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    • 8. 发明授权
    • Excavator
    • 挖掘机
    • US07048072B2
    • 2006-05-23
    • US11103548
    • 2005-04-12
    • Takayuki OkunishiShintaro Sakitani
    • Takayuki OkunishiShintaro Sakitani
    • E02F3/76E02F3/80E01H5/06
    • E02F3/7609
    • In an excavator, a blade surface for performing an earth removal operation while a blade is set in contact with the ground satisfies the following conditions: A) upward pushing force components Fu that push dirt upward along the blade surface are generated; B) an upper part of the blade surface has a release surface portion in which a forward-upward release force that rolls the dirt pushed upward by Fu forward is generated; C) when downward pressing force components Fd are generated in response to the generated release force, a total downward pressing force ΣFd> a total upward pushing force ΣFu; and D) if each Fu is given a positive value and if each Fd and a reduced amount of each Fu caused when the dirt hits the release surface portion are given negative values, a value of force at an endmost section of the release surface portion is positive.
    • 在挖掘机中,用于在叶片与地面接触的同时执行排土操作的叶片表面满足以下条件:A)产生沿着叶片表面向上推动污物的向上推力分量Fu; B)叶片表面的上部具有释放面部分,在该释放表面部分中产生向上推动释放力,该向前释放力滚动由Fu向前推动的污物; C)当响应于所产生的释放力而产生向下按压力分量Fd时,总向下推压力ΣFd>总向上推力SigmaFu; 和D)如果每个Fu被赋予正值,并且如果在污物撞击释放表面部分时引起的每个Fd和减少的量被赋予负值,则释放表面部分的最末端处的力的值为 正。