Vibratory hammers

The classic pile driving setup includes a power pack and a vibratory hammer. The heart of any vibratory hammer is the exciter block, containing pairs of counter-rotating eccentrics running in heavy-duty special bearings. Arranged at the top of the machine is a spring yoke, whose job is to absorb the vibrations caused by the exciter block before they can reach the carrier.

The power pack is driven by a diesel engine and supplies the oil flow to the vibrator via hydraulic pumps.

This ensures that the vibrator is supplied with energy to drive the piling into the soil.

Operating principle of a typical Müller vibrator

H series with fixed eccentric moment.

The vibrators in this series are extremely robust and suitable for
driving in loose to medium-dense soils. The “stretched” base plate
in particular is ideal for driving and extracting pipes for in-situ
concrete piles. The clamping devices on the base plate can be
steplessly adjusted to allow a simple changeover to different pipe
diameters on site.

HHF series with stepwise variable eccentric moment – two in one.

The vibrator can be adapted quickly to different soil conditions by a simple system of adding or removing weights, allowing the eccentric moment to be varied. For example, if high frequency is required for work in loose sand, the additional weights can be removed simply on site to achieve high frequencies with the same centrifugal force.

HFV series with variable frequency and amplitude and resonancefree 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.

An overview of the most common excavator types with their performance data and recommended vibrators is available as a PDF file.
This service offers an orientation guide; however, selections should
always be confirmed by specialists.