Object clamping structure for fixed crane

The object clamping structure for the fixed crane comprises a connecting rod, a circular ring and a fixed column, limiting rods are fixedly connected to the middles of the interiors of the two ends of the fixed column, two clamping rods are connected to the opposite ends of the limiting rods in an inserted mode, and arc blocks are evenly and fixedly connected to the edges of the two ends of the fixed column; the clamping device has the advantages that the arc plate and the clamping plate are controlled to rotate by rotating the clamping rod, an object can be conveniently clamped and fixed in a matched mode, and the clamping device is convenient to use, simple in structure, convenient to operate and high in practicability. Meanwhile, a hydraulic rod is matched to operate so as to conveniently clamp an object, so that the labor intensity is reduced, the clamping effect is improved, and the stability and firmness of subsequent clamping are improved; and by rotating and moving the clamping rod within a certain ra