Powered strike-off plow

A wheeled concrete working device movable over a surface of uncured concrete and operable to establish a desired grade of the uncured concrete surface, said wheeled concrete working device comprising:

• a wheeled support selectively movable in a forward direction and a rearward direction, said wheeled support comprising a forward frame portion supported by at least one front wheel and a rearward frame portion pivotally attached to said forward frame portion and supported by at least one rear wheel;
• a plow assembly mounted to said forward frame portion, said plow assembly including at least one plow member for engaging and establishing the desired grade of the concrete when said wheeled support is moved in said rearward direction, said wheeled concrete working device being operable in response to a signal from a laser receiver mounted at said plow assembly to adjust an elevation of said plow member to establish the desired grade of the concrete when said wheeled support is moved in said rearward direction;
• and
• a user input that is adjustable by an operator of said wheeled concrete working device to adjust a down pressure of said plow assembly at the concrete when said wheeled support is moved in said rearward direction, wherein said wheeled support includes a sensor at said rear frame portion that is operable to detect a tilt of said rear frame portion about a longitudinal axis of said rear frame portion, the detected tilt being indicative of one of said at least one rear wheel engaging a surface irregularity at the subgrade upon which the wheels travel, said wheeled concrete working device being operable to reduce the rearward speed of said wheeled support in response to a detection of a surface irregularity by said sensor.

A wheeled concrete working device movable over a surface of uncured concrete and operable to establish a desired grade of the uncured concrete surface, said wheeled concrete working device comprising:

• a wheeled support selectively movable in a forward direction and a rearward direction, said wheeled support comprising a forward frame portion supported by at least one front wheel and a rearward frame portion pivotally attached to said forward frame portion and supported by at least one rear wheel;
• a plow assembly mounted to said forward frame portion, said plow assembly including at least one plow member for engaging and establishing the desired grade of the concrete when said wheeled support is moved in said rearward direction, said wheeled concrete working device being operable in response to a signal from a laser receiver mounted at said plow assembly to adjust an elevation of said plow member to establish the desired grade of the concrete when said wheeled support is moved in said rearward direction;
• a user input that is adjustable by an operator of said wheeled concrete working device to adjust a down pressure of said plow assembly at the concrete when said wheeled support is moved in said rearward direction;
• and
• wherein said plow assembly is attached to a support arm that is attached to said forward frame portion at a location rearward of said front wheels, said support arm extending from said location and forwardly of said front wheels, and wherein said plow assembly and said support arm are pivotable relative to said forward frame portion about a generally vertical pivot axis and about a generally horizontal pivot axis, said generally horizontal pivot axis extending laterally and generally transverse to the direction of travel of said wheeled support.

A wheeled concrete working device movable over a surface of uncured concrete and operable to establish a desired grade of the uncured concrete surface, said wheeled concrete working device comprising:

• a wheeled support selectively movable in a forward direction and a rearward direction, said wheeled support comprising a forward frame portion supported by at least one front wheel and a rearward frame portion pivotally attached to said forward frame portion and supported by at least one rear wheel;
• a plow assembly mounted to said forward frame portion, said plow assembly including at least one plow member for engaging and establishing the desired grade of the concrete when said wheeled support is moved in said rearward direction;
• said plow assembly including a vibrating member for vibrating and smoothing the concrete after said plow member establishes the desired grade when said wheeled support is moved in the rearward direction;
• said wheeled concrete working device being operable in response to a signal from a laser receiver mounted at said plow assembly to adjust an elevation of said plow member to establish the desired grade of the concrete when said wheeled support is moved in said rearward direction;
• and
• a user input that is adjustable by an operator of said wheeled concrete working device to adjust a down pressure of said vibrating member at the concrete when said wheeled support is moved in said rearward direction, said user input being actuatable by the operator to urge said vibrating member downward relative to said wheeled support to increase the down pressure of said vibrating member during rearward movement of said wheeled support.

A wheeled concrete working device movable over a surface of uncured concrete and operable to establish a desired grade of the uncured concrete surface, said wheeled concrete working device comprising:

• a wheeled support selectively movable in a forward direction and rearward direction, said wheeled support comprising a forward frame portion supported by at least one front wheel and a rearward frame portion pivotally attached to said forward frame portion and supported by at least one rear wheel;
• a plow assembly mounted to said forward frame portion, said plow assembly including at least one plow member for engaging and establishing the desired grade of the concrete when said wheeled support is moved in said rearward direction;
• said plow assembly including a vibrating member for vibrating and smoothing the concrete after said plow member establishes the desired grade when said wheeled support is moved in the rearward direction;
• said wheeled concrete working device being operable in response to a signal from a laser receiver mounted at said plow assembly to adjust an elevation of said plow member to establish the desired grade of the concrete when said wheeled support is moved in said rearward direction;
• and
• a user input that is adjustable by an operator of said wheeled concrete working device to adjust a down pressure of said vibrating member at the concrete when said wheeled support is moved in said rearward direction, wherein said wheeled support includes a sensor at said rear frame portion that is operable to detect a tilt of said rear frame portion about a longitudinal axis of said rear frame portion, the detected tilt being indicative of one of said at least one rear wheel engaging a surface irregularity at the subgrade upon which the wheels travel, said wheeled concrete working device being operable to reduce the rearward speed of said wheeled support in response to a detection of a surface irregularity by said sensor.

A wheeled concrete working device movable over a surface of uncured concrete and operable to establish a desired grade of the uncured concrete surface, said wheeled concrete working device comprising:

• a wheeled support selectively movable in a forward direction and a rearward direction, said wheeled support comprising a forward frame portion supported by at least one front wheel and a rearward frame portion pivotally attached to said forward frame portion and supported by at least one rear wheel;
• a plow assembly mounted to said forward frame portion, said plow assembly including at least one plow member for engaging and establishing the desired grade of the concrete when said wheeled support is moved in said rearward direction;
• said plow assembly including a vibrating member for vibrating and smoothing the concrete after said plow member establishes the desired grade when said wheeled support is moved in the rearward direction;
• said wheeled concrete working device being operable in response to a signal from a laser receiver mounted at said plow assembly to adjust an elevation of said plow member to establish the desired grade of the concrete when said wheeled support is moved in said rearward direction;
• a user input that is adjustable by an operator of said wheeled concrete working device to adjust a down pressure of said vibrating member at the concrete when said wheeled support is moved in said rearward direction;
• and
• wherein said plow assembly is attached to a support arm that is attached to said forward frame portion at a location rearward of said front wheels, said support arm extending from said location and forwardly of said front wheels, and wherein said plow assembly and said support arm are pivotable relative to said forward frame portion about a generally vertical pivot axis and about a generally horizontal pivot axis, said generally horizontal pivot axis extending laterally and generally transverse to the direction of travel of said wheeled support.