Patent ID: 7905682
Filing Date: 2011-03-15
Classification: B28D,E01C

Abstract:
1. A construction machine for working ground surfaces or for stripping traveled surfaces, the construction machine comprising: a machine frame supported by two front running gears and two rear running gears; a milling box attached to the machine frame between the front and rear running gears, the milling box containing at least one milling roller with chisel holders and chisels; a drive arrangement for driving the chisels; a signal pickup unit assigned to at least one machine component involved in a work process, wherein the signal pickup unit detects a drive torque as a signal at one or several locations of the drive arrangement, and the signal pickup unit is connected to a signal output unit via a signal processing arrangement; wherein the detected torque is compared to a preset signal range to ascertain a wear condition of the chisel.