Recently, an invention patent known as "A Quick Grinding and Cleaning Machine" declared by the company has been authorized by China National Intellectual Property Administration.

The machine consists of walking car, electric motor, transmission shaft, grinding wheel, and buffer device. This invention patent is based on the Qianlidi Extra Large Bridge Works of the Jinshi Expressway, mainly targeting welding spatter, rust and other oxides that are difficult to clean around the weld seam of the steel bridge beam. By operating the walking car, the grinding wheel contacts the surface of the workpiece to quickly clean impurities on the surface of the workpiece, thus solving the problems of long labor time, high labor intensity, and uneven surface in traditional manual grinding machines. At the same time, it improves the efficiency of workpiece polishing, effectively avoids the harm of high-temperature iron filings to human body, and improves the operating environment for workers.