Screeding apparatus and method

Details Screeding apparatus and method Screeding apparatus and method

E - Fixed Constructions

01

C

E01C 19/00 (2006.01) E01C 19/40 (2006.01)

Patent

CA 2005242

An apparatus and method are disclosed for pivoting a screed assembly during screeding of placed and/or poured, uncured concrete or like loose, spreadable materials to maintain proper screeding contact by the screeding assembly with the concrete or like material by counteracting the force of concrete or other like material acting against the screed assembly as it is moved along the concrete. The apparatus includes a support, preferably of the led type, a boom and boom mount, and a pivot between the boom and the screed assembly. The axis of the pivot extends generally perpendicular to the screeding direction in which the screed assembly is moved. A power source, such as a pair of fluid cylinders, rotates the screed about the pivot axis, preferably in response to an electro-hydraulic leveling sensor mounted on the screed. The lateral incline of the screed perpendicular to the screeding direction may be controlled about additional pivot axes orthogonal to the first. A power operated elevation control is preferably responsive to a fixed laser beam reference plane positioned externally of the screed assembly. The boom is telescoping and has multiple sections for extending and retracting the screeding assembly with respect to the support. The screed preferably includes a vibration assembly vibrationally isolated from the remainder of the screed for smoothing the concrete.

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