초록 ▼

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 r

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.

대표청구항 ▼

[ What is claimed is:] [1.] A concrete finishing machine for finishing concrete on a surface to be paved, comprising:a leading finishing roller which rotates in one of a first direction and a second direction opposite to said first direction;a trailing finishing roller which rotates in one of said f

[ What is claimed is:] [1.] A concrete finishing machine for finishing concrete on a surface to be paved, comprising:a leading finishing roller which rotates in one of a first direction and a second direction opposite to said first direction;a trailing finishing roller which rotates in one of said first direction and said second direction;a first tramming roller which rotates in one of said first direction and second direction, and disposed between said leading finishing roller and said trailing finishing roller;a second tramming roller which rotates in one of said first direction and said second direction and which is disposed adjacent said first tramming roller and disposed between said leading finishing roller and said trailing finishing roller; anda drive mechanism which drives said leading finishing roller, said trailing finishing roller, said first tramming roller and said second tramming roller;wherein said leading finishing roller and said trailing finishing roller rotate in a common direction which is opposite to said rotation direction of said first tramming roller and said second tramming roller.