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WALKAROUNDby
Maximum operating weight 15 tonsNet power 88 kWMaximum speed 33 km/h
dicembre 2012 Costruzioni 3
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december 2012 Costruzioni 5
WALKAROUNDby
Four machines in one. Designed to workas an excavator, loader, pipe-layer and pick and carry lifter.
The Active Control hydraulic systemis the best available on the market. It is a pressure compensated, closedcentre system with flow sharing distributorand full load sensing regulation.
The exclusive jib invented by Mecalac is very effective in confined spaces.Standard: offset and quick coupling.
It is the most compact 15 t maximumweight wheeled machine, without offset,in its class. Rear overhang: 1,600 mm.
The two axles have as standard a differential with slip limited to 45% to ensure maximum traction at all times.
With the optional 4 wheel steering, thewheels’ turning radius is only 4,440 mm.
With a symmetrical body, the operator canwork in excavator mode both on the bladeand on the stabilizers side.
Exclusive automatic function for groundlevelling with synchronised operation of the jib cylinders.
Steel structure, cylinders and swivel jointsmanufactured in-house by the controlledcompany Hydromo. Direct quality processes.
Each part is painted by electrolysis (immersion)or an electrostatic chemical process.
The 714 MWe is an exclusive machinewhose principal characteristic is its versatility.
The kinematics favours working alongside the machine.
PLUS
MEC
ALA
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MW
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6 Costruzioni december 2012
4 machines in one
WHEELED EXCAVATOR In this configuration the 714 MWe works as a classical 15 tmaximum weight wheeled excavator, but it distinguishes itself by its jib with standardoffset (flush and offset excavation, etc.), the ultra compact turret (rear overhang 1,600mm) and the optional 4 wheel steering. Twin 10.00-20 wheels are available.
PIPE-LAYER The 714 MWe can be personalised according to operational needs. If liftingis required, both blade and stabilizers can be requested. The jib can be equipped with safety valves on all the cylinders (optional)and quick hydraulic couplingwith a lifting hook. The machine is also quick in pick-and-carry operations.
EXCAVATOR BREAKOUT FORCE 8,400 DANPENETRATION FORCE 6,200 DAN
Curved windscreenfor optimum
visibility
december 2012 Costruzioni 7
compact efficiency
HANDLER By fitting the forks, pallets can be
unloaded for site work upto 7.3 m high, but also 3.2
m below ground level. Inthis way the performance
and operating area aresuperior to those of a skid
steer loader.
FRONT LOADER The Mecalac jib is also designed to carry loaderbuckets. The exclusive thrust ram on the penetrator (see photo) givesmaximum controllability and permitsunloading to heights of over 7 m.For example, it is possible to loadmaterial in a heap onto a truck or unload it, “dosing” aggregate and moving along for filling trenches.
LOADER RIPPING FORCE 5,200 DAN
MEC
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8 Costruzioni december 2012
Symmetry and 4WS
3,600 mm
5,81
0 m
m
THE MOST COMPACT AND AGILE15 T MACHINEThe turret, with a rearoverhang of only 1,600 mm,and the special Mecalac jibpermit a minimum radius of rotation of 3,500 mm whichincreases to 3,600 (see diagrams) when thestabilizers are on the ground.4 wheel steering (4WS),available on request, reducesthe steering radius by 40%:from 7,360 mm to 4,440. With4WS there are also 3methods of steering: frontaxle, both axles concentric or unidirectional (crabbing).
The Mecalac 714 MWe is not merely a wheeled excavator, but a versatilemachine, designed to provide high performance in many applications in situations that would be prohibitive for other machines of a similar type.The perfect symmetry of the chassis is synonymous with versatility.
PARALLEL AND ANTI-DROP
To enable fullpersonalisation, the blade
is on request and twoblades can also be fitted(without stabilizers). The
trapezoidal lever system ofthe blade enables it to be
lowered with precisionkeeping the right
inclination, while the liftingcylinders have safety
valves.
Stabilizers(optional) withindependent
activation andhinged support
plates.
2,450 mm
470
mm
HALOGENHEADLAMPSStandard fittingincludesheadlamps for driving on the roadand 1 workinglight on thecabin. 2additionalheadlamps are available.
4,440 mm
4WSwith 3 methodsof steering on
request
Unique jib 1
2
3
COMPACT KINEMATICS Ideal for workingin the narrowest streets of towncentres, in tunnels, and when layingpipes very close to the machine.
VERSATILE The design of the jib hasbeen perfected over more than 35years to optimise operation with a bucket, loader and forks.
