Screw-in type distraction screw and mounting method thereof

• Main Author: CHEN BAIHENG
• Format: Patent
• Language: Chinese; English
• Published: 14.01.2022
• Subjects: BLASTING; DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS ORMACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS,CLIPS, WEDGES, JOINTS OR JOINTING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; THERMAL INSULATION IN GENERAL; WEAPONS

The invention discloses a screw-in type distraction screw and a mounting method thereof. The distraction screw comprises a bolt and a distraction sleeve. The bolt comprises a screw rod part and a head part which are connected with each other; the distraction sleeve is sleeved outside the bolt and comprises a sleeve part and a plurality of expanding sheets; the distraction screw is used for fixing a connecting piece in the stone, the length of the screw rod part is matched with the thickness of the connecting piece, and the length of the screw rod part is designed to be that when a constructor rotates the bolt till the head of the bolt abuts against the connecting piece, the expanding sheet is expanded to the required expanding degree, and therefore the constructor can conveniently judge whether the bolt is expanded or not; and in addition, it can be effectively ensured that the opening screw is stably fixed in the stone, so that the safety is greatly improved. And meanwhile, only one-time rotation is needed,