Wirtgen Gmbh

Wirtgen America, Inc.

Peter Busley

Dieter Simons

Olaf Gaertner

Cyrus Barimani

Günter Hähn

Günter Tewes

Christian Berning

Herbert Ley

Karsten Buhr

Guenter Haehn

Thomas Mannebach

Thomas Kramer

Thomas Lehnert

Burkhard Frank

Andreas Salz

Stephan Drumm

Dieter Bungarten

Armin Montermann

Herbert Lange

Guenter Tewes

Walter Grueber

Marius Kloft

Walter Grüber

Chistian Berning

Disclosed is an automotive road construction machine, particularly a recycler or a cold stripping machine, comprising an engine frame that is supported by a chassis, a working roller which is stationarily or pivotally mounted on the engine frame and is used for machining a ground surface or road surface. The chassis is provided with wheels or tracked running gears which are connected to the engine frame via lifting column and are vertically adjustable relative to the engine frame. Each individually vertically adjustable lifting column is equipped with a device for measuring the actual vertical state of the lifting column.

Automotive construction machine, as well as lifting column for a construction machine

In a wear pad for a crawler track () of a tracked vehicle, wherein the wear pad () comprises an outer tread surface (), and a bottom side () opposite the tread surface () from which at least one protrusion () protrudes, the wear pad () comprises fastening means () for fastening to the crawler track (), it is specified for the following features to be achieved: that the protrusion of the wear pad () on the bottom side () features a contour which extends, at least partially, at an angle deviating from the longitudinal direction () of the wear pad ().

Wear pad for a crawler track of a tracked vehicle, crawler track and construction machine

A construction machine, in particular road milling machine, recycler or stabilizer, with a machine frame () that is carried by a chassis () with a working drum () and a drive train () comprising at the least a drive engine (), a traction mechanism () for the mechanical drive of the working drum () with a drive element, an output element and a traction element (), a device () for switching the torque between the drive engine () and working drum (), and device () for driving at least one hydraulic pump; it is provided that elements of the drive train () are divided into at least two groups, the first group () shows at least the drive engine (), the second group () shows at least the drive element () of the traction mechanism, and where the first and the second groups () are connected to one another via an articulated coupling device ().

Construction machine, in particular road milling machine, recycler or stabilizer, as well as drive train for construction machines of this type

A road construction machine includes a machine frame and two front and two rear crawler track units. Each crawler track unit includes a piston-cylinder unit. A central pressure limiting valve communicates a hydraulic pressure source with a hydraulic supply line. The hydraulic supply line communicates the central pressure limiting valve with the piston-cylinder units of all four crawler tracks. A common pressure accumulator is communicated with all four of the piston-cylinder units.

Road construction machine, crawler track unit of a road construction machine, as well as method for tensioning a chain of a crawler track unit

A self-propelled construction machine, comprises a machine frame, on which a working unit is arranged, and comprises a drive unit for driving the working unit. An additive, in particular a urea solution for operating an exhaust gas treatment system, is provided in an operating material tank which is integrated in the fuel tank or water tank of the construction machine. The integration of the operating material tank in the fuel tank or water tank does not necessitate any modifications to the machine frame. The dimensions of the construction machine can also remain unchanged, since the fuel tank does not take up any extra space on the machine frame if the dimensions of the fuel tank or water tank are maintained.

Self-propelled construction machine

The invention relates to a positioning arrangement for fitting an interchangeable milling assembly of a preset working width below the vertically adjustable chassis of a road milling machine, which chassis is carried on track-laying units. A vehicle carried on a plurality of wheels has a unit for receiving the milling assembly. The positioning arrangement has a handling chassis which can be lengthened in the longitudinal direction and to which the wheels are fixed. In a lowered position, the positioning arrangement, with the milling assembly resting on it, can be driven below the chassis of the road milling machine. In a raised position, the milling assembly can be fitted to the road milling machine.

Positioning arrangement for fitting an interchangeable milling assembly of a road-building machine

The road milling machine according to the invention comprises a cleaning device which has a cleaning unit arranged in front of the work roller in the working direction. The cleaning unit ensures that the surface of the terrain over which the wheels or running gears travel is clear of material. As a result, an optimum milling result is always achieved. The invention takes effect in particular when using small millers which have at least one rear wheel or running gear which can be moved into an inner working position in relation to a longitudinal side of the machine frame and into an outer working position in relation to a longitudinal side of the machine frame. In this preferred embodiment, the cleaning device comprises a pivot device which is designed in such a way that the cleaning unit can be moved into an inner working position in relation to a longitudinal side of the machine frame and into an outer working position in relation to a longitudinal side of the machine frame. In the inner or outer working position, the cleaning unit is arranged on the same track as the rear wheel or running gear which can be moved into the inner or outer working position. This ensures that the track of the rear wheel or running gear is clear of milled material or other dirt, wherein the cleaning unit does not protrude too far beyond the rear wheel or running gear.

Self-propelled road milling machine

A construction machine for the treatment of ground surfaces includes a machine frame and a work drum supported from the machine frame and including exchangeable tools fastened to the work drum. A drive line includes a work motor and a transmission connecting the work motor to the work drum. The transmission includes a belt drive and a reduction gear. An auxiliary drive is mounted at a location on the construction machine and includes an auxiliary drive motor. The auxiliary drive has a first configuration in which the auxiliary drive motor is coupled to the work drum via at least a portion of the transmission to rotate the work drum. The auxiliary drive has a second configuration in which the auxiliary drive remains mounted at the location on the construction machine and the work drum can be rotated by the work motor.

Auxiliary drive

A construction machine for the treatment of ground surfaces includes a machine frame, a drive motor, a work drum supported from the machine frame and including exchangeable tools fastened to the work drum, a belt drive and an auxiliary drive. The belt drive includes a motor-side pulley connected to the drive motor, a drum-side pulley connected to the work drum, and at least one drive belt connecting the motor-side pulley to the drum-side pulley. The auxiliary drive may be permanently coupled to the belt drive, or the auxiliary drive may include an adjustment mechanism for moving the auxiliary drive between a coupled and an uncoupled position.

A self-propelled construction machine comprises a machine frame, on which a working unit is arranged, and comprises a drive unit for driving the working unit. An additive, in particular a urea solution for operating an exhaust gas treatment system, is provided in an operating material tank which is integrated in the fuel tank or water tank of the construction machine. The integration of the operating material tank in the fuel tank or water tank does not necessitate any modifications to the machine frame. The dimensions of the construction machine can also remain unchanged, since the fuel tank does not take up any extra space on the machine frame if the dimensions of the fuel tank or water tank are maintained.

In an automotive road milling machine () for milling ground surfaces (), with a machine frame (), a milling drum () with a quick-change system arranged at the machine frame () in a drum housing (), a driving device () for driving the milling drum (), a reduction gear () arranged between the driving device () and the milling drum (), where the milling drum () is arranged between drum housing walls () of the drum housing () running orthogonally to the axis of rotation of the milling drum (), where the quick-change system is provided with a basic drum body () and at least one milling tube element () capable of being pushed onto the basic drum body (), where the drum housing wall () opposite the drive-side drum housing wall () is easily removable for the quick exchange of alternatively usable milling tube elements (), it is provided for the following features to be achieved: the housing () of the reduction gear () is attached to the machine frame () in a torsionally rigid fashion, inside the machine frame (), between the driving device () and the drum housing wall () at the drum housing ().

Growing community of inventors

Linz/Rhein, Germany

Peter Busley