Concrete water supply and drainage pipe in-situ non-cut-off connection well adding device

The utility model discloses a concrete water supply and drainage pipe in-situ non-cut-off connection well adding device, which belongs to the field of water supply and drainage concrete pipe connection well construction and comprises a connection vertical shaft, a concrete old pipe, a new pipe, an old pipe side supporting device, an old pipe bottom supporting device and a connection well. The old concrete pipe section with the pipe bottom to be emptied and hardened is located in the connection vertical shaft, the well-in-well is arranged at the bottom in the connection vertical shaft, the old concrete pipe is communicated with the new pipe through the well-in-well, the old pipe side supporting devices are arranged on the two sides of the old concrete pipe, and the old pipe bottom supporting device is arranged at the bottom of the old concrete pipe. The steel piles are adopted, meanwhile, the steel cross beam downward carrying and steel wire rope suspension double-insurance mode is adopted for carrying out dou