Cutter mounting structure of shield tunneling machine

The utility model provides a shield tunneling machine cutter installation structure which comprises an installation seat, the installation seat is fixed on a radial plate, a supporting assembly used for fixing a cutter is arranged on the installation seat, and the supporting assembly comprises a fixed supporting plate and a movable supporting plate. Two T-shaped grooves are formed in the mounting base, two T-shaped blocks are arranged on the movable supporting plate, through holes are formed in the T-shaped blocks, a sliding groove is further formed in the mounting base, a push plate is arranged in the sliding groove in a sliding mode, the sliding groove is communicated with the T-shaped grooves, a limiting rod aiming at the through holes is arranged in the mounting base, an inclined face matched with the side face of the push plate is arranged at the inner end of the limiting rod, and an annular baffle is arranged on the limiting rod. A limiting groove aiming at the annular baffle plate is formed in the moun