Digger_E_ES.pdf

8/16/2019 Digger_E_ES.pdf

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DIGGER1000 / 1500 / 2000 /3000

SHIP UNLOADER


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Digger 1500

DIGGER


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DIGGER

A PERFECT CRANE SYSTEM FORHANDLING COAL AND RAW MATERIALS.THE DIGGER :

THE HIGH PERFORMANCE CRANE.

The steel and energy industry dailyrequire immense quantities of coal, oreand additives – all around the globe.These large volumes are transported

across the oceans and unloaded inthe ports of destination. The owners’requirements are therefore absolutelyclear: highly efficient unloading andshortest possible turnaround timesare decisive.

Cranes play a key role in this system.The crane functions must be assuredin all climates and they must delivermaximum handling rates.

Q INFO

What exactly characterises the best ship unloaders?What are the important factors?

Q The essential factors are:

– low operation costs – high performance – permanent availability

Q In detail it depends on:

– efficient and safe handling of coal and other bulk material – dynamic handling with maximum accelerations and speeds – high performance under continuous operating conditions during full shifts – minimum downtimes – low maintenance and operational costs

– high service life

The Digger with its pro ven two-trolley system is the guarantorof such peak performance.

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Material stock


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DIGGER

WITH THIS CRANE OURENGINEERS DEMONSTRATE AGAINAND AGAIN THE MEANING OF TECHNICALINTELLIGENCE. THE DIGGER.WITH THETWO-TROLLEY SYSTEM.

THE TECHNICAL CONCEPT.

auxiliary trolley

landside

hoisting drum

trolley driving winchclosing drum

waterside

quick-changerope connection

R2R3

R1

What are our engineers working on witha system proven over many decades?

They have the ambition of makingeach component more efficient, moredynamic while at the same time reduc-

ing maintenance costs even further.They thus set new standards, again andagain. The best example: the Digger.

Its technical strengths appear primarilyin the perfect interaction of main trolleyand auxiliary trolley via a pre-tensionedrope system. The use of automatic rope-adjusting devices and low-maintenancecomponents are a must and assureextremely high availability.

The constructional design is character-ised by the constant height of thegrab during trolley travelling. The partic-ular aspect: the hoisting mechanismsnever need to interfere as a compen-sating factor due to the reeving of thehoisting ropes via the auxiliary trolley.The controlled superposition of themovement, however, is always possible.

Rope slack of the trolley ropes is

unknown with the two-trolley systemand thus the slack of the holding andclosing ropes during lowering of the bulkgoods is minimised. In particular in thecase of very high waterside or landsideoutreaches and large gauges, the princi-pal advantage is totally decisive: theropes neither beat against each othernor against parts of the structure of theunloader – neither when closing thegrab nor when starting the hoistingprocedure. Rope-supporting trolleys arenot required.

In order to improve load paths, the hop-per is positioned as close as possible tothe ship.

As environmental protection is a veryimportant subject for us, a dust house ispart of the basic equipment. If required,we install water spray devices and filtersystems to almost completely avoid dust.

The rigid, very robust steel structure inbox girder design is also characteristicof the Digger: it is, on the one hand,characterised by extremely low mainten-ance costs and, on the other hand, per-fectly coordinated with the high dynamicmode of operation of the ship unloaders.

A particular aspect are the boomswith optimised stability executed as atwin girder. The trolley rails are arrangedabove the internal webs. In this case,too, we act with environmental protecti-on in mind: the rails are provided flexible

lining (thus sound emissions remainreduced to a minimum), these are alter-natively also welded directly onto theupper chord as a load-bearing member.

