Top pipe machine relay room, also known as top pipe "relay ring", "relay station", etc.

Its function is to solve the problem of long-distance pipe jacking force. It can be understood as placing the rear main roof device "forward" to the front and middle of the pipe jacking, so that during long-distance pipe jacking, the thrust of the rear main roof cannot overcome the transmission of pipe resistance due to the long pipeline. Plays a role in connecting the past and the future, and promotes relay progress.

It is generally recommended to use pipes with a top pipe distance exceeding 200 to 300 meters. It is recommended to place one pipe every 150 meters for ultra long distance pipe jacking.

The relay room is equipped with: relay room shell, sealing rubber strip, oil cylinder, hydraulic station, hydraulic pipeline, and electrical control system.