Abstract: A self-propelled building machine, especially a road cutting machine or a surface miner, has a machine frame and a chassis, comprising running gears resting on the ground. In addition, the present invention relates to a method for operating such a building machine. In an operating mode for adjusting the working depth of the working device the imposed weight applied by the building machine on the running gear is measured, whereby depending on the imposed weight either a controlled or an uncontrolled lowering of the building machine is indicated. A measuring device comprises a sensor for measuring the weight imposed by the building machine on at least one of the running gears.

Abstract: In an automotive milling machine, with a machine frame with longitudinal axis, with a chassis with wheels or tracked travelling drive units which support the machine frame, with a controller for the travelling, steering and milling operation, with a height-adjustable working drum, with a slewable last or single transport conveyor of specified length arranged in front of or behind the working drum as seen in the direction of travel of the milling machine, where the transport conveyor is, as a minimum, slewable sideways about an essentially vertical first axis under a slewing angle, it is provided for the following features to be achieved: the controller comprises a detection and control system which, as a minimum, detects the steering angle of the steering controller for the chassis or, as a minimum, the steering angle of the steering controller and the distance traveled or the travel speed, and controls the slewing angle of the transport conveyor in accordance with this no less than one parameter.

Abstract: A road milling machine includes a rear wheel or track mounted on a pivot arm such that the wheel or track is movable between a first outer end position projecting laterally relative to the machine frame, and a second inner end position which permits milling close to an edge. A travel drive of the rear wheel or track provides a driving force to move the wheel or track between the end positions.

Abstract: A self-propelled construction machine for working roadways or surfaces includes a machine frame supported by ground engaging units, and a milling drum which can rotate about an axis of rotation extending transverse to the advance direction of the construction machine. The construction machine includes a cooling device for spraying the milling tools of the milling drum with a coolant from a coolant reservoir. The cooling device is designed such that at least one coolant jet extending parallel to the axis of rotation of the milling drum is produced. A single coolant jet which extends transverse to the working direction of the milling drum is sufficient for cooling the milling tools. When the milling drum is rotating, the milling tools of the milling drum pass through the coolant jet successively.

Abstract: A road milling machine with a machine frame supported by a chassis with one front axle and one rear axle with wheels or crawler tracks, with a milling drum mounted at the machine frame to rotate between the rear wheels, where said milling drum ends nearly flush with a zero-clearance side, it is provided that the wheels or crawler tracks of the front axle as seen in the direction of travel are arranged offset from one another in such a fashion that one of the front wheels or tracks is arranged in front of the other front wheel or crawler track as seen in the direction of travel.

Abstract: In an automotive construction machine, with a machine frame (4) with preferably vertically arranged lateral outer walls (5), a milling drum (6) mounted in the machine frame (4) for working a ground surface or traffic surface (8), and with an operator's platform (10), it is provided that the operator's platform (10) is moveable on the machine frame (4) transversely to the direction of travel, and is moveable outwards beyond the lateral outer walls (5) of the machine frame (4), that the machine frame (4) is provided with a guide (18) for the operator's platform (10) acting transversely to the direction of travel, and that the guide (18) projects laterally either not at all or just slightly beyond the outer walls (5).

Abstract: The invention relates to a self-propelled road-milling machine for doing work on surfacings on the ground, and in particular carriageways. The road-milling machine according to the invention is characterized by a signalling arrangement which has at least one control unit for the entry of at least two different states of operation by the driver of the road-milling machine and at least one visual indicator or display unit to indicate or display for the driver of the transporting vehicle the at least two states of operation which are preset with the control unit by the driver of the road-milling machine. The first state of operation may be a request for the transporting vehicle to be braked or stopped and the second state of operation may be a request for the transporting vehicle to be started or to continue travelling. In a preferred embodiment of the visual indicator or display unit, the request for braking or stopping is shown as a cross and the request for starting or continued travel as an arrow.

Abstract: A road cutting machine has a machine frame and at least one left-hand running gear and at least one right-hand running gear. A device is provided for raising or lowering the running gears resting on the ground, in relation to the machine frame, and also a control unit is provided for activating the device for raising and lowering the running gears, so that the height of the running gears can be adjusted to the machine frame. The control unit comprises sensors for detecting changes in the height of the ground to be covered by the running gears in relation to the machine frame, whereby the control unit contains a control mode for initiating actions in the control system for adjusting the height of the running gears. The control unit is configured in such a way in the control mode that if a change is detected in the height of the ground, the respective running gear or the respective running gears are raised or lowered so as to compensate any lateral tilting due to a change in the height of the ground.

Abstract: The invention relates to a building machine, in particular a road-building machine, having running gear and a chassis which is fitted with a working unit which has one or more implements. The building machine has a stored-program control device for controlling the implements of the working unit and a device for displaying operational variables or operational states in the form of characters or images. In addition to the stored-program control device, the building machine has a centralized data processing device which is embodied in such a way that operational variables or operational states can be displayed as characters or images with the device for displaying operational variables or operational states.

