Clamp for welding manifold flange and clamshell

The clamp for welding the manifold flange and the clamshell comprises a workbench and a bottom plate, the bottom plate is arranged at the upper end of the workbench, the workbench and the bottom plateare fixed in a spot welding mode, a limiting seat is arranged on the right side of the upper end of the bottom plate, and a fixing seat is arranged on the left side of the upper end of the bottom plate. A baffle is fixed to the surface side of the left end of a bottom plate through bolts, the device is provided with a protection plate and a buffer mechanism at the surface end of a traditional clamp, an object to be clamped can be effectively protected through the protection plate, and the object to be clamped and the protection plate are effectively buffered; according to the device, the sliding groove is formed in the surface side of the upper end of the bottom plate, and the sliding table is arranged at the intersection of the lower end of the fixing seat and the bottom plate, so that when the fixing seat moves