A new and improved method and apparatus for use in conjunction with the free floating paving screed used for road paving is disclosed. The method of forming a bituminous mixture into a smooth flat paved mat comprising some areas with a given nominal mat density and some selected areas with a predeterminedly higher mat density is described wherein problems posed by a reduced compaction ratio occurring subsequently to paving the mat where the roller drum bridges over recesses in the subbase are addressed. The modified paving screed described employs a new adjustable screed plate that allows localized areas of increased angle of attack and a device to increased material entry density in localized areas in front of a screed plate leading edge. Either method is used to create an increase in mat density in the desired area. The method and apparatus teach that by pairing differences in compaction ratio that inherently occur due to subbase irregularities with correspondingly predetermined and different mat densities in the paved mat, a good consistent final density can be achieved notwithstanding the limitations of the compaction rolling. A forward looking vision system is described that identifies subbase recesses, a digital controller quantifies the density increase required, and a GPS system maps locations where the mat density increases are to be applied.

A system, method, and apparatus for leveling concrete and similar materials. The automated, remotely controllable screed for leveling concrete can be used on any kind of sub-grade, it is lightweight and can be moved quickly to any location or floor level. It is highly accurate, and less labor intensive compared with the lightweight devices. It is all electrical mechanical. It is low noise. It is remotely controlled.

Systems and methods for controlling a construction machine, such as an asphalt paver, having a tractor, an implement coupled to the tractor via at least one tow arm, and a mast. A position sensor mounted to the mast may detect a geospatial position of the mast. An angle sensor may detect at least one angle associated with the mast. A control point may be calculated based on the geospatial position and the at least one angle. The control point may be spatially offset from a vector formed by a lengthwise extension of the mast. The at least one tow arm may be moved based on a comparison between the control point and a target point.

A method for cleaning a screed of a paving machine includes activating a vibration generator to induce a vibration into the screed such that the screed is excited at a resonant frequency of the screed to cause dislodgement of a residual build-up of a material from the screed.

A method for cleaning a screed of a paving machine includes activating a vibration generator to induce a vibration into the screed such that the screed is excited at a resonant frequency of the screed to cause dislodgement of a residual build-up of a material from the screed.

A system for a screed assembly of a paving machine can include a plurality of screed plates, a screed frame, a first plurality of sensors, a second plurality of sensors, a device and a controller. The device can be configured to create a physical phenomenon that is detectable by the first plurality and the second plurality of sensors. The controller can be configured to, based on a detected position of each of the rust plurality of sensors and each of the second plurality of sensors relative to the physical phenomenon, determine a relative position between the first screed plate and the second screed plate including a degree of parallelism between the major surface of the first screed plate and the major surface of the second screed plate.

A paving system includes a paving machine and a controller. The paving machine includes a drive assembly, a paving material delivery system, including a hopper, a conveyor assembly, an auger, and a screed assembly, and at least one material sensor configured to monitor a delivery of paving material from the hopper to the auger by the conveyor assembly. The controller is coupled to the at least one material sensor and the conveyor assembly to control the delivery of paving material from the hopper to a ground surface.

A system for a screed assembly of a paving machine is disclosed. The system can include a plurality of screed plates, a screed frame, a first plurality of sensors, a second plurality of sensors, a device and a controller. The device can be configured to create a physical phenomenon that is detectable by the first plurality and the second plurality of sensors. The controller can be configured to, based on a detected position of each of the rust plurality of sensors and each of the second plurality of sensors relative to the physical phenomenon, determine a relative position between the first screed plate and the second screed plate including a degree of parallelism between the major surface of the first screed plate and the major surface of the second screed plate.

A screed extension for a main screed frame of a paving machine includes an upper frame and a lower frame disposed below the upper frame. A height adjustment system is disposed between, and coupled to, the upper and lower frames. The height adjustment system is configured to moveably couple the lower frame to the upper frame. The height adjustment system includes an upper mounting plate affixed to the upper frame, and a lower mounting plate affixed to the lower frame. The height adjustment system also includes a first tube that is located between and coupled to the upper and lower mounting plates such that a first end of the first tube is configured to establish an interference fit with the upper mounting plate and a second end of the first tube is configured to establish an interference fit with the lower mounting plate.

A screed extension for a main screed frame of a paving machine includes an upper frame and a lower frame disposed below the upper frame. A height adjustment system is disposed between, and coupled to, the upper and lower frames. The height adjustment system is configured to moveably couple the lower frame to the upper frame. The height adjustment system includes an upper mounting plate affixed to the upper frame, and a lower mounting plate affixed to the lower frame. The height adjustment system also includes a first tube that is located between and coupled to the upper and lower mounting plates such that a first end of the first tube is configured to establish an interference fit with the upper mounting plate and a second end of the first tube is configured to establish an interference fit with the lower mounting plate.