Traveling crane with self-lubricating function and lubricating method

The invention discloses a travelling crane with a self-lubricating function and a lubricating method. The travelling crane comprises a travelling crane arm, moving seats are fixedly connected to the two ends of the travelling crane arm, rollers are rotationally connected into the moving seats, guide rails are arranged below the rollers, inner grooves are formed in the moving seats, and oil storage tanks are fixedly connected to the inner tops of the inner grooves and the side walls close to the two ends; a partition plate is fixedly connected to the side wall of the middle in the oil storage tank, an oil storage groove is formed in the upper portion of the partition plate, a through hole is formed in the side wall of the top of the oil storage groove in a penetrating mode, a blocking head is arranged in the through hole, and a bottom groove is formed in the lower portion of the partition plate. The lubricating oil in the oil storage groove flows into the bottom groove, then the lubricating oil is temporarily