A inspection shaft lid for automatically regulated displacement

• Main Authors: LIU MINGDA, HE CONGWANG, LI CHENGLONG, ZHANG ZHE, JIN TONGTONG, HOU ZHENHUA, ZHU XIANYONG, LIU CHUANXI
• Format: Patent
• Language: Chinese; English
• Published: 18.05.2018
• Subjects: EMBANKMENTS; EXCAVATIONS; FIXED CONSTRUCTIONS; FOUNDATIONS; HYDRAULIC ENGINEERING; SOIL SHIFTING; UNDERGROUND OR UNDERWATER STRUCTURES

The utility model relates to an inspection shaft lid for automatically regulated displacement belongs to the road construction field. The main part is the cross centre frame, and four fan -shaped lidsare connected on the cross centre frame through annular pivot, cross centre frame cross section is equipped with the cylinder hole as the ponding groove, cross centre frame upper end be equipped withwith the ponding communicating ponding hole in groove, four stereoplasm springs are connected through spring fixing sleeve in cross centre frame bottom, the stereoplasm spring links together the ponding groove with central cylinder, have four rectangular channels on the central cylinder, the bottom and the rectangular channel bottom fixed connection of spring, the upper end installation buckle ofspring, the buckle revolutes the rotation of axes, fixed mounting hinged -support A on the cylinder of center, hinged -support A is articulated with the connecting rod, and the connecting rod other end is articulated with hing