Expanding clamp used for installing tin bath bottom brick

The utility model discloses an expanding clamp used for installing a tin bath bottom brick, which comprises a hoisting ring (1), a movable core bar (2), a conical expanding block (7) and a chuck plate (6). The hoisting ring (1) is fixed at the upper end of the movable core bar (2), the conical expanding block (7) is fixed at the bottom of the movable core bar (2), a connecting plate (4) which can move up and down along the movable core bar (2) is horizontally arranged on the movable core bar (2), and the upper end of the chuck plate (6) is connected with the connecting plate (4). The expanding clamp is mainly used for hoisting, transporting and installing a float glass tin bath bottom brick, can ensure that the brick body of the tin bath bottom brick is not damaged during the process of hoisting, transporting and installing, and can eliminate the potential safety hazard to the operating personnel during the process of installing and transporting.