Movable support for concrete spreader

The movable support for the concrete spreader comprises a door-shaped reinforcing steel bar, a long straight reinforcing steel bar and a limiting reinforcing steel bar, clamping pieces are evenly welded to the top of the door-shaped reinforcing steel bar, the long straight reinforcing steel bar is connected with inner cavities of the clamping pieces in a clamped mode, and rectangular grooves are formed in the middles of the two ends of the long straight reinforcing steel bar. Connecting rods are connected to the outer rings of the two ends of the limiting steel bars, rectangular rods are movably connected to inner cavities of the top ends of the connecting rods, and the other ends of the rectangular rods are connected with inner cavities of the rectangular grooves in a clamped mode. According to the movable support for the concrete spreader, through the arrangement of the connection mode of the long straight steel bars and the door-shaped steel bars, the deformed long straight steel bars and the door-shaped s