Based on the existing structure of

Based on the existing structure of frame and tool carrier of the hydraulic swing-type plate shears QC12Y-4x2500 and the actual shearing process, uniform load and moving load are applied and analyzed by using load step in the finite element analyses. Through comparing the two status, it is indicated that the moving load arrangement more fully reflect the impact from shearing process on its performance. Experimental data of five testing points of throat fillet are extracted and contrasted with the analysis results which are later verified to be reliable.This swing-type plate shears can be normally used under the existing structure of frame and tool carrier. In order to improve the plate shears properties and reduce weight of the plate shears, the thickness of frame wallboard and the tool carrier wing-boards can be appropriately decreased, and reinforcing plates can be welded to partly strengthen the throat fillet and shear cylinder contact position of tool carrier.In conclusion, the research in this paper can provide a reference for size design, finite element analysis as well as structural improvements of plate shears, and has engineering reference value for improving shearing quality and guiding the actual production.