| 摘要 |
A concrete tool assembly (10) used on a concrete surface (16) includes a surfacing apparatus (12) including a frame (18) and one or more trowel assemblies (34A, 34B). Each trowel assembly (34A, 34B) includes one or more trowels (54). The concrete tool assembly (10) also includes a remote control unit (14) that controls movement of the trowel assemblies (34A, 34B) relative to the concrete surface (16). The remote control unit (14) can be mechanically and/or electrically isolated from the surfacing apparatus (12). The surfacing apparatus (12) can be radio-controlled by the remote control unit (14). The surfacing apparatus (12) can also include a plurality of shafts (74A, 74B) that are each coupled to a corresponding trowel assembly (34B, 34B). A portion of each shaft (74A, 74B) can pivot relative to the frame (18). Further, the surfacing apparatus (12) can include a controller (24) that receives commands from the remote control unit (14). The controller (24) can control movement of at least one of the trowel assemblies (34A, 34B) relative to the surface (16). Moreover, the surfacing apparatus (12) can include a feedback device (30) that monitors movement of the trowel assemblies (34A, 34B), and provides feedback to the controller (24). The surfacing apparatus (12) can also include a pitch adjuster (162) that simultaneously adjusts the pitch of each of the trowels (54) relative to the surface (16).
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