The application discloses a multi-circle combined
pipe and a connecting and locking device thereof, relates to the technical field of
pipe structure, and the connecting and locking device comprises a connecting shell and a connecting
assembly. The connecting shell extends along the extension direction of a
pipe jacking
machine, and a limiting groove is formed between the connecting shell and the outer wall of the pipe jacking
machine. The connecting
assembly comprises a connecting rod, a plug-in rod, a connecting pivot, a locking piece and a telescopic driving structure. One end of the plug-in rod is in plug-in cooperation with the limiting groove, the other end of the plug-in rod extends out of the limiting groove and is hinged to the connecting rod through the connecting pivot. The end of the connecting rod away from the plug-in rod is hinged to the side wall of a
pilot pipe through a hinge shaft. The telescopic driving structure is connected to the middle part of the connecting rod. The telescopic driving structure can drive the connecting rod to rotate around the hinge shaft. The locking piece can lock or unlock the connecting pivot, so that the plug-in rod can be fixed or rotated relative to the connecting rod. The multi-angle connection between the
pilot pipe and the pipe jacking
machine can be adapted, the adjustment efficiency of the connection posture of the
pilot pipe and the pipe jacking machine is improved, and the connection precision and the connection reliability are improved.