Grinding device for steel plate groove before welding

The invention relates to the technical field of steel structure construction, in particular to a grinding device for a steel plate groove before welding. The grinding device is characterized by comprising a movable platform, feeding mechanisms and fixing devices, wherein, the movable platform serves as a rack of the whole grinding device, the feeding mechanisms and the fixing devices are arranged on the movable platform, the grinding device further comprises grinding machines, the grinding machines are fixed to the feeding mechanisms through the fixing devices, and the feeding mechanisms drive the grinding machines to move up and down to complete grinding of the steel plate groove; and the two feeding mechanisms are symmetrically arranged in an inverted mode, so that the two grinding machines are driven to move oppositely, and the two faces of a steel plate are ground. Compared with the prior art, the device is small in size, convenient to move and capable of adapting to grinding work of steel plate grooves i