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Rope system with tensioning device

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Rope system with main and auxiliary trolleys

WS

4 ropes 2 ropesrope trolley grab trolley

4 ropes


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DIGGER

Q INFO

Typically Digger

– extremely efficient: pretensionedrope system with main andauxiliary trolley

– very low degree of wear: componentswith low maintenance costs

– particular environmental acceptance:dust house and trolley rails withflexible supports

– extremely stable: rigid, very robuststeel structure

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Bulk handling – 3 Diggers unloading ore

One further advantage of the twingirder booms: as a result of their design,the main and auxiliary trolleys runbetween the boom girders. This meansmaximum free space for the movementof the trolley and hoisting ropes.

The Digger is also held in high regard

because of its first-class electricalequipment. This equipment is designed,constructed and executed by a teamof Kocks engineers or in cooperationwith well-known suppliers of electricalequipment.

The latest methods of stress analysismeasuring values from the wind tunneland the intention to create an optimalcrane system give the Digger itsconcrete form. Apart from all Germanengineering rules, daily practical experi-ence also provides the inspiration forall further developments. Thus defor-mations under extreme conditions arenot accidental.

These have already been calculated duringthe projecting and design phase and takeninto account during dimensioning. Only arigid and less flexible structure is the solidbasis of a high capacity crane.

In summary, the Digger is ideal forefficient bulk handling. Its proven two-

trolley system and robust structureassure highest hourly rating with lowestmaintenance expense.

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Location of hopper next to vessel


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DIGGER

06 THE TROLLEYSAs performance-dominating cranecomponents of the Digger, the mainand auxiliary trolley are sophisticatedexamples of technical engineering.Thanks to the clever combinationof the box girder design and welded

profiles, the rope-drawn trolleys arevery light but also extremely robustlyexecuted. The pretensioned ropesystem assures very efficient inter-action.

The rope pulleys for deflection ofthe hoisting and closing ropes and thewheels are arranged in the trolleyon high-quality anti-friction bearingssupplied by European fabricators. High-

quality means above all: low degreeof wear and thus long service life.

The rope winches are also special parts:these are arranged in the central machi-nery house and assure optimal move-ment of the trolley and maximum accel-erations. Horizontal guide rollers leadthe wheels without flanges almostwear-free.

We can also supply the main trolleywith a grab-rotating device also permit-ting 90° rotations. Thus the grab canalso be used as a grab longitudinalto holding / closing ropes or as a grabwith the opening transverse to holding /closing ropes.

05 THE HOPPER AND HOPPERDISCHARGE UNIT

The hopper can receive a minimum ofthree grab fillings. In order to assureshortest distances and best load cycles,the hopper is arranged as close aspossible to the waterside in the lower

part of the gantry.

As the goods to be handled aredifferent with different requirements,the hopper is adapted exactly tothese requirements. This may be theinstallation of a wear-resistant coating,but also the installation of a specialdischarge unit (vibrating conveyor, beltconveyor, slat conveyor) in order totransport the goods perfectly either

onto the quay-based belt conveyor ordirectly onto a landside dump.

In order to protect the hopper againstoverfilling and the unloader againstoverload, the same is arranged on loadcells. These avoid further filling whenthe limit values are exceeded. It goeswithout saying that the complete dis-charge area is provided with walkwaysand platforms for maintenance purposes.

In order to avoid dust emissions, a dusthouse is part of the basic equipment ofthe hopper. The consistent use of spray-ing devices, suction and filter systemscan reduce the dust burden on the envi-ronment to an absolute minimum.

O Hopper outlets O Main and auxiliary trolley on twin girder boom

07 THE CENTRAL MACHINERY HOUSEThe central machinery house is arrangedwithin the gantry structure and is char-acterised by its clear layout and easeof maintenance. The holding and closing

winches are installed in this houseas well as the boom hoist winch and –in a separate area – the transformer.

A maintenance crane, which can travelover the complete surface, assuresoptimal access to all components: a deci-sive advantage in case of maintenanceof all drive mechanisms. In this regard thehoisting height provides an extremelyhigh degree of flexibility: all componentscan be lowered to the ground withoutcausing any danger.

