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拖拉機液壓機械無級變速器速比匹配設(shè)計與實驗
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“十一五”農(nóng)業(yè)部引進(jìn)國際先進(jìn)農(nóng)業(yè)技術(shù)計劃（948計劃）資助項目（2010-Z18）


Design and Experiment of Hydro-mechanical CVT Speed Ratio for Tractor
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    摘要:

    液壓機械無級自動變速器能夠根據(jù)拖拉機作業(yè)模式的差異，實現(xiàn)不同作業(yè)模式下發(fā)動機轉(zhuǎn)速,、轉(zhuǎn)矩的匹配,。將液壓機械前進(jìn)區(qū)段設(shè)計為等比四區(qū)段,，各區(qū)段傳動公比φ為1.88,，純液壓區(qū)段用于拖拉機低速爬行作業(yè)以及起步,?；谝簤簷C械換段等比傳動的連續(xù)性,，對各區(qū)段齒輪的參數(shù)以及傳動比進(jìn)行設(shè)計，并對變量泵和定量馬達(dá)的匹配進(jìn)行選型,。加載實驗中模擬拖拉機不同作業(yè)模式的負(fù)荷,，進(jìn)行了液壓機械各區(qū)段下的發(fā)動機最佳經(jīng)濟點的速比匹配。驗證了變速箱在各區(qū)段之間的平穩(wěn)換段以及拖拉機平穩(wěn)加速的連續(xù)性響應(yīng),。

    Abstract:

    According to the difference of the tractor operating mode,，the hydro-mechanical automatic transmission can automatically complete the change of transmission ratio and achieve the match of the speed and torque of the engine under different operating modes. The forward section of the designed hydraulic machinery adopted four sections of geometric proportion. Each section transmission common ratio was 1.88. Pure hydraulic section of the designed hydraulic machinery was used for the start of the tractor. Based on the continuity of the transformation of different segments of speed ratio, the gear ratio and power match of variable displacement pump and quantitative motor of each drive pair was determined. Also, the load characteristics of the tractor under various operation modes were combined. The speed ratio match of the optimal economic point of the engine of four sections of the hydraulic machinery was determined. Then， the continuity of the segments of transmission between different sections of hydraulic machinery and continuity output response of smooth acceleration of the tractor were verified. 

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倪向東,朱思洪,歐陽大業(yè),常亞磊,王光明,阮文盛.拖拉機液壓機械無級變速器速比匹配設(shè)計與實驗[J].農(nóng)業(yè)機械學(xué)報,2013,44(4):15-20. Ni Xiangdong, Zhu Sihong, Ouyang Daye, Chang Yalei, Wang Guangming, Nguyen Van Thinh. Design and Experiment of Hydro-mechanical CVT Speed Ratio for Tractor[J]. Transactions of the Chinese Society for Agricultural Machinery,2013,44(4):15-20.

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  • 在線發(fā)布日期: 2013-03-28
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