Three working principles at your choice
MÜLLER vibrators with resonance-free starting and-infinitely variable amplitude as well as “two-in-one”-vibrators with stepwise variable eccentric moment and frequency offer advantages in that they can be adapted to suit different working conditions.
Vibratory Drivers H Series
Muller vibrators with fixed eccentric moment (H series)
The vibrators are fitted with eccentrics which generate a fixed eccentric moment of 25 or 65 kgm. For continuous use or use in extreme climatic conditions, vibrators can be equipped with a forced lubrication system including oil cooling (H3 series).
- HF/H2 hammers are suitable for driving and extracting in medium-driveability soils and are used as free-riding units or guided by leaders.
- Muller vibrators, fixed static moment,
- Constant amplitude – high power density
Vibratory Drivers HHF Series “two in one”
High-frequency MÜLLER “two in one” vibrators with stepwise variable eccentric moment (HHF series)
The vibrators in the HHF series are suitable for a broad range of applications. The eccentric moment can be increased or reduced in steps by adding/removing additional weights, allowing one vibrator to achieve different amplitudes and frequencies. Eccentric moments of up to 190 kgm can be generated.
- HHF (two in one) units guarantee high power in medium to low driveability soils.
- Müller vibrators “two in one”, high-frequency, adjustable amplitude and frequency,
- high performance – adapted amplitude normal frequency – large amplitude.
Vibratory Drivers HFV Series
High-frequency MÜLLER vibrators with variable eccentric moment (HFV series)
When starting these vibrators, the eccentrics are arranged in such as way as to mutually balance out the centrifugal forces they generate and thus prevent any vibration. Once the required frequency has been reached, the eccentrics are turned counter to each other so that the centrifugal forces act in the same direction and generate vibration. This makes it possible to avoid passing through the resonance frequency of the soil (approx. 10 to 25 Hz depending on soil type) during starting and stopping.
ThyssenKrupp GfT Bautechnik uses specially developed high-frequency vibrators made in-house which run without resonance and guarantee environmentally friendly installation.
On the units with variable exciter blocks the eccentrics are phase shifted 180 degrees before the vibrator is switched on so that the eccentrics cancel each other out and the machine runs at zero amplitude.
- Müller vibrators, variable high-frequency
- Resonance-free starting and stopping – frequency and amplitude variable during operation