发明名称 |
Method and equipment for attenuation of oscillation in a paper machine or in a paper finishing device |
摘要 |
A method and apparatus for damping vibration in a paper machine. The apparatus having a dynamic damper which includes a weight suspended by a spring. The spring constant of the spring is changed by means of a control device in order to tune the natural frequency of the dynamic damper. The dynamic damper is tuned to a frequency that is substantially equal to a multiple of the rotational frequency of the roll in the paper machine that is being damped.
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申请公布号 |
US6911117(B1) |
申请公布日期 |
2005.06.28 |
申请号 |
US19990403912 |
申请日期 |
1999.10.28 |
申请人 |
METSO PAPER, INC. |
发明人 |
KARHUNEN JOUKO;PURANEN ARTO;KOELIOE JORMA;LEHTOVIRTA ESA;HIETAMAEKI ERKKI |
分类号 |
D21G1/00;F16F7/10;(IPC1-7):D21G7/00;F16F15/00 |
主分类号 |
D21G1/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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