Wirtgen Gmbh

Hardy Wilhelmi

Christian Berning

Karsten Buhr

Andreas Salz

Cyrus Barimani

Thomas Lehnert

Markus Frankemölle

Tobias Stinner

Sascha Spöth

Christopher Mittelstaedt

Christopher Mittelstädt

An earth working machine (), encompassing a drive motor () and a working apparatus () drivable by the drive motor () so as to move rotationally, the drive motor () being connected to the working apparatus (), for transfer of a torque, with interposition of a shiftable transmission () comprising at least two gearing stages having different torque transfer ratios,

Earth working machine having a shiftable transmission between a drive motor and a rotatable working apparatus

An earth working machine includes a machine frame, a drive configuration and a milling drum. A bearing stem is attached to one of the drive configuration and the milling drum, the bearing stem protruding in a first direction to a first axial end, the bearing stem having an outer surface including at least first and second cylindrical bearing surfaces axially spaced from each other, a furthest one of the cylindrical bearing surfaces from the drive axial end having a smaller diameter than a next furthest one of the cylindrical bearing surfaces from the drive axial end. A non-locating bearing is connected to the machine frame and configured to receive the first and second cylindrical bearing surfaces of the bearing stem.

Earth working machine having a rotatable working apparatus axially positionally retainable with high tightening torque by means of a central bolt arrangement, and method for establishing and releasing such retention

An earth working machine includes a support structure and a working assembly mounted on the support structure so as to be rotatable about a drive axis. An assembly-side bearing configuration is connected to the working assembly and a structure-side bearing configuration is connected to the support structure. The assembly-side bearing configuration includes a driver configuration having a driver surface facing in a first circumferential direction and the structure-side bearing configuration includes a driver counterpart configuration having a driver counterpart surface facing in a second circumferential direction opposite to the first, the movement spaces of the driver surface and of the driver counterpart surface about the drive axis overlapping one another.

Earth working machine having a positive connection between the rotating working assembly and its rotary bearing

An earth working machine (), encompassing a drive motor () and a working apparatus () drivable by the drive motor () so as to move rotationally, the drive motor () being connected to the working apparatus (), for transfer of a torque, with interposition of a shiftable transmission () comprising at least two gearing stages having different torque transfer ratios, is characterized in that by means of a first gearing stage of the shiftable transmission (), an input shaft (), coupled on the input side to the drive motor (), of the shiftable transmission () is connectable in torque-transferring fashion directly to an output shaft (), coupled on the output side to the working apparatus (), of the shiftable transmission () so as to rotate together at the same rotation speed; and by means of a second gearing stage of the shiftable transmission (), the input shaft () is connectable in torque-transferring fashion, with interposition of a transmission assemblage (), to the output shaft () so as to rotate together at different rotation speeds.

A bearing component for mounting a replaceable milling drum on an earth working machine includes an annular connecting flange having a central axis. A bearing stem protrudes from the connecting flange axially in a first direction to a first axial end, the bearing stem having an outer surface including at least first and second cylindrical bearing surfaces axially spaced from each other. The bearing stem further includes a centering recess open at a second axial end opposite the first axial end, the centering recess including an opening angle decreasing in steps so that the centering recess tapers in the first direction, the centering recess forming a portion of the central opening.

A replaceable milling drum for an earth working machine includes a milling drum tube and a protrusion structure fixed to the milling drum tube. A bearing stem protrudes from the protrusion structure axially away from a drive axial end of the milling drum tube. The bearing stem has an outer surface including at least first and second cylindrical bearing surfaces axially spaced from each other, a furthest one of the cylindrical bearing surfaces from the drive axial end having a smaller diameter than a next furthest one of the cylindrical bearing surfaces from the drive axial end, the bearing stem having a central opening therethrough co-axial with the drive axis.

An earth working machine (), for example a road milling machine (), recycler, stabilizer, or surface miner, having a propelling unit () and a machine frame () carried by the propelling unit (), comprises a working apparatus () for earth working. Provision is made that the earth working machine () comprises, on an underside () of the machine frame () facing toward the supporting substrate of the machine (), a maintenance door () that is movable between a raised operational readiness position and a lowered maintenance position and that comprises, on its inner side () that faces away from the supporting substrate (U) in the operational readiness position, at least one functional configuration () that assists a maintenance operation.

Earth working machine having a maintenance door offering storage space

An earth working machine includes a drive configuration and a working apparatus releasably connected together by a bolt component. A bolting moment bracing arrangement is connected or connectable in bolting moment-transferring fashion to the bolt component, and includes a bracing region that is embodied for bolting moment-bracing abutment in a bracing bolting direction against a counterpart bracing region, the drive configuration being embodied to be driven to rotate, in a rotation direction codirectional with the bracing bolting direction, while the bracing region is in abutment against the counterpart bracing region.

An earth working machine () includes a machine body () having a machine frame () and a drive configuration (), rotationally drivable relative to the machine frame () around a drive axis (A), to which configuration a working apparatus () embodied for earth working is releasably connected in torque-transferring fashion, in an operating position operational for earth working, for rotation together around the drive axis (A), such that when the connection is released, the working apparatus () is removable from the operating position in an axial direction relative to the drive configuration () for deinstallation from the drive configuration () and, for installation on the drive configuration, is conveyable into the operating position in an axial direction relative to the drive configuration ().

Earth working machine whose rotatable working apparatus, for installation on the machine, is conveyable into its operating position using an onboard actuator

An earth working machine () includes a machine body () having a machine frame () and a drive configuration (), rotationally drivable relative to the machine frame (), and to which configuration a working apparatus () embodied for earth working is releasably connected in torque-transferring fashion, in an operating position, for rotation together around a drive axis (A), such that when the connection is released, the working apparatus () is removable from the operating position in an axial direction relative to the drive configuration () for deinstallation from the drive configuration () and, for installation on the drive configuration (), is conveyable into the operating position in an axial direction relative to the drive configuration (), an actuator () being provided which is embodied to move the working apparatus () out of the operating position when the connection is released.

Earth working machine whose working apparatus is displaceable out of its operating position using an onboard actuator

In a method for transporting a large milling machine self-propelled by ground-engaging units and comprising a machine frame adjustable in height by means of lifting devices using a tractor unit with a fifth-wheel coupling for a semi-trailer couplable behind the tractor unit as seen in the direction of travel, the following steps are specified: 

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Dattenberg, Germany

Hardy Wilhelmi