Online maintenance device for trimming shear

The utility model provides an online trimming shear maintenance device applied to the technical field of cold rolling, a front sliding rail (2) and a rear sliding rail (3) are arranged on a device frame (1) of the online trimming shear maintenance device, a front cylinder (4) is arranged above the front sliding rail (2), the front cylinder (4) is connected with a front gate plate (5) movably mounted on the front sliding rail (2), and a rear cylinder (6) is arranged above the rear sliding rail (3). The online maintenance device of the edge trimmer is simple in structure, capable of effectivelyisolating strip steel in operation from maintenance personnel of the edge trimmer on the premise that normal operation of the strip steel is not affected, capable of achieving online maintenance of the edge trimmer, high in maintenance efficiency and low in maintenance cost, and the maintenance cost of the edge trimmer is lowered. And online maintenance operation safety of maintenance personnel isensured. 本实用新型提供一种应用于冷轧技术