The fan for centralized air supply shall be set in a separate sound insulation room with sound-absorbing materials, and a muffler shall be used on the fan's inlet and exhaust pipes. Mufflers should be provided for fans that disperse the air. Large fans should be installed underground when conditions permit, and all damping or impedance composite mufflers should be used. The fan and the foundation are elastically connected, and a vibration-proof foundation is designed or a shock absorber is installed. Power pipelines, especially high-temperature, high-pressure, and high-speed power pipelines, should generally be buried in the ground, damping the pipelines that transport high-speed gas, coating asphalt soft rubber and other polymer materials on the pipe wall and tightly wrapping a layer of linoleum. Damping and reducing noise. The pipes and vibration equipment should be connected flexibly.
For small mobile air compressors should be placed in a separate soundproof room outside the workshop. Exhaust parts of various types of equipment should use damping or impedance muffler, small hole injection muffler, throttle pressure reducing muffler or small hole injection, throttle pressure reducing muffler. The air hammer exhaust pipe shall be installed with a muffler. For forging die replacement, a hydraulic ejector (in) device should be used. Worker operating points should be provided with adjustable damping plates.
The noise limits of various shearing machines, bending machines, hydraulic machines, automatic upsetting machines, air hammers, mechanical presses, etc. in forging machinery should all comply with relevant regulations. Noise limit for daily contact noise of 8h or less. Workshop noise radiation The environmental noise limit outside the factory boundary should comply with relevant regulations.
The installation and construction of forging equipment must comply with relevant regulations. The design of the forging hammer foundation must meet the requirements. Those who do not meet the requirements should be remodeled or remedial measures taken. The vibration level in the vibration transmission area must be in accordance with the environmental category.
In order to ensure the good working efficiency of the wheel forging workshop workers, the vibration parameters of the "effect limit" should not exceed a fixed value. The exposure limit to ensure the health and safety of the operator is allowed to be 6dB higher than the "ergonomic limit" acceleration value. The vibration parameters of the "comfort limit" to ensure the comfort and comfort of the operator must be 10dB lower than the "ergonomic limit" acceleration level. For the measurement of noise and vibration, the measurement results shall conform to the national regulations.