Civil Engineering Reference
In-Depth Information
Cutting automation.
The use of an appropriate system of sensors enables automated
cutting. Depending on the particular application, the machine driver can decide between
the functions profile display, profile control, partially automated excavation and fully au-
tomated excavation.
These options are:
-
Profile display:
The design profile is displayed on the screen and the machine driver
stops at the edge of the profile, with the approaching of the profile edge being an-
nounced by a visual and/or acoustic warning signal. The system does not take over
control.
-
Profile control:
The control system stops the horizontal/vertical movement of the cut-
ting head when the edge of the profile is reached.
-
Semi-automatic:
The control system stops the horizontal/vertical movement of the cut-
ting head when the edge of the profile is reached, and the next cut is automatically
prepared, with the load on the cutting drive being included in the calculation.
-
Fully automatic:
The control system cuts a complete round inside the edges of the
profile, if required with a defined cutting pattern. The control system takes into account
parameters like position, cutting load, forces and acceleration in the control of the cut-
ting sequence. At the moment (2003), an experienced and practiced machine driver can
still cope better with heavily inhomogeneous ground conditions than fully automatic
operation.
The automation of the cutting process is of considerable assistance to the machine driver
and the movements of the cutting head are not dependent on the capability or tiredness of
the operator.
Remote control.
Radio or cable remote control (Fig. 6-18) makes it possible for the ma-
chine operator to control the position of the machine from a position where he has the best
overview. This is of particular advantage when the machine has to be moved frequently
or for safety reasons.
Figure 6-18
Radio remote
control for ALPINE MINER AM
105 with return information.
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