公开(公告)号：USRE37215E1

公开(公告)日：2001-06-12

申请号：US09360184

申请日：1999-07-23

申请人： Ned E. Dammeyer ,  Todd M. Fullenkamp ,  Harold A. Stammen

发明人： Ned E. Dammeyer ,  Todd M. Fullenkamp ,  Harold A. Stammen

IPC分类号： B66F916

CPC分类号： B66F9/0755 ,  B66F9/122 ,  B66F9/16

摘要： A fork lift truck includes a fork level sensor located in the forks, away from the vertical mast of a lift truck for detecting the true level of the forks, and a vision system including a camera which may take several forms. In one form, a single camera is mounted in a housing which may be moved to a protected location vertically either by sliding in the carriage assembly, or by use of a parallelogram device. In another form, multiple cameras are employed where a second camera may be either mounted above the first camera in the same housing or mounted between the forks. Alternatively, the first camera may perform multiple roles by being moved vertically from a first predetermined location below the bottom of the forks to a higher elevation a second predetermined location relative to the forks. A video display terminal, which shows the view observed by the camera, may also include a fork level indicator, a reticle for assisting in adjusting the vertical position of the forks, and an indicator showing the specific truck function selected by the operator.

摘要翻译： 叉车包括位于叉中的叉级传感器，远离叉车的垂直桅杆以检测叉的真实水平，以及包括可能采取多种形式的相机的视觉系统。 在一种形式中，单个照相机安装在壳体中，其可以通过在托架组件中滑动或通过使用平行四边形装置而垂直地移动到受保护的位置。 在另一种形式中，采用多个相机，其中第二相机可以被安装在同一外壳中的第一相机上方或者安装在叉之间。 或者，第一相机可以通过从叉的底部下方的第一预定位置垂直移动到相对于叉的第二预定位置的较高高度来执行多个角色。 示出由相机观察到的视图的视频显示终端还可以包括叉级指示器，用于辅助调整叉的垂直位置的掩模版和示出操作者选择的特定卡车功能的指示器。