The utility model relates to the technical field of conveyors, and discloses a chain for a conveyor, which comprises a chain main body, the chain main body is arranged on a conveyor main body, the chain main body comprises an outer chain plate, a pin shaft, an inner chain plate, a roller and a sleeve, the outer chain plate is in
interference fit with the pin shaft, and the inner chain plate is in
interference fit with the sleeve. A lubricating
assembly is installed on the right side of the top of the conveyor main body, a collecting
assembly is installed on the right side of the bottom of the conveyor main body, a tensioning adjusting
assembly is installed in the middle of the bottom of the conveyor main body, and a threaded column can be driven to rotate by rotating a
handle block, so that a positioning frame moves downwards; when the chain body is loosened, the rollers generate downward pulling force on the surface of the inner side of the chain body, so that the chain body can be kept in a proper tensioning state, the problems of
jumping, falling or slipping and the like caused by looseness of the chain body are solved, and the transmission stability and reliability of the chain body are improved.