Round-hole-shaped bearing seat with brake screw

The utility model belongs to the technical field of bearing seats. The round-hole-shaped bearing seat comprises a base, a mounting frame is fixedly arranged at the top of the base, a fixing plate is mounted at the top of the mounting frame, a worm is rotationally connected to the inner wall of the fixing plate, a rotating wheel is fixedly arranged at the top of the worm, and two rotating shafts are symmetrically and fixedly arranged on the outer wall of the mounting frame. And the circumferential outer walls of the two rotating shafts are rotationally connected with straight gears correspondingly, the two straight gears are engaged with the worm correspondingly, and two limiting blocks are fixedly arranged on the outer wall of the mounting frame in a symmetrical structure. The rotating wheel is rotated to drive the worm to rotate, so that the two toothed plates drive the two clamping plates to get close to the outer end wall of the connecting shaft correspondingly, brake pads on the inner sides of the two cla