Liebherr-components Biberach Gmbh

Roland Widmann

Johannes Halder

Stefan Duelli

Johann Lis

Marijo Mendes

Philipp Marquard

The invention relates to a drive device for a construction machine, in particular for a trench cutter, comprising a connection support and a wheel support, which is rotatably supported on the connection support via at least one rolling bearing and which can be rotationally driven relative to the connection support by a drive motor via at least one gear stage, wherein the gear wheel of the gear stage, the wheel being arranged within the connection support and meshing or being in rolling engagement with at least one other gear wheel, is movably and/or tiltably supported in the radial direction relative to the connection support by a flexible and/or movable bearing element so as to be rotationally fixed to the connection support and/or to a bearing shield rigidly connected thereto.

Trench cutter drive with decoupled inner wheel/integrated bearing

The present invention relates in general to slurry wall cutters for cutting slurry walls in specialist foundation engineering. The invention relates in particular to the cutting wheel assembly for such a slurry wall cutter (), comprising a rotationally drivable cutter hub () and a cutting wheel () which can be detachably fastened to the cutter hub for conjoint rotation. According to the invention, the cutting wheel and the cutter hub are clamped against one another at the end faces thereof and are interlockingly secured to one another in order to transmit the high operating forces non-frictionally or at least not only frictionally. According to the invention, the end faces of the cutting wheel and the cutter hub that can be placed against one another are provided with lateral teeth () which mesh with one another for conjoint rotation. The meshing pair of lateral teeth allows the cutter hub and the cutting wheel to be interlockingly held relative to one another for conjoint rotation. At the same time, the end faces lying against one another can also transmit axial forces such that the cutting wheel is untiltably held in place.

Cutting wheel assembly for a slurry wall cutter

The invention relates to a drive device for a diaphragm wall cutter, with a hydraulic motor, a gear unit, to which at least one cutting wheel of the diaphragm wall cutter can be connected on the output side, and a drive shaft which connects the hydraulic motor to the gear unit, wherein the drive shaft is mounted by way of at least one drive shaft bearing which is arranged between the hydraulic motor and the gear unit, wherein the drive shaft bearing has a lubricant feed line which is connected to a leakage discharge line of the hydraulic motor and/or to the hydraulic circuit in order to operate the hydraulic motor, and is configured to lubricate the drive shaft bearing with hydraulic oil.

Drive device for a diaphragm wall cutter

A drive device for a diaphragm wall cutter, having a drive housing and/or gear housing, which encloses an interior for accommodating drive and/or gear elements and comprises two housing parts which are rotatable relative to one another and sealed off from one another by a sealing device, and having a pressure equalization device for pressure equalization between the interior and the surroundings. A diaphragm wall cutter having such a drive device. The pressure equalization device comprises at least one intermediate chamber, which is pressurized and is sealed off from the interior by an inner seal and off from the surroundings by an outer seal. By virtue of such a sealed intermediate chamber that can be considerably smaller in terms of volume than the interior, the pressurization for pressure equalization between interior and surroundings is considerably simpler.

The invention relates to a drive device, in particular in the form of a pivot drive for material-transferring devices such as mining excavators, comprising an engine, a transmission that is connected to the engine and is lubricated by a transmission lubricant, and a circulation filter device for filtering the transmission lubricant in circulation, wherein the circulation filter device has at least one circulation pump for circulating the transmission lubricant. According to the invention, the circulation pump is integrated into the transmission, wherein the pump wheel of the circulation pump is configured as a peripheral wheel and is arranged for conjoint rotation with a transmission element.

Drive device with circulation filtering

The present invention relates to a drive apparatus for a wheel of a work machine, having an electric motor which comprises a rotor which is rotatably received in a stator and which is supported at bearing plates which are arranged at the end side and between which coil head spaces are provided for receiving coil heads, wherein a cooling apparatus for cooling of the stator and the rotor comprises at least one coolant path through the coil head spaces which is suppliable with coolant from a peripheral side via a coolant inlet preferably provided at a peripheral side.

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Unlingen, Germany

Roland Widmann