Vibration tables: simplicity, reliability, mobility

The inspections are finished, the wires are coiled, the shield is packed... We finished yet another project—a vibration table with remote control—with a test run of the finished product. This time we had to work not only with the steel, but also the electrical part, which was implemented in full compliance with the technical specifications.  
Our vibration table is made of two pedestals standing on a single frame. Vibration tables are designed for compacting concrete mixtures in moulds. Its load capacity (mass of the mould plus concrete mixture) is up to 4,500 tons. It is equipped with four high-frequency vibrators with a frequency of 100 Hz and a driving force of 1400 kg each. 
The vibrating frame is anchored to the floor and mounted on damping rubbers, which minimizes the impact of vibrations on the foundation. To reduce lateral rolling, the springs are replaced by damping rubbers installed in buffer cups.
To prevent the steel mould from moving off the table and make it stay fixed during operation, a centring cone is installed at the table top, and the main frame of the steel mould has mounting holes, which eliminates the possibility of overturning the mould full of concrete during vibration.
The design consisting of two independent pedestals is optimal. Firstly, for small products only one part can be used. Secondly, the frame is exposed during vibration, which eventually causes the steel to break. This solution greatly reduces this stress, extending the life of the product.
Vibrators work in pairs with rotation only to the inside of the table top, which increases efficiency, properly compacts the concrete mixture and eliminates resonance. The vibrators are controlled from the panel, which, like the entire structure, can endure frequent moves from city to city, from plant to plant.
The main difference of this project is its mobility, so the electrical part is on wheels. Inside the switchboard there are a 42 V step-down transformer, a frequency converter and thermal relays for each vibrator to protect them from overheating. Two fans (input and output) cool the system.
Each vibrator is controlled from an external panel, which displays the control frequency from 25 to 100 Hz, the set amperage, and the voltage percentage load. Frequency control is possible right during vibration. The frequency converter provides a smooth start and stop.
The ability to adjust the frequency of rotation makes it possible to work with concrete mixtures different by weight, volume, or hardness. However, these parameters are calculated by means of technology. We have already sent the customer a vibration table, in which all his wishes are included: simplicity, reliability, mobility.
Got any questions? Contact us at or call 8(81153) 6-10-05
2021 Vibrating tables and pattens