Multifunctional wet spraying machine for tunnel

The invention belongs to the technical field of wet spraying machines, and particularly relates to a multifunctional wet spraying machine for a tunnel. Comprising a vehicle body, and a control system, an operation assembly, a hydraulic system and a wet spraying system are installed on the vehicle body. The device further comprises an arch-shaped spraying mechanism. The arch-shaped spraying and wetting mechanism comprises a supporting plate fixed to the vehicle body; the first hydraulic cylinder is fixedly connected to the upper surface of the supporting plate; the mounting column is fixedly connected to an extension shaft of the first hydraulic cylinder; a motor; a second hydraulic cylinder; an extension shaft of each second hydraulic cylinder is rotationally connected with the corresponding arc-shaped sliding rail section; a convex slide block; the spraying bin is fixedly connected to the upper surface of the convex sliding block; the arch frame type tunnel wet spraying machine is mainly used for solving the