Municipal trenchless repair inner air bag installation device and construction method thereof
By designing an airbag installation device for trenchless municipal repair, and adopting mechanized and remote operation, the safety risks and low efficiency of traditional manual installation methods have been solved, achieving safe and efficient sealing of the airbag.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CCCC FOURTH HIGHWAY ENG CO LTD
- Filing Date
- 2026-04-07
- Publication Date
- 2026-07-17
AI Technical Summary
Traditional methods of installing internal airbags rely on manual operation in the well, which poses safety risks to construction workers and has low construction efficiency.
An airbag installation device for trenchless municipal repair was designed, comprising an adjustment unit, a support unit, and a recovery unit. The airbag is installed through mechanized and remote operation, avoiding manual entry into the well. The position of the airbag is adjusted using telescopic rods and rotating parts. The support unit controls the inflation and deflation of the airbag, and the recovery unit enables the safe retrieval of the airbag.
It achieves full-process mechanization and remote operation, avoids the safety risks of manual well entry, improves construction efficiency and safety, and ensures the reliable sealing effect of airbags.
Smart Images

Figure CN122407903A_ABST