Tree harvester boom elevation control
    1.
    发明授权
    Tree harvester boom elevation control 失效
    树收割机高度控制

    公开(公告)号:US3587682A

    公开(公告)日:1971-06-28

    申请号:US3587682D

    申请日:1969-01-27

    IPC分类号: A01G23/083 A01G23/02

    CPC分类号: A01G23/083

    摘要: A TREE HARVESTING APPARATUS ADAPTED TO SEVER A STANDING TREE INTO A PLURALITY OF SECTIONS, THE APPARATUS INCLUDING A TREE SEVERING MEANS SUPPORTED ON A TELESCOPIC BOOM VERTICALLY PIVOTABLE CONNECTED TO A VEHICLE. TO AUTOMATICALLY POSITION SEVERING MEANS AT A PROPER ELEVATION FOR TOPPING THE TREE, A CONTROL MEANS IS PROVIDED FOR CONTROLLING THE NUMBER OF SECTIONS TO BE SEVERED FROM THE TREE AND FOR CONTROLLING ELEVATION OF THE SEVERING MEANS ABOVE GROUND LEVEL ACCORDING TO A PREDETERMINED ELEVATION INDEPENDENT OF ORIENTATION OF THE VEHICLE RELATIVE TO THE TREE.