The house is pressure-ventilated.Dust and fine particles are not a matterfor discussion thanks to an efficientfilter system.

o Maintenace hoist inside of machinery house


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DIGGER

08 THE HOLDING AND CLOSINGMECHANISM

Both winches of the holding and closingmechanism are arranged in the centralmachinery house in the gantry. Thesecomponents have tasks of fundamentalimportance: the holding mechanism

holds the grab during closing – alwayscompletely controlled. The closingmechanism also participates 50/50regarding the load distribution. Bothare responsible for hoisting and loweringof the grab, but also for holding duringtrolley travelling.

A Digger speciality are the rope drumsof the winches: these are provided withrope stores, keeping one additional

reserve length of holding and closingrope. The ropes can thus be re-adjustedrepeatedly, an important advantage incase of premature wear (either due tothe close position to the grab heador due to contact with the edge of thehatch, cracking-off the rope socketor rope connections).The service life ofthe ropes until they are discarded isthus extended repeatedly.

09 THE BOOM HOIST MECHANISMAssuring maximum safety for all cranecomponents is a core value of Kocks.This applies in particular to the hoistingwinch. This winch is arranged in thespacious central machinery house withinthe gantry and is equipped with asafety brake as well as an emergencydrive. Thus the boom can be keptsafe even in case of excessive speedor failure of the drive. The emergencydrive assures safe movement into theend position.

10 THE CRANE TRAVELMECHANISMS

We also set standards with regard to

the crane travel mechanisms. Thewheels are arranged in a bogie equal-ising system and are driven either assingle wheels or in pairs. Either assupport of the wheels or in gearboxes:anti-friction bearings from Europeansuppliers are a must.

In case of endangered areas, wehave developed floodable travel mecha-nisms – or, where necessary, alsocurveable trucks, thus assuring curvingup to 90 degrees.

11 DRIVER’S CABINThe cabin of the panoramic view typeprovides much comfort and a full rangeof visibility. The cabin is uncoupled fromthe trolley via a separate movable frameequipped with a travel drive mechanism.The cabin carriage is moved on a profile

welded at the lower side of a boomgirder equipped with a friction wheel driveor toothed bar drive, in accordancewith the requirements.

The elements and indication devicesrequired for operation are designedcarefully and arranged meticulously inaccordance with ergonomic aspects.In this cabin, the crane driver has every-thing under control.

In order to avoid the penetration of dust,the cabin is ventilated via a filter system.A comfortable air-conditioning unit isalso available which is part of the stan-dard equipment of the Digger.

12 THE ELECTRICAL EQUIPMENTThe freely programmable electricalcontrol, too, is state-of-the-art technicalengineering. It is based on approvedindustry components communicating viabus systems with the digital three-phasefrequency converters.

Anti-sway guiding of the hoist load oroptimised hoist load guiding can be real-ised for optimal operating conditions.Semi-automatic or fully automatic opera-tion assures continuously high handlingrates during long periods of operation.

The communication of the devices is

assured in accordance with the usualindustrial standards by IndustrialEthernet, profibus or CANbus, to a largeextent via LWL connections.

o Arrangement of hoisting and closing winchinside of machinery room

O Boom hoist system with safety band brake O Total view to control the load

O Drivers seat inside of cabin with ergonomicalarrangement of instruments

O Workplace place for engineers


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DIGGER

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Efficient bulk handling


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DIGGER

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Unloading directly to material stock


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DIGGER

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Stability and rigidity of the gantry structure is the basis of high performance of the Digger


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DIGGER

WHY KOCKS?

CRANE CONSTRUCTION SINCE 1872.THE COMPANY KOCKS.

Q KNOW HOWKocks has developed high-performanceship unloaders since 1913. We are con-

sidered pioneers in the development ofcontainer cranes in Europe – and we areleaders on the world market in the fieldof Goliath cranes. Kocks sets standardsfor the high performance of cranes.

