Replacement mechanism and acrylic plate fracture alarm device

The utility model relates to the technical field of acrylic boards, in particular to a replacement mechanism and an acrylic board fracture alarm device, which comprise a mounting assembly, a first sleeve shell and a second sleeve shell, the first sleeve shell is provided with a cavity, a limiting piece is arranged in the cavity, and the second sleeve shell is connected with the first sleeve shell through a connecting piece; the body assembly comprises a shell, an acrylic plate, a conductive interlayer and an alarm piece, the mounting assembly is connected with the shell, the conductive interlayer is located in the acrylic plate interlayer, and an electrifying insertion block arranged on one side of the alarm piece penetrates through an electrifying hole to be connected with a supporting ring arranged on the periphery of the conductive interlayer; according to the utility model, the acrylic plate can be rapidly taken out for cleaning or replacement through the replacement mechanism, the observation of ammeter