Analysis and experiment on the vertical vibration characteristics of a disc cutter

被引：0
|
作者：
Li, Jie [1 ]
Huang, Yuanjun [1 ]
Zhang, Bin [1 ]
Ma, Chao [1 ]
机构：
[1] College of Mechanical Engineering, Shijiazhuang Railway University, Shijiazhuang,050043, China
来源：
Zhendong yu Chongji/Journal of Vibration and Shock | 2020年 / 39卷 / 09期
关键词：
The vertical vibration of a disc cutter has certain influence on the penetration and rock breaking efficiency of a full-face tunnel boring machine. In order to study the factors affecting the vertical vibration of cutter; a three-degree-of-freedom vertical vibration model for the disc cutter was established; and the equivalent masses and stiffnesses of the disc cutter ring together with cutter body; tapered roller bearing and cutter shaft were presented. The mass and stiffness of the cutter were simulated by using the MATLAB software; and the vibration displacement of each part of the cutter was obtained. The simulated vibration displacement of each part of the cutter is consistent with the experimental results. The results show that the maximum vibration displacement of the cutter's ring and body is 2.8×10-4 m and the maximum vibration displacement of the bearing is 2.1×10-4 m. When the rigidity of the cutter's bearing increases by three times; the maximum vibration displacement of each part decreases by about 50%. When the rigidity of the cutter ring and body increases; the maximum vibration displacement of each part decreases by about 12%. To reduce the vibration of the disc cutter it needs to increase the rigidity of the bearing as well as the cutter ring and body. The results provide an effective method for the vibration measurement of disc cutters and have important significance for cutter design. © 2020; Editorial Office of Journal of Vibration and Shock. All right reserved;
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页码：201 / 206
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