【摘要】：針對(duì)國(guó)內(nèi)缺乏打結(jié)器連續(xù)打結(jié)的性能測(cè)試與疲勞試驗(yàn)系統(tǒng),模擬方捆機(jī)捆草作業(yè)過(guò)程,提出了一種打結(jié)器連續(xù)打結(jié)試驗(yàn)方法與疲勞試驗(yàn)臺(tái)設(shè)計(jì)方案。通過(guò)設(shè)計(jì)可模擬草捆回彈特性的拉繩裝置使其在水平面按矩形軌跡拉繩,在繩針?biāo)屠K動(dòng)作配合下在垂直面形成矩形繩環(huán),使受測(cè)試的打結(jié)器完成打結(jié)。試驗(yàn)臺(tái)循環(huán)實(shí)現(xiàn)拉繩-送繩-打結(jié)動(dòng)作,同時(shí)測(cè)試打結(jié)過(guò)程中的捆繩張力、主軸轉(zhuǎn)矩和主軸轉(zhuǎn)角。按此方案在Solidworks下建立了試驗(yàn)臺(tái)機(jī)械系統(tǒng)三維模型,并對(duì)關(guān)鍵部件進(jìn)行選型。構(gòu)建了試驗(yàn)臺(tái)參數(shù)測(cè)量與運(yùn)動(dòng)控制系統(tǒng),基于拉繩-送繩-打結(jié)動(dòng)作邏輯設(shè)計(jì)了試驗(yàn)臺(tái)控制流程,采用Lab VIEW圖形化編程語(yǔ)言編寫了測(cè)試與控制程序。打結(jié)器疲勞試驗(yàn)臺(tái)的運(yùn)行試驗(yàn)結(jié)果表明,該試驗(yàn)臺(tái)機(jī)械系統(tǒng)與測(cè)控系統(tǒng)運(yùn)行可靠,連續(xù)打結(jié)效率為3個(gè)/min,可為打結(jié)器研發(fā)及短時(shí)疲勞壽命考核提供試驗(yàn)平臺(tái)。
[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.
【作者單位】： 江蘇大學(xué)現(xiàn)代農(nóng)業(yè)裝備與技術(shù)教育部重點(diǎn)實(shí)驗(yàn)室;
【基金】：國(guó)家自然科學(xué)基金項(xiàng)目(51375215) 國(guó)家重點(diǎn)研發(fā)計(jì)劃項(xiàng)目(2016YFD0701700) 江蘇高校優(yōu)勢(shì)學(xué)科建設(shè)工程項(xiàng)目(蘇政辦發(fā)[2014]37號(hào))
【分類號(hào)】：S817.115

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