Assembled subway tunnel cleaning vehicle

The utility model discloses an assembly type subway tunnel cleaning vehicle which comprises a cleaning vehicle body, an arc-shaped plate, a driving shaft and a cleaning brush center pipe connected to the driving shaft in a sleeved mode are arranged on the cleaning vehicle body, the cleaning brush center pipe is connected to the driving shaft in a sleeved mode, and a locking piece is arranged between the driving shaft and the cleaning brush center pipe. The top end of the driving shaft is detachably connected with a sleeve in a sleeving mode through a clamping structure, a pressing spring is installed at the bottom end of the sleeve, and the bottom end of the pressing spring is pressed at the top end of the cleaning brush center pipe through a pressing part. The sleeve and the pressure spring are arranged, the limiting clamping groove and the limiting clamping column are matched, the cleaning brush center pipe can be pressed and fixed, mounting and dismounting of the cleaning brush center pipe are also facilit