Duct-piece spigot-and-socket connection structure

• Main Authors: GUO GONGCHUN, LUO ANQING, ZHANG ZENG, YANG CHANGYU, CHEN HANBO, ZHANG HONGYING, CAO SHICHAO, YI DAN, YU BO, ZHEN WENZHAN, WANG ZHIYUAN, LIU QIFENG, LIN GANG, SONG TONGWEI, GUO JUN, YANG ZHENG
• Format: Patent
• Language: Chinese; English
• Published: 28.06.2019
• Subjects: EARTH DRILLING; FIXED CONSTRUCTIONS; GALLERIES; LARGE UNDERGROUND CHAMBERS; MINING; SHAFTS; TUNNELS

The invention relates to a duct-piece spigot-and-socket connection structure. Weakening of the connection structure to a duct piece structure is reduced to the greatest degree, the convenience and timeliness of duct piece installation are greatly improved, and the risk is effectively avoided that a connection component falls down in the tunnel operation period. A hand hole and a spigot-and-sockethole which are connected through a straight hole channel are formed in a preorder duct piece, and a mounting hole corresponding to the spigot-and-socket hole is formed in a postorder duct piece. An assembly component comprises an embedded thread sleeve, a straight screw, a long nut and a spacer, the embedded thread sleeve is fixedly embedded in the mounting hole, the front end of the straight screw is in threaded connection with the embedded thread sleeve, a main body of the straight screw penetrates through the mounting hole and enters the spigot-and-socket hole, the rear end of the straightscrew is in threaded conne