Patent ID: 6722815
Filing Date: 2004-04-20
Classification: E01C

Abstract:
A soil compacting device, comprising:a soil contact element; a vibration generator that impinges on the soil contact element; a drive for the vibration generator; an amplitude control device for controlling the amplitude of a vibration produced by the vibration generator; the amplitude control device comprising: a detection device for recognizing a special state of vibration of the soil contact element; an amplitude adjustment device for adjusting the amplitude of the vibration; and an amplitude control unit for controlling the amplitude adjustment device in such a way that, in a first control measure, the amplitude of the vibration is able to be reduced if the detection device recognizes a special state of vibration, and, in a second control measure, the amplitude of vibration is able to be increased if the detection device does not recognize a special state of vibration; and comprising a frequency control device for controlling the frequency of the vibration produced by the vibration generator; the frequency control device comprising: a power determination device for determining a drive power delivered by the drive for the vibration generator; a frequency adjustment device for adjusting the frequency of vibration; and a frequency controlling device for controlling the frequency adjustment device in such a way that the drive power determined by the power determination device is able to be maintained approximately at a predetermined value; wherein the amplitude control device and the frequency control device are arranged parallel to one another in such a way that a reduction of the drive power, resulting from a reduction of the vibration amplitude by the amplitude control device, for the vibration generator is able to be at least partially compensated by increasing the frequency of vibration, and vice versa.