초록 ▼

A vibratory concrete screed includes a frame having first and second ends and a length equal to or greater than the width of plastic concrete to be finished. A screed blade is coupled to the screed frame and engages the full width of the plastic concrete. Vibration generating structure is coupled to

A vibratory concrete screed includes a frame having first and second ends and a length equal to or greater than the width of plastic concrete to be finished. A screed blade is coupled to the screed frame and engages the full width of the plastic concrete. Vibration generating structure is coupled to the screed for vibrating the screed blade. A concrete spreading device is coupled to the screed frame to level the surface of the plastic concrete and to evenly distribute excess plastic concrete in front of the screed blade. The concrete spreading device includes a grading device having either an auger or a grading blade or both an auger and a grading blade. A carriage maintains the grading device at a desired relative elevation to the screed blade and translates the grading device back and forth along the length of the screed frame. The side to side translation of the grading device along the screed frame laterally distributes the excess concrete and displaces the concrete forward and away from the screed blade. Forward translation of the screed along the concrete forms together with the side to side translations of the carriage along the length of the screed frame levels and finishes the surface of the plastic concrete.

대표청구항 ▼

A vibratory concrete screed for finishing the irregular surface of an area of plastic concrete lying between first and second spaced apart, generally parallel forms, the spacing between the first and second forms defining the width of the plastic concrete, said screed comprising: a. a triangular tru

A vibratory concrete screed for finishing the irregular surface of an area of plastic concrete lying between first and second spaced apart, generally parallel forms, the spacing between the first and second forms defining the width of the plastic concrete, said screed comprising: a. a triangular truss frame having first and second ends and a length equal to or greater than the width of the plastic concrete; b. a screed blade coupled to said frame; c. means coupled to said frame for translating said frame along the length of the plastic concrete; d. means for vibrating said screed blade; e. concrete spreading means coupled to said screed frame for leveling the surface of and evenly distributing plastic concrete in front of said screed blade, including: i. grading means for contacting the surface of the concrete; ii. carriage means for maintaining said grading means at a predetermined elevation in front of said screed blade and for translating said grading means in either a first or a second direction along said screed frame; whereby the grading means levels the irregular surface of the plastic concrete and moves excess concrete forward and away from said screed blade as said carrige means translates said grading means in first and second directions along the length of said screed frame.