Wheeled concrete screeding device
DCFirst Claim
1. A wheeled concrete screeding device for screeding uncured concrete, said wheeled concrete screeding device comprising:
- a wheeled unit having at least two wheels for movably supporting a frame portion of said wheeled unit, said frame portion having a forward end and a rearward end, wherein said wheeled unit is movable through uncured concrete in a screeding direction;
a screed head supported at said rearward end of said frame portion and following behind said wheeled unit when said wheeled unit is moved in said screeding direction, said screed head comprising a grade establishing element and a vibratable member;
wherein said grade establishing element is generally vertically adjustable responsive to a signal from a laser receiver disposed at said screed head to establish a struck-off surface of the uncured concrete at a desired grade when said wheeled unit is moved in said screeding direction; and
wherein said vibratable member is adjustably attached at a rearward end of said grade establishing element and wherein said vibratable member at least partially floats behind said grade establishing element on the struck-off surface of the uncured concrete and is at least partially supported at the struck-off surface of the uncured concrete as said wheeled unit is moved in said screeding direction.
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Abstract
A wheeled concrete screeding device includes a wheeled unit having wheels for movably supporting a frame portion, and a screed head supported at the frame portion and following behind the wheeled unit when the wheeled unit is moved in a screeding direction. The screed head includes a grade establishing element and a vibratable member. The grade establishing element is generally vertically adjustable responsive to a signal from a laser receiver disposed at the screed head to establish a struck-off surface of the uncured concrete at a desired grade. The vibratable member is adjustably attached at the grade establishing element and the vibratable member at least partially floats behind the grade establishing element on the struck-off surface of the uncured concrete and is at least partially supported at the struck-off surface of the uncured concrete as the wheeled unit is moved in the screeding direction.
88 Citations
20 Claims
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1. A wheeled concrete screeding device for screeding uncured concrete, said wheeled concrete screeding device comprising:
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a wheeled unit having at least two wheels for movably supporting a frame portion of said wheeled unit, said frame portion having a forward end and a rearward end, wherein said wheeled unit is movable through uncured concrete in a screeding direction; a screed head supported at said rearward end of said frame portion and following behind said wheeled unit when said wheeled unit is moved in said screeding direction, said screed head comprising a grade establishing element and a vibratable member; wherein said grade establishing element is generally vertically adjustable responsive to a signal from a laser receiver disposed at said screed head to establish a struck-off surface of the uncured concrete at a desired grade when said wheeled unit is moved in said screeding direction; and wherein said vibratable member is adjustably attached at a rearward end of said grade establishing element and wherein said vibratable member at least partially floats behind said grade establishing element on the struck-off surface of the uncured concrete and is at least partially supported at the struck-off surface of the uncured concrete as said wheeled unit is moved in said screeding direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A wheeled concrete screeding device for screeding uncured concrete, said wheeled concrete screeding device comprising:
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an articulatable wheeled unit having a front frame portion movably supported by front wheels and a rear frame portion movably supported by rear wheels, wherein said front frame portion is articulatable relative to said rear frame portion about a generally vertical pivot axis when said wheeled unit is supported at a generally horizontal support surface, wherein said articulatable wheeled unit is movable through uncured concrete in a screeding direction; a screed head supported at a rearward end of said rear frame portion so that said screed head follows behind said articulatable wheeled unit when said articulatable wheeled unit is moved in said screeding direction, said screed head comprising a grade establishing element and a vibratable member, wherein said grade establishing element comprises a plow member; wherein said grade establishing element is generally vertically adjustable relative to said rear frame portion responsive to a signal from a laser receiver disposed at said screed head to establish a struck-off surface of the uncured concrete at a desired grade when said articulatable wheeled unit is moved in said screeding direction; wherein said vibratable member is pivotally attached at a rearward end of said grade establishing element, and wherein said vibratable member at least partially floats behind said grade establishing element on the struck-off surface of the uncured concrete and is at least partially supported at the struck-off surface of the uncured concrete as said articulatable wheeled unit is moved in said screeding direction. - View Dependent Claims (14, 15)
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16. A method of establishing a desired grade of an uncured concrete surface, said method comprising:
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providing a wheeled concrete working device having a wheeled support having a frame portion and a pair of wheels rotatably mounted at said frame portion, wherein said wheeled support comprises a plow assembly mounted at said frame portion, said plow assembly including at least one plow member for engaging the uncured concrete; moving said wheeled concrete working device in a screeding direction; adjusting an elevation of said plow member in response to a signal from a laser receiver mounted at said plow assembly to establish a desired grade of the concrete when said wheeled concrete working device is moved in said screeding direction; detecting a surface irregularity of the subgrade upon which the wheels travel and at a location forward of either of said wheels and in the screeding direction of travel of said wheeled concrete working device; reducing the speed of said wheeled concrete working device in said screeding direction in response to a detection of a surface irregularity; and controlling at least one of said frame portion and said plow assembly to substantially maintain said plow assembly at a desired orientation when at least one of said wheels engages the detected surface irregularity. - View Dependent Claims (17, 18, 19, 20)
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Specification