Investigation For Output Torque Of A Low Pressure Water Hydraulic Planetary Gear Motor
Investigation For Output Torque Of A Low Pressure Water Hydraulic Planetary Gear Motor
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发表时间：
2012
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通讯作者：
S. Oshima;Takuya Hiranao;Vodna Hidravlika
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作者：
S. Oshima;Takuya Hiranao;Vodna Hidravlika
本研究是关于一种可在与民用自来水相同的低压下驱动的行星齿轮马达。低压水压系统具有成本低、安全、使用方便、泄漏后不会污染环境等优点。介绍了低压水压行星齿轮马达的结构，阐述了其输出转矩产生的机理和理论输出转矩的计算方法。在很低的恒转速条件下，将理论计算的输出转矩与实测值进行了比较。结果表明，计算结果与实测结果存在一定的差异，主要是由于定子、转子和行星齿轮齿面啮合处的摩擦力引起的。实验结果表明，采用含石墨的固体润滑膜对行星齿轮进行表面处理，可使输出扭矩效率提高15%左右。此外，还对PEEK和黄铜制成的行星齿轮进行了试验。
This study concerns a Planetary Gear Motor which can be driven by low pressure as same as civil tap water pressure. Low pressure water hydraulic system has advantages such as low cost, safety and easy usage as well as no risk to pollute the environment if leakage happens. The purpose of this paper is to introduce the structure of the Low Pressure Water hydraulic Planetary Gear Motor (LPW-PGM) and to explain the supposed mechanism of output torque generation and the method to calculate the theoretical output torque. The theoretically calculated output torque is compared with the measured under the condition of very low constant rotational speed. As a result, it is found that there is a difference between the calculated and measured results, and the major of difference is caused by the friction at the meshing parts on the teeth of the stator, rotor and planetary gears. The experimental result shows that a surface treatment on the planetary gears with solid lubricant film which contains Graphite makes the output torque efficiency increase about 15%. In addition, the planetary gears made of PEEK and brass are also tested.