Drag chain convenient to disassemble and assemble

The utility model belongs to the field of drag chains, and particularly relates to a drag chain convenient to disassemble and assemble, which comprises a chain plate, a chain link is hinged on the chain plate, two cross rods are in contact connection with the surface of the chain link, a support rod is arranged between the two cross rods, a clamping plate is welded on the cross rods, two clamping blocks are welded on the surface of the chain link, and the two clamping blocks are arranged on the chain link. The two clamping blocks are symmetrically distributed on the chain links, the clamping blocks are in contact connection with the clamping plates, limiting grooves are formed in the clamping blocks, guide holes are formed in the clamping plates, guide rods are slidably connected into the guide holes in a sleeved mode, and the guide rods are slidably connected into the limiting grooves. The guide rod is arranged in the clamping plate, the spring is arranged on the outer side of the guide rod, under the action