本文關(guān)鍵詞：基礎(chǔ)俯仰運(yùn)動(dòng)對(duì)風(fēng)力機(jī)行星齒輪動(dòng)力學(xué)特性的影響分析　出處：《振動(dòng)工程學(xué)報(bào)》2016年06期 　論文類型：期刊論文

  更多相關(guān)文章： 行星齒輪 基礎(chǔ)俯仰運(yùn)動(dòng) 能量法 均載特性 支承剛度

【摘要】：由于塔架在風(fēng)力作用下的彎曲振動(dòng),機(jī)艙會(huì)產(chǎn)生俯仰運(yùn)動(dòng),進(jìn)而對(duì)行星齒輪產(chǎn)生基礎(chǔ)激勵(lì)。從能量角度出發(fā),考慮基礎(chǔ)俯仰運(yùn)動(dòng)、輪齒脫嚙和齒背嚙合,通過(guò)第二類拉格朗日方程建立了基礎(chǔ)俯仰運(yùn)動(dòng)下行星齒輪傳動(dòng)非線性彎-扭-軸耦合模型。與現(xiàn)有基礎(chǔ)固定情況下的耦合模型相比,基礎(chǔ)俯仰運(yùn)動(dòng)將引起附加阻尼、附加剛度和附加外激勵(lì),同時(shí)引起直齒輪平面運(yùn)動(dòng)與軸向運(yùn)動(dòng)的耦合。采用數(shù)值積分獲得系統(tǒng)動(dòng)態(tài)響應(yīng),評(píng)估軸向運(yùn)動(dòng)對(duì)系統(tǒng)動(dòng)力學(xué)特性影響的大小,分析基礎(chǔ)俯仰運(yùn)動(dòng)和齒圈支承剛度對(duì)行星齒輪動(dòng)力學(xué)響應(yīng)和均載特性的影響。結(jié)果表明,基礎(chǔ)俯仰運(yùn)動(dòng)顯著增大中心輪(行星架、齒圈和太陽(yáng)輪)的橫向振動(dòng);行星輪所受附加作用力不相同,運(yùn)動(dòng)對(duì)稱性被破壞,系統(tǒng)出現(xiàn)不均載現(xiàn)象。當(dāng)系統(tǒng)存在輪齒脫嚙和齒背嚙合時(shí),增大齒圈支承剛度能顯著改善均載特性,沒(méi)有輪齒脫嚙和齒背嚙合時(shí),均載系數(shù)隨著齒圈支承剛度的增大而小幅增大。
[Abstract]:Due to the bending vibration of the tower under the action of the wind, the engine room will produce pitching movement, which will stimulate the planetary gear. From the energy point of view, considering the pitch motion, tooth engagement and tooth backing engagement, a nonlinear torsional axial coupling model of planetary gear transmission based on second kinds of Lagrange equations is established. Compared with the existing coupling model, the basic pitch motion will cause additional damping, additional stiffness and additional external excitation, and at the same time, the coupling between the plane motion and the axial movement of the spur gear. The dynamic response of the system is obtained by numerical integration. The magnitude of the influence of axial motion on the dynamic characteristics of the system is evaluated. The influence of the pitch motion and the supporting stiffness of the gear ring on the dynamic response and load sharing characteristics of the planetary gear is analyzed. The results show that the basic pitch motion significantly increases the lateral vibration of the central wheel (planet gear, gear ring and sun wheel), the additional force acting on the planetary wheel is different, the symmetry of motion is destroyed, and the uneven load phenomenon occurs. When the system has teeth engagement and tooth backing engagement, increasing the supporting stiffness of the gear ring can significantly improve the load sharing characteristics. When the gear teeth are not engaged and the gear backs engage, the load factor increases slightly with the increase of the supporting stiffness of the gear ring.
【作者單位】： 清華大學(xué)機(jī)械工程系;北京航天發(fā)射技術(shù)研究所;
【基金】：國(guó)家自然科學(xué)基金資助項(xiàng)目(51335006) 北京市自然科學(xué)基金資助項(xiàng)目(3131002)
【分類號(hào)】：TK83;TH132.41
【正文快照】： 引言行星齒輪傳動(dòng)在結(jié)構(gòu)上采用多個(gè)行星輪來(lái)分擔(dān)載荷,形成功率分流,具有結(jié)構(gòu)緊湊、體積小、傳動(dòng)比大和傳動(dòng)效率高等特點(diǎn),在工程中得到廣泛應(yīng)用。關(guān)于行星齒輪的動(dòng)力學(xué)建模和分析的研究較為廣泛和深入[1],模型類型不斷發(fā)展,系統(tǒng)自由度和考慮因素不斷增多,期望通過(guò)動(dòng)力學(xué)分析為

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