The racking system using stacking cranes should be numbered according to the columns, layers and rows of the racks, so as to realize the automatic entry and exit of the warehouse to the designated cargo location, and it is also convenient to use electronic computers for warehouse management. In fact, most of the latest large-scale three-dimensional automatic warehouses use electronic computers for warehouse management. However, in order to save equipment investment, most of the small automatic warehouses still use manual control and semi-automatic control.
1. Manual control
Manual control is that the driver checks the cargo space number on the driver's desk of the stacking crane, and operates the joystick or button to complete the walking, lifting, and fork in and out.
2. Semi-automatic control
On the driver's desk of the stacking crane, the driver presses the button of the desired slot number, and the crane automatically completes various actions of walking and lifting, and stops at the designated slot number. The movement of the fork in and out is controlled by a manual joystick or with a button. Most of the return actions are to press the return button to automatically return to the original position.
3. Fully automatic control
This is a form of unmanned operation. The control panel is installed outside the crane and is commanded by buttons or punch cards. Therefore, as long as the start button is pressed, the remote control stacking crane can automatically enter and leave the warehouse. Recently, a storage device such as a magnetic core memory is used to store the inventory quantity or variety of each item number, and to carry out in-stock management.
4. Computer control
Set up a ground control panel directly connected to the electronic computer, and input the instructions for entering and leaving the warehouse into the electronic computer for centralized control. The incoming and outgoing instructions issued by the electronic computer are stored in the front box calculator on the ground control panel. Calculations such as varieties and times are implemented in the library management.
In large three-dimensional automatic warehouses, this management method is often used. In the small independent shelf warehouses that have been built, there are also some small electronic computers for warehouse management.
