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    • 10. 发明授权
    • Gear pump
    • 齿轮泵
    • US07717690B2
    • 2010-05-18
    • US11612044
    • 2006-12-18
    • Takeshi HojiSatoshi NagaoKeisuke Shinozaki
    • Takeshi HojiSatoshi NagaoKeisuke Shinozaki
    • F01C20/18
    • H02K7/116F04C2/086F04C2/18F04C14/185
    • A casing with housing space for retaining a first gear and a second gear in a condition where the tooth tips and both side surfaces slide, comprises a main casing which retains the first gear in a manner which allows rotation but restricts movement in the axial direction, and a gear holder which can move in the rotating shaft direction in the main casing and which rotatably retains the second gear. The main casing contains a biasing member which applies a biasing force to bias the gear holder to one side in the rotating shaft direction, and a piston which is acted on by hydraulic pressure and presses the gear holder on the other end side in the rotating shaft direction to counteract the biasing force. The gear holder is acted on by the hydraulic force from the piston to counteract the bias from the biasing member and moves in the rotating shaft direction according to the hydraulic force so that the engagement width between the first gear and the second gear which is retained by the gear holder is changed.
    • 具有用于在齿顶和两侧表面滑动的状态下保持第一齿轮和第二齿轮的壳体的壳体包括:主壳体,其以允许旋转但限制轴向移动的方式保持第一齿轮; 以及能够在主壳体中沿着旋转轴方向移动并且可旋转地保持第二齿轮的齿轮保持器。 主壳体包括施加偏置力以将齿轮架偏置在旋转轴方向上的一侧的偏置构件,以及通过液压作用的活塞,并且将旋转轴中的另一端侧的齿轮保持器 方向来抵消偏置力。 齿轮保持器通过来自活塞的液压力作用,以抵消来自偏置构件的偏压,并且根据液压力在旋转轴方向上移动,使得第一齿轮和第二齿轮之间的接合宽度由 齿轮架更换。