The invention relates to a road paver or a feeder with a machine frame, a travel carriage powered by a drive unit, and a material hopper with a material retention device arranged in the front in the operating direction, the material retention device comprising a fastening device and a retention element fastened to the material hopper through the fastening device, the material retention device having an overload protection device, which is designed in such a way that in the event of an overload applied thereto the retention element is detached the from material hopper and the fastening device, the latter remaining on the hopper, without damage. The invention also relates to a material retention device of such a road paver or feeder and a method for protecting a material retention device of such a road paver or feeder.

The invention relates to a road paver or a feeder with a machine frame, a travel carriage driven by a drive unit, and a material hopper arranged in the front in the operating direction on the road paver or the feeder, the material hopper comprising a hopper bottom and side walls extending in the operating direction, at least one approach guidance aid protruding beyond the hopper bottom and the side walls in the operating direction being arranged on the road paver or the feeder in the edge region of the material hopper transversely to the operating direction. The invention further relates to an approach guidance aid of such a road paver or feeder.

A system for controlling an engagement of a material supply machine with a paving machine is provided. The system includes one or more sensor(s) mounted on material supply machine and/or the paving machine and are configured to detect a position and distance of paving machine with respect to material supply machine. The sensor(s) further detect a relative speed between the two machines. A controller autonomously controls speed of material supply machine based on detected relative speed when distance is less than threshold. The speed of material supply machine is controlled to match speed of the paving machine. The controller also autonomously controls steering of material supply machine based on detected position of leading end of paving machine to align material supply machine with leading end of paving machine until the material supply machine engages with leading end of paving machine.

A system for controlling an engagement of a material supply machine with a paving machine is provided. The system includes one or more sensor(s) mounted on material supply machine and/or the paving machine and are configured to detect a position and distance of paving machine with respect to material supply machine. The sensor(s) further detect a relative speed between the two machines. A controller autonomously controls speed of material supply machine based on detected relative speed when distance is less than threshold. The speed of material supply machine is controlled to match speed of the paving machine. The controller also autonomously controls steering of material supply machine based on detected position of leading end of paving machine to align material supply machine with leading end of paving machine until the material supply machine engages with leading end of paving machine.

A method of operating a vehicle feeding material to a road finishing machine. The vehicle includes a vehicle retarding system controllable to retard the vehicle, and processing circuitry coupled to the vehicle retarding system. The method includes determining, by the processing circuitry, a slope inclination of a downward sloping road surface to be paved by the road finishing machine; determining, by the processing circuitry, a deceleration level of the vehicle for operating the vehicle at the downward sloping road surface while obtaining a mechanical connection between the vehicle and the road finishing machine when the road finishing machine paves the downward sloping road surface; determining, by the processing circuitry, a retardation power level of the vehicle retarding system based on the slope inclination of the downward sloping road surface for obtaining the deceleration level; and controlling, by the processing circuitry, the vehicle retarding system to apply the retardation power level for obtaining the deceleration level.

In the method for transferring material between a truck and a driving road construction vehicle, a distance between the driving road construction vehicle and a truck driving in front of the road construction vehicle without contact to the road construction vehicle truck is kept constant by a distance control system. While the distance between the driving road construction vehicle and the truck is kept constant, material is being dumped from a loading cavity of the truck into a material hopper of the road construction vehicle. The road construction vehicle is a road finishing machine or a feeder for a road finishing machine.

A road-finishing machine for producing a paving layer from a laying material or a charger vehicle for supplying the road-finishing machine with a laying material. The road-making machine comprises a material bunker, and a pushing means fixed forward of the material bunker at a chassis, such that pushing rollers of the pushing means may dock to rear tires of a truck. The pushing rollers comprise a pair of first pushing rollers mountable in a first position in a seat of a traverse of the pushing means. Either the pushing means is expandable by at least one changeable attachment to which the first pushing rollers may be mounted in a second position further forward with respect to the first position, or the pushing means comprises a pair of second pushing rollers which may be selectively positioned forward of the first pushing rollers.

Vehicle coupling assemblies suitable for facilitating a resilient coupling between a rear vehicle and a vehicle wheel on a front vehicle may include a coupling assembly arm. The coupling assembly arm may be resiliently length-variable responsive to application of a longitudinal extension force on the coupling assembly arm. A wheel engagement member may include an engagement member body rotatably carried by the coupling assembly arm. The engagement member body may be suitably sized and configured for engagement with the vehicle wheel on the front vehicle in substantially concentric relationship with respect to the vehicle wheel.

A road-making machine is provided in the form of a road-finishing machine for producing a paving layer from a laying material or a charger vehicle for supplying the road-finishing machine with a laying material. The road-making machine comprises a material bunker, and a pushing means fixed forward of the material bunker at a chassis, such that pushing rollers of the pushing means may dock to rear tires of a truck. The pushing rollers comprise a pair of first pushing rollers mountable in a first position in a seat of a traverse of the pushing means. Either the pushing means is expandable by at least one changeable attachment to which the first pushing rollers may be mounted in a second position further forward with respect to the first position, or the pushing means comprises a pair of second pushing rollers which may be selectively positioned forward of the first pushing rollers.

A road-making machine is provided in the form of a road-finishing machine for producing a paving layer from a laying material or a charger vehicle for supplying the road-finishing machine with a laying material. The road-making machine comprises a material bunker, and a pushing means fixed forward of the material bunker at a chassis, such that pushing rollers of the pushing means may dock to rear tires of a truck. The pushing rollers comprise a pair of first pushing rollers mountable in a first position in a seat of a traverse of the pushing means. Either the pushing means is expandable by at least one changeable attachment to which the first pushing rollers may be mounted in a second position further forward with respect to the first position, or the pushing means comprises a pair of second pushing rollers which may be selectively positioned forward of the first pushing rollers.