SAFE The jib cylinders are fitted withsafety valves (4 valves on request) and the quick coupler has a patentedhydraulic lock
JIB RETRACTION WITH 2OFFSET CYLINDERS
The patented Mecalacequipment is characterised
by a double cylinder forretraction of the main jib.This enhances the liftingperformance in the areaclosest to the machine.
NOT ONLY OFFSETThe jib is the characteristicfeature of all Mecalacmodels. Here, at the side, is a first series 714 MW in a working position thatshows the distribution of the load with respect to the external stabilisationpoint. When working veryclose to the machine, the weight of the jib (greenline) increases stability.
Safety valves are available for the 5 jib
cylinders
Offset hinging of thestandard jib
Offset, 1 hydraulic line andstandard quick coupling
Offset hinging at thebase of the jib
Simultaneous actionof the lifting
cylinders and penetrator for
ground levelling
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160 MPA COMMON RAIL INJECTIONThe DCR injection is common rail and worksup to a pressure of 160 MPa supplied by a radial piston pump. This technologyrequires the use of a low sulphur fuel,complying with standard DIN EN590.Furthermore, the Deutz unit is managedelectronically by a (EMR 3) control unitmounted in the cabin, away from hightemperatures, vibration and humidity.
The side-mounted engine permits a very compact turret. The 4 cylinder turbo diesel is a 4 litre Deutz giving 88 kW maximum power at 2,100 r.p.m. and a maximum torque of 495 Nm at 1,600 r.p.m.
Thermal insulation of compartments
Engine oil temperaturesensor
Temperature controlledhydrostatic fan (twin sensor)
German reliability
500 HOUR OIL CHANGEThe heat exchanger
fitted on the right side ofthe engine crankcase
permits engine oilchanges at intervals of
500 hours.
Turbo with wastegate(no pressure peaks
or over-revving)
Twin cartridgeair filter
Compressed air pressure sensor
Double ram anddouble opening
position
Air filter clogging sensor
(signal in cabin)
Common railinjection
(160 MPa)
Engine oilheat
exchanger
Radial piston rotary injection
pump
december 2012 Costruzioni 11
Temperature-controlled fan
SIGNAL IN CABIN The remote fuelfilter detects the presence of waterand sends a signal to the operator. It has a drain valve and priming pump.
OPENABLE CONDENSERThe air conditioning condenser has a hinged opening allowing to removeeasily impurities such as pollen,leaves, etc. from the radiators.
POWERFUL STARTINGThe starter motor has fully
4 kW of power to start a 4 litre engine. The ratio of 1
kW of starting power per litreof cylinder capacity is
excellent.
COOLS WHEN NECESSARY The cooling fan is hydrostatic and adjusts its speed according tothe temperature of the engine coolant and hydraulicoil. In this way the engine quickly reaches itsoptimum working temperature and the fan onlyconsumes power when necessary. This reduces fuel consumption and noise.
Working engine speeds• 1,500 R.P.M. There is only one enginemapping. With the Eco function on,the maximum speed is limited to 1,500 r.p.m (the hydraulic management also changes).
• 1,800 R.P.M. This is the standard speed in the “Site” operating mode.
• 2,100 R.P.M. This is the maximum speed only reached in the“Road” mode and enables 33 km/h to be reached.
Openable airconditioning condenser
3 separate modular radiators
Hydraulic oilradiator
Radiators fixed at the bottom only and on flexible mounts (free
to expand and therefore reliable)
Engine waterradiator
Turbo intercooler
MEC
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RELIABLEPLANT
The hydraulic oilreservoir (140
litres) is placedhigher than the
pumps toprotect them
from cavitation.The oil change
interval is 1,500hours.
“ACTIVE CONTROL” PLANTThe 714 MWe hydraulic
system uses a closed centre,pressure compensated, flowsharing distributor, with full
load sensing control. Theprimary pump (on the side,
connected to the crankshaftby a flexible coupling) is
variable flow with electroniccontrol: essentially, the plate
that adjusts the cubic capacitychanges its inclination
according to the engine load (anoptical sensor measures engine
speed in real time).In addition to the primary pump which
supplies the hydrostatic transmission andworking tools, there are two constant flow pumps for
controls, brakes and cooling fan.
FOR THE BEST PERFORMANCE OVER TIMEThe hydraulic system works at a maximum pressure of 35 MPa and reaches a maximumflow rate of 205 litres/min. The sophisticated hydraulics, with electronic control, alwaysmakes use of all the effective power of the engine thanks to the anti-stall.
