Tunnel inner wall cleaning device

The invention discloses a tunnel inner wall cleaning device. The tunnel inner wall cleaning device comprises a rail flat car, wherein a fixing support is arranged on the rail flat car, the outer side of the fixing support is connected with a pipeline through a pipe clamp assembly, a plurality of spraying devices are arranged on the outer side of the pipeline, and the spraying devices are independently controlled or controlled in a grouping mode. According to the tunnel inner wall cleaning device, tunnel full-section covering cleaning can be achieved, the working state of nozzles can be independently controlled through ball valves, and cleaning operation under different working conditions is met; the operation effect is good, the high operation efficiency is high, and meanwhile, the pipeline and the fixing support formed through combination are convenient to disassemble and assemble and high in supporting performance, disassembly and assembly can be selected according to actual requirements, the number of oper