The utility model discloses a dry quenching coke tank cover structure. The cover comprises a cover body, a lifting frame is arranged at the top of the cover body, a heat insulation layer is arranged at the bottom of the cover body, a connecting sleeve is fixedly arranged on the outer side of the cover body in an up-down adjustable mode, the connecting sleeve is connected with the cover body through a plurality of screws evenly arranged in the circumferential direction, and long groove holes matched with the screws are formed in the connecting sleeve and formed in the vertical direction; a sliding groove is formed in the inner side of the bottom of the connecting sleeve, a guide block is arranged in the sliding groove in an up-down sliding mode and connected with the connecting sleeve through a compression spring, a guide conical face is arranged on the lower portion of the inner side of the guide block, and a sealing layer is arranged on the upper portion of the inner side of the guideblock. According to the utility model, smoke and heat can be prevented from leaking, and environmental pollution and influence on surrounding equipment are avoided; according to the actual situationon site, the connecting sleeve can be adjusted in the vertical direction, the position is fixed through screws after adjustment, and adaptability is high.