Pipeline joint quick release device for urban underground drainage pipe network transformation

The utility model discloses a pipeline joint quick-release device for transforming an urban underground drainage pipe network in the technical field of urban drainage, which comprises a fixing plate, a bearing cross beam is fixedly mounted at the upper end of the fixing plate, and a support rod is fixedly mounted at the right end of the fixing plate; by means of the adjustable fixing assembly, the distance between the two clamping plates can be adjusted by rotating the threaded rod, drainage pipes with different diameters can be fixed according to the different distances between the clamping plates, the use range is greatly widened, the fixed pipeline connector quick detaching device is matched with the detaching assembly, connector detaching treatment can be conducted, and the practicability is high. In addition, through the arranged sliding type dismounting assembly, the position of a cutting blade can be changed by moving a limiting sliding block in a limiting sliding cavity, then the joint is precisely cu