Assembly tool for movable arm of horizontal double-sided excavator

The utility model discloses a horizontal double-sided excavator movable arm assembly tool, which belongs to the technical field of excavators and comprises a turnover positioner, turntables are rotatably mounted on the surface of the turnover positioner, a grouping platform is fixedly connected between the turntables, and a bottom support table is welded below the grouping platform. An excavator movable arm is installed above the grouping platform, V-shaped inner supporting blocks are reversely welded between the bottom supporting table and the grouping platform, the bottom supporting table is welded below the grouping platform of the turnover positioner, the V-shaped inner supporting blocks are welded between the grouping platform and the bottom supporting table for supporting, and meanwhile the V-shaped inner supporting blocks are welded and fixed through connecting plates. An N-shaped supporting block is arranged below the connecting plate and is welded and supported with the bottom supporting table again,