Strength detection device for alumina ceramics

The utility model discloses a strength detection device for alumina ceramics, which comprises two bottom plates, locking devices are arranged on the sides, close to each other, of the two bottom plates, each locking device comprises a plurality of first extrusion blocks, and the first extrusion blocks are annularly arranged and are in sliding connection with the bottom plates; the ends, away from each other, of the multiple first extrusion blocks are each provided with a second extrusion block in sliding connection with the bottom plate. According to the strength detection device for the aluminum oxide ceramic, the second extrusion blocks which are annularly distributed are arranged on the bottom plate, and the first extrusion blocks which are in one-to-one correspondence with the second extrusion blocks are arranged at the end parts of the second extrusion blocks, so that when the strength detection device is used, the plurality of second extrusion blocks slide away from each other and are tightly propped ag