How to adjust the wet spraying manipulator to reduce rebound? To reduce the rebound of the wet spraying manipulator, the following adjustment measures can be taken:

　　1. Optimize the water-cement ratio:

　　The best water-cement ratio is determined through experiments. Generally, a higher water-cement ratio can reduce rebound, but it is necessary to ensure that it does not affect the strength and adhesion of the concrete.

　　2. Adjust the injection pressure:

　　Reduce the injection pressure. Excessive pressure may cause increased concrete rebound. However, too low pressure may affect the injection effect and coverage.

　　3. Improve the nozzle design:

　　Choose a nozzle suitable for the wet spraying process, such as a specially designed anti-rebound nozzle to reduce rebound.

　　Adjust the opening size of the nozzle to control the injection flow and particle size to reduce rebound.

　　4. Optimize the injection parameters:

　　Adjust the injection speed and angle so that the concrete can evenly cover the working surface and reduce local over-injection and rebound.

　　5. Improve construction skills:

　　Train operators to familiarize them with wet spraying technology and equipment operation to accurately control injection parameters and reduce rebound.

　　6. Use additives:

　　Add an appropriate amount of water reducer or other additives to the concrete to improve its workability and reduce rebound.

　　7. Improve the construction environment:

　　Try to reduce the wind speed at the construction site, such as setting up shelters when the wind is strong, or adjusting the construction time to avoid periods with high wind speeds.

　　8. Regular maintenance:

　　Regularly clean and maintain the wet spraying manipulator to ensure the cleanliness of the nozzle and other parts to prevent rebound caused by blockage.

　　By implementing the above measures, the rebound during the wet spraying process can be effectively reduced and the construction quality and efficiency can be improved. During the adjustment process, the rebound rate and spraying effect should be continuously monitored to ensure the best construction effect.