XV Zhi chao1, ZHANG Zhen jing1, SUN Jie2, LIU Bin2, HUANG Zhen yu1

(1.Shanghai JiaoTong University, School of Electronic Information and Electronic Engineering, Shanghai 200240, China；2.Shanghai Zhenhua Co., Ltd, Shanghai 200215, China)

Abstract: Aiming at the radiate noise of wheel, rail and box girder when the carriage pulling the container ran along the rail, in order to reduce the noise from the sources and the transmission path, based on finite element and statistical energy method, a noise prediction model which consists of the wheel rail contact forces, impedance relationship between the rail and box girder, and the noise radiation calculation was established. According to the prediction results from the model, it was shown that the roughness of the wheel and rail contact surface, and the stiffness of the rubber pad under the rail were effective parameters. Experimental study with two different parameters were carried out on a typical container crane. The results indicate that the experiment of polishing the roughness of the rail to 30% showed that the vibration of the rail and box girder can be reduced to 56%. The other experiment of reducing the stiffness of the rubber pad to 33% showed that the vibration of the rail increase 12%, but reduce 74% for the box girder. When the two experiments were both carried out, the whole noise of the container crane can be reduced to 56%. In engineering practice, noise prediction and control of wheel rail and box girder have a certain engineering value.

Key words: container crane; noise control; wheel rail contact forces; stiffness of the rubber pad; rail roughness