Dynapac PL2000S, Руководство по эксплуатации

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B 7
B PL
2000.
G
B
7-
34
-
10.
01
Traction system, steering system, brakes
- Traction system
Four large crawler units, suspended in floating manner on the strut towers, hydrostat-
ically driven and fitted with sensor-monitored anti-slip control are equipped with slip-
free plastic pads. They provide excellent traction when cornering and in all usage po-
sitions.
Driving and working gear can be selected. The speed limits required can be set be-
forehand using the button provided or can be changed during operations. The control
lever of the travel drive then allows the speed to be gradually adjusted in this driving
range from zero to the maximum for both forwards and reverse travel.
When overloaded, the machine feed is automatically reduced using limit load control.
- Steering system
The machine has fully-tracked steering and therefore has high manoeuvrability.
When used in conjunction with a pre-selection button, the control lever allows the ma-
chine to be driven in four different steering variations and the speed to be changed at
the same time:
- "only front-steered",
- "only rear-steered",
- "co-ordinated front and rear-steered"
- "driving in crab steering"
If necessary, both axes are brought into the straight ahead position at the touch of a
button.
- Brakes: The machine is braked by the auto-inhibit of the hydrostatic drive and by
the hydraulic spring accumulator brakes integrated in the gears of all four drive
units. The machine is braked when the control lever is swivelled back from the max-
imum position to neutral. The accumulator spring brakes are activated both in the
neutral position (during machine "Stop") and when the engine is shut down and
they act as parking brakes.
During a towing procedure, the spring accumulator brakes can be hydraulically dis-
engaged by a manual pump.
- Strut towers: The strut towers are secured to the vehicle frame. The cold planer is
lowered and raised in a controlled manner into the position required via these tow-
ers. The milling drum is therefore moved into the correct cutting position and com-
pliance can be maintained with the grading depth and slope required during milling.
The height of the strut towers is adjusted using an integrated hydraulic cylinder
which is activated by proportional valves.
The grading depth and slope are set by means of the two front columns. The height
of each of the front strut towers can be adjusted individually. The two rear columns
operate in tandem and therefore adapt themselves to the appropriate machine po-
sition. For service purposes, the rear strut towers can also be changed over to in-
dividual adjustment mode.
The strut towers make a large lifting height possible so that the space required be-
tween the machine and ground is always provided during difficult manoeuvres such
as loading.