Dragline in vendita

Sfoglia 19 macchine Dragline su Machmon. Confronta modello, posizione e stato, poi contatta i venditori con le opzioni di richiesta indicate.
Annunci 19
guida all'acquisto

Dragline

Crawler-mounted lattice-boom machines that cast a rope-hung bucket to dig below grade, dredging channels, ponds and canals, working aggregates and shifting bulk material beyond a hydraulic excavator's reach. Understand the class below, then compare the live stock by make, year, hours and price.

Disponibile19 macchine3 mostrano un prezzo
Annida 1972 a 2016nuovi e usati
Situati principalmente inGermania · Romania · Paesi Bassi
Peso operativoda 30 a 50 tintervallo tipico

Cerca per marca

Weserhütte 6 Liebherr 3 Menck 2 Faller 1 Priestman 1 Ruston-Bucyrus 1 Sennebogen 1 Stichweh 1

Modelli popolari

Ruston-Bucyrus 51-60 Liebherr 832 Liebherr HS 8130 HD Liebherr HS 832 HD Faller K110R Stichweh KS400S

Scegliere il tipo giusto

Crawler dragline vs hydraulic excavator with dragline bucketA dedicated crawler dragline suits sustained deep, wide-reach digging; a hydraulic excavator rigged with a dragline bucket covers occasional or smaller-scale below-grade work without a specialist rig.
Boom length and bucket size pairingA longer boom extends reach and dig depth but caps the bucket size the rig can swing safely; shorter booms allow a heavier bucket and faster cycles at reduced reach.
Duty-cycle rigsThe same crawler base often swaps between a dragline bucket and a grab or clamshell attachment, so the winch and boom are sized for repeated heavy-cycle work, not just casting and hauling.
Mechanical vs hydraulic winch driveA mechanical winch drive is simple and rugged for continuous casting cycles; a hydraulic winch drive gives finer control and easier fault diagnosis but adds hydraulic system upkeep.

Cosa controllare prima dell'acquisto

Rope conditionInspect hoist and drag ropes for broken wires, flattening, kinks and corrosion; worn rope is a routine wear cost but a sign of neglect if paired with other deferred maintenance.
Fairlead and drum wearCheck fairlead rollers and winch drums for grooving, uneven wear and bearing play, since rope life and casting accuracy both depend on smooth, true running surfaces.
Lattice boom straightness and chord damageSight down the boom for bends or twist, and inspect chords and lacing for cracks, corrosion and prior repairs; a straightened or patched boom needs a proper structural assessment.
Clutch or brake and winch conditionTest hoist and drag clutches or brakes for smooth, positive engagement without slip or grab, and confirm the winch gearing runs quietly with no excessive backlash.

Domande frequenti

When does a dragline beat a hydraulic excavator?

Draglines win when material sits below grade or underwater and reach matters more than cycle speed, such as pond and canal work, aggregates dredging and deep bulk excavation a hydraulic boom cannot reach.

How does boom length affect bucket choice?

Longer booms trade bucket capacity for reach and depth, so a rig set up for maximum reach typically carries a smaller bucket than the same machine fitted with a shorter boom.

Can one rig do dragline and grab work?

Yes, many duty-cycle crawler bases switch between a dragline bucket and a grab or clamshell attachment, provided the winch, boom and rigging are rated for the heavier cycle loads that grab work brings.