| 摘要 |
A rectangular bin for storing and transporting books at a sorting stati on in a library has a base on wheels with four side walls and a horizontal floo r panel movable vertically within the bin. An optical sensor is mounted adjacent the upper rim and is controlled by a control unit such that during a filling mode of t he bin, the detection of a book interrupting the beam lowers the floor panel so as to allow further filling of the bin up to the height of the optical sensor and during an unloading mode the operation is reversed. A battery pack is located in a cavity in the fron t wall and when being charged at a loading station the control unit automatically operates the filling mode and when disconnected the control unit automatically operates t he unloading mode. The actuator has two pairs of levers and an electrically actuated screw for moving the floor panel with a lower end of the screw housed in a bottom housing hung below the base.
|
