초록 ▼

An extensible screed assembly for a bituminous paver incorporates a pair of screed extensions which are movable laterally outwards of the paver in order to pave roadway widths greater than that of the main screed. The screed extensions feature means by which the attack angle of each extension can be

An extensible screed assembly for a bituminous paver incorporates a pair of screed extensions which are movable laterally outwards of the paver in order to pave roadway widths greater than that of the main screed. The screed extensions feature means by which the attack angle of each extension can be adjusted relative to the attack angle of the main screed and by which the alignment of each extension can also be adjusted relative to that of the main screed.

대표청구항 ▼

In an extensible screed assembly for use with a bituminous paving machine having a tractor unit with a pair of screed pull arms pivoted at their forward ends to the sides of the tractor unit and extending rearwardly therefrom, the screed assembly being attachable transversely across the rear ends of

In an extensible screed assembly for use with a bituminous paving machine having a tractor unit with a pair of screed pull arms pivoted at their forward ends to the sides of the tractor unit and extending rearwardly therefrom, the screed assembly being attachable transversely across the rear ends of the screed pull arms and having first inclination adjusting means for pivoting the entire screed assembly relative to the screed pull arms about a screed assembly inclination axis transversely of the screed pull arms effective to adjust the fore-and-aft inclination of the entire screed assembly relative to a roadway, the screed assembly including a main screed and a pair of screed extensions offset rearwardly of the main screed, each of the screed extensions being longitudinally moveable in opposite directions relative to the main screed effective to adjust the overall width of the screed assembly, the main screed and screed extensions having underlying planar screeding surfaces, the improvement comprising: second inclination adjusting means pivoting each of the screed extensions relative to the main screed about screed extension inclination axes transversely of the screed pull arms effective to selectively adjust on the run the fore-and-aft inclination of each of said screed extension surfaces relative to the fore-and-aft inclination of said main screed surface.