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34 PLaNT NeWS DeLMag RHV 40 ROTaRY DRILLINg RIg The engines of the units comply with European emission standard EU stage IIIB, which comes into force in 2011. THe RHV 40 ROTaRY DRILLINg RIg WaS DeSIgNeD FOR LaRge PILe DIaMeTeRS: UP TO 2400 MM FOR THe STaNDaRD VeRSION, 2700 MM FOR THe SPeCIaL VeRSION. The RHV 40 has a torque capacity of 400 kNm and is characterised by high stability and good torsional stiffness. The leader can be tipped forwards and consists of two sections. For transport, the upper leader section plus kelly bar, rotary table and counterweight are removed and transported on a second low-loader. The complete setting-up procedure is carried out solely with the on-board equipment, no additional plant is required. The RHV 40 is mounted on ABI’s own T 122 D carrier. The machine can be supplied with either a Scania or a CAT engine, which develop 405 and 403 kW respectively. The engines meet European emission standard EU stage IIIB and American standard US EPA tier 4 interim. However, the machine can also be fitted with engines that comply with EU stage IIIA or EPA tier 3. Besides traditional drilling with a kelly bar, this powerful rotary drilling rig is also suitable for CFA drilling or lined holes using the DELMAG twin rotary head or the VDW (“in front of the wall”) drilling system. n LEADER-GUIDED MRZV-VV VIBRATOR WITH COMBINATION CLAMPING UNIT The new, powerful MRZV-VV generation of variable vibrators is being launched onto the market together with the new combination clamping unit with sliding and rotating individual clamps. With the VV vibrators it is not only the eccentric moment that is adjustable, but also the oil flow and the hydraulic motor. This means it is still possible to work very efficiently even at a low r.p.m. with a high eccentric moment and hence a high feed rate, for instance. The other variation involves reducing the vibration load on the environment by working at a very high r.p.m. Irrespective of whether working very efficiently or very gently or somewhere in between these two extremes to suit the particular building site, the power provided by the carrier machine is used almost to the full over the whole r.p.m. range. This optimum use of the power available opens up new opportunities. Comparable driving tasks can now be carried out using machines with a lower driving power, or more difficult tasks with the same driving power. This cuts investment and running costs and at the same time lowers the impact on the environment by sparing resources. Deploying the new MRZV-VV vibrators with the combination clamping unit enables very efficient working. Various double Z- and U-sections and tubular piles can be driven using the combination clamping unit. Setting-up is carried out manually without the need for any assembly work. The double clamping unit is currently offered in two sizes: a small version for a centrifugal force of up to 800 kN, and a large version for max. 1250 kN. The smaller combination clamping unit can handle tube inside diameters between 460 and 760 mm; the larger version is for tubes with an inside diameter of 660–1090 mm. n The benefits of MRZV-VV vibrators • Adjustable eccentric moment and r.p.m. • Constant centrifugal force over a wide r.p.m. range • Greater amplitude than conventional leader-guided variable vibrators • Lower running costs thanks to optimised power output over a wide r.p.m. range • Low ground vibration thanks to high speeds up to 2600 r.p.m. • Max. centrifugal force even at a low r.p.m. • Same driving tasks with a lower power output from the base machine The benefits of combination clamping units • Suitable for Z- and U-sections in the form of double piles, also tubular piles • Faster section changes, manual setting-up possible • Less wear on the heads of the sections • Accurate positioning of piles PLaNT NeWS 35
36 PLaNT NeWS MÜLLER-SOUND-INSULATED VIBRATION TECHNOLOGY IN USE ThyssenKrupp GfT Tiefbautechnik has developed the so-called acoustic hood, initially for the models of the HFV series, in order to protect people and the environment, especially in built-up or sensitive areas. MS-10 HFV with acoustic hood The sound level measurements carried out with a standard vibrator from the HFV series, with and without acoustic hood, under standard testing conditions show that the hood reduces the sound level by a remarkable 10 dBA. The acoustic hood not only reduces noise emissions, it also places a further, beneficial vertical load on the spring yoke. It protects the entire exciter block in such a way that the plant can also be laid aside during breaks in the work without the need for a special frame. The hood includes special openings that allow maintenance and service work to be carried out without having to remove the hood. MS-10 HFV without acoustic hood MS-a 570 (V) technical data CaT C18 aTTaC diesel engine • EU/EPA emission standard: stage II/tier 2 • Output: 571 kW • 1800 r.p.m. • Weight without fuel: 8500 kg • Diesel tank capacity: max. 1050 l • Hydraulic tank capacity: max. 440 l MS-28 HFV technical data • Centrifugal force: 1473 kN • Eccentric moment: 0–28 kgm • Frequency: 36.5 Hz • Line pull: 500 kN • Dynamic weight: 3120 kg • Transport weight: 5320 kg The MS-28 HF V compact variable high-frequency vibrator Pump • Vibrator drive pumps: 3 x 130 cm 3 /rev. • Flow rate: max. 1050 l/min • Operating pressure: max. 380 bar • Clamp hydraulic pump: 10 cm 3 /rev. • Flow rate: max. 27 l/min • Operating pressure: max. 350 bar MS-35 H3 technical data • Centrifugal force: 834 kN • Eccentric moment: 32.5 kgm • Frequency: 25.5 Hz • Line pull: 400 kN • Dynamic weight: 2660 kg • Transport weight: 3600 kg The MS-35 H3 compact powerful vibrator with fixed eccentric moment PLaNT NeWS 37 The quiet yet powerful MÜLLER power packs are also gentle on the ears, and a newly developed intermediate unit has been added to this range. This new power pack, the MS-A 570 (V), is ideal for use with the MS-65 H3, MS-28 HF V and MS-32 HF V vibrators, which in the meantime have also undergone further development. Special features • Closes the gap between the MS-A 420 (V) and the MS-A 700 (V), in terms of both output and flow rate. • Good handling during transport thanks to compact housing. • Can be used in conjunction with the most diverse vibrators. A further unit with a higher eccentric moment has been added to the range of powerful vibrators with fixed eccentric moment and compact housing. Special features • Greater centrifugal force and eccentric moment but still using the tried-and-tested compact design. • Higher amplitude to improve the friction effect in cohesive soils. • Can be used with our powerful, reliable MS-A 260 power pack, which is well-proven in practice. • Complements the series by providing a new intermediate model between the units with 25 and 50 kgm eccentric moment. Following the successful introduction of the MS-20 HFV, a new, powerful, compact vibrator has been added to the range of variable high-frequency vibrators. Special features • Increased eccentric moment for improving the friction effect in difficult soils. • A modified spring yoke means that setting down the unit does not subject the suspension ropes to severe stresses. • Optimum exploitation of this vibrator’s performance is ensured when used together with the MS-A 570 (V) • Routing hoses outside the spring yoke simplifies maintenance.
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Page 9 and 10: 16 WORLDWIDe MORE TRAINS ACROSS THE
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