Hamm Ag

Hans-Peter Ackermann

Peter Janner

A compaction device includes at least one traveling drum rotatable about a drum shaft and having vibration exciters including unbalanced masses rotating out of phase by 180 degrees in the same direction of rotation and generating an oscillation torque about the drum shaft, and having a drive shaft running coaxial to the drum shaft for driving the vibration exciters. The drum is divided at least once and each drum part includes at least two coupled vibration exciters mounted at a distance from the drum shaft in the drum.

Compaction device and method for compacting ground

In a method for determining a compaction degree of a surface segment, the following steps are provided: passing over the deposited layer of the surface segment to be compacted, determining positional data of a position of the compacting machine, defining a current partial surface of the surface segment of the deposited layer, the current partial surface possibly consisting of a plurality of subsegments which have already been passed over, measuring and/or picking up parameters at the position of the compacting machine, and storing the parameters together with the position data, assigning the parameters to the current partial surface or to all subsegments of the current partial surface, computing, from the parameters, a current compaction degree for the current partial surface or each subsegment of the current partial surface.

Method for determining a compaction degree of asphalts and system for determining a compaction degree

The inventive self-propelled vehicle, in particular a road-building machine, comprises a traction drive, a steering device and a rotatable driver seat () in which a traction drive control unit () is arranged. Adjustment signals for the traction drive are generated according to the direction of the adjustment of the control elements of said control unit (). Said road-building machine also comprises a device for detecting the rotation angle &#x3bc; of the instant rotating position of the seat and for correcting the directional components of the adjustment signals of the control elements to a &#x2212;&#x3bc; angle in such a way that the direction of the adjustment thereof corresponds to the direction of the vehicle motion at each rotating position of the seat.

Self-propelled vehicle, in particular a road-building machine and a method for driving and controlling a vehicle with the aid of a rotatable driver seat

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Tirschenreuth, Germany

Hans-Peter Ackermann