• FULL LOAD SENSING
• PRESSURE COMPENSATED CLOSED
CENTRE SYSTEM
• FLOW SHARING TECHNOLOGY
• VARIABLE FLOW ELECTRONICALLY
CONTROLLED PUMPP
LUS
Top hydraulics
Engine-driven variable flow primary pump
Flow sharingdistributor
Lubrication distributor. An automatic centralisedsystem is available.
Secondaryfuel filters
VERSATILITY AND SAFETYThe +/- 8° oscillating front axle
has a safety valve on both jacks.The operator can select functionA which activates the lock whenbraking on the road. In the 4WSversion, there is also a steering
mode selector.
SUPERSIZED TECHNOLOGY Both the Dana Spicer axleshave a differential with slip limited to 45% to ensure
high traction even in case of loss of grip. Thistechnology is typical of the larger wheeled shovels.
THREE METHODS OF STEERING (IN THE 4WS VERSION)AND OSCILLATING AXLE WITH AUTOMATIC ENGAGEMENT
Slip limited to 45%
HYDROSTATIC TRANSMISSION The Rexroth hydraulicmotor with a maximum displacement of 107 cm3
is coupled to a two-speed ZF powershift gearbox thatcan transmit up to 770 Nm of torque. With electronicmanagement, three speeds (snail, turtle, hare) and cruisecontrol in the “road” and “site” modes are obtained.
WALKAROUNDby
Parking brake built intothe gearbox
ZF HL 270 powershift gearbox with 2 speeds selectable in motion.
Rexroth hydrostatictransmission motor
with electronic control
Electronic transmissionmotor sensor
MEC
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The turret architecture with lateral motor has enabled a spacious cabin to be built. Accessibility is by means of an exclusive sliding door of optimum construction (pressed).Note the double-jointed, telescopic steering column.
RADIO WITH USB The radio, withremote controls near the left control
handle, is standard. It has a jacksocket, USB and is compatible
with MP3 files.
FUNCTIONAL QUALITYThe bottom of the cabin
is covered witha thermoformed plastic
carpet that facilitatescleaning.
ROPS - FOPSCERTIFIED CABIN
Intuitive slidingdoor unlocking
Double adjustmentslides
Pneumatic suspension
and heated seatavailable
Seat belt withautomatic
winder
Plenty of space
CABIN There is no shortage of space on board the Mecalac 714 MWe. The internal height of the cabin is 1,600mm, width 980 mm and length 1,850
mm. The Rops Fops certified structureis in boxed steel joined by robotisedwelding. Note that an upper protectivegrille is available and it raises the Fopscertification to level II.
WALKAROUNDby
EVERYTHING IS INTUITIVE Among the close at handcontrols, note the automatic return to minimumengine speed , the speed control ,the proportional control of the tool and the onefor control of the blade and stabilizers .
THE DOOR of the Mecalac
714MWecombines
slidingopening with
door leafclosing.
This exclusivesystem wasdesigned to
give noalignment
problems overtime.
The door isproduced from
two steelpressings
sandwichedtogether.
Thewindscreen is
bonded andequipped with
a slidingopening.
Safe and comfortable
EXCLUSIVE-45% OPENINGAREA
The 60/40 windscreenopens very easilythanks to a clever system of hinges.
It remains well awayfrom the operator’s
head and the steering.The double-jointed telescopic steering columnimproves operator visibility for close working.
2
3
1
12 V socket
Removable rubbercarpet
Nozzles individuallyconnected to the air conditioning
(efficiency)
17 litre cooled and removable compartment
(cleanliness - hygiene)
Simultaneous operationof jib and penetrator
Touch controls for the air
conditioning (optional)
22
4
1 23
4
MEC
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THE LCD MONITOR varies in brightness according to the external light: in the three screenshots above it is day time, while in the ones below the sun has set. Above centre, shows the engine speed in Eco-Mode.Below, shows the control of the joystick functions, intermediate boom locking and excavator functions.
P
C
S
PARKING The hydraulic motordoes not transmit motion and the joysticks are not active.
SITE All the power is availablefor the tool. While moving, the front axle, if in automaticmode, is locked when braking.
ROAD The side lights areswitched on and the “cruisecontrol” speed regulator can be activated.
