打结器连续打结试验方法与疲劳试验台设计
发布时间：2018-07-26 09:32
【摘要】：针对国内缺乏打结器连续打结的性能测试与疲劳试验系统,模拟方捆机捆草作业过程,提出了一种打结器连续打结试验方法与疲劳试验台设计方案。通过设计可模拟草捆回弹特性的拉绳装置使其在水平面按矩形轨迹拉绳,在绳针送绳动作配合下在垂直面形成矩形绳环,使受测试的打结器完成打结。试验台循环实现拉绳-送绳-打结动作,同时测试打结过程中的捆绳张力、主轴转矩和主轴转角。按此方案在Solidworks下建立了试验台机械系统三维模型,并对关键部件进行选型。构建了试验台参数测量与运动控制系统,基于拉绳-送绳-打结动作逻辑设计了试验台控制流程,采用Lab VIEW图形化编程语言编写了测试与控制程序。打结器疲劳试验台的运行试验结果表明,该试验台机械系统与测控系统运行可靠,连续打结效率为3个/min,可为打结器研发及短时疲劳寿命考核提供试验平台。
[Abstract]:In view of the lack of performance test and fatigue test system for continuous knotting of knots in China, a method of continuous knotting test and a design scheme of fatigue test bench are proposed to simulate the operation process of square baler. By designing a rope pulling device which can simulate the springback characteristics of the bales, it can pull the rope in the horizontal plane according to the rectangular track, and form a rectangular rope ring in the vertical plane with the action of the rope needle feeding rope, so that the knotting device under test can complete the knot. At the same time, the tension of tie rope, the torque of spindle and the rotation angle of spindle are tested. According to this scheme, the three-dimensional model of the mechanical system of the test-bed is established under Solidworks, and the key components are selected. The parameter measurement and motion control system of the test bed is constructed. The control flow of the test bed is designed based on the pulling rope, feeding rope and knotting logic, and the test and control program is compiled by using Lab VIEW graphical programming language. The test results show that the mechanical system and the measurement and control system are reliable, and the continuous knot efficiency is 3 / min, which can provide a test platform for the research and development of knotter and the examination of short-time fatigue life.
【作者单位】： 江苏大学现代农业装备与技术教育部重点实验室;
【基金】：国家自然科学基金项目(51375215) 国家重点研发计划项目(2016YFD0701700) 江苏高校优势学科建设工程项目(苏政办发[2014]37号)
【分类号】：S817.115
本文编号：2145575
[Abstract]:In view of the lack of performance test and fatigue test system for continuous knotting of knots in China, a method of continuous knotting test and a design scheme of fatigue test bench are proposed to simulate the operation process of square baler. By designing a rope pulling device which can simulate the springback characteristics of the bales, it can pull the rope in the horizontal plane according to the rectangular track, and form a rectangular rope ring in the vertical plane with the action of the rope needle feeding rope, so that the knotting device under test can complete the knot. At the same time, the tension of tie rope, the torque of spindle and the rotation angle of spindle are tested. According to this scheme, the three-dimensional model of the mechanical system of the test-bed is established under Solidworks, and the key components are selected. The parameter measurement and motion control system of the test bed is constructed. The control flow of the test bed is designed based on the pulling rope, feeding rope and knotting logic, and the test and control program is compiled by using Lab VIEW graphical programming language. The test results show that the mechanical system and the measurement and control system are reliable, and the continuous knot efficiency is 3 / min, which can provide a test platform for the research and development of knotter and the examination of short-time fatigue life.
【作者单位】： 江苏大学现代农业装备与技术教育部重点实验室;
【基金】：国家自然科学基金项目(51375215) 国家重点研发计划项目(2016YFD0701700) 江苏高校优势学科建设工程项目(苏政办发[2014]37号)
【分类号】：S817.115
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