Pipeline polishing device

The invention discloses a pipeline polishing device. The pipeline polishing device comprises a shell, a polishing mechanism and a locking mechanism, the polishing mechanism comprises a polishing motor and a polishing piece driven by the polishing motor to work. The locking mechanism comprises a driving assembly, a first motor support, a second motor support and a locking support, the locking support is connected to the outer portions of the first motor support and the second motor support and extends out of the shell, and the driving assembly is used for driving the first motor support and the second motor support to move relatively so that the locking support can be locked to the inner wall of the pipeline all the time. According to the pipeline polishing device, manual intervention is not needed in the polishing process, time and labor are saved, and meanwhile the human body is prevented from making contact with dust generated in the polishing process. 本发明公开了一种管道抛光装置，包括外壳以及安装于外壳的抛光机构和锁紧机构；所述抛光机构包括抛光电机以及由抛光电