Spotlight Feature Articles Joy Global Drilling & Loading Apr17 | Page 5

DRILLING AND LOADING
The new Joy P&H
77XD is compatible
with Joy Global’s
new high-precision
GPS tele-remote
operation console
and automation
solution
extend equipment life, reduce costs and improve
safety, including:
n Robust solid boxer style mast construction
with a simple rack and pinion pulldown
design to reduce maintenance effort while
increasing drilling forces
n Innovative automatic bit handling and pipe
handling functions to improve safety and
increase machine utilisation
n Intelligent compressor control, which
manages power consumption and associated
bailing velocity, to lower operating costs
Several other smart features are available for
the drill to facilitate improved cycle times,
including enhanced auto drill and electronic load
sense control. The 77XD is compatible with Joy
Global’s new high-precision GPS tele-remote
operation console and automation solution,
which includes features such as geo fencing,
auto navigation, auto level, auto drill, obstacle
detection and mitigation, Hawkeye 360° camera
system, and more.
Joy Global states: “Drill automation features
help our customers improve drill utilisation.
Higher utilisation leads to additional holes
drilled, higher production rates and, ultimately,
greater potential customer revenue.”
In more detail, the automation solution is
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
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 Bulga kov, 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 heat-and-sound-proof due to
sandwich panel insulation. A triple glass pane
was applied instead of conventional glass
windows.
A new control chair has been installed in the
cabin as the basic control unit of the drilling rig
and the new control system and CAN-line have
proved their usefulness in avoiding excessive
wiring.
APRIL 2017 | International Mining