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3. 发明授权

US6129480A Bi-directional concrete finishing machine 失效
标题翻译：双向混凝土整理机
公开(公告)号：US6129480A
公开(公告)日：2000-10-10
申请号：US276763
申请日：1999-03-26
申请人： John Paul Cunningham
发明人： John Paul Cunningham
IPC分类号： E01C19/29 , E01C19/26
CPC分类号： E01C19/29
摘要： A bi-directional concrete finishing machine finishes a concrete surface in both a forward and a reverse direction, and includes a leading finishing roller and a trailing finishing roller which rotate in a first direction, and two tramming rollers disposed between the leading and trailing finishing rollers, which rotate in a second direction, such that the tramming rollers can be driven in the second direction to move the concrete finishing machine forward and, with the trailing finishing roller disengaged, the leading finishing roller can rotate in the first direction and level the concrete to grade. When the machine is reversed by driving the tramming rollers in the first direction, the leading finishing roller is disengaged, and the trailing finishing roller is driven in the second direction and levels the concrete to grade. Another embodiment of the machine includes a concrete auger for roughing the concrete and spreading it out evenly, which is added as a fifth roller to the machine. Still another embodiment includes a steering mechanism which is extended from under the machine and allows the machine to turn in any direction. A lifting cradle lifts the concrete finishing machine into place over the unfinished concrete.
摘要翻译：双向混凝土整理机在前后方向上完成混凝土表面，并且包括沿着第一方向旋转的前端精加工辊和拖尾精加工辊，以及设置在前后精轧辊之间的两个辊道辊，其沿第二方向旋转，使得可以在第二方向上驱动带车辊，以使混凝土整理机向前移动，并且随着后整理辊分离，导向精整辊可以在第一方向上旋转并使混凝土平整评分。当通过沿第一方向驱动打桩辊使机器反转时，前端精加工辊脱离，后退精轧辊在第二方向上被驱动并使混凝土平整。机器的另一个实施例包括一个混凝土螺旋推运器，用于对混凝土进行粗加工并均匀地将其分散，作为第五个滚轮加入到机器中。另一个实施例包括从机器下方延伸并允许机器在任何方向转动的转向机构。起重吊架将混凝土整理机提升到未完成的混凝土上。

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