Our engineers consistently apply theapproved regulations of German engineer-ing when continuously developing anddesigning cranes. Designing and classifi-cation for continuous operation is carriedout particularly conscientiously.

The goal always remains the same: increas-ed efficiency, safety and environmentalfriendliness of the cranes.

Q QUALITYTo us quality means: a sophisticatedproduct concept, profound know-how inthe fields of design and control as wellas the greatest accuracy with regard tofabrication and execution. It goes with-

out saying that our engineers test andcheck all mechanical and electricalcomponents meticulously.

This provides decisive advantages:– maximum efficiency and reliability

of the cranes– low operational costs– long service life (even under the

toughest operating conditions).

Q SERVICEPerfect maintenance is part of a goodproduct for us. We therefore train the

personnel of our customers intenselyin the fields of crane theory and cranepractice. We want to assure thatcontinuous availability of the cranesis guaranteed.

If a failure should occur in spite ofeverything, we assist quickly and in aflexible and unbureaucratic way.Around the clock.

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Home of Kocks Krane in Bremen

Q PARTNER APPROACHThe Digger is an extremely durableproduct. The decision in favour of the

Digger means the start of a compre-hensive relationship between customerand supplier, which is evident from themany repeat and follow-up orders.

We therefore attach great importance toensuring that this relationship is fair andwith long-term benefits for both sides.For us this starts long before the signingof contract. We will be pleased to adviseyou, simply give us a call.


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DIGGER

AN OVERVIEW OF THE DIGGER.THE DIGGER – THE ESSENTIALTECHNICAL DATA.

DIGGER 1000

DIGGER 1500

Q Capacity at the ropes 20–25tQ Hopper content 50tQ Operating speeds

Hoisting/Closing 120m /minLowering/Opening 150m/minTrolley travelling 200m/min

Q Gantry travelling 25m/minQ Size of vessel (on average) 70,000 DWT

Q Nominal capacity (Free Digging)Coal 1,000t /hOre 1,100t/h

Q Capacity at the ropes 30– 35tQ Hopper content 70 tQ Operating speeds

Hoisting/Closing 120m/minLowering/Opening 150m/minTrolley travelling 200m/min

Q Gantry travelling 30m /minQ Size of vessel (on average) 120,000 DWT



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DIGGER

AN OVERVIEW OF THE DIGGER.

DIGGER 2000

DIGGER 3000

Q Capacity at the ropes 40– 45tQ Hopper content 95tQ Operating speeds

Hoisting/Closing 150m /minLowering/Opening 180m/minTrolley travelling 240m/min



Q Capacity at the ropes 60– 65tQ Hopper content 140tQ Operating speeds

Hoisting/Closing 150 m/minLowering/Opening 180m/minTrolley travelling 240m/min


Q Nominal capacity (Free Digging)Coal 3,000 t /hOre 3,300 t /h


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Kranunion is an association of three crane manufacturers

specialised in hoisting and transporting heavy loads.

KIROW is the world market leader for railway cranesand slag pot carriers

ARDELT is the world market leader for double jib levelluffing cranes

KOCKS is the world market leader for Goliath cranes

Central to all Kranunion products are the technical designconcepts created by our experts. Of course, we continue tooptimise those fundamental concepts even further in theinterests of our customers. Kranunion products are thereforebased on practical requirements and are a symbiosis oftradition and innovation combining the tried and tested withthe new.

Customers who choose Kranunion choose great Germanengineering skill: for environmentally-friendly and safe, moderntechnology, for low operating costs, for high performance andreliability.

DIGGER

KRANUNION.

WORLD MARKET LEADERSUNITED.

KOCKSWESERSTRASSE 6428757 BREMEN /GERMANY

PHONE +49 (0)421 66.01 0FAX +49 (0)421 66.01 400E-MAIL [email protected]

WWW KOCKSKRANE.DE

KOCKS IS A MEMBER OF KRANUNION.

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