2results about How to "Improve laying quality" patented technology

This utility model discloses a municipal road smoothing machine, including a fixed base. Two sets of first threaded rings are embedded on the upper surface of the fixed base, and an adjustment mechanism is connected to the inner ring of each first threaded ring. A U-shaped scraper is connected to the bottom surface of the fixed base, and a set of equally spaced scraper needles are connected to the bottom surface of the fixed base. A groove is formed in the inner top wall of the fixed base, and a drive motor is installed inside the groove. This device first uses the scraper and scraper needles to not only level the paved concrete initially, but also to break up sand holes and air bubbles inside the concrete, thus making the concrete surface roughly flat. Then, the drive motor drives the connecting rod and the trowel to rotate, allowing the trowel to smooth the concrete surface. This not only makes the concrete pavement smoother but also improves the paving quality of the concrete pavement.

This arc-shaped picking-up toothed rod self-rotating straw gathering unit belongs to agricultural machinery. It features a right and left ring frame symmetrically fixed to a Π-shaped frame. First and second pushing bosses and first and second racks are fixed to the inner wall of the right ring frame. Right and left annular limiting track grooves are respectively opened on the outer circumference of the right and left ring frames. A rotary drive bushing is positioned at the center of the right and left ring frames. A rod seat is fixed to the rotary drive bushing, and the rod seat is connected to the arc-shaped picking-up toothed rod via a connecting shaft and a shaft seat. The two ends of a tension spring are connected to the rod seat and the connecting shaft, respectively. An annular plate, a cylindrical gear, and a square seat plate are sequentially installed on the arc-shaped picking-up toothed rod. Four anti-rotation limiting posts are symmetrically positioned at the four corners of the inner side of the square seat plate. This unit achieves self-rotation adjustment of the arc-shaped picking-up toothed rod's orientation during straw picking and unloading. It has a unique and reasonable structure, high operating efficiency, good laying quality, few malfunctions, and reliable use.