Wirtgen Gmbh

Sebastian Bötzius

Cyrus Barimani

Christian Berning

Günter Hähn

Axel Mahlberg

Tobias Stinner

Klaus Vollmann

Stefan Scheer

Björn Buchholz

A milling unit for an earth working machine including a milling drum and a milling drum housing; the milling unit comprising a closed operating-medium circuit that includes an operating-medium pump that is embodied to drive the operating medium to circulate in the operating-medium circuit; the operating-medium circuit including a heat exchanger through which operating medium flows during circulating flow of the operating medium; the heat exchanger being arranged on the milling drum housing. Provision is made that the heat exchanger is configured for flow impingement by a cooling gas separate from the operating medium; and that a cooling fan, which is embodied to drive the cooling gas for flow impingement onto the heat exchanger, is arranged on the milling drum housing.

Intentionally replaceable earth working machine milling unit having a cooling fan for cooling a closed operating-medium circuit

An earth working machine (), in particular a road milling machine, a stabilizer, or the like, having a milling drum () that is mounted rotatably on a machine frame () and is populated or populatable on its outer circumference with working tools (); the working tools () to come into contact, during working operation, with the ground that is to be worked to remove it; a drive unit () drives the milling drum () by means of a drive motor (); an input drive shaft () couplable to the drive motor () is attached to the milling drum (); and a ballast element, constituting a kinetic mass (), increases the kinetic energy of the milling drum (). The kinetic mass () is couplable to or decouplable from the rotatable milling drum (), or a rotational member indirectly or directly coupled to the milling drum (), via a shiftable coupling ().

Earth working machine

The invention relates to a working device for a ground-processing device having a milling drum with a milling drum tube on whose surface working tools are mounted in a projecting manner and are intended to come into contact with the material to be milled during the milling process, wherein the working device has a powertrain for driving the milling drum. In order to improve the running smoothness of a ground-processing machine, provision is made according to the invention for at least one load weight to be arranged, preferably interchangeably, on the powertrain and/or on the milling drum to increase the kinetic energy.

Working device

Growing community of inventors

Siegburg, Germany

Sebastian Bötzius