57results about How to "Realize upgrading" patented technology

The invention provides an eccentric tangential-flow primary threshing and separating device of a rice combination harvester. A tangential-flow threshing roller, a concave plate sieve and a top cover are installed on a rack; a support shaft and transmission shaft of the tangential-flow threshing roller penetrate through a left plate and a right plate respectively, an eccentric shaft is located between the left plate and the right plate, and the two ends of the eccentric shaft are connected with the transmission shaft and the support shaft respectively; the center of the transmission shaft and the center of the support shaft both coincide with the rotating center of the threshing roller, so that a certain eccentricity exists between the center of the eccentric shaft and the rotating center of the threshing roller, and a certain angle exists between the horizontal plane and the connecting line of the two centers. When the threshing roller works, a threshing element begins to stretch out above a feeding opening of the tangential-flow threshing roller and draws back into the threshing roller near a longitudinal axial flow feeding opening, back-drawing of rice by the threshing element is effectively reduced, and the problem of unsmooth feeding at the intersection place between tangential flow and longitudinal flow is solved; meanwhile, the partial resistance torque produced by materials is balanced by the torque produced by the centre-of-gravity shift of the tangential-flow roller, the vibration of the tangential-flow threshing roller is reduced, the work performance is improved, and the service life is prolonged.

The invention provides a steel for an anti-corrosion automobile concrete mixing tank and a preparation method thereof. The chemical composition and mass percentage of the steel are: C: 0.15-0.20%; Si≤0.01%; Mn≤1.50%; S≤0.001%; P≤0.010%; Al: 0.01-0.06%; O: 0.0010-0.0020%; N: 0.0010-0.0030%; Ca: 0.0020-0.0040%; Cr: 0.50-1.50%; Ti: 0.20-0.40%; ~0.35%; Cu: 0.19~0.40%, the rest is Fe and other unavoidable impurities. The preparation method includes S1, steelmaking; S1.1, smelting; S1.2, LF ladle furnace refining; S1.3, continuous casting; S2, hot rolling; S2.1, heating; S2.2, controlled rolling; S2 .3, layer cooling; S2.4, coiling.