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2 ABB Industries
ABB, the only supplier ofcomplete mine hoist systems
ABB has the unique capability to
engineer, deliver, install and pro-
vide after-sales service of entire
mechanical and electrical mine
hoist systems of all types. They
include friction hoists, single drum
hoists as well as double drum
hoists. We offer the
Lowest possible life cycle cost,
LCC
Shorter project execution time
Single source for service and
spare parts.
Our global presence makes us
always close to our customers.
Strong engineering resources are
available for feasibility studies and
conceptual solutions.
Hoist control and monitoring
systems
ABB's hoist control system is based
on Industrial
IT
technology. Comply-ing with stringent safety and avail-ability
requirements of mine hoistapplications, this powerful,
user-friendly control system is built upfrom ABB ControlIT and
ABBOperateIT.
The fully automatic system includescontrol of feeders, conveyors
andmeasuring flasks at the loadinglevel as well as pushbutton
controlof multi-level man/material hoists.The system also provides
semi-
automatic testing of safety functions
and prints out comprehensiveproduction and
performancereports.
The AHM 110 Advant HoistMonitor is an independent unit
thatprovides protection against over-speed and overwinding.
Drive systems
ABB is the leader in drive technology.The latest technology,
DriveITACS6000SD, with DTC, Direct Torque
Control, using IGCT, IntegratedGate Commutated Thyristors,
fortorque and speed control of ACmotors is now well proven forhoist
applications. It offers highefficiency, superior control
perform-ance, low voltage drop in thesupply network and low
harmonicdistortion as well as very low flicker.
Synchronous motors are used fordirect drives and induction
motorsfor geared drives.
DC motors of all sizes are avail-able for geared drive
applicationsand for thyristor converter drives.All drives are
equipped with
powerful maintenance software,Drives Window.
Hoist machinery
ABB employs powerful FEA and3D tools for the engineering of
thesystems and their components. Fullquality assurance is
implementedthroughout the engineering and
manufacturing processes.
Pyhsalmi head frame. ABB has delivered acomplete package of
mechanical andelectrical equipment including the DriveIT
ACS 6000SD synchronous motor drive.
ABBs AHM 110 Advant Hoist Monitorprovides very accurate
monitoring of
essential safety parameters.
Block diagram of DTC,
Direct Torque Control,
drive with synchronous
motor.
Friction hoist with pulley diameter of 4.5 m.
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ABB Industries 3
Pulleys and drums are availablein split or unsplit design.
Brakediscs are welded or bolted on tothe shell plate. SKF spherical
rollerbearings are selected to ensure highefficiency and long
service life.
Hydraulic disc brake system
Multi-caliper disc brakes are usedfor emergency stop and holding
at
standstill.The hydraulic control unit is equip-ped with dual
systems to meet thehighest safety requirements. Thecorrect
operation of all componentsis continuously monitored.
Controlled retardation provides theset retardation rate
independent ofthe actual payload and direction ofmovement. It also
increases themargins to rope slip in friction hoists.
Rope Oscillation ControlFor mine hoists operating in deepshafts,
ABB has developed ROC,Rope Oscillation Control. Integratedinto the
electric drive system, itgreately reduces the oscillationsduring
the hoisting cycle whileincreasing the rope life and thetransport
comfort during men hoist-ing. Integrated into the emergencycontrol
brake circuit, it allows thestatic rope safety to be reduced
inaccordance with SABS 0294s
(South Africa) requirements.
Shaft equipment
ABB engineers and supplies com-plete shaft equipment
includingskips, cages, guides, head and tailropes with their
attachments. Meas-uring flasks and weighing convey-ors are also
part of ABBs productportfolio.
Argus Advanced Diagnostic
ToolArgus is a powerful maintenancetool for local or remote
fault find-ing, condition monitoring andmonitoring of the mine
hoist per-formance. It is of modular designand integrated into the
hoist con-trol and drive system. Using theremote diagnostic
function, minehoist specialists in ABB servicecenters can identify
the majorityof faults and address them.
Modernization of existing mine
hoists
In recent years, ABB has executednumerous projects for the
modern-ization of mine hoists manufacturedby ABB or others. They
range fromminor upgrades of single hoists tolarge revamps of
complete hoistingplants such as that at LKABs minein Kiruna,
Sweden, where a total often hoists with a combined capac-ity of
26.5 million tonnes per year
were modernized.
A new hydraulically controlled disc brake
system was supplied by ABB to Alrosa, the
Russian diamond mining company, for the
revamping of a mine hoist in one of its
diamond mines in Mirny in eastern Siberia.
Hydraulic disc brake control unit.
One of the two 13-tonne deadweight skips
prior to installation at BHP MineralsCannington Mine,
Australia.
LKAB, Kiruna, Sweden. A total of ten hoists
with a combined capacity of 26.5 million
tonnes per year have been modernized.
A block diagram of a friction hoist.
