Patent ID: 11952768
Assignee: NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 2:
3. The fabricated concrete connection structure according to claim 1, wherein the first sliding part comprises a first sliding ring (16), second springs (15) being arranged at one end of the first sliding ring (16), and two ends of each of the second springs (15) abutting against an end portion of the first sliding ring (16) and one side of the female head connection seat (6); an outer wall of the first sliding ring (16) being slidably connected to the inner wall of the second sleeve pipe (10); and an inner wall of the first sliding ring (16) being slidably connected to the top of one end of the second sliding part and being slidably connected to an outer wall of the fourth sleeve pipe (21).