Roadheaders

Currently the dhms roadheader family consists of three weight classes with weights from 61 t to 130 t and cutting power ranges from 200 kW to 400 kW.

With their new, compact design Deilmann-Haniel roadheaders of the lower and middle weight class, dh R60(t) and dh R75(t), have been specially adapted to the challenges posed by development drivage work in coal mines. In customized versions these dhms roadheaders are also used for mineral mining and tunnel projects.

Roadheaders of the upper weight class, dh R130(t), have been designed especially for use in mineral mining and tunneling. 

Due to the low machine heights of 2,200 mm (R60t) and 2,500 mm (R75/R75t) the same equipment can be used to drive low-profile and high-profile roadways, such as main gates and tail gates, as well as arch-section and rectangular headings and face development headings with low roof heights.

Various special designs of the roadheaders of the series dh R130(t) make for optimum adaptation to nearly all requirements in mineral production as well as in tunneling.

The installed cutting performances in combination with high machine weights and the automatic stabilisation system allow effective cutting in harder rock formations and high production performances in mineral mining.

The telescopic cutting boom (dh R60T, dh R75t, dh R130t) facilitates the cutting head to sump into the face, thereby reducing wear and tear on the crawlers and helping to protect the roadway floor.

Wide carriages and the resulting low ground pressure as well as the low water consumption of the optional water-mist spray system facilitate manoeuvring on soft and water-sensitive roadway floors. The prevention of larger water quantities in roadway drivages and production areas also favours the use especially in inclined roadways, tunnels and extraction areas.

The optionally integrated drilling and bolting system makes for quick and accurate installation of rock bolts. Besides conventional bolting positions in arch-section and rectangular roadways the drill rig can also adopt any conceivable drilling angle in the drivage direction, as may be required for exploration or reinforcement work. High-performance hydraulic rock drills ensure short drilling and bolting cycles no matter what bolting method and bolt length will be used. Tailor-made drill feeds systems allow optimum matching to the required drilling and bolting tasks and to different roadway profiles.

dhms roadheading machines are steered using separate radio control consoles that ensure reliable, accurate and ergonomic handling. An automatic profile display and recording system is used to maintain the accuracy of the cutting profile, while all relevant status conditions are displayed and monitored by an on-board data acquisition and diagnosis unit that also relays the signals to the control room and to an online data system.

Various design features and accessories for the three roadheader classes allow for optimum adaptation to different tasks and operating conditions.

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