| 摘要 |
A self-loading controlled deflection roll has movable shoes disposed inside the roll shell, at the opposite ends and at the center of a central shaft, for displacing the external surface of the roll shell toward and away from a mating roll forming a nip with the controlled deflection roll. In order to ensure that both ends of the controlled deflection roll shell move evenly in a radial direction into nipping engagement with the mating roll, and to also ensure that the ends retract evenly away from nip engagement, a control system and method are provided for automatically adjusting the flow of hydraulic fluid, such as oil, which is used to displace the shoes at the opposite end of the central shaft. The control system and method make use of a mechanical linkage which is operated by movement responsive displacement of the shoes, the linkage positioning relatively movable parts of a control valve so as to increase or decrease the flow of hydraulic fluid to the respective end shoes, thereby ensuring that the end shoes move uniformly relative to each other.
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