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US 4,499,748 AGranted
Rolling mill
AssigneeHitachi, Ltd.
InventorsMitsuo Nihei, Hidetoshi Nishi
Life of this patent
Estimating the term…
Abstract
A rolling mill comprising a roll housing in which are mounted a pair of work rolls which can be bent by work roll benders and a pair of support rolls therefor which are displaceable relative to each other in their axial direction and are bent by support roll benders. To minimize the size of the window of the rolling mill housing while including a plurality of mechanisms such as roll benders and means for roll displacement, said support roll benders are disposed closer to the center plane of the rolling mill than the work roll benders.
Claims15
A rolling mill, comprising:
- a roll housing;
- a pair of work rolls having parallel axes and being mounted within said roll housing;
- work roll chocks mounted within said roll housing and supporting respective opposite ends of said work rolls;
- a pair of intermediate rolls mounted on parallel axes within said roll housing for engaging and supporting said work rolls;
- intermediate roll chocks mounted within said roll housing and supporting respective opposite ends of said intermediate rolls;
- a pair of backup rolls mounted within said roll housing for contacting and supporting said intermediate rolls;
- intermediate roll benders for bending said intermediate rolls;
- work roll benders in said roll housing and engaging said work roll chocks for bending said work rolls;
- said intermediate roll chocks and said work roll chocks having laterally, with respect to said roll axes, outermost faces;
- said intermediate roll chock outermost faces and roll benders being closer to the centre plane of the rolling mill than said work roll chock outermost faces and work roll benders;
- drive means having two drive shafts respectively axially connected to and to rotate each intermediate roll, and said drive means being located on only one axial side of said roll housing;
- means for causing relative axial displacement of the intermediate rolls relative to each other and said roll housing, comprising movable blocks separately mounted within said roll housing on opposite sides of each intermediate roll to be displaceable in the axial direction of the intermediate rolls inside the roll housing, and said movable blocks supporting said intermediate roll chocks while permitting them to move vertically;
- disconnectable means connecting the movable blocks and the intermediate roll chocks to move together in the axial direction during said axial displacement and to disconnect for permitting roll change on the opposite axial side of said roll housing;
- said means for moving the movable blocks being on said one axial side of said roll housing with said drive means and further comprising, for each intermediate roll, a pair of cylinders operatively connected to said movable blocks for reciprocating them in the axial direction and said pair of cylinders being located on opposite sides of the associated one of said drive shafts;
- and
- said intermediate roll benders being provided operatively between said movable blocks and said intermediate roll chocks.
13 more elements
Dependencies are inferred from the claim text.