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AUTOMATIC OPERATING DEVICE<br />
Excavator operator has a challenging job to drive<br />
a pile vertically by keeping the pile on the linear<br />
movement. This requires the control of three<br />
different movements of boom, stick and bucket<br />
cylinder simultaneously. At the same time the angle<br />
of the pile is very difficult to see from the cabin of<br />
the excavator as a side view of the pile cannot be<br />
directly seen.<br />
<strong>Movax</strong> automatic operating device is developed to<br />
solve the problem. The main principle is that the<br />
operator controls one movement and computer<br />
controlled system takes care of the two remaining<br />
movements. This results to a linear movement of<br />
the pile.<br />
Working cycle with Auto Steering<br />
Automatic system<br />
calculates<br />
the position of the<br />
pile<br />
(distance and<br />
angle).<br />
Main boom, Stick<br />
boom and <strong>Movax</strong><br />
angles are measured<br />
by sensors.<br />
The pile is driven or<br />
extracted straight in<br />
vertical direction or<br />
in any other angle.<br />
Display unit recognises that<br />
the operator is controlling one<br />
movement (Main boom), and<br />
takes care of the two others<br />
(Stick and <strong>Movax</strong>). This is done by<br />
controlling the proportional valves.<br />
Cylinder movements<br />
are controlled by<br />
main valves.<br />
Valves of the automatic<br />
control the main valves of<br />
the excavator.<br />
Operator controls<br />
one movement<br />
(e.g. Main boom).<br />
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