TRIPLE DECK DOUBLESCREEN FEATURES & BENEFITS Rev 1 09-01-15
Feed hopper Tipping grid Screenbox Main conveyor Engine Tracks Dimensions Standard features Options Benefits overview 2
FEED CONVEYOR 1200mm / 47 wide feed belt with heavy duty feeder drive system (hydraulic driven, wheel drive gearbox) Variable belt speed, maximum belt speed 12% faster than the previous QA450 model for increased throughput (application specific) Internally guarded feeder conveyor Quick access panels for tail drum bearing access 3
FEED HOPPER Hopper level capacity of 7.5m³ / 9.8m³ and heaped capacity of 11.33m³ / 14.8yd³ Strengthened hopper bin side plates Viewing windows on rear door for belt tracking Access panel in feed hopper for viewing gearbox oil level sight glass 4
TIPPING GRID Wear resistant grid bars Three identical cassettes with free swinging fingers for easy maintenance & repair. The grid area measures: 4010 x 2200mm / 13 2 x 7 2 (wings lowered) 4735 x 2200mm / 15 6 x 7 2 (wings raised) Radio remote control tipping grid fitted as standard. Can be used to raise, lower & cycle grid, timed cycle is adjustable Tip angle 96 5
MAIN CONVEYOR 1000mm / 39 wide main conveyor with high rise walls to stop spillage even when running at high capacities Main conveyor raise / lower facility to aid screen box access, maintenance and mesh changes Flashing beacon and siren for pre-start warnings 6
SCREENBOX 6096 x 1524mm / 20 x 5 (equilivent) triple deck patented Doublescreen box Two independent screen boxes, each with separate drives Unique steep angled primary screen and shallower angled secondary screen allow for massive throughput, excellent separation & accurate grading. Uniquely high G6.17, with a 1200rpm shaft speed and over 7.5mm throw 7
SCREENBOX DIMENSIONS Primary Screen Top Deck: 3048x1524mm / 10'x5' Middle Deck: 3048x1524mm / 10'x5' Bottom Deck: 3048x1524mm / 10'x5' Secondary Screen Top Deck: 3048x1524mm / 10'x5' Middle Deck 3048x1524mm / 10'x5' Bottom deck 2439x1524mm / 8'x5' 8
DOUBLESCREEN PRINCIPAL First screen box is used as a fines extractor Clean gradings, at very high output, are produced as material is exposed to a very large screening area Second box operates as a grader The majority of the undersize is removed during initial impact 9
SCREENBOX Sealing strips prevent leakage on middle & bottom decks Improved screen sealing between the Doublescreen boxes All screen media remains interchangeable with QA450 for continuity 10
MESH TENSIONING SYSTEM All screen decks feature end tensioned mesh panels Each screen deck features quick tensioning ratchets for fast screen mesh tensioning and removal Each screen box is mounted independently from the chassis on a set of springs 11
SCREEN MESH OPTIONS Square mesh Elongated S-Harp/Diamond Piano wire / harp 12
THREE SIDED WALKWAY Three-sided walkway with rigid access ladder: Improved access for screen maintenance Screen drives relocated for improved access Side sections hydraulically fold for transport Sprung walkway gates Rear sections folds up to maintain transport length 13
OVERSIZE (4TH) CONVEYOR New hydraulic folding oversize conveyor Belt width 650mm / 26 Hydraulic raise / lower (infinite positions, no pinning) Hydraulic slew functions, (64 of rotation from hopper) Belt speed increased +23% to aid material extraction, hydraulic pumps changed to provide greater oil flow 14
OVERSIZE (4TH) CONVEYOR Conveyor lengthened, better suited for closed circuit formation Oversize chute work 40% larger cross section area than previous QA450 No need for a crane on site Reduced mobilisation times between sites. Compatible with optional vibrating grid 15
MID-OVERS SIDE CONVEYOR 700mm / 28 wide belt Discharge height of 5112mm / 16 9 Removable conveyor flairs stowed in chassis under fines conveyor Viewing windows on tail drum guarding for belt alignment 16
MID-FINES SIDE CONVEYOR 700mm / 28 wide belt Discharge height of 4915mm / 16 9 Folds alongside screen during transport Removable conveyor flairs & transport bracket stowed in chassis Viewing windows on tail drum guarding for belt alignment 17
FINES CONVEYOR 1200mm / 47 wide belt Discharge height of 5030mm / 16 6 External guarding updated with profiled windows 18
