| Research and Design of Hydro-mechanical Continuously Variable Transmission for Tractors |
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| 作者姓名： | XU Liyou ZHOU Zhili ZHANG Mingzhu LI Yan |
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| 作者单位： | 1. College of Vehicle and Power Engineering，Henan University of Science and Technology，Luoyang Henan 471003，PRC; 2. College of Mechanics and Apparatus Engineering，Xi'an University of Technology，Xi'an Shanxi 710048，PRC |
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| 基金项目： | 河南省高等学校杰出科研人才创新工程，河南科技大学青年科学基金 |
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| 摘 要： | The working condition of tractors is bad, and the outside load fluctuation is frequent. All that require engine or transmission to change revolution speed and torque timely to accommodate the variation of load and motion resistance, and ensure the dynamic…
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| 关 键 词： | 拖拉机 液压机械无级变速器 传动方案 调速性能 传动效率 |
| 文章编号： | 1006-8104（2006）-02-0182-05 |
| 收稿时间： | 2005-09-20 |
Research and Design of Hydro-mechanical Continuously Variable Transmission for Tractors |
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| XU Liyou ZHOU Zhili ZHANG Mingzhu LI Yan.Research and Design of Hydro-mechanical Continuously Variable Transmission for Tractors[J].Journal of Northeast Agricultural University,2006,13(2):182-186. |
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| Authors: | XU Liyou ZHOU Zhili ZHANG Mingzhu LI Yan |
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| Abstract: | A new type continuous variable transmission device, a hydro-mechanical continuously variable transmission (HMCVT) for agricultural tractors is developed, which is composed of a single planetary gear differential train, a hydraulic transmission system consisted of variable displacement pump and fixed displacement motor and a multi-gear fixed step radio transmission. Based on the analysis of types of hydrostatic mechanical transmission(HMT) and styles of hydraulic transmission, the general drive scheme for HMCVT is obtained. The method of selecting mechanical parameters and hydraulic units is explained, and the stepless speed regulation characteristic of HMCVT is analyzed. This paper also specializes the calculating method of transmission efficiency. It shows that tractors assembled with HMCVT can obtain a continuously variable speed and achieve high drive efficiency. |
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| Keywords: | tractors hydro-mechanical continuously variable transmission transmission scheme regulating characteristics transmission efficiency |
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