Method and device for changing the natural frequency of a nip roll construction in a paper or board machine
US6500304B1 · kind B1 · utility
3Cited by
10References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 14, 2001 |
| Grant date | Dec 31, 2002 |
| Priority date | — |
| Expiry date | Feb 14, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16F15/02
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method for changing the natural frequency of a nip roll construction in a paper or board machine. In the method, the bearing elasticity of a hydrostatic bearing element (10, 20, 30, 40) of at least one roll (1) in the nip roll construction is changed, in which connect the natural frequency of the roll (1) is also changed. The device that carries out the method comprises a pressure medium accumulator (39), which has been connected to the pressure side of a loading element (13, 23, 33) of at least one hydrostatic bearing element (10, 20, 30).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.