Self-propelled construction machine and method for working ground pavements
AssigneeWirtgen GmbH
InventorsStefan Wagner, Markus Bach, Axel Mahlberg, Markus Schäfer, Eduard Fitz
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AssigneeWirtgen GmbH
InventorsStefan Wagner, Markus Bach, Axel Mahlberg, Markus Schäfer, Eduard Fitz
Estimating the term…
A self-propelled construction machine comprises a machine frame, at least three travelling devices, at least one hydraulic drive system for driving at least two travelling devices, wherein the hydraulic drive system comprises at least one controllable hydraulic motor with variable displacement volume and at least one hydraulic pump, at least one working device (e.g. a milling drum), for working the ground pavement. A detection device detects fluctuations in the longitudinal speed of the construction machine during movement thereof, wherein a control unit alters the displacement volume of the at least one controllable hydraulic motor as a function of the detected fluctuations so that the natural frequency of the hydraulic drive system is altered, wherein the control unit adjusts the discharge volume of the pump as a function of the amount of adjustment of the displacement volume in such a fashion that the specified drive speed remains constant.
A self-propelled construction machine comprising:
A method for working ground pavements using a construction machine self-propelled by means of travelling devices, in which the travelling devices are driven by a hydraulic drive system, wherein the hydraulic drive system comprises at least one controllable hydraulic motor with variable displacement volume and at least one hydraulic pump, and wherein a working device works the ground pavement, the method comprising:
Dependencies are inferred from the claim text.