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专利名称：Shear bar adjustment apparatus including
vibration sensor means with adjustablethreshold
发明人：McClure, John R.,Strosser, Richard P.,Chow,
Marc K.,Weaver, Marvin G., Jr.,Bohman, Carl E.
申请号：EP95202886.8申请日：19880503公开号：EP0706752B1公开日：20020320
摘要：Cutting apparatus having an adjustable shear bar (102) cooperable with arotatable cutter head (100) to cut material passing between the shear bar and cutterhead; said apparatus comprising an adjustment mechanism (110, 112, 116, 118, 122) foradjusting the clearance between the shear bar (102) and the cutter head (100) andincluding motor means (110, 112) operatively coupled to the shear bar (102), vibrationsensor 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 shearbar (102) relative to the cutter head (100); said cutting apparatus beingcharacterised in that the control means (116) comprises means for adapting the
threshold of the vibration sensor means (118) in accordance with the level of backgroundnoise resulting from normal operation of the apparatus so that vibrations in the shearbar (102) resulting from contact between the shear bar (102) and the rotating cutterhead (100) are distinguished from vibrations resulting from said background noise.
申请人：FORD NEW HOLLAND NV
地址：BE
国籍：BE
代理机构：Vandenbroucke, Alberic
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