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Products

Highwall Pumps

The Highwall Pump is designed to have the main frame / power pack situated on top
of the highwall edge, with the wet-end lowered over the pit wall and into the water
accumulation on the pit floor.

The advantages of this pump format over conventional pit type pumps are:

  • Quick mobilization and demobilization with minimum labour requirements.
  • The pump delivery hose is positioned in place with the wet-end.
  • The bulk of the pump unit remains clear of mining operations.
  • Eliminates the need for Pump Crew to work in the pit near the Highwall.
  • Access to water accumulating in a pit being developed by dragline operation is achieved without hindering the operations.

By incorporating a second (booster) pump unit to the Highwall Pump, performance is improved to 100L/sec @ 200m head TDH. The booster pump is hard plumbed into the outlet of the primary pump, allowing for simple and efficient transferring of water at high head.

By utilizing a single pump unit to lift to 200m, operating of a single engine, all complexities of setting up staging pumps, including manoeuvring of a second unit, connecting pipe work, balancing performance, and monitoring both units is eliminated.

HW9000 BoosterThis unit is designed to have the main frame / power pack situated adjacent to the highwall edge, with the wet-end lowered over the pit wall and into the water accumulation on the pit floor.  The advantages of this pump format over conventional pit type pumps are:

  • Quick mobilisation and demobilisation with minimum labour requirements
  • The pump delivery hose is positioned in place with the wet-end
  • The bulk of the pump unit remains clear of mining operations
  • The unit is clear of muddy conditions, and easily accessed for service
  • Access to water accumulating in a pit being developed by dragline operation is achieved without hindering operations

By incorporating a second (booster) pump unit to the Highwall Pump, performance is improved to 200L/sec @ 200m head TDH.  The booster pump is hard plumbed into the outlet of the primary pump, allowing for simple and efficient transferring of water at high head.

By utilising a single pump unit to lift to 200m, operating of a single engine, all complexities of setting up staging pumps, including manoeuvring of a second unit, connecting pipe work, balancing performance, and monitoring both units is eliminated.

Water Pump Primary

PumpHyd Driven – Hard Metal (28% chrome) Slurry Pump
SuctionFabricated screened suction – galvanized – footvalve not fitted
Drive355cc fixed displacement axial piston motor
SpeedMax 1800 R/M
ArrangementMotor drives pump shaft through a coupling supported by taperedroller bearings in a sealed housing. Bearings are lubed by case oil. Mechanical seal prevents leakage.
Pump Performance200 L/s @ 100m head TDH unworn pump, clean water @ 1700rpm pump speed.
Pump CurveLegra 9000 Curve H96-200

Water Pump Booster

PumpHyd Driven – Hard Metal (28% chrome) Slurry Pump
Suction10” drop pipe from reel
Drive355cc fixed displacement axial piston motor
SpeedMax 1800 R/M
ArrangementMotor drives pump shaft through a coupling supported by tapered roller bearings in a sealed housing. Bearings are lubed by case oil. Mechanical seal prevents leakage.
Pump Performance200 L/s @ 100m head TDH unworn pump, clean water @ 1700rpm pump speed

Wetend Positioning Support

Wheels2 x 750 x 16” wheels fitted to 1550mm x 65mm SHS axle are mounted across the wet-end, and assist in positioning the wet-end during lifting or lowering.
Support bracketHydraulically (ram) operated support constructed from RHS and Flat, acts as support for the wet-end during travelling, and hose positioning during lowering.

Water Conduit

Length / Type120m of 250 O.D. Poly standard supply.
Hydraulic Hoses 2" High pressure - Multi Spiral - pressure hose to motor drive.
2" Medium pressure - Double Braid - hose return line.

Hose Reel

Size 3625 dia drum. 4500 dia rim. Capacity to 120m of 250 OD Poly.
Construction6-150x50x4 R.H.S spokes each side welded to hub flange and rim. 5mm M.S. plate drum.
35x35x2.5 HT SHS rims.
Reel Method of SupportHydraulic Gland and Water Discharge Gland
Water Discharge300 NB Table E flange 300mm from ground level. 40NB Ball valve fitted.

