Supporting mechanism of wall face purline at position of corner post of concrete bent plant

The invention discloses a supporting mechanism of a wall face purline at the position of a corner post of a concrete bent plant. The supporting mechanism comprises a post body. A fixing disc is arranged on the top of the post body, the top of the fixing disc is fixedly connected with a connecting ring, a rubber ring is arranged on the top of the connecting ring, a supporting block is arranged on the top of the rubber ring, a connecting shaft is arranged on one side of the connecting ring, and the side, away from the connecting ring, of the connecting shaft is rotationally connected with a telescopic rod. By rotating a threaded rod, clamping plates on the two sides are close to the center position, a toothed belt is driven to rotate, the toothed belt drives a gear to rotate, the gear drivessteering rods on the two sides to rotate through rotary rods, toothed rings are driven to rotate, as the toothed rings and the gear are rotationally connected with a toothed plate, then the toothed plate is driven to rise, a