DEVICE FOR GROUND COMPACTION AND METHOD FOR OPERATING AND MONITORING THE SAME

摘要

To decrease the complexity of a device for ground compaction as to measurement of a degree of compacting a ground foundation, and to reduce a cost.SOLUTION: A device for ground compaction includes a frame, a drive motor supported by the frame, a vibration exciter driven by the drive motor, and a ground compaction apparatus, in particular a base plate or a roller drum, that is connected to the vibration exciter. The vibration exciter causes the ground compaction apparatus to vibrate at a fixed vibration frequency or within a vibration frequency range during a compaction operation. A conversion device 7 for the conversion of vibrations of the device for ground compaction into electric energy is provided. The conversion device 7 includes two spring-mass systems 10, 11 with different resonance frequencies, and a control unit 17 is provided which determines a degree of compaction of the ground from the electric energy obtained by the individual spring-mass systems 10, 11, in particular the respective voltages. Moreover, the present invention relates to a method for monitoring changes in the ground compaction produced with the device for ground compaction.SELECTED DRAWING: Figure 2