Bomag Gmbh & Co., Ohg

Karl Hermann M&ouml;tz

Uwe Blancke

The invention concerns a device for ground compacting, having at least one vibrating roller whose casing surface is composed of a plurality of segments in the peripheral direction, at least some of which have midpoints which describe an arc having a radius of curvature that deviates from the mean radius of the roller. In order to smooth the jolting movement resulting from the shape of the rollers in devices of this type, it is proposed to construct the tire casing of the roller from several sections lying adjacent to one another in the axial direction, said sections having segments abutting one another in the peripheral direction, whereby the abutting edges are displaced vis-&agrave;-vis one another in the peripheral direction.

Device for earth packing having at least one vibrating roller

A device for checking the compaction, in particular, of black top pavement in street and roadway construction, using a vibration roller drum that is provided with a compaction checking device is provided. In the compaction of black top pavement, the measurement methods of the dynamic ground rigidity, known from ground compaction, for determining the condition of compaction that has been achieved, can not be used since the asphalt rigidity varies between two measurements with the temperature and in addition, the underground rigidity is measured with it proportionately. In order to solve these problems, a second vibration roller drum is provided which has a second compaction checking device, whereby the second vibration roller drum is coupled to the first vibration roller drum essentially following it in the same track. In this way, for the comparison of the values determined, the temperature dependence of the measurement values determined is eliminated. Furthermore, an evaluation unit is present, which compares the measurement results of the two compaction checking devices. In this way, the underground rigidity is eliminated in the measurement values.

Growing community of inventors

Nörtershausen, Germany

Karl Hermann Mötz

Growing community of inventors

Nörtershausen, Germany

Karl Hermann M&ouml;tz

Karl Hermann Mötz