| 主权项 |
1. Apparatus for cutting concrete curbs or other fixed structures both when the vehicle is moving or when the vehicle is stopped, said apparatus comprising in combination:
a vehicle for moving relative to a concrete curb or other fixed structure, said vehicle including a vehicle framework; a primary saw support structure mounted for movement relative to said vehicle framework; first prime mover structure for moving said primary saw support structure relative to said vehicle framework; an articulated saw support including second prime mover structure connected to said primary saw support structure; and a saw having a rotary saw blade attached to said articulated saw support, actuation of said first prime mover structure operable to move the primary saw support structure and the saw toward or away from said curb or other fixed structure, and said second prime mover structure operable to move said saw to selectively alternatively position the saw blade in horizontal or vertical planes or canted relative to one or both of said horizontal and vertical planes, said primary saw support structure completely supporting said articulated saw support and said saw when said apparatus is cutting concrete curbs or other fixed structures and including a pivoted framework having a double-ended rigid upper framework portion including a pair of spaced upper elongated members having upper elongated member inner and outer ends and attached together between said upper elongated member inner and outer ends, a rigid double-ended lower framework portion comprising a pair of spaced lower elongated members having lower elongated member inner and outer ends, and a front plate, said pivoted framework pivotally connected to said vehicle framework by pivots located on the upper elongated member inner ends and on the lower elongated member inner ends, and said front plate pivotally connected by pivots located on the upper elongated member outer ends and the lower elongated member outer ends to the upper and lower elongated member outer ends, said upper and lower elongated members being parallel, said first prime mover structure including at least one upwardly extending first hydraulic cylinder pivotally connected to said double-ended rigid upper framework portion between the upper elongated member inner and outer ends for pivoting said pivoted framework about the pivots at said upper elongated member inner ends to selectively alternatively raise or lower said articulated saw support and said saw, said primary saw support structure additionally including a hollow housing carried by said pivoted framework and an elongated support member within said hollow housing and axially slidable relative to said housing and having an elongated support member distal end, and said first prime mover structure additionally including a second hydraulic cylinder for selectively alternatively extending or retracting said elongated support member relative to said housing, said housing having a housing distal end and said first prime mover structure additionally including a third hydraulic cylinder for alternatively raising or lowering said distal end relative to said framework. |
