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| Swash plate moment property modeling and analysis of balanced two-ring axial piston pump |
| DENG Hai-shun1,2, HUANG Kun1,3, HUANG Ran1, WANG Chuan-li1, DENG Yue-fei1 |
1. College of Mechanical Engineering, Auhui University of Science and Technology, Huainan 232001, China;
2. Xuzhou Aobo Mechanical Technology Co., Ltd., Xuzhou 221100, China;
3. Hengli Eletek Co., Ltd., Hefei 230088, China |
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Abstract In order to obtain matching relation between swash plate and piston component in the balanced two-ring axial piston pump, the force condition of swash plate was analyzed theoretically. The simulation model of balanced two-ring axial piston pump and swash plate was established based on its multi inclined slope characteristic. And the influence of the parameters such as the piston distribution circle radius, the piston diameter and the inclined slope inclination angle on the swash plate moment was also established. The results showed that the increase in inner piston distribution circle radius would reduce the swash plate total moment, while the case of outer ring was on the contrary and the influence of outer piston distribution circle radius on the total moment was far greater than that in the inner ring, so the reduction of the distribution circle radius difference between the inner and outer rings was advantageous to the reduction of the moment, at the same time, the increase in the inner piston diameter would also make the total moment reduced and that of the outer ring was also on the contrary, it's better to make the inner and outer piston diameters close to each other. The total force's trace of the swash plate of balanced two-ring axial piston pump changed along the "triangle". The characteristics of this trace were less turning point, low directional mutation and gentle force change, which made the swash plate have better stress situation, more stable operation and less vibration. The research results provide the guidance for the optimal design of the balanced two-ring axial piston pump's swash plate.
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Received: 31 May 2016
Published: 28 December 2016
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平衡式两排轴向柱塞泵斜盘力矩特性建模与分析
为确定平衡式两排轴向柱塞泵斜盘与柱塞组件间的匹配关系，理论分析了其斜盘斜面的受力状况，建立了平衡式两排轴向柱塞泵及其斜盘的仿真模型，得出了柱塞分布圆半径、柱塞直径、斜盘斜面倾角等对斜盘力矩的影响.结果表明：内排柱塞分布圆半径增大，斜盘合力矩减小，外排柱塞分布圆半径增大，斜盘合力矩增大，且外排柱塞分布圆半径对合力矩的影响远大于内排柱塞分布圆半径，减小内、外排柱塞分布圆半径差有利于减小合力矩；内排柱塞直径增大，合力矩减小，外排柱塞直径增大，合力矩增大，应尽量使内、外排柱塞直径尺寸接近.平衡式两排轴向柱塞泵斜盘合力轨迹呈类“三角形”，转折点少，方向突变性低，合力变化平缓，使得斜盘受力良好，运行更平稳，振动更小.研究结果可为平衡式双排柱塞泵斜盘的优化设计提供理论指导.
关键词：
平衡式两排轴向柱塞泵,
斜盘,
力矩,
建模
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