company news about What is the testing device for vibration and sound radiation characteristics of train wheels under wheel rail contact?

The company has developed a testing device for vibration and sound radiation characteristics of train wheels under the wheel rail contact state, including a cast iron table top, a steel rail, and a ball drop slide excitation device. The cast iron table top is equipped with a force adding device to pressurize the train wheel and the steel rail, the train wheel is equipped with a vibration sensor, the outer cover of the cast iron table top plane is equipped with a microphone arrangement support, and the microphone arrangement support is equipped with a microphone. The beneficial effect of the utility model is to simulate the situation that the train wheel is pressed on the steel rail under the action of great axle load in practice, measure the vibration characteristics and sound radiation characteristics of the wheel under the wheel rail contact state, and is not limited by the wheel as a point sound source, so as to help researchers deeply explore the action mechanism of wheel vibration and sound radiation, and quantitatively analyze its sound radiation level.