Measures shaker noise source

Coal is a major shaker Mobile crushing plant tool. Due to its own characteristics determines the normal operation must be achieved by vibrating sieve , but the vibration is the root cause

of noise , and high sound level , the sound source are many and complex . This research adopted a multi- point multi-

The simultaneous measurement of vibration and noise , and then recorded to tape drive vibration and noise signal spectrum analyzer via analysis and coherence analysis . Through

the plate, side plates , bearings and vibration exciter on the screen such as a spring steel used in the analysis of the main noise sources , noise proved shaker

Acoustic test results are reliable , the main noise source is the right to determine , for the CPP provides a theoretical basis for noise control .

They have made a noise reduction measures are as follows : Tightening shaker all the parts, especially the need for frequent replacement of the sieve, to avoid the loosening of

individual components of the additional vibration ; punching steel sieve will replace the elastic modulus small , low noise impact or polyurethane sieve

Rubber sieve ; side in the China Coal Ranbow Mortar Mixer Machine box , the feed to the discharge port, discharge port and splice rubber plate affixed inside the chassis , which can effectively suppress the

side panel high frequency vibration , reducing radiated noise ; using flexible spokes gears instead of steel gears , i.e. the gear plate of the rubber elastic body spoke pass

Delivery torque absorbing gear meshing , the vibration caused by gnawing ; replaced with a rubber spring steel spring , in order to reduce the impact ; in vitro installation

exciter soft insulation cover; the bearings to be damped between the inner and outer , the bearing rolling elements can be made into a hollow body or rolling

Rolling the hollow interior adding damping material, which can reduce the vibration of the bearing and lower bearing noise .