3 operating modes
3 SPEEDS By selecting “snail” the acceleratoradjusts the speed from 0 to 3 km/h in first gearwith fixed hydraulic flow. In “turtle” mode it stays in first gear, but the hydraulic flow is variable and the speed can reach 8.5 km/h. By selecting “hare” the speed reaches 33 km/h in second gear with the hydraulic motor unlimited.
ECO-MODEIn addition to
limiting the enginespeed to about
1,500 r.p.m., theEco Mode function
operates on thehydraulic controls to
reduce fuelconsumption without
decreasing theworking power.
ECO-MODEBUTTON
Operates on thehydraulics and
engine.
Operating mode
Potentiometricaccelerator
Speed
WALKAROUNDby
Quality and carein manufacturing
Details that matter
HYDROMO TECHNOLOGY The Mecalac Hydromo production unitspecialises in plasma cutting (using a double torch, the machine cuts plates up to 30 mm thick) and robotised steelwelding, manufacturing of rotating hydraulic joints and weldingof the heads to the jack stems. Concerning this, the methodused permits welding of about 85% of the section of the stemto the head. The welding alignment and quality are checkedultrasonically for each cylinder produced. Destructive tests are carried out on samples.
STANDARD AND GUARANTEEDBY THE MANUFACTURER
The quick coupling designedand manufactured by Mecalachas automatic take-up of play.
The tools use 4 mechanicalwedges and a plate for the
hydraulic lock. Mecalac offersvarious buckets, forks and also aripper tooth. A kit is available to
adapt other tools. Rememberthat the hydraulic line is
supplied as standard: a flow rateof 180 l/min and a pressure set
to 18 MPa as standard.
Left tool-carrier compartment (right optional) Cabin roof that channels water
Sound-absorbing components withlong-life stud fixings
Non-slip aluminium footplate
Safety valve on the oscillating axle
THE PANELS AREALL NUMBEREDA sign of qualityfor the fibreglasspanels that are made in France.
Welding on 85% of the mating surface
4 ISO 15818 hooks for transportation
Sacrificial flat plate removed:giving the best ground finish
Welded sacrificial flat plate to obtain a uniform fillet weld
MEC
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www.mecalac.com
SEE THE VIDEO DEDICATEDTO THE MECALAC
714 MWE EXCAVATOR
Simple MaintenanceMecalac 714 MWe SpecificationsVersionMaximum operating weight (triple)Lifting capacity at 360°,on the ground and at a distance ofNet powerDeutz EngineCubic CapacityCylindersBore x strokeCalibration speedPiston speedValves per cylinderDistributionInjectionInjection stagesEGRExhaust gas treatmentFuel supplyPumpsFlow ratePump regulationSlide valve distributorPressure (max)Travelling speedTurret rotation speedWheelbaseMachine widthJib Depth of excavation (excavator)Depth of excavation on plinth (excav.)Distance of excavation on the ground (excav.)Ripping force at the bucket (excav.)Ripping force at the bucket (loader)Penetration force (excav.)Rear turret overhangTurret widthTyre width std. (twin)Tyres (twin)Jib/cab heightBatteryAlternatorFuel tankSystem/hydraulic reservoir
714MWe15 t2,300 kg4.5 m (no bucket)88 kWTCD2012L04 2V4.04 litres4101 x 126 mm2,100 r.p.m.8.82 m/s2conv.CR3yes (internal)noafter turbovariable flow205 l/minLS positivec. c. press. comp.35 MPa33 km/h10 m/s2,450 mm2,500 mmtriple-offset4,600 mm2,900 mm8,200 mm8,400 daN5,200 daN6,200 daN1,600 mm2,400 mm2,390 (2,505) mm18-19.5 (10-20)3,790/3,140 mm2 x 110 Ah55 A150 litresn. d./140 litres
• ENGINE OIL CHANGE 500 hours • HYDRAULIC OIL CHANGE 1,500 hours • COOLANT CHANGE 3,000 hours • ROTATION OIL CHANGE 1,000 hours
ACCESSIBILITY The mechanical parts areaccessible, in spite of the very compactturret, thanks to the laterally mountedengine and the generous fibreglass enginehoods with assisted opening and keylocking. The main maintenance intervals aregiven below:
150 LITRE PLASTIC FUEL TANK. The fuel filler of theplastic fuel tank (no corrosion or condensation) can be reached from the rear compartment. An electricpump is also available for refuelling with automaticprevention of overfilling. Well designed, the system for protecting the fuel filler from impurities is fittedwith a grille.
Casa Editrice la fiaccola srl - 20123 Milano - www.fiaccola.comExtract from the review Costruzioni - December 2012 - pages 18-34