可変容量形斜板ピストンポンプの操作モーメントに関する研究　Ｉ　　操作モーメントに対する斜板傾角保持系の影響

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タイトル別名
  • A study on operating moment of a swash-plate type axial piston pump. First report. Effects of dynamic characteristics of a tilt angle supporting element on the operating moment.
  • Effects of Dynamic Characteristics of a Tilt Angle Supporting Element on the Operating Moment
  • (第1報操作モーメントに対する斜板傾角保持系の影響)

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説明

Swath-plate type variable delivery axial piston pump is commonly applied to in small-size agricultural and construction machines as the power source for hydrostatic transmission. The use of hydrostatic transmission is increasing for the above types of machines due to its ease in control. In most of applications, however, the pump is operated manually. <br>It becomes very important to study not only static but also dynamic characteristics of the operating moment. The latter delicately affects feeling in manual operation and noise level. The authors found, however, that there are few studies on the dynamic operating moment of the variable delivery axial piston pump for manual operation. <br>In this paper, static and dynamic characteristics of the operating moment of a swath-plate type variable delivery axial piston pump, in which roller bearings are used to support the swath-plate, have been studied experimentally as well as theoretically. The effect of the tilt angle supporting system was considered. <br>The following results were obtained in this study. <br>(1) Average values of experimental operating moment were in good agreement with those of theoretical exciting moment which is derived from pressure measured in the cylinder block (measured cylinder pressure) without considering the dynamic characteristics of the tilt angle supporting element. Concerning the waveforms, however, experimental and theoretical values do n ot always coincide. (2) By taking the dynamics of the tilt angle supporting element into consideration, waveforms of the operating moment based on measured cylinder pressure are calculated. They were found to be in good agreement with those of experimental values. (3) Finally, combining the conventional calculation method of cylinder pressure and the calculation method of the dynamic behavior of the tilt angle supporting element, the operatin g moment was able to be derived. The calculated value by this method showed good agreement w i th that of experimental value of the pump in which the valve plate with wide, short and deep knotc h es were used.

収録刊行物

  • 油圧と空気圧

    油圧と空気圧 18 (4), 313-320, 1987

    社団法人 日本フルードパワーシステム学会

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