(lián)軸器有效地放大了電磁力,在流量約為210L/min的情況下,閥的階躍響應(yīng)約為0.35s,該閥-90°頻率為4Hz左右。疊加一定顫振對改善閥的階躍響應(yīng)不明顯,但能較好保證閥芯位移與電磁鐵位移之間的跟隨性。
[Abstract]:A ball screw type pressure-torsion coupling is proposed. The coupling can amplify the output force by about 20 times, effectively solving the problem that the direct proportional directional valve can not realize the large flow rate due to the proportional magnet saturation. The coupling connects 2D directional valve and proportional electromagnet and converts electromagnetic force into unbalanced liquid pressure at the left and right ends of the valve core by using pressure-torsional amplification drive technology to overcome the influence of nonlinear factors such as friction force, clamping force and hydraulic force. The pressure distribution and flow field distribution at P-A and guide stage of the main valve are simulated and analyzed. The theoretical and experimental results show that the pressure and torsional coupling amplifies the electromagnetic force effectively, and the flow rate is about 210L/min. The step response of the valve is about 0.35s, and the frequency of the valve is about 4Hz. The superposition of certain flutter is not obvious to improve the step response of valve, but it can ensure the followability between the displacement of valve core and the displacement of electromagnet.
【作者單位】： 浙江大學(xué)城市學(xué)院工程學(xué)院;浙江工業(yè)大學(xué)特種裝備制造與先進(jìn)加工技術(shù)教育部重點(diǎn)實(shí)驗室;
【基金】：國家自然科學(xué)基金資助項目(51605430)
【分類號】：TH137.52

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