The LCHP40D vehicle-mounted wet spray manipulator features a professional automobile chassis. It is a special piece of equipment developed and upgraded based on initial support concrete anchoring and shotcreting technology applied in domestic tunnel and construction conditions. This equipment features a large injection volume (maximum injection volume 40m³/h), with pipes that are resistant to blockage, low rebound, good maneuverability, stable and reliable performance. It solves the problem that traditional small wet spraying machines cannot meet the needs of concrete spraying in large tunnels, improves construction efficiency, reduces concrete consumption, and effectively guarantees construction quality.