Detachable closed floor support plate in buckle connection

The utility model relates to the technical field of building boards, in particular to a buckle-connected detachable closed floor support plate which comprises a main plate body. The detachable closed floor support plate in buckle connection is composed of the first main body steel plate, the second main body steel plate and the third main body steel plate, the first transverse plate and the second transverse plate are fixedly connected through the buckle mechanism, and the left side protruding plate and the right side protruding plate are fixedly connected through the bottom connecting mechanism, so that the floor support plate can be disassembled and assembled according to requirements, and the floor support plate is convenient to assemble and disassemble. The disassembled floor support plate is convenient to transport and convenient to maintain in the later period; the clamping block with the inclined surface at the joint of the upper end surface and the left end surface in the sliding groove is clamped int