Anti-cracking device for mounting corner type ALC (autoclaved lightweight concrete) plate

The utility model discloses an anti-cracking device for installing a corner type ALC plate, which comprises an L-shaped steel plate member arranged at the internal corner of the corner type ALC plate, the L-shaped steel plate member comprises a transverse plate and a longitudinal plate which are vertically connected, and the longitudinal plate is provided with a clamping assembly penetrating into the longitudinal part of the corner type ALC plate. The end, away from the longitudinal plate, of the clamping assembly is located in the edge of the longitudinal portion of the corner type ALC plate, a stop structure matched with the longitudinal portion of the corner type ALC plate in an axial stop mode is arranged at the end of the clamping assembly, and a longitudinal rod piece penetrating into the transverse portion of the corner type ALC plate is arranged on the transverse plate. And the length of the longitudinal rod piece is smaller than the thickness of the transverse part of the corner type ALC plate. When