2results about How to "Overcome unevenness" patented technology

The utility model relates to the technical field of welding, and concretely discloses a device for controlling the welding gap of a T-shaped joint of a steel structure bridge, which comprises a base body, a lifting device and a clamping mechanism, the lifting device is arranged on the base body, the clamping mechanism is arranged at the bottom of the lifting device, an annular structure bracket is arranged on the base body, a plurality of bracket supporting legs are welded on the annular structure bracket, and a variable magnetic force support is arranged at the bottom of the bracket supporting leg; the clamping mechanism comprises a mounting block, a sliding groove is arranged on the mounting block, two sliding wheels are slidably arranged in the sliding groove, a clamp connecting rod is arranged on the sliding wheel, and the clamp connecting rod is connected with a rib plate clamp; the device further comprises a screw rod, the screw threads at the two ends of the screw rod are opposite in rotation direction, and the screw rod is threadedly connected with the two clamp connecting rods. The utility model has the advantages of avoiding welding leakage, controlling welding seam deformation, reducing internal defects, improving welding quality, reducing welding cost, being easy to operate, avoiding damage to the base material and the like compared with the traditional process.

This invention discloses a method for preparing an electrochromic ion storage layer thin film, comprising the following steps: S1: reacting terephthalaldehyde or a terephthalaldehyde derivative with 2-acetylpyridine or a 2-acetylpyridine derivative to generate 1,4-bis[1,5-dioxo-1,5-bis(2-pyridyl)pentan-3-yl]benzene or a derivative thereof; then reacting it with ammonium acetate to obtain an organic ligand; reacting it with RuCl2(DMSO)4 to obtain a metal supramolecular polymer; S2: mixing it uniformly with a solvent and dimethylformamide to obtain an electrochemical deposition precursor solution; S3: depositing it at a constant potential via electrochemical deposition to obtain the electrochromic ion storage layer thin film. The thin film prepared by this invention not only has advantages such as fast response speed, high coloring efficiency, and wide optical modulation range, but also has good cycling stability.