Mechanical developments for a zero emission of lubricants

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Case d’Artagnan

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Case d’Artagnan

CONTRACT SPECIFICATION

O30 GREASING SYTEMS

The mechanical components of the dredging system are designed for

functioning without or with reduced continuous greasing.

Greasing points, where regular or continuous greasing is required, are

connected to a central automatic 2-line greasing system.

If the grease flow is important, used grease will be led to a collecting

point for removal, if necessary with piping.

20032003

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Challenge“Force back the grease consumption of dredging equipment on

board of CSD d’Artagnan by mechanical re-engineering”

100 to 300 kg/wk = 160.000 to 500.000 liter / dredger life timeRANKING OIL SPILL CATASTROPHES ?

<<Foto van vettige dekmachinerie>>

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The logical first The logical first

stepstep……

Intermediate Intermediate

bearings of the bearings of the

cutter shaftcutter shaft

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New application of a known bearing arrangement

dd’’ArtagArtag

nannan

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Thordon Composite

dd’’ArtagArtag

nannan

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<<foto spud carrier op wielen>>

Inevitable second stepInevitable second step……

Spud carrier systemSpud carrier system

Common system on wheels

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The spud carrier of The spud carrier of

dd’’ArtagnanArtagnan travels on travels on

synthetic sliding padssynthetic sliding pads

Synthetic sliding pads

dd’’ArtagArtag

nannan

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Frictional resistance is Frictional resistance is

reduced by a reduced by a

biodegradable greasebiodegradable grease

Spud carrier on a sliding frame

dd’’ArtagArtag

nannan

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Logical sequenceLogical sequence……

The swivel bendThe swivel bend

Old design of the swivel bend

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Swivel bend

dd’’ArtagArtag

nannan

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Swivel bend

dd’’ArtagArtag

nannan

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Barge loading system

dd’’ArtagArtag

nannan

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Anchor boom pivots: maintenance free spherical plain bearings

Other hinged Other hinged

connectionsconnections

dd’’ArtagArtag

nannan

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Anchor boom pivots: maintenance free spherical plain bearing

Anchor boom Anchor boom

pivotspivots

dd’’ArtagArtag

nannan

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Old design on the continuous grease system

Ladder Ladder trunniontrunnion::

Old designOld design

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Ladder trunnion bearing arrangement: greased but with care

Ladder Ladder trunniontrunnion

dd’’ArtagnanArtagnan: :

non maintenance free non maintenance free

spherical bearingsspherical bearings

dd’’ArtagArtag

nannan

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Old design on the continuous grease system

Classical problemClassical problem……

The side sheavesThe side sheaves

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Side sheaves: oil bath with gravitation tank in combination with special mechanical seal

Side sheaves on Side sheaves on

dd’’ArtagnanArtagnan

dd’’ArtagArtag

nannan

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Side sheaves: oil bath with gravitation tank in combination with special mechanical seal

dd’’ArtagArtag

nannan

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Side wire guiding sheaves: oil bath roller bearings in combination with synthetic sliding bearing

dd’’ArtagArtag

nannan

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Side wire guiding sheaves: oil bath roller bearings in combination with synthetic sliding bearing

dd’’ArtagArtag

nannan

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The spud hoisting system on d’Artagnan: a traditional clamp system based on friction and lever working…

High technology needed High technology needed ……

The spud hoisting systemThe spud hoisting system

dd’’ArtagArtag

nannan

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but with surface hardened stainless steel bushes.

dd’’ArtagArtag

nannan

dd’’ArtagArtag

nannan

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Traditional system: sealing/greasing on the continuous greasing system

The most difficult The most difficult

obstacleobstacle……

Underwater pump bearing Underwater pump bearing

and gearbox sealand gearbox seal

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sealing/greasing system underwater pump bearing and gearbox output shaft

dd’’ArtagArtag

nannan

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dd’’ArtagArtag

nannan

sealing system underwater pump bearing and gearbox output shaft

Connected to atmospheric drain tank

Liquidyne seal

Connected to expansion tank just above bearing

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dd’’ArtagArtag

nannan

sealing system underwater pump bearing

Connected to atmospheric drain tank

Liquidine seal

Connected to expansion tank just above bearing

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Case d’Artagnan

CONTRACT SPECIFICATION

O30 GREASING SYTEMS

The mechanical components of the dredging system are designed for

functioning without or with reduced continuous greasing.

Greasing points, where regular or continuous greasing is required, are

connected to a central automatic 2central automatic 2--line greasing systemline greasing system.

If the grease flow is important, used grease will be led to a collecting point

for removal, if necessary with piping.

NO CENTRAL GREASING SYSTEM d’ARTAGNAN (2005)

AMBIORIX (2012)

AL JARRAF (2011)AMAZONE (2012)

GREASE GUN WITH ELECTRONIC DOSING COUNTER

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Harmful lubricant emission eliminated

ResultResult