As an efficient tunnel support and slope reinforcement equipment, the wet spraying trolley plays an indispensable role in modern engineering construction. In order to ensure the quality and safety of construction, operators must follow a set of rigorous standard processes, from equipment inspection to specific operation, and then to subsequent maintenance, each link is crucial. The following is a complete set of guidelines based on industry practical experience, which aims to help operators master the various skills of the wet spraying trolley, improve work efficiency and ensure site safety.

　　I. Preparation work before operation

　　Qualification review: All operators must receive professional pre-job training and pass the assessment, and have the corresponding operation qualification certificate.

　　Material verification: Before starting, carefully check whether there are foreign objects in the hopper, confirm that the water tank has sufficient water storage and the water quality is clean, and avoid impurities entering the pipeline to cause failures.

　　System detection:

　　Verify whether the wind pressure and voltage parameters are in the normal range to ensure that all indicators of the machine meet the standards.

　　Adjust the tension of the tie rod, confirm the correct direction of the rotor, check the status of the vibration motor, metering pump and quick-setting agent pipeline, and ensure that all key components operate normally.

　　Establish a clear communication protocol and agree on a unified gesture language signal with the sprayer in advance to facilitate real-time communication and coordination.

　　II. Precautions during construction

　　Site selection: Ensure that the wet spraying trolley is parked flat and solid, and the tires are all in contact with the ground to provide stable support.

　　Electrical safety: If an external power supply is required, be sure to check the integrity of the line after power is turned off to avoid the risk of electric shock. The cable should be laid away from the water source, and it is better to hang it in the air.

　　Real-time monitoring: Pay close attention to the changes in wind pressure during the operation, keep in close contact with the sprayer, and adjust the air volume and quick-setting agent dosage in time according to the on-site feedback to ensure the quality of spraying.

　　Emergency response: If the pipeline is blocked, stop the high-pressure air immediately, and carefully disassemble the relevant components to prevent the residual gas from being released suddenly and causing harm.

　　Stop work treatment: After the spraying task is completed, use high-pressure air to blow the spray pipe and quick-setting agent pipeline to completely empty the residual materials. If the interval is long, a water washing procedure is also required to avoid material solidification and blockage.

　　III. Shutdown and cleaning steps

　　When the wet spraying trolley stops spraying, the spray pipe and the quick-setting agent pipeline should be thoroughly cleaned with high-pressure air to avoid residue blockage. If the interval between two sprayings exceeds half an hour, the wet spraying machine, spray pipe and quick-setting agent pipeline must be thoroughly cleaned with water to prevent equipment damage or affect the next operation.

　　Through the above detailed operating guidelines, not only can the accident rate of wet spraying trolleys at the construction site be greatly reduced, but also the service life of mechanical equipment can be effectively extended, which will escort the smooth implementation of the project.