Main Frame Type

Heavy skid base – fully weld fabricated unit construction comprised of UB side runners (with wear plate).  Heavy R.H.S. cross members, supporting the R.H.S. reel mounting frame.  Heavy front tube with push pads, engine mounting, engine canopy, front bars for engine protection, fuel tank mountings, oil reservoir mountings, safety mesh mountings, and tow chain.

DimensionOverall – 16.335m x 2.55m x 5.2m High
WeightApprox 20 Tonne
Skid Runners360UB56
Wear Plate20mm Bisalloy 500 - 250mm wide
Cross Members250x150x6 R.H.S
Reel Frame Uprights2-250x150x6 & 2 150x150x6mm
Reel Frame200x100x6 R.H.S
Extension Beams75x75x4 R.H.S & 127 x 75 x 4 R.H.S.
Extension Bracing65x65x3 B.H.S and 50x50x3 S.H.S AS1163 C450LO Duragal
Push Pads250x150x9 R.H.S capped w/-20 ms plate
Engine Mounting150x100x12 Angle Iron
Engine CanopyFormed 3mm flat mild steel
Engine Protection200.N.B. sched 40 pipe mounted on 360 U.B. uprights
Towing Chains2 of 3.4m long of 20mm Hercalory with 260x140x38 tow-ring link (inside dimension).
Attached front end only.
Hose Roller Guide System6 Shaped roller, bearing mounted in two 12mm MS plate chain driven from four hydraulic motors, in series with the reel motor.

Hydraulic System

Hydraulic Pump355cc pressure comp flow control piston pump. Flex coupled to engine flywheel
Operating Speed1800 R/M
Flow at Duty639 L/M
Max Pressure Rating4060 P.S.I. (280 bar)
Operating Pressure3625 P.S.I. (250 bar)
Main Relief Valve1" high pressure spike relief - catridge type
Twin Port Rotating GlandLegra type HD for 1½" fittings - H25-000
Auxiliary Control Valve4 Bank load sense on reel, slew, and tilt and pump support
Reel DriveHydraulic motor driving via a 30:1 reduction box & 5:1 x 2” chain reduction
Hose Drive Motor 4 of geroler hydraulic motors
Load Check ValveDouble acting overcentre valves and hydraulic brake coupled to the reel motor
High Pressure Hose System2" dia. multi spiral high pressure
Return Line2" dia. double braid low pressure.
Hoses-Auxiliary System½" or 5/8" dia. Double braid medium pressure
Reservoir800Lts mild steel fabricated, fitted with oil outlet, oil return, level temperature sight glass, high and low level oil protection, drain outlet.
Sand blasted internally.
Auxiliary Hyd Reservoir100Lts Auxiliary tank fitted to main frame, pumped into main reservoir via the hydraulic filters, and incorporating an electrically operated diaphragm pump. Used for top up of main reservoir.
Return Line Filter 2 of 1½" dual element cartridge type. Watchdog pressure gauge fitted, and shuts down engine should elements become clogged.
OilMineral Oil of ISO viscosity grade 22

Power Unit

EngineC27 Cat. Turbo charged, after cooled V12 cyl.
Electrical/Watchdog24V Electric’s, 2 work lights fitted, battery isolator fitted.
Engine will be monitored by OEM supplied engine management system all other perameters will be monitored by PLC controlled board with digital fault display.
Fuel Cell3000Lts capacity with Wiggins fittings. Weld fabricated mild steel mounted on
water discharge side of frame. Drain plug fitted. Blasted internally.
Fuel Lines12mm hydraulic hose on supply line. 12mm hydraulic hose return line.

Painting

All frame work blasted to A.S. class 2½, primed and painted Interfine 629 White.

Functions

Engine at 1000RPM to 1200 RPMAuxiliary control valve functions. 4 functions - Wet-end lift/ lower
Roller Plate Slew for aligning the hose to reel during reclaim
Roller Plate traverse for assisting hose and wet-end entry to pit
Wet-End Support Bracket supports wet-end and guides hose on initial wall contact
Engine up to 1800 RPMOperation of pump functions. Booster Pump speed is controlled with PLC. PLC maintains speed of booster pump to ensure a set pressure is maintained at booster pump suction.

