DRILLING AND LOADING
available on the P&H 77XD and 320XPC. The
system includes single unit, High Precision GPS
(HPGPS) remote control operations; an easy-to-
use operator interface; and integrated Hawkeye
360° camera system. The product can be
integrated with local site Wi-Fi. Safety features
include a physical lockout key; SIL-3 rated E-
stop; GPS-based geo-fencing; and 500 ms
communications watchdog.
The system is comprised of sensors that
project an array of beams to create an intricate
3D grid pattern calculating size and distance,
while differentiating between surrounding
ground conditions and nearby objects (stationary
as well as mobile). It delivers high accuracy and
repeatability for increased production. The
system is designed to drill within 10 cm of each
planned hole in a drill pattern. Consistency offers
better blasts, achieving desired fragmentation
sizing by drilling exactly to the drill plan.
The system uses two sensors fixed on the drill
to define the footprint of the decking platform.
The customer can define the GPS limits of their
boundary, creating a geo-fence. When the corners
of the platform reach the geo-fence, the drill is
limited in operation. HPGPS also enables control
accuracy of hole depth, taking the X, Y and Z axes
into consideration during drilling.
The system provides adjustment of the rotary
speed and feed rate of the drill to maintain the
optimal depth-of-cut. This includes advanced
exception handling that enables operators to
compensate and adjust on-the-fly to situations
that impact overall cycle time performance,
keeping the bit engaged. Examples include:
reacting to hole collapse; drill chip blockage in
between the string and wall; adjustments to
handle potentially adverse vibration conditions
and user feedback to avoid over-drilling.
Rudgormash updates flagship SBSH-250
Russia’s leading manufacturer, Rudgormash
received visitors from iron ore mining group PJSC
Stoylenskiy GOK in October 2016 who were at its
factory for preliminary acceptance of the drilling
rig of type SBSH-250 that had been
manufactured by that time and was being
prepared for shipment.
The drilling rig for the iron ore company
fundamentally differs from the previous drills of
this type and size and, says Rudgormash:
“embodies all requirements and
recommendations of the Stoylenskiy GOK
specialists. Our own design office can promptly
improve and modernise equipment according to
customer’s needs and requirements. We adhere
to the expert opinion of the repair and
maintenance specialists and we are open to
constructive feedback and suggestions. We value
the customers’ readiness for dialogue.”
In October, the OEM heard the opinions about
62 International Mining | APRIL 2017
The new Komatsu PC4000-11
Diesel Tier 4
Rudgormash drilling rigs
expressed by the minesite
repair teams, which are the
people that know first-hand
how vital it is to have
drilling equipment of good
quality, productivity and
serviceability in conditions
of continuous production.
Sergey Bulgakov, the
head of the drilling
department at Stoylenskiy GOK stated to
Rudgormash that the mine now has nine of its
drilling rigs and he considers that these are some
of the most reliable drilling rigs available, “the
quality and productivity of which totally satisfies
our needs. This time we have obtained your
newly modernised drilling rig SBSH-250. We
appreciate that your enterprise is always on the
move, always in progress, modernising its
equipment. Last year [2015] we already increased
our scope of drilling and we hope this year [2016]
to increase it even more.”
The feed cylinders of the mast have been
replaced by cylinders of smaller diameter, which
has doubled the speed of lowering and lifting
operations (at least 17 m/min) and resulted in a
productive capacity increase by 15-20%.
The mast structure and the block of feeding
mechanisms have changed fundamentally which
has made the mounting and dismounting (lower
cylinder anchor on the axle) operations more
comfortable.
All blocks for mechanical feeding have joints
on a pulley axle which makes the dismounting of
the block bearings easier, without extra load-
lifting mechanisms.
A cooler for the oil pumping station has been
used to reduce oil heating and provide for
comfortable operationn.
Upon the customer’s request, there is also an
option in the feeding drive that allows them to
calculate the travelled distance.
A fundamentally new cabin has also been
introduced. The cabin walls became more
hermetic and