纺织学报 ›› 2019, Vol. 40 ›› Issue (04): 122-128.doi: 10.13475/j.fzxb.20180403607

• 机械与器材 • 上一篇    下一篇

采用混合驱动的精梳机分离罗拉传动机构

杨海鹏1,2, 李新荣1,2(), 吕鹏飞1,2, 王振宇1,2   

  1. 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
  • 收稿日期:2018-04-17 修回日期:2018-12-01 出版日期:2019-04-15 发布日期:2019-04-16
  • 通讯作者: 李新荣
  • 作者简介:杨海鹏(1992—),男,硕士生。主要研究方向为纺织机械设计及自动化。

Detaching roller drive mechanism of a comber based on hybrid-driven

YANG Haipeng1,2, LI Xinrong1,2(), LÜ Pengfei1,2, WANG Zhenyu1,2   

  1. 1. School of Mechanical Engineering, Tianjin Polytechnic University, Tianjin 300387, China
    2. Key Laboratory of Modern Mechanical and Electrical Equipment Technology, Tianjin 300387, China
  • Received:2018-04-17 Revised:2018-12-01 Online:2019-04-15 Published:2019-04-16
  • Contact: LI Xinrong

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摘要：

针对精梳机机械式分离罗拉传动机构振动限制车速提高的问题,提出了由双伺服电动机单向驱动分离罗拉的方案。首先,根据精梳工艺要求,对分离罗拉运动状态中的位移关键点进行优化拟合,得到满足分离罗拉运动规律的曲线。其次,基于混合驱动的思想,将运动规律合理地分配到2个动力源。最后,在Adams环境中建立虚拟样机进行仿真分析并进行实验验证。结果表明:该方案能够准确实现分离罗拉的运动规律,并且2个伺服电动机中角加速度最大值相比伺服电动机直接驱动分离罗拉方案减小72.05%,有利于降低能源消耗;该设计不但消除了机械结构振动限制车速提高的问题,还可根据不同棉花种类的工艺对车速进行调节,增加了机构的柔性。

关键词: 精梳机, 混合驱动, 分离罗拉, 传动机构, 差动轮系

Abstract:

Aiming at the problem of the speed limit of the vibration of the mechanical detaching roller drive mechanism of the comber, the scheme of the single-drive detaching roller of the dual servo motor was proposed. First of all, according to the requirement of the combing technology, based on the idea of least square method, a curve was optimized to fit the displacement key points in the moving state of the detaching roller, and it satisfied the rule of the detaching roller motion. Secondly, based on the idea of hybrid-drive, the motion law was reasonably distributed to two power sources. Finally, virtual prototype was established in Adams environment for simulation analysis and was verified by experiment. The research results show that this scheme can accurately realize the motion law of the separation roller. The maximum angular acceleration of the two servo motors decreases by 72.05% compared with that of the single servo motor, which is beneficial to reduce energy consumption. The design eliminates the limitation in speed due to the vibration of mechanical structure. The speed can be adjusted according to different kinds of cotton, which increases the flexibility of the mechanism.

Key words: comber, hybrid-driven, detaching roller, drive mechanism, differential gear train

中图分类号: 

  • TS112.2

图1

分离罗拉运动位移示意图"

图2

分离罗拉位移曲线关键点分布图"

表1

分离罗拉运动曲线关键点"

关键点i 锡林转过角度 分离罗拉转过角度
A 0 0.00
B 18 -123.76
C 54 -293.35
D 72 -233.77
E 144 4.58
F 225 114.59
G 360 119.18

表2

计算得到的各变量的值"

系数变量 优化结果 系数变量 优化结果 系数变量 优化结果
a0 -55.322 a3 31.619 b5 -5.396
a1 -52.230 b3 12.476 a6 2.350
b1 131.660 a4 18.549 b6 -3.153
a2 34.300 b4 -2.723 ω -0.017
b2 51.977 a5 7.846 k 0.323

图3

分离罗拉的运动规律图"

图4

2个伺服电动机对应速度曲线图"

图5

差动轮系结构简图"

图6

混合驱动机构图"

图7

伺服电动机角速度及角加速度实际运动规律"

图8

Adams中输出的分离罗拉角速度及角加速度曲线"

图9

分离罗拉驱动机构实物图"

图10

精梳机分离罗拉角位移曲线图"

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