The foregoing specification is correct at time of publication however, LEGRA reserve the right
to amend the specification as required in keeping with market development.

Legra Highwall PumpsThis unit is designed to have the main frame / power pack situated adjacent to the highwall edge, with the wet-end lowered over the pit wall and into the water accumulation on the pit floor.  The advantages of this pump format over conventional pit type pumps are:

  • Quick mobilization and demobilization with minimum labour requirements
  • The pump delivery hose is positioned in place with the wet-end
  • The bulk of the pump unit remains clear of mining operations
  • The unit is clear of muddy conditions, and easily accessed for service
  • Access to water accumulating in a pit being developed by dragline operation is achieved without hindering operations

Water Pump

PumpHyd Driven – Hard Metal (28% chrome) Slurry Pump
SuctionFabricated screened suction – galvanized – footvalve not fitted
Drive355cc fixed displacement axial piston motor
SpeedMax 1800 R/M
ArrangementMotor drives pump shaft through a coupling supported by tapered roller bearings in a sealed housing. Bearings are lubed by case oil. Mechanical seal prevents leakage.
Pump Performance200 L/s @ 100m head TDH unworn pump, clean water @ 1700rpm pump speed.
Pump CurveGIW Curve E 4D-92

Wetend Positioning Support

Wheels2 x 750 x 16” wheels fitted to 1550mm x 65mm SHS axle are mounted across the
wet-end, and assist in positioning the wet-end during lifting or lowering.
Support bracketHydraulically (ram) operated support constructed from RHS and Flat, acts as support for the wet-end during travelling, and hose positioning during lowering.

Water Conduit

Length / Type120m of 250 O.D. Poly standard supply.
Hydraulic Hoses2" High pressure - Multi Spiral - pressure hose to motor drive.
2" Medium pressure - Double Braid - hose return line.

Hose Reel

Size3625 dia drum. 4500 dia rim. Capacity to 120m of 250 OD Poly.
Construction6-150x50x4 R.H.S spokes each side welded to hub flange and rim. 5mm M.S. plate drum.
35x35x2.5 HT SHS rims.
Reel Method of SupportHydraulic Gland and Water Discharge Gland
Water Discharge300 NB Table E flange 300mm from ground level. 40NB Ball valve fitted.

Main Frame Type

Heavy skid base – fully weld fabricated unit construction comprised of UB side runners (with wear plate).  Heavy R.H.S. cross members, supporting the R.H.S. reel mounting frame.  Heavy front tube with push pads, engine mounting, engine canopy, front bars for engine protection, fuel tank mountings, oil reservoir mountings, safety mesh mountings, and tow chain.

DimensionOverall – 16.335m x 2.55m x 5.2m High
Ground contact 7300mm. Mainframe 7900mm x 2400mm.
WeightApprox 20 Tonne
Skid Runners360UB56
Wear Plate20mm Bisalloy 500 - 250mm wide
Cross Members250x150x6 R.H.S
Reel Frame Uprights2-250x150x6 & 2 150x150x6mm
Reel Frame200x100x6 R.H.S
Extension Beams75x75x4 R.H.S & 127 x 75 x 4 R.H.S.
Extension Bracing65x65x3 B.H.S and 50x50x3 S.H.S AS1163 C450LO Duragal
Push Pads250x150x9 R.H.S capped w/-20 ms plate
Engine Mounting150x100x12 Angle Iron
Engine CanopyFormed 3mm flat mild steel
Engine Protection200.N.B. sched 40 pipe mounted on 360 U.B. uprights
Towing Chains2 of 3.4m long of 20mm Hercalory with 260x140x38 tow-ring link (inside dimension).
Attached front end only.
Hose Roller Guide System6 Shaped roller, bearing mounted in two 12mm MS plate chain driven from four hydraulic motors, in series with the reel motor.

