Quick welding clamp for pedal rod bracket welded piece

The utility model discloses a quick welding clamp for a pedal rod bracket welded piece. The quick welding clamp for the pedal rod bracket welded piece comprises a limiting block, a welding clamp body and a conical surface rotating wheel mechanism; the welding clamp body is a cuboid of which the shape is similar to that of a bracket and the width size is slightly smaller than that of the inner cavity of the bracket; a 45-degree inclined surface is arranged at the left end of the welding clamp body; a clamping groove which is matched with the limiting block in a sliding manner is formed in the inclined surface; an open through groove for mounting the conical surface rotating wheel mechanism is formed in the right end of the inclined surface; the conical surface rotating wheel mechanism comprises a conical surface rotating wheel, a ball handle, an expansion push rod and a return spring; when the ball handle pushes the conical surface rotating wheel to rotate clockwise, the conical surface of the conical surface rotating wheel pushes the expansion push rod to be ejected out of the welding clamp body; when the ball handle pushes the conical surface rotating wheel to rotate counterclockwise to restore, the return spring pushes the expansion push rod to an original position. The welding clamp is simple in structure, economic and practical; the pitch width of the bracket is expanded to the two sides by pushing the expansion push rod through the conical surface of the conical surface rotating wheel, so that the preassembling of a spring limiting plate is facilitated, the production efficiency is improved, the repair frequency of a mould is reduced, and the repair cost of the mould is reduced.