Convenient-to-operate tube replacing mechanism of tube push bench

The utility model relates to the technical field of pipe jacking, in particular to a pipe replacing mechanism of a pipe jacking machine convenient to operate, and solves the problems that in the prior art, when a pipe is conveyed through a lifting belt, due to the fact that the lifting belt and the pipe can shake, manual participation is needed to stabilize the two sides of the pipe in the pipe discharging process, manpower is consumed, and the pipe replacing efficiency is high. And the pipe feeding efficiency cannot be improved. A pipe jacking machine pipe replacing mechanism convenient to operate comprises a pipe jacking machine, a top plate is arranged at the top of one side of the pipe jacking machine, supporting frames are connected to the two sides of the top plate, two symmetrically-arranged clamping assemblies are connected to the bottom of the top plate through a connecting frame, and bearing plates are arranged at the bottoms of the two clamping assemblies; the opposite ends of the two bearing plate