Caterpillar track section assembly of crawler-type engineering machinery

The caterpillar track section assembly is simple in structure and convenient to assemble and maintain and comprises an assembly body, a left chain piece and a right chain piece, the left chain piece and the right chain piece are arranged on the assembly body, a first caterpillar track supporting column is arranged on the assembly body, and a second caterpillar track supporting column is transversely arranged on the first caterpillar track supporting column in a penetrating mode. The two ends of the first crawler belt supporting column are rotationally arranged on the assembly body, the two ends of the second crawler belt supporting column are arranged on the left chain piece and the right chain piece through clamping devices correspondingly, each clamping device comprises a fixing sleeve, the fixing sleeves are arranged on the left chain piece and the right chain piece correspondingly, and sliding blocks are arranged on the fixing sleeves in a sliding mode. Clamping grooves matched with the second crawler bel