| 摘要 |
<p>Disclosed is a pressure ratio monitoring device for equipment having at least one floating roll and a pneumatic or hydraulic loading device engaging either the floating roll or a back-up roll. The controlling element which is either the loading device or the floating roll, has a control pressure derived from a pressure therein whereby the pressure in the other of the loading device or the floating roll (i.e. a controlled element) can be adjusted by means of the pressure ratio monitoring device to maintain a predetermined ratio to the pressure in the controlling element. The pressure ratio monitoring device compares the control pressure with the actual pressure in the controlled element and, when the pressure to be controlled is excessive in relation to the said predetermined pressure ratio, reduces the pressure to the predetermined ratio.</p> |
