Steel structure machining clamp with protection function

The utility model discloses a steel structure machining clamp with a protection function, which comprises a table body, a first mounting plate, two fixing plates and a second mounting plate are fixedly mounted on the table body, a rotating shaft is rotatably mounted between the table body and the first mounting plate, a plurality of mounting blocks are fixedly sleeved on the rotating shaft, and the rotating shaft is fixedly sleeved on the rotating shaft. A clamping plate is fixedly mounted on the corresponding mounting blocks, and a plurality of clamping springs are fixedly mounted between theclamping plate and the corresponding fixing plate. The clamping device has the advantages that by means of cooperation of the movable lead screw and the two rotatable clamping plates, a clamping andfixing effect can be well applied to steel structures of different sizes, and meanwhile through cooperation of the clamping spring, the rubber block, the first rubber pad and the slidable clamping block, the overall clamping e