Abstract: In an automotive milling machine (1a,1b), with a height-adjustable machine frame (2), with a controller (3) for the travelling and milling operation, with a working drum, with a slewable transport conveyor device arranged in front of or behind the working drum as seen in the direction of travel of the milling machine (1a,1b), where the last or single transport conveyor of the transport conveyor device (12) as seen in the direction of transport is slewable sideways, relative to the machine frame (2), about an essentially vertical axis (23) under a slewing angle, and about an axis (21) orthogonal to the axis (23) under an elevation angle, and where the transport conveyor (12) discharges the milled material at a specified conveying speed onto a point of impingement (16) on a loading surface (15) of a transport vehicle (10), it is provided for the following features to be achieved: the controller (3) comprises a detection and control system (24) which continuously locates the alterable position of the loading sur

Abstract: A construction machine apparatus includes a plurality of ground engaging supports, a machine frame supported from the ground engaging supports and a milling drum supported from the machine frame. A milling drum location detection system is configured to determine a drum location in an external reference system. A location indicator system includes a memory configured to store information identifying a location of one or more areas to be avoided in the external reference system, and a controller configured to compare the drum location to the location of the one or more areas to be avoided, and to provide an output corresponding to a proximity of the milling drum to the location of the one or more areas to be avoided.

Abstract: A self-propelled building machine, especially a road cutting machine or a surface miner, has a machine frame and a chassis, comprising running gears resting on the ground. In addition, the present invention relates to a method for operating such a building machine. In an operating mode for adjusting the working depth of the working device the imposed weight applied by the building machine on the running gear is measured, whereby depending on the imposed weight either a controlled or an uncontrolled lowering of the building machine is indicated. A measuring device comprises a sensor for measuring the weight imposed by the building machine on at least one of the running gears.

Abstract: An automotive milling machine, for the treatment of road surfaces or ground surfaces includes a chassis comprising front and rear suspension axles with a total of no less than three suspension units with a machine frame supported by the chassis, with lifting columns between the suspension units and the machine frame at no less than two suspension units of a suspension axle, said suspension units being transversely offset from one another in the direction of travel, and with a working drum. The working drum is adjustable to a position for driving in travel mode with the working drum raised and, in the adjusted position of the working drum at a distance from the road surface or ground surface, the lifting columns are suitable for coupling to a spring device.

Abstract: A self-propelling construction machine has a machine frame, an operating drum and a drum housing enclosing the operating drum. The drum housing is closed off by a front and/or rear sealing element and/or lateral sealing element. The construction machine has a mechanism for raising and lowering the at least one sealing element. A measuring unit is configured so that the measuring unit measures the forces acting on the sealing element when the sealing element encounters an obstacle. A control unit generates a control signal for raising the sealing element when the force measured by the measuring unit is larger than a predetermined limit value, so that the sealing element is raised.

Abstract: A road milling machine includes a rear wheel or track mounted on a pivot arm such that the wheel or track is movable between a first outer end position projecting laterally relative to the machine frame, and a second inner end position which permits milling close to an edge. A travel drive of the rear wheel or track provides a driving force to move the wheel or track between the end positions.

Abstract: In a self-propelled construction machine, in particular cold milling machine, recycler or surface miner, for working ground surfaces, comprising a milling drum supported at a machine frame and a conveying device arranged at the machine frame which accepts the milled-off material from the milling drum during the working operation and, on a continuously revolving first transport belt, unloads it, in conveying direction, onto a point of discharge at a discharge end along a parabolic trajectory, it is provided for the following features to be achieved: as a minimum, the last section of the conveying device as seen in conveying direction comprises no less than one continuously revolving cover belt arranged above the transport belt, said cover belt extending essentially parallel to the transport belt and resting against the milled-off material on the transport belt at least in a partial section of the length of the transport belt.

Abstract: A civil engineering machine has a machine control unit configured to determine data which defines the position and/or orientation of a reference point on the civil engineering machine in relation to a reference system independent of the position and orientation of the civil engineering machine. A geometrical shape to be produced on the ground is preset in either a machine control unit or a field rover control unit. The field rover is used to determine a position of at least one identifiable point of the preset geometrical shape in the independent reference system. Curve data defining a desired curve in the independent reference system, corresponding to the preset shape, is determined at least partially on the basis of the position of the at least one identifiable point of the preset geometrical shape in the independent reference system.

Abstract: The invention relates to a self-propelled road-milling machine for doing work on surfacings on the ground, and in particular carriageways. The road-milling machine according to the invention is characterised by a signalling arrangement which has at least one control unit for the entry of at least two different states of operation by the driver of the road-milling machine and at least one visual indicator or display unit to indicate or display for the driver of the transporting vehicle the at least two states of operation which are preset with the control unit by the driver of the road-milling machine. The first state of operation may be a request for the transporting vehicle to be braked or stopped and the second state of operation may be a request for the transporting vehicle to be started or to continue travelling. In a preferred embodiment of the visual indicator or display unit, the request for braking or stopping is shown as a cross and the request for starting or continued travel as an arrow.

Abstract: A road construction machine comprising height adjustment devices which adjust the position of the plane of the machine frame in accordance with control signals, where the leveling device measures the distance of the ground surface to the machine frame and controls the height adjustment devices so the machine frame is movable at an adjusted orthogonal distance to the surface; a transmitter is arranged at the machine frame in a rigid fashion, and a receiver is movable, parallel to and synchronously with the machine frame, or vice versa, where the transmitter emits a measuring beam representative of a reference plane, the measuring beam being detectable by the receiver and representing either a plane extending parallel to the machine frame or a plane extending parallel to the ground surface, where the current distance of the machine frame to the current reference location is measurable from the detected position of the reference plane.

Abstract: A method is provided for measuring the milling depth of a road milling machine, the machine being operative to mill a ground surface with a milling roller lowered to a milling depth to create a milling track, the machine including at least one side plate located to at least one side of the milling roller to engage an untreated ground surface, and the machine including a stripping plate operative to be lowered onto the milling track generated by the milling roller. The method includes measuring the milling depth of the milling track, the measuring including detecting a measurement value of a ground engaging sensor engaging the milling track.