Sleeve for reverse fastening of bolt

• Main Authors: RUAN XINWEI, GUO PENGCHENG, JING KUI, WANG QI, WANG HAICUN, ZHENG ZHIKUN
• Format: Patent
• Language: Chinese; English
• Published: 26.07.2024
• Subjects: HAND TOOLS; MANIPULATORS; PERFORMING OPERATIONS; PORTABLE POWER-DRIVEN TOOLS; TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FORFASTENING, CONNECTING, DISENGAGING OR HOLDING; TRANSPORTING

The utility model discloses a sleeve for reversely fastening a bolt, and belongs to the technical field of steel structure connecting and fastening construction. The main sleeve (1) and the secondary sleeve (2) are fixed by welding; a through polygonal long hole matched with a nut is formed in the main sleeve (1); one end of round steel of the secondary sleeve (2) is provided with a round hole of which the diameter is 1-2mm larger than the size of a bolt head, the other end of the round steel is provided with a rectangular hole matched with an electric torque wrench joint, and the round steel is provided with a radial through long round hole; the sum of the length of the main sleeve (1) and the length of the circular hole in the secondary sleeve (2) is 5-10 mm larger than the exposed length of the bolt. The nut reverse fastening device has the advantages that in reverse fastening construction of the steel structure nut, a manual wrench is not needed for fastening construction, the nut reverse fastening device