Improved tubular busbar pre-arching machine

The invention discloses an improved tubular busbar pre-arching machine. The improved tubular busbar pre-arching machine comprises a machine base; a pre-arching wheel is arranged inside the machine base and below the middle of a placement table; the pre-arching wheel is connected with a swing device box; a reciprocating swing device is arranged inside the swing device body; the lower end of the reciprocating swing device is connected with the telescopic end of a hydraulic device; the pre-arching wheel swings in a reciprocating mode at the lower end of a tubular busbar under the action of the reciprocating swing device; the hydraulic device always controls the working face of the pre-arching wheel to tightly adhere to the tubular busbar for pre-arching working under the telescopic function;and through the operation of the pre-arching wheel swinging in the reciprocating mode, the tubular busbar is in a smooth arc-shaped protrusion, bending generated by direct action is avoided, stress concentration at the protru