Patent ID: 11920474
Assignee: CHINA RAILWAY 16TH BUREAU GROUP CO., LID
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 7:
8. The construction method of rock burst prewarning protection system in non-contact tunnel construction according to claim 7, wherein the middle connecting frame and a top connecting frame are both in a fixed connection with safety ladders, the extending directions of two safety ladders are disposed in an included angle, a top safety ladder is connected with the top connecting frame, and a bottom safety ladder is connected with the middle connecting frame, the top safety ladder and the bottom safety ladder are both connected to the protecting trolley through bolts, since the safety ladder and the protecting trolley is in a detachably bolt connection, a quantity of the safety ladder and a mounting position are changeable according to working condition;
a vertically disposed top vertical rod is fixed on a top surface of the middle connecting frame, the bottom end of the top vertical rod is fixed on the top surface of the middle long rod, the bottom ends of the top vertical rod and the connecting points of the middle connecting frame are in staggered distribution, that is, the position of the middle long rod connected with the middle short rod and the position of the middle long rod connected with the top vertical rod are in staggered distribution, a horizontally disposed top connecting frame is fixed on the top, the top connecting frame comprises a top long rod fixed with the top vertical rod and a top short rod fixed with the top vertical rod, there are six top vertical rods, which are arranged in a group of three uniformly and symmetrically on three middle long rods, there are three top long rods, and each end of the top long rod is fixed on the top end of one top vertical rod, the top vertical rod is parallel to the middle long rod, there are six top short rods, which are uniformly distributed between two gaps formed by three top long rods, the top short rod is parallel to the middle short rod and the top connecting rod is perpendicular to the top short rod, so as to form a net frame structure, a projection of the top long rod in a vertical direction is on the middle long rod, the top vertical rod and the top short rod are both I-shaped, the top vertical rod is in a fixed connection with a top connecting block inside a groove in the position connected with the top short rod, the top connecting block and the top short rod are in a fixed connection.