A vehicle-mounted wet spraying machine is a mobile mechanical device that integrates the functions of concrete mixing, conveying and spraying. Its main components include:

　　1. Mixing system

　　- Mixing barrel: used to mix cement, sand, gravel, water and other additives to ensure the uniformity of concrete.

　　- Mixing blades: rotate in the mixing barrel to fully mix the raw materials.

　　- Drive device: usually an electric motor or a hydraulic motor, providing power for the rotation of the mixing blades.

　　2. Pumping system

　　- Concrete pump: transports the mixed concrete to the spraying location through a pipeline. Common pump types include plunger pumps and double piston pumps.

　　- Delivery pipeline: connects the pump and the spray gun to withstand the delivery of high-pressure concrete.

　　3. Spraying system

　　- Spray gun (nozzle): used to accurately spray concrete onto the construction surface, usually equipped with adjustable spray angle and distance.

　　- Spray control device: controls the operation of the spray gun, including switches, pressure regulation, etc.

　　4. Power system

　　- Engine: Provides the power required for the operation of the equipment, which can be a diesel engine or a gasoline engine.

　　- Transmission system: Transfers the power of the engine to the mixing system and the pumping system.

　　5. Operating system

　　- Control panel: The operator monitors and adjusts the entire spraying process through the control panel, including parameters such as pumping speed and spraying pressure.

　　- Remote control device: Some models of vehicle-mounted wet spraying machines are equipped with remote controls, making the operation more flexible and convenient.

　　6. Auxiliary system

　　- Compressed air system: Provides compressed air required for spraying, usually including air compressors and air tanks.

　　- Water system: Used to clean the equipment and adjust the fluidity of concrete, including water tanks and water pumps.

　　7. Chassis and suspension system

　　- Chassis: The basic structure that carries the entire equipment, usually with a certain off-road capability to adapt to different construction sites.

　　- Suspension system: Ensures the stability and comfort of the vehicle when driving on uneven ground.

　　8. Electrical system

　　- Generator: Powers the electrical equipment of the vehicle-mounted wet spraying machine, including lighting, control systems, etc.

　　- Battery: starts the engine and powers the vehicle's electronic devices.

　　9. Safety System

　　- Emergency stop button: quickly stops the equipment in an emergency.

　　- Alarm device: sounds an alarm when the equipment is abnormal to alert the operator.

　　These main components work together to ensure that the vehicle-mounted wet spraying machine can complete concrete spraying operations efficiently and safely. During use, regular inspection and maintenance of these components are very important to ensure the reliability and durability of the equipment.