Vibration technology optimizes production conditions in a precast concrete plant

In a European concrete plant, precast solutions for the manufacture of such products as fence and noise-protection elements have been employed for many decades. In this plant, the elements are manufactured on vibrating tables in formwork frames for the private and industrial sector, adapted to the customers’various requirements and design variants.

To meet the most important aspects of quality, sustainability and a long service life, the concrete elements manufactured here excel in robustness and aesthetics – which implies and requires zero porosity. Targeted expulsion of air bubbles and uniform distribution of the concrete mass in the form are essential for a low-porosity, dense concrete structure: prerequisites for durable, faultless concrete.

The customer operates with a fully automated rotation system on which forms are filled with concrete and subsequently transported to the vibrating table. The next station is a kiln for drying before the forms are demolded and loaded for shipment. The system that was previously used for a long time had only two vibrators and required shutdown between processing cycles – which resulted in economically inefficient start-up and shut-down cycles.

This customer’s wishes and specifications are reflected in great detail in input of the dimensions of the forms to be used, as well as in integration of the GyroShake system from NetterVibration in the time-tested plants and processes in production and coordination of the interactions of the existing transport system.

In time-consuming and close collaboration with their customers, experienced engineers and technicians at NetterVibration have adapted a vibrating station of the GyroShake series to on-site conditions and specifications at the customer’s site, resulting in commissioning on location. 

Noise level reduction and longer maintenance intervals

High-frequency excitation and the resonance of materials emit enormous noise levels in the entire spectrum of mechanical engineering, especially in processing of steel molds. GyroShake operates with low frequency and greater amplitudes and therefore emits a reduced continuous sound level of below 70 dB(A).

Health and safety issues for the personnel at work in the immediate environment are of growing concern and are becoming an increasingly significant factor in weighting production facilities.

Low-frequency implementation in concrete compaction moreover effectively ensures less wear of the other components, which consequently extends the service life of the entire system measurably and means that maintenance is required less frequently.

Read the full article here (published in BFT Intenational 03/2024).

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