Clamp device for welding connecting beam plate of steel frame of hoisting equipment

The utility model discloses a fixture device for welding a connecting beam plate of a steel frame of hoisting equipment, which comprises a bottom frame, at least two supporting seats are fixed on the top surface of a top plate of the bottom frame, horizontal lifting plates are arranged above the top plates of the supporting seats, and a connecting beam to be processed is placed on the top surfaces of all the horizontal lifting plates. A rear pressing plate is fixed to the top face of the rear portion of the horizontal lifting plate, and the rear wall face of the connecting beam abuts against the front wall face of the rear pressing plate. A left fixing plate is fixed to the top face of the left portion of the bottom frame, a left limiting plate is arranged on the left fixing plate, and the left limiting plate abuts against the left end face of the connecting beam. The welding position of the connecting plate can be determined and spot welding fixation can be carried out only by setting the position of the ext