US 2016/0237629 A1 · Paver Transition Mark Reduction

Abstract

A paving machine for reducing transition marks in a mat. The paving machine may comprise a frame, a tow arm, a screed assembly, a sensor and a controller. The screed assembly includes a main screed plate and an extension plate. The main screed plate is configured to pave a first surface section of the mat. The extension plate includes an extension trailing edge having an inner end. The extension plate is configured to pave a second surface section of the mat. The sensor is configured to sense transition marks in the mat proximal to an intersection between the first and second surface sections and to transmit data indicative of such to the controller. The controller may be configured to determine from the data received from the sensor when the inner end is disposed above or below the first plane, and move the inner end to the first plane.

Claims20

Dependent claims

A paving machine for paving a mat on a base, the mat having a first surface section contained in a first plane and a second surface section contained in a second plane, the second surface section adjacent to the first surface section, the paving machine comprising:

a frame;
a tow arm connected to the frame and pivotable about a pivot point;
a screed assembly connected to the frame by the tow arm, the screed assembly including a main screed plate and an extension plate, the main screed plate configured to pave the first surface section of the mat, the extension plate including an extension trailing edge having an inner end, the extension plate configured to pave the second surface section of the mat;
a sensor mounted on the screed assembly and configured to sense transition marks in the mat proximal to an intersection between the first and second surface sections and further configured to transmit data indicative of the transition marks to a controller;
and
the controller configured to, while the paving machine is paving:
determine from the data received from the sensor when the inner end is disposed above or below the first plane;
and
move the inner end to the first plane.

6 more elements

a frame;
a tow arm connected to the frame and pivotable about a pivot point;
a screed assembly connected to the frame by the tow arm, the screed assembly including a main screed plate and an extension plate, the main screed plate configured to pave the first surface section of the mat, the extension plate including an extension trailing edge having an initial inner end, the extension plate configured to pave the second surface section of the mat;
a plurality of sensors mounted on the screed assembly and configured to sense transition marks in the mat proximal to an intersection between the first and second surface sections and further configured to transmit data indicative of the transition marks to a controller;
a frame inclinometer mounted on the frame and configured to measure a frame slope in relation to a horizontal plane at a first point in time and a second point in time;
a screed inclinometer mounted on the screed assembly and configured to measure a screed slope of the main screed plate in relation to the horizontal plane at the first point in time and the second point in time;
and
the controller configured to, while the paving machine is paving:
calculate a frame slope change and a screed slope change;
determine whether the frame slope change is different than the screed slope change;
when the first plane and the second plane are parallel and the frame slope change is different than the screed slope change, move the extension trailing edge to the first plane;
and
when the second plane is disposed at an angle to the first plane and the frame slope change is different than the screed slope change, move the initial inner end to the first plane.

10 more elements

Dependencies are inferred from the claim text.

Paver Transition Mark Reduction

Life of this patent

Paver Transition Mark Reduction

Life of this patent

Abstract

Claims20