Automatic chain tensioning mechanism of pipe chain conveyor

The utility model provides an automatic chain tensioning mechanism of a pipe chain conveyor, which comprises a fixing plate, a first matching wheel and a second matching wheel are arranged on one side of the fixing plate, and the first matching wheel and the second matching wheel are connected with a worm transmission part arranged on the other side of the fixing plate. A first sliding rail and a second sliding rail are arranged at the positions, located on the two sides of the first matching wheel and the second matching wheel, of the side wall of the fixing plate, sliding blocks are assembled on the first sliding rail and the second sliding rail correspondingly, racks are installed on the sliding blocks and detachably connected with the sliding blocks through locking structures, and tensioning wheels are arranged on the racks; compared with a traditional moistureproof insulation inlet wire cabinet, the moistureproof insulation inlet wire cabinet is characterized in that the racks with the tensioning wheels