In a self-propelled construction machine (1), in particular road milling machine or surface miner, for working a ground pavement, comprising a milling drum (10), which is mounted in a machine frame, wherein a milling cut develops during milling of the ground pavement with the milling drum (10), wherein the milling drum (10) comprises a first and a second end side, at least a first measuring device, which is arranged next to the first end side of the milling drum (10) and measures the distance of the machine frame relative to the ground pavement next to the first end side of the milling drum (10), at least a second measuring device, which is arranged next to the second end side of the milling drum (10) and measures the distance of the machine frame relative to the ground pavement next to the second end side of the milling drum (10), and a control device (40) for controlling the milling depth, wherein, in a first milling operation, the control device (40) determines the milling depth by means of measurements performed by the first and the second measuring device, it is provided for the following features to be achieved: a second milling operation is detectable by means of the control device (40), in which the milling drum (10) is positioned on an as yet non-milled milling cut that is arranged next to a previously milled milling cut, wherein the control device (40), as soon as the second milling operation is detected, uses measurements performed by at least a third measuring device in lieu of the first and/or the second measuring device for determining the milling depth.

A control system for a work vehicle, includes a controller. The controller includes a processor a memory device communicatively coupled to the processor, such that the memory device stores instructions that cause the processor to receive a first control signal indicative of performing relocation operations. Furthermore, the instructions cause the processor to instruct an actuator assembly to drive a chassis of the work vehicle in an upward direction relative to wheels of the work vehicle in response to receiving the first control signal, such that a front stabilizer and a rear stabilizer are disengaged from a ground.

The invention relates to a ground milling machine, in particular a road milling machine, comprising a machine frame, traveling devices connected to the machine frame, a drive engine, a ground milling device with a milling drum box open towards the ground and a milling drum mounted so as to be rotatable about a rotational axis inside the milling drum box, wherein the ground milling device is adjustable by means of an adjusting device between a raised transport position and a milling position engaging the ground, a conveyor device with at least one primary conveyor belt, with which milled material produced inside the milling drum box can be transported away from the ground milling device, the primary conveyor belt including a receiving side and a discharge side, a belt holder arranged in front of the ground milling device in the working direction of the ground milling machine, in which the receiving side of the primary conveyor belt is mounted, and an operator platform, from which an operator controls the ground milling machine in operation, as well as to a method for operating a ground milling machine. The invention facilitates an optimized handling of milling area obstacles located in the area of the milling track.

A steering mechanism and guidance system for a milling attachment device provides steering capability without impeding cutting depth control. The steering mechanism has at least one wheel that is rotated by an actuating mechanism such as an extending cylinder, synchronized actuators, or the like. The steering mechanism may be integrated with depth control by using a parallelogrammic structure with pivot points to assist in the depth control or may operate independent of and without impeding depth control.

A steering mechanism and guidance system for a milling attachment device provides steering capability without impeding cutting depth control. The steering mechanism has at least one wheel that is rotated by an actuating mechanism such as an extending cylinder, synchronized actuators, or the like. The steering mechanism may be integrated with depth control by using a parallelogrammic structure with pivot points to assist in the depth control or may operate independent of and without impeding depth control.

A road finisher includes an undercarriage, a chassis, a hopper, a paving screed, and a lifting device for lifting the chassis relative to the undercarriage at least in a rear region of the road finisher. A locking element can be moved by a locking element actuator between a locked state, in which the locking element mechanically locks the chassis at a predefined transport height relative to the undercarriage, and a release state, in which the mechanical locking of the chassis is released at the transport height.

A milling machine includes a milling assembly having a housing to which left and right end gates are attached, a controller, a right front lifting column, a left front lifting column and a rear lifting column. Elevation sensors are located at the front and rear of each of the end gates. The controller is operatively attached to the elevation sensors and to linear actuators within the lifting columns of the milling machine. The elevation sensor that is located at the front end of the right end gate will provide feedback to control the position of the right front lifting column, and the elevation sensor that is located at the front end of the left end gate will provide feedback to control the position of the left front lifting column. The elevation sensors that are located at the rear ends of the end gates are available, as selected by the operator, to provide feedback to control the positions of one of the right and left front lifting columns, as well as the rear lifting column.

A hydraulic circuit for a lifting system of a propulsion system for a construction machine having multiple independent propulsors can comprise a plurality of hydraulic cylinders each comprising a piston and a rod for coupling to a propulsor, a plurality of fluid lines coupling each of the plurality of hydraulic cylinders in series, wherein movement of one piston hydraulically causes movement of a subsequent piston in an opposite direction, and a plurality of flow control devices positioned within the plurality of fluid lines such that a flow control device is positioned between adjacent hydraulic cylinders, each flow control device comprising an intermediate body configured to smooth flow of hydraulic fluid between adjacent hydraulic cylinders without directly coupling one cylinder to another.

A machine for road work can comprise a frame, a plurality of ground engaging units, a plurality of vertically moveable legs, each leg connecting one of the plurality of ground engaging units to the frame, a pair of spatial sensors, such as global navigation satellite system (GNSS) sensors, and a controller configured to, in response to a three-dimensional signal received from each of the spatial sensors, activate at least some of the plurality of vertically moveable legs.

A machine for processing a road construction material includes two or more extendable support units, where each of the two or more extendable support units have a first segment coupled to the frame and a second segment configured to contact a surface to support the frame. The machine also includes an orientation sensor that is configured to measure an orientation of the frame. The machine further includes a distance sensor that configured to measure a distance from the frame to the surface. The machine additionally includes a controller configured to determine, based on the orientation and the distance, a position of at least one extendable support unit of the two or more extendable support units.