CONTROL SYSTEM User friendly electrical control system for ease of operation: Colour coded numerical push button functions Improved graphics through visual display unit Select operation mode using one simple switch Choose set-up, operation or tracking modes One-touch sequential auto start / stop facility Fully compliant with current safety regulations 19
CONTROL SYSTEM To ensure compliance with the latest regulations the QA451 is equipped with prestart warnings on all plant functions, including audible alarm and flashing beacon. Hydraulic oil cooler fitted as standard. Temperature is controlled for more efficient use of power. Fail safe engine coolant level sensor fitted for added security and protection 20
ENGINE Powered by CAT C4.4 mechanical engine Developing 74.5kW / 100hp at 2200rpm The engine complies with the Stage 3A / Tier III emission laws Delivers excellent fuel economy with an average consumption of only 10-14 L/H / 2.5-3.5 US Gal/H Easy access for maintenance via large canopy doors 21
HYDRAULIC TANK 370 litre / 98 US Gal hydraulic tank Multi stage filtration system to ensure all debris is removed on every cycle Filters located at the top of the unit for ease of maintenance Level gauge with in built temperature gauge 22
FUEL TANK 290 litre / 76.5 US Gal diesel tank. Optical diesel level gauge Heavy duty industrial size lockable filler cap 23
CHASSIS Updated chassis with additional brackets for the 4th conveyor Aluminium machined return line manifolds Additional pull stop cords added to chassis Protection plates over the hydraulic control levers 24
TRACKS Hydraulically driven crawler track mounted for full site mobility. The full power of the engine is available for driving the tracks when needed Length of 3800mm / 12 5 Track shoe width 500mm / 20 25
TRACKING Tracking is possible by either: Wired umbilical Wireless radio controller Wired umbilical now features Can bus technology 26
TRANSPORT DIMENSIONS Transport length 18,370mm / 60 3 Transport width 3,200mm / 10 6 Transport height 3,550mm / 11 8 Standard weight 34,000kg / 74,958lbs 27
TRANSPORT DRAWINGS 28
WORKING DIMENSIONS Working length 18,802mm / 61 8 Working width 17,852mm / 58 7 Working height 6,480mm / 21.3 Standard weight 34,000kg / 74,958lbs 29
WORKING DRAWINGS 30
WORKING DRAWINGS 31
NOISE EMISSIONS 32
STANDARD FEATURES Large capacity feed hopper Hydraulic tipping grid 128mm / 5 spacing 1200mm / 3' 9 wide variable speed feed conveyor 1000mm / 3' 3 wide main conveyor Hydraulic raise/lower facility on main conveyor 3048 x 1524mm / 20 x 5 triple deck Doublescreen Manual screen tensioning Four hydraulic folding discharge conveyors Hydraulic folding walkways Hydraulic drive oil cooler CAT C4.4 engine 500mm / 19½ wide tracks Colour-coded push button control panel with sequential start up Radio controlled tracking Hydraulic levelling legs on hopper & rear of tracks 33
AVAILABLE OPTIONS Wear resistant liners in hopper, side conveyor feed boots & on spreader plate Lighting mast Remote diesel pump Canvas covers and brackets only (all conveyors - main, sides, fines & 4th) Dust suppression spray bars complete with hosing Water pump (hydraulic) including spray bars 13ft tipping grid & crusher feed box Arctic package -20 C Arctic package -30 C Central autolube System Tail conveyor canvas covers only Vibrating grid wing extensions Double deck vibrating grid (127mm spacing) Crusher feed box to fit with vibrating grid Pull stop cords on the fines, midgrade & oversize conveyors 34
OPTIONAL VIBRATING GRID Standard aperture 125mm / 5 spacing Target area with extensions fitted measures; 9.68m² / 2.2 x 4.4m 104ft² / 7 2 x 13 9 Radio remote control to raise / lower & cycle the tipping grid, timed cycle is adjustable Vibrating grid tip angle 34 35
BENEFITS OVERVIEW The world s only triple deck patented Doublescreen (two inline three-deck 10' x 5 screen boxes) capable of producing large volumes of high spec. product First screen performs as a fines extractor, second screen performs as a grader Ability to reverse the throw on each of the screen boxes to maximise screening efficiency Oversize conveyor featuring hydraulic raise / lower and hydraulic slew functions Four hydraulically folding stockpile conveyors for quick set-up User friendly control panel with sequential start-up 36
SANDVIKMOBILES.COM 37