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    Shear bar adjustment apparatus including vibration sensor means with adjustable threshold
    1.
    发明公开
    Shear bar adjustment apparatus including vibration sensor means with adjustable threshold 失效
    Justierungsapparat eines Scherbalkens einschliesslich Vibration-Sensormittel mit regulierbarem Drempel

    公开(公告)号：EP0706752A1

    公开(公告)日：1996-04-17

    申请号：EP95202886.8

    申请日：1988-05-03

    申请人： NEW HOLLAND BELGIUM N.V.

    发明人： McClure, John R. ,  Strosser, Richard P. ,  Chow, Marc K. ,  Weaver, Marvin G., Jr. ,  Bohman, Carl E.

    IPC分类号： A01F29/20

    CPC分类号： A01F29/09 ,  A01D34/62 ,  A01D2101/00 ,  A01F29/095

    摘要： Cutting apparatus having an adjustable shear bar (102) cooperable with a rotatable cutter head (100) to cut material passing between the shear bar and cutter head; said apparatus comprising an adjustment mechanism (110, 112, 116, 118, 122) for adjusting the clearance between the shear bar (102) and the cutter head (100) and including motor means (110, 112) operatively coupled to the shear bar (102), vibration sensor means (118) for sensing contact between the shear bar (102) and the cutter head (100) and electrical control means (116) operable to energise the motor means (110, 112) and responsive to the vibration sensor means (118) for automatically adjusting the shear bar (102) relative to the cutter head (100); said cutting apparatus
       being characterised in that
    the control means (116) comprises means for adapting the threshold of the vibration sensor means (118) in accordance with the level of background noise resulting from normal operation of the apparatus so that vibrations in the shear bar (102) resulting from contact between the shear bar (102) and the rotating cutter head (100) are distinguished from vibrations resulting from said background noise.

    摘要翻译： 切割装置具有与可旋转切割头（100）配合的可调节剪切杆（102），以切割通过剪切杆和切割头之间的材料; 所述装置包括用于调节剪切杆（102）和切割头（100）之间的间隙的调节机构（110,112,116,118,122），并且包括可操作地联接到剪切杆（102）的马达装置（110,112） （102），用于感测所述剪切杆（102）和所述切割头（100）之间的接触的振动传感器装置（118）和可操作以对所述马达装置（110,112）通电并响应于所述振动 用于相对于切割头（100）自动调整剪切杆（102）的传感器装置（118）; 所述切割装置的特征在于，所述控制装置（116）包括用于根据由所述装置的正常操作产生的背景噪声的水平来适应所述振动传感器装置（118）的阈值的装置，使得所述剪切杆 剪切杆（102）和旋转刀头（100）之间的接触所产生的振动（102）与由所述背景噪声产生的振动区分开。