Hydraulic control system
Pump discharge performance corresponding to the container load can be gotten by
variable displacement pumps and load sensing circuits. This system eliminates the
possibility, for instance, of the operation speed slowing down drastically when a heavy
container is lifted, and improved operation efficiency can thus be expected.
A number of pump circuits that are independent of each other so that simultaneous
operation and speed control of different functions, which are impossible with other
manufacturers’ equipment, have been enabled controls lifting, lowering and telescoping
of the boom. These mechanisms can also provide very convenient and user-friendly
functions such as vertical lifting and horizontal movement of containers.
Electronic control system
The structure of this reachstacker is characterized by its boom that can be retracted
and extended like a crane and its cab that is movable forward and backward. Each of
such movable parts is equipped with a device for controlling communications by
controller area network (CAN). This system simplifies wiring details and improve
reliability (Fig. 3). Fig.3
In addition, a touch-panel type colored liquid crystal monitor is installed in the
operator's cabin to display the basic equipment status indicators. These include engine
tachometer and fuel gauge as well as spreader position, current lifting load, maximum
permissible load, alarm, error messages and operation history that are very useful to
the user and service side (Fig. 4). Fig. 4