SENNEBOGEN offers in its assortment , also called dragline excavators or hydraulic rope excavators for quarrying work and for the extraction of raw materials - in particular for the extraction of gravel, sand, coal, clay and other building materials. The machines are robust and particularly suitable for use with draglines or dragline buckets:
Performance in dragline operation is determined by high torques, high winch pulls and ergonomic control. An optimized fairlead with cable guide creates the best working conditions and reduces wear and consumption.
Duty cycle cranes with dragline buckets or dragline bucket excavators are the most important machines for quarrying, mining, raw material extraction or for excavation work.
A dragline excavator is a duty cycle crane equipped with an open dragline or dragline bucket. This attachment is used to pick up and convey raw materials and bulk materials above and below water. The dragline bucket consists of a heavily perforated half shell open at the front, which is suspended from two chain strands. Both chains are attached to the retaining/conveying cables of the cable duty cycle crane. The dragline hoisting rope is routed over the boom head and operated by the first free-fall winch. The dragline hoist rope runs frontally through the base of the boom and is connected to the second free-fall winch.
Equipped with the dragline bucket, duty cycle cranes can pick up and convey a wide variety of materials, including sand, gravel, clay or loam.
The free-fall winch operation allows the duty cycle crane to cast the dragline bucket more or less far as needed by swiveling the uppercarriage, much like a fishing rod. The duty cycle crane then pulls the ejected dragline through the material to be extracted until it is filled. This process can be done both underwater and above water. By swiveling the uppercarriage and simultaneously pulling up the dragline, the material is removed in a continuous motion sequence, transported to the unloading point and then unloaded.
The working range for dragline bucketing is at a boom position of 15° to 50°.
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