Geodrill 20V

The constant rise of energy prices makes geothermal heat a profitable form of energy in contrast to fossil fuels. Also on the rise is the application of  ground source heat pumps (GSHP) for heating, but also for cooling, private and commercial buildings.


Beside the flat plate collectors, energy cages and the highly efficient GRD radial drilling method, high-capacity vertical drill rigs for reaching depths of more than 150 m are very popular for exploiting geothermal energy, especially in confined spa 

The new Geodrill 20 V, manufactured by TRACTO-TECHNIK, was designed exclusively for sinking geothermal energy bores, it works with a double-headed drilling system.

The application of two independently steered bore heads, with the ring bore crown on the outer rods and a deep hole hammer attached to the inner rods, allows the Geodrill 20 V to penetrate even the hardest rocky layers quickly and without any problems. Fluid-assisted drilling with an external slush pump can also be performed with the double-headed drilling system. Two hydraulic motors drive the outer rods via the front, the inner rods via the rear rotary drive. The drilling spoil is quickly transported out of the bore hole by the outer rods turning to the left and the inner rods turning to the right at the same time.

After the bore hole has been completed, the rods can be pulled out with a pulling force of 200 kN max. and a pulling speed up to  20 m/min. The safe and operation-friendly regulation of all drilling functions is performed single-handedly with a cable-conducted remote control equipped with three joysticks. A double rod-gripping system makes sure of the rapid and safe assembly and disassembly of the drill rods.

The high-quality, robust machine and mast construction with hardened slide rails, large track rollers, stable guiding slide and a large thrust chain with 3.5-fold security are also worth mentioning.

When the Geodrill 20V was designed and developed, special attention was paid to the application of the machine in confined conditions and on properties with buildings and surroundings of higher value. The rubber-tracked undercarriage and low load per surface of the Geodrill 20 V leave hardly any trace or signs of compaction on lawns and other surfaces. The relatively small footprint of the unit occupies very little space. A transportation width of only 1.60 m enables comfortable shunting, even if the space is rather confined. Extreme stability is guaranteed by a compensative weight distribution – the total weight amounts to only 9,300 kg – and efficient front and rear supports. Modern suction cleaning technique prevents dust or waste-water pollution. Noise emission is very low, thanks to elaborate sound absorbing measures. After application, the drill rig can be cleaned efficiently and comfortably with the high-pressure cleaner driven by hydraulic.

All in all, the Geodrill 20 V was designed in view of greatest efficiency concerning dimensions, performance and application conditions.
  


Advantages

Performance
• drilling depths down to 250 m possible
• maximal capacity already achievable at 2100 rpm of the diesel motor 
• independent of the geology due to the twin-head drilling method
• no return facility required


Rotation torque
• 18,000 Nm at the 1st bore-head and
• 9,000 Nm at the 2nd bore-head
• rotation torque is infinitely variable with an electric fine regulation (automatic drilling)

Pulling force 200 kN (20 t)
• up to 20 m/min. at 200 kN can be achieved in fast mode

Precision regulation for bore contact pressure

Remote control
• all drilling functions are actuated with three joysticks
• single-handed operation is possible

Robust machine construction (30 years of experience)

Stable front and rear machine support

Amply designed hydraulic cylinder

Clean machining
• optimised mast construction
• hardened slide rails
• large track rollers
• stable guiding slide
• large thrust chain with 3.5-fold security

Bore-head with two hydraulic motors
• large thrust bearings – pulling forces up to 173 t
• 70 mm shiftable bore-head (thread overdrive)
• water housing (free pass 50 mm)
• construction of the bore-heads is identical, therefore exchangeable
• wear parts are very reasonably priced because water housing and clamp jaws from
  the HDD range are used

Clamping and break-away facility
• self-centring clamp jaws
• breaking torque 40 % higher than the max. rotation torque

Standard drill rods, optimal grip thanks to rotating and self-centring clamp jaws

Hydraulic with load sensing control
• low energy loss - optimal user provision

Hydraulic high-pressure cleaner for binding dust and cleaning

High flexibility
• very narrow construction for tight access
• few lumped loads, hardly any surface damage
• with rubber tracks very mobile and flexible, can be set up in gardens
• transport length only 5.40 m
• low weight

Super-silenced drill rig

No dust pollution thanks to the latest suction cleaning technique

Generous maintenance intervals

CE-certified prototype testing by TBG – Munich

Extensive operation manual and spare parts list with colour photos and CAD drawings

Training on the jobsite

Reliable service – all over the world