Device for simultaneously driving the screws of two parallel screw-and-nut systems
AssigneeSociete Redex
InventorMichel Pescher
Life of this patent
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Abstract
The invention relates to a device for clamping the rolls (5 and 6) of a rolling mill. It comprises two screw-and-nut systems (1 and 2) controlled by two epicyclic planetary gear trains (7 and 8) coupled to each other and to a first motor (18) for controlling the screws in opposite directions via a respective one of their two sun shafts (9 and 10), and coupled to each other and the gear wheel of a motor (13) for screwing or unscrewing the two screws in the same direction via their planet carriers (7e, 8e).
Claims7
A device for simultaneously driving the two screws of two parallel fixed-nut, screw-and-nut systems in equal amplitude translation in the same direction or in opposite directions, the device comprising two planetary gear trains each having two sun wheels and each having an outlet coupled to respective one of the two screws, wherein each screw is coupled to rotate with one of the sun wheels of the corresponding planetary gear train, with the planet carrier of each of them being coupled to the outlet shaft of a first motor in such a manner as to provide equal amplitude and same-direction rotation, and with the other sun wheels of the planetary gear trains being coupled to each other to rotate through the same amplitude in opposite directions under the effect of a second motor for driving one of them.
Dependencies are inferred from the claim text.