Hydraulic System

Hydraulic Pump355cc pressure comp flow control piston pump. Flex coupled to engine flywheel
Operating Speed1800 R/M
Flow at Duty639 L/M
Max Pressure Rating4060 P.S.I. (280 bar)
Operating Pressure3625 P.S.I. (250 bar)
Main Relief Valve1" high pressure spike relief - catridge type
Twin Port Rotating GlandLegra type HD for 1½" fittings - H25-000
Auxiliary Control Valve4 Bank load sense on reel, slew, and tilt and pump support
Reel DriveHydraulic motor driving via a 30:1 reduction box & 5:1 x 2” chain reduction
Hose Drive Motor 4 of geroler hydraulic motors
Load Check ValveDouble acting overcentre valves and hydraulic brake coupled to the reel motor
High Pressure Hose System2" dia. multi spiral high pressure
Return Line2" dia. double braid low pressure.
Hoses-Auxiliary System½" or 5/8" dia. Double braid medium pressure
Reservoir800Lts mild steel fabricated, fitted with oil outlet, oil return, level temperature sight glass, high and low level oil protection, drain outlet.
Sand blasted internally.
Auxiliary Hyd Reservoir100Lts Auxiliary tank fitted to main frame, pumped into main reservoir via the hydraulic filters, and incorporating an electrically operated diaphragm pump. Used for top up of main reservoir.
Return Line Filter1 of 3" cartridge type. Watchdog pressure gauge fitted, and shuts down engine should elements become clogged.
OilMineral Oil of ISO viscosity grade 22

Power Unit

EngineCummins QSX15 or C15 Caterpillar. Turbo charged, after cooled 6 cyl.
Electrical/Watchdog24V Electric’s, 2 work lights fitted, battery isolator fitted.Engine will be monitored by OEM supplied engine management system all other perameters will be monitored by PLC controlled board with digital fault display.
Fuel Cell2000Lts capacity with Wiggins fittings. Weld fabricated mild steel mounted on water discharge side of frame. Drain plug fitted. Blasted internally.
Fuel Lines10mm hydraulic hose on supply line. 10mm hydraulic hose return line.

Painting

All frame work blasted to A.S. class 2½, primed and painted Interfine 629 White.

Functions

Engine at 1000RPM to 1200 RPMAuxiliary control valve functions. 4 functions - Wet-end lift/ lower
Roller Plate Slew for aligning the hose to reel during reclaim
Roller Plate traverse for assisting hose and wet-end entry to pit
Wet-End Support Bracket supports wet-end and guides hose on initial wall contact
Engine up to 1800 RPMOperation of pump function

The foregoing specification is correct at time of publication however, LEGRA reserve the right
to amend the specification as required in keeping with market development.

Legra Highwall PumpsThis unit is designed to have the main frame / power pack situated adjacent to the highwall edge, with the wet-end lowered over the pit wall and into the water accumulation on the pit floor.  The advantages of this pump format over conventional pit type pumps are:

  • Quick mobilization and demobilization with minimum labour requirements
  • The pump delivery hose is positioned in place with the wet-end
  • The bulk of the pump unit remains clear of mining operations
  • Eliminates the need for Pump Crew to work in the pit near the Highwall
  • Access to water accumulating in a pit being developed by dragline operation is achieved without hindering the operations
  • Able to operate and be serviced in all weather conditions

By incorporating a second (booster) pump unit to the Highwall Pump, performance is improved to 100L/sec @ 200m head TDH.  The booster pump is hard plumbed into the outlet of the primary pump, allowing for simple and efficient transferring of water at high head.

By utilizing a single pump unit to lift to 200m, operating of a single engine, all complexities of setting up staging pumps, including manoeuvring of a second unit, connecting pipe work, balancing performance, and monitoring both units is eliminated.

Water Pump Primary

PumpCast Iron Volute. 28% Chrome Impeller and Suction Plate
SuctionFabricated screened suction – Galvanized. No footvalve fitted.
Drive160cc fixed displacement axial piston motor
SpeedMax 2200 R/M
ArrangementMotor drives pump shaft through a coupling supported by tapered roller bearings in a sealed housing. Bearings are lubricated by case oil. Mechanical seal prevents leakage.
Pump Performance100 L/s @ 100m head unworn pump, clean water @ 2150rpm pump speed
Pump CurveImpeller clearance is adjusted by bolt/lock nut adjustment

Water Pump Booster

PumpCast Iron Volute. 28% Chrome Impeller and Suction Plate.
Suction8” drop pipe from reel
Drive160cc fixed displacement axial piston motor
SpeedMax 2200 R/M
ArrangementMotor drives pump shaft through a coupling supported by tapered roller bearings in a sealed housing. Bearings are lubricated by case oil. Mechanical seal prevents leakage.
Pump Performance100 L/s @ 100m head unworn pump, clean water @ 2150rpm pump speed
Pump Curve
Impeller clearance is adjusted by bolt/lock nut adjustment.

Wetend Positioning Support

Wheels2 x 750 x 16” wheels fitted to 1550mm x 40mm axle are mounted across the wet-end, and assist in positioning the wet-end during lifting or lowering.
Support bracketHydraulically (ram) operated, acts as support for the wet-end during travelling, and hose positioning during lowering.

Water Conduit

Length / Type125m of 200f Poly standard supply.
Hydraulic Hoses1-1½" High pressure - Multi Spiral - pressure hose to motor drive.
1-1½" Medium pressure - Double Braid - hose return line.

Hose Reel

Size2900f drum. 3700f rim.. Capacity to 125m of 200f Poly.
ConstructionR.H.S spokes each side welded to hub flange and rim. 5mm M.S. plate drum.
Reel Method of SupportHydraulic Gland and Water Discharge Gland
Water Discharge200NB Table E flange 300mm from ground level. 40NB Ball valve fitted.

Main Frame Type

Heavy skid base – fully weld fabricated unit construction comprised of UB side runners (with wear plate).  Heavy R.H.S. cross members, supporting the R.H.S. reel mounting frame. Heavy front tube with push pads, engine mounting, engine canopy, front bars for engine protection, fuel tank mountings, oil reservoir mountings, safety mesh mountings, and tow chain.

DimensionOverall – 13500mm x 2850mm x 4059mm
Ground contact 6700mm x 2830mm. Mainframe 7300mm x 2700mm.
Dry Weight14 tonne
Skid Runners360UB56. Fitted with 20mm Bisalloy 500 Wear Plate.
Jib Extension Beams75x75x3 R.H.S & 127 x 75 x 3 R.H.S
Extension Bracing65x65x3 R.H.S and 50x50x3 S.H
Push Pads250x150x9 R.H.S capped w/-20 ms plate.
Engine Mounting150x100x12 Angle Iron
Engine CanopyFormed 3mm flat mild steel
Engine Protection200.N.B. sched 40 pipe mounted on 360 U.B. uprights
Towing Chains
2 of 3.4m long of 20mm Hercalloy with 260x140x38 tow-ring link at front.

Hydraulic System

Hydraulic Pump2 of Rexroth A11VLO190 pressure compensated flow control piston pumps. In Tandem. Coupled to engine flywheel.
Operating Speed1800 R/M
Flow at Duty340 L/m. per pump
Max Pressure Rating4060 P.S.I. (280 bar)
Operating Pressure3625 P.S.I. (250 bar)
Auxiliary Control Valve4 Bank load sense on reel, slew, and tilt and pump support.
Reel DriveHydraulic motor driving via a 30:1 reduction box & 5:1 x 2” chain reduction.
Load Check ValveDouble acting overcentre valves and hydraulic brake coupled to the reel motor.
High Pressure Hose System1½"f. multi spiral high pressure.
Return Line1½"f double braid low pressure.
Hoses-Auxiliary System½" or 5/8"f double braid medium pressure.
Reservoir800Lts mild steel fabricated, fitted with oil outlet, oil return.
Auxiliary Hyd Reservoir100Lts Auxiliary tank fitted to main frame, pumped into main reservoir via the hydraulic filters, and incorporating a 12v transfer pump.
Return Line Filter2 of 1½" dual element cartridge type. 3 Micron Nominal Filtration
OilMineral Oil of ISO viscosity grade 22

Power Unit

EngineCat (C15) or Cummins (QSX15). Turbo charged, after cooled 6 cylinders. Other options available on request
Engine Management Programmable Logic Control (PLC) controls and monitors all shut-down functions. Protection on engine oil pressure, radiator level, engine temperature, high and low levels of hydraulic oil, high and low hydraulic pressure, high and low water pressure at Booster Pump Suction, and hydraulic filter pressure. First out indicator identifies source of engine shutdown PLC operates speed of Booster Pump to maintain synch with Primary Pump.
Fuel Cell2200Lts capacity with Wiggins fittings.

Painting

All frame work blasted to A.S. class 2½, primed and painted Interfine 629 White.

Functions

Engine at 800RPM to 1000 RPMAuxiliary control valve functions. 4 functions - Wet-end lift/ lower
Roller Plate Slew for aligning the hose to reel during reclaim
Roller Plate traverse for assisting hose and wet-end entry to pit
Wet-End Support Bracket supports wet-end and guides hose on initial wall contact
Engine up to 1800 RPMOperation of pump functions. Booster Pump speed is controlled with PLC. PLC maintains speed of booster pump to ensure a set pressure is maintained at booster pump suction.

The foregoing specification is correct at time of publication however, LEGRA reserve the right to amend the specification as required in keeping with market development.

Legra Highwall PumpsThis unit is designed to have the main frame / power pack situated adjacent to the highwall edge, with the wet-end lowered over the pit wall and into the water accumulation on the pit floor. The advantages of this pump format over conventional pit type pumps are:

  • Quick mobilization and demobilization with minimum labour requirements
  • The pump delivery hose is positioned in place with the wet-end
  • The bulk of the pump unit remains clear of mining operations
  • Eliminates the need for Pump Crew to work in the pit near the Highwall
  • Access to water accumulating in a pit being developed by dragline operation is achieved without hindering the operations
  • Able to operate and be serviced in all weather conditions

Capacity to 100L/sec @ 100M Head

Water Pump

PumpCast Iron Volute. 28% Chrome Impeller and Suction Plate
SuctionFabricated screened suction – Galvanized. No footvalve fitted.
Drive160cc fixed displacement axial piston motor
SpeedMax 2200 R/M
ArrangementMotor drives pump shaft through a coupling supported by tapered roller bearings in a sealed housing. Bearings are lubricated by case oil. Mechanical seal prevents leakage.
Pump Performance100 L/s @ 100m head unworn pump, clean water @ 2150rpm pump speed
Pump CurveImpeller clearance is adjusted by bolt/lock nut adjustment

Wetend Positioning Support

Wheels2 x 750 x 16” wheels fitted to 1550mm x 40mm axle are mounted across the wet-end, and assist in positioning the wet-end during lifting or lowering.
Support bracketHydraulically (ram) operated, acts as support for the wet-end during travelling, and hose positioning during lowering.

Water Conduit

Length / Type125m of 200f Poly standard supply.
Hydraulic Hoses1-1½" High pressure - Multi Spiral - pressure hose to motor drive.
1-1½" Medium pressure - Double Braid - hose return line.

Hose Reel

Size2900f drum. 3700f rim.. Capacity to 125m of 200f Poly.
ConstructionR.H.S spokes each side welded to hub flange and rim. 5mm M.S. plate drum.
Reel Method of SupportHydraulic Gland and Water Discharge Gland
Water Discharge200NB Table E flange 300mm from ground level. 40NB Ball valve fitted.

Main Frame Type

Heavy skid base – fully weld fabricated unit construction comprised of UB side runners (with wear plate).  Heavy R.H.S. cross members, supporting the R.H.S. reel mounting frame. Heavy front tube with push pads, engine mounting, engine canopy, front bars for engine protection, fuel tank mountings, oil reservoir mountings, safety mesh mountings, and tow chain.

DimensionOverall – 12635mm x 2550mm x 4059mm
Ground contact 6400mm x 2628mm. Mainframe 7400mm x 2400mm.
Dry Weight12.3 tonne
Skid Runners360UB56. Fitted with 20mm Bisalloy 500 Wear Plate.
Jib Extension Beams75x75x3 R.H.S & 127 x 75 x 3 R.H.S.
Extension Bracing65x65x3 R.H.S and 50x50x3 S.H.S.
Push Pads250x150x9 R.H.S capped w/-20 ms plate.
Engine Mounting150x100x12 Angle Iron
Engine CanopyFormed 3mm flat mild steel
Engine Protection200.N.B. sched 40 pipe mounted on 360 U.B. uprights
Towing Chains2 of 3.4m long of 20mm Hercalloy with 260x140x38 tow-ring link at front.

Hydraulic System

Hydraulic PumpRexroth A11VLO190 pressure compensated flow control piston pump. Coupled to engine flywheel.
Operating Speed2000 R/M
Flow at Duty340 L/m. per pump
Max Pressure Rating4060 P.S.I. (280 bar)
Operating Pressure3625 P.S.I. (250 bar)
Auxiliary Control Valve4 Bank load sense on reel, slew, and tilt and pump support.
Reel DriveHydraulic motor driving via a 30:1 reduction box & 5:1 x 2” chain reduction.
Load Check ValveDouble acting overcentre valves and hydraulic brake coupled to the reel motor.
High Pressure Hose System1½"f. multi spiral high pressure.
Return Line1½"f double braid low pressure.
Hoses-Auxiliary System½" or 5/8"f double braid medium pressure.
Reservoir800Lts mild steel fabricated, fitted with oil outlet, oil return.
Auxiliary Hyd Reservoir100Lts Auxiliary tank fitted to main frame, pumped into main reservoir via the hydraulic filters, and incorporating a 12v transfer pump.
Return Line Filter2 of 1½" dual element cartridge type. 3 Micron Nominal Filtration
OilMineral Oil of ISO viscosity grade 22

Power Unit

EngineCat (C15) or Cummins (QSX15). Turbo charged, after cooled 6 cylinders. Other options available on request
Engine ManagementProgrammable Logic Control (PLC) controls and monitors all shut-down functions. Protection on engine oil pressure, radiator level, engine temperature, high and low levels of hydraulic oil, high and low hydraulic pressure, and hydraulic filter pressure. Display indicator identifies source of engine shutdown.
Fuel Cell2200Lts capacity with Wiggins fittings

Painting

All frame work blasted to A.S. class 2½, primed and painted Interfine 629 White.

Functions

Engine at 800RPM to 1000 RPMAuxiliary control valve functions. 4 functions - Wet-end lift/ lower
Roller Plate Slew for aligning the hose to reel during reclaim
Roller Plate traverse for assisting hose and wet-end entry to pit
Wet-End Support Bracket supports wet-end and guides hose on initial wall contact
Engine up to 1800 RPMOperation of pump functions. Booster Pump speed is controlled with PLC. PLC maintains speed of booster pump to ensure a set pressure is maintained at booster pump suction.

The foregoing specification is correct at time of publication however, LEGRA reserve the right to amend the specification as required in keeping with market development.

Legra Highwall PumpsThis unit is designed to have the main frame / power pack situated adjacent to the highwall edge, with the wet-end lowered over the pit wall and into the water accumulation on the pit floor. The advantages of this pump format over conventional pit type pumps are:

  • Quick mobilization and demobilization with minimum labour requirements
  • The pump delivery hose is positioned in place with the wet-end
  • The bulk of the pump unit remains clear of mining operations
  • Eliminates the need for Pump Crew to work in the pit near the Highwall
  • Access to water accumulating in a pit being developed by dragline operation is achieved without hindering the operation
  • Able to operate and be serviced in all weather conditions
  • Pump Capacity of 40L/sec @ 100m TDH

Water Pump

PumpHyd Driven - Single Stage End Suction Centrifugal. Stainless Steel Impeller.
SuctionFabricated screened suction - footvalve not fitted
Drive90cc fixed displacement axial piston motor
SpeedMax 2200 R/M
ArrangementMotor drives pump shaft through a coupling supported by tapered roller bearings in a sealed housing. Bearings lubed by case oil. Mechanical seal prevents leakage.
Pump PerformanceRated 40 L/s @ 100m head. Unworn pump, clean water.
Pump CurveNo 2400-1 calculated 05/01/95

Wetend Positioning Support

Wheels2 x 750 x 16” wheels fitted to 1550mm x 40mm axle are mounted across the wet-end, and assist in positioning the wet-end during lifting or lowering.
Support bracketHydraulically (ram) operated, acts as support for the wet-end during travelling, and hose positioning during lowering.

Water Conduit

Length / Type. of 140 O.D. Pn10. Special medium density polyethylene pipe.

Hose Reel

Size2000 f drum. 2500 f rim. 100m capacity when fully layered
Construction6-65x35x3 R.H.S spokes each side welded to hub flange and rim. 6-65x35x3 R.H.S. spokes rim to drum each side. 3mm M.S. plate on drum
Reel Method of SupportHydraulic Gland and Water Discharge Gland
Water Discharge150NB table 'E' flange, approx. 300mm of ground. 40NB Ball valve fitted.

Main Frame Type

Heavy skid base – fully weld fabricated unit construction comprised of UB side runners (with wear plate).  HeavyR.H.S. cross pieces, supporting the R.H.S. reel mounting frame and, fixed R.H.S extension. Heavy front tube with push pads, engine mounting, engine canopy, front bars for engine protection, fuel tank mountings, oil reservoir mountings, safety mesh mountings, and tow chain.

DimensionOverall – 10120mm x 2350mm x 3225mm
Ground contact 4650mm x 2159mm. Mainframe 5700 x 1900.
Dry Weight8.5 tonne
Skid Runners31O UB 46 fitted with 16mm Bisalloy 500.
Jib Extension65x65x3 B.H.S and bracing 50x50x3 S.H.S
Push Pads200x100x9 R.H.S capped w/-20 ms plate
Engine Mounting150x100x10 A.I.
Engine Canopy3mm flat mild steel
Towing Chains2-3 4m long of 20mm Hercalory with 260x140x38 tow-ring link

Hydraulic System

Hydraulic PumpVariable Displacement Piston Pump 100cc. Coupled to engine flywheel.
Operating Speed2000 R/M
Flow at Duty200 L/m
Max Pressure Rating280 bar.
Operating Pressure210 bar.
Main Relief Valve1" spike relief - cartridge type.
Auxiliary Control Valve4 Bank - operates lift/lower, slew, roller tilt, and pump support.
Reel DriveGeroler Motor driving through a reduction gear box - Hydraulic Brake
Final Drive 5:1 Chain Reduction.
Load Check ValveOver run protection on reel
High Pressure Hose System1"dia. Multi Spiral high pressure.
Return Line11/4"f. Double Braid low pressure.
Hoses-Auxiliary System½"f. Double Braid medium pressure.
Reservoir360L mild steel fabricated, fitted with oil outlet, oil return, filter breather, level temperature sight glass, high and low level oil protection, drain outlet.
Auxiliary Hyd Reservoir100Lts Auxiliary tank fitted to main frame, pumped into main reservoir via the hydraulic filters, and incorporating a 12v transfer pump.
Return Line Filter1¼" dual element cartridge type. Watchdog pressure gauge fitted
OilMineral Oil of ISO viscosity grade 22

Power Unit

EngineCummins 6BT 5.9. Turbo charged, 6cyl 87kW continuos
Electrical/Watchdog12V Electric’s, 2 work lights fitted, battery isolator fitted.Protection on engine oil pressure, radiator level, engine temperature, high and low levels of hydraulic oil, high and low hydraulic pressure. Shut down also on hydraulic filter pressure and pump suction ball valve position.
Fuel CellUnit construction with oil reservoir, 980Lts capacity with Wiggins fittings. Weld fabricated mild steel mounted across main frame between engine and reel support frame. Drain plug fitted. Sand blasted internally.
Fuel Lines10mm SWB hydraulic hose on supply line. 10mm LP hydraulic hose return line.
Fuel Consumption24L/hour @ 2000RPM

Painting

All frame work blasted to A.S. class 2½, primed and painted Interfine 629 White.

Functions

Engine at 1000RPM to 1200 RPMAuxiliary control valve functions. 4 functions - Wet-end lift/ lower
Roller Plate Slew for aligning the hose to reel during reclaim
Roller Plate traverse for assisting hose and wet-end entry to pit
Wet-End Support Bracket supports wet-end and guides hose on initial wall contact
Engine up to 2000 RPMOperation of pump function.

The foregoing specification is correct at time of publication however, LEGRA reserve the right to amend the specification as required in keeping with market development.

Booster Pump Options (Suits Booster Pumps Only)