精梳机分离罗拉齿轮传动机构优化  

Optimization of gear transmission mechanism of detaching roller for comber

作　　者：刘金儒 李新荣[1,2] 王建坤 王浩[3] 师帅星[1,2] 王彪 LIU Jinru;LI Xinrong;WANG Jiankun;WANG Hao;SHI Shuaixing;WANG Biao(School of Mechanical Engineering,Tiangong University,Tianjin 300387,China;Tianjin Key Laboratory of Advanced Mechatronics Equipment Technology,Tianjin 300387,China;School of Textile Science and Engineering,Tiangong University,Tianjin 300387,China)

机构地区：[1]天津工业大学机械工程学院,天津300387 [2]天津市现代机电装备技术重点实验室,天津300387 [3]天津工业大学纺织科学与工程学院,天津300387

出　　处：《纺织学报》2024年第3期177-184,共8页Journal of Textile Research

基　　金：天津市131创新型人才团队项目(201916)。

摘　　要：混合驱动的精梳机分离罗拉齿轮传动机构的动力学性能直接影响车速的提高,为改善传动机构的动力学性能,首先,分析现有混合驱动的精梳机分离罗拉齿轮传动机构,采用集中质量法建立传动机构的固有频率模型,并计算传动机构在不同精梳机车速下的激励频率,发现当车速为600钳次/min时机构会出现共振;然后,采用导数法建立传动机构固有频率对机构中各个构件转动惯量的灵敏度模型,发现行星轮p的转动惯量对一阶固有频率的影响较大;最后,通过优化传动机构中WW型差动轮系的各个齿轮齿数以改变其转动惯量,使传动机构的一阶固有频率比原先提高了43.44%,避免了机构在600钳次/min时出现共振。Objective With the increase of combing speed,the internal excitation frequencies of the hybrid-driven gear transmission mechanism of the comber detaching roller will increase.When it approaches the natural frequencies of the transmission mechanism,the mechanism will have resonance,causing damage to some components.Therefore,in order to master the dynamic performance of the transmission mechanism and avoid resonance,it is necessary to study the influence of the change of mechanism parameters on the inherent characteristics and then optimize the design of the transmission mechanism.Method A hybrid-driven gear transmission mechanism of the comber detaching roller was designed.The lumped-mass method was adopted to establish the natural frequency model of the transmission mechanism,and the excitation frequencies of the transmission mechanism at different comber speeds were calculated.Then,the sensitivity model of the natural frequency of the transmission mechanism to moment of inertias was obtained by derivative method.Finally,by optimizing the number of teeth of each gear in WW differential gear train of the transmission mechanism to change the moment of inertia,the first order natural frequency was increased.Results The natural frequencies of the transmission mechanism were divided into two types according to the number of multiple roots:single root frequency and N-1 multiple root frequency.With the increase of the number of double planetary gears,the single root frequencies changed,while the N-1 multiple root frequencies were independent of the number of double planetary gears.When the speed of the combing locomotive was 300,400 and 500 nips/min,the internal excitation frequency of the transmission mechanism did not intersect with the natural frequency,and the mechanism operated normally without resonance.However,when the speed of the combing machine was increased to 600 nips/min,the meshing frequency of the gear pair c-d intersected the first order natural frequency(points A and B),and the mechanism may resonate a

关 键 词：精梳机 分离罗拉 混合驱动 齿轮传动机构 

分 类 号：TS112.2[轻工技术与工程—纺织材料与纺织品设计]