The Caterpillar stand at bauma 2010 features a new DEM50 ultra high demolition (UHD) machine manufactured by Demlone. The DEM50 offers a flexible working height of 18, 21 or 23 meters and can carry a work tool weighing up to 3,000 kilograms throughout most of the working range. This means improved performance and versatility for demolition contractors compared to previous models available from Caterpillar dealers.
The DEM 50 is the first machine resulting from a close cooperation between Caterpillar and Demlone, a subsidiary of a French demolition equipment specialist Vensys Group. Built on the Caterpillar 336D L demolition duty hydraulic excavator, Demlone manufactures the front-end structures and assembles the completed machine.
Increased performance
Utilising the undercarriage of the robust Cat® 336D with purpose-built, strengthened heavy-duty upper frames, the DEM50 offers working heights of 18, 21 and 23 meters, from a modular boom and stick system. Its demolition equipment is made up of a main boom section, 3-meter and 5-meter boom extensions and a single stick, allowing contractors to rapidly change between the three different working heights.
The machine is equipped with a hydraulic boom foot quick coupler, with the lower pins being controlled hydraulically from the cab. All of the hydraulic hoses between the boom foot and the main boom structure are equipped with quick disconnects, so that the boom configuration can be changed in 20 minutes, far less than the 3-4 hours of previous machines.
A standard reach backhoe boom can also be supplied as an option, using the same rapid-fit pin system. This provides increased productivity for the customer, as the machine can complete a wider number of tasks on the demolition job site.
Through the use of Weldox 700 high elastic limit steels in the construction of the front-end equipment combined with a heavy-duty counterweight, the DEM50 has been designed to work with work tools weighing up to 3,000 kilograms. A wide range of Cat work tools, including multiprocessors, demolition and sorting grapples, demolition shears and buckets, is available.
The Caterpillar Tool Control System allows the operator to programme up to 10 hydraulic output settings for the auxiliary circuits. This reduces the time required to change between work tools, as the machine can be preset to work with dedicated breakers, pulverisers and other tools.
Stability and safety
The DEM50 is equipped with Demlone’s Range Monitoring System (RMS) that incorporates sensors on each boom section, on the machine’s upper structure and on the track frame. These sensors transmit information to a central control unit, recording the machine’s working position, any slope on which it is operating, extension of the boom and the track position if equipped with variable gauge tracks.
Through a touch screen display in the cab, the RMS system informs the operator of the machine’s positioning and capacities. If the machine is operated outside the safe working envelope, the system generates an alarm.
Contractors can choose between Cat 336D L long and wide undercarriage or a hydraulic variable gauge (HVG) undercarriage, which provides increased over-the-side stability. The HVG track system allows a change from the transport width of 2,390mm to full working width of 2,820mm (with 600mm shoes) in less than a minute.
The DEM50 can be equipped with a full auto-lubrication system with a programmable grease pump. The routing of the lubrication lines has been designed to increase impact resistance through grooved welded plates.
The tool and bucket cylinders in the front-end have a robust sliding guard to provide protection to the cylinder rod. A dust suppression system at the boom tip is available as an option, improving the visibility for the operator and reducing the impact on the working environment for the customer.
Total control
The Cat D Series cab offers high levels of comfort and visibility. The cab tilts hydraulically by up to 30 degrees, to provide the operator with increased visibility when working at full height, yet is no higher than a standard machine for transportation.
A Demlone compressor mounted in the rear of the upper structure provides high pressure air to a series of nozzles located on the exterior of the protection structure, above the cab. These nozzles can be used to blow dust and debris from the cab top glass, maintaining visibility during operation.
The machine’s high resolution display screen is utilised by rear mounted camera systems, and an optional demolition stick camera is available to provide a close-up view of the working area.
Transport ease
Weighing in at 45-48 tonnes, depending on configuration, the DEM50 has a maximum shipping length of 17,470mm. Optional UHD and extension cradles are available to provide secure storage and ease of transportation for the various boom elements. All of the boom sections are equipped with lifting eyes and the optional transport cradle has walkways built-in to make it easy for the operator to position the sections.
Close cooperation
Caterpillar and Demlone work in close cooperation for a full line of ultra high reach demolition equipment, commencing with the DEM50 and the larger DEM70, which offers 26m, 29m and 31m working heights that are both available for order at Bauma. A third machine, the DEM100, will be introduced later in 2010.
Caterpillar has decided to work with Demlone in the demolition sector due to Demlone’s extensive market knowledge, engineering, manufacturing and customisation capabilities. By working together, Caterpillar and Demlone can provide dealers and customers with improved product flexibility, availability and performance. Sales and service support is provided by the Caterpillar dealer network.
Source:http://deutschland.cat.com/cda/layout?m=343975&x=7
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