GEAX
s.r.l.
Chapter 2
TRANPORTING THE DRILLING RIG
11
rubber tires provide insulation from the ground and allow very high voltages.
This risk remains even on the ground when the tracks are covered by
insulating material (rubber tracks).
Non-electric cables pose risks of a mechanical nature. They might be strong
enough to topple supporting structures before breaking, causing danger to
bystanders. After breaking, they might whip around violently as they release
the elastic energy accumulated.
During loading and unloading, persons on the ground should stay at
a safe distance.
2.2.3
Fastening
The drilling rig must be anchored to the semitrailer with strong stay wires
capable of preventing any movement.
2.3 Transportation
2.3.1
Configuration for transportation on truck / semitrailer
During transportation the drilling rig must be arranged in the
configuration shown in
fig. 2.2.2.3 o 2.2.2.4.
The kelly bar pin should
rest on the deck of the semitrailer in order to minimize the load on
the boom’s hydraulic cylinders and increase overall stability. The tool must be
detached. The undercarriage must be left extended. The engine must be
turned off and the key on the dashboard turned to OFF. The door (in cab
version) must be secured shut to avoid it opening during transportation.
Figure
8.4.2.1
shows the overall dimensions of the rig in its typical transport
configuration.
2.3.2
Centre of gravity
In the transport configuration the rig’s centre of gravity is located
approximately 40-50 cm further of the slewing ring axis.
2.3.3
Road transport
The truck / semitrailer must be adequately sized to carry the drilling rig, both
in terms of dimensions and load capacity. Make sure the rig is arranged
compatibly with the maximum allowable load of every axle.
Also, make sure that the planned route is large enough in width and height
(narrowings in the road, bridges, low overhead cables, traffic signs, etc.).
Check the capacity of any bridges along the route. The truck should proceed
