Rolling-cut transverse shearing device

The invention relates to a rolling-cut transverse shearing device which comprises a vertical shearing mechanism and a drive assembly connected with the vertical shearing mechanism in a driving mode. The vertical shearing mechanism comprises a support, an upper transmission roller, a lower transmission roller, an upper shearing blade arranged on the upper transmission roller, and a lower shearing blade arranged on the lower transmission roller. The upper transmission roller and the lower transmission roller are arranged on the upper part and the lower part of the support respectively. The lower shearing blade is horizontally arranged on the top of the lower transmission roller. The upper shearing blade is arranged at the bottom of the upper transmission roller. The included angle between the blade edge of the upper shearing blade and the axis of the upper transmission roller ranges from 1.5 degrees to 3 degrees. A measurement roller which can measure the conveying speed and the length of a plate strip and provided with an encoder is arranged on the portion, close to the feed end, of the vertical shearing mechanism. The cutting depths of the upper shearing blade and the lower shearing blade can be consistent, it is ensured that the maximum shearing force value can reach 20 T, the accuracy of the size of a notch of the plate strip is improved, the upper shearing blade does not horizontally slide, abrasion to the shearing blades can be effectively reduced, the service life of the shearing blades can be prolonged, bending deformation on the fracture surface of the plate strip can be avoided, and the shearing quality can be improved.