Longwall innovations to debut

AT AIMEX 2007 DBT will highlight its innovative new Compact Loader, which is making its world debut at AIMEX 2007.

DBT will highlight its innovative new Compact Loader, which is making its world debut at AIMEX 2007.

DBT will present this new member of its diesel fleet at a press conference on 9.30am on the first day of the show Tuesday 4 September.

Other exhibits include the revolutionary Longwall Top Coal Caving (LTCC) roof support, the EL62 — said to be the most powerful medium-seam ranging arm on the market, and automation products including PMC-R shield control and PMC-D drive control.

The DBT booth will also feature live data transfer from an Australian mine. Two of the products on display — the LTTC roof support and the Compact Loader — are developed and manufactured in Australia.

Compact Loader

Designed and manufactured in Australia, DBT’s newly developed Compact Loader debuts at AIMEX 2007. DBT Australia has engineered the Compact Loader to access the previously inaccessible.

With a width of only 1995 mm, optional cab height and a machine cover height of only 1350, the DBT Compact Loader has a much smaller roadway presence than any other modern machine available on the market.

A hydraulic height adjustment option allows the Compact Loader to be lowered for access or loading and then raised while driving for greater ground clearance. It sets the bar in size and carrying capacity in the sub-10-tonne market.

Modularity was a key design criterion to ensure great flexibility in application. It allows the mine owner or contractor to select the features they require.

The front frame is equipped with a parallel lift, allowing use of work baskets, forks and buckets. The lifting capacity is 6-8 tonnes, with a range of dedicated attachments, including side-shift forks, slewing jib crane, buckets (direct mount, spade or straight lip), general-purpose trailer, pipe trailer, belt/cable reeler, manual side shift forks, work platform, fuel pod, and concrete kibble.

The DBT Compact Loader comes standard with a universal Rapid Attachment System RAS & QDS for rapid pickup and release of accessories.

LTTC roof support

DBT has built Australia’s first Longwall Top Coal Caving (LTCC) system at the AUSTAR mine in the Hunter Valley.

The LTCC shield on display — like the ones in service in the mine — allows mining to the total seam height of up to 8 m by using a longwall shearer to cut the bottom 2.8-3 m and then caving the top coal. Mine owner Yancoal Australia chose DBT to engineer the special shields and conveyors required for safe automated high-performance extraction.

The fully integrated system perfectly tailored to geological conditions at AUSTAR is successfully extracting the full coal seam and targeting production of over 80,000 t per week at 80% recovery. The LTCC shield support extends from 1900 mm to 3500 mm and provides a total support capacity of 1040 t and is fully automated with DBT’s latest generation PMC-R control, which is also on display.

Where poor roof conditions are encountered, or top coal is of poor quality, top coal caving can be temporarily suspended until conditions improve.


Shields in automatic longwalls need sophisticated control systems — and the PMC-R roof support control delivers. Designed for rigorous duty in harsh environments, the PMC-R is DBT’s state-of-the-art automated control for longwall roof support applications.

A member of the Programmable Mining Control family, it allows bi-directional adjacent neighbor functions, limited remote control for single functions of up to five shields (visible range) in standard faces, and remote control in faces without operators.

Software is available for automated and fully automated plow systems, allowing longwall mining in medium and thin seams without operators present at the face.

Once the coal is cut, you need to move it out. Face conveyors require sophisticated drive systems. That’s where the PMC-D control unit offers combination of high power with safe start-up of the loaded face conveyor, full utilization of the installed power, long service life of components, and compact dimensions.

Live data transfer

The DBT booth will also feature a live data feed from several Australian mines allowing visitors to visualise real time longwall extraction processes.

Customer Service

Highlights of the DBT Five-Star Service will be presented on a video wall showing how DBT customer service with on-site service, repairs, overhauls and spare parts ensures reliability and productivity throughout the long service life of DBT equipment.

Stand 0216

DBT Australia Pty Ltd

Representatives